Valhi (VHI) 10-K 15 Mar 18 2017 FY Annual report Financial data

Document and Entity Information

Document and Entity Information - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Mar. 02, 2018	Jun. 30, 2017
Document And Entity Information [Abstract]
Document Type	10-K
Amendment Flag	false
Document Period End Date	Dec. 31, 2017
Document Fiscal Year Focus	2,017
Document Fiscal Period Focus	FY
Trading Symbol	VHI
Entity Registrant Name	VALHI INC /DE/
Entity Central Index Key	59,255
Current Fiscal Year End Date	--12-31
Entity Well-known Seasoned Issuer	No
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Filer Category	Non-accelerated Filer
Entity Common Stock, Shares Outstanding		339,170,949
Entity Public Float			$ 74.7

CONSOLIDATED BALANCE SHEETS

CONSOLIDATED BALANCE SHEETS - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Current assets:
Cash and cash equivalents	$ 435.7	$ 159.7
Restricted cash equivalents	16.1	12.5
Marketable securities	3	4.4
Accounts and other receivables, net	332.7	254.3
Refundable income taxes	0.5	1
Receivable from affiliates	32.6	3.2
Land held for development	16.5	10.9
Inventories, net	398.4	359.2
Other current assets	15.5	15
Current assets of discontinued operations	11.2	17.2
Total current assets	1,262.2	837.4
Other assets:
Marketable securities	255.7	253.5
Investment in TiO2 manufacturing joint venture	86.5	78.9
Goodwill	379.7	379.7
Deferred income taxes	119.8
Pension asset	4.2	1.6
Other assets	169.9	164.7
Noncurrent assets of discontinued operations	40.8	211.4
Total other assets	1,056.6	1,089.8
Property and equipment:
Land	47	42.8
Buildings	261.6	237.5
Equipment	1,150.8	1,008.5
Mining properties	35	35.1
Construction in progress	58.3	41.8
Gross property and equipment	1,552.7	1,365.7
Less accumulated depreciation	964	849.7
Net property and equipment	588.7	516
Total assets	2,907.5	2,443.2
Current liabilities:
Current maturities of long-term debt	1.6	4.5
Accounts payable	116.1	92.8
Accrued liabilities	124.8	125.4
Payable to affiliates	16.2	20.2
Income taxes	25.1	5.1
Current liabilities of discontinued operations	47.3	46.1
Total current liabilities	331.1	294.1
Noncurrent liabilities:
Long-term debt	1,041.5	889.3
Deferred income taxes	183.2	278.1
Payable to affiliates	70.1
Accrued pension costs	266.4	240.2
Accrued environmental remediation and related costs	110.7	107.3
Accrued postretirement benefits costs	11.3	11.1
Other liabilities	73.6	84.5
Noncurrent liabilities of discontinued operations	52.9	94.2
Total noncurrent liabilities	1,809.7	1,704.7
Equity: Valhi stockholders' equity:
Preferred stock, $.01 par value; 5,000 shares authorized; 5,000 shares issued	667.3	667.3
Common stock, $.01 par value; 500.0 million shares authorized; 355.3 million shares issued and outstanding	3.6	3.6
Retained deficit	(17.9)	(198.5)
Accumulated other comprehensive loss	(179)	(221.9)
Treasury stock, at cost—13.2 million shares	(49.6)	(49.6)
Total Valhi stockholders’ equity	424.4	200.9
Noncontrolling interest in subsidiaries	342.3	243.5
Total equity	766.7	444.4
Total liabilities and equity	2,907.5	2,443.2
Commitments and contingencies (Notes 9,14,17 and 18)

CONSOLIDATED BALANCE SHEETS (Pa

CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares	Dec. 31, 2017	Dec. 31, 2016
Statement Of Financial Position [Abstract]
Preferred stock, par value	$ 0.01	$ 0.01
Preferred stock, shares authorized	5,000	5,000
Preferred stock, shares issued	5,000	5,000
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	500,000,000	500,000,000
Common stock, shares issued	355,300,000	355,300,000
Common stock, shares outstanding	355,300,000	355,300,000
Treasury stock, shares	13,200,000	13,200,000

CONSOLIDATED STATEMENTS OF OPER

CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Revenues and other income:
Net sales	$ 1,879.4	$ 1,519.4	$ 1,487.9
Other income, net	25.2	39	31.9
Total revenues and other income	1,904.6	1,558.4	1,519.8
Costs and expenses:
Cost of sales	1,277.4	1,219.2	1,259.5
Selling, general and administrative	269.4	236.4	248.6
Contract related intangible asset impairment		5.1
Loss on prepayment of debt	7.1
Interest	58.9	58.1	53.6
Total costs and expenses	1,612.8	1,518.8	1,561.7
Income (loss) from continuing operations before income taxes	291.8	39.6	(41.9)
Income tax expense (benefit)	(120)	18.6	107.5
Net income (loss) from continuing operations	411.8	21	(149.4)
Loss from discontinued operations, net of tax	(109.2)	(24)	(21.7)
Net income (loss)	302.6	(3)	(171.1)
Noncontrolling interest in net income (loss) of subsidiaries	95.1	12.9	(37.5)
Net income (loss) attributable to Valhi stockholders	207.5	(15.9)	(133.6)
Amounts attributable to Valhi stockholders:
Income (loss) from continuing operations	316.7	8.1	(111.9)
Loss from discontinued operations	(109.2)	(24)	(21.7)
Net income (loss) attributable to Valhi stockholders	$ 207.5	$ (15.9)	$ (133.6)
Basic and diluted net income (loss) per share:
Income (loss) from continuing operations	$ 0.93	$ 0.02	$ (0.33)
Loss from discontinued operations	(0.32)	(0.07)	(0.06)
Net income (loss) per share	0.61	(0.05)	(0.39)
Cash dividends per share	$ 0.08	$ 0.08	$ 0.08
Basic and diluted weighted average shares outstanding	342	342	342

CONSOLIDATED STATEMENTS OF COMP

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Net income (loss)	$ 302.6	$ (3)	$ (171.1)
Other comprehensive income (loss), net of tax:
Currency translation	47.9	(14.5)	(77)
Interest rate swap	1.5	0.2	(1.8)
Marketable securities	5	4	(7.5)
Total other comprehensive income (loss), net	64.6	(30.9)	(74.4)
Comprehensive income (loss)	367.2	(33.9)	(245.5)
Comprehensive income (loss) attributable to noncontrolling interest	116.8	(6.9)	(63.5)
Comprehensive income (loss) attributable to Valhi stockholders	250.4	(40.8)	(182)
Defined Benefit Pension Plans
Other comprehensive income (loss), net of tax:
Pension and other postretirement benefit plan	11	(19.7)	12.6
OPEB
Other comprehensive income (loss), net of tax:
Pension and other postretirement benefit plan	$ (0.8)	$ (0.9)	$ (0.7)

CONSOLIDATED STATEMENTS OF STOC

CONSOLIDATED STATEMENTS OF STOCKHOLDERS EQUITY - USD ($) $ in Millions	Total	Preferred stock	Common stock	Additional paid-in capital	Retained earnings (deficit)	Accumulated other comprehensive income (loss)	Treasury stock	Non-controlling interest
Balance at Dec. 31, 2014	$ 813.9	$ 667.3	$ 3.6		$ 4.9	$ (148.6)	$ (49.6)	$ 336.3
Net income (loss)	(171.1)				(133.6)			(37.5)
Cash dividends	(41.7)			$ (0.2)	(26.9)			(14.6)
Other comprehensive income (loss), net	(74.4)					(48.4)		(26)
Equity transactions with noncontrolling interest, net	0.2			0.2
Balance at Dec. 31, 2015	526.9	667.3	3.6		(155.6)	(197)	(49.6)	258.2
Net income (loss)	(3)				(15.9)			12.9
Cash dividends	(48.7)			(0.2)	(26.9)			(21.6)
Other comprehensive income (loss), net	(30.9)					(24.9)		(6)
Equity transactions with noncontrolling interest, net	0.1			0.2	(0.1)
Balance at Dec. 31, 2016	444.4	667.3	3.6		(198.5)	(221.9)	(49.6)	243.5
Net income (loss)	302.6				207.5			95.1
Cash dividends	(45.3)			(0.3)	(26.9)			(18.1)
Other comprehensive income (loss), net	64.6					42.9		21.7
Equity transactions with noncontrolling interest, net	0.4			$ 0.3				0.1
Balance at Dec. 31, 2017	$ 766.7	$ 667.3	$ 3.6		$ (17.9)	$ (179)	$ (49.6)	$ 342.3

CONSOLIDATED STATEMENTS OF CASH

CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Cash flows from operating activities:
Net income (loss)	$ 302.6	$ (3)	$ (171.1)
Depreciation and amortization	59	67.5	69.9
Net (gain) loss from:
Securities transactions, net	(0.1)	(0.5)
Disposal of property and equipment, net	0.5	0.3	0.8
Noncash interest expense	2.5	2.6	2.5
Benefit plan expense greater than cash funding	10.5	4.6	2.9
Deferred income taxes	(293.2)	(39.1)	85.7
Loss on prepayment of debt	7.1
Payment for termination of interest rate swap contract	(3.3)
Long-lived asset impairment	170.6
Distributions from (contributions to) TiO2 manufacturing joint venture, net	(6)	3.6	6.5
Contract related intangible asset impairment		5.1
Other, net		1.9	7.8
Change in assets and liabilities:
Accounts and other receivables, net	(47.5)	(47.4)	22.2
Land held for development, net	6.6	18.3	7.1
Inventories, net	(5.5)	39.6	(8.4)
Accounts payable and accrued liabilities	12.9	(0.3)	(14.3)
Income taxes	19.5	3.7	(0.9)
Accounts with affiliates	35.2	13.8	17.1
Other noncurrent assets	(0.9)	0.1	(2.5)
Other noncurrent liabilities	3.7	(3.8)	2.7
Other, net	(14.9)	12.8	(5.9)
Net cash provided by operating activities	259.3	79.8	22.1
Cash flows from investing activities:
Capital expenditures	(71.3)	(58.9)	(54.6)
Capitalized permit costs	(2.2)	(1.5)	(1.3)
Purchases of marketable securities	(9.7)	(11.4)	(13.6)
Proceeds from disposal of marketable securities	9	10.7	15
Other, net	(0.2)	(0.5)	0.4
Net cash used in investing activities	(74.4)	(61.6)	(54.1)
Indebtedness:
Borrowings	748.1	312.2	84.9
Principal payments	(600.2)	(309)	(53.4)
Deferred financing costs paid	(9)
Valhi cash dividends paid	(27.2)	(27.1)	(27.1)
Distributions to noncontrolling interest in subsidiaries	(18.1)	(21.6)	(15)
Net cash provided by (used in) financing activities	93.6	(45.5)	(10.6)
Net increase (decrease)	278.5	(27.3)	(42.6)
Cash, cash equivalents and restricted cash and cash equivalents – net change from
Operating, investing and financing activities	278.5	(27.3)	(42.6)
Effect of exchange rates on cash	14.4	(5.3)	(8.5)
Net change for the year	292.9	(32.6)	(51.1)
Balance at beginning of year	196.5	229.1	280.2
Balance at end of year	489.4	196.5	229.1
Cash paid for:
Interest, net of amounts capitalized	59.3	60.8	56.6
Income taxes, net	62.3	20.3	10.2
Noncash investing activities:
Changes in accruals for capital expenditures	9.4	$ 8	$ 6.7
Noncash financing activities:
Borrowings paid directly to lender to settle refinanced indebtedness	9.3
Principal payments paid directly by lender	(8.4)
Borrowings paid directly to lender for debt issuance costs	$ (0.9)

