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Document and Entity Information - shares	6 Months Ended
Document and Entity Information - shares	Jun. 30, 2018	Aug. 03, 2018
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Jun. 30, 2018
Document Fiscal Year Focus	2018
Document Fiscal Period Focus	Q2
Trading Symbol	VHI
Entity Registrant Name	VALHI INC /DE/
Entity Central Index Key	0000059255
Current Fiscal Year End Date	--12-31
Entity Filer Category	Non-accelerated Filer
Entity Common Stock, Shares Outstanding		339,185,449

CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Millions	Jun. 30, 2018	Dec. 31, 2017
Current assets:
Cash and cash equivalents	$ 554.5	$ 435.7
Restricted cash equivalents	14.4	16.1
Marketable securities	1.6	3.0
Accounts and other receivables, net	411.6	365.8
Land held for development	15.1	16.5
Inventories, net	429.4	398.4
Other current assets	16.6	15.5
Current assets of discontinued operations		11.2
Total current assets	1,443.2	1,262.2
Other assets:
Marketable securities	256.8	255.7
Investment in TiO2 manufacturing joint venture	80.3	86.5
Goodwill	379.7	379.7
Deferred income taxes	98.6	119.8
Other assets	175.5	174.1
Noncurrent assets of discontinued operations		40.8
Total other assets	990.9	1,056.6
Property and equipment:
Land	46.6	47.0
Buildings	253.7	261.6
Equipment	1,155.7	1,150.8
Mining properties	31.8	35.0
Construction in progress	37.9	58.3
Gross property and equipment	1,525.7	1,552.7
Less accumulated depreciation	958.9	964.0
Net property and equipment	566.8	588.7
Total assets	3,000.9	2,907.5
Current liabilities:
Current maturities of long-term debt	1.6	1.6
Accounts payable and accrual liabilities	337.1	257.1
Income taxes	44.9	25.1
Current liabilities of discontinued operations		47.3
Total current liabilities	383.6	331.1
Noncurrent liabilities:
Long-term debt	1,061.7	1,041.5
Deferred income taxes	157.6	183.2
Payable to affiliates	64.0	70.1
Accrued pension costs	257.5	266.4
Accrued environmental remediation and related costs	101.3	110.7
Accrued postretirement benefits costs	10.7	11.3
Other liabilities	94.1	73.6
Noncurrent liabilities of discontinued operations		52.9
Total noncurrent liabilities	1,746.9	1,809.7
Equity: Valhi stockholders' equity:
Preferred stock	667.3	667.3
Common stock	3.6	3.6
Retained earnings (deficit)	72.6	(17.9)
Accumulated other comprehensive loss	(185.2)	(179.0)
Treasury stock, at cost	(49.6)	(49.6)
Total Valhi stockholders’ equity	508.7	424.4
Noncontrolling interest in subsidiaries	361.7	342.3
Total equity	870.4	766.7
Total liabilities and equity	3,000.9	2,907.5
Commitments and contingencies (Notes 14 and 17)

CONDENSED CONSOLIDATED STATEMENTS OF INCOME - USD ($) shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Revenues and other income:
Net sales	$ 510.2	$ 481.8	$ 976.2	$ 887.1
Other income, net	19.3	3.8	39.7	11.4
Total revenues and other income	529.5	485.6	1,015.9	898.5
Costs and expenses:
Cost of sales	326.2	338.0	606.9	626.7
Selling, general and administrative	79.5	66.1	159.7	129.6
Litigation settlement expense, net	62.0		62.0
Other components of net periodic pension and OPEB expense	3.8	4.3	7.5	8.4
Interest	16.0	14.7	31.4	29.2
Total costs and expenses	487.5	423.1	867.5	793.9
Income from continuing operations before income taxes	42.0	62.5	148.4	104.6
Income tax expense (benefit)	22.0	(100.8)	58.2	(82.2)
Net income from continuing operations	20.0	163.3	90.2	186.8
Income (loss) from discontinued operations	0.4	(108.2)	38.0	(109.9)
Net income	20.4	55.1	128.2	76.9
Noncontrolling interest in net income of subsidiaries	8.7	46.3	27.2	55.4
Net income attributable to Valhi stockholders	11.7	8.8	101.0	21.5
Amount attributable to Valhi stockholders:
Income from continuing operations	11.3	117.0	63.0	131.4
Income (loss) from discontinued operations	0.4	(108.2)	38.0	(109.9)
Net income attributable to Valhi stockholders	$ 11.7	$ 8.8	$ 101.0	$ 21.5
Basic and diluted net income per share:
Income from continuing operations	$ 0.03	$ 0.35	$ 0.18	$ 0.38
Income (loss) from discontinued operations		(0.32)	0.11	(0.32)
Net income attributable to Valhi stockholders	0.03	0.03	0.29	0.06
Cash dividends per share	$ 0.02	$ 0.02	$ 0.04	$ 0.04
Basic and diluted weighted average shares outstanding	342.0	342.0	342.0	342.0

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Net income	$ 20.4	$ 55.1	$ 128.2	$ 76.9
Other comprehensive income (loss), net of tax:
Currency translation	(22.9)	12.6	(13.1)	20.1
Marketable securities		(0.5)	(0.1)	(0.8)
Interest rate swap		(0.4)		0.1
Total other comprehensive income (loss), net	(20.6)	12.3	(8.6)	22.6
Comprehensive income (loss)	(0.2)	67.4	119.6	99.5
Comprehensive income attributable to noncontrolling interest	3.2	49.2	24.9	61.0
Comprehensive income (loss) attributable to Valhi stockholders	(3.4)	18.2	94.7	38.5
Defined Benefit Pension Plans
Other comprehensive income (loss), net of tax:
Pension and other postretirement benefit plan	2.5	0.8	5.1	3.6
OPEB
Other comprehensive income (loss), net of tax:
Pension and other postretirement benefit plan	$ (0.2)	$ (0.2)	$ (0.5)	$ (0.4)

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Cash flows from operating activities:
Net income	$ 128.2	$ 76.9
Depreciation and amortization	28.9	33.2
Benefit plan expense greater than cash funding	3.4	4.6
Deferred income taxes	37.2	(183.9)
Gain on sale of WCS	(58.4)
Gain on land sales	(12.5)
Distributions from Ti02 manufacturing joint venture, net	4.8	8.4
Long-lived asset impairment		170.6
Other, net	6.6	1.5
Change in assets and liabilities:
Accounts and other receivables, net	(64.5)	(77.8)
Inventories, net	(41.7)	22.6
Land held for development, net	(1.2)	3.1
Accounts payable and accrued liabilities	62.7	8.8
Accounts with affiliates	25.4	0.3
Income taxes	20.1	5.8
Other, net	20.7	14.6
Net cash provided by operating activities	159.7	88.7
Cash flows from investing activities:
Capital expenditures	(27.6)	(30.5)
Cash, cash equivalents and restricted cash and cash equivalents of discontinued operations at time of sale	(28.9)
Capitalized permit costs		(2.2)
Proceeds from sale of land	19.5
Purchases of marketable securities	(3.7)	(5.6)
Disposals of marketable securities	3.9	5.5
Other, net	0.1
Net cash used in investing activities	(36.7)	(32.8)
Indebtedness:
Borrowings		175.7
Principal payments	(3.7)	(148.9)
Deferred financing costs paid		(0.2)
Valhi cash dividends paid	(13.6)	(13.6)
Distributions to noncontrolling interest in subsidiaries	(7.9)	(7.0)
Net cash provided by (used in) financing activities	(25.2)	6.0
Cash, cash equivalents and restricted cash and cash equivalents - net change from:
Operating, investing and financing activities	97.8	61.9
Effect of exchange rates on cash	(9.3)	8.6
Balance at beginning of period	489.4	196.5
Balance at end of period	577.9	267.0
Cash paid for:
Interest, net of capitalized interest	31.0	30.0
Income taxes, net	5.9	26.3
Noncash investing activities:
Change in accruals for capital expenditures	1.0	4.0
Noncash financing activities:
Trade payable to affiliate converted to indebtedness	$ 36.3
Indebtedness borrowings paid directly to lender to settle refinanced indebtedness		9.3
Indebtedness principal payments paid directly by lender		(8.4)
Indebtedness borrowings paid directly to lender for debt issuance costs		$ (0.9)

CONDENSED CONSOLIDATED STATEMENT OF EQUITY - 6 months ended Jun. 30, 2018 - USD ($) $ in Millions	Total	Preferred stock	Common stock	Additional paid-in capital	Retained earnings (deficit)	Accumulated other comprehensive loss	Treasury stock	Non-controlling interest
Balance at Dec. 31, 2017	$ 766.7	$ 667.3	$ 3.6		$ (17.9)	$ (179.0)	$ (49.6)	$ 342.3
Change in accounting principle – ASU 2014-09 at Dec. 31, 2017	5.0				2.7			2.3
Balance at January 1, 2018, as adjusted at Dec. 31, 2017	771.7	667.3	3.6		(15.2)	(179.0)	(49.6)	344.6
Net income	128.2				101.0			27.2
Other comprehensive loss, net	(8.6)					(6.2)		(2.4)
Cash dividends	(21.5)			$ (0.4)	(13.2)			(7.9)
Other, net	0.6			$ 0.4				0.2
Balance at Jun. 30, 2018	$ 870.4	$ 667.3	$ 3.6		$ 72.6	$ (185.2)	$ (49.6)	$ 361.7

- Definition

The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest.

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+ Details

Organization and Basis of Presentation	6 Months Ended
Organization and Basis of Presentation	Jun. 30, 2018
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Organization and Basis of Presentation	Note 1—Organization and basis of presentation: Organization— We are majority owned by a wholly-owned subsidiary of Contran Corporation (“Contran”), which owns approximately 92% of our outstanding common stock at June 30, 2018. All of Contran's outstanding voting stock is held by a family trust established for the benefit of Lisa K. Simmons and Serena Simmons Connelly and their children, for which Ms. Simmons and Ms. Connelly are co-trustees, or is held directly by Ms. Simmons and Ms. Connelly or entities related to them. Consequently, Ms. Simmons and Ms. Connelly may be deemed to control Contran and us. Basis of Presentation—Consolidated in this Quarterly Report are the results of our majority-owned and wholly-owned subsidiaries, including NL Industries, Inc., Kronos Worldwide, Inc., CompX International Inc., Tremont LLC, Basic Management, Inc. (“BMI”) and The LandWell Company (“LandWell”). Kronos (NYSE: KRO), NL (NYSE: NL), and CompX (NYSE American: CIX) each file periodic reports with the Securities and Exchange Commission (“SEC”). In January 2018, we sold Waste Control Specialists LLC (“WCS”). See Note 3. The unaudited Condensed Consolidated Financial Statements contained in this Quarterly Report have been prepared on the same basis as the audited Consolidated Financial Statements included in our Annual Report on Form 10-K for the year ended December 31, 2017 that we filed with the SEC on March 15, 2018 (the “2017 Annual Report”). In our opinion, we have made all necessary adjustments (which include only normal recurring adjustments, other than the gain on the sale of WCS recognized in the first quarter of 2018 as discussed in Note 3), in order to state fairly, in all material respects, our consolidated financial position, results of operations and cash flows as of the dates and for the periods presented. We have condensed the Consolidated Balance Sheet at December 31, 2017 contained in this Quarterly Report as compared to our audited Consolidated Financial Statements at that date, and we have omitted certain information and footnote disclosures (including those related to the Consolidated Balance Sheet at December 31, 2017) normally included in financial statements prepared in accordance with accounting principles generally accepted in the United States of America (“GAAP”). Our results of operations for the interim periods ended June 30, 2018 may not be indicative of our operating results for the full year. The Condensed Consolidated Financial Statements contained in this Quarterly Report should be read in conjunction with our 2017 Consolidated Financial Statements contained in our 2017 Annual Report. Unless otherwise indicated, references in this report to “we,” “us” or “our” refer to Valhi, Inc. and its subsidiaries (NYSE: VHI), taken as a whole.

Business Segment Information

6 Months Ended

Jun. 30, 2018

Segment Reporting [Abstract]

Business Segment Information

Note 2—Business segment information:

Business segment	Entity	% controlled at June 30, 2018
Chemicals	Kronos	80	%
Component products	CompX	87	%
Real estate management and development	BMI and LandWell	63% - 77	%

Our control of Kronos includes 50% we hold directly and 30% held directly by NL. We own 83% of NL. Our control of CompX is through NL. We own 63% of BMI. Our control of LandWell includes the 27% we hold directly and 50% held by BMI.

	Three months ended June 30,						Six months ended June 30,
	2017			2018			2017			2018
	(unaudited)
	(In millions)
Net sales:
Chemicals	$	441.4		$	471.8		$	811.2		$	902.2
Component products		30.1			32.4			60.0			60.8
Real estate management and development		10.3			6.0			15.9			13.2
Total net sales	$	481.8		$	510.2		$	887.1		$	976.2
Cost of sales:
Chemicals	$	309.6		$	300.5		$	573.8		$	556.6
Component products		20.5			21.2			40.8			40.1
Real estate management and development		7.9			4.5			12.1			10.2
Total cost of sales	$	338.0		$	326.2		$	626.7		$	606.9
Gross margin:
Chemicals	$	131.8		$	171.3		$	237.4		$	345.6
Component products		9.6			11.2			19.2			20.7
Real estate management and development		2.4			1.5			3.8			3.0
Total gross margin	$	143.8		$	184.0		$	260.4		$	369.3
Operating income:
Chemicals	$	77.2		$	123.6		$	136.3		$	234.2
Component products		4.6			6.0			9.1			10.4
Real estate management and development		1.3			.4			1.8			4.2
Total operating income		83.1			130.0			147.2			248.8
General corporate items:
Securities earnings		7.1			8.5			14.1			16.8
Insurance recoveries		—			.2			.1			.4
Gain on land sales		—			—			—			12.5
Other components of net periodic pension and OPEB expense		(4.3	)		(3.8	)		(8.4	)		(7.5	)
Litigation settlement expense		—			(62.0	)		—			(62.0	)
General expenses, net		(8.7	)		(14.9	)		(19.2	)		(29.2	)
Interest expense		(14.7	)		(16.0	)		(29.2	)		(31.4	)
Income from continuing operations before income taxes	$	62.5		$	42.0		$	104.6		$	148.4

Segment results we report may differ from amounts separately reported by our various subsidiaries due to purchase accounting adjustments and related amortization or differences in the way we define operating income. Intersegment sales are not material.

Business Disposition

6 Months Ended

Jun. 30, 2018

Business Combinations [Abstract]

Business Disposition

Note 3—Business disposition — Waste Control Specialists LLC:

Pursuant to an agreement we entered into in December 2017, on January 26, 2018 we completed the sale of our Waste Management Segment to JFL-WCS Partners, LLC ("JFL Partners"), an entity sponsored by certain investment affiliates of J.F. Lehman & Company, for consideration consisting of the assumption of all of WCS' third-party indebtedness and other liabilities. Our Waste Management Segment, which operated in the low-level radioactive, hazardous, toxic and other waste disposal industry historically struggled to generate sufficient recurring disposal volumes to generate positive operating results or cash flows. We believe the sale will enable us to focus more effort on continuing to develop our remaining segments which we believe have greater opportunity for higher returns than our Waste Management segment.

In accordance with GAAP, the Waste Management Segment has been classified as discontinued operations in our Condensed Consolidated Balance Sheets and Condensed Consolidated Statements of Income for all periods presented. Also in accordance with GAAP, we have not reclassified our Condensed Consolidated Statement of Cash Flows to reflect the Waste Management Segment as discontinued operations. We recognized a pre-tax gain of approximately $58 million primarily in the first quarter of 2018 on the transaction ($38.6 million, or $.11 per diluted share, net of tax) because the carrying value of the liabilities of the business assumed by the purchaser exceeded the carrying value of the assets sold at the time of the sale in large part due to the previously-reported long-lived asset impairment of $170.6 million recognized in the second quarter of 2017, as discussed in the 2017 Annual Report. The net assets of the disposed Waste Management Segment at the time we completed the sale on January 26, 2018 were not materially different as compared to December 31, 2017. The income tax benefit associated with discontinued operations recognized in the second quarter of 2018 relates principally to a change in the amount of the deferred income tax asset valuation allowance recognized during 2018 allocated to discontinued operations under the intra-period guidance of ASC 740 associated with the business interest expense deduction limitation discussed in Note 13. Selected financial data for the operations of the disposed Waste Management Segment for periods prior to completing the sale is presented below. Current assets at December 31, 2017 consist principally of trade accounts receivable.

	December 31, 2017
	(In millions)
ASSETS
Current assets	$	11.2
Restricted cash		27.2
Property and equipment, net		6.0
Other noncurrent assets		7.6
Total noncurrent assets		40.8
Total assets	$	52.0

LIABILITIES
Current portion of long-term debt	$	3.0
Payable to Contran		36.1
Other current liabilities		8.2
Total current liabilities		47.3

Long-term debt		65.0
Deferred income taxes		(43.8	)
Accrued noncurrent closure and post closure costs		31.7
Total noncurrent liabilities		52.9
Total liabilities	$	100.2

	Three months ended June 30,						Six months ended June 30,
	2017			2018			2017			2018⁽¹⁾
	(In millions)
Net sales	$	20.5		$	—		$	42.0		$	4.6

Operating loss⁽²⁾	$	(171.6	)	$	—			(171.0	)		(.4	)
Termination fee		4.0			—			4.0			—
Other expense, net		(5.8	)		—			(7.7	)		—
Interest expense, net		(1.2	)		—			(2.4	)		(.3	)
Loss before taxes		(174.6	)		—			(177.1	)		(.7	)
Income tax benefit		(66.4	)		—			(67.2	)		(.1	)
Net loss		(108.2	)		—			(109.9	)		(.6	)

Pre-tax gain on disposal		—			—			—			58.4
Income tax expense (benefit)		—			(.4	)		—			19.8
After-tax gain on disposal		—			.4			—			38.6

Total	$	(108.2	)	$	.4		$	(109.9	)	$	38.0

Net cash provided by operating activities							$	8.8		$	2.3

Net cash used in investing activities							$	(2.6	)	$	(.1	)

(1)

Includes results of the Waste Management Segment though January 26, 2018, the date of the sale.

(2)

Operating results in the second quarter and first six months of 2017 includes a $170.6 million long-lived asset impairment.

In connection with the January 2018 sale, JFL Partners did not assume WCS’ trade payable owed to Contran, which consisted primarily of intercorporate service fees charged to WCS by Contran which WCS did not pay to Contran for several years. Immediately prior to the closing of the sale of WCS, Contran transferred its associated receivable of $36.3 million from WCS to Valhi, in return for a deemed $36.3 million borrowing by Valhi under its revolving credit facility with Contran, see Note 8. Valhi subsequently contributed such receivable from WCS to WCS’s equity, and the trade payable obligation of WCS was deemed paid in full.

Accounts and Other Receivables, Net

6 Months Ended

Jun. 30, 2018

Receivables [Abstract]

Accounts and Other Receivables, Net

Note 4—Accounts and other receivables, net:

	December 31, 2017			June 30, 2018
	(In millions)
Trade accounts receivable:
Kronos	$	301.4		$	350.8
CompX		10.5			13.8
BMI and LandWell		1.6			1.9
VAT and other receivables		20.7			26.6
Insurance recovery receivable – NL		—			15.0
Refundable income taxes		.5			.7
Receivable from affiliates:
Contran – trade items		1.0			.9
Contran – income taxes		19.4			—
LPC – trade items		8.9			—
Other – trade items		3.3			3.3
Allowance for doubtful accounts		(1.5	)		(1.4	)
Total	$	365.8		$	411.6

The insurance recovery receivable due to NL is discussed in Note 17.

- Definition

The entire disclosure for claims held for amounts due a entity, excluding financing receivables. Examples include, but are not limited to, trade accounts receivables, notes receivables, loans receivables. Includes disclosure for allowance for credit losses.

+ References + Details

Inventories, Net

6 Months Ended

Jun. 30, 2018

Inventory Disclosure [Abstract]

Inventories, Net

Note 5—Inventories, net:

	December 31, 2017		June 30, 2018
	(In millions)
Raw materials:
Chemicals	$	106.9	$	89.3
Component products		2.7		2.7
Total raw materials		109.6		92.0
Work in process:
Chemicals		20.8		33.1
Component products		9.8		10.6
Total in-process products		30.6		43.7
Finished products:
Chemicals		192.2		226.4
Component products		2.8		3.3
Total finished products		195.0		229.7
Supplies (chemicals)		63.2		64.0
Total	$	398.4	$	429.4

Marketable Securities

6 Months Ended

Jun. 30, 2018

Investments Debt And Equity Securities [Abstract]

Marketable Securities

Note 6—Marketable securities:

Our marketable securities consist of marketable equity and debt securities. Prior to 2018, any unrealized gains or losses on equity securities were recognized through other comprehensive income, net of deferred income taxes. Beginning on January 1, 2018 with the adoption of Accounting Standards Update (“ASU”) 2016-01, our marketable equity securities will continue to be carried at fair value as noted above, but any unrealized gains or losses on the securities are now recognized as a component of other income included in the securities transactions, net on our Condensed Consolidated Statements of Income. See Note 19.

	Market value		Cost basis		Unrealized losses, net
	(In millions)
December 31, 2017:
Current assets	$	3.0		3.0		—
Noncurrent assets:
The Amalgamated Sugar Company LLC	$	250.0		250.0		—
Other		5.7		5.9		(.2	)
Total	$	255.7		255.9		(.2	)
June 30, 2018:
Current assets	$	1.6		1.6		—
Noncurrent assets:
The Amalgamated Sugar Company LLC	$	250.0	$	250.0	$	—
Other		6.8		7.1		(.3	)
Total	$	256.8	$	257.1	$	(.3	)

All of our marketable securities are accounted for as available-for-sale, which are carried at fair value using quoted market prices, primarily Level 1 inputs as defined by ASC Topic 820, Fair Value Measurements and Disclosures, except for our investment in The Amalgamated Sugar Company LLC (“Amalgamated”). Our investment in Amalgamated is measured using significant unobservable inputs, which are Level 3 inputs. Please refer to Note 6 in our 2017 Annual Report for a complete description of the valuation methodology for our investment in Amalgamated. There have been no changes to the carrying value of this investment during the periods presented. See Note 18. Our other marketable securities, which consist of marketable equity and debt securities, are not material.

On May 30, 2018, we entered into an agreement with Snake River Sugar Company, an Oregon agricultural cooperative corporation that controls Amalgamated ("Snake River"), in which we agreed to sell our interest in Amalgamated for consideration consisting of $12.5 million in cash and the deemed payment in full of our $250 million in loans we owe Snake River (see Note 8). Closing of the sale is scheduled for August 31, 2018, or such other date as shall be agreed to by us and Snake River. Snake River's obligation to complete the closing of the sale is contingent on Snake River obtaining all required consents of the secured lenders of Snake River and Amalgamated and Snake River has agreed to work diligently and use commercially reasonable efforts to obtain such consents. Such consents have not yet been received, and accordingly there is no assurance that such sale will be completed and as such we have continued to classify our investment in Amalgamated as a noncurrent asset (and our $250 million in loans we owe Snake River as a noncurrent liability) at June 30, 2018.

Other Noncurrent Assets

6 Months Ended

Jun. 30, 2018

Deferred Costs Capitalized Prepaid And Other Assets Disclosure [Abstract]

Other Noncurrent Assets

Note 7—Other noncurrent assets:

	December 31, 2017		June 30, 2018
	(In millions)
Other noncurrent assets:
Land held for development	$	126.6	$	123.1
Restricted cash		9.9		9.0
Land contract receivables		—		7.3
IBNR receivables		6.8		6.9
Pension asset		4.2		6.0
Notes receivable - OPA		—		2.6
Other		26.6		20.6
Total	$	174.1	$	175.5

Land contract receivables classified as a noncurrent asset relate to our Real Estate Management and Development Segment. Such receivables relate to certain fees we collect from builders when the builder sells a home to a customer, as discussed in Note 19.

As disclosed in Note 18 to our 2017 Annual Report under an Owner Participation Agreement (“OPA”) entered into by LandWell with the Redevelopment Agency of the City of Henderson, Nevada, if LandWell develops certain real property for commercial and residential purposes in a master planned community in Henderson, Nevada, the cost of certain public infrastructure may be reimbursed to us through tax increment. The maximum reimbursement under the OPA is $209 million, and is subject to, among other things, completing construction of approved qualifying public infrastructure, transferring title of such infrastructure to the City of Henderson, receiving approval from the Redevelopment Agency of the funds expended to be eligible for tax increment reimbursement and the existence of a sufficient property tax valuation base and property tax rates in order to generate tax increment reimbursement funds. We are entitled to receive 75% of the tax increment generated by the master planned community through 2036, subject to the qualifications and limitations indicated above. Public infrastructure costs previously incurred for which the Redevelopment Agency had provided its approval for tax increment reimbursement but we had not yet received such reimbursement through tax increment receipts aggregated $3.1 million at December 31, 2017. Such amount is evidenced by a promissory note issued to LandWell by the City of Henderson.

Prior to 2018, due to the significant uncertainty of the timing and amount of any of such potential tax increment reimbursements, we recognized any such tax increment reimbursements only when received. However, due to growth in the master planned community and the increase in tax increment funds to which we are entitled, we determined in the first quarter of 2018 we expected the tax increment reimbursements to be collected in the future would at least be sufficient to support recognizing the $3.1 million note payable issued by the City of Henderson to us. The note payable bears interest at 6% annually and the note expires in 2036. Any unpaid balances in 2036 are forfeited. See Note 13.

Long-Term Debt

6 Months Ended

Jun. 30, 2018

Debt Disclosure [Abstract]

Long-Term Debt

Note 8—Long-term debt:

	December 31, 2017		June 30, 2018
	(In millions)
Valhi:
Snake River Sugar Company	$	250.0	$	250.0
Contran credit facility		284.3		320.6
Total Valhi debt		534.3		570.6
Subsidiary debt:
Kronos:
Senior Secured Notes		471.1		458.6
Tremont:
Promissory note payable		13.1		10.9
BMI:
Bank loan – Western Alliance Bank		18.8		18.0
LandWell:
Note payable to the City of Henderson		2.5		2.3
Other		3.3		2.9
Total subsidiary debt		508.8		492.7
Total debt		1,043.1		1,063.3
Less current maturities		1.6		1.6
Total long-term debt	$	1,041.5	$	1,061.7

Valhi – Snake River Sugar Company – In connection with the proposed sale of our ownership interest in Amalgamated, our outstanding debt obligations to Snake River Sugar Company due in 2027 would be deemed to be paid in full upon completion of such sale. See Note 6. As discussed above, completion of such sale is contingent on Snake River obtaining all required consents of the secured lenders of Snake River and Amalgamated to the closing of the sale and such consents have not yet been received, and accordingly there is no assurance that such sale will be completed. We have continued to classify our $250 million in loans we owe Snake River as a noncurrent liability at June 30, 2018.

Contran credit facility – In connection with the sale of WCS discussed in Note 3, immediately prior to the closing of the sale, Contran transferred its associated receivable of $36.3 million from WCS to Valhi, in return for a deemed $36.3 million borrowing by Valhi under its revolving credit facility with Contran. The average interest rate on the existing balance as of and for the six months ended June 30, 2018 was 6.0% and 5.62%, respectively. At June 30, 2018, the equivalent of $39.4 million was available for borrowing under this facility.

Kronos – Senior Secured Notes - At June 30, 2018, the carrying value of Kronos’ 3.75% Senior Secured Notes due September 15, 2025 (€400 million aggregate principal amount outstanding) is stated net of unamortized debt issuance costs of $6.8 million.

North American and European revolving credit facilities– During the first six months of 2018, Kronos had no borrowings or repayments under its North American revolving credit facility and its European revolving credit facility. At June 30, 2018, approximately $118.1 million was available for additional borrowing under the North American Revolving credit facility. Kronos’ European revolving credit facility requires the maintenance of certain financial ratios, and one of such requirements is based on the ratio of net debt to last twelve months earnings before income tax, interest, depreciation and amortization expense (EBITDA) of the borrowers. Based upon the borrowers’ last twelve months EBITDA as of June 30, 2018 and the net debt to EBITDA financial test, the full €90.0 million of the credit facility ($104.7 million) is available for borrowing availability at such date.

Tremont – Promissory note payable – In January 2018, and following Tremont’s sale of certain land held for investment, discussed in Note 13, Tremont prepaid (without penalty) $2.2 million principal amount on the note as required under the terms of the note agreement.

Restrictions and other – Certain of the credit facilities with unrelated, third-party lenders described above require the respective borrowers to maintain minimum levels of equity, require the maintenance of certain financial ratios, limit dividends and additional indebtedness and contain other provisions and restrictive covenants customary in lending transactions of this type. We are in compliance with all of our debt covenants at June 30, 2018.

Accounts Payable and Accrued Liabilities

6 Months Ended

Jun. 30, 2018

Payables And Accruals [Abstract]

Accounts Payable and Accrued Liabilities

Note 9—Accounts payable and accrued liabilities:

	December 31, 2017		June 30, 2018
	(In millions)
Accounts payable:
Kronos	$	107.9	$	120.6
CompX		2.3		3.0
BMI and LandWell		3.7		2.8
NL		1.8		.7
Other		.4		.4
Payable to affiliates:
Contran – taxes		—		2.7
LPC – trade items		16.2		12.5
Litigation settlement		—		60.0
Employee benefits		36.3		28.0
Deferred income		28.3		22.8
Accrued sales discounts and rebates		14.3		19.2
Environmental remediation and related costs		6.8		19.6
Interest		5.5		5.4
Other		33.6		39.4
Total	$	257.1	$	337.1

The litigation settlement accrual is discussed in Note 17.

Other noncurrent liabilities

6 Months Ended

Jun. 30, 2018

Other Liabilities Disclosure [Abstract]

Other Noncurrent Liabilities

Note 10—Other noncurrent liabilities:

	December 31, 2017		June 30, 2018
	(In millions)
Reserve for uncertain tax positions	$	16.5	$	17.2
Litigation settlement		—		17.0
Deferred income		15.7		15.9
Employee benefits		8.4		8.2
Insurance claims and expenses		9.1		9.6
Deferred payment obligation		9.3		9.4
Accrued development costs		6.1		7.9
Other		8.5		8.9
Total	$	73.6	$	94.1

The litigation settlement accrual is discussed in Note 17.

Revenue Recognition

6 Months Ended

Jun. 30, 2018

Revenue From Contract With Customer [Abstract]

Revenue Recognition

Note 11 – Revenue Recognition

Chemicals and Component Products Segments - Our sales involve single performance obligations to ship our products pursuant to customer purchase orders. In some cases, the purchase order is supported by an underlying master sales agreement, but our purchase order acceptance generally evidences the contract with our customer by specifying the key terms of product and quantity ordered, price and delivery and payment terms. Effective January 1, 2018 with the adoption of ASU No. 2014-09, Revenue from Contracts with Customers (Topic 606), see Note 19, we record revenue when we satisfy our performance obligations to our customers by transferring control of our products to them, which generally occurs at point of shipment or upon delivery. Such transfer of control is also evidenced by transfer of legal title and other risks and rewards of ownership (giving the customer the ability to direct the use of, and obtain substantially all of the benefits of, the product), and our customers becoming obligated to pay us and such payment being probable of occurring. In certain arrangements we provide shipping and handling activities after the transfer of control to our customer (e.g. when control transfers prior to delivery). In such arrangements shipping and handling are considered fulfillment activities, and accordingly, such costs are accrued when the related revenue is recognized.

Revenue is recorded in an amount that reflects the net consideration we expect to receive in exchange for our products. Prices for our products are based on terms specified in published list prices and purchase orders, which generally do not include financing components, noncash consideration or consideration paid to our customers. As our standard payment terms are less than one year, we have elected the practical expedient under ASC 606 and we have not assessed whether a contract has a significant financing component. We state sales net of price, early payment and distributor discounts as well as volume rebates (collectively, variable consideration). Variable consideration, to the extent present, is recognized as the amount to which we are most-likely to be entitled, using all information (historical, current and forecasted) that is reasonably available to us, and only to the extent that a significant reversal in the amount of the cumulative revenue recognized is not probable of occurring in a future period. Differences, if any, between estimates of the amount of variable consideration to which we will be entitled and the actual amount of such variable consideration have not been material in the past. We report any tax assessed by a governmental authority that we collect from our customers that is both imposed on and concurrent with our revenue-producing activities (such as sales, use, value added and excise taxes) on a net basis (meaning we do not recognize these taxes either in our revenues or in our costs and expenses).

Frequently, we receive orders for products to be delivered over dates that may extend across reporting periods. We invoice for each delivery upon shipment and recognize revenue for each distinct shipment when all sales recognition criteria for that shipment have been satisfied. As scheduled delivery dates for these orders are within a one year period, under the optional exemption provided by ASC 606, we do not disclose sales allocated to future shipments of partially completed contracts.

Real Estate Management and Development Segment – Our sales involve providing utility services, among other things, to an industrial park located in Henderson, Nevada and we are responsible for the delivery of water to the city of Henderson and various other users through a water distribution system we own. These sales involve single performance obligations and we record revenue when we satisfy our performance obligations to our customers generally after the service is performed and our customers become obligated to pay us and such payment being probable of occurring. Revenue is recorded in an amount that reflects the net consideration we expect to receive in exchange for our services. Prices for our products are based on contracted rates and do not include financing components, noncash consideration or consideration paid to our customers. As our standard payment terms are less than one year, we have elected the practical expedient under ASC 606 and we have not assessed whether a contract has a significant financing component.

Our revenues also are related to efforts to develop certain real estate in Henderson, Nevada, including approximately 2,100 acres zoned for residential/planned community purposes and approximately 400 acres zoned for commercial and light industrial use. Contracts for land sales are negotiated on an individual basis, involve single performance obligations, and generally require us to complete property development and improvements after title passes to the buyer and we have received all or a substantial portion of the selling price. We recognize land sales revenue associated with the residential/planned community over time using cost based input methods. Land sales associated with the residential/planned community have variable consideration components which are based on a percentage of the builder’s ultimate selling price of residential housing unit to their customer (generally 3.5% of such sales price). The amount we recognize when a parcel is sold to a home builder is the amount to which we are most-likely to be entitled, using all information (historical, current and forecasted) that is reasonably available to us, and only to the extent that a significant reversal in the amount of the cumulative revenue recognized is not probable of occurring in a future period. By recognizing revenue over time using cost based input methods, revenues (including variable consideration) and profits are recognized in the same proportion of our progress towards completion of our contractual obligations, with our progress measured by costs incurred as a percentage of total costs estimated to be incurred relative to the parcels sold. Estimates of total costs expected to be incurred require significant management judgment, and the amount of revenue and profits that have been recognized to date are subject to revisions throughout the development period. The impact on the amount of revenue recognized resulting from any future change in the estimate of total costs estimated to be incurred would be accounted for prospectively in accordance with GAAP. We also receive variable consideration of 1% tied to the builders ultimate selling price to their customers which is intended to recover our expenses for marketing the entire residential/planned community. Because we control and direct the marketing campaign we recognize both the revenues and expenses on a gross basis. We record estimated deferred revenue on the amount to which we are most-likely to be entitled and deferred revenue is recognized into revenue as the housing units are sold.

Disaggregation of sales–The following table disaggregates the net sales of our Chemicals Segment by place of manufacture (point of origin) and the location of the customer (point of destination), which are the categories that depict how the nature, amount timing and uncertainty of revenue and cash flows are affected by economic factors (as required by ASC 606).

	Three months ended June 30,						Six months ended June 30,
	2017			2018			2017			2018
	(In millions)
Net sales – point of origin::
Germany	$	231.9		$	257.7		$	415.5		$	492.2
United States		208.6			208.9			414.3			405.7
Canada		79.9			82.2			157.8			153.8
Belgium		72.0			68.9			130.1			138.6
Norway		51.3			56.5			98.6			109.6
Eliminations		(202.3	)		(202.4	)		(405.1	)		(397.7	)
Total	$	441.4		$	471.8		$	811.2		$	902.2

Net sales – point of destination:
Europe	$	226.6		$	238.5		$	406.3		$	472.4
North America		138.1			143.6			262.1			270.6
Other		76.7			89.7			142.8			159.2
Total	$	441.4		$	471.8		$	811.2		$	902.2

The following table disaggregates the net sales of our Component Products and Real Estate Management and Development Segments by major product line.

	Three months ended June 30,				Six months ended June 30,
	2017		2018		2017		2018
	(In millions)
Component Products:
Net sales:
Security products	$	26.1	$	27.2	$	52.1	$	51.3
Marine components		4.0		5.2		7.9		9.5
Total	$	30.1	$	32.4		60.0		60.8
Real Estate Management and Development:
Net sales:
Land sales	$	8.4	$	3.8		12.1		9.6
Water delivery		1.4		1.9		2.7		2.8
Utility and other		.5		.3		1.1		.8
Total	$	10.3	$	6.0	$	15.9	$	13.2

Employee Benefit Plans

6 Months Ended

Jun. 30, 2018

Compensation And Retirement Disclosure [Abstract]

Employee Benefit Plans

Note 12—Employee benefit plans:

The components of our net periodic defined benefit pension cost are presented in the table below.

	Three months ended June 30,						Six months ended June 30,
	2017			2018			2017			2018
	(In millions)
Service cost	$	2.8		$	2.9		$	5.5		$	5.9
Interest cost		3.9			4.0			7.7			8.0
Expected return on plan assets		(3.2	)		(3.8	)		(6.4	)		(7.8	)
Amortization of unrecognized prior service cost		.1			—			.2			.1
Recognized actuarial losses		3.7			3.9			7.3			7.7
Total	$	7.3		$	7.0		$	14.3		$	13.9

The components of our net periodic other postretirement benefit cost are presented in the table below.

	Three months ended June 30,						Six months ended June 30,
	2017			2018			2017			2018
	(In millions)
Service cost	$	.1		$	.1		$	.1		$	.1
Interest cost		.1			—			.2			.1
Amortization of prior service credit		(.3	)		(.2	)		(.5	)		(.5	)
Recognized actuarial gains		—			(.1	)		(.1	)		(.1	)
Total	$	(.1	)	$	(.2	)	$	(.3	)	$	(.4	)

Upon the adoption of ASU 2017-07, Compensation— Retirement Benefits (Topic 715) Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost, our net periodic defined benefit pension cost and other postretirement benefit cost, other than the service cost component, is presented as a separate line item (“Other components of net periodic pension and OPEB expense”) in our Condensed Consolidated Statements of Income for all periods presented. See Note 19. We expect to contribute the equivalent of approximately $19.8 million and $1.0 million, respectively, to all of our defined benefit pension plans and other postretirement benefit plans during 2018.

Other Income, Net

6 Months Ended

Jun. 30, 2018

Other Income And Expenses [Abstract]

Other Income, Net

Note 13—Other income, net:

	Six months ended June 30,
	2017			2018
	(In millions)
Securities earnings:
Dividends and interest	$	14.1		$	16.8
Currency transactions, net		(3.7	)		4.8
Insurance recoveries		.1			.4
Infrastructure reimbursement		.2			4.0
Gain on land sales		—			12.5
Other, net		.7			1.2
Total	$	11.4		$	39.7

Insurance recoveries reflect, in part, amounts NL received from certain of its former insurance carriers and relate to the recovery of prior lead pigment and asbestos litigation defense costs incurred by NL. See Note 17.

Infrastructure reimbursement costs relate principally to tax increment reimbursements of our Real Estate Management and Development Segment discussed in Note 7.

In the first quarter of 2018 we sold two parcels of land not used in our operating activities. We sold the first parcel for net proceeds of $18.9 million, and recognized a pre-tax gain on the sale of $11.9 million. We were required under our debt agreement with NERT to use a portion of the net proceeds received for the property to pay down our note balance and accordingly we made $2.2 million in principal payments on our debt, see Note 8. In addition NL sold excess property with a nominal book value for proceeds of $.6 million.

Income Taxes

6 Months Ended

Jun. 30, 2018

Income Tax Disclosure [Abstract]

Income Taxes

Note 14—Income taxes:

	Three months ended June 30,						Six months ended June 30,
	2017			2018			2017			2018
	(In millions)
Expected tax expense, at U.S. federal statutory income tax rate of 35% in 2017 and 21% in 2018	$	21.9		$	8.8		$	36.6		$	31.2
Incremental net tax on earnings and losses of non-U.S., U.S. and non-tax group companies		37.1			4.9			48.3			9.0
Non-U.S. tax rates		(2.3	)		7.9			(4.7	)		14.9
Valuation allowance		(157.6	)		1.7			(162.6	)		2.0
Adjustment to the reserve for uncertain tax positions, net		.6			.3			1.1			1.9
Canada – Germany APA		—			—			—			(1.4	)
Nondeductible expenses		.3			.3			.7			.7
Domestic production activities deduction		(1.5	)		—			(2.1	)		—
U.S. state income taxes and other, net		.7			(1.9	)		.6			(.1	)
Income tax expense (benefit)	$	(100.8	)	$	22.0		$	(82.2	)	$	58.2

Comprehensive provision for income taxes (benefit) allocable to:
Income from continuing operations	$	(100.8	)	$	22.0		$	(82.2	)	$	58.2
Discontinued operations		(66.4	)		(.4	)		(67.2	)		19.8
Retained earnings – change in accounting principle		—			—			—			1.1
Other comprehensive income (loss):
Currency translation		16.3			(3.3	)		18.1			(1.9	)
Pension plans		2.2			1.5			3.1			3.0
OPEB plans		(.1	)		(.1	)		(.2	)		(.2	)
Marketable securities		(.4	)		—			(.5	)		—
Interest rate swap		(.3	)		—			.1			—
Total	$	(149.5	)	$	19.7		$	(128.8	)	$	80.0

The amount shown in the above table of our income tax rate reconciliation for non-U.S. tax rates represents the result determined by multiplying the pre-tax earnings or losses of each of our non-U.S. subsidiaries by the difference between the applicable statutory income tax rate for each non-U.S. jurisdiction and the U.S. federal statutory tax rate of 35% in 2017 and 21% in 2018. The amount shown on such table for incremental net tax (benefit) on earnings and losses on non-U.S. and non-tax group companies includes, as applicable, (i) deferred income taxes (or deferred income tax benefits) associated with the current-year change in the aggregate amount of undistributed earnings of our Chemicals Segment’s Canadian subsidiary and, beginning in 2018, the post-1986 undistributed earnings of our Chemicals Segment’s European subsidiaries (such post-1986 undistributed earnings were subject to a permanent reinvestment plan until December 31, 2017), (ii) current U.S. income taxes (or current income tax benefit), including U.S. personal holding company tax, as applicable, attributable to current-year income (losses) of one of Kronos’ non-U.S. subsidiaries, which subsidiary is treated as a dual resident for U.S. income tax purposes, to the extent the current-year income (losses) of such subsidiary is subject to U.S. income tax under the U.S. dual-resident provisions of the Internal Revenue Code, (iv) deferred income taxes associated with our direct investment in Kronos and (v) current and deferred income taxes associated with distributions and earnings from our investment in LandWell and BMI.