Summary of Significant Accounti

Summary of Significant Accounting Policies	12 Months Ended
	Dec. 31, 2017
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	Note 1—Summary of significant accounting policies: Nature of our business. Valhi, Inc. (NYSE: VHI) is primarily a holding company. We operate through our wholly-owned and majority-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 MKT: 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. Organization. We are majority owned by a wholly-owned subsidiary of Contran Corporation (“Contran”), which owns approximately 93% of our outstanding common stock at December 31, 2017. 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. Unless otherwise indicated, references in this report to “we,” “us” or “our” refer to Valhi, Inc. and its subsidiaries, taken as a whole. Management’s estimates. The preparation of our Consolidated Financial Statements in conformity with accounting principles generally accepted in the United States of America (“GAAP”), requires us to make estimates and assumptions that affect the reported amounts of our assets and liabilities and disclosures of contingent assets and liabilities at each balance sheet date and the reported amounts of our revenues and expenses during each reporting period. Actual results may differ significantly from previously-estimated amounts under different assumptions or conditions. Principles of consolidation. Our Consolidated Financial Statements include the financial position, results of operations and cash flows of Valhi and our majority-owned and wholly-owned subsidiaries. We eliminate all material intercompany accounts and balances. Changes in ownership are accounted for as equity transactions with no gain or loss recognized on the transaction unless there is a change in control. See Note 3. Foreign currency translation. The financial statements of our foreign subsidiaries are translated to U.S. dollars. The functional currency of our foreign subsidiaries is generally the local currency of the country. Accordingly, we translate the assets and liabilities at year-end rates of exchange, while we translate their revenues and expenses at average exchange rates prevailing during the year. We accumulate the resulting translation adjustments in stockholders’ equity as part of accumulated other comprehensive income (loss), net of related deferred income taxes and noncontrolling interest. We recognize currency transaction gains and losses in income. Derivatives and hedging activities. We recognize derivatives as either an asset or liability measured at fair value in accordance with Accounting Standards Codification (“ASC”) Topic 815, Derivatives and Hedging . We recognize the effect of changes in the fair value of derivatives either in net income or other comprehensive income (loss), depending on the intended use of the derivative. See Note 19. Cash and cash equivalents. We classify bank time deposits and government and commercial notes and bills with original maturities of three months or less as cash equivalents. Restricted cash and cash equivalents. We classify cash and cash equivalents that have been segregated or are otherwise limited in use as restricted. Such restrictions principally include amounts pledged as collateral with respect to performance obligations or letters of credit required by regulatory agencies for various environmental remediation sites, cash held in escrow under various hold-back agreements with third-party homebuilders associated with our Real Estate Management and Development Segment, cash pledged under debt agreement covenants and cash held in trust by our insurance brokerage subsidiary pending transfer to the applicable insurance or reinsurance carrier. To the extent the restricted amount relates to a recognized liability, we classify the restricted amount as current or noncurrent according to the corresponding liability. To the extent the restricted amount does not relate to a recognized liability, we classify restricted cash as a current asset. Restricted cash and cash equivalents classified as a current asset are presented separately on our Consolidated Balance Sheets, and restricted cash and cash equivalents classified as a noncurrent asset are presented as a component of other assets on our Consolidated Balance Sheets, as disclosed in Note 7. Marketable securities and securities transactions. We carry marketable debt and equity securities at fair value. ASC Topic 820, Fair Value Measurements and Disclosures , establishes a consistent framework for measuring fair value and (with certain exceptions) this framework is generally applied to all financial statement items required to be measured at fair value. The standard requires fair value measurements to be classified and disclosed in one of the following three categories: • Level 1 —Unadjusted quoted prices in active markets that are accessible at the measurement date for identical, unrestricted assets or liabilities; • Level 2 —Quoted prices in markets that are not active, or inputs which are observable, either directly or indirectly, for substantially the full term of the assets or liability; and • Level 3 —Prices or valuation techniques that require inputs that are both significant to the fair value measurement and unobservable. We recognize unrealized and realized gains and losses on trading securities in income. We accumulate unrealized gains and losses on available-for-sale securities as part of accumulated other comprehensive income (loss), net of related deferred income taxes and noncontrolling interest. Realized gains and losses are based on specific identification of the securities sold. Accounts receivable. We provide an allowance for doubtful accounts for known and estimated potential losses arising from our sales to customers based on a periodic review of these accounts. Inventories and cost of sales. We state inventories at the lower of cost or net realizable value. We generally base inventory costs for all inventory categories on average cost that approximates the first-in, first-out method. Inventories include the costs for raw materials, the cost to manufacture the raw materials into finished goods and overhead. Depending on the inventory’s stage of completion, our manufacturing costs can include the costs of packing and finishing, utilities, maintenance, depreciation, shipping and handling, and salaries and benefits associated with our manufacturing process. We allocate fixed manufacturing overhead costs based on normal production capacity. Unallocated overhead costs resulting from periods with abnormally low production levels are charged to expense as incurred. As inventory is sold to third parties, we recognize the cost of sales in the same period the sale occurs. We periodically review our inventory for estimated obsolescence or instances when inventory is no longer marketable for its intended use, and we record any write-down equal to the difference between the cost of inventory and its estimated net realizable value based on assumptions about alternative uses, market conditions and other factors. Land held for development. Land held for development relates to BMI and LandWell, for which we gained a controlling interest prior to 2015. The primary asset of LandWell is certain real property in Henderson, Nevada some of which we are developing for residential lots in a master planned community. Land held for development was recorded at the estimated acquisition date fair value based on a value per developable acre at the time of purchase. Development costs, including infrastructure improvements, real estate taxes, capitalized interest and other costs, some of which may be allocated, are capitalized during the period incurred. We allocate costs to each parcel sold on a pro-rata basis associated with the relevant development activity, and the costs allocated to parcels expected to be sold within one year are presented separately in current assets on our Consolidated Balance Sheets. As land parcels are sold, costs of land sales, including land and development costs, are allocated based on specific identification, relative sales value, square footage or a combination of these methods. All sales and marketing activities and general overhead are charged to selling, general and administrative expense as incurred. Investment in TiO 2 We account for our investment in a 50%-owned manufacturing joint venture by the equity method. Distributions received from such investee are classified for statement of cash flow purposes using the “nature of distribution” approach under ASC Topic 230. See Note 7. Goodwill and other intangible assets; amortization expense. Goodwill represents the excess of cost over fair value of individual net assets acquired in business combinations. Goodwill is not subject to periodic amortization. We amortize other intangible assets by the straight-line method over their estimated lives and state them net of accumulated amortization. We evaluate goodwill for impairment, annually, or when events or changes in circumstances indicate the carrying value may not be recoverable. We evaluate other intangible assets for impairment when events or changes in circumstances indicate the carrying value may not be recoverable. See Note 8. Property and equipment; depreciation expense. Asset Useful lives Buildings and improvements 10 to 40 years Machinery and equipment 3 to 20 years Mine development costs Units-of-production We use accelerated depreciation methods for income tax purposes, as permitted. Upon the sale or retirement of an asset, we remove the related cost and accumulated depreciation from the accounts and recognize any gain or loss in income currently. We expense expenditures for maintenance, repairs and minor renewals as incurred that do not improve or extend the life of the assets, including planned major maintenance. We have a governmental concession with an unlimited term to operate our ilmenite mines in Norway. Mining properties consist of buildings and equipment used in our Norwegian ilmenite mining operations. While we own the land and ilmenite reserves associated with the mining operations, such land and reserves were acquired for nominal value and we have no material asset recognized for the land and reserves related to our mining operations. We perform impairment tests when events or changes in circumstances indicate the carrying value may not be recoverable. We consider all relevant factors. We perform the impairment test by comparing the estimated future undiscounted cash flows (exclusive of interest expense) associated with the asset or asset group to the asset’s net carrying value to determine if a write-down to fair value is required. Long-term debt. Employee benefit plans. Accounting and funding policies for our retirement plans are described in Note 11. Income taxes. We and our qualifying subsidiaries are members of Contran’s consolidated U.S federal income tax group (the “Contran Tax Group”). We and certain of our qualifying subsidiaries also file consolidated income tax returns with Contran in various U.S. state jurisdictions. As a member of the Contran Tax Group, we are jointly and severally liable for the federal income tax liability of Contran and the other companies included in the Contran Tax Group for all periods in which we are included in the Contran Tax Group. See Note 17. As a member of the Contran Tax Group, we are a party to a tax sharing agreement which provides that we compute our tax provision for U.S. income taxes on a separate-company basis using the tax elections made by Contran. Pursuant to the tax sharing agreement, we make payments to or receive payments from Contran in amounts we would have paid to or received from the U.S. Internal Revenue Service or the applicable state tax authority had we not been a member of the Contran Tax Group. We made net cash payments for income taxes to Contran of $2.5 million in 2015, $10.7 million in 2016 and $38.9 million in 2017. We recognize deferred income tax assets and liabilities for the expected future tax consequences of temporary differences between the income tax and financial reporting carrying amounts of assets and liabilities, including investments in our subsidiaries and affiliates who are not members of the Contran Tax Group and undistributed earnings of non-U.S. subsidiaries which are not deemed to be permanently reinvested. At December 31, 2017, none of the post-1986 undistributed earnings of our European subsidiaries and none of the undistributed earnings of our Canadian Subsidiary, are subject to permanent reinvestment plans. It is currently not practical for us to determine the amount of the unrecognized deferred income tax liability related to our investments in our non-U.S. subsidiaries which are permanently reinvested due to the complexities associated with our organizational structure, changes in the Tax Cuts and Jobs Act (2017 Tax Act) enacted on December 22, 2017, and the U.S. taxation of such investments in the states in which we operate. We are currently reviewing certain other provisions under the 2017 Tax Act that would impact our determination of the aggregate temporary differences attributable to our investments in our non-U.S. subsidiaries. Deferred income tax assets and liabilities for each tax-paying jurisdiction in which we operate are netted and presented as either a noncurrent deferred income tax asset or liability, as applicable. We periodically evaluate our deferred tax assets in the various taxing jurisdictions in which we operate and adjust any related valuation allowance based on the estimate of the amount of such deferred tax assets that we believe does not meet the more-likely-than-not recognition criteria. We account for the tax effects of a change in tax law as a component of the income tax provision related to continuing operations in the period of enactment, including the tax effects of any deferred income taxes originally established through a financial statement component other than continuing operations (i.e. other comprehensive income). Changes in applicable income tax rates over time as a result of changes in tax law, or times in which a deferred income tax asset valuation allowance is initially recognized in one year and subsequently reversed in a later year, can give rise to “stranded” tax effects in accumulated other comprehensive income in which the net accumulated income tax (benefit) remaining in accumulated other comprehensive income does not correspond to the then-applicable income tax rate applied to the pre-tax amount which resides in accumulated other comprehensive income. As permitted by GAAP, our accounting policy is to remove any such stranded tax effect remaining in accumulated other comprehensive income, by recognizing an offset to our provision for income taxes related to continuing operations, only at the time when there is no remaining pre-tax amount in accumulated other comprehensive income. For accumulated other comprehensive income related to marketable securities, this would occur whenever we would have no available-for-sale marketable securities for which unrealized gains and losses are recognized through other comprehensive income. For accumulated other comprehensive income related to currency translation, this would occur only upon the sale or complete liquidation of one of our non-U.S. subsidiaries. For defined pension benefit plans and OPEB plans, this would occur whenever one of our subsidiaries which previously sponsored a defined benefit pension or OPEB plan had terminated such a plan and had no future obligation or plan asset associated with such a plan. We record a reserve for uncertain tax positions where we believe it is more-likely-than-not our position will not prevail with the applicable tax authorities. The amount of the benefit associated with our uncertain tax positions that we recognize is limited to the largest amount for which we believe the likelihood of realization is greater than 50%. We accrue penalties and interest on the difference between tax positions taken on our tax returns and the amount of benefit recognized for financial reporting purposes. We classify our reserves for uncertain tax positions in a separate current or noncurrent liability, depending on the nature of the tax position. See Note 14. Environmental remediation and related costs. We record liabilities related to environmental remediation and related costs when estimated future expenditures are probable and reasonably estimable. We adjust these accruals as further information becomes available to us or as circumstances change. We generally do not discount estimated future expenditures to their present value due to the uncertainty of the timing of the ultimate payout. We recognize any recoveries of remediation costs from other parties when we deem their receipt to be probable. We expense any environmental remediation related legal costs as incurred. At December 31, 2016 and 2017, we had not recognized any material receivables for recoveries. See Note 18. Net sales. We record sales when products are shipped and title and other risks and rewards of ownership have passed to the customer. We include amounts charged to customers for shipping and handling costs in net sales. We state sales net of price, early payment and distributor discounts and volume rebates. 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). Certain retail land sales of our Real Estate Management and Development Segment are recognized under the percentage-of-completion method when we are required to complete property development and improvements after title passes to the buyer and when all of the criteria of ASC 970-605-30 are met. Under such method, revenues 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. Such costs incurred and total estimated costs include amounts specifically identifiable with the parcels sold as well as certain development costs for the entire residential/planned community which are allocated to the parcels sold under applicable GAAP. Other retail land sales are generally recognized by the full accrual method of accounting at closing, in which title passes to the customer and we have no remaining contractual obligations to the buyer. Selling, general and administrative expenses; shipping and handling costs; advertising costs; research and development costs. Selling, general and administrative expenses include costs related to marketing, sales, distribution, shipping and handling, research and development, legal, environmental remediation and administrative functions such as accounting, treasury and finance, and includes costs for salaries and benefits not associated with our manufacturing process, travel and entertainment, promotional materials and professional fees. Shipping and handling costs of our Chemicals Segment were approximately $87 million in 2015, $90 million in 2016 and $101 million in 2017. Shipping and handling costs of our Component Products and Waste Management Segments are not material. We expense advertising and research, development and certain sales technical support costs as incurred. Advertising costs were approximately $1 million in each of 2015, 2016 and 2017. Research, development and certain sales technical support costs were approximately $16 million in 2015, $13 million in 2016 and $20 million in 2017.

Business and Geographic Segment

Business and Geographic Segments	12 Months Ended
	Dec. 31, 2017
Segment Reporting [Abstract]
Business and Geographic Segments	Note 2—Business and geographic segments: Business segment Entity % controlled at 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. See Note 3. We are organized based upon our operating subsidiaries. Our operating segments are defined as components of our consolidated operations about which separate financial information is available that is regularly evaluated by our chief operating decision maker in determining how to allocate resources and in assessing performance. Each operating segment is separately managed, and each operating segment represents a strategic business unit offering different products. We have the following three consolidated reportable operating segments. • Chemicals —Our chemicals segment is operated through our majority control of Kronos. Kronos is a leading global producer and marketer of value-added titanium dioxide pigments (“TiO 2 ”). TiO 2 is used to impart whiteness, brightness, opacity and durability to a wide variety of products, including paints, plastics, paper, fibers and ceramics. Additionally, TiO 2 is a critical component of everyday applications, such as coatings, plastics and paper, as well as many specialty products such as inks, foods and cosmetics. See Note 7. • Component Products —We operate in the component products industry through our majority control of CompX. CompX is a leading manufacturer of security products used in the recreational transportation, postal, office and institutional furniture, cabinetry, tool storage, healthcare and a variety of other industries. CompX is also a leading manufacturer of stainless steel exhaust systems, gauges, throttle controls and trim tabs for the recreational marine industry. All of CompX production facilities are in the United States. • Real Estate Management and Development— We operate in real estate management and development through our majority control of BMI and LandWell. BMI provides utility services to certain industrial and municipal customers and owns real property in Henderson, Nevada. LandWell is engaged in efforts to develop certain land holdings for commercial, industrial and residential purposes in Henderson, Nevada. We evaluate segment performance based on segment operating income, which we define as income before income taxes and interest expense, exclusive of certain non-recurring items (such as gains or losses on disposition of business units and other long-lived assets outside the ordinary course of business and certain legal settlements) and certain general corporate income and expense items (including securities transactions gains and losses and interest and dividend income), which are not attributable to the operations of the reportable operating segments. The accounting policies of our reportable operating segments are the same as those described in Note 1. Segment results we report may differ from amounts separately reported by our various subsidiaries and affiliates due to purchase accounting adjustments and related amortization or differences in how we define operating income. Intersegment sales are not material. Interest income included in the calculation of segment operating income is not material in 2015, 2016 or 2017. Capital expenditures include additions to property and equipment but exclude amounts we paid for business units acquired in business combinations. Depreciation and amortization related to each reportable operating segment includes amortization of any intangible assets attributable to the segment. Amortization of deferred financing costs and any premium or discount associated with the issuance of indebtedness is included in interest expense. Segment assets are comprised of all assets attributable to each reportable operating segment, including goodwill and other intangible assets. Our investment in the TiO 2 Years ended December 31, 2015 2016 2017 (In millions) Net sales: Chemicals $ 1,348.8 $ 1,364.3 $ 1,729.0 Component products 109.0 108.9 112.0 Real estate management and development 30.1 46.2 38.4 Total net sales $ 1,487.9 $ 1,519.4 $ 1,879.4 Cost of sales: Chemicals $ 1,158.5 $ 1,109.2 $ 1,172.1 Component products 75.6 73.8 77.2 Real estate management and development 25.4 36.2 28.1 Total cost of sales $ 1,259.5 $ 1,219.2 $ 1,277.4 Gross margin: Chemicals $ 190.3 $ 255.1 $ 556.9 Component products 33.4 35.1 34.8 Real estate management and development 4.7 10.0 10.3 Total gross margin $ 228.4 $ 300.2 $ 602.0 Operating income: Chemicals $ 7.1 $ 91.0 $ 341.1 Component products 14.0 15.6 15.2 Real estate management and development — .8 6.6 Total operating income 21.1 107.4 362.9 General corporate items: Securities earnings 26.4 27.2 29.5 Insurance recoveries 3.7 .4 .4 General expenses, net (39.5 ) (37.3 ) (35.0 ) Loss on prepayment of debt — — (7.1 ) Interest expense (53.6 ) (58.1 ) (58.9 ) Income (loss) from continuing operations before income taxes $ (41.9 ) $ 39.6 $ 291.8 Years ended December 31, 2015 2016 2017 (In millions) Depreciation and amortization: Chemicals $ 44.3 $ 42.6 $ 43.4 Component products 3.5 3.7 3.7 Waste management (1) 19.3 18.3 8.9 Real estate management and development 2.8 2.9 3.0 Total $ 69.9 $ 67.5 $ 59.0 Capital expenditures: Chemicals $ 47.5 $ 53.0 $ 64.3 Component products 4.2 3.2 2.8 Waste management (1) 1.7 .7 .9 Real estate management and development 1.2 2.0 3.3 Total $ 54.6 $ 58.9 $ 71.3 December 31, 2015 2016 2017 (In millions) Total assets: Operating segments: Chemicals $ 1,617.6 $ 1,548.9 $ 2,190.5 Component products 88.7 97.9 104.9 Waste management (1) 231.9 228.6 52.0 Real estate management and 232.9 200.9 206.9 Corporate and eliminations 366.3 366.9 353.2 Total $ 2,537.4 $ 2,443.2 $ 2,907.5 (1) Geographic information . We attribute net sales to the place of manufacture (point-of-origin) and the location of the customer (point-of-destination); we attribute property and equipment to their physical location. At December 31, 2017 the net assets of our non-U.S. subsidiaries included in consolidated net assets approximated $614 million (in 2016 the total was $374 million). Years ended December 31, 2015 2016 2017 (In millions) Net sales—point of origin: United States $ 796.9 $ 819.3 $ 992.3 Germany 690.0 699.8 918.6 Canada 216.9 257.7 309.2 Belgium 198.8 187.4 279.9 Norway 183.5 164.8 216.4 Eliminations (598.2 ) (609.6 ) (837.0 ) Total $ 1,487.9 $ 1,519.4 $ 1,879.4 Net sales—point of destination: North America $ 559.0 $ 566.8 $ 668.3 Europe 700.9 698.2 899.2 Asia and other 228.0 254.4 311.9 Total $ 1,487.9 $ 1,519.4 $ 1,879.4 December 31, 2015 2016 2017 (In millions) Net property and equipment: United States $ 77.0 $ 76.2 $ 80.8 Germany 229.9 223.7 259.2 Canada 55.0 60.5 69.0 Norway 71.9 75.5 81.7 Belgium 81.8 80.1 98.0 Total $ 515.6 $ 516.0 $ 588.7

Business Combinations, Disposit

Business Combinations, Dispositions and Related Transactions	12 Months Ended
	Dec. 31, 2017
Business Combinations [Abstract]
Business Combinations, Dispositions and Related Transactions	Note 3—Business combinations, dispositions and related transactions: Kronos Worldwide, Inc. Prior to 2015, Kronos’ board of directors authorized the repurchase of up to 2.0 million shares of its common stock in open market transactions, including block purchases, or in privately-negotiated transactions at unspecified prices and over an unspecified period of time. Kronos may repurchase its common stock from time to time as market conditions permit. The stock repurchase program does not include specific price targets or timetables and may be suspended at any time. Depending on market conditions, Kronos may terminate the program prior to its completion. Kronos would use cash on hand to acquire the shares. Repurchased shares will be added to Kronos’ treasury and cancelled. Kronos did not make any repurchases under the plan during 2015, 2016 or 2017, and at December 31, 2017 approximately 1.95 million shares are available for repurchase. CompX International Inc. Prior to 2015, CompX’s board of directors authorized various repurchases of its Class A common stock in open market transactions, including block purchases, or in privately-negotiated transactions at unspecified prices and over an unspecified period of time. CompX may repurchase its common stock from time to time as market conditions permit. The stock repurchase program does not include specific price targets or timetables and may be suspended at any time. Depending on market conditions, CompX may terminate the program prior to its completion. CompX would generally use cash on hand to acquire the shares. Repurchased shares will be added to CompX’s treasury and cancelled. CompX did not make any repurchases under the plan during 2015, 2016 or 2017, and at December 31, 2017 approximately 678,000 shares were available for purchase under these authorizations. Discontinued Operations — 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 long-lived asset impairment of $170.6 million recognized in the second quarter of 2017 as discussed below. In accordance with GAAP, the Waste Management Segment has been reclassified as discontinued operations in our Consolidated Balance Sheets and Consolidated Statements of Operations for all periods presented. Also in accordance with GAAP, we have not reclassified our Consolidated Statement of Cash Flows to reflect the Waste Management Segment as discontinued operations. Selected financial data for the operations of the disposed Waste Management Segment is presented below. Current assets consist principally of trade accounts receivable. December 31, 2016 2017 (In millions) ASSETS Current assets $ 17.2 $ 11.2 Operating permits 42.9 — Restricted cash 21.6 27.2 Property and equipment, net 138.5 6.0 Other noncurrent assets 8.4 7.6 Total noncurrent assets 211.4 40.8 Total assets $ 228.6 $ 52.0 LIABILITIES Current portion of long-term debt $ 3.3 $ 3.0 Payable to Contran 31.4 36.1 Other current liabilities 11.4 8.2 Total current liabilities 46.1 47.3 Long-term debt 67.9 65.0 Deferred income taxes (3.1 ) (43.8 ) Accrued noncurrent closure and post closure costs 29.4 31.7 Total noncurrent liabilities 94.2 52.9 Total liabilities $ 140.3 $ 100.2 Years ended December 31, 2015 2016 2017 (In millions) Net sales $ 45.0 $ 47.4 $ 75.4 Operating loss $ (26.5 ) $ (26.2 ) $ (167.1 ) Other income (expense), net .1 (5.3 ) (4.4 ) Interest expense, net (5.4 ) (5.1 ) (4.8 ) Loss before taxes (31.8 ) (36.6 ) (176.3 ) Income tax benefit (10.1 ) (12.6 ) (67.1 ) Net loss $ (21.7 ) $ (24.0 ) $ (109.2 ) Net cash provided by (used in) operating activities (12.2 ) (10.7 ) 18.1 Net cash provided by (used in) investing activities .8 (2.7 ) (3.4 ) The Waste Management Segment’s operating loss in 2017 includes a $170.6 million long-lived asset impairment which is included in the determination of its operating income. As previously reported, in November 2015 we entered into an agreement with Rockwell Holdco, Inc. ("Rockwell"), for the sale of WCS to Rockwell. The agreement, as amended, was for $270 million in cash plus the assumption of all of WCS’ third-party indebtedness incurred prior to the date of the agreement. Additionally, Rockwell and its affiliates would have assumed all financial assurance obligations related to the WCS business. Rockwell is the parent company of EnergySolutions, Inc. Completion of the sale was subject to certain customary closing conditions, including the receipt of U.S. anti-trust approval. The U.S. Department of Justice (“DOJ”) did not give the parties anti-trust clearance, and on November 16, 2016, the DOJ filed an anti-trust action in the U.S. federal district court for the District of Delaware styled United States of America vs. Energy Solutions, Inc., et al The Court’s decision and resulting termination of the purchase agreement with Rockwell constituted triggering events under ASC 360-10-35-21, requiring WCS’ long-lived assets to be tested for recoverability. Given the challenges facing WCS’ disposal operations we concluded that the long-lived assets associated with WCS’ operations were impaired at June 30, 2017, concurrent with the termination of the purchase agreement with Rockwell. Accordingly, we recognized an aggregate $170.6 million impairment charge as of June 30, 2017, to reduce the carrying value of WCS’ long-lived assets recognized for financial reporting purposes to their estimated fair value. Such $170.6 million impairment charge relates to the following long-lived assets of WCS: net property and equipment - $127.5 million; waste disposal site operating permits, net - $42.0 million; and other assets - $1.1 million. With respect to the operating permits, we concluded such long-lived assets were fully impaired, as these permits are specific to WCS’ land and facility in Andrews County and have no salvage value as there is no alternative use for permits. Similarly, with respect to the net property and equipment, we concluded such long-lived assets were fully impaired except to the extent certain items of property and equipment had an alternate use outside of WCS’ operations; for those items of property and equipment, they were written down to estimated salvage value, primarily using dealer or auction-site quotes (Level 3 inputs) as the basis for salvage value. At June 30, 2017, the time the impairment was recognized, the salvage value for such items of property and equipment aggregated $5.7 million. As part of the terms of the fourth amendment to the purchase agreement with Rockwell, in the event of termination of the purchase agreement for any reason (including termination of the purchase agreement if completion of the sale of WCS is enjoined on anti-trust grounds), we would be entitled to receive a termination fee from Rockwell. Such termination fee (net of applicable expenses) aggregated $4 million, was received in June 2017 and is recognized as part of loss from discontinued operations in 2017 (classified as part of other income (expense), net in the table above). Other income (expense), net in the table above also includes expenses aggregating $5.8 million in 2016 and $8.7 million in 2017 related to efforts to sell WCS (principally legal fees). 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 for 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 from WCS to Valhi, in return for a deemed borrowing by Valhi under its revolving credit facility with Contran. 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,