Our Chemicals Segment has substantial net operating loss (NOL) carryforwards in Germany (the equivalent of $652 million for German corporate purposes and $.5 million for German trade tax purposes at December 31, 2017) and in Belgium (the equivalent of $50 million for Belgian corporate tax purposes at December 31, 2017), all of which have an indefinite carryforward period. As a result, we have net deferred income tax assets with respect to these two jurisdictions, primarily related to these NOL carryforwards. The German corporate tax is similar to the U.S. federal income tax, and the German trade tax is similar to the U.S. state income tax. As discussed in the 2017 Annual Report, commencing June 30, 2015, we concluded that we were required to recognize a non-cash deferred income tax asset valuation allowance under the more-likely-than-not recognition criteria with respect to our Chemicals Segment’s German and Belgian net deferred income tax assets at such date. During the first six months of 2017, Kronos recognized an aggregate non-cash deferred income tax benefit of $12.7 million as a result of a net decrease in such deferred income tax asset valuation allowance, due to utilizing a portion of both the German and Belgian NOL during the period, including $7.7 million in the second quarter of 2017. As also discussed in the 2017 Annual Report, at June 30, 2017, we concluded we had sufficient positive evidence under the more-likely-than-not recognition criteria to support reversal of the entire valuation allowance related to our Chemicals Segment’s German and Belgian operations. In accordance with the ASC 740-270 guidance regarding accounting for income taxes at interim dates, the amount of the valuation allowance reversed at June 30, 2017 ($149.9 million, of which $141.9 million related to Germany and $8.0 million related to Belgium) relates to our change in judgment at that date regarding the realizability of the related deferred income tax asset as it relates to future years (i.e., 2018 and after). A change in judgment regarding the realizability of deferred tax assets as it relates to the current year is considered in determining the estimated annual effective tax rate for the year and is recognized throughout the year, including interim periods subsequent to the date of the change in judgment. Accordingly, our income tax benefit in calendar 2017 includes an aggregate non-cash deferred income tax benefit of $186.7 million related to the reversal of the German and Belgian valuation allowance, comprised of $12.7 million recognized in the first half of 2017 (noted above) related to the utilization of a portion of both the German and Belgian NOLs during such period, $149.9 million related to the portion of the valuation allowance reversed as of June 30, 2017 and $24.1 million recognized in the second half of 2017 related to the utilization of a portion of both the German and Belgian NOLs during such period. Our deferred income tax asset valuation allowance increased $13.7 million in 2017 as a result of changes in currency exchange rates, which increase was recognized as part of other comprehensive income (loss).

As discussed in the 2017 Annual Report, on December 22, 2017, the 2017 Tax Act was enacted into law. This new tax legislation, among other changes, (i) reduced the U.S. Federal corporate income tax rate from 35% to 21% effective January 1, 2018; (ii) implemented a territorial tax system and imposed a one-time repatriation tax (“Transition Tax”) on the deemed repatriation of the post-1986 undistributed earnings of non-U.S. subsidiaries accumulated up through December 31, 2017, regardless of whether such earnings are repatriated; (iii) eliminated U.S. tax on future non-U.S. earnings (subject to certain exceptions); (iv) eliminated the domestic production activities deduction beginning in 2018; (v) eliminated the net operating loss carryback and provides for an indefinite carryforward period subject to an 80% annual usage limitation; (vi) allows for the expensing of certain capital expenditures; (vii) imposed a tax on global intangible low-tax income (“GILTI”) beginning in 2018; (viii) imposed a base erosion anti-abuse tax (“BEAT”) beginning in 2018; and (ix) amended the rules limiting the deduction for business interest expense beginning in 2018. Following the enactment of the 2017 Tax Act, the Securities and Exchange Commission issued Staff Accounting Bulletin (“SAB”) 118 to provide guidance on the accounting and reporting impacts of the 2017 Tax Act. SAB 118 states that companies should account for changes related to the 2017 Tax Act in the period of enactment if all information is available and the accounting can be completed. In situations where companies do not have enough information to complete the accounting in the period of enactment, a company must either 1) record an estimated provisional amount if the impact of the change can be reasonably estimated; or 2) continue to apply the accounting guidance that was in effect immediately prior to the 2017 Tax Act if the impact of the change cannot be reasonably estimated. If estimated provisional amounts are recorded, SAB 118 provides a measurement period of no longer than one year during which companies should adjust those amounts as additional information becomes available in the reporting period within the measurement period in which such adjustment is determined.

Under GAAP, we are required to revalue our net deferred tax liability associated with our U.S. net deductible temporary differences in the period in which the new tax legislation is enacted based on deferred tax balances as of the enactment date, to reflect the effect of such reduction in the corporate income tax rate. Our temporary differences as of December 31, 2017 were not materially different from our temporary differences as of the enactment date, accordingly revaluation of our net taxable temporary differences was based on our net deferred tax as of December 31, 2017. Such revaluation resulted in a provisional non-cash deferred income tax benefit of $77.1 million recognized as of December 31, 2017 in continuing operations, reducing our net deferred income tax liability. The amounts recorded as of December 31, 2017 as a result of the 2017 Tax Act represent estimates based on information currently available. We have not made any additional measurement-period adjustments to the provisional amounts recorded for this item during the first six months of 2018 because we are still waiting on additional guidance that may impact the income tax effects of the new legislation recognized at December 31, 2017. We will complete our accounting for this item within the prescribed measurement period ending December 22, 2018, pursuant to the guidance under SAB 118, and if we determine an adjustment to the provisional amount recognized at December 31, 2017 is required, we will recognize such adjustment in the reporting period within the SAB 118 measurement period in which such adjustment is determined.

Prior to the enactment of the 2017 Tax Act, the undistributed earnings of our European subsidiaries were deemed to be permanently reinvested (we had not made a similar determination with respect to the undistributed earnings of our Canadian subsidiary). Pursuant to the Transition Tax provisions imposing a one-time repatriation tax on post-1986 undistributed earnings, we recognized a provisional current income tax expense of $76.2 million in the fourth quarter of 2017. The amounts recorded as of December 31, 2017 as a result of the 2017 Tax Act represent estimates based on information currently available. We elected to pay such tax over an eight year period beginning in 2018, including approximately $6.1 million which was paid in April 2018 (for the 2017 tax year) and $3.1 million which was paid in June 2018 (for the 2018 tax year). Of the remaining $67.0 million, $64.0 million is recorded as a noncurrent payable to affiliate (income taxes payable to Contran) classified as a noncurrent liability in our Condensed Consolidated Balance Sheet, and $3.0 million is included with our current payable to affiliate (income taxes payable to Contran) classified as a current liability. Such remaining amounts will be paid in quarterly increments over the remainder of the eight year period. We have not made any measurement-period adjustments to the provisional amounts recorded for this item during the first six months of 2018 because no new information became available during the period that required an adjustment. We are continuing to gather information and await further guidance, primarily from the state jurisdictions in which we operate, and given the complexities of these new rules and the long time period over which information about our subsidiaries is needed, further guidance is necessary in order to determine the amount of the Transition Tax, which may impact the amount of the Transition Tax recognized in the fourth quarter of 2017. We will complete our accounting for this item within the prescribed measurement period ending December 22, 2018, pursuant to the guidance under SAB 118, and if we determine an adjustment to the provisional amount recognized at December 31, 2017 is required, we will recognize such adjustment in the reporting period within the SAB 118 measurement period in which such adjustment is determined.

Prior to the enactment of the 2017 Tax Act the undistributed earnings of our European subsidiaries were deemed to be permanently reinvested (we had not made a similar determination with respect to the undistributed earnings of our Canadian subsidiary). As a result of the implementation of a territorial tax system under the 2017 Tax Act, effective January 1, 2018, and the Transition Tax which in effect taxes the post-1986 undistributed earnings of our non-U.S. subsidiaries accumulated up through December 31, 2017, we determined effective December 31, 2017 that all of the post-1986 undistributed earnings of our European subsidiaries are not permanently reinvested. Accordingly, in the fourth quarter of 2017 we recognized an aggregate provisional non-cash deferred income tax expense of $5.3 million based on our reasonable estimates of the U.S. state and non-U.S. income tax and withholding tax liability attributable to all of such previously-considered permanently reinvested undistributed earnings through December 31, 2017. The amounts recorded as of December 31, 2017 as a result of the 2017 Tax Act represent estimates based on information currently available. We have not made any measurement-period adjustments to the provisional amounts recorded at December 31, 2017 for this item during the first six months of 2018. However, we recorded a provisional non-cash deferred income tax expense of $2.3 million for the estimated U.S. state and non-U.S. income tax and withholding tax liability attributable to the 2018 undistributed earnings of our non-U.S. subsidiaries in the first six months of 2018, including withholding taxes related to the undistributed earnings of our Canadian subsidiary. We are continuing our review of certain other provisions under the 2017 Tax Act and waiting on further guidance primarily from the state jurisdictions in which we operate that may impact our determination of the aggregate temporary differences attributable to our investments in our non-U.S. subsidiaries. We will complete our accounting for this item within the prescribed measurement period ending December 22, 2018, pursuant to the guidance under SAB 118, and if we determine an adjustment to the provisional amount recognized at December 31, 2017 and June 30, 2018 are required, we will recognize such adjustment in the reporting period within the SAB 118 measurement period in which such adjustment is determined.

Under U.S. GAAP, as it relates to the new GILTI tax rules, we are allowed to make an accounting policy choice of either (1) treating taxes due on future U.S. inclusions in taxable income related to GILTI as a current-period expense when incurred (the “period cost method”) or (2) factoring such amounts into the measurement of our deferred taxes (the “deferred method”). Our selection of an accounting policy related to the GILTI tax provisions will depend, in part, on analyzing our global income to determine whether we expect to have future U.S. inclusions in taxable income related to GILTI and, if so, what the impact is expected to be. While our future global operations depend on a number of different factors, we do expect to have future U.S. inclusions in taxable income related to GILTI. As such, we performed an analysis of GILTI’s impact on our provision and determined the impact is not material. Because the impact is not material to our tax provision, we have not recorded any adjustments related to potential GILTI tax in our financial statements in the first six months of 2018. Further, we have not made a policy decision regarding whether to record deferred taxes on GILTI or record GILTI tax as a current-period expense when incurred. We will complete our policy election for this item within the prescribed measurement period ending December 22, 2018, pursuant to the guidance under SAB 118 and if we determine such policy election impacts our provision, we will recognize an adjustment in the reporting period within the SAB 118 measurement period in which such adjustment is determined. Similarly, we have evaluated the tax impact of BEAT on our tax provision in the first six months of 2018 and determined that the tax law has no material impact on our tax provision as we have historically not entered into international payments between related parties that are unrelated to cost of goods sold.

The 2017 Tax Act amended the rules limiting the deduction for business interest expense beginning in 2018. The limitation applies to all taxpayers and our annual deduction for business interest expense is limited to the sum of our business interest income and 30% of our adjusted taxable income as defined under the 2017 Tax Act. Any business interest expense not allowed as a deduction as a result of the limitation may be carryforward indefinitely and is treated as interest paid in the carryforward year subject to the respective year’s limitation. We have determined that our interest expense for 2018 is limited under these provisions, in part because of the loss we recognized on the sale of WCS for income tax purposes. We have concluded that we are required to recognize a non-cash deferred income tax asset valuation allowance under the more-likely-than-not recognition criteria with respect to a portion of our deferred tax asset attributable to the nondeductible amount of business interest expense carryforward. Consequently, our provision for income taxes in the first six months of 2018 includes a non-cash deferred income tax expense of $7.1 million for the amount of such deferred income tax asset that we have determined does not meet the more-likely-than-not recognition criteria. In accordance with the ASC 740 guidance regarding intra-period allocation of income taxes, $5.1 million of such non-cash deferred income tax expense is classified as part of the income taxes associated with the pre-tax gain we recognized for financial reporting purposes on the sale of WCS which is classified as part of discontinued operations as discussed in Note 3, and the remaining $2.0 million is classified as part of our provision for income taxes attributable to continuing operations. Our estimate of the amount of such non-cash deferred income tax asset valuation allowance we are required to recognize, and the allocation of such valuation allowance between continuing and discontinued operations under the intra-period guidance of ASC 740, can change during the year due to, among other things, changes in our estimate of the amount of business interest expense, business interest income and adjusted taxable income for the current year.

We recognize deferred income taxes with respect to the excess of the financial reporting carrying amount over the income tax basis of our direct investment in Kronos common stock because the exemption under GAAP to avoid such recognition of deferred income taxes is not available to us. At December 31, 2017, we had recognized a deferred income tax liability with respect to our direct investment in Kronos of $157.6 million. There is a maximum amount (or cap) of such deferred income taxes we are required to recognize with respect to our direct investment in Kronos. The maximum amount of such deferred income tax liability we would be required to have recognized (the cap) is $173.0 million. During the first six months of 2018, we recognized a non-cash deferred income tax expense with respect to our direct investment in Kronos of $7.5 million for the increase in the deferred income taxes required to be recognized with respect to the excess of the financial reporting carrying amount over the income tax basis of our direct investment in Kronos common stock, to the extent such increase related to our equity in Kronos’ net income during such period. We recognized a similar non-cash deferred income tax expense of $39.5 million in the first six months of 2017. A portion of the net change with respect to the excess of the financial reporting carrying amount over the income tax basis of our direct investment in Kronos common stock during such periods related to our equity in Kronos’ other comprehensive income (loss) items, and the amounts shown in the table above for income tax expense (benefit) allocated to other comprehensive income (loss) items includes amounts related to our equity in Kronos’ other comprehensive income (loss) items. Due to uncertainties and complexities of the new legislation, we are still evaluating the impact of the one-time deemed repatriation of the post-1986 undistributed earnings of our non-U.S. subsidiaries up through December 31, 2017 as it relates to the income tax basis of our direct investment in Kronos. Our deferred income tax liability with respect to our direct investment in Kronos and the deferred income taxes recognized at December 31, 2017 and June 30, 2018 represents our reasonable estimate and, in accordance with the guidance in SAB 118, such amounts are provisional and subject to adjustment as we obtain additional information and complete our analysis of the impact of the new legislation as it relates to the income tax basis of our direct investment in Kronos. We made no adjustments to the provisional amounts recorded at December 31, 2017 as it relates to the income tax basis of our direct investment in Kronos at such date in the first six months of 2018. We will complete our accounting for these items within the prescribed measurement period ending December 22, 2018, pursuant to the guidance under SAB 118 and if such estimates change, we will recognize an adjustment in the reporting period within the measurement period in which such adjustment is determined.

None of our U.S. and non-U.S. tax returns are currently under examination. As a result of prior audits in certain jurisdictions, which are now settled, in 2008 Kronos filed Advance Pricing Agreement Requests with the tax authorities in the U.S., Canada and Germany. These requests have been under review with the respective tax authorities since 2008 and prior to 2016, it was uncertain whether an agreement would be reached between the tax authorities and whether Kronos would agree to execute and finalize such agreements. During the third quarter of 2017, Kronos’ Canadian subsidiary executed and finalized an Advance Pricing Agreement with the Competent Authority for Canada (the “Canada-Germany APA”) effective for tax years 2005 - 2017. During the first quarter of 2018, Kronos’ German subsidiary executed and finalized the related Advance Pricing Agreement with the Competent Authority for Germany (the “Germany-Canada APA”) effective for tax years 2005 - 2017. In the first quarter of 2018, we recognized a net $1.4 million non-cash income tax benefit related to an APA tax settlement payment between Kronos’ German and Canadian subsidiaries.

We believe we have adequate accruals for additional taxes and related interest expense which could ultimately result from tax examinations. We believe the ultimate disposition of tax examinations should not have a material adverse effect on our consolidated financial position, results of operations or liquidity. We currently estimate that our unrecognized tax benefits will decrease by approximately $1.8 million during the next twelve months primarily due to certain adjustments to our prior year returns and the expiration of certain statutes of limitations.

Noncontrolling Interest in Subsidiaries

6 Months Ended

Jun. 30, 2018

Noncontrolling Interest [Abstract]

Noncontrolling Interest in Subsidiaries

Note 15—Noncontrolling interest in subsidiaries:

	December 31, 2017		June 30, 2018
	(In millions)
Noncontrolling interest in net assets:
Kronos Worldwide	$	204.9	$	224.2
NL Industries		71.1		66.0
CompX International		17.8		18.7
BMI		26.0		27.6
LandWell		22.5		25.2
Total	$	342.3	$	361.7

	Six months ended June 30,
	2017		2018
	(In millions)
Noncontrolling interest in net income (loss) of subsidiaries:
Kronos Worldwide	$	45.6	$	29.0
NL Industries		8.4		(4.8	)
CompX International		.9		1.1
BMI		.2		.7
LandWell		.3		1.2
Total	$	55.4	$	27.2

Accumulated Other Comprehensive Loss

6 Months Ended

Jun. 30, 2018

Equity [Abstract]

Accumulated Other Comprehensive Loss

Note 16—Accumulated other comprehensive loss:

Changes in accumulated other comprehensive income (loss) attributable to Valhi stockholders for the three and six months ended June 30, 2017 and 2018 are presented in the table below.

	Three months ended June 30,						Six months ended June 30,
	2017			2018			2017			2018
	(In millions)
Accumulated other comprehensive income (loss), net of tax and noncontrolling interest:
Marketable securities:
Balance at beginning of period	$	1.7		$	1.6		$	1.7		$	1.7
Other comprehensive loss – unrealized losses arising during the period		—			—			—			(.1	)
Balance at end of period	$	1.7		$	1.6		$	1.7		$	1.6
Interest rate swap:
Balance at beginning of period	$	(.8	)	$	—		$	(1.2	)	$	—
Other comprehensive income (loss):
Unrealized losses arising during the year		(.5	)		—			(.5	)		—
Less reclassification adjustment for amounts included in interest expense		.2			—			.6			—
Balance at end of period	$	(1.1	)	$	—		$	(1.1	)	$	—
Currency translation adjustment:
Balance at beginning of period	$	(83.1	)	$	(46.9	)	$	(88.5	)	$	(54.1	)
Other comprehensive income (loss)		9.3			(16.7	)		14.7			(9.5	)
Balance at end of period	$	(73.8	)	$	(63.6	)	$	(73.8	)	$	(63.6	)
Defined benefit pension plans:
Balance at beginning of period	$	(135.0	)	$	(127.1	)	$	(137.0	)	$	(129.0	)
Other comprehensive income— amortization of prior service cost and net losses included in net periodic pension cost		.6			1.9			2.6			3.8
Balance at end of period	$	(134.4	)	$	(125.2	)	$	(134.4	)	$	(125.2	)
OPEB plans:
Balance at beginning of period	$	2.9		$	2.2		$	3.1		$	2.4
Other comprehensive loss – amortization of prior service credit		(.2	)		(.2	)		(.4	)		(.4	)
Balance at end of period	$	2.7		$	2.0		$	2.7		$	2.0
Total accumulated other comprehensive income (loss):
Balance at beginning of period	$	(214.3	)	$	(170.2	)	$	(221.9	)	$	(179.0	)
Other comprehensive income (loss)		9.4			(15.0	)		17.0			(6.2	)
Balance at end of period	$	(204.9	)	$	(185.2	)	$	(204.9	)	$	(185.2	)

See Note 12 for amounts related to our defined benefit pension plans and OPEB plans.

Commitments and Contingencies

6 Months Ended

Jun. 30, 2018

Commitments And Contingencies Disclosure [Abstract]

Commitments and Contingencies

Note 17 – Commitments and contingencies:

Lead pigment litigation – NL

NL’s former operations included the manufacture of lead pigments for use in paint and lead-based paint. NL, other former manufacturers of lead pigments for use in paint and lead-based paint (together, the “former pigment manufacturers”), and the Lead Industries Association (LIA), which discontinued business operations in 2002, have been named as defendants in various legal proceedings seeking damages for personal injury, property damage and governmental expenditures allegedly caused by the use of lead-based paints. Certain of these actions have been filed by or on behalf of states, counties, cities or their public housing authorities and school districts, and certain others have been asserted as class actions. These lawsuits seek recovery under a variety of theories, including public and private nuisance, negligent product design, negligent failure to warn, strict liability, breach of warranty, conspiracy/concert of action, aiding and abetting, enterprise liability, market share or risk contribution liability, intentional tort, fraud and misrepresentation, violations of state consumer protection statutes, supplier negligence and similar claims.