Accounts and Other Receivables, Net	12 Months Ended
	Dec. 31, 2017
Receivables [Abstract]
Accounts and Other Receivables, Net	Note 4—Accounts and other receivables, net: December 31, 2016 2017 (In millions) Trade accounts receivable: Kronos $ 224.8 $ 301.4 CompX 10.4 10.5 BMI/LandWell 1.3 1.6 VAT and other receivables 18.6 20.7 Allowance for doubtful accounts (.8 ) (1.5 ) Total $ 254.3 $ 332.7

Inventories, Net

Inventories, Net	12 Months Ended
	Dec. 31, 2017
Inventory Disclosure [Abstract]
Inventories, Net	Note 5—Inventories, net: December 31, 2016 2017 (In millions) Raw materials: Chemicals $ 68.7 $ 106.9 Component products 2.7 2.7 Total raw materials 71.4 109.6 Work in process: Chemicals 22.3 20.8 Component products 9.0 9.8 Total in-process products 31.3 30.6 Finished products: Chemicals 196.4 192.2 Component products 3.2 2.8 Total finished products 199.6 195.0 Supplies (chemicals) 56.9 63.2 Total $ 359.2 $ 398.4

Marketable Securities

Marketable Securities	12 Months Ended
	Dec. 31, 2017
Investments Debt And Equity Securities [Abstract]
Marketable Securities	Note 6—Marketable securities: Market Cost Unrealized (In millions) December 31, 2016: Current assets $ 4.4 $ 4.4 $ — Noncurrent assets: The Amalgamated Sugar Company LLC $ 250.0 $ 250.0 $ — Other 3.5 3.7 (.2 ) Total $ 253.5 $ 253.7 $ (.2 ) 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 ) Fair Value Measurements Total Quoted Significant Significant (In millions) December 31, 2016: Current assets $ 4.4 $ — $ 4.4 $ — Noncurrent assets: The Amalgamated Sugar Company LLC $ 250.0 $ — $ — $ 250.0 Fixed income securities 2.9 — 2.9 — Mutual funds and common stocks .6 .6 — — Total $ 253.5 $ .6 $ 2.9 $ 250.0 December 31, 2017: Current assets $ 3.0 $ — $ 3.0 $ — Noncurrent assets: The Amalgamated Sugar Company LLC $ 250.0 $ — $ — $ 250.0 Fixed income securities 4.4 — 4.4 — Common stocks and exchange traded funds 1.3 1.3 — — Total $ 255.7 $ 1.3 $ 4.4 $ 250.0 Amalgamated Sugar. Prior to 2015, we transferred control of the refined sugar operations previously conducted by our wholly-owned subsidiary, The Amalgamated Sugar Company, to Snake River Sugar Company, an Oregon agricultural cooperative formed by certain sugar beet growers in Amalgamated’s areas of operations. Pursuant to the transaction, we contributed substantially all of the net assets of our refined sugar operations to The Amalgamated Sugar Company LLC, a limited liability company controlled by Snake River, on a tax-deferred basis in exchange for a non-voting ownership interest in the LLC. The cost basis of the net assets we transferred to the LLC was approximately $34 million. When we transferred control of our operations to Snake River in return for our interest in the LLC, we recognized a gain in earnings equal to the difference between $250 million (the fair value of our investment in the LLC as evidenced by its $250 million redemption price, as discussed below) and the $34 million cost basis of the net assets we contributed to the LLC, net of applicable deferred income taxes. Therefore, the cost basis of our investment in the LLC is $250 million. As part of this transaction, Snake River made certain loans to us aggregating $250 million. These loans are collateralized by our interest in the LLC. See Notes 9 and 12. We and Snake River share in distributions from the LLC up to an aggregate of $26.7 million per year (the “base” level), with a preferential 95% share going to us. To the extent the LLC’s distributions are below this base level in any given year, we are entitled to an additional 95% preferential share of any future annual LLC distributions in excess of the base level until the shortfall is recovered. Under certain conditions, we are entitled to receive additional cash distributions from the LLC. At our option, we may require the LLC to redeem our interest in the LLC, and the LLC has the right to redeem, at their option, our interest in the LLC beginning in 2027. The redemption price is generally $250 million plus the amount of certain undistributed income allocable to us. If we require the LLC to redeem our interest in the LLC, Snake River has the right to accelerate the maturity of and call our $250 million loans from Snake River. The LLC Company Agreement contains certain restrictive covenants intended to protect our interest in the LLC, including limitations on capital expenditures and additional indebtedness of the LLC. We also have the ability to temporarily take control of the LLC if our cumulative distributions from the LLC fall below specified levels, subject to satisfaction of certain conditions imposed by Snake River’s current third-party senior lenders. Prior to 2015, Snake River agreed that the annual amount of distributions we receive from the LLC would exceed the annual amount of interest payments we owe to Snake River on our $250 million in loans from Snake River by at least $1.8 million. If we receive less than the required minimum amount, certain agreements we previously made with Snake River and the LLC, including a reduction in the amount of cumulative distributions that we must receive from the LLC in order to prevent us from becoming able to temporarily take control of the LLC, would retroactively become null and void and we would be able to temporarily take control of the LLC if we so desired. Through December 31, 2017, Snake River and the LLC maintained the applicable minimum required levels of cash flows to us. We report the cash distributions received from the LLC as dividend income. We recognize distributions when they are declared by the LLC, which is generally the same month we receive them, although in certain cases distributions may be paid on the first business day of the following month. See Note 12. The amount of such future distributions we will receive from the LLC is dependent upon, among other things, the future performance of the LLC’s operations. Because we receive preferential distributions from the LLC and we have the right to require the LLC to redeem our interest for a fixed and determinable amount beginning at a fixed and determinable date, we account for our investment in the LLC as a debt security carried at fair value. The fair value of our investment is determined using Level 3 inputs based on the $250 million redemption price of our investment in the LLC as well as the amount of our debt owed to Snake River Company that is collateralized by our investment in the LLC. There has been no change to the fair value of our Amalgamated Sugar investment during 2015, 2016 or 2017. We do not expect to report a gain on the redemption at the time our LLC interest is redeemed, as the redemption price of $250 million is expected to equal the carrying value of our investment in the LLC at the time of redemption. Other. The fair value of our marketable securities are either determined using Level 1 inputs (because the securities are actively traded) or determined using Level 2 inputs (because although these securities are traded, in many cases the market is not active and the year-end valuation is generally based on the last trade of the year, which may be several days prior to December 31).

Investment in TiO2 Manufacturin

Investment in TiO2 Manufacturing Joint Venture and Other Assets	12 Months Ended
	Dec. 31, 2017
Investments In And Advances To Affiliates Schedule Of Investments [Abstract]
Investment in TiO2 Manufacturing Joint Venture and Other Assets	Note 7—Investment in TiO 2 December 31, 2016 2017 (In millions) Other assets: Land held for development $ 138.1 $ 126.6 Restricted cash equivalents 2.6 9.9 IBNR receivables 7.1 6.8 Other 16.9 26.6 Total $ 164.7 $ 169.9 Investment in TiO 2 Our Chemicals Segment owns a 50% interest in Louisiana Pigment Company, L.P. (LPC). LPC is a manufacturing joint venture whose other 50%-owner is Huntsman P&A Investments LLC (HPA). HPA is a wholly-owned subsidiary of Tioxide Group, of which Venator Materials PLC owns 100% and is the ultimate parent. LPC owns and operates a chloride-process TiO 2 plant in Lake Charles, Louisiana. We and HPA are both required to purchase one-half of the TiO 2 2 2 Years ended December 31, 2015 2016 2017 (In millions) Distributions from LPC $ 48.2 $ 35.0 $ 44.0 Contributions to LPC (41.7 ) (31.4 ) (50.0 ) Net distributions $ 6.5 $ 3.6 $ (6.0 ) Summary balance sheets of LPC are shown below: December 31, 2016 2017 (In millions) ASSETS Current assets $ 94.5 $ 104.1 Property and equipment, net 111.6 116.1 Total assets $ 206.1 $ 220.2 LIABILITIES AND PARTNERS’ EQUITY Other liabilities, primarily current $ 45.2 $ 44.4 Partners’ equity 160.9 175.8 Total liabilities and partners’ equity $ 206.1 $ 220.2 Summary income statements of LPC are shown below: Years ended December 31, 2015 2016 2017 (In millions) Revenues and other income: Kronos $ 176.5 $ 157.5 $ 157.5 Tioxide 162.5 157.9 158.3 Total 339.0 315.4 315.8 Cost and expenses: Cost of sales 338.5 314.9 315.4 General and administrative .5 .5 .4 Total 339.0 315.4 315.8 Net income $ — $ — $ — Land held for development. The land held for development relates to BMI and LandWell and is discussed in Note 1. Other. We have certain related party transactions with LPC, as more fully described in Note 17. The IBNR receivables relate to certain insurance liabilities, the risk of which we have reinsured with certain third party insurance carriers. We report the insurance liabilities related to these IBNR receivables which have been reinsured as part of noncurrent accrued insurance claims and expenses. Certain of our insurance liabilities are classified as current liabilities and the related IBNR receivables are classified with other current assets. See Notes 10 and 17. Upon acquiring a controlling interest in our Real Estate Management and Development Segment in December 2013, we recognized an indefinite-lived customer relationship intangible asset of $5.1 million for long-term contracts related to water delivery services to the City of Henderson, Nevada and various other users through a water system owned by BMI. Aggregate revenues associated with water delivered under the City of Henderson contract have historically represented approximately 70% of the Segment’s aggregate water delivery revenues. These contracts generally span many years and feature automatic renewing provisions. The initial City of Henderson water delivery contract extended for a period of 25 years, and contained an automatic renewal provision. In January 2016, the water delivery contract with the City of Henderson was amended. As part of such amendment, required minimum volumes were reduced, pricing was lowered, the automatic renewal provision of the contract was eliminated, and the contract term now runs through June 2040. The amendment to the City of Henderson water delivery contract represents an event or change in circumstance which triggered the need to perform a quantitative impairment analysis with respect to the intangible asset in the first quarter of 2016, in accordance with the guidance in ASC 350-30-35. Accordingly, as a result of a quantitative impairment analysis performed in the first quarter of 2016 we concluded that the $5.1 million contract related intangible asset primarily related to the City of Henderson water delivery contract was fully impaired as a result of the amended contract (with its reduced minimum volumes and lower pricing), and we recognized an aggregate $5.1 million contract related intangible impairment loss in 2016.

Goodwill

Goodwill	12 Months Ended
	Dec. 31, 2017
Goodwill And Intangible Assets Disclosure [Abstract]
Goodwill	Note 8—Goodwill: We have assigned goodwill to each of our reporting units (as that term is defined in ASC Topic 350-20-20, Goodwill Operating segment Chemicals Component Total (In millions) Balance at December 31, 2015, 2016 and 2017 $ 352.6 $ 27.1 $ 379.7 We test for goodwill impairment at the reporting unit level. In determining the estimated fair value of the reporting units, we use appropriate valuation techniques, such as discounted cash flows and, with respect to our Chemicals Segment, we consider quoted market prices, a Level 1 input, while discounted cash flows are a Level 3 input. We also consider control premiums when assessing fair value using quoted market prices. If the carrying amount of the reporting unit’s net assets exceeds its fair value, an impairment charge is recorded for the amount by which such carrying amount exceeds the reporting unit’s fair value (not to exceed the amount of goodwill recognized). We review goodwill for each of our reporting units for impairment during the third quarter of each year. Goodwill is also evaluated for impairment at other times whenever an event occurs or circumstances change that would more likely than not reduce the fair value of a reporting unit below its carrying value. If the fair value of an evaluated asset is less than its book value, the asset is written down to fair value. In 2015, 2016 and 2017, no goodwill impairment was indicated as part of our annual impairment review of goodwill. As permitted by GAAP, during 2015 and 2016 we used the qualitative assessment of ASC 350-20-35 for our Component Products security products reporting unit’s annual impairment test and determined it was not necessary to perform the two-step quantitative goodwill impairment test. During 2017, we used the qualitative assessment of ASC 350-20-35 for security products reporting unit’s 2017 annual impairment test using discounted cash flows to determine the estimated fair value of our security products reporting unit. Such discounted cash flows are a Level 3 input as defined by ASC 820-10-35. Prior to 2015, we recorded an aggregate $16.5 million goodwill impairment, mostly with respect to our Component Products Segment. Our consolidated gross goodwill at December 31, 2017 is $396.2 million.