The plaintiffs in these actions generally seek to impose on the defendants responsibility for lead paint abatement and health concerns associated with the use of lead-based paints, including damages for personal injury, contribution and/or indemnification for medical expenses, medical monitoring expenses and costs for educational programs. To the extent the plaintiffs seek compensatory or punitive damages in these actions, such damages are generally unspecified. In some cases, the damages are unspecified pursuant to the requirements of applicable state law. A number of cases are inactive or have been dismissed or withdrawn. Most of the remaining cases are in various pre-trial stages. Some are on appeal following dismissal or summary judgment rulings or a trial verdict in favor of either the defendants or the plaintiffs.

We believe that these actions are without merit, and we intend to continue to deny all allegations of wrongdoing and liability and to defend against all actions vigorously. Other than with respect to the Santa Clara case discussed below, we do not believe it is probable that we have incurred any liability with respect to all of the lead pigment litigation cases to which we are a party, and with respect to all such lead pigment litigation cases to which we are a party, other than with respect to the Santa Clara case discussed below, we believe liability to us that may result, if any, in this regard cannot be reasonably estimated, because:

•

NL has never settled any of the market share, intentional tort, fraud, nuisance, supplier negligence, breach of warranty, conspiracy, misrepresentation, aiding and abetting, enterprise liability, or statutory cases (subject to the final outcome of the Santa Clara case discussed below),

•

no final, non-appealable adverse verdicts have ever been entered against NL (subject to the final outcome of the Santa Clara case discussed below), and

•

NL has never ultimately been found liable with respect to any such litigation matters, including over 100 cases over a twenty-year period for which we were previously a party and for which we have been dismissed without any finding of liability.

Accordingly, other than with respect to the Santa Clara case discussed below, we have not accrued any amounts for any of the pending lead pigment and lead-based paint litigation cases filed by or on behalf of states, counties, cities or their public housing authorities and school districts, or those asserted as class actions and we have determined that liability to us which may result, if any, cannot be reasonably estimated at this time because there is no prior history of a loss of this nature on which an estimate could be made and there is no substantive information available upon which an estimate could be based.

In one of these lead pigment cases, in April 2000 NL was served with a complaint in County of Santa Clara v. Atlantic Richfield Company, et al, (Superior Court of the State of California, County of Santa Clara, Case No. 1-00-CV-788657) brought by a number of California government entities against former lead pigment manufacturers, the LIA and certain paint manufacturers. The County of Santa Clara sought to recover compensatory damages for funds the plaintiffs had expended or would in the future expend for medical treatment, educational expenses, abatement or other costs due to exposure to, or potential exposure to, lead paint, disgorgement of profit, and punitive damages. In July 2003, the trial judge granted defendants’ motion to dismiss all remaining claims. Plaintiffs appealed and the intermediate appellate court reinstated public nuisance, negligence, strict liability, and fraud claims in March 2006. A fourth amended complaint was filed in March 2011 on behalf of The People of California by the County Attorneys of Alameda, Ventura, Solano, San Mateo, Los Angeles and Santa Clara, and the City Attorneys of San Francisco, San Diego and Oakland. That complaint alleged that the presence of lead paint created a public nuisance in each of the prosecuting jurisdictions and sought its abatement. In July and August 2013, the case was tried. In January 2014, the judge issued a judgment finding NL, The Sherwin Williams Company and ConAgra Grocery Products Company jointly and severally liable for the abatement of lead paint in pre-1980 homes, and ordered the defendants to pay an aggregate $1.15 billion to the people of the State of California to fund such abatement. The trial court’s judgment also found that to the extent any abatement funds remained unspent after four years, such funds were to be returned to the defendants. In February 2014, NL filed a motion for a new trial, and in March 2014 the trial court denied the motion. Subsequently in March 2014, NL filed a notice of appeal with the Sixth District Court of Appeal for the State of California. On November 14, 2017, the Sixth District Court of Appeal issued its opinion, upholding the trial court’s judgment, except that it reversed the portion of the judgment requiring abatement of homes built between 1951 and 1980 which significantly reduced the number of homes subject to the abatement order. In addition, the appellate court ordered the case be remanded to the trial court to recalculate the amount of the abatement fund, to limit it to the amount necessary to cover the cost of investigating and remediating pre-1951 homes, and to hold an evidentiary hearing to appoint a suitable receiver. In addition, the appellate court found that NL and the other defendants had the right to seek recovery from liable parties that contributed to a hazardous condition at a particular property. Subsequently, we and the other defendants filed a Petition with the California Supreme Court seeking its review of a number of issues. On February 14, 2018, the California Supreme Court denied such petition. In July 2018, NL and the other defendants filed appeals with the U.S. Supreme Court, seeking its review of two federal issues in the trial court’s original judgment. Review by the U.S. Supreme Court is discretionary, and there can be no assurance that the U.S. Supreme Court would agree to hear any such appeal, or if they would agree to hear any such appeal, that the U.S. Supreme Court would rule in favor of us and the other defendants.

Under such remand ordered by the appellate court, the trial court would among other things, (i) recalculate the amount of the abatement fund, excluding remediation of homes built between 1951 and 1980, (ii) hold an evidentiary hearing to appoint a suitable receiver for the abatement fund and (iii) enter an order setting forth its rulings on these issues. NL believes any party will have a right to appeal any of these new decisions to be made by the trial court from the remand of the case. Several uncertainties exist with respect to the new decisions to be made by the trial court from the remand of the case, including the following:

•

The appellate court has remanded the case back to the trial court to recalculate the total amount of the abatement, limiting the abatement to pre-1951 homes. In this regard, NL and the other defendants have filed a brief with the trial court proposing a recalculated maximum abatement fund amount of no more than $409 million and plaintiffs have filed a brief proposing an abatement fund amount of $730 million, and the trial court has scheduled a case-management hearing regarding the recalculated abatement fund amount for August 17, 2018;

•

The appellate court upheld NL’s and the other defendants’ right to seek contribution from other liable parties (e.g. property owners who have violated the applicable housing code) on a house-by-house basis. The method by which the trial court would undertake to determine such house-by-house responsibility, and the outcome of such a house-by-house determination, is not presently known;

•

Participation in any abatement program by each homeowner is voluntary, and each homeowner would need to consent to allowing someone to come into the home to undertake any inspection and abatement, as well as consent to the nature, timing and extent of any abatement. The original trial court’s judgment unrealistically assumed 100% participation by the affected homeowners. Actual participation rates are likely to be less than 100% (the ultimate extent of participation is not presently known);

•

The remedy ordered by the trial court is an abatement fund. The trial court ordered that any funds unspent after four years are to be returned to the defendants (this provision of the trial court’s original judgment was not overturned by the appellate court). As noted above, the actual number of homes which would participate in any abatement, and the nature, timing and extent of any such abatement, is not presently known; and

•

NL and the other two defendants are jointly and severally liable for the abatement, and we do not believe any individual defendant would be 100% responsible for the cost of any abatement.

In May 2018, NL and the plaintiffs entered into a settlement agreement pursuant to which, as supplemented, the plaintiffs would be paid an aggregate of $80 million, in return for which we would be dismissed from the case with prejudice and all pending and future claims, causes of action, cross-complaints, actions or proceedings against us and our affiliates for indemnity, contribution, reimbursement or declaratory relief in respect to the case would be barred, discharged and enjoined as a matter of applicable law. Of such $80 million, $65 million would be paid by NL and $15 million would be provided by one of NL’s former insurance carriers that has previously placed such amount on deposit with the trial court in satisfaction of potential liability such former carrier might have with respect to the case under certain insurance policies we had with such former carrier. Of such $65 million which would be paid by us, $45 million would be paid upon the trial court’s approval of the terms of the settlement, and the remaining $20 million would be paid in five annual installments beginning four years from such approval ($6 million for the first installment, $5 million for the second installment and $3 million for each of the third, fourth and fifth installments). The settlement agreement is subject to a number of conditions including the trial court’s approval of the terms of the settlement (which trial court approval includes a determination that such settlement agreement meets the standards for a “good faith” settlement under applicable California law). The other defendants have filed motions with the trial court objecting to the terms of the settlement. NL believes the settlement agreement satisfies the standards for a “good faith” settlement under applicable California law.

The Santa Clara case is unusual in that this is the second time that an adverse verdict in the lead pigment litigation has been entered against NL (the first adverse verdict against us was ultimately overturned on appeal). Given the appellate court’s November 2017 ruling, and the denial of an appeal by the California Supreme Court, we have concluded that the likelihood of a loss in this case has reached a standard of “probable” as contemplated by ASC 450. With all of the uncertainties that exist with respect to the new decisions to be made by the trial court from the remand of the case, as noted above, we had previously concluded that the amount of such loss could not be reasonably estimated (nor could a range of loss be reasonably estimated). However, the terms of the settlement agreement entered into by NL and the plaintiffs in May 2018, as supplemented, provides evidence that the amount of the loss to us can now be reasonably estimated. For financial reporting purposes, we discounted the five payments aggregating $20 million to be paid in installments to their estimated net present value, using a discount rate of 3.0% per annum. Such net present value is $17 million. Accordingly, in the second quarter of 2018 we recognized a net $62 million pre-tax charge with respect to this matter ($45 million for the amount to be paid by us upon the trial court’s approval of the terms of the settlement and $17 million for the net present value of the five payments aggregating $20 million to be paid by us in installments beginning four years from such approval), representing the net amount we would pay in full settlement of our liability under the terms of the proposed settlement agreement. For purposes of our condensed consolidated balance sheet, we have presented the aggregate $45 million that would be paid to the plaintiffs upon the trial court’s approval of the terms of the settlement and the $15 million that would be paid to the plaintiffs from the amount placed on deposit with the trial court by one of NL’s former insurance carriers as a current liability, $17 million for the net present value of the five payments aggregating $20 million to be paid by us in installments beginning four years from such approval as a noncurrent liability and the $15 million portion of such aggregate $80 million undiscounted amount which would be funded from the amount placed on deposit with the trial court by one of our former insurance carriers as a current insurance recovery receivable. See Notes 4, 9 and 10.

New cases may continue to be filed against NL. We cannot assure you that we will not incur liability in the future in respect of any of the pending or possible litigation in view of the inherent uncertainties involved in court and jury rulings. In the future, if new information regarding such matters becomes available to us (such as a final, non-appealable adverse verdict against us or otherwise ultimately being found liable with respect to such matters), at that time we would consider such information in evaluating any remaining cases then-pending against us as to whether it might then have become probable we have incurred liability with respect to these matters, and whether such liability, if any, could have become reasonably estimable. The resolution of any of these cases could result in the recognition of a loss contingency accrual that could have a material adverse impact on our net income for the interim or annual period during which such liability is recognized and a material adverse impact on our consolidated financial condition and liquidity.

Environmental matters and litigation

Our operations are governed by various environmental laws and regulations. Certain of our businesses are and have been engaged in the handling, manufacture or use of substances or compounds that may be considered toxic or hazardous within the meaning of applicable environmental laws and regulations. As with other companies engaged in similar businesses, certain of our past and current operations and products have the potential to cause environmental or other damage. We have implemented and continue to implement various policies and programs in an effort to minimize these risks. Our policy is to maintain compliance with applicable environmental laws and regulations at all of our plants and to strive to improve environmental performance. From time to time, we may be subject to environmental regulatory enforcement under U.S. and non-U.S. statutes, the resolution of which typically involves the establishment of compliance programs. It is possible that future developments, such as stricter requirements of environmental laws and enforcement policies, could adversely affect our production, handling, use, storage, transportation, sale or disposal of such substances. We believe that all of our facilities are in substantial compliance with applicable environmental laws.

Certain properties and facilities used in NL’s former operations, including divested primary and secondary lead smelters and former mining locations, are the subject of civil litigation, administrative proceedings or investigations arising under federal and state environmental laws and common law. Additionally, in connection with past operating practices, we are currently involved as a defendant, potentially responsible party (“PRP”) or both, pursuant to the Comprehensive Environmental Response, Compensation and Liability Act, as amended by the Superfund Amendments and Reauthorization Act (“CERCLA”), and similar state laws in various governmental and private actions associated with waste disposal sites, mining locations, and facilities that we or our predecessors, our subsidiaries or their predecessors currently or previously owned, operated or used, certain of which are on the United States Environmental Protection Agency’s (“EPA”) Superfund National Priorities List or similar state lists. These proceedings seek cleanup costs, damages for personal injury or property damage and/or damages for injury to natural resources. Certain of these proceedings involve claims for substantial amounts. Although we may be jointly and severally liable for these costs, in most cases we are only one of a number of PRPs who may also be jointly and severally liable, and among whom costs may be shared or allocated. In addition, we are occasionally named as a party in a number of personal injury lawsuits filed in various jurisdictions alleging claims related to environmental conditions alleged to have resulted from our operations.

Obligations associated with environmental remediation and related matters are difficult to assess and estimate for numerous reasons including the:

•

complexity and differing interpretations of governmental regulations,

•

number of PRPs and their ability or willingness to fund such allocation of costs,

•

financial capabilities of the PRPs and the allocation of costs among them,

•

solvency of other PRPs,

•

multiplicity of possible solutions,

•

number of years of investigatory, remedial and monitoring activity required,

•

uncertainty over the extent, if any, to which our former operations might have contributed to the conditions allegedly giving rise to such personal injury, property damage, natural resource and related claims, and

•

number of years between former operations and notice of claims and lack of information and documents about the former operations.

In addition, the imposition of more stringent standards or requirements under environmental laws or regulations, new developments or changes regarding site cleanup costs or the allocation of costs among PRPs, solvency of other PRPs, the results of future testing and analysis undertaken with respect to certain sites or a determination that we are potentially responsible for the release of hazardous substances at other sites, could cause our expenditures to exceed our current estimates. We cannot assure you that actual costs will not exceed accrued amounts or the upper end of the range for sites for which estimates have been made, and we cannot assure you that costs will not be incurred for sites where no estimates presently can be made. Further, additional environmental and related matters may arise in the future. If we were to incur any future liability, this could have a material adverse effect on our consolidated financial statements, results of operations and liquidity.

We record liabilities related to environmental remediation and related matters (including costs associated with damages for personal injury or property damage and/or damages for injury to natural resources) when estimated future expenditures are probable and reasonably estimable. We adjust such accruals as further information becomes available to us or as circumstances change. Unless the amounts and timing of such estimated future expenditures are fixed and reasonably determinable, we generally do not discount estimated future expenditures to their present value due to the uncertainty of the timing of the payout. We recognize recoveries of costs from other parties, if any, as assets when their receipt is deemed probable. At December 31, 2017 we had not recognized any material receivables and at June 30, 2018, we have recognized $15.0 million of receivables for recoveries related to the California case discussed above.

We do not know and cannot estimate the exact time frame over which we will make payments for our accrued environmental and related costs. The timing of payments depends upon a number of factors, including but not limited to the timing of the actual remediation process; which in turn depends on factors outside of our control. At each balance sheet date, we estimate the amount of our accrued environmental and related costs which we expect to pay within the next twelve months, and we classify this estimate as a current liability. We classify the remaining accrued environmental costs as a noncurrent liability.

The table below presents a summary of the activity in our accrued environmental costs during the first six months of 2018.

	Amount
	(In millions)
Balance at the beginning of the year	$	117.5
Additions charged to expense, net		4.5
Payments, net		(1.1	)
Balance at the end of period	$	120.9
Amounts recognized in our Condensed Consolidated Balance Sheet at the end of the period:
Current liabilities	$	19.6
Noncurrent liabilities		101.3
Total	$	120.9

NL – On a quarterly basis, NL evaluates the potential range of its liability for environmental remediation and related costs at sites where it has been named as a PRP or defendant. At June 30, 2018, NL had accrued approximately $115 million related to approximately 38 sites associated with remediation and related matters that it believes are at the present time and/or in their current phase reasonably estimable. The upper end of the range of reasonably possible costs to NL for remediation and related matters for which we believe it is possible to estimate costs is approximately $145 million, including the amount currently accrued.

NL believes that it is not reasonably possible to estimate the range of costs for certain sites. At June 30, 2018, there were approximately 5 sites for which NL is not currently able to estimate a range of costs. For these sites, generally the investigation is in the early stages, and NL is unable to determine whether or not NL actually had any association with the site, the nature of its responsibility, if any, for the contamination at the site and the extent of contamination at and cost to remediate the site. The timing and availability of information on these sites is dependent on events outside of our control, such as when the party alleging liability provides information to us. At certain of these previously inactive sites, NL has received general and special notices of liability from the EPA and/or state agencies alleging that NL, sometimes with other PRPs, are liable for past and future costs of remediating environmental contamination allegedly caused by former operations. These notifications may assert that NL, along with any other alleged PRPs, are liable for past and/or future clean-up costs. As further information becomes available to us for any of these sites which would allow us to estimate a range of costs, we would at that time adjust our accruals. Any such adjustment could result in the recognition of an accrual that would have a material effect on our consolidated financial statements, results of operations and liquidity.

Other – We have also accrued approximately $5.9 million at June 30, 2018 for other environmental cleanup matters.

Insurance coverage claims

We are involved in certain legal proceedings with a number of our former insurance carriers regarding the nature and extent of the carriers’ obligations to us under insurance policies with respect to certain lead pigment and asbestos lawsuits. The issue of whether insurance coverage for defense costs or indemnity or both will be found to exist for our lead pigment and asbestos litigation depends upon a variety of factors and we cannot assure you that such insurance coverage will be available.

We have agreements with certain of our former insurance carriers pursuant to which the carriers reimburse us for a portion of our future lead pigment litigation defense costs, and one such carrier reimburses us for a portion of our future asbestos litigation defense costs. We are not able to determine how much we will ultimately recover from these carriers for defense costs incurred by us because of certain issues that arise regarding which defense costs qualify for reimbursement. While we continue to seek additional insurance recoveries, we do not know if we will be successful in obtaining reimbursement for either defense costs or indemnity. Accordingly, we recognize insurance recoveries in income only when receipt of the recovery is probable and we are able to reasonably estimate the amount of the recovery.

For additional discussion of certain litigation involving NL and certain of its former insurance carriers, please refer to our 2017 Annual Report.

Other litigation

NL—– NL has been named as a defendant in various lawsuits in several jurisdictions, alleging personal injuries as a result of occupational exposure primarily to products manufactured by our former operations containing asbestos, silica and/or mixed dust. In addition, some plaintiffs allege exposure to asbestos from working in various facilities previously owned and/or operated by NL. There are 110 of these types of cases pending, involving a total of approximately 583 plaintiffs. In addition, the claims of approximately 8,676 plaintiffs have been administratively dismissed or placed on the inactive docket in Ohio courts. We do not expect these claims will be re-opened unless the plaintiffs meet the courts’ medical criteria for asbestos-related claims. We have not accrued any amounts for this litigation because of the uncertainty of liability and inability to reasonably estimate the liability, if any. To date, we have not been adjudicated liable in any of these matters. Based on information available to us, including:

•

facts concerning historical operations,

•

the rate of new claims,

•

the number of claims from which we have been dismissed, and

•

our prior experience in the defense of these matters,

We believe that the range of reasonably possible outcomes of these matters will be consistent with our historical costs (which are not material). Furthermore, we do not expect any reasonably possible outcome would involve amounts material to our consolidated financial position, results of operations or liquidity. We have sought and will continue to vigorously seek, dismissal and/or a finding of no liability from each claim. In addition, from time to time, we have received notices regarding asbestos or silica claims purporting to be brought against former subsidiaries, including notices provided to insurers with which we have entered into settlements extinguishing certain insurance policies. These insurers may seek indemnification from us.

Kronos— In March 2013, Kronos was served with the complaint, Los Gatos Mercantile, Inc. d/b/a Los Gatos Ace Hardware, et al v. E.I. Du Pont de Nemours and Company, et al. (United States District Court, for the Northern District of California, Case No. 3:13-cv-01180-SI). The defendants include us, E.I. Du Pont de Nemours & Company, Huntsman International LLC and Millennium Inorganic Chemicals, Inc. As amended by plaintiffs’ third amended complaint (Harrison, Jan, et al v. E.I. Du Pont de Nemours and Company, et al), plaintiffs seek to represent a class consisting of indirect purchasers of titanium dioxide in the states of Arizona, Arkansas, California, the District of Columbia, Florida, Iowa, Kansas, Massachusetts, Michigan, Minnesota, Mississippi, Missouri, Nebraska, New Hampshire, New Mexico, New York, North Carolina, Oregon and Tennessee that indirectly purchased titanium dioxide from one or more of the defendants on or after March 1, 2002. The complaint alleges that the defendants conspired and combined to fix, raise, maintain, and stabilize the price at which titanium dioxide was sold in the United States and engaged in other anticompetitive conduct. In December 2017, the Court preliminarily approved a settlement agreement with the class plaintiffs. In January 2018, without admitting any fault or wrongdoing, Kronos paid an immaterial amount in full settlement of this matter. We expect final approval of the settlement in the second half of 2018.

In September 2016, Kronos was served with the complaint, Home Depot U.S.A., Inc. v. E.I. DuPont Nemours and Company, et al. (United States District Court, for the Northern District of California, Case No. 3:16-cv-04865). The defendants include us, E.I. Du Pont de Nemours & Company, Huntsman International LLC and Millennium Inorganic Chemicals, Inc. The plaintiff alleges that it indirectly purchased titanium dioxide from one or more of the defendants on or after March 1, 2002. The complaint alleges that the defendants conspired and combined to fix, raise, maintain, and stabilize the price at which titanium dioxide was sold in the United States and engaged in other anticompetitive conduct. In June 2018, without admitting any fault or wrongdoing Kronos entered into a settlement agreement with the plaintiff and paid an immaterial amount in full settlement of this matter.

Other—In addition to the litigation described above, we and our affiliates are involved in various other environmental, contractual, product liability, patent (or intellectual property), employment and other claims and disputes incidental to our present and former businesses. In certain cases, we have insurance coverage for these items, although we do not expect any additional material insurance coverage for our environmental claims. We currently believe that the disposition of all of these various other claims and disputes (including asbestos-related claims), individually or in the aggregate, should not have a material adverse effect on our consolidated financial position, results of operations or liquidity beyond the accruals already provided.

Fair Value Measurements and Financial Instruments

6 Months Ended

Jun. 30, 2018

Fair Value Disclosures [Abstract]

Fair Value Measurements and Financial Instruments

Note 18—Fair value measurements and financial instruments:

The following table summarizes the valuation of our marketable securities, financial instruments and other items recorded on a fair value basis as of:

	Fair Value Measurements
	Total		Quoted Prices in Active Markets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
	(In millions)
Asset
December 31, 2017:
Marketable securities:
Current	$	3.0	$	—	$	3.0	$	—
Noncurrent		255.7		1.3		4.4		250.0
June 30, 2018:
Marketable securities:
Current	$	1.6	$	—	$	1.6	$	—
Noncurrent		256.8		3.8		3.0		250.0

See Note 6 for information on how we determine fair value of our noncurrent marketable securities.

Certain of our sales generated by Chemicals Segment’s non-U.S. operations are denominated in U.S. dollars. Our Chemicals Segment periodically uses currency forward contracts to manage a very nominal portion of currency exchange rate risk associated with trade receivables denominated in a currency other than the holder’s functional currency or similar exchange rate risk associated with future sales. Derivatives that we use are primarily currency forward contracts and interest rate swaps. We have not entered into these contracts for trading or speculative purposes in the past, nor do we currently anticipate entering into such contracts for trading or speculative purposes in the future. Derivatives used to hedge forecasted transactions and specific cash flows associated with financial assets and liabilities denominated in currencies other than the U.S. dollar and which meet the criteria for hedge accounting are designated as cash flow hedges. Consequently, the effective portion of gains and losses is deferred as a component of accumulated other comprehensive income (loss) and is recognized in earnings at the time the hedged item affects earnings. Contracts that do not meet the criteria for hedge accounting are marked-to-market at each balance sheet date with any resulting gain or loss recognized in income currently as part of net currency transactions. The fair value of the currency forward contracts is determined using Level 1 inputs based on the currency spot forward rates quoted by banks or currency dealers. During 2017 and the first six months of 2018, Kronos had no currency forward contracts outstanding.

Interest rate swap contract - See the 2017 Annual Report for a discussion of the interest rate swap Kronos had entered into in August 2015, and which was voluntarily terminated in September 2017.

The following table presents the financial instruments that are not carried at fair value but which require fair value disclosure:

	December 31, 2017				June 30, 2018
	Carrying amount		Fair value		Carrying amount		Fair value
	(In millions)
Cash, cash equivalents and restricted cash equivalents	$	461.7	$	461.7	$	577.9	$	577.9
Deferred payment obligation		9.3		9.3		9.4		9.4
Long-term debt (excluding capitalized leases):
Kronos Senior Notes		471.1		495.1		458.6		449.3
Snake River Sugar Company fixed rate loans		250.0		250.0		250.0		250.0
Valhi credit facility with Contran		284.3		284.3		320.6		320.6
Tremont promissory note payable		13.1		13.1		10.9		10.9
BMI bank note payable		18.8		19.7		18.0		18.9
LandWell note payable to the City of Henderson		2.5		2.5		2.3		2.3

At June 30, 2018, the estimated market price of Kronos’ Senior Notes was €965 per €1,000 principal amount. The fair value of Kronos’ Senior Notes was based on quoted market prices; however, these quoted market prices represent Level 2 inputs because the markets in which the term loan trades were not active. The fair value of our fixed-rate nonrecourse loans from Snake River Sugar Company is based upon the $250 million redemption price of our investment in Amalgamated, which collateralizes the nonrecourse loans (this is a Level 3 input). The fair value of variable interest rate debt and other fixed-rate debt, which represents Level 2 inputs, is deemed to approximate carrying values. See Note 8. Due to their near-term maturities, the carrying amounts of accounts receivable and accounts payable are considered equivalent to fair value. See Notes 4 and 9.

- Definition

The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information.

+ References + Details

Recent Accounting Pronouncements	6 Months Ended
Recent Accounting Pronouncements	Jun. 30, 2018
Accounting Changes And Error Corrections [Abstract]
Recent Accounting Pronouncements	Note 19—Recent accounting pronouncements: Adopted On January 1, 2018, we adopted ASU No. 2014-09, Revenue from Contracts with Customers (Topic 606) for all contracts which were not completed as of January 1, 2018 using the modified retrospective method. Prior to adoption of this standard, we recorded sales of our Chemicals and Component Products Segments when our products were shipped and title and other risks and rewards of ownership had passed to our customer, which was generally at the time of shipment (although in some instances shipping terms were FOB destination point, for which we did not recognize revenue until the product was received by our customer). Following adoption of this standard, we will record sales of our Chemicals and Component Products Segments when we satisfy our performance obligation to our customers by transferring control of our products to them, which we have determined is at the same point in time as when we would have recognized revenue prior to adoption of this new standard. Accordingly, the adoption of Topic 606 as of January 1, 2018 did not have a material impact on our consolidated financial statements as it relates to sales of our Chemicals and Component Products Segments, and we believe adoption of this standard will have a minimal effect on our revenues of our Chemicals and Component Products Segments on an ongoing basis. See Note 11. Revenues from our Real Estate Management and Development Segment are generally under long-term contracts. We collect certain fees from builders when the builder sells a home to a customer which we previously recognized when received and now beginning on January 1, 2018 we recognize these fees as revenue at the time we sell the parcels to the builder versus our previous practice which did not recognize revenue until the homes were sold. Accordingly, upon adoption of ASU 2014-09, such fees we collect from builders when the builder sells a home to a customer are now estimated at the time we sell a parcel to a builder, and such fees are part of the revenue we recognize over time using cost based input methods for our retail land sales in the case of the home participation fee or over the time the homes in the parcel are sold in the case of the marketing fee. Under the transition requirements for adopting this ASU, we recognized the cumulative amount of such revenue that we would have recognized through December 31, 2017, had we recognized such builder fees under this new accounting method ($6.1 million, or $2.7 million, net of applicable income taxes and noncontrolling interest), as a direct increase in our retained earnings as of January 1, 2018. A portion of such builder fees are expected to be collected more than twelve months from the balance sheet date, and such amounts are classified as a noncurrent asset (Land contract receivables), see Note 7. In addition to recognizing such $6.1 million receivable, we recognized a contract asset of $8.8 million and an offsetting liability for deferred revenue of $8.8 million upon the adoption of this ASU for the estimated amount of such builder fees which we expect to receive from future home sales by the builders, which builder fees are not yet recognizable as revenue (and a portion of such contract asset is also classified as a noncurrent receivable along with an equal amount of noncurrent deferred revenue). Had we recognized revenue in 2018 on the same basis we did in 2017, our land sales revenue would have been lower by $.1 million and higher by $.2 million in the second quarter and first six months of 2018, respectively. On January 1, 2018, we adopted ASU 2016-01, Financial Instruments-Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities, which addresses certain aspects related to the recognition, measurement, presentation and disclosure of financial instruments. The ASU requires equity investments (except for those accounted for under the equity method of accounting or those that result in the consolidation of the investee) to generally be measured at fair value with changes in fair value recognized in net income (previously, changes in fair value of such securities were recognized in other comprehensive income). The amendment also requires a number of other changes, including among others: simplifying the impairment assessment for equity instruments without readily determinable fair values; eliminating the requirement for public business entities to disclose methods and assumptions used to determine fair value for financial instruments measured at amortized cost; requiring an exit price notion when measuring the fair value of financial instruments for disclosure purposes; and requiring separate presentation of financial assets and liabilities by measurement category and form of asset. We adopted the new standard prospectively. The most significant aspect of adopting this ASU is the requirement to recognize changes in fair value of our available-for-sale marketable equity securities in net income. At December 31, 2017, our portfolio of marketable equity securities was not material. In March 2017, the FASB issued ASU 2017-07, Compensation— Retirement Benefits (Topic 715) Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost, which requires that the service cost component of net periodic defined benefit pension and OPEB cost be reported in the same line item as other compensation costs for applicable employees incurred during the period. Other components of such net benefit cost are required to be presented in the income statement separately from the service cost component, and below income from operations (if such a subtotal is presented). These other net benefit cost components must be disclosed either on the face of the financial statements or in the notes to the financial statements. In addition only the service cost component is eligible for capitalization in assets where applicable (inventory or internally constructed fixed assets for example). We adopted the amendments in ASU 2017-06 beginning in the first quarter of 2018, with retrospective presentation in our Condensed Consolidated Statements of Income. We began applying ASU 2017-07 prospectively beginning on January 1, 2018 as it relates to the capitalization of the service cost component of net benefit cost into assets (primarily inventory). We are availing ourselves of the practical expedient that permits us to use amounts we previously disclosed as components of our net periodic defined benefit pension and OPEB cost for periods prior to the adoption of this ASU as the estimation basis for applying the retrospective presentation requirements. As a result we have reclassified $2.6 million and $1.7 million previously classified as part of cost of sales and selling, general and administrative expenses, respectively, for the second quarter 2017 and $5.2 million and $3.2 million for the first six months of 2017, to “Other components of net periodic pension and OPEB cost” in our Condensed Consolidated Statement of Income. See Note 12. Pending Adoption In February 2016, the FASB issued ASU 2016-02, Leases (Topic 842), which is a comprehensive rewriting of the lease accounting guidance which aims to increase comparability and transparency with regard to lease transactions. The primary change will be the recognition of lease assets for the right-of-use of the underlying asset and lease liabilities for the obligation to make payments by lessees on the balance sheet for leases currently classified as operating leases. The ASU also requires increased qualitative disclosure about leases in addition to quantitative disclosures currently required. Companies are currently required to use a modified retrospective approach to adoption with a practical expedient which will allow companies to continue to account for existing leases under the prior guidance unless a lease is modified, other than the requirement to recognize the right-of-use asset and lease liability for all operating leases. The changes indicated above will be effective for us beginning in the first quarter of 2019, with early adoption permitted. We expect to adopt ASU 2016-02 beginning in the first quarter of 2019. We are in the process of assessing all of our current leases. We have not yet evaluated the effect this ASU will have on our Consolidated Financial Statements, but given the material amount of our future minimum payments under non-cancellable operating leases at December 31, 2017 discussed in Note 18 to our 2017 Annual Report, we expect to recognize a material right-of-use lease asset and lease liability upon adoption of the ASU. This ASU permits companies to elect certain practical expedients upon adoption, and at adoption we expect to elect such practical expedients related to, among other things, lease classification (in which existing leases classified as operating leases under current GAAP would be classified as an operating lease under the new ASU, and existing leases classified as a capital lease under current GAAP would be classified as a finance lease under the new ASU), nonlease components (in which nonlease components associated with a lease and paid by us to the lessor, such as property taxes, insurance and maintenance, would be treated as a lease component and considered part of minimum lease rent payments), and short-term leases (in which leases with an original term of 12 months or less would be excluded from the recognition requirements of the new ASU). In addition, in July 2018 FASB issued ASU 2018-11, Leases (Topic 842), which amends the transition guidance in ASU 2016-02 to provide for an additional transition method, under which a company would recognize a cumulative-effect adjustment to the opening balance of retained earnings in the period of adoption, and prior period financial statements would not be restated. We expect to elect this new transition method upon adoption.

Organization and Basis of Presentation (Policies)	6 Months Ended
Organization and Basis of Presentation (Policies)	Jun. 30, 2018
Accounting Policies [Abstract]
Organization	Organization— We are majority owned by a wholly-owned subsidiary of Contran Corporation (“Contran”), which owns approximately 92% of our outstanding common stock at June 30, 2018. All of Contran's outstanding voting stock is held by a family trust established for the benefit of Lisa K. Simmons and Serena Simmons Connelly and their children, for which Ms. Simmons and Ms. Connelly are co-trustees, or is held directly by Ms. Simmons and Ms. Connelly or entities related to them. Consequently, Ms. Simmons and Ms. Connelly may be deemed to control Contran and us.
Basis of Presentation	Basis of Presentation—Consolidated in this Quarterly Report are the results of our majority-owned and wholly-owned subsidiaries, including NL Industries, Inc., Kronos Worldwide, Inc., CompX International Inc., Tremont LLC, Basic Management, Inc. (“BMI”) and The LandWell Company (“LandWell”). Kronos (NYSE: KRO), NL (NYSE: NL), and CompX (NYSE American: CIX) each file periodic reports with the Securities and Exchange Commission (“SEC”). In January 2018, we sold Waste Control Specialists LLC (“WCS”). See Note 3. The unaudited Condensed Consolidated Financial Statements contained in this Quarterly Report have been prepared on the same basis as the audited Consolidated Financial Statements included in our Annual Report on Form 10-K for the year ended December 31, 2017 that we filed with the SEC on March 15, 2018 (the “2017 Annual Report”). In our opinion, we have made all necessary adjustments (which include only normal recurring adjustments, other than the gain on the sale of WCS recognized in the first quarter of 2018 as discussed in Note 3), in order to state fairly, in all material respects, our consolidated financial position, results of operations and cash flows as of the dates and for the periods presented. We have condensed the Consolidated Balance Sheet at December 31, 2017 contained in this Quarterly Report as compared to our audited Consolidated Financial Statements at that date, and we have omitted certain information and footnote disclosures (including those related to the Consolidated Balance Sheet at December 31, 2017) normally included in financial statements prepared in accordance with accounting principles generally accepted in the United States of America (“GAAP”). Our results of operations for the interim periods ended June 30, 2018 may not be indicative of our operating results for the full year. The Condensed Consolidated Financial Statements contained in this Quarterly Report should be read in conjunction with our 2017 Consolidated Financial Statements contained in our 2017 Annual Report. Unless otherwise indicated, references in this report to “we,” “us” or “our” refer to Valhi, Inc. and its subsidiaries (NYSE: VHI), taken as a whole.
Recent accounting pronouncements	Adopted On January 1, 2018, we adopted ASU No. 2014-09, Revenue from Contracts with Customers (Topic 606) for all contracts which were not completed as of January 1, 2018 using the modified retrospective method. Prior to adoption of this standard, we recorded sales of our Chemicals and Component Products Segments when our products were shipped and title and other risks and rewards of ownership had passed to our customer, which was generally at the time of shipment (although in some instances shipping terms were FOB destination point, for which we did not recognize revenue until the product was received by our customer). Following adoption of this standard, we will record sales of our Chemicals and Component Products Segments when we satisfy our performance obligation to our customers by transferring control of our products to them, which we have determined is at the same point in time as when we would have recognized revenue prior to adoption of this new standard. Accordingly, the adoption of Topic 606 as of January 1, 2018 did not have a material impact on our consolidated financial statements as it relates to sales of our Chemicals and Component Products Segments, and we believe adoption of this standard will have a minimal effect on our revenues of our Chemicals and Component Products Segments on an ongoing basis. See Note 11. Revenues from our Real Estate Management and Development Segment are generally under long-term contracts. We collect certain fees from builders when the builder sells a home to a customer which we previously recognized when received and now beginning on January 1, 2018 we recognize these fees as revenue at the time we sell the parcels to the builder versus our previous practice which did not recognize revenue until the homes were sold. Accordingly, upon adoption of ASU 2014-09, such fees we collect from builders when the builder sells a home to a customer are now estimated at the time we sell a parcel to a builder, and such fees are part of the revenue we recognize over time using cost based input methods for our retail land sales in the case of the home participation fee or over the time the homes in the parcel are sold in the case of the marketing fee. Under the transition requirements for adopting this ASU, we recognized the cumulative amount of such revenue that we would have recognized through December 31, 2017, had we recognized such builder fees under this new accounting method ($6.1 million, or $2.7 million, net of applicable income taxes and noncontrolling interest), as a direct increase in our retained earnings as of January 1, 2018. A portion of such builder fees are expected to be collected more than twelve months from the balance sheet date, and such amounts are classified as a noncurrent asset (Land contract receivables), see Note 7. In addition to recognizing such $6.1 million receivable, we recognized a contract asset of $8.8 million and an offsetting liability for deferred revenue of $8.8 million upon the adoption of this ASU for the estimated amount of such builder fees which we expect to receive from future home sales by the builders, which builder fees are not yet recognizable as revenue (and a portion of such contract asset is also classified as a noncurrent receivable along with an equal amount of noncurrent deferred revenue). Had we recognized revenue in 2018 on the same basis we did in 2017, our land sales revenue would have been lower by $.1 million and higher by $.2 million in the second quarter and first six months of 2018, respectively. On January 1, 2018, we adopted ASU 2016-01, Financial Instruments-Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities, which addresses certain aspects related to the recognition, measurement, presentation and disclosure of financial instruments. The ASU requires equity investments (except for those accounted for under the equity method of accounting or those that result in the consolidation of the investee) to generally be measured at fair value with changes in fair value recognized in net income (previously, changes in fair value of such securities were recognized in other comprehensive income). The amendment also requires a number of other changes, including among others: simplifying the impairment assessment for equity instruments without readily determinable fair values; eliminating the requirement for public business entities to disclose methods and assumptions used to determine fair value for financial instruments measured at amortized cost; requiring an exit price notion when measuring the fair value of financial instruments for disclosure purposes; and requiring separate presentation of financial assets and liabilities by measurement category and form of asset. We adopted the new standard prospectively. The most significant aspect of adopting this ASU is the requirement to recognize changes in fair value of our available-for-sale marketable equity securities in net income. At December 31, 2017, our portfolio of marketable equity securities was not material. In March 2017, the FASB issued ASU 2017-07, Compensation— Retirement Benefits (Topic 715) Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost, which requires that the service cost component of net periodic defined benefit pension and OPEB cost be reported in the same line item as other compensation costs for applicable employees incurred during the period. Other components of such net benefit cost are required to be presented in the income statement separately from the service cost component, and below income from operations (if such a subtotal is presented). These other net benefit cost components must be disclosed either on the face of the financial statements or in the notes to the financial statements. In addition only the service cost component is eligible for capitalization in assets where applicable (inventory or internally constructed fixed assets for example). We adopted the amendments in ASU 2017-06 beginning in the first quarter of 2018, with retrospective presentation in our Condensed Consolidated Statements of Income. We began applying ASU 2017-07 prospectively beginning on January 1, 2018 as it relates to the capitalization of the service cost component of net benefit cost into assets (primarily inventory). We are availing ourselves of the practical expedient that permits us to use amounts we previously disclosed as components of our net periodic defined benefit pension and OPEB cost for periods prior to the adoption of this ASU as the estimation basis for applying the retrospective presentation requirements. As a result we have reclassified $2.6 million and $1.7 million previously classified as part of cost of sales and selling, general and administrative expenses, respectively, for the second quarter 2017 and $5.2 million and $3.2 million for the first six months of 2017, to “Other components of net periodic pension and OPEB cost” in our Condensed Consolidated Statement of Income. See Note 12. Pending Adoption In February 2016, the FASB issued ASU 2016-02, Leases (Topic 842), which is a comprehensive rewriting of the lease accounting guidance which aims to increase comparability and transparency with regard to lease transactions. The primary change will be the recognition of lease assets for the right-of-use of the underlying asset and lease liabilities for the obligation to make payments by lessees on the balance sheet for leases currently classified as operating leases. The ASU also requires increased qualitative disclosure about leases in addition to quantitative disclosures currently required. Companies are currently required to use a modified retrospective approach to adoption with a practical expedient which will allow companies to continue to account for existing leases under the prior guidance unless a lease is modified, other than the requirement to recognize the right-of-use asset and lease liability for all operating leases. The changes indicated above will be effective for us beginning in the first quarter of 2019, with early adoption permitted. We expect to adopt ASU 2016-02 beginning in the first quarter of 2019. We are in the process of assessing all of our current leases. We have not yet evaluated the effect this ASU will have on our Consolidated Financial Statements, but given the material amount of our future minimum payments under non-cancellable operating leases at December 31, 2017 discussed in Note 18 to our 2017 Annual Report, we expect to recognize a material right-of-use lease asset and lease liability upon adoption of the ASU. This ASU permits companies to elect certain practical expedients upon adoption, and at adoption we expect to elect such practical expedients related to, among other things, lease classification (in which existing leases classified as operating leases under current GAAP would be classified as an operating lease under the new ASU, and existing leases classified as a capital lease under current GAAP would be classified as a finance lease under the new ASU), nonlease components (in which nonlease components associated with a lease and paid by us to the lessor, such as property taxes, insurance and maintenance, would be treated as a lease component and considered part of minimum lease rent payments), and short-term leases (in which leases with an original term of 12 months or less would be excluded from the recognition requirements of the new ASU). In addition, in July 2018 FASB issued ASU 2018-11, Leases (Topic 842), which amends the transition guidance in ASU 2016-02 to provide for an additional transition method, under which a company would recognize a cumulative-effect adjustment to the opening balance of retained earnings in the period of adoption, and prior period financial statements would not be restated. We expect to elect this new transition method upon adoption.