Long-Term Debt

Long-Term Debt	12 Months Ended
	Dec. 31, 2017
Debt Disclosure [Abstract]
Long-Term Debt	Note 9—Long-term debt: December 31, 2016 2017 (In millions) Valhi: Snake River Sugar Company $ 250.0 $ 250.0 Contran credit facility 278.9 284.3 Total Valhi debt 528.9 534.3 Subsidiary debt: Kronos — Senior Notes — 471.1 Term loan 335.9 — Tremont — Promissory note payable 14.5 13.1 BMI — Bank note payable Western Alliance Bank — 18.8 Bank note payable Meadows Bank 8.4 — LandWell — Note payable to the City of Henderson 2.9 2.5 Other 3.2 3.3 Total subsidiary debt 364.9 508.8 Total debt 893.8 1,043.1 Less current maturities 4.5 1.6 Total long-term debt $ 889.3 $ 1,041.5 Valhi— Snake River Sugar Company Our $250 million in loans from Snake River Sugar Company are collateralized by our interest in The Amalgamated Sugar Company LLC. The loans bear interest at a weighted average fixed interest rate of 9.4% and are due in January 2027. At December 31, 2017, $37.5 million of the loans are recourse to us and the remaining $212.5 million is nonrecourse to us. Under certain conditions, Snake River has the ability to accelerate the maturity of these loans. See Note 6. Contran credit facility — We also have an unsecured revolving credit facility with Contran which, as amended, provides for borrowings from Contran of up to $360 million. The facility, as amended, bears interest at prime plus 1% (5.5% at December 31, 2017), and is due on demand, but in any event no earlier than December 31, 2019. The facility contains no financial covenants or other financial restrictions. Valhi pays an unused commitment fee quarterly to Contran on the available balance (except during periods during which Contran would be a net borrower from Valhi). The average interest rate on the credit facility for the year ended December 31, 2017 was 5.1%. During 2017 we borrowed an additional net $5.4 million and at December 31, 2017 an additional $75.7 million was available for borrowings under the amended facility. In January 2018 in conjunction with the sale of our Waste Management Segment discussed in Note 3, we acquired Contran’s $36.3 million trade receivable from WCS in return for an assumed $36.3 million borrowing by us under this facility (and we subsequently contributed such receivable to WCS’ equity). At December 31, 2017, we have approximately $39.4 million available for borrowing under the facility (after considering such January 2018 assumed borrowing). Kronos— Senior Notes On September 13, 2017, Kronos International, Inc. (“KII”), Kronos’ wholly-owned subsidiary, issued €400 million aggregate principal amount of its 3.75% Senior Secured Notes due September 15, 2025 (the “Senior Notes”), at par value ($477.6 million when issued). Kronos used $338.6 million of the net proceeds of the new Senior Notes to prepay in full the outstanding principal balance of its term loan (along with accrued and unpaid interest through the prepayment date) and $21.0 million to repay the outstanding balance under its North American revolving credit facility. The remaining net proceeds of the Senior Notes are available for Kronos’ general corporate purposes. The new Senior Notes: • bear interest at 3.75% per annum, payable semi-annually on March 15 and September 15 of each year, beginning on March 15, 2018; • have a maturity date of September 15, 2025. Prior to September 15, 2020, Kronos may redeem some or all of the Senior Notes at a price equal to 100% of the principal amount thereof, plus a “make-whole” premium (as defined in the indenture governing the Senior Notes). On or after September 15, 2020, Kronos may redeem the Senior Notes at redemption prices ranging from 102.813% of the principal amount, declining to 100% on or after September 15, 2023. In addition, on or before September 15, 2020, Kronos may redeem up to 40% of the Senior Notes with the net proceeds of certain public or private equity offerings at 103.75% of the principal amount. If Kronos experiences certain specified change of control events, it would be required to make an offer to purchase the Senior Notes at 101% of the principal amount. Kronos would also be required to make an offer to purchase a specified portion of the Senior Notes at par value in the event that it generates a certain amount of net proceeds from the sale of assets outside the ordinary course of business, and such net proceeds are not otherwise used for specified purposes within a specified time period; • are fully and unconditionally guaranteed, jointly and severally, on a senior secured basis by Kronos Worldwide, Inc. and each of its direct and indirect domestic, wholly-owned subsidiaries; • are collateralized by a first priority lien on (i) 100% of the common stock or other ownership interests of each existing and future direct domestic subsidiary of KII and the guarantors, and (ii) 65% of the voting common stock or other ownership interests and 100% of the non-voting common stock or other ownership interests of each foreign subsidiary that is directly owned by KII or any guarantor; • contain a number of covenants and restrictions which, among other things, restrict Kronos’ ability to incur or guarantee additional debt, incur liens, pay dividends or make other restricted payments, or merge or consolidate with, or sell or transfer substantially all of its assets to, another entity, and contain other provisions and restrictive covenants customary in lending transactions of this type (however, there are no ongoing financial maintenance covenants); and • contain customary default provisions, including a default under any of Kronos’ other indebtedness in excess of $50.0 million. The carrying value of the Senior Notes at December 31, 2017 is stated net of unamortized debt issuance costs of $7.5 million. Term loan – During the first six months of 2017, we made our required quarterly term loan principal payments aggregating $1.8 million on our prior term loan indebtedness. Concurrent with the issuance of our Senior Notes, in September 2017, we voluntarily prepaid in full the outstanding $338.6 million principal balance of such term loan (and such term loan facility was terminated). As a result of such prepayment, we recognized a loss on prepayment of debt aggregating $7.1 million in the third quarter of 2017 consisting principally of the write-off of unamortized debt issuance costs and original issue discount associated with the term loan of $2.7 million and $.7 million, respectively, and $3.3 million in expense related to the early termination of our interest rate swap contract discussed in Note 18. Funds for the aggregate prepayment were provided by the net proceeds from the Senior Notes discussed above. The average interest rate on the term loan borrowings for the year-to-date period ended September 13, 2017 (the pay-off date) was 4.1%. The carrying value of the term loan at December 31, 2016 is stated net of unamortized original issue discount of $.9 million and debt issuance costs of $3.6 million. Revolving North American credit facility —In June 2012, Kronos entered into a $125 million revolving bank credit facility. As amended in January 2017, the facility matures the earlier of (i) January 30, 2022 or (ii) 90 days prior to the maturity date of our term loan (or the maturity date of any new term loan constituting a permitted refinancing of the existing term loan). The issuance of the Senior Notes is a permitted refinancing of our term loan, and accordingly, the maturity date of the North American revolving credit facility is January 30, 2022. Borrowings under the revolving credit facility are available for Kronos’ general corporate purposes. Available borrowings on this facility are based on formula-determined amounts of eligible trade receivables and inventories, as defined in the agreement, of certain of Kronos’ North American subsidiaries less any outstanding letters of credit up to $15 million issued under the facility (with revolving borrowings by Kronos’ Canadian subsidiary limited to $25 million). Any amounts outstanding under the revolving credit facility bear interest, at Kronos’ option, at LIBOR plus a margin ranging from 1.5% to 2.0% or at the applicable base rate, as defined in the agreement, plus a margin ranging from .5% to 1.0%. The credit facility is collateralized by, among other things, a first priority lien on the borrowers’ trade receivables and inventories. The facility contains a number of covenants and restrictions which, among other things, restricts the borrowers’ ability to incur additional debt, incur liens, pay dividends or merge or consolidate with, or sell or transfer all or substantially all of their assets to, another entity, contains other provisions and restrictive covenants customary in lending transactions of this type and under certain conditions requires the maintenance of a specified financial covenant (fixed charge coverage ratio, as defined) to be at least 1.0 to 1.0. During 2016, we had gross borrowings and repayments of $266.2 million under this facility, and during 2017 we had gross borrowings and repayments of $253.9 million. The average interest rate on outstanding borrowings for the year-to-date period ended September 13, 2017 when the outstanding balance was repaid was 4.8%. As discussed above, in September 2017 we used a portion of the net proceeds from the Senior Notes to repay our then-outstanding principal balance of $21.0 million. At December 31, 2017 there were no outstanding borrowings under this facility, and Kronos had approximately $98.2 million available for borrowing under this revolving facility. Revolving European credit facility— Kronos’ operating subsidiaries in Germany, Belgium, Norway and Denmark have a €90 million secured revolving credit facility that, as amended in September 2017, matures in September 2022. Outstanding borrowings bear interest at the Euro Interbank Offered Rate (EURIBOR) plus 1.60% per annum. The facility is collateralized by the accounts receivable and inventories of the borrowers, plus a limited pledge of all of the other assets of the Belgian borrower. The facility contains certain restrictive covenants that, among other things, restrict the ability of the borrowers to incur debt, incur liens, pay dividends or merge or consolidate with, or sell or transfer all or substantially all of the assets to, another entity, and requires the maintenance of certain financial ratios. In addition, the credit facility contains customary cross-default provisions with respect to other debt and obligations of the borrowers, KII and its other subsidiaries. Kronos had no borrowing or repayments under this facility during 2016 and 2017 and at December 31, 2017, there were no outstanding borrowings under this facility. Kronos’ European credit facility requires the maintenance of certain financial ratios. 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 December 31, 2017 and the net debt to EBITDA financial test, the full €90 million ($107.7 million) was available for borrowing at December 31, 2017. Other . Prior to 2015, and in conjunction with the acquisition of a controlling interest of our Real Estate Management and Development Segment, Tremont issued a $19.1 million promissory note with the seller, Nevada Environmental Response Trust (“NERT”). The note bears interest at 3% per annum, with interest payable annually and all principal due in December 2023. The promissory note is collateralized by the BMI and LandWell interests acquired as well as the real property acquired from NERT as part of the transaction. The note may be prepaid at any time, without penalty. We must make mandatory prepayments on the note in specified amounts whenever we receive distributions from BMI or LandWell, or in the event we sell any of the real property acquired. We made principal prepayments of $2.6 million during 2016 and $1.5 million during 2017, under the terms of the note. In February 2017, a wholly-owned subsidiary of BMI entered into a $20.5 million loan agreement with Western Alliance Bank. The proceeds were used to refinance the $8.5 million outstanding bank note payable to Meadows Bank and to finance improvements to BMI’s water delivery system. The agreement requires semi-annual payments of principal and interest on June 1 and December 1 aggregating $1.9 million annually beginning on June 1, 2017 through the maturity date in June 2032 (except during 2017 which calls for prorated aggregate principal and interest payments of $1.6 million). The agreement bears interest at 5.34% and is collateralized by certain real property, including the water delivery system, and revenue streams under the City of Henderson water contract. The carrying value of the loan is stated net of debt issuance costs of $.9 million. Prior to 2015, LandWell entered into a $3.9 million promissory note payable to the City of Henderson, Nevada. The note requires semi-annual principal payments of $250,000 payable solely from cash received from certain specified revenue sources with any remaining unpaid balance due in October 2020, see Note 18. The loan bears interest at a 3% fixed rate. Due to the uncertainty in timing of the cash to be received from the specified revenue sources, the outstanding balance of $2.5 million is deemed to be maturing in 2020. Aggregate maturities of long-term debt at December 31, 2017 Aggregate maturities of debt at December 31, 2017 are presented in the table below. Years ending December 31, Amount (In millions) Gross amounts due each year: 2018 $ 1.6 2019 286.0 2020 4.2 2021 1.8 2022 1.8 2023 and thereafter 756.1 Subtotal 1,051.5 Less amounts representing interest on capital leases, original issue discount and debt issuance costs 8.4 Total long-term debt $ 1,043.1 We are in compliance with all of our debt covenants at December 31, 2017.

Accounts Payable and Accrued Li

Accounts Payable and Accrued Liabilities	12 Months Ended
	Dec. 31, 2017
Payables And Accruals [Abstract]
Accounts Payable and Accrued Liabilities	Note 10—Accounts payable and accrued liabilities: December 31, 2016 2017 (In millions) Accounts payable: Kronos $ 84.9 $ 107.9 CompX 2.6 2.3 BMI/LandWell 2.2 3.7 NL 2.4 1.8 Other .7 .4 Total $ 92.8 $ 116.1 Current accrued liabilities: Employee benefits $ 28.0 $ 36.3 Accrued sales discounts and rebates 22.6 14.3 Deferred income 28.7 28.3 Environmental remediation and related costs 15.3 6.8 Reserve for uncertain tax positions 3.3 — Accrued workforce reduction costs 1.2 .2 Interest .2 5.5 Interest rate swap contract 2.8 — Other 23.3 33.4 Total $ 125.4 $ 124.8 Noncurrent accrued liabilities: Reserve for uncertain tax positions $ 35.7 $ 16.5 Asset retirement obligations 1.3 1.6 Deferred income 12.6 15.7 Employee benefits 7.6 8.4 Insurance claims and expenses 9.5 9.1 Deferred payment obligation 9.0 9.3 Accrued development costs 5.0 6.1 Other 3.8 6.9 Total $ 84.5 $ 73.6 The risks associated with certain of our accrued insurance claims and expenses have been reinsured, and the related IBNR receivables are recognized as noncurrent assets to the extent the related liability is classified as a noncurrent liability. See Note 7. Our reserve for uncertain tax positions is discussed in Note 14. Prior to 2015, and in conjunction with the acquisition of a controlling interest of our Real Estate Management and Development Segment, we issued a face value $11.1 million deferred payment obligation owed to NERT that bears interest at 3% per annum, commencing in December 2023, and is collateralized by the BMI and LandWell interests acquired. The deferred payment obligation has no specified maturity date. We are required to make repayments on the deferred payment obligation, in specified amounts, whenever we receive distributions from BMI and LandWell, and we may make voluntary repayments on the deferred payment obligation at any time, in each case without any penalty, but in any case only after our promissory note payable to NERT (discussed in Note 9) has been repaid in full. For financial reporting purposes, the obligation was recorded at its acquisition date present value using a 3% discount rate from December 2023 (when it becomes interest bearing at 3%).