Business Segment Information (Tables)

6 Months Ended

Jun. 30, 2018

Segment Reporting [Abstract]

Holding Percentage of Subsidiaries

Business segment	Entity	% controlled at June 30, 2018
Chemicals	Kronos	80	%
Component products	CompX	87	%
Real estate management and development	BMI and LandWell	63% - 77	%

Segment Operating Performance

	Three months ended June 30,						Six months ended June 30,
	2017			2018			2017			2018
	(unaudited)
	(In millions)
Net sales:
Chemicals	$	441.4		$	471.8		$	811.2		$	902.2
Component products		30.1			32.4			60.0			60.8
Real estate management and development		10.3			6.0			15.9			13.2
Total net sales	$	481.8		$	510.2		$	887.1		$	976.2
Cost of sales:
Chemicals	$	309.6		$	300.5		$	573.8		$	556.6
Component products		20.5			21.2			40.8			40.1
Real estate management and development		7.9			4.5			12.1			10.2
Total cost of sales	$	338.0		$	326.2		$	626.7		$	606.9
Gross margin:
Chemicals	$	131.8		$	171.3		$	237.4		$	345.6
Component products		9.6			11.2			19.2			20.7
Real estate management and development		2.4			1.5			3.8			3.0
Total gross margin	$	143.8		$	184.0		$	260.4		$	369.3
Operating income:
Chemicals	$	77.2		$	123.6		$	136.3		$	234.2
Component products		4.6			6.0			9.1			10.4
Real estate management and development		1.3			.4			1.8			4.2
Total operating income		83.1			130.0			147.2			248.8
General corporate items:
Securities earnings		7.1			8.5			14.1			16.8
Insurance recoveries		—			.2			.1			.4
Gain on land sales		—			—			—			12.5
Other components of net periodic pension and OPEB expense		(4.3	)		(3.8	)		(8.4	)		(7.5	)
Litigation settlement expense		—			(62.0	)		—			(62.0	)
General expenses, net		(8.7	)		(14.9	)		(19.2	)		(29.2	)
Interest expense		(14.7	)		(16.0	)		(29.2	)		(31.4	)
Income from continuing operations before income taxes	$	62.5		$	42.0		$	104.6		$	148.4

Business Disposition (Tables)

6 Months Ended

Jun. 30, 2018

Waste Control Specialists

Schedule of Operations of Disposed Waste Management Segment

Selected financial data for the operations of the disposed Waste Management Segment for periods prior to completing the sale is presented below. Current assets at December 31, 2017 consist principally of trade accounts receivable.

	December 31, 2017
	(In millions)
ASSETS
Current assets	$	11.2
Restricted cash		27.2
Property and equipment, net		6.0
Other noncurrent assets		7.6
Total noncurrent assets		40.8
Total assets	$	52.0

LIABILITIES
Current portion of long-term debt	$	3.0
Payable to Contran		36.1
Other current liabilities		8.2
Total current liabilities		47.3

Long-term debt		65.0
Deferred income taxes		(43.8	)
Accrued noncurrent closure and post closure costs		31.7
Total noncurrent liabilities		52.9
Total liabilities	$	100.2

	Three months ended June 30,						Six months ended June 30,
	2017			2018			2017			2018⁽¹⁾
	(In millions)
Net sales	$	20.5		$	—		$	42.0		$	4.6

Operating loss⁽²⁾	$	(171.6	)	$	—			(171.0	)		(.4	)
Termination fee		4.0			—			4.0			—
Other expense, net		(5.8	)		—			(7.7	)		—
Interest expense, net		(1.2	)		—			(2.4	)		(.3	)
Loss before taxes		(174.6	)		—			(177.1	)		(.7	)
Income tax benefit		(66.4	)		—			(67.2	)		(.1	)
Net loss		(108.2	)		—			(109.9	)		(.6	)

Pre-tax gain on disposal		—			—			—			58.4
Income tax expense (benefit)		—			(.4	)		—			19.8
After-tax gain on disposal		—			.4			—			38.6

Total	$	(108.2	)	$	.4		$	(109.9	)	$	38.0

Net cash provided by operating activities							$	8.8		$	2.3

Net cash used in investing activities							$	(2.6	)	$	(.1	)

(1)

Includes results of the Waste Management Segment though January 26, 2018, the date of the sale.

(2)

Operating results in the second quarter and first six months of 2017 includes a $170.6 million long-lived asset impairment.

- Definition

Tabular disclosure of information related to a disposal group. Includes, but is not limited to, a discontinued operation, disposal classified as held-for-sale or disposed of by means other than sale or disposal of an individually significant component.

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+ Details

Accounts and Other Receivables, Net (Tables)

6 Months Ended

Jun. 30, 2018

Receivables [Abstract]

Components of Accounts and Other Receivables

	December 31, 2017			June 30, 2018
	(In millions)
Trade accounts receivable:
Kronos	$	301.4		$	350.8
CompX		10.5			13.8
BMI and LandWell		1.6			1.9
VAT and other receivables		20.7			26.6
Insurance recovery receivable – NL		—			15.0
Refundable income taxes		.5			.7
Receivable from affiliates:
Contran – trade items		1.0			.9
Contran – income taxes		19.4			—
LPC – trade items		8.9			—
Other – trade items		3.3			3.3
Allowance for doubtful accounts		(1.5	)		(1.4	)
Total	$	365.8		$	411.6

Inventories, Net (Tables)

6 Months Ended

Jun. 30, 2018

Inventory Disclosure [Abstract]

Inventories, Net

	December 31, 2017		June 30, 2018
	(In millions)
Raw materials:
Chemicals	$	106.9	$	89.3
Component products		2.7		2.7
Total raw materials		109.6		92.0
Work in process:
Chemicals		20.8		33.1
Component products		9.8		10.6
Total in-process products		30.6		43.7
Finished products:
Chemicals		192.2		226.4
Component products		2.8		3.3
Total finished products		195.0		229.7
Supplies (chemicals)		63.2		64.0
Total	$	398.4	$	429.4

Marketable Securities (Tables)

6 Months Ended

Jun. 30, 2018

Investments Debt And Equity Securities [Abstract]

Schedule of Marketable Securities

	Market value		Cost basis		Unrealized losses, net
	(In millions)
December 31, 2017:
Current assets	$	3.0		3.0		—
Noncurrent assets:
The Amalgamated Sugar Company LLC	$	250.0		250.0		—
Other		5.7		5.9		(.2	)
Total	$	255.7		255.9		(.2	)
June 30, 2018:
Current assets	$	1.6		1.6		—
Noncurrent assets:
The Amalgamated Sugar Company LLC	$	250.0	$	250.0	$	—
Other		6.8		7.1		(.3	)
Total	$	256.8	$	257.1	$	(.3	)

Other Noncurrent Assets (Tables)

6 Months Ended

Jun. 30, 2018

Deferred Costs Capitalized Prepaid And Other Assets Disclosure [Abstract]

Other Noncurrent Assets

	December 31, 2017		June 30, 2018
	(In millions)
Other noncurrent assets:
Land held for development	$	126.6	$	123.1
Restricted cash		9.9		9.0
Land contract receivables		—		7.3
IBNR receivables		6.8		6.9
Pension asset		4.2		6.0
Notes receivable - OPA		—		2.6
Other		26.6		20.6
Total	$	174.1	$	175.5

Long-Term Debt (Tables)

6 Months Ended

Jun. 30, 2018

Debt Disclosure [Abstract]

Long-Term Debt

	December 31, 2017		June 30, 2018
	(In millions)
Valhi:
Snake River Sugar Company	$	250.0	$	250.0
Contran credit facility		284.3		320.6
Total Valhi debt		534.3		570.6
Subsidiary debt:
Kronos:
Senior Secured Notes		471.1		458.6
Tremont:
Promissory note payable		13.1		10.9
BMI:
Bank loan – Western Alliance Bank		18.8		18.0
LandWell:
Note payable to the City of Henderson		2.5		2.3
Other		3.3		2.9
Total subsidiary debt		508.8		492.7
Total debt		1,043.1		1,063.3
Less current maturities		1.6		1.6
Total long-term debt	$	1,041.5	$	1,061.7

- Definition

Tabular disclosure of long-debt instruments or arrangements, including identification, terms, features, collateral requirements and other information necessary to a fair presentation. These are debt arrangements that originally required repayment more than twelve months after issuance or greater than the normal operating cycle of the entity, if longer.

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+ Details

Accounts Payable and Accrued Liabilities (Tables)

6 Months Ended

Jun. 30, 2018

Payables And Accruals [Abstract]

Schedule of Accounts Payable and Accrued Liabilities

	December 31, 2017		June 30, 2018
	(In millions)
Accounts payable:
Kronos	$	107.9	$	120.6
CompX		2.3		3.0
BMI and LandWell		3.7		2.8
NL		1.8		.7
Other		.4		.4
Payable to affiliates:
Contran – taxes		—		2.7
LPC – trade items		16.2		12.5
Litigation settlement		—		60.0
Employee benefits		36.3		28.0
Deferred income		28.3		22.8
Accrued sales discounts and rebates		14.3		19.2
Environmental remediation and related costs		6.8		19.6
Interest		5.5		5.4
Other		33.6		39.4
Total	$	257.1	$	337.1

The litigation settlement accrual is discussed in Note 17.

Other Noncurrent Liabilities (Tables)

6 Months Ended

Jun. 30, 2018

Other Liabilities Disclosure [Abstract]

Other Noncurrent Liabilities

	December 31, 2017		June 30, 2018
	(In millions)
Reserve for uncertain tax positions	$	16.5	$	17.2
Litigation settlement		—		17.0
Deferred income		15.7		15.9
Employee benefits		8.4		8.2
Insurance claims and expenses		9.1		9.6
Deferred payment obligation		9.3		9.4
Accrued development costs		6.1		7.9
Other		8.5		8.9
Total	$	73.6	$	94.1

Revenue Recognition (Tables)

6 Months Ended

Jun. 30, 2018

Revenue From Contract With Customer [Abstract]

Schedule of Disaggregates of Net Sales

The following table disaggregates the net sales of our Chemicals Segment by place of manufacture (point of origin) and the location of the customer (point of destination), which are the categories that depict how the nature, amount timing and uncertainty of revenue and cash flows are affected by economic factors (as required by ASC 606).

	Three months ended June 30,						Six months ended June 30,
	2017			2018			2017			2018
	(In millions)
Net sales – point of origin::
Germany	$	231.9		$	257.7		$	415.5		$	492.2
United States		208.6			208.9			414.3			405.7
Canada		79.9			82.2			157.8			153.8
Belgium		72.0			68.9			130.1			138.6
Norway		51.3			56.5			98.6			109.6
Eliminations		(202.3	)		(202.4	)		(405.1	)		(397.7	)
Total	$	441.4		$	471.8		$	811.2		$	902.2

Net sales – point of destination:
Europe	$	226.6		$	238.5		$	406.3		$	472.4
North America		138.1			143.6			262.1			270.6
Other		76.7			89.7			142.8			159.2
Total	$	441.4		$	471.8		$	811.2		$	902.2

The following table disaggregates the net sales of our Component Products and Real Estate Management and Development Segments by major product line.

	Three months ended June 30,				Six months ended June 30,
	2017		2018		2017		2018
	(In millions)
Component Products:
Net sales:
Security products	$	26.1	$	27.2	$	52.1	$	51.3
Marine components		4.0		5.2		7.9		9.5
Total	$	30.1	$	32.4		60.0		60.8
Real Estate Management and Development:
Net sales:
Land sales	$	8.4	$	3.8		12.1		9.6
Water delivery		1.4		1.9		2.7		2.8
Utility and other		.5		.3		1.1		.8
Total	$	10.3	$	6.0	$	15.9	$	13.2

Employee Benefit Plans (Tables)

6 Months Ended

Jun. 30, 2018

Defined Benefit Pension Plans

Components of Net Periodic Defined Benefit Cost

The components of our net periodic defined benefit pension cost are presented in the table below.

	Three months ended June 30,						Six months ended June 30,
	2017			2018			2017			2018
	(In millions)
Service cost	$	2.8		$	2.9		$	5.5		$	5.9
Interest cost		3.9			4.0			7.7			8.0
Expected return on plan assets		(3.2	)		(3.8	)		(6.4	)		(7.8	)
Amortization of unrecognized prior service cost		.1			—			.2			.1
Recognized actuarial losses		3.7			3.9			7.3			7.7
Total	$	7.3		$	7.0		$	14.3		$	13.9

OPEB

Components of Net Periodic Defined Benefit Cost

The components of our net periodic other postretirement benefit cost are presented in the table below.

	Three months ended June 30,						Six months ended June 30,
	2017			2018			2017			2018
	(In millions)
Service cost	$	.1		$	.1		$	.1		$	.1
Interest cost		.1			—			.2			.1
Amortization of prior service credit		(.3	)		(.2	)		(.5	)		(.5	)
Recognized actuarial gains		—			(.1	)		(.1	)		(.1	)
Total	$	(.1	)	$	(.2	)	$	(.3	)	$	(.4	)

Other Income, Net (Tables)

6 Months Ended

Jun. 30, 2018

Other Income And Expenses [Abstract]

Schedule of Components of Other Income

	Six months ended June 30,
	2017			2018
	(In millions)
Securities earnings:
Dividends and interest	$	14.1		$	16.8
Currency transactions, net		(3.7	)		4.8
Insurance recoveries		.1			.4
Infrastructure reimbursement		.2			4.0
Gain on land sales		—			12.5
Other, net		.7			1.2
Total	$	11.4		$	39.7

Income Taxes (Tables)

6 Months Ended

Jun. 30, 2018

Income Tax Disclosure [Abstract]

Component of Income Taxes Expenses

	Three months ended June 30,						Six months ended June 30,
	2017			2018			2017			2018
	(In millions)
Expected tax expense, at U.S. federal statutory income tax rate of 35% in 2017 and 21% in 2018	$	21.9		$	8.8		$	36.6		$	31.2
Incremental net tax on earnings and losses of non-U.S., U.S. and non-tax group companies		37.1			4.9			48.3			9.0
Non-U.S. tax rates		(2.3	)		7.9			(4.7	)		14.9
Valuation allowance		(157.6	)		1.7			(162.6	)		2.0
Adjustment to the reserve for uncertain tax positions, net		.6			.3			1.1			1.9
Canada – Germany APA		—			—			—			(1.4	)
Nondeductible expenses		.3			.3			.7			.7
Domestic production activities deduction		(1.5	)		—			(2.1	)		—
U.S. state income taxes and other, net		.7			(1.9	)		.6			(.1	)
Income tax expense (benefit)	$	(100.8	)	$	22.0		$	(82.2	)	$	58.2

Comprehensive provision for income taxes (benefit) allocable to:
Income from continuing operations	$	(100.8	)	$	22.0		$	(82.2	)	$	58.2
Discontinued operations		(66.4	)		(.4	)		(67.2	)		19.8
Retained earnings – change in accounting principle		—			—			—			1.1
Other comprehensive income (loss):
Currency translation		16.3			(3.3	)		18.1			(1.9	)
Pension plans		2.2			1.5			3.1			3.0
OPEB plans		(.1	)		(.1	)		(.2	)		(.2	)
Marketable securities		(.4	)		—			(.5	)		—
Interest rate swap		(.3	)		—			.1			—
Total	$	(149.5	)	$	19.7		$	(128.8	)	$	80.0

Noncontrolling Interest in Subsidiaries (Tables)

6 Months Ended

Jun. 30, 2018

Noncontrolling Interest [Abstract]

Noncontrolling Interest in Net Assets of Subsidiaries

	December 31, 2017		June 30, 2018
	(In millions)
Noncontrolling interest in net assets:
Kronos Worldwide	$	204.9	$	224.2
NL Industries		71.1		66.0
CompX International		17.8		18.7
BMI		26.0		27.6
LandWell		22.5		25.2
Total	$	342.3	$	361.7

Schedule of Noncontrolling Interest in Net Income of Subsidiaries

	Six months ended June 30,
	2017		2018
	(In millions)
Noncontrolling interest in net income (loss) of subsidiaries:
Kronos Worldwide	$	45.6	$	29.0
NL Industries		8.4		(4.8	)
CompX International		.9		1.1
BMI		.2		.7
LandWell		.3		1.2
Total	$	55.4	$	27.2

Accumulated Other Comprehensive Loss (Tables)

6 Months Ended

Jun. 30, 2018

Equity [Abstract]

Accumulated Other Comprehensive Income (Loss)

Changes in accumulated other comprehensive income (loss) attributable to Valhi stockholders for the three and six months ended June 30, 2017 and 2018 are presented in the table below.

	Three months ended June 30,						Six months ended June 30,
	2017			2018			2017			2018
	(In millions)
Accumulated other comprehensive income (loss), net of tax and noncontrolling interest:
Marketable securities:
Balance at beginning of period	$	1.7		$	1.6		$	1.7		$	1.7
Other comprehensive loss – unrealized losses arising during the period		—			—			—			(.1	)
Balance at end of period	$	1.7		$	1.6		$	1.7		$	1.6
Interest rate swap:
Balance at beginning of period	$	(.8	)	$	—		$	(1.2	)	$	—
Other comprehensive income (loss):
Unrealized losses arising during the year		(.5	)		—			(.5	)		—
Less reclassification adjustment for amounts included in interest expense		.2			—			.6			—
Balance at end of period	$	(1.1	)	$	—		$	(1.1	)	$	—
Currency translation adjustment:
Balance at beginning of period	$	(83.1	)	$	(46.9	)	$	(88.5	)	$	(54.1	)
Other comprehensive income (loss)		9.3			(16.7	)		14.7			(9.5	)
Balance at end of period	$	(73.8	)	$	(63.6	)	$	(73.8	)	$	(63.6	)
Defined benefit pension plans:
Balance at beginning of period	$	(135.0	)	$	(127.1	)	$	(137.0	)	$	(129.0	)
Other comprehensive income— amortization of prior service cost and net losses included in net periodic pension cost		.6			1.9			2.6			3.8
Balance at end of period	$	(134.4	)	$	(125.2	)	$	(134.4	)	$	(125.2	)
OPEB plans:
Balance at beginning of period	$	2.9		$	2.2		$	3.1		$	2.4
Other comprehensive loss – amortization of prior service credit		(.2	)		(.2	)		(.4	)		(.4	)
Balance at end of period	$	2.7		$	2.0		$	2.7		$	2.0
Total accumulated other comprehensive income (loss):
Balance at beginning of period	$	(214.3	)	$	(170.2	)	$	(221.9	)	$	(179.0	)
Other comprehensive income (loss)		9.4			(15.0	)		17.0			(6.2	)
Balance at end of period	$	(204.9	)	$	(185.2	)	$	(204.9	)	$	(185.2	)

Commitments and Contingencies (Tables)

6 Months Ended

Jun. 30, 2018

Commitments And Contingencies Disclosure [Abstract]

Change in Accrued Environmental Remediation and Related Costs

The table below presents a summary of the activity in our accrued environmental costs during the first six months of 2018.

	Amount
	(In millions)
Balance at the beginning of the year	$	117.5
Additions charged to expense, net		4.5
Payments, net		(1.1	)
Balance at the end of period	$	120.9
Amounts recognized in our Condensed Consolidated Balance Sheet at the end of the period:
Current liabilities	$	19.6
Noncurrent liabilities		101.3
Total	$	120.9

Fair Value Measurements and Financial Instruments (Tables)

6 Months Ended

Jun. 30, 2018

Fair Value Disclosures [Abstract]

Marketable Securities and Financial Instruments on Fair Value Basis

The following table summarizes the valuation of our marketable securities, financial instruments and other items recorded on a fair value basis as of:

	Fair Value Measurements
	Total		Quoted Prices in Active Markets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
	(In millions)
Asset
December 31, 2017:
Marketable securities:
Current	$	3.0	$	—	$	3.0	$	—
Noncurrent		255.7		1.3		4.4		250.0
June 30, 2018:
Marketable securities:
Current	$	1.6	$	—	$	1.6	$	—
Noncurrent		256.8		3.8		3.0		250.0

Financial Instruments not Carried at Fair Value

The following table presents the financial instruments that are not carried at fair value but which require fair value disclosure:

	December 31, 2017				June 30, 2018
	Carrying amount		Fair value		Carrying amount		Fair value
	(In millions)
Cash, cash equivalents and restricted cash equivalents	$	461.7	$	461.7	$	577.9	$	577.9
Deferred payment obligation		9.3		9.3		9.4		9.4
Long-term debt (excluding capitalized leases):
Kronos Senior Notes		471.1		495.1		458.6		449.3
Snake River Sugar Company fixed rate loans		250.0		250.0		250.0		250.0
Valhi credit facility with Contran		284.3		284.3		320.6		320.6
Tremont promissory note payable		13.1		13.1		10.9		10.9
BMI bank note payable		18.8		19.7		18.0		18.9
LandWell note payable to the City of Henderson		2.5		2.5		2.3		2.3

- Definition

Tabular disclosure of financial instruments measured at fair value, including those classified in shareholders' equity measured on a recurring or nonrecurring basis. Disclosures include, but are not limited to, fair value measurements recorded and the reasons for the measurements, level within the fair value hierarchy in which the fair value measurements are categorized and transfers between levels 1 and 2. Nonrecurring fair value measurements are those that are required or permitted in the statement of financial position in particular circumstances.