Employee Benefit Plans

Employee Benefit Plans	12 Months Ended
	Dec. 31, 2017
Compensation And Retirement Disclosure [Abstract]
Employee Benefit Plans	Note 11—Employee benefit plans: Defined contribution plans. Certain of our subsidiaries maintain various defined contribution pension plans for our employees worldwide. Defined contribution plan expense approximated $5.3 million in 2015, $5.6 million in 2016 and $5.5 million in 2017. Defined benefit plans. Kronos and NL sponsor various defined benefit pension plans worldwide. The benefits under our defined benefit plans are based upon years of service and employee compensation. Our funding policy is to contribute annually the minimum amount required under ERISA (or equivalent foreign) regulations plus additional amounts as we deem appropriate. We expect to contribute the equivalent of $18.9 million to all of our defined benefit pension plans during 2018. Benefit payments to plan participants out of plan assets are expected to be the equivalent of: 2018 $ 25.9 million 2019 26.5 million 2020 27.7 million 2021 27.8 million 2022 29.0 million Next 5 years 157.3 million The funded status of our U.S. defined benefit pension plans is presented in the table below. Years ended December 31, 2016 2017 (In millions) Change in projected benefit obligations (“PBO”): Balance at beginning of the year $ 66.6 $ 62.8 Interest cost 2.7 2.5 Actuarial losses (gains) (2.3 ) 1.9 Benefits paid (4.2 ) (4.2 ) Balance at end of the year $ 62.8 $ 63.0 Change in plan assets: Fair value at beginning of the year $ 47.6 $ 45.6 Actual return on plan assets 2.1 4.0 Employer contributions .1 1.1 Benefits paid (4.2 ) (4.2 ) Fair value at end of year $ 45.6 $ 46.5 Funded status $ (17.2 ) $ (16.5 ) Amounts recognized in the Consolidated Balance Sheets: Accrued pension costs: Current $ (.2 ) $ (.3 ) Noncurrent (17.0 ) (16.2 ) Total (17.2 ) (16.5 ) Accumulated other comprehensive loss— Actuarial loss 39.3 37.2 Total $ 22.1 $ 20.7 Accumulated benefit obligations (“ABO”) $ 62.8 $ 63.0 The components of our net periodic defined benefit pension benefit cost for U.S. plans are presented in the table below. The amounts shown below for the amortization of unrecognized actuarial losses for 2015, 2016 and 2017 were recognized as components of our accumulated other comprehensive income (loss) at December 31, 2014, 2015 and 2016, respectively, net of deferred income taxes and noncontrolling interest. Years ended December 31, 2015 2016 2017 (In millions) Net periodic pension benefit cost (credit) for U.S. plans: Interest cost $ 2.7 $ 2.7 $ 2.5 Expected return on plan assets (3.9 ) (3.4 ) (3.3 ) Amortization of unrecognized net 1.7 1.9 2.0 Total $ .5 $ 1.2 $ 1.2 Information concerning certain of our U.S. defined benefit pension plans (for which the ABO exceeds the fair value of plan assets as of the indicated date) is presented in the table below. . December 31, 2016 2017 (In millions) Plans for which the ABO exceeds plan assets: Projected benefit obligations $ 62.8 $ 63.0 Accumulated benefit obligations 62.8 63.0 Fair value of plan assets 45.6 46.5 The discount rate assumptions used in determining the actuarial present value of the benefit obligation for our U.S. defined benefit pension plans as of December 31, 2016 and 2017 are 3.9% and 3.5%, respectively. The impact of assumed increases in future compensation levels does not have an effect on the benefit obligation as the plans are frozen with regards to compensation. The weighted-average rate assumptions used in determining the net periodic pension cost for our U.S. defined benefit pension plans for 2015, 2016 and 2017 are presented in the table below. The impact of assumed increases in future compensation levels does not have an effect on the periodic pension cost as the plans are frozen with regards to compensation. Years ended December 31, Rate 2015 2016 2017 Discount rate 3.8 % 4.1 % 3.9 % Long-term return on plan assets 7.5 % 7.5 % 7.5 % Variances from actuarially assumed rates will result in increases or decreases in accumulated pension obligations, pension expense and funding requirements in future periods. The funded status of our foreign defined benefit pension plans is presented in the table below. Years ended December 31, 2016 2017 (In millions) Change in PBO: Balance at beginning of the year $ 578.9 $ 603.4 Service cost 9.9 11.4 Interest cost 15.1 13.4 Participants’ contributions 1.5 1.5 Actuarial loss 35.6 9.3 Plan settlement — (.3 ) Change in currency exchange rates (16.8 ) 73.7 Benefits paid (20.8 ) (21.2 ) Balance at end of the year $ 603.4 $ 691.2 Change in plan assets: Fair value at beginning of the year $ 382.5 $ 381.8 Actual return on plan assets 12.2 24.1 Employer contributions 15.3 16.0 Participants’ contributions 1.5 1.5 Change in currency exchange rates (8.9 ) 43.0 Benefits paid (20.8 ) (21.2 ) Fair value at end of year $ 381.8 $ 445.2 Funded status $ (221.6 ) $ (246.0 ) Amounts recognized in the Consolidated Balance Sheets: Pension asset $ 1.6 $ 4.2 Accrued pension costs: Noncurrent (223.2 ) (250.2 ) Total (221.6 ) (246.0 ) Accumulated other comprehensive loss: Actuarial loss 261.2 242.8 Prior service cost 1.7 1.5 Total 262.9 244.3 Total $ 41.3 $ (1.7 ) ABO $ 578.8 $ 664.7 The components of our net periodic defined benefit pension benefit cost for our foreign plans are presented in the table below. The amounts shown below for the amortization of unrecognized prior service cost and actuarial losses for 2015, 2016 and 2017 were recognized as components of our accumulated other comprehensive income (loss) at December 31, 2014, 2015 and 2016, respectively, net of deferred income taxes and noncontrolling interest. Years ended December 31, 2015 2016 2017 (In millions) Net periodic pension cost for foreign plans: Service cost $ 11.2 $ 9.9 $ 11.4 Interest cost 15.1 15.1 13.4 Settlement loss — — .1 Expected return on plan assets (17.3 ) (14.9 ) (9.7 ) Amortization of unrecognized: Prior service cost .4 .2 .3 Net actuarial loss 13.8 11.4 13.2 Total $ 23.2 $ 21.7 $ 28.7 Information concerning certain of our non-U.S. defined benefit pension plans (for which the ABO exceeds the fair value of plan assets as of the indicated date) is presented in the table below. December 31, 2016 2017 (In millions) Plans for which the ABO exceeds plan assets: Projected benefit obligations $ 541.5 $ 625.1 Accumulated benefit obligations 521.8 603.8 Fair value of plan assets 319.5 375.0 A summary of our key actuarial assumptions used to determine foreign benefit obligations as of December 31, 2016 and 2017 was: December 31, Rate 2016 2017 Discount rate 2.1 % 2.1 % Increase in future compensation levels 2.6 % 2.6 % A summary of our key actuarial assumptions used to determine foreign net periodic benefit cost for 2015, 2016 and 2017 are as follows: Years ended December 31, Rate 2015 2016 2017 Discount rate 2.5 % 2.6 % 2.1 % Increase in future compensation levels 2.6 % 2.9 % 2.6 % Long-term return on plan assets 4.6 % 3.9 % 2.5 % Variances from actuarially assumed rates will result in increases or decreases in accumulated pension obligations, pension expense and funding requirements in future periods. The amounts shown for all of our defined benefit plans for unrecognized actuarial losses and prior service cost at December 31, 2016 and 2017 have not been recognized as components of our periodic defined benefit pension cost as of those dates. These amounts will be recognized as components of our periodic defined benefit cost in future years. These amounts, net of deferred income taxes and noncontrolling interest, are recognized in our accumulated other comprehensive income (loss) at December 31, 2016 and 2017. We expect approximately $15.0 million and $.2 million of the unrecognized actuarial losses and prior service cost, respectively, will be recognized as components of our periodic defined benefit pension cost in 2018. The table below details the changes in other comprehensive income (loss) during 2015, 2016 and 2017. Years ended December 31, 2015 2016 2017 (In millions) Changes in plan assets and benefit obligations recognized in other comprehensive income (loss): Net actuarial gain (loss) $ .3 $ (38.0 ) $ 4.0 Amortization of unrecognized: Prior service cost .4 .3 .3 Net actuarial losses 15.4 13.3 15.2 Total $ 16.1 $ (24.4 ) $ 19.5 At December 31, 2016 and 2017, substantially all of the assets attributable to our U.S. plan were invested in the Combined Master Retirement Trust (CMRT), a collective investment trust sponsored by Contran to permit the collective investment by certain master trusts that fund certain employee benefits plans sponsored by Contran and certain of its affiliates. For 2015, 2016 and 2017, the long-term rate of return assumption for plan assets invested in the CMRT was 7.5%, based on the long-term asset mix of the assets of the CMRT and the expected long-term rates of return for such asset components as well as advice from Contran’s actuaries. The CMRT unit value is determined semi-monthly, and the plans have the ability to redeem all or any portion of their investment in the CMRT at any time based on the most recent semi-monthly valuation. However, the plans do not have the right to individual assets held by the CMRT and the CMRT has the sole discretion in determining how to meet any redemption request. For purposes of our plan asset disclosure, we consider the investment in the CMRT as a Level 2 input because (i) the CMRT value is established semi-monthly and the plans have the right to redeem their investment in the CMRT, in part or in whole, at any time based on the most recent value and (ii) observable inputs from Level 1 or Level 2 (or assets not subject to classification in the fair value hierarchy) were used to value approximately 92% and 93% of the assets of the CMRT at December 31, 2016 and 2017, respectively, as noted below. CMRT assets not subject to classification in the fair value hierarchy consist principally of certain investments measured at net asset value per share in accordance with ASC 820-10. The aggregate fair value of all of the CMRT assets, including funds of Contran and its other affiliates that also invest in the CMRT, and supplemental asset mix details of the CMRT are as follows: December 31, 2016 2017 (In millions) CMRT asset value $ 637.8 $ 672.4 CMRT assets comprised of: Assets not subject to fair value hierarchy 30 % 31 % Assets subject to fair value hierarchy: Level 1 54 54 Level 2 8 8 Level 3 8 7 100 % 100 % CMRT asset mix: Domestic equities, principally publicly traded 31 % 33 % International equities, principally publicly traded 22 25 Fixed income securities, principally publicly traded 36 31 Privately managed limited partnerships 5 4 Hedge funds 5 5 Other, primarily cash 1 2 100 % 100 % In determining the expected long-term rate of return on non-U.S. plan asset assumptions, we consider the long-term asset mix (e.g. equity vs. fixed income) for the assets for each of our plans and the expected long-term rates of return for such asset components. In addition, we receive third-party advice about appropriate long-term rates of return. Such assumed asset mixes are summarized below: • In Germany, the composition of our plan assets is established to satisfy the requirements of the German insurance commissioner. Our German pension plan assets represent an investment in a large collective investment fund established and maintained by Bayer AG in which several pension plans, including our German pension plan and Bayer’s pension plans, have invested. Our plan assets represent a very nominal portion of the total collective investment fund maintained by Bayer. These plan assets are a Level 3 input because there is not an active market that approximates the value of our investment in the Bayer investment fund. We determine the fair value of the Bayer plan assets based on periodic reports we receive from the managers of the Bayer plan. These periodic reports are subject to audit by the German pension regulator. • In Canada, we currently have a plan asset target allocation of 20% to 30% to equity securities and 70% to 80% to fixed income securities. We expect the long-term rate of return for such investments to average approximately 125 basis points above the applicable equity or fixed income index. The Canadian assets are Level 1 inputs because they are traded in active markets. • In Norway, we currently have a plan asset target allocation of 11% to equity securities, 79% to fixed income securities, 7% to real estate and the remainder primarily to other investments and liquid investments such as money markets. The expected long-term rate of return for such investments is approximately 6%, 3%, 5% and 7%, respectively. The majority of Norwegian plan assets are Level 1 inputs because they are traded in active markets; however approximately 10% of our Norwegian plan assets are invested in real estate and other investments not actively traded and are therefore a Level 3 input. • We also have plan assets in Belgium and the United Kingdom. The Belgian plan assets are invested in certain individualized fixed income insurance contracts for the benefit of each plan participant as required by the local regulators and are therefore a Level 3 input. The United Kingdom plan assets consist of marketable securities which are Level 1 inputs because they trade in active markets. We regularly review our actual asset allocation for each plan, and will periodically rebalance the investments in each plan to more accurately reflect the targeted allocation and/or maximize the overall long-term return when considered appropriate. The composition of our December 31, 2016 and 2017 pension plan assets by asset category and fair value level is shown in the table below. The amounts shown for plan assets invested in the CMRT include a nominal amount of cash held by our U.S. pension plan which is not part of the plan’s investment in the CMRT. Fair Value Measurements at December 31, 2016 Total Quoted Significant Significant (In millions) Germany $ 217.0 $ — $ — $ 217.0 Canada: Local currency equities 14.8 14.8 — — Foreign currency equities 19.7 19.7 — — Local currency fixed income 59.5 59.5 — — Cash and other .4 .4 — — Norway: Local currency equities 1.6 1.6 — — Foreign currency equities 4.1 4.1 — — Local currency fixed income 23.2 23.2 — — Foreign currency fixed income 5.4 5.4 — — Real estate 4.2 — — 4.2 Cash and other 9.9 8.8 1.1 US — CMRT 45.6 — 45.6 — Other 22.0 13.8 — 8.2 Total $ 427.4 $ 151.3 $ 45.6 $ 230.5 Fair Value Measurements at December 31, 2017 Total Quoted Significant Significant (In millions) Germany $ 257.9 $ — $ — $ 257.9 Canada: Local currency equities 8.4 8.4 — — Foreign currency equities 16.4 16.4 — — Local currency fixed income 81.8 81.8 — — Cash and other .3 .3 — — Norway: Local currency equities 1.8 1.8 — — Foreign currency equities 4.6 4.6 — — Local currency fixed income 21.0 21.0 — — Foreign currency fixed income 6.8 6.8 — — Real estate 4.7 — — 4.7 Cash and other 15.4 14.5 — .9 US — CMRT 46.5 — 46.5 — Other 26.1 16.0 — 10.1 Total $ 491.7 $ 171.6 $ 46.5 $ 273.6 A rollforward of the change in fair value of Level 3 assets follows. Years ended December 31, 2016 2017 (In millions) Fair value at beginning of year $ 236.2 $ 230.5 Gain on assets held at end of year 4.1 11.0 Gain on assets sold during the year — .2 Assets purchased 13.1 13.4 Assets sold (13.4 ) (13.8 ) Currency exchange rate fluctuations (9.5 ) 32.3 Fair value at end of year $ 230.5 $ 273.6 Postretirement benefits other than pensions (“OPEB”). NL, Kronos and Tremont provide certain health care and life insurance benefits for their eligible Canadian and U.S. retired employees. Certain of our Canadian employees may become eligible for such postretirement health care and life insurance benefits if they reach retirement age while working for us. In the U.S., employees who retired after 1998 are not entitled to any such benefits. The majority of all retirees are required to contribute a portion of the cost of their benefits and certain current and future retirees are eligible for reduced health care benefits at age 65. We have no OPEB plan assets, rather, we fund medical claims as they are paid. At December 31, 2017, we expect to contribute the equivalent of approximately $1.0 million to all of our OPEB plans during 2018. Benefit payments to OPEB plan participants are expected to be the equivalent of: 2018 $ 1.0 million 2019 .9 million 2020 .9 million 2021 .8 million 2022 .8 million Next 5 years 3.4 million The funded status of our OPEB plans is presented in the table below. Years ended December 31, 2016 2017 (In millions) Actuarial present value of accumulated OPEB obligations: Obligations at beginning of the year $ 12.9 $ 12.2 Service cost .1 .1 Interest cost .5 .4 Actuarial gain (.5 ) — Change in currency exchange rates .2 .5 Benefits paid from employer contributions (1.0 ) (.9 ) Obligations at end of the year 12.2 $ 12.3 Fair value of plan assets — — Funded status $ (12.2 ) $ (12.3 ) Accrued OPEB costs recognized in the Consolidated Balance Sheets: Current $ (1.1 ) $ (1.0 ) Noncurrent (11.1 ) (11.3 ) Total (12.2 ) (12.3 ) Accumulated other comprehensive (income) loss: Net actuarial losses 1.9 2.2 Prior service credit (6.8 ) (5.7 ) Total (4.9 ) (3.5 ) Total $ (17.1 ) $ (15.8 ) The amounts shown in the table above for net actuarial losses and prior service credit at December 31, 2016 and 2017 have not yet been recognized as components of our periodic OPEB cost as of those dates. These amounts will be recognized as components of our periodic OPEB cost in future years and are recognized, net of deferred income taxes, in our accumulated other comprehensive income (loss). We expect to recognize approximately $.2 million of unrecognized actuarial gains and $1.1 million of prior service credit as components of our periodic OPEB cost in 2018. The components of our periodic OPEB costs are presented in the table below. The amounts shown below for amortization of prior service credit and recognized actuarial gains for 2015, 2016 and 2017 were recognized as components of our accumulated other comprehensive income (loss) at December 31, 2014, 2015 and 2016, respectively, net of deferred income taxes and noncontrolling interest. Years ended December 31, 2015 2016 2017 (In millions) Net periodic OPEB cost (credit): Service cost $ .1 $ .1 $ .1 Interest cost .5 .5 .4 Amortization of prior service credit (1.9 ) (1.8 ) (1.1 ) Recognized net actuarial gain — (.1 ) (.2 ) Total $ (1.3 ) $ (1.3 ) $ (.8 ) The table below details the changes in other comprehensive income (loss) during 2015, 2016 and 2017. Years ended December 31, 2015 2016 2017 (In millions) Changes in benefit obligations recognized in other comprehensive income (loss): Net actuarial losses (gains) arising during the year $ .8 $ .5 $ (.2 ) Plan amendments/curtailment — (.1 ) — Amortization of unrecognized prior service credit (1.9 ) (1.8 ) (1.1 ) Total $ (1.1 ) $ (1.4 ) $ (1.3 ) A summary of our key actuarial assumptions used to determine the net benefit obligations as of December 31, 2016 and 2017 follows: December 31, 2016 2017 Healthcare inflation: Initial rate 7.0 % 6.25 – 6.5 % Ultimate rate 5.0 % 5.0 % Year of ultimate rate achievement 2021 2021 Discount rate 3.4 % 3.1 % Assumed health care cost trend rates affect the amounts we report for health care plans. A one percent change in assumed health care trend rates would not have a material effect on the net periodic OPEB cost for 2017 or on the accumulated OPEB obligations at December 31, 2017. The weighted average discount rate used in determining the net periodic OPEB cost for 2017 was 3.35% (the rate was 3.6% in 2016 and 3.4% in 2015). The weighted average rate was determined using the projected benefit obligations as of the beginning of each year. The impact of assumed increases in future compensation levels does not have a material effect on the net periodic OPEB cost as substantially all of such benefits relate solely to eligible retirees, for which compensation is not applicable. The impact of the assumed rate of return on plan assets also does not have a material effect on the net periodic OPEB cost as there were no plan assets as of December 31, 2016 or 2017. Variances from actuarially-assumed rates will result in additional increases or decreases in accumulated OPEB obligations, net periodic OPEB cost and funding requirements in future periods.

Other Income, Net

Other Income, Net	12 Months Ended
	Dec. 31, 2017
Other Income And Expenses [Abstract]
Other Income, Net	Note 12—Other income, net: Years ended December 31, 2015 2016 2017 (In millions) Securities earnings: Dividends and interest $ 26.4 $ 26.7 $ 29.4 Securities transactions, net — .5 .1 Total 26.4 27.2 29.5 Insurance recoveries 3.7 .4 .4 Currency transactions, net (.1 ) 5.5 (7.5 ) Disposal of property and equipment, net (.8 ) (.3 ) (.5 ) Business interruption insurance proceeds — 4.3 — Infrastructure reimbursement .2 .6 1.0 Other, net 2.5 1.3 2.3 Total $ 31.9 $ 39.0 $ 25.2 Dividends and interest income includes distributions from The Amalgamated Sugar Company LLC of $25.4 million in each of 2015, 2016 and 2017 (see Note 6). Infrastructure reimbursements are discussed in Note 18. Insurance recoveries relate primarily to amounts NL received from certain of its former insurance carriers, and relate principally to the recovery of prior lead pigment and asbestos litigation defense costs incurred by us. We have agreements with four 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 for lead pigment and asbestos litigation matters, we do not know the extent to which we will be successful in obtaining additional reimbursement for either defense costs or indemnity. Substantially all of $3.7 million in the insurance recoveries we recognized in 2015 relate to a settlement NL reached with one of its insurance carriers in September 2014 in which it agreed to reimburse NL for a portion of its past litigation defense costs. Any additional insurance recoveries would be recognized when the receipt is probable and the amount is determinable. See Note 18. During 2016, we recognized $3.4 million in income related to cash Kronos received from settlement of a business interruption insurance claim arising in 2014, and income of $.9 million recognized in the fourth quarter related to cash Kronos received from settlement of another business interruption insurance claim arising in 2015. No additional material amounts are expected to be received with respect to such insurance claims.

Restructuring Costs

Restructuring Costs	12 Months Ended
	Dec. 31, 2017
Restructuring And Related Activities [Abstract]
Restructuring Costs	Note 13 - Restructuring Costs In the second quarter of 2015, our Chemicals Segment initiated a restructuring plan designed to improve its long-term cost structure. A portion of such expected cost savings is planned to occur through workforce reductions. During the second, third and fourth quarters of 2015 Kronos implemented certain voluntary and involuntary workforce reductions at certain of our facilities impacting approximately 160 individuals. A substantial portion of such workforce reductions were accomplished through voluntary programs, for which eligible workforce reduction costs are recognized at the time both the employee and employer are irrevocably committed to the terms of the separation. For involuntary programs, eligible costs are recognized when management approves the separation program, the affected employees are properly notified and the costs are estimable. To the extent there is a statutorily-mandated notice period and the affected employee is not required to provide services to us during such notice period, severance and all wages during such notice period are accrued at the time of separation. To the extent the affected employee is required to provide services to us during all or a portion of such notice period, the severance (and if applicable notice period wages for any period beyond the time the affected employee is required to provide future services to us) is accrued ratably over the period in which services will be provided. As of December 31, 2015 we recognized an aggregate $21.7 million charge for such workforce reductions we had implemented through that date (substantially all of which was recognized in the second quarter of 2015), $10.8 million of which is classified in cost of sales and $10.9 million of which is classified in selling, general and administrative expense. Of the aggregate $21.7 million charge recognized in 2015, $15.9 million was paid in 2015, $4.1 million was paid in 2016 and substantially all of the remainder was paid in 2017.

Income Taxes

Income Taxes	12 Months Ended
	Dec. 31, 2017
Income Tax Disclosure [Abstract]
Income Taxes	Note 14—Income taxes: Years ended December 31, 2015 2016 2017 (In millions) Pre-tax income (loss): United States $ (3.5 ) $ (8.2 ) $ 26.7 Non-U.S. subsidiaries (38.4 ) 47.8 265.1 Total $ (41.9 ) $ 39.6 $ 291.8 Expected tax expense (benefit) at U.S. federal statutory income tax rate of 35% $ (14.7 ) $ 13.8 $ 102.1 Non-U.S. tax rates .6 (4.3 ) (13.1 ) Incremental net tax expense (benefit) on earnings and losses of non-U.S. and non-tax group companies (37.6 ) 8.2 14.8 Valuation allowance 159.0 (2.2 ) (205.4 ) Transition tax — — 76.2 Change in federal tax rate — — (77.1 ) U.S. state income taxes, net (1.1 ) 1.7 3.5 Adjustment to the reserve for uncertain tax positions, net .8 7.2 (18.2 ) Nondeductible expenses 2.5 1.9 2.2 U.S. – Canada APA — (3.4 ) — Domestic production activities deduction (1.3 ) (3.8 ) (3.8 ) Other, net (.7 ) (.5 ) (1.2 ) Provision for income taxes (benefit) $ 107.5 $ 18.6 $ (120.0 ) Components of income tax expense (benefit): Currently payable (refundable): U.S. federal and state $ 15.1 $ 35.5 $ 87.3 Non-U.S. 3.3 9.5 38.5 Total 18.4 45.0 125.8 Deferred income taxes (benefit): U.S. federal and state (55.8 ) (29.1 ) (96.9 ) Non-U.S. 144.9 2.7 (148.9 ) Total 89.1 (26.4 ) (245.8 ) Provision for income taxes (benefit) $ 107.5 $ 18.6 $ (120.0 ) Comprehensive provision for income taxes (benefit) allocable to: Income (loss) from continuing operations $ 107.5 $ 18.6 $ (120.0 ) Discontinued operations (10.1 ) (12.6 ) (67.1 ) Other comprehensive income (loss): Marketable securities (4.1 ) 2.1 2.8 Currency translation (17.3 ) (3.4 ) 31.1 Pension plans 4.1 (5.0 ) 8.6 OPEB plans (.4 ) (.5 ) (.6 ) Interest rate swap (1.7 ) .2 1.6 Total $ 78.0 $ (.6 ) $ (143.6 ) 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%. 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) current income taxes (including withholding taxes, if applicable), if any, associated with any current-year earnings of our Chemicals Segments non-U.S. subsidiaries to the extent such current-year earnings were distributed to us in the current year, (ii) 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 non-U.S. subsidiaries, which earnings are not subject to a permanent reinvestment plan, including the impact of any change in such permanent reinvestment plan, in an amount representing the current-year change in the aggregate current income tax that would be generated (including withholding taxes, if applicable) when such aggregate undistributed earnings are distributed to us, (iii) 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 (beginning in 2015) and (v) current and deferred income taxes associated with distributions and earnings from our investment in LandWell and BMI. The components of the net deferred tax liability at December 31, 2016 and 2017 are summarized below. December 31, 2016 2017 Assets Liabilities Assets Liabilities (In millions) Tax effect of temporary differences related to: Inventories $ 4.2 $ (4.0 ) $ 3.3 $ (.8 ) Marketable securities — (59.9 ) — (25.4 ) Property and equipment — (77.5 ) .1 (71.8 ) Accrued OPEB costs 3.7 — 3.0 — Accrued pension costs 52.6 — 70.9 — Currency revaluation on intercompany debt 24.0 — — — Accrued environmental liabilities 41.1 — 28.8 — Other deductible differences 25.5 — 11.7 — Other taxable differences — (18.9 ) — (14.0 ) Investments in subsidiaries and affiliates — (235.3 ) 2.7 (175.8 ) Tax on unremitted earnings of non-U.S. subsidiaries — (2.8 ) — (9.5 ) Tax loss and tax credit carryforwards 142.6 — 116.2 — Valuation allowance (173.4 ) — (2.8 ) — Adjusted gross deferred tax assets (liabilities) 120.3 (398.4 ) 233.9 (297.3 ) Netting of items by tax jurisdiction (120.3 ) (120.3 ) (114.1 ) (114.1 ) Net noncurrent deferred tax asset (liability) $ — $ (278.1 ) $ 119.8 $ (183.2 ) Tax authorities may in the future examine certain of our U.S. and non-U.S. tax returns and have or may propose tax deficiencies, including penalties and interest. Because of the inherent uncertainties involved in settlement initiatives and court and tax proceedings, we cannot guarantee that these tax matters will be resolved in our favor, and therefore our potential exposure, if any, is also uncertain. 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. Prior to June 30, 2015, and using all available evidence, we had concluded no deferred income tax asset valuation allowance was required to be recognized with respect to these net deferred income tax assets under the more-likely-than-not recognition criteria, primarily because (i) the carryforwards have an indefinite carryforward period, (ii) we utilized a portion of such carryforwards during the most recent three-year period, and (iii) we expected to utilize the remainder of the carryforwards over the long term. We had also previously indicated that facts and circumstances could change, which might in the future result in the recognition of a valuation allowance against some or all of such deferred income tax assets. However, as of June 30, 2015, and given our operating results during the second quarter of 2015 and our expectations at that time for our operating results for the remainder of 2015, we did not have sufficient positive evidence to overcome the significant negative evidence of having cumulative losses in the most recent twelve consecutive quarters in both our German and Belgian jurisdictions at June 30, 2015 (even considering that the carryforward period of our German and Belgian NOL carryforwards is indefinite, one piece of positive evidence). Accordingly, at 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. Such valuation allowance aggregated $150.3 million at June 30, 2015. We recognized an additional $8.7 million non-cash deferred income tax asset valuation allowance under the more-likely-than-not recognition criteria during the third and fourth quarters of 2015. During 2016, we recognized an aggregate $2.2 million non-cash tax benefit as the result of a net decrease in such deferred income tax asset valuation allowance, as the impact of utilizing a portion of our Chemicals Segment’s German NOLs during such period more than offset the impact of additional losses recognized by our Chemicals Segment’s Belgian operations during such period. Such valuation allowance aggregated approximately $173 million at December 31, 2016 ($153 million with respect to Germany and $20 million with respect to Belgium). During the first six months of 2017, we recognized an aggregate non-cash income tax benefit of $12.7 million as a result of a net decrease in such deferred income tax asset valuation allowance, due to the utilization of a portion of both the German and Belgian NOLs during such period. 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. Such sufficient positive evidence at June 30, 2017 included, among other things, the existence of cumulative profits in the most recent twelve consecutive quarters (Germany) or profitability in recent quarters during which such profitability was trending upward throughout such period (Belgium), the ability to demonstrate future profitability in Germany and Belgium for a sustainable period, and the indefinite carryforward period for the German and Belgian NOLs. As discussed below regarding accounting for income taxes at interim dates, a large portion ($149.9 million) of the remaining valuation allowance as of June 30, 2017 was reversed in the second quarter with the remainder reversed during the second half of 2017. 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 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 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. In addition, 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). On December 22, 2017, the 2017 Tax Act was enacted into law. This new tax legislation, among other changes, (i) reduces the U.S. Federal corporate income tax rate from 35% to 21% effective January 1, 2018; (ii) implements a territorial tax system and imposes 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) eliminates U.S. tax on future non-U.S. earnings (subject to certain exceptions); (iv) eliminates the domestic production activities deduction beginning in 2018; (v) eliminates 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) imposes a tax on global intangible low-tax income; and (viii) imposes a base erosion anti-abuse tax. 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. Under GAAP, we are required to revalue our net deferred tax asset 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 are not materially different from our temporary differences as of the enactment date, accordingly revaluation of our net deductible temporary differences is based on our net deferred tax assets as of December 31, 2017. Such revaluation resulted in a non-cash deferred income tax benefit of $77.1 million recognized 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 and, in accordance with the guidance in SAB 118, these amounts are provisional and subject to adjustment as we obtain additional information and complete our analysis in 2018. If the underlying guidance or tax laws change and such change impacts the income tax effects of the new legislation recognized at December 31, 2017, we will recognize an adjustment in the reporting period within the measurement period in which such adjustment is determined. Such measurement period ends December 22, 2018 pursuant to the guidance under SAB 118. 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. We will elect to pay such tax over an eight year period beginning in 2018, including approximately $6.1 million which will be paid in 2018 and is netted with our current receivables from affiliates (income taxes receivable from Contran) classified as a current asset in our Consolidated Balance Sheet, and the remaining $70.1 million is recorded as a noncurrent payable to affiliate (income taxes payable to Contran) classified as a noncurrent liability in our Consolidated Balance Sheet and will be paid in increments over the remainder of the eight year period. The amounts recorded as of December 31, 2017 as a result of the 2017 Tax Act represent estimates based on information currently available and, in accordance with the guidance in SAB 118, these amounts are provisional and subject to adjustment as we obtain additional information and complete our analysis in 2018. If the underlying guidance or tax laws change and such change impacts the income tax effects of the new legislation recognized at December 31, 2017 or we determine we have additional tax liabilities under other provisions of the 2017 Tax Act, including the tax on global intangible low-taxed income and the base erosion anti-abuse tax, we will recognize an adjustment in the reporting period within the measurement period in which such adjustment is determined. Such measurement period ends December 22, 2018 pursuant to the guidance under SAB 118. 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 have now determined that all of the post-1986 undistributed earnings of our European subsidiaries are not permanently reinvested. Accordingly, in the fourth quarter of 2017 we have recognized an aggregate provisional non-cash deferred income tax expense of $5.3 million for the estimated U.S. state and non-U.S. income tax and withholding tax liability attributable to all of such previously-considered permanently reinvested undistributed earnings. We are currently reviewing certain other provisions under the 2017 Tax Act that would impact our determination of the aggregate temporary differences attributable to our investments in our non-U.S. subsidiaries. We continue to assert indefinite reinvestment as it relates to our outside basis differences attributable to our investments in our non-U.S. subsidiaries other than post-1986 undistributed earnings of our European Subsidiaries and all undistributed earnings of our Canadian Subsidiary. It is possible that a change in facts and circumstances, such as a change in the expectation regarding future dispositions or acquisitions or a change in tax law, could result in a conclusion that some or all of such investments are no longer permanently reinvested. It is currently not practical for us to determine the amount of the unrecognized deferred income tax liability related to our investments in our non-U.S. subsidiaries due to the complexities associated with our organizational structure, changes in the 2017 Tax Act and the U.S. taxation of such investments in the states in which we operate. Certain U.S. deferred tax attributes of one of our non-U.S. subsidiaries, which subsidiary is treated as a dual resident for U.S. income tax purposes, were subject to various limitations. As a result, we had previously concluded that a deferred income tax asset valuation allowance was required to be recognized with respect to such subsidiary’s U.S. net deferred income tax asset because such assets did not meet the more-likely-than-not recognition criteria primarily due to (i) the various limitations regarding use of such attributes due to the dual residency; (ii) the dual resident subsidiary had a history of losses and absent distributions from our non-U.S. subsidiaries, which were previously not determinable, such subsidiary was expected to continue to generate losses; and (iii) a limited NOL carryforward period for U.S. tax purposes. Because we had concluded the likelihood of realization of such subsidiary’s net deferred income tax asset was remote, we had not previously disclosed such valuation allowance or the associated amount of the subsidiary’s net deferred income tax assets (exclusive of such valuation allowance). 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 we 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 we would agree to execute and finalize such agreements. • During 2016, Contran, as the ultimate parent of our U.S. Consolidated income tax group, executed and finalized an Advance Pricing Agreement with the U.S. Internal Revenue Service and our Canadian subsidiary executed and finalized an Advance Pricing Agreement with the Competent Authority for Canada (collectively, the “U.S.-Canada APA”) effective for tax years 2005 - 2015. Pursuant to the terms of the U.S.-Canada APA, the U.S. and Canadian tax authorities agreed to certain prior year changes to taxable income of our U.S. and Canadian subsidiaries. As a result of such agreed-upon changes, we recognized a $3.4 million current U.S. income tax benefit in 2016. In addition, our Canadian subsidiary incurred a cash income tax payment of approximately CAD $3 million (USD $2.3 million) related to the U.S.-Canada APA, but such payment was fully offset by previously provided accruals, and such income tax was paid in the third quarter of 2017. • During the third quarter of 2017, our 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. Pursuant to the terms of the Canada-Germany APA, the Canadian and German tax authorities agreed to certain prior year changes to taxable income of our Canadian and German subsidiaries. As a result of such agreed-upon changes, we reversed a significant portion of our reserve for uncertain tax positions and recognized a non-cash income tax benefit of $8.6 million related to such reversal ($8.1 million recognized in the third quarter of 2017). In addition, we recognized a $2.6 million non-cash income tax benefit related to an increase in our German NOLs and a $.6 million German cash tax refund related to the Canada-Germany APA in the third quarter of 2017. 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. 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, and we previously reached such maximum amount in the fourth quarter of 2010. Since that time and through March 31, 2015, we were not required to recognize any additional deferred income taxes with respect to our direct investment in Kronos because the deferred income taxes associated with the excess of the financial reporting carrying amount over the income tax basis of our direct investment in Kronos common stock continued to be above such cap. However, at June 30, 2015, the deferred income taxes associated with the excess of the financial reporting carrying amount over the income tax basis of our direct investment in Kronos common stock was, for the first time since the fourth quarter of 2010, below such cap, in large part due to the net loss reported by Kronos in the second quarter of 2015. During the second, third and fourth quarters of 2015, we recognized an aggregate $29.3 million non-cash income tax benefit for the reduction 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 reduction related to our equity in Kronos’ net loss in 2015. We recognized a non-cash income tax expense of $6.5 million in 2016 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 (loss) in such periods. Our provision for income taxes in 2017 includes a provisional non-cash income tax expense of $22.1 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 in such period. Such amount is included in the table of our income tax rate reconciliation for incremental net tax on earnings and losses on non-U.S. and non-tax group companies above (in addition to the other items included in such line item in the rate reconciliation, as indicated above). A portion of such increase (decrease) 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 2015, 2016 and 2017 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) includes amounts related to our equity in Kronos’ other comprehensive income (loss) items. While at the third quarter of 2017 we had reached the maximum amount of deferred income taxes we are required to recognize with respect to our direct investment in Kronos, recognition of the effects of the 2017 Tax Act , among other things, resulted in a provisional increase in the income tax basis of our direct investment in Kronos, putting 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. At December 31, 2017, we have recognized a deferred income tax liability with respect to our direct investment in Kronos of $157.6 million. The maximum amount of such deferred income tax liability we would be required to have recognized (the cap) is $173.0 million. Our deferred income tax liability with respect to our direct investment in Kronos represents an estimate and, in accordance with the guidance in SAB 118, this amount is provisional and subject to adjustment as we obtain additional information and complete our analysis of the impact of the new legislation. If such estimates change, we will recognize an adjustment in the reporting period within the measurement period in which such adjustment is determined. Such measurement period ends December 22, 2018 pursuant to the guidance under SAB 118. 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. The following table shows the changes in the amount of our uncertain tax positions (exclusive of the effect of interest and penalties) during 2015, 2016 and 2017: Years ended December 31, 2015 2016 2017 (In millions) Unrecognized tax benefits: Amount beginning of year $ 30.1 $ 28.8 $ 35.6 Net increase (decrease): Tax positions taken in prior periods (.4 ) (.6 ) (13.3 ) Tax positions taken in current period 6.4 11.0 4.5 Lapse due to applicable statute of limitations (6.0 ) (1.6 ) (8.1 ) Settlement with taxing authorities — (2.3 ) (2.3 ) Changes in currency exchange rates (1.3 ) .3 .7 Amount at end of year $ 28.8 $ 35.6 $ 17.1 If our uncertain tax positions were recognized, a benefit of $13.1 million at December 31, 2017, would affect our effective income tax rate. We currently estimate that our unrecognized tax benefits will decrease by approximately $1.8 million, excluding interest, during the next twelve months related to the expiration of certain statutes of limitations. We and Contran file income tax returns in U.S. federal and various state and local jurisdictions. We also file income tax returns in various foreign jurisdictions, principally in Germany, Canada, Belgium and Norway. Our U.S. income tax returns prior to 2014 are generally considered closed to examination by applicable tax authorities. Our foreign income tax returns are generally considered closed to examination for years prior to: 2008 for Norway; 2012 for Canada; 2013 for Germany; and 2014 for Belgium. We accrue interest and penalties on our uncertain tax positions as a component of our provision for income taxes. We accrued interest and penalties of $1.3 million during 2015 and $1.6 million during 2016 and $2.1 million during 2017, and at December 31, 2016 and 2017 we had $5.2 million and $1.5 million, respectively, accrued for interest and an immaterial amount accrued for penalties for our uncertain tax positions.

Noncontrolling Interest in Subs

Noncontrolling Interest in Subsidiaries	12 Months Ended
	Dec. 31, 2017
Noncontrolling Interest [Abstract]
Noncontrolling Interest in Subsidiaries	Note 15—Noncontrolling interest in subsidiaries: December 31, 2016 2017 (In millions) Noncontrolling interest in net assets: Kronos Worldwide $ 134.5 $ 204.9 NL Industries 44.3 71.1 CompX International 16.4 17.8 BMI 24.6 26.0 LandWell 23.7 22.5 Total $ 243.5 $ 342.3 Years ended December 31, 2015 2016 2017 (In millions) Noncontrolling interest in net income (loss) of subsidiaries: Kronos Worldwide $ (34.3 ) $ 8.3 $ 69.3 NL Industries (4.0 ) 2.6 19.7 CompX International 1.2 1.4 1.7 BMI .1 (.4 ) 3.2 LandWell (.5 ) 1.0 1.2 Total $ (37.5 ) $ 12.9 $ 95.1