+ References + Details

Organization and Basis of Presentation - Additional Information (Detail)	Jun. 30, 2018
Contran
Basis Of Presentation And Significant Accounting Policies [Line Items]
Parent company ownership interest	92.00%

Business Segment Information - Holding Percentage of Subsidiaries (Detail)	Jun. 30, 2018
Kronos Worldwide, Inc.
Segment Reporting Information [Line Items]
Parent company ownership interest	50.00%
BMI
Segment Reporting Information [Line Items]
Parent company ownership interest	63.00%
LandWell
Segment Reporting Information [Line Items]
Parent company ownership interest	27.00%
Chemicals \| Kronos Worldwide, Inc.
Segment Reporting Information [Line Items]
Controlling interest in subsidiary	80.00%
Component Products \| CompX
Segment Reporting Information [Line Items]
Parent company ownership interest	87.00%
Real Estate Management And Development \| BMI
Segment Reporting Information [Line Items]
Parent company ownership interest	63.00%
Real Estate Management And Development \| LandWell \| Aggregate General And Limited Interests
Segment Reporting Information [Line Items]
Controlling interest in subsidiary	77.00%

Business Segment Information - Additional Information (Detail)	Jun. 30, 2018
Kronos Worldwide, Inc.
Segment Reporting Information [Line Items]
Direct ownership percentage by parent	50.00%
Indirect controlling interest in subsidiary	30.00%
NL
Segment Reporting Information [Line Items]
Direct ownership percentage by parent	83.00%
LandWell
Segment Reporting Information [Line Items]
Direct ownership percentage by parent	27.00%
Indirect controlling interest in subsidiary	50.00%
BMI
Segment Reporting Information [Line Items]
Direct ownership percentage by parent	63.00%

Business Segment Information - Segment Operating Performance (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Segment Reporting Information [Line Items]
Net sales	$ 510.2	$ 481.8	$ 976.2	$ 887.1
Cost of sales	326.2	338.0	606.9	626.7
Gross margin	184.0	143.8	369.3	260.4
Operating income (loss)	130.0	83.1	248.8	147.2
Securities earnings	8.5	7.1	16.8	14.1
Insurance recoveries	0.2		0.4	0.1
Gain on land sales			12.5
Other components of net periodic pension and OPEB expense	(3.8)	(4.3)	(7.5)	(8.4)
Litigation settlement expense	(62.0)		(62.0)
General expenses, net	(14.9)	(8.7)	(29.2)	(19.2)
Interest expense	(16.0)	(14.7)	(31.4)	(29.2)
Income from continuing operations before income taxes	42.0	62.5	148.4	104.6
Chemicals
Segment Reporting Information [Line Items]
Net sales	471.8	441.4	902.2	811.2
Cost of sales	300.5	309.6	556.6	573.8
Gross margin	171.3	131.8	345.6	237.4
Operating income (loss)	123.6	77.2	234.2	136.3
Component Products
Segment Reporting Information [Line Items]
Net sales	32.4	30.1	60.8	60.0
Cost of sales	21.2	20.5	40.1	40.8
Gross margin	11.2	9.6	20.7	19.2
Operating income (loss)	6.0	4.6	10.4	9.1
Real Estate Management And Development
Segment Reporting Information [Line Items]
Net sales	6.0	10.3	13.2	15.9
Cost of sales	4.5	7.9	10.2	12.1
Gross margin	1.5	2.4	3.0	3.8
Operating income (loss)	$ 0.4	$ 1.3	$ 4.2	$ 1.8

Business Disposition - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended			6 Months Ended
	Jun. 30, 2018	Mar. 31, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017	Jan. 26, 2018
Business Combinations Discontinued Operations And Related Transactions [Line Items]
Impairment of long lived assets held for use					$ 170.6
WCS \| Contran Credit Facility \| Contran \| Amounts Acquired in Business Divestiture
Business Combinations Discontinued Operations And Related Transactions [Line Items]
Acquired trade receivable	$ 36.3			$ 36.3		$ 36.3
Waste Management
Business Combinations Discontinued Operations And Related Transactions [Line Items]
Pre-tax gain from disposal of discontinued operations				58.4
Gain from disposal of discontinued operations, net of tax	0.4			38.6
Impairment of long lived assets held for use			$ 170.6		$ 170.6
Waste Management \| Contran Credit Facility
Business Combinations Discontinued Operations And Related Transactions [Line Items]
Noncash borrowings	$ 36.3			$ 36.3		$ 36.3
Waste Management \| Discontinued Operations
Business Combinations Discontinued Operations And Related Transactions [Line Items]
Pre-tax gain from disposal of discontinued operations		$ 58.0
Gain from disposal of discontinued operations, net of tax		$ 38.6
Gain on disposal of discontinued operations, per diluted share, net of tax		$ 0.11

Business Disposition - Schedule of Consolidated Balance Sheets (Detail) $ in Millions	Dec. 31, 2017 USD ($)
ASSETS
Current assets	$ 11.2
Other noncurrent assets	40.8
LIABILITIES
Total current liabilities	47.3
Total noncurrent liabilities	52.9
Waste Management
ASSETS
Current assets	11.2
Restricted cash	27.2
Property and equipment, net	6.0
Other noncurrent assets	7.6
Total noncurrent assets	40.8
Total assets	52.0
LIABILITIES
Current portion of long-term debt	3.0
Other current liabilities	8.2
Total current liabilities	47.3
Long-term debt	65.0
Deferred income taxes	(43.8)
Accrued noncurrent closure and post closure costs	31.7
Total noncurrent liabilities	52.9
Total liabilities	100.2
Waste Management \| Contran \| Trade Accounts Payables
LIABILITIES
Payable to affiliates	$ 36.1

Business Disposition - Schedule of Consolidated Statements of Operations (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Total	$ 0.4	$ (108.2)	$ 38.0	$ (109.9)
Waste Management
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Net sales		20.5	4.6	42.0
Operating loss		(171.6)	(0.4)	(171.0)
Termination fee		4.0		4.0
Other expense, net		(5.8)		(7.7)
Interest expense, net		(1.2)	(0.3)	(2.4)
Loss before taxes		(174.6)	(0.7)	(177.1)
Income tax benefit		(66.4)	(0.1)	(67.2)
Net loss		(108.2)	(0.6)	(109.9)
Pre-tax gain on disposal			58.4
Income tax expense (benefit)	(0.4)		19.8
After-tax gain on disposal	0.4		38.6
Total	$ 0.4	$ (108.2)	38.0	(109.9)
Net cash provided by operating activities			2.3	8.8
Net cash used in investing activities			$ (0.1)	$ (2.6)

Business Disposition - Schedule of Consolidated Statements of Operations (Parenthetical) (Detail) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2017
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Impairment of long lived assets held for use		$ 170.6
Waste Management
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Impairment of long lived assets held for use	$ 170.6	$ 170.6

Accounts and Other Receivables, Net - Components of Accounts and Other Receivables (Detail) - USD ($) $ in Millions	Jun. 30, 2018	Dec. 31, 2017
Trade accounts receivable:
VAT and other receivables	$ 26.6	$ 20.7
Insurance recovery receivable	15.0
Refundable income taxes	0.7	0.5
Allowance for doubtful accounts	(1.4)	(1.5)
Total	411.6	365.8
NL
Trade accounts receivable:
Insurance recovery receivable	15.0
Trade Accounts Receivable \| Kronos Worldwide, Inc.
Trade accounts receivable:
Accounts receivable	350.8	301.4
Trade Accounts Receivable \| CompX
Trade accounts receivable:
Accounts receivable	13.8	10.5
Trade Accounts Receivable \| BMI and LandWell
Trade accounts receivable:
Accounts receivable	1.9	1.6
Contran \| Trade Items
Trade accounts receivable:
Receivable from affiliates	0.9	1.0
Contran \| Income Taxes
Trade accounts receivable:
Receivable from affiliates		19.4
LPC \| Trade Items
Trade accounts receivable:
Receivable from affiliates		8.9
Other \| Trade Items
Trade accounts receivable:
Receivable from affiliates	$ 3.3	$ 3.3

Inventories, Net - Inventories, Net (Detail) - USD ($) $ in Millions	Jun. 30, 2018	Dec. 31, 2017
Inventory [Line Items]
Raw materials	$ 92.0	$ 109.6
Work in process	43.7	30.6
Finished products	229.7	195.0
Supplies (chemicals)	64.0	63.2
Total	429.4	398.4
Chemicals
Inventory [Line Items]
Raw materials	89.3	106.9
Work in process	33.1	20.8
Finished products	226.4	192.2
Component Products
Inventory [Line Items]
Raw materials	2.7	2.7
Work in process	10.6	9.8
Finished products	$ 3.3	$ 2.8

Marketable Securities - Schedule of Marketable Securities (Detail) - USD ($) $ in Millions	Jun. 30, 2018	Dec. 31, 2017
Schedule Of Available For Sale Securities [Line Items]
Market value, available for sale securities, current	$ 1.6	$ 3.0
Market value, available for sale securities, noncurrent	256.8	255.7
Non Current Assets
Schedule Of Available For Sale Securities [Line Items]
Cost basis	257.1	255.9
Unrealized losses, net	(0.3)	(0.2)
Current Assets
Schedule Of Available For Sale Securities [Line Items]
Cost basis	1.6	3.0
Unrealized losses, net	0.0	0.0
Other \| Non Current Assets
Schedule Of Available For Sale Securities [Line Items]
Market value, available for sale securities, noncurrent	6.8	5.7
Cost basis	7.1	5.9
Unrealized losses, net	(0.3)	(0.2)
Amalgamated Sugar Company LLC
Schedule Of Available For Sale Securities [Line Items]
Market value, available for sale securities, noncurrent	250.0
Amalgamated Sugar Company LLC \| Non Current Assets
Schedule Of Available For Sale Securities [Line Items]
Market value, available for sale securities, noncurrent	250.0	250.0
Cost basis	250.0	250.0
Unrealized losses, net	$ 0.0	$ 0.0

Marketable Securities - Additional Information (Detail) - USD ($) $ in Millions	Jun. 30, 2018	May 30, 2018	Dec. 31, 2017
Schedule Of Available For Sale Securities [Line Items]
Noncurrent liability	$ 1,061.7		$ 1,041.5
Snake River
Schedule Of Available For Sale Securities [Line Items]
Cash consideration receivable upon sale of interest in subsidiary		$ 12.5
Divestiture of interest in subsidiary deemed payment of loans in full as part of consideration		$ 250.0
Noncurrent liability	$ 250.0

Other Noncurrent Assets - Other Noncurrent Assets (Detail) - USD ($) $ in Millions	Jun. 30, 2018	Dec. 31, 2017
Other noncurrent assets:
Land held for development	$ 123.1	$ 126.6
Restricted cash	9.0	9.9
Land contract receivables	7.3
IBNR receivables	6.9	6.8
Pension asset	6.0	4.2
Notes receivable - OPA	2.6
Other	20.6	26.6
Total	$ 175.5	$ 174.1

Other Noncurrent Assets - Additional Information (Detail) - USD ($)	3 Months Ended	12 Months Ended
	Mar. 31, 2018	Dec. 31, 2017	Jun. 30, 2018
Other Assets Non Current [Line Items]
Notes receivable			$ 2,600,000
City Of Henderson
Other Assets Non Current [Line Items]
Notes receivable	$ 3,100,000
Annual interest rate	6.00%
City Of Henderson \| Notes Payable
Other Assets Non Current [Line Items]
Debt instrument expiry year	2036
OPA \| City of Henderson Redevelopment Agency
Other Assets Non Current [Line Items]
Tax increment reimbursement percentage		75.00%
Aggregate amount of tax increment reimbursement receipts		$ 3,100,000
OPA \| Maximum \| City of Henderson Redevelopment Agency
Other Assets Non Current [Line Items]
Reimbursement revenue		$ 209,000,000

Long-Term Debt - Long-Term Debt (Detail) - USD ($) $ in Millions	Jun. 30, 2018	Dec. 31, 2017
Long-term debt
Total debt	$ 1,063.3	$ 1,043.1
Less current maturities	1.6	1.6
Total long-term debt	1,061.7	1,041.5
VALHI, INC.
Long-term debt
Total debt	570.6	534.3
VALHI, INC. \| Contran Credit Facility
Long-term debt
Total debt	320.6	284.3
VALHI, INC. \| Notes Payable, Other Payables \| Snake River
Long-term debt
Total debt	250.0	250.0
Kronos Worldwide, Inc. \| 3.75% Senior Secured Notes due September 15, 2025 \| Kronos International, Inc
Long-term debt
Total debt	458.6	471.1
Tremont \| Promissory Note
Long-term debt
Total debt	10.9	13.1
BMI \| Bank loan \| Western Alliance Bank
Long-term debt
Total debt	18.0	18.8
LandWell \| Unsecured Debt
Long-term debt
Total debt	2.3	2.5
Other Subsidiary \| Other
Long-term debt
Total debt	2.9	3.3
Subsidiary
Long-term debt
Total debt	$ 492.7	$ 508.8

Long-Term Debt - Valhi Contran Credit Facility - Additional Information (Detail) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2018	Jan. 26, 2018	Dec. 31, 2017
Debt Instrument [Line Items]
Total long-term debt	$ 1,061.7		$ 1,041.5
Snake River
Debt Instrument [Line Items]
Total long-term debt	250.0
Contran Credit Facility \| Waste Management
Debt Instrument [Line Items]
Noncash borrowings	$ 36.3	$ 36.3
VALHI, INC. \| Contran Credit Facility
Debt Instrument [Line Items]
Debt instrument, Interest rate at period end	6.00%
Debt instrument, average interest rate during period	5.62%
Amount available for borrowing	$ 39.4
WCS \| Contran Credit Facility \| Contran \| Amounts Acquired in Business Divestiture
Debt Instrument [Line Items]
Acquired trade receivable	$ 36.3	$ 36.3

Long-Term Debt - Kronos Senior Secured Notes - Additional Information (Detail) - Kronos Worldwide, Inc. - 3.75% Senior Secured Notes due September 15, 2025 - Kronos International, Inc $ in Millions	6 Months Ended
	Jun. 30, 2018 USD ($)	Jun. 30, 2018 EUR (€)
Debt Instrument [Line Items]
Debt instrument interest rate	3.75%	3.75%
Debt instrument maturity date	Sep. 15, 2025
Debt instrument principal amount \| €		€ 400,000,000
Unamortized debt issuance costs \| $	$ 6.8

Long-Term Debt - Revolving Credit Facility - Additional Information (Detail) - 6 months ended Jun. 30, 2018 - Kronos Worldwide, Inc. € in Millions, $ in Millions	USD ($)	EUR (€)
European Revolving Credit Facility
Line Of Credit Facility [Line Items]
Amount available for borrowing	$ 104.7	€ 90.0
Revolving credit facility, borrowings	0.0
Repayment of credit facility	0.0
North American Revolving Credit Facility
Line Of Credit Facility [Line Items]
Amount available for borrowing	118.1
Revolving North American Credit Facility
Line Of Credit Facility [Line Items]
Revolving credit facility, borrowings	0.0
Repayment of credit facility	$ 0.0

Long-Term Debt - Tremont Promissory Note Payable - Additional Information (Detail) - USD ($) $ in Millions	1 Months Ended	3 Months Ended
	Jan. 31, 2018	Mar. 31, 2018
Promissory Note \| Tremont
Debt Instrument [Line Items]
Principal prepayments of note	$ 2.2	$ 2.2

Accounts Payable and Accrued Liabilities - Schedule of Accounts Payable and Accrued Liabilities (Detail) - USD ($) $ in Millions	Jun. 30, 2018	Dec. 31, 2017
Payable to affiliates:
Litigation settlement	$ 60.0
Employee benefits	28.0	$ 36.3
Deferred income	22.8	28.3
Accrued sales discounts and rebates	19.2	14.3
Environmental remediation and related costs	19.6	6.8
Interest	5.4	5.5
Other	39.4	33.6
Total	337.1	257.1
Kronos Worldwide, Inc.
Accounts payable:
Accounts payable	120.6	107.9
CompX
Accounts payable:
Accounts payable	3.0	2.3
BMI and LandWell
Accounts payable:
Accounts payable	2.8	3.7
NL
Accounts payable:
Accounts payable	0.7	1.8
Other
Accounts payable:
Accounts payable	0.4	0.4
Contran \| Income Taxes Payable
Payable to affiliates:
Payable to affiliates	2.7
LPC \| Trade Accounts Payables
Payable to affiliates:
Payable to affiliates	$ 12.5	$ 16.2

Other Noncurrent Liabilities - Other Noncurrent Liabilities (Detail) - USD ($) $ in Millions	Jun. 30, 2018	Dec. 31, 2017
Other Liabilities Disclosure [Abstract]
Reserve for uncertain tax positions	$ 17.2	$ 16.5
Litigation settlement	17.0
Deferred income	15.9	15.7
Employee benefits	8.2	8.4
Insurance claims and expenses	9.6	9.1
Deferred payment obligation	9.4	9.3
Accrued development costs	7.9	6.1
Other	8.9	8.5
Total	$ 94.1	$ 73.6

Revenue Recognition - Additional Information (Detail)	6 Months Ended
Revenue Recognition - Additional Information (Detail)	Jun. 30, 2018 a
Disaggregation Of Revenue [Line Items]
Standard payment terms	less than one year
Residential/Planned Community
Disaggregation Of Revenue [Line Items]
Area of real estate property	2,100
Percentage of variable consideration	1.00%
Commercial and Light Industrial Use
Disaggregation Of Revenue [Line Items]
Area of real estate property	400
Residential Housing Unit
Disaggregation Of Revenue [Line Items]
Percentage of sales price	3.50%
Maximum
Disaggregation Of Revenue [Line Items]
Revenue recognition period	1 year

Revenue Recognition - Schedule of Disaggregates of Net Sales of our Chemicals Segment (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Disaggregation Of Revenue [Line Items]
Net sales	$ 510.2	$ 481.8	$ 976.2	$ 887.1
Chemicals
Disaggregation Of Revenue [Line Items]
Net sales	471.8	441.4	902.2	811.2
Point of Origin \| Chemicals
Disaggregation Of Revenue [Line Items]
Net sales	471.8	441.4	902.2	811.2
Point of Origin \| Chemicals \| Germany
Disaggregation Of Revenue [Line Items]
Net sales	257.7	231.9	492.2	415.5
Point of Origin \| Chemicals \| United States
Disaggregation Of Revenue [Line Items]
Net sales	208.9	208.6	405.7	414.3
Point of Origin \| Chemicals \| Canada
Disaggregation Of Revenue [Line Items]
Net sales	82.2	79.9	153.8	157.8
Point of Origin \| Chemicals \| Belgium
Disaggregation Of Revenue [Line Items]
Net sales	68.9	72.0	138.6	130.1
Point of Origin \| Chemicals \| Norway
Disaggregation Of Revenue [Line Items]
Net sales	56.5	51.3	109.6	98.6
Point of Origin \| Chemicals \| Eliminations
Disaggregation Of Revenue [Line Items]
Net sales	(202.4)	(202.3)	(397.7)	(405.1)
Point of Destination \| Chemicals
Disaggregation Of Revenue [Line Items]
Net sales	471.8	441.4	902.2	811.2
Point of Destination \| Chemicals \| Europe
Disaggregation Of Revenue [Line Items]
Net sales	238.5	226.6	472.4	406.3
Point of Destination \| Chemicals \| North America
Disaggregation Of Revenue [Line Items]
Net sales	143.6	138.1	270.6	262.1
Point of Destination \| Chemicals \| Other
Disaggregation Of Revenue [Line Items]
Net sales	$ 89.7	$ 76.7	$ 159.2	$ 142.8

Revenue Recognition - Schedule of Disaggregates of Net Sales of our Component Products and Real Estate Management and Development Segments (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Disaggregation Of Revenue [Line Items]
Net sales	$ 510.2	$ 481.8	$ 976.2	$ 887.1
Component Products
Disaggregation Of Revenue [Line Items]
Net sales	32.4	30.1	60.8	60.0
Component Products \| Security Products
Disaggregation Of Revenue [Line Items]
Net sales	27.2	26.1	51.3	52.1
Component Products \| Marine Components
Disaggregation Of Revenue [Line Items]
Net sales	5.2	4.0	9.5	7.9
Real Estate Management And Development
Disaggregation Of Revenue [Line Items]
Net sales	6.0	10.3	13.2	15.9
Real Estate Management And Development \| Land Sales
Disaggregation Of Revenue [Line Items]
Net sales	3.8	8.4	9.6	12.1
Real Estate Management And Development \| Water Delivery
Disaggregation Of Revenue [Line Items]
Net sales	1.9	1.4	2.8	2.7
Real Estate Management And Development \| Utility and Other
Disaggregation Of Revenue [Line Items]
Net sales	$ 0.3	$ 0.5	$ 0.8	$ 1.1

Employee Benefit Plans - Components of Net Periodic Defined Benefit Pension Benefit Cost (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Defined Benefit Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 2.9	$ 2.8	$ 5.9	$ 5.5
Interest cost	4.0	3.9	8.0	7.7
Expected return on plan assets	(3.8)	(3.2)	(7.8)	(6.4)
Amortization of unrecognized prior service cost		0.1	0.1	0.2
Recognized actuarial losses	3.9	3.7	7.7	7.3
Total	7.0	7.3	13.9	14.3
OPEB
Defined Benefit Plan Disclosure [Line Items]
Service cost	0.1	0.1	0.1	0.1
Interest cost		0.1	0.1	0.2
Amortization of unrecognized prior service cost	(0.2)	(0.3)	(0.5)	(0.5)
Recognized actuarial losses	(0.1)		(0.1)	(0.1)
Total	$ (0.2)	$ (0.1)	$ (0.4)	$ (0.3)

Employee Benefit Plans - Additional Information (Detail) $ in Millions	Jun. 30, 2018 USD ($)
Defined Benefit Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Expected contribution	$ 19.8
OPEB
Defined Benefit Plan Disclosure [Line Items]
Expected contribution	$ 1.0

Other Income, Net - Schedule of Components of Other Income (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Securities earnings:
Dividends and interest			$ 16.8	$ 14.1
Currency transactions, net			4.8	(3.7)
Insurance recoveries	$ 0.2		0.4	0.1
Infrastructure reimbursement			4.0	0.2
Gain on land sales			12.5
Other, net			1.2	0.7
Total	$ 19.3	$ 3.8	$ 39.7	$ 11.4

Other Income, Net - Additional Information (Detail) $ in Millions	1 Months Ended	3 Months Ended	6 Months Ended
	Jan. 31, 2018 USD ($)	Mar. 31, 2018 USD ($) Parcel	Jun. 30, 2018 USD ($)
Disclosure Other Income Net Additional Information Detail [Line Items]
Number of land parecels \| Parcel		2
Net proceeds			$ 19.5
Pre-tax gain on sale of land		$ 11.9
Tremont
Disclosure Other Income Net Additional Information Detail [Line Items]
Net proceeds		18.9
NL
Disclosure Other Income Net Additional Information Detail [Line Items]
Net proceeds		0.6
Promissory Note \| Tremont
Disclosure Other Income Net Additional Information Detail [Line Items]
Principal payment of debt	$ 2.2	$ 2.2

Income Taxes - Components of Comprehensive Provision for Income Taxes Allocation (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Schedule Of Income Tax [Line Items]
Expected tax expense, at U.S. federal statutory income tax rate of 35% in 2017 and 21% in 2018	$ 8.8	$ 21.9	$ 31.2	$ 36.6
Incremental net tax on earnings and losses of non-U.S., U.S. and non-tax group companies	4.9	37.1	9.0	48.3
Non-U.S. tax rates	7.9	(2.3)	14.9	(4.7)
Valuation allowance	1.7	(157.6)	2.0	(162.6)
Adjustment to the reserve for uncertain tax positions, net	0.3	0.6	1.9	1.1
Nondeductible expenses	0.3	0.3	0.7	0.7
Domestic production activities deduction		(1.5)		(2.1)
U.S. state income taxes and other, net	(1.9)	0.7	(0.1)	0.6
Income tax expense (benefit)	22.0	(100.8)	58.2	(82.2)
Comprehensive provision for income taxes (benefit) allocable to:
Income from continuing operations	22.0	(100.8)	58.2	(82.2)
Discontinued operations	(0.4)	(66.4)	19.8	(67.2)
Retained earnings – change in accounting principle			1.1
Other comprehensive income (loss):
Currency translation	(3.3)	16.3	(1.9)	18.1
Marketable securities		(0.4)		(0.5)
Interest rate swap		(0.3)		0.1
Total	19.7	(149.5)	80.0	(128.8)
Kronos Worldwide, Inc. \| Canada – Germany APA
Schedule Of Income Tax [Line Items]
Canada – Germany APA			(1.4)
Pension Plans
Other comprehensive income (loss):
Defined benefit plans	1.5	2.2	3.0	3.1
OPEB Plans
Other comprehensive income (loss):
Defined benefit plans	$ (0.1)	$ (0.1)	$ (0.2)	$ (0.2)

Income Taxes - Components of Comprehensive Provision for Income Taxes Allocation (Parenthetical) (Detail)	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Income Tax Disclosure [Abstract]
U.S. federal statutory income tax rate	21.00%	35.00%

Income Taxes - Additional Information (Detail) - USD ($) $ in Millions	1 Months Ended		3 Months Ended		6 Months Ended			12 Months Ended
	Jun. 30, 2018	Apr. 30, 2018	Dec. 31, 2017	Jun. 30, 2017	Jun. 30, 2018	Dec. 31, 2017	Jun. 30, 2017	Dec. 31, 2017
Income Taxes Disclosure [Line Items]
U.S. federal statutory income tax rate					21.00%		35.00%
Deferred income tax benefit from change in enacted tax rate								$ 77.1
Provision for income taxes includes non-cash deferred income tax expense					$ 7.1
Business interest income, adjusted taxable income					30.00%
Increase (decrease) in unrecognized tax benefits	$ (1.8)				$ (1.8)
Germany-Canada APA
Income Taxes Disclosure [Line Items]
Non-cash income tax benefit					1.4
ASC 740 \| Discontinued Operations
Income Taxes Disclosure [Line Items]
Provision for income taxes includes non-cash deferred income tax expense					5.1
ASC 740 \| Continuing Operations
Income Taxes Disclosure [Line Items]
Provision for income taxes includes non-cash deferred income tax expense					$ 2.0
Expected Future Periods Net Operating Loss Utilization
Income Taxes Disclosure [Line Items]
Increase (decrease) in non-cash deferred income tax asset valuation allowance							$ (149.9)
Effect of Currency Exchange Rates
Income Taxes Disclosure [Line Items]
Increase (decrease) in non-cash deferred income tax asset valuation allowance								13.7
Transition Tax \| Maximum
Income Taxes Disclosure [Line Items]
Percentage of annual usage limitation on net operating loss carryforward					80.00%
Belgium \| Expected Future Periods Net Operating Loss Utilization
Income Taxes Disclosure [Line Items]
Increase (decrease) in non-cash deferred income tax asset valuation allowance							(8.0)
Germany and Belgian
Income Taxes Disclosure [Line Items]
Increase (decrease) in non-cash deferred income tax asset valuation allowance								(186.7)
Germany and Belgian \| Current Periods Net Operating Loss Utilization
Income Taxes Disclosure [Line Items]
Increase (decrease) in non-cash deferred income tax asset valuation allowance						$ (24.1)	(12.7)
Germany \| Expected Future Periods Net Operating Loss Utilization
Income Taxes Disclosure [Line Items]
Increase (decrease) in non-cash deferred income tax asset valuation allowance							(141.9)
Kronos Worldwide, Inc. \| Germany and Belgian \| Current Periods Net Operating Loss Utilization
Income Taxes Disclosure [Line Items]
Increase (decrease) in non-cash deferred income tax asset valuation allowance				$ (7.7)			(12.7)
European Subsidiaries \| Transition Tax
Income Taxes Disclosure [Line Items]
Current income tax expense provisional pursuant to transition tax			$ 76.2
Income tax liability payable period			8 years
European Subsidiaries \| Transition Tax \| 2017 Tax Year [Member]
Income Taxes Disclosure [Line Items]
Current income tax expense paid		$ 6.1
European Subsidiaries \| Transition Tax \| 2018 Tax Year [Member]
Income Taxes Disclosure [Line Items]
Current income tax expense paid	3.1
European Subsidiaries \| Transition Tax \| Contran
Income Taxes Disclosure [Line Items]
Income taxes payable noncurrent	64.0				$ 64.0
Income taxes payable current	3.0				3.0
European Subsidiaries \| Transition Tax \| Income Tax Payable \| Contran
Income Taxes Disclosure [Line Items]
Current income tax expense payable in increments over remainder of eight year period	$ 67.0				67.0
European and Canadian Subsidiaries \| Undistributed Earnings Previously Considered to be Permanently Reinvested
Income Taxes Disclosure [Line Items]
Aggregate provisional non-cash deferred income tax expense			$ 5.3		2.3
Corporate Tax Purposes \| Kronos Worldwide, Inc. \| Germany
Income Taxes Disclosure [Line Items]
Net operating loss carryforwards			652.0			652.0		652.0
Corporate Tax Purposes \| Kronos Worldwide, Inc. \| Belgium
Income Taxes Disclosure [Line Items]
Net operating loss carryforwards			50.0			50.0		50.0
Trade Tax Purposes \| Kronos Worldwide, Inc. \| Germany
Income Taxes Disclosure [Line Items]
Net operating loss carryforwards			0.5			0.5		0.5
Direct Investment in Subsidiary \| Kronos Worldwide, Inc.
Income Taxes Disclosure [Line Items]
Deferred income tax liability			157.6			157.6		157.6
Deferred income taxes expense					$ 7.5		$ 39.5
Direct Investment in Subsidiary \| Kronos Worldwide, Inc. \| Maximum
Income Taxes Disclosure [Line Items]
Deferred income tax liability			$ 173.0			$ 173.0		$ 173.0

Noncontrolling Interest in Subsidiaries - Noncontrolling Interest in Net Assets of Subsidiaries (Detail) - USD ($) $ in Millions	Jun. 30, 2018	Dec. 31, 2017
Noncontrolling interest in net assets:
Noncontrolling interest in subsidiaries	$ 361.7	$ 342.3
Kronos Worldwide, Inc.
Noncontrolling interest in net assets:
Noncontrolling interest in subsidiaries	224.2	204.9
NL Industries
Noncontrolling interest in net assets:
Noncontrolling interest in subsidiaries	66.0	71.1
CompX International
Noncontrolling interest in net assets:
Noncontrolling interest in subsidiaries	18.7	17.8
BMI
Noncontrolling interest in net assets:
Noncontrolling interest in subsidiaries	27.6	26.0
LandWell
Noncontrolling interest in net assets:
Noncontrolling interest in subsidiaries	$ 25.2	$ 22.5

Noncontrolling interest in Subsidiaries - Schedule of Noncontrolling Interest in Net Income of Subsidiaries (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Noncontrolling interest in net income (loss) of subsidiaries:
Noncontrolling interest in net income of subsidiaries	$ 8.7	$ 46.3	$ 27.2	$ 55.4
Kronos Worldwide, Inc.
Noncontrolling interest in net income (loss) of subsidiaries:
Noncontrolling interest in net income of subsidiaries			29.0	45.6
NL Industries
Noncontrolling interest in net income (loss) of subsidiaries:
Noncontrolling interest in net income of subsidiaries			(4.8)	8.4
CompX International
Noncontrolling interest in net income (loss) of subsidiaries:
Noncontrolling interest in net income of subsidiaries			1.1	0.9
BMI
Noncontrolling interest in net income (loss) of subsidiaries:
Noncontrolling interest in net income of subsidiaries			0.7	0.2
LandWell
Noncontrolling interest in net income (loss) of subsidiaries:
Noncontrolling interest in net income of subsidiaries			$ 1.2	$ 0.3

Accumulated Other Comprehensive Loss - Accumulated Other Comprehensive Income (Loss) (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Accumulated Other Comprehensive Income Loss [Line Items]
Balance at beginning of period			$ 424.4
Balance at end of period	$ 508.7		508.7
Marketable Securities
Accumulated Other Comprehensive Income Loss [Line Items]
Balance at beginning of period	1.6	$ 1.7	1.7	$ 1.7
Other comprehensive income (loss)			(0.1)
Balance at end of period	1.6	1.7	1.6	1.7
Interest Rate Swap
Accumulated Other Comprehensive Income Loss [Line Items]
Balance at beginning of period		(0.8)		(1.2)
Other comprehensive income (loss)		(0.5)		(0.5)
Less reclassification adjustment for amounts included in interest expense		0.2		0.6
Balance at end of period		(1.1)		(1.1)
Currency Translation Adjustment
Accumulated Other Comprehensive Income Loss [Line Items]
Balance at beginning of period	(46.9)	(83.1)	(54.1)	(88.5)
Other comprehensive income (loss)	(16.7)	9.3	(9.5)	14.7
Balance at end of period	(63.6)	(73.8)	(63.6)	(73.8)
Accumulated Defined Benefit Plans Adjustment \| Defined Benefit Pension Plans
Accumulated Other Comprehensive Income Loss [Line Items]
Balance at beginning of period	(127.1)	(135.0)	(129.0)	(137.0)
Other comprehensive income (loss)	1.9	0.6	3.8	2.6
Balance at end of period	(125.2)	(134.4)	(125.2)	(134.4)
Accumulated Defined Benefit Plans Adjustment \| OPEB
Accumulated Other Comprehensive Income Loss [Line Items]
Balance at beginning of period	2.2	2.9	2.4	3.1
Other comprehensive income (loss)	(0.2)	(0.2)	(0.4)	(0.4)
Balance at end of period	2.0	2.7	2.0	2.7
Total Accumulated Other Comprehensive Income (Loss)
Accumulated Other Comprehensive Income Loss [Line Items]
Balance at beginning of period	(170.2)	(214.3)	(179.0)	(221.9)
Other comprehensive income (loss)	(15.0)	9.4	(6.2)	17.0
Balance at end of period	$ (185.2)	$ (204.9)	$ (185.2)	$ (204.9)

Commitments and Contingencies - Lead Pigment Litigation-NL and Environmental Matters and Litigation - Additional Information (Detail) $ in Millions	1 Months Ended	3 Months Ended	6 Months Ended
	May 31, 2018 USD ($) Installment	Jun. 30, 2018 USD ($) Installment site	Jun. 30, 2018 USD ($) Cases Installment site	Dec. 31, 2017 USD ($)
Commitments And Contingent Liabilities [Line Items]
Litigation settlement net present value		$ 17.0	$ 17.0
Current insurance recovery receivable		15.0	15.0
Accrual for reasonably estimable environmental remediation and related matters		120.9	120.9	$ 117.5
Other Environmental Cleanup Matters
Commitments And Contingent Liabilities [Line Items]
Accrual for reasonably estimable environmental remediation and related matters		5.9	5.9
NL
Commitments And Contingent Liabilities [Line Items]
Recalculated abatement fund amount		409.0	409.0
Current insurance recovery receivable		15.0	15.0
NL \| Environmental Remediation Sites NL Named As PRP Or Defendant
Commitments And Contingent Liabilities [Line Items]
Accrual for reasonably estimable environmental remediation and related matters		$ 115.0	$ 115.0
Number of sites associated with remediation and related costs \| site		38	38
Number of sites for which NL not currently able to reasonably estimate range of costs \| site		5	5
NL \| Maximum \| Environmental Remediation Sites NL Named As PRP Or Defendant
Commitments And Contingent Liabilities [Line Items]
Upper end range, estimate costs for remediation and related matters		$ 145.0	$ 145.0
Lead Pigment Litigation \| NL
Commitments And Contingent Liabilities [Line Items]
Number of cases settled and dismissed and found not liable \| Cases			100
Period by which loss contingency claims settled and dismissed			20 years
Settlement agreement amount	$ 80.0	45.0
Settlement agreement amount to be paid	65.0	62.0	$ 62.0
Litigation settlement charge upon trial court's approval	$ 45.0	$ 45.0	$ 45.0
Number of annual installments \| Installment	5	5	5
Litigation settlement installments payment beginning term from approval	4 years	4 years
Remaining litigation settlement charge	$ 20.0	$ 20.0	$ 20.0
Remaining litigation settlement charge due in first installment	6.0
Remaining litigation settlement charge due in second installment	5.0
Remaining litigation settlement charge due in third installment	3.0
Remaining litigation settlement charge due in fourth installment	3.0
Remaining litigation settlement charge due in fifth installment	3.0
Discounted rate for estimated present value of remaining litigation amount		3.00%	3.00%
Litigation settlement net present value		$ 17.0	$ 17.0
Current insurance recovery receivable		15.0	15.0
Lead Pigment Litigation \| NL \| NL Former Insurance Carriers
Commitments And Contingent Liabilities [Line Items]
Settlement agreement amount to be paid	$ 15.0
California Lead Paint Litigation \| NL
Commitments And Contingent Liabilities [Line Items]
Amount awarded to the plaintiff			1,150.0
Lead Pigment Litigation Plaintiffs
Commitments And Contingent Liabilities [Line Items]
Proposed abatement fund amount		$ 730.0	$ 730.0

Commitments and Contingencies - Changes in Accrued Environmental Remediation and Related Costs (Detail) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2018	Dec. 31, 2017
Environmental Remediation Obligations [Abstract]
Balance at the beginning of the year	$ 117.5
Additions charged to expense, net	4.5
Payments, net	(1.1)
Balance at the end of period	120.9
Amounts recognized in our Condensed Consolidated Balance Sheet at the end of the period:
Current liabilities		$ 19.6	$ 6.8
Noncurrent liabilities		101.3	110.7
Total	$ 117.5	$ 120.9	$ 117.5

Commitments and Contingencies - Other Litigation - Additional Information (Detail) - Product Liability And Occupational Exposure Litigation Claims - NL	6 Months Ended
	Jun. 30, 2018 Cases Plaintiff
Commitments And Contingent Liabilities [Line Items]
Cases pending \| Cases	110
Pending Claims
Commitments And Contingent Liabilities [Line Items]
Number of plaintiffs involved	583
Administratively Dismissed Claims
Commitments And Contingent Liabilities [Line Items]
Number of plaintiffs involved	8,676

Fair Value Measurements and Financial Instruments - Marketable Securities and Financial Instruments on Fair Value Basis (Detail) - USD ($) $ in Millions	Jun. 30, 2018	Dec. 31, 2017
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Marketable securities, current	$ 1.6	$ 3.0
Marketable securities, noncurrent	256.8	255.7
Quoted Prices in Active Markets (Level 1)
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Marketable securities, noncurrent	3.8	1.3
Significant Other Observable Inputs (Level 2)
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Marketable securities, current	1.6	3.0
Marketable securities, noncurrent	3.0	4.4
Significant Unobservable Inputs (Level 3)
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Marketable securities, noncurrent	$ 250.0	$ 250.0

Fair Value Measurements and Financial Instruments - Additional Information (Detail)	Jun. 30, 2018 USD ($)	Jun. 30, 2018 EUR (€)	Dec. 31, 2017 USD ($)
Financial Instrument At Fair Value [Line Items]
Marketable securities	$ 256,800,000		$ 255,700,000
Amalgamated Sugar Company LLC
Financial Instrument At Fair Value [Line Items]
Marketable securities	250,000,000
Kronos Worldwide, Inc. \| 3.75% Senior Secured Notes due September 15, 2025 \| Kronos International, Inc
Financial Instrument At Fair Value [Line Items]
Estimated market price of the notes \| €		€ 965
Principal amount of debt instrument \| €		€ 1,000
Kronos Worldwide, Inc. \| Currency Forward Contracts
Financial Instrument At Fair Value [Line Items]
Currency forward contracts outstanding	$ 0		$ 0

Fair Value Measurements and Financial Instruments - Financial Instruments not Carried at Fair Value (Detail) - USD ($) $ in Millions	Jun. 30, 2018	Dec. 31, 2017
Kronos Worldwide, Inc. \| 3.75% Senior Secured Notes due September 15, 2025 \| Kronos International, Inc
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Long term debt, carrying amount	$ 458.6	$ 471.1
Long term debt, fair value	449.3	495.1
VALHI, INC. \| Contran Credit Facility
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Long term debt, carrying amount	320.6	284.3
Long term debt, fair value	320.6	284.3
VALHI, INC. \| Term Loan \| Snake River
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Long term debt, carrying amount	250.0	250.0
Long term debt, fair value	250.0	250.0
Tremont \| Promissory Note
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Long term debt, carrying amount	10.9	13.1
Long term debt, fair value	10.9	13.1
BMI \| Bank note payable \| Meadows Term Loan
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Long term debt, carrying amount	18.0	18.8
Long term debt, fair value	18.9	19.7
LandWell \| Unsecured Debt
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Long term debt, carrying amount	2.3	2.5
Long term debt, fair value	2.3	2.5
Carrying Amount
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Cash, cash equivalents and restricted cash equivalents	577.9	461.7
Deferred payment obligation	9.4	9.3
Fair Value
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Cash, cash equivalents and restricted cash equivalents	577.9	461.7
Deferred payment obligation	$ 9.4	$ 9.3

Recent Accounting Pronouncements - Additional Information (Detail) - USD ($) $ in Millions		3 Months Ended		6 Months Ended
	Jan. 01, 2018	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2017
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Retained earnings (deficit)		$ 72.6		$ 72.6		$ (17.9)
Land sales revenue		510.2	$ 481.8	976.2	$ 887.1
Real Estate Management And Development
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Land sales revenue		6.0	10.3	13.2	15.9
Accounting Standards Update 2014-09 \| Real Estate Management And Development
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Receivable	$ 6.1
Contract asset	8.8
Offsetting liability for deferred revenue	8.8
Accounting Standards Update 2014-09 \| Real Estate Management And Development \| Difference between Revenue Guidance in Effect before and after Topic 606
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Retained earnings (deficit)	6.1
Accounting Standards Update 2014-09 \| Real Estate Management And Development \| Difference between Revenue Guidance in Effect before and after Topic 606 \| Non-controlling interest
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Retained earnings (deficit)	$ 2.7
Accounting Standards Update 2014-09 \| Land [Member] \| Real Estate Management And Development \| Difference between Revenue Guidance in Effect before and after Topic 606
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Land sales revenue		$ 0.1		$ (0.2)
ASU 2017-07 \| Cost of Sales
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Reclassification adjustment to other components of net periodic pension and OPEB cost			2.6		5.2
ASU 2017-07 \| Selling, General and Administrative Expenses
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Reclassification adjustment to other components of net periodic pension and OPEB cost			$ 1.7		$ 3.2