Valhi Stockholder's Equity

Valhi Stockholder's Equity	12 Months Ended
	Dec. 31, 2017
Stockholders Equity Note [Abstract]
Valhi Stockholders' Equity	Note 16—Valhi stockholders’ equity: Shares of common stock Issued Treasury Outstanding (In millions) Balance at December 31, 2015, 2016 and 2017 355.3 (13.2 ) 342.0 Valhi common stock . We issued a nominal number of shares of Valhi common stock during 2015, 2016 and 2017, associated with annual stock awards to members of our board of directors. Valhi share repurchases and cancellations. Prior to 2015, our board of directors authorized the repurchase of up to 10.0 million shares of our common stock in open market transactions, including block purchases, or in privately negotiated transactions, which may include transactions with our affiliates or subsidiaries. We may purchase the stock from time to time as market conditions permit. The stock repurchase program does not include specific price targets or timetables and may be suspended at any time. Depending on market conditions, we may terminate the program prior to completion. We will use cash on hand to acquire the shares. Repurchased shares could be retired and cancelled or may be added to our treasury stock and used for employee benefit plans, future acquisitions or other corporate purposes. We did not make any such purchases under the plan in 2015, 2016 or 2017. Treasury stock. The treasury stock we reported for financial reporting purposes at December 31, 2015, 2016 and 2017 represents our proportional interest in the shares of our common stock held by NL and Kronos. NL held approximately 14.4 million shares of our common stock at December 31, 2016 and 2017. At December 31, 2016 and 2017 Kronos held an aggregate of 1.7 million shares of our common stock. Under Delaware Corporation Law, 100% (and not the proportionate interest) of a parent company’s shares held by a majority-owned subsidiary of the parent is considered to be treasury stock for voting purposes. As a result, our common shares outstanding for financial reporting purposes differ from those outstanding for legal purposes. Preferred stock. Our outstanding preferred stock consists of 5,000 shares of our Series A Preferred Stock having a liquidation preference of $133,466.75 per share, or an aggregate liquidation preference of $667.3 million. The outstanding shares of Series A Preferred Stock are held by Contran and represent all of the shares of Series A Preferred Stock we are authorized to issue. The preferred stock has a par value of $.01 per share and pays a non-cumulative cash dividend at an annual rate of 6% of the aggregate liquidation preference only when authorized and declared by our board of directors. The shares of Series A Preferred Stock are non-convertible, and the shares do not carry any redemption or call features (either at our option or the option of the holder). A holder of the Series A shares does not have any voting rights, except in limited circumstances, and is not entitled to a preferential dividend right that is senior to our shares of common stock. Upon the liquidation, dissolution or winding up of our affairs, a holder of the Series A shares is entitled to be paid a liquidation preference of $133,466.75 per share, plus an amount (if any) equal to any declared but unpaid dividends, before any distribution of assets is made to holders of our common stock. Through December 31, 2017, we have not declared any dividends on the Series A Preferred Stock since its issuance prior to 2015. Valhi long-term incentive compensation plan. Prior to 2015, our board of directors adopted a plan that provides for the award of stock to our board of directors, and up to a maximum of 200,000 shares could be awarded. Under the plan, we awarded 10,500 shares in 2015, 16,000 shares in 2016 and 12,000 shares in 2017, and at December 31, 2017 138,500 shares are available for future award under this new plan. Stock plans of subsidiaries. Kronos, NL and CompX each maintain plans which provide for the award of their common stock to their board of directors. At December 31, 2017, Kronos, NL and CompX had 155,500, 154,000 and 166,000 shares of their respective common stock available for future award under respective plans. Accumulated other comprehensive income (loss). Accumulated other comprehensive income (loss) attributable to Valhi stockholders comprises changes in equity as presented in the table below. Years ended December 31, 2015 2016 2017 (In millions) Accumulated other comprehensive income (loss) (net of tax and noncontrolling interest): Marketable securities: Balance at beginning of year $ 1.6 $ 1.6 $ 1.7 Other comprehensive income (loss): Unrealized gain arising during the year — .1 — Balance at end of year $ 1.6 $ 1.7 $ 1.7 Interest rate swap: Balance at beginning of year $ — $ (1.3 ) $ (1.2 ) Other comprehensive loss: Unrealized losses during the year (1.7 ) (1.2 ) (1.2 ) Less reclassification adjustments for amounts included in interest expense .4 1.3 2.4 Balance at end of year $ (1.3 ) $ (1.2 ) $ — Currency translation: Balance at beginning of year $ (22.6 ) $ (78.1 ) $ (88.5 ) Other comprehensive gain (loss) arising during the year (55.5 ) (10.4 ) 34.4 Balance at end of year $ (78.1 ) $ (88.5 ) $ (54.1 ) Defined benefit pension plans: Balance at beginning of year $ (132.0 ) $ (123.0 ) $ (137.0 ) Other comprehensive income (loss): Amortization of prior service cost and net (gains) losses included in net periodic pension cost 6.7 5.7 6.4 Net actuarial gain (loss) arising during the year 2.3 (19.7 ) 1.6 Balance at end of year $ (123.0 ) $ (137.0 ) $ (129.0 ) OPEB plans: Balance at beginning of year $ 4.4 $ 3.8 $ 3.1 Other comprehensive loss: Amortization of prior service credit and net losses included in net periodic OPEB cost (1.0 ) (1.0 ) (.8 ) Net actuarial gain arising during the year .4 .3 .1 Balance at end of year $ 3.8 $ 3.1 $ 2.4 Total accumulated other comprehensive income (loss): Balance at beginning of year $ (148.6 ) $ (197.0 ) $ (221.9 ) Other comprehensive income (loss) (48.4 ) (24.9 ) 42.9 Balance at end of year $ (197.0 ) $ (221.9 ) $ (179.0 ) See Note 11 for amounts related to our defined benefit pension plans and OPEB plans and Note 19 for a discussion of our interest rate swap contract.

Related Party Transactions

Related Party Transactions	12 Months Ended
	Dec. 31, 2017
Related Party Transactions [Abstract]
Related Party Transactions	Note 17—Related party transactions: We may be deemed to be controlled by Ms. Simmons and Ms. Connelly. See Note 1. Corporations that may be deemed to be controlled by or affiliated with such individuals sometimes engage in (a) intercorporate transactions such as guarantees, management and expense sharing arrangements, shared fee arrangements, joint ventures, partnerships, loans, options, advances of funds on open account, and sales, leases and exchanges of assets, including securities issued by both related and unrelated parties and (b) common investment and acquisition strategies, business combinations, reorganizations, recapitalizations, securities repurchases, and purchases and sales (and other acquisitions and dispositions) of subsidiaries, divisions or other business units, which transactions have involved both related and unrelated parties and have included transactions which resulted in the acquisition by one related party of a publicly-held noncontrolling interest in another related party. While no transactions of the type described above are planned or proposed with respect to us other than as set forth in these financial statements, we continuously consider, review and evaluate, and understand that Contran and related entities consider, review and evaluate such transactions. Depending upon the business, tax and other objectives then relevant, it is possible that we might be a party to one or more such transactions in the future. From time to time, we may have loans and advances outstanding between us and various related parties, including Contran, pursuant to term and demand notes. We generally enter into these loans and advances for cash management purposes. When we loan funds to related parties, we are generally able to earn a higher rate of return on the loan than we would earn if we invested the funds in other instruments. While certain of these loans may be of a lesser credit quality than cash equivalent instruments otherwise available to us, we believe we have evaluated the credit risks involved and appropriately reflect those credit risks in the terms of the applicable loans. When we borrow from related parties, we are generally able to pay a lower rate of interest than we would pay if we borrowed from unrelated parties. See Note 9 for more information on the Valhi and Kronos credit facilities with Contran. We paid Contran $10.3 million, $12.9 million and $14.4 million in interest on borrowings under credit facilities in 2015, 2016 and 2017, respectively. A subsidiary of Contran has guaranteed(i) Tremont’s obligation under its $13.1 million promissory note payable to NERT discussed in Note 9 and (ii) Tremont’s $9.3 million ($11.1 million face value) deferred payment obligation discussed in Note 10. The guaranty obligation would only arise upon our failure to make any required repayments. Prior to our sale of our Waste Management Segment, a subsidiary of Contran guaranteed certain third-party indebtedness of WCS. The purchaser of WCS assumed such indebtedness, and such guarantee was released. Under the terms of various intercorporate services agreements (“ISAs”) we enter into with Contran, employees of Contran provide us certain management, tax planning, financial and administrative services on a fee basis. Such charges are based upon estimates of the time devoted by the Contran employees to our affairs, and the compensation and other expenses associated with those persons. Because of the large number of companies affiliated with Contran, we believe we benefit from cost savings and economies of scale gained by not having certain management, financial and administrative staffs duplicated at all of our subsidiaries, thus allowing certain Contran employees to provide services to multiple companies but only be compensated by Contran. The net ISA fees charged to us by Contran aggregated $35.8 million in 2015, $36.5 million in 2016 and $40.0 million in 2017. We had an aggregate 30.2 million shares at December 31, 2016 and 2017 of our Kronos common stock pledged as collateral for certain debt obligations of Contran. We receive a fee from Contran for pledging these Kronos shares, determined by a formula based on the market value of the shares pledged. We received $.8 million in 2015, $1.2 million in 2016 and $2.8 million in 2017 from Contran for this pledge. Our subsidiaries Tall Pines Insurance Company and EWI RE, Inc. provide for or broker certain insurance or reinsurance policies for Contran and certain of its subsidiaries and affiliates, including us. Tall Pines purchases reinsurance for substantially all of the risks it underwrites from third party insurance carriers with an A.M. Best Company rating of generally at least A- (Excellent). Consistent with insurance industry practices, Tall Pines and EWI receive commissions from insurance and reinsurance underwriters and/or assess fees for the policies that they provide or broker to us. We received cash payments for insurance premiums from Contran and certain other affiliates not members of our consolidated financial reporting group of $5.4 million in 2015 and $5.3 million 2016 and $5.9 million in 2017. These amounts also include payments to insurers or reinsurers through EWI for the reimbursement of claims within our applicable deductible or retention ranges that such insurers or reinsurers paid to third parties on our behalf, as well as amounts for claims and risk management services and various other third-party fees and expenses incurred by the program. We expect these relationships with Tall Pines and EWI will continue in 2018. With respect to certain of such jointly-owned policies, it is possible that unusually large losses incurred by one or more insureds during a given policy period could leave the other participating companies without adequate coverage under that policy for the balance of the policy period. As a result, and in the event that the available coverage under a particular policy would become exhausted by one or more claims, Contran and certain of its subsidiaries and affiliates, including us, have entered into a loss sharing agreement under which any uninsured loss arising because the available coverage had been exhausted by one or more claims will be shared ratably amongst those entities that had submitted claims under the relevant policy. We believe the benefits in the form of reduced premiums and broader coverage associated with the group coverage for such policies justify the risk associated with the potential for any uninsured loss. Contran and certain of its subsidiaries, including us, participate in a combined information technology data recovery program that Contran provides from a data recovery center that it established. Pursuant to the program, Contran and certain of its subsidiaries, including us, as a group share information technology data recovery services. The program apportions its costs among the participating companies. We paid Contran $298,000 in 2015, $253,000 in 2016 and $258,000 in 2017 for such services. We expect that this relationship with Contran will continue in 2018. Prior to our sale of our Waste Management Segment in January 2018, WCS was required to provide certain financial assurances to the Texas government agencies with respect to certain decommissioning obligations related to our facility in West Texas. See Note 18. Such financial assurances may be provided by various means. We and certain of our affiliates provided or assisted WCS with providing such financial assurance, as specified below. After completing the sale of WCS discussed in Note 3, we and our affiliates are no longer required to provide or assist with such financial assurance. • During 2015, 2016 and 2017, a subsidiary of Contran guaranteed certain of WCS’ specified decommissioning obligations as it relates to its LLRW treatment and storage facility and RCRA permits, currently estimated at $3.9 million. Such Contran subsidiary was eligible to provide this guarantee because it met certain specified financial tests. The obligations would arise only upon a closure of our West Texas facility and our failure to perform the required decommissioning activities. During 2015, 2016 and 2017, Contran issued a letter of credit (“LOC”) under its bank credit facility to the state of Texas related to specified decommissioning obligations associated with our byproduct facility. At December 31, 2017, the amount of such LOC was $6.3 million. The LOC would only be drawn down upon the closure of our byproduct facility and our failure to perform the required decommissioning activities. We reimbursed Contran for costs related to the LOC of $.1 million in each of 2015, 2016 and 2017. Receivables from and payables to affiliates are summarized in the table below. December 31, 2016 2017 (In millions) Current receivables from affiliates: Contran: Trade items $ .4 $ 1.0 Income taxes — 19.4 Louisiana Pigment Company, L.P. — 8.9 Other 2.8 3.3 Total $ 3.2 $ 32.6 Current payables to affiliates: Louisiana Pigment Company, L.P. $ 14.7 $ 16.2 Contran income taxes 5.5 — Total $ 20.2 $ 16.2 Noncurrent payable to affiliates: Contran – income taxes $ — $ 70.1 Payables to affiliate included in long-term debt: Valhi—Contran credit facility $ 278.9 $ 284.3 Amounts payable to LPC are generally for the purchase of TiO 2 2 2

Commitments and Contingencies

Commitments and Contingencies	12 Months Ended
	Dec. 31, 2017
Commitments And Contingencies Disclosure [Abstract]
Commitments and Contingencies	Note 18—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, including the Santa Clara case, we believe liability to us that may result, if any, in this regard cannot be reasonably estimated, because: • we have 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, • no final, non-appealable adverse verdicts have ever been entered against us (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 NL was previously a party and for which NL has been dismissed without any finding of liability (subject to the final outcome of the Santa Clara case discussed below). Accordingly, neither we nor NL have 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. In addition, we have determined that liability to us which may result, if any, cannot be reasonably estimated 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 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 NL 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. However, we have also concluded that the amount of such loss cannot be reasonably at this time estimated (nor can a range of loss be reasonably estimated) because, among other things: • 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. Until the trial court has completed such recalculation, NL and the other defendants have no basis to estimate a liability; • 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 NL does not believe any individual defendant would be 100% responsible for the cost of any abatement. Accordingly, the total ultimate amount of any abatement fund, and NL’s share of any abatement is not presently known. For all of the reasons noted above, NL has concluded that the amount of loss for this matter cannot be reasonably estimated at this time (nor can any reasonable range of loss be estimated). However, as with any legal proceeding, there is no assurance that any appeal would be successful, and it is reasonably possible, based on the outcome of the appeals process and the remand proceedings in the trial court, that NL may in the future incur some liability resulting in the recognition of a loss contingency accrual that could have a material adverse impact on our results of operations, financial position and liquidity. 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 NL was ultimately overturned on appeal). We have concluded that the likelihood of a loss in this case has not reached a standard of “probable” as contemplated by ASC 450, given (i) the substantive, substantial and meritorious grounds on which the adverse verdict in the Santa Clara case will be appealed, (ii) the uniqueness of the Santa Clara verdict (i.e. no final, non-appealable verdicts have ever been rendered against NL, or any of the other former lead pigment manufacturers, based on the public nuisance theory of liability or otherwise), and (iii) the rejection of the public nuisance theory of liability as it relates to lead pigment matters in many other jurisdictions (no jurisdiction in which a plaintiff has asserted a public nuisance theory of liability has ever successfully been upheld). In addition, liability that may result, if any, cannot be reasonably estimated, as NL continues to have no basis on which an estimate of liability could be made, as discussed above. However, as with any legal proceeding, there is no assurance that any appeal would be successful, and it is reasonably possible, based on the outcome of the appeals process, that NL may in the future incur some liability resulting in the recognition of a loss contingency accrual that could have a material adverse impact on our results of operations, financial position and liquidity. 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, 2016 and 2017, receivables for recoveries were not significant. 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 2015, 2016, and 2017 are presented below. Years ended December 31, 2015 2016 2017 (In millions) Balance at the beginning of the year $ 118.5 $ 120.4 $ 122.6 Additions charged to expense, net 5.7 5.9 4.1 Payments, net (3.5 ) (3.7 ) (9.1 ) Changes in currency exchange rates and other (.3 ) — (.1 ) Balance at the end of the year $ 120.4 $ 122.6 $ 117.5 Amounts recognized in our Consolidated Balance Sheet at the end of the year: Current liabilities $ 11.7 $ 15.3 $ 6.8 Noncurrent liabilities 108.7 107.3 110.7 Total $ 120.4 $ 122.6 $ 117.5 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 December 31, 2017, NL had accrued approximately $112 million related to approximately 39 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 $154 million, including the amount currently accrued. NL believes that it is not reasonably possible to estimate the range of costs for certain sites. At December 31, 2017, 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 $5.5 million at December 31, 2017 for other environmental cleanup matters. This accrual is near the upper end of the range of our estimate of reasonably possible costs for such 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 three 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. In January 2014, we were served with a complaint in Certain Underwriters at Lloyds, London, et al v. NL Industries, Inc. In February 2014, we were served with a complaint in Zurich American Insurance Company, as successor-in-interest to Zurich Insurance Company, U.S. Branch vs. NL Industries, Inc., and The People of the State of California, acting by and through county Counsels of Santa Clara, Alameda, Los Angeles, Monterey, San Mateo, Solano and Ventura Counties and the city Attorneys of Oakland, San Diego, and San Francisco, et al 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 101 of these types of cases pending, involving a total of approximately 574 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. Without admitting any fault or wrongdoing, Kronos agreed to pay an immaterial amount in full settlement of this matter. We expect final approval of the settlement in 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. The case is now proceeding in the trial court. We believe the action is without merit, will deny all allegations of wrongdoing and liability and intend to defend against the action vigorously. Based on our quarterly status evaluation of this case, we have determined that it is not reasonably possible that a loss has been incurred in this case. 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. Other matters Concentrations of credit risk— Sales of TiO 2 accounted for approximately 92% of our Chemicals Segment’s sales in 2015, 93% in 2016 and 94% in 2017. The remaining sales result from the mining and sale of ilmenite ore (a raw material used in the sulfate pigment production process), and the manufacture and sale of iron-based water treatment chemicals and certain titanium chemical products (derived from co-products of the TiO 2 production processes). TiO 2 is generally sold to the paint, plastics and paper industries. Such markets are generally considered “quality-of-life” markets whose demand for TiO 2 is influenced by the relative economic well-being of the various geographic regions. Our Chemicals Segment sells TiO 2 to over 4,000 customers, with the top ten customers approximating 34% of our Chemicals Segment’s net sales in 2015, 33% in 2016 and 34% in 2017. In each of 2015 and 2016 one customer, Behr Process Corporation, accounted for approximately 10% of our Chemicals Segment’s net sales. The table below shows the approximate percentage of our TiO 2 sales by volume for our significant markets, Europe and North America, for the last three years. 2015 2016 2017 Europe 52% 51% 50% North America 29% 29% 31% Our Component Products Segment’s products are sold primarily in North America to original equipment manufacturers. The ten largest customers related to our Component Product’s Segment accounted for approximately 48% of our Component Products Segment’s sales in 2015, 46% in 2016, and 44% in 2017. United States Postal Service, a customer of the security products reporting unit, accounted for approximately 13% of the Component Products Segment’s total sales in 2015,14% in 2016 and 16% in 2017. Harley Davidson, also a customer of the security products reporting unit, accounted for approximately 12% in 2015 and 11% in 2016. Our Real Estate Management and Development Segment’s revenues are land sales income and water and electric delivery fees. During 2015 we had sales to four customers that each exceeded 10% of our Real Estate Management and Development Segment’s net sales: Richmond Homes of Nevada (27%), LV East Gibson, LLC (17%), and Prologis, L.P. (11%) are all relate to land sales; the City of Henderson (15%) relates to our water delivery services. During 2016 we had sales to three customers that each exceeded 10% of our Real Estate Management and Development Segment’s net sales: Grey Stone Nevada LLC (34%), Richmond Homes of Nevada (15%) and Henderson Interchange Centers LLC (12%). During 2017 we had sales to three customers that each exceeded 10% of our Real Estate Management and Development Segment’s net sales: Richmond Homes of Nevada (37%), Grey Stone Nevada LLC (22%) both related to land sales, and the City of Henderson (11%) related to water delivery sales. Long-term contracts— Our Chemicals Segment has long-term supply contracts that provide for certain of our TiO 2 feedstock requirements through 2019. The agreements require Kronos to purchase certain minimum quantities of feedstock with minimum purchase commitments aggregating approximately $383 million over the life of the contracts in years subsequent to December 31, 2017. In addition, our Chemicals Segment has other long-term supply and service contracts that provide for various raw materials and services. These agreements require Kronos to purchase certain minimum quantities or services with minimum purchase commitments aggregating approximately $128 million at December 31, 2017. Operating leases — Our Chemicals Segment’s principal German operating subsidiary leases the land under its Leverkusen TiO 2 production facility pursuant to a lease with Bayer AG that expires in 2050. The Leverkusen facility itself, which our Chemicals Segment owns and which represents approximately one-third of its current TiO 2 production capacity, is located within Bayer’s extensive manufacturing complex. Kronos periodically establishes the amount of rent for the land lease associated with the Leverkusen facility by agreement with Bayer for periods of at least two years at a time. The lease agreement provides for no formula, index or other mechanism to determine changes in the rent for such land lease; rather, any change in the rent is subject solely to periodic negotiation between Bayer and Kronos. We recognize any change in the rent based on such negotiations as part of lease expense starting from the time such change is agreed upon by both parties, as any such change in the rent is deemed “contingent rentals” under GAAP. Under the terms of various supply and services agreements majority-owned subsidiaries of Bayer provides raw materials, including chlorine, auxiliary and operating materials, utilities and services necessary to operate the Leverkusen facility. These agreements, as amended, expire in 2018 through 2021. We expect to renew these agreements prior to expiration at similar terms and conditions. We also lease various other manufacturing facilities and equipment. Some of the leases contain purchase and/or various term renewal options at fair market and fair rental values, respectively. In most cases we expect that, in the normal course of business, such leases will be renewed or replaced by other leases. Net rent expense approximated $14.7 million in 2015 and $14.3 million in 2016 and $16.3 million in 2017. At December 31, 2017, future minimum payments under non-cancellable operating leases having an initial or remaining term of more than one year were as follows: Years ending December 31, Amount (In millions) 2018 $ 8.3 2019 7.1 2020 6.1 2021 5.2 2022 3.1 2023 and thereafter 24.9 Total (1) $ 54.7 (1) Approximately $17 million of the $54.7 million aggregate future minimum rental commitments at December 31, 2017 relates to Kronos’ Leverkusen facility lease discussed above. The minimum commitment amounts for such lease included in the table above for each year through the 2050 expiration of the lease are based upon the current annual rental rate as of December 31, 2017. As discussed above, any change in the rent is based solely on negotiations between Bayer and Kronos, and any such change in the rent is deemed “contingent rentals” under GAAP which is excluded from the future minimum lease payments disclosed above. Income taxes— Prior to 2015, NL made certain pro-rata distributions to its stockholders in the form of shares of Kronos common stock. All of NL’s distributions of Kronos common stock were taxable to NL and NL recognized a taxable gain equal to the difference between the fair m

Financial Instruments

Financial Instruments	12 Months Ended
	Dec. 31, 2017
Fair Value Disclosures [Abstract]
Financial Instruments	Note 19—Financial instruments: The following table summarizes the valuation of our short-term investments and financial instruments by the ASC Topic 820 categories as of December 31, 2016 and 2017: Fair Value Measurements Total Quoted Significant Significant (In millions) Asset (liability) December 31, 2016: Marketable securities: Current $ 4.4 $ — $ 4.4 $ — Noncurrent 253.5 .6 2.9 250.0 Interest rate swap (3.1 ) $ — $ (3.1 ) $ — December 31, 2017: Marketable securities: Current $ 3.0 $ — $ 3.0 $ — Noncurrent 255.7 1.3 4.4 250.0 See Note 6 for information on how we determine the fair value of our 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. At December 31, 2017, Kronos had no currency forward contracts outstanding. We did not use hedge accounting for any of our contracts to the extent we held such contracts during 2015, 2016 and 2017. Interest rate swap contract - As part of our interest rate risk management strategy, in August 2015 Kronos entered into a pay-fixed/receive-variable interest rate swap contract with Wells Fargo Bank, N.A. to minimize our exposure to volatility in LIBOR as it relates to our forecasted outstanding variable-rate indebtedness. Under this interest rate swap, we paid a fixed rate of 2.016% per annum, payable quarterly, and received a variable rate of three-month LIBOR (subject to a 1.00% floor), also payable quarterly, in each case based on the notional amount of the swap then outstanding. The effective date of the swap contract was September 30, 2015. The notional amount of the swap started at $344.8 million and declined by $875,000 each quarter beginning December 31, 2015, with an original final maturity of the swap contract in February 2020. This swap contract was designated as a cash flow hedge and qualified as an effective hedge at inception under ASC Topic 815 in respect of our term loan indebtedness. The effective portion of changes in fair value on this interest rate swap was recorded as a component of other comprehensive income, net of deferred income taxes. Commencing in the fourth quarter of 2015, as interest expense accrued on LIBOR-based variable rate debt, we classified the amount we paid under the pay-fixed leg of the swap and the amount we receive under the receive-variable leg of the swap as part of interest expense, with the net effect that the amount of interest expense we recognize on our LIBOR-based variable rate debt each quarter, as it relates to the notional amount of the swap outstanding each quarter, to be based on a fixed rate of 2.016% per annum in lieu of the level of LIBOR prevailing during the quarter. In September 2017, in connection with the voluntary prepayment and termination of Kronos’ term loan discussed in Note 8, Kronos voluntarily terminated this swap contract, as it no longer had any exposure to volatility in respect of LIBOR. The cost to us to early terminate the swap contract was $3.3 million, which was paid to Wells Fargo concurrent with the termination. Such $3.3 million charge is classified as part of our loss on prepayment of debt discussed in Note 9. Such $3.3 million amount is also classified as part of the cash paid for interest disclosed in our Condensed Consolidated Statement of Cash Flows for the year ended December 31, 2017. During 2015, 2016 and 2017 (prior to the termination of the interest rate swap contract), a pretax unrealized loss arising during the periods of $4.4 million, $3.1 million and $2.3 million, respectively, was recognized in other comprehensive income (loss) related to the interest rate swap. During such periods, $.9 million, $3.5 million and $2.1 million, respectively, were reclassified from accumulated other comprehensive loss into earnings and are included in interest expense in our Consolidated Statements of Operations. From the inception of the swap until the swap contract termination, there had been no gains or losses recognized in earnings representing hedge ineffectiveness with respect to the interest rate swap. The fair value of the interest rate swap contract at December 31, 2016 was a $3.1 million liability including $2.9 million recognized as part of accounts payable and accrued liabilities and $.2 million recognized as part of other noncurrent liabilities in our Consolidated Balance Sheet. See Notes 9 and 10. The following table presents the financial instruments that are not carried at fair value but which require fair value disclosure as of December 31, 2016 and 2017: December 31, 2016 December 31, 2017 Carrying Fair Carrying Fair (In millions) Cash, cash equivalents and restricted cash equivalents $ 174.8 $ 174.8 $ 461.7 $ 461.7 Deferred payment obligation 9.0 9.0 9.3 9.3 Long-term debt (excluding capitalized leases): Kronos term loan $ 335.9 $ 334.6 $ — $ — Kronos Senior Notes — — 471.1 495.1 Snake River Sugar Company fixed rate loans 250.0 250.0 250.0 250.0 Valhi credit facility with Contran 278.9 278.9 284.3 284.3 Tremont promissory note payable 14.5 14.5 13.1 13.1 BMI bank note payable 8.4 8.5 18.8 19.7 LandWell note payable to the City of Henderson 2.9 2.9 2.5 2.5 At December 31, 2016, the estimated market price of Kronos’ term loan was $983 per $1,000 principal amount. At December 31, 2017, the estimated market price of Kronos’ Senior Notes was €1,034 per €1,000 principal amount. The fair value of Kronos’ term loan and 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 the Amalgamated Sugar Company LLC, which collateralizes the nonrecourse loans, (this is a Level 3 input). Fair values of variable interest rate notes receivable and debt and other fixed-rate debt are deemed to approximate book value. Due to their near-term maturities, the carrying amounts of accounts receivable and accounts payable are considered equivalent to fair value. See Notes 5 and 9.

Recent Accounting Pronouncement

Recent Accounting Pronouncements	12 Months Ended
	Dec. 31, 2017
Accounting Changes And Error Corrections [Abstract]
Recent Accounting Pronouncements	Note 20—Recent accounting pronouncements: Adopted In January 2017, the FASB issued ASU 2017-04, Intangibles Goodwill and Other (Topic 350) Simplifying the Test for Goodwill Impairment In February 2018, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) 2018-02, Income Statement – Reporting Comprehensive Income (Topic 220) Pending Adoption In May 2014, the FASB issued ASU No. 2014-09, Revenue from Contracts with Customers (Topic 606) In January 2016, the FASB issued ASU 2016-01, Financial Instruments-Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities In February 2016, the FASB issued ASU 2016-02, Leases (Topic 842) 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

Quarterly Results of Operations

Quarterly Results of Operations (Unaudited)	12 Months Ended
	Dec. 31, 2017
Disclosure Quarterly Results Of Operations Schedule Of Quarterly Results Of Operations [Abstract]
Quarterly Results of Operations (Unaudited)	Note 21—Quarterly results of operations (unaudited): Quarter ended March 31 June 30 Sept. 30 Dec. 31 (In millions, except per share data) Year ended December 31, 2016 Net sales $ 348.3 $ 387.5 $ 393.1 $ 390.5 Gross margin 48.4 64.7 85.7 101.4 Operating income .5 16.9 34.8 55.2 Net income (loss) from continuing operations $ (14.0 ) $ (2.4 ) $ 13.3 $ 24.1 Amounts attributable to Valhi stockholders: Income (loss) from continuing operations(2) $ (11.5 ) $ (3.2 ) $ 7.3 $ 15.5 Loss from discontinued operations (2) (7.9 ) (5.5 ) (4.3 ) (6.3 ) Net income (loss) $ (19.4 ) $ (8.7 ) $ 3.0 $ 9.2 Earnings per share: Income (loss) from continuing operations $ (.04 ) $ (.01 ) $ .02 $ .05 Loss from discontinued operations (.02 ) (.01 ) (.01 ) (.02 ) Basic and diluted income (loss) per share $ (.06 ) $ (.02 ) $ .01 $ .03 Year ended December 31, 2017 Net sales $ 405.3 $ 481.7 $ 496.5 $ 495.9 Gross margin 114.0 141.2 161.5 185.3 Operating income 60.1 78.8 98.6 125.4 Net income from continuing operations $ 23.5 $ 163.3 $ 62.2 $ 162.8 Amounts attributable to Valhi stockholders: Income from continuing operations(2) $ 14.4 $ 117.0 $ 44.2 $ 141.1 Income (loss) from discontinued operations (2) (1.7 ) (108.2 ) 1.7 (1.0 ) Net income $ 12.7 $ 8.8 $ 45.9 $ 140.1 Earnings per share: Income from continuing operations $ .04 $ .34 $ .13 $ .41 Loss from discontinued operations — (.31 ) — — Basic and diluted income per share $ .04 $ .03 $ .13 $ .41 (1) We recognized the following amounts during 2016: • a pre-tax charge of $5.1 million in the first quarter related to the contract related intangible asset impairment (see Note 7); • pre-tax insurance settlement gains of $2.0 million, $1.4 million and $.9 million in the first, second and fourth quarters, respectively, (see Note 14); • a current income tax benefit of $5.6 million in the third quarter and a current income tax expense of $2.2 million in the fourth quarter related to the execution and finalization of an Advance Pricing Agreement between the U.S. and Canada (see Note 14); • non-cash deferred income tax expense (benefit) of $2.9 million and $(.8) million and $(4.3) million in the second, third and fourth quarters, respectively, as the result of a net decrease in our deferred income tax asset valuation allowance related to Kronos’ German and Belgian operations (see Note 14); • non-cash income tax expense of $7.2 million related to an increase in our reserve for uncertain tax positions, mostly in the fourth quarter; and • net income in the fourth quarter includes an immaterial out of period adjustment of $4.3 million ($2.7 million net of income tax) to correct for transaction costs related to the proposed sale of our Waste Management Segment incurred in earlier periods. (2) We recognized the following amounts during 2017: • non-cash deferred income tax benefit of $5.0 million, $157.6 million, $7.8 million and $16.3 million in the first, second, third and fourth quarters, respectively, as a result of the reversal of our deferred income tax asset valuation allowances associated with our Chemicals Segment’s German and Belgian operations, (see Note 14); • a pre-tax charge of $7.1 million in the third quarter related to the loss on prepayment of debt (see Note 9); • aggregate income tax benefit of $11.8 million related to the execution and finalization of an Advance Pricing Agreement between Canada and Germany, mostly in the third quarter; • provisional current income tax expense of $76.2 million in the fourth quarter as a result of the 2017 Tax Act for the one-time repatriation tax imposed on the post-1986 undistributed earnings of our non-U.S. subsidiaries (see Note 14); • non-cash deferred income tax benefit of $77.1 million in the fourth quarter related to the revaluation of our net deferred income tax liability resulting from the reduction in the U.S. federal corporate income • non-cash deferred income tax benefit of $18.7 million in the fourth quarter as a result of the reversal of our deferred income tax asset valuation allowance related to certain U.S. deferred income tax assets of one of our non-U.S. subsidiaries (which subsidiary is treated as a dual resident for U.S. income tax purposes) (see Note 14); and • aggregate provisional non-cash deferred income tax expense of $5.3 million in the fourth quarter related to a change in our conclusions regarding our permanent reinvestment assertion with respect to the post-1986 undistributed earnings of our European subsidiaries (see Note 14). The sum of the quarterly per share amounts may not equal the annual per share amounts due to relative changes in the weighted average number of shares used in the per share computations.

Summary of Significant Accoun29

Summary of Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2017
Accounting Policies [Abstract]
Nature of our Business	Nature of our business. Valhi, Inc. (NYSE: VHI) is primarily a holding company. We operate through our wholly-owned and majority-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 MKT: 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.
Organization	Organization. We are majority owned by a wholly-owned subsidiary of Contran Corporation (“Contran”), which owns approximately 93% of our outstanding common stock at December 31, 2017. 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. Unless otherwise indicated, references in this report to “we,” “us” or “our” refer to Valhi, Inc. and its subsidiaries, taken as a whole.
Management's Estimates	Management’s estimates. The preparation of our Consolidated Financial Statements in conformity with accounting principles generally accepted in the United States of America (“GAAP”), requires us to make estimates and assumptions that affect the reported amounts of our assets and liabilities and disclosures of contingent assets and liabilities at each balance sheet date and the reported amounts of our revenues and expenses during each reporting period. Actual results may differ significantly from previously-estimated amounts under different assumptions or conditions.
Principles of Consolidation	Principles of consolidation. Our Consolidated Financial Statements include the financial position, results of operations and cash flows of Valhi and our majority-owned and wholly-owned subsidiaries. We eliminate all material intercompany accounts and balances. Changes in ownership are accounted for as equity transactions with no gain or loss recognized on the transaction unless there is a change in control. See Note 3.
Foreign Currency Translation	Foreign currency translation. The financial statements of our foreign subsidiaries are translated to U.S. dollars. The functional currency of our foreign subsidiaries is generally the local currency of the country. Accordingly, we translate the assets and liabilities at year-end rates of exchange, while we translate their revenues and expenses at average exchange rates prevailing during the year. We accumulate the resulting translation adjustments in stockholders’ equity as part of accumulated other comprehensive income (loss), net of related deferred income taxes and noncontrolling interest. We recognize currency transaction gains and losses in income.
Derivatives and Hedging Activities	Derivatives and hedging activities. We recognize derivatives as either an asset or liability measured at fair value in accordance with Accounting Standards Codification (“ASC”) Topic 815, Derivatives and Hedging . We recognize the effect of changes in the fair value of derivatives either in net income or other comprehensive income (loss), depending on the intended use of the derivative. See Note 19.
Cash and Cash Equivalents	Cash and cash equivalents. We classify bank time deposits and government and commercial notes and bills with original maturities of three months or less as cash equivalents.
Restricted Cash and Cash Equivalents	Restricted cash and cash equivalents. We classify cash and cash equivalents that have been segregated or are otherwise limited in use as restricted. Such restrictions principally include amounts pledged as collateral with respect to performance obligations or letters of credit required by regulatory agencies for various environmental remediation sites, cash held in escrow under various hold-back agreements with third-party homebuilders associated with our Real Estate Management and Development Segment, cash pledged under debt agreement covenants and cash held in trust by our insurance brokerage subsidiary pending transfer to the applicable insurance or reinsurance carrier. To the extent the restricted amount relates to a recognized liability, we classify the restricted amount as current or noncurrent according to the corresponding liability. To the extent the restricted amount does not relate to a recognized liability, we classify restricted cash as a current asset. Restricted cash and cash equivalents classified as a current asset are presented separately on our Consolidated Balance Sheets, and restricted cash and cash equivalents classified as a noncurrent asset are presented as a component of other assets on our Consolidated Balance Sheets, as disclosed in Note 7.
Marketable Securities and Securities Transactions	Marketable securities and securities transactions. We carry marketable debt and equity securities at fair value. ASC Topic 820, Fair Value Measurements and Disclosures , establishes a consistent framework for measuring fair value and (with certain exceptions) this framework is generally applied to all financial statement items required to be measured at fair value. The standard requires fair value measurements to be classified and disclosed in one of the following three categories: • Level 1 —Unadjusted quoted prices in active markets that are accessible at the measurement date for identical, unrestricted assets or liabilities; • Level 2 —Quoted prices in markets that are not active, or inputs which are observable, either directly or indirectly, for substantially the full term of the assets or liability; and • Level 3 —Prices or valuation techniques that require inputs that are both significant to the fair value measurement and unobservable. We recognize unrealized and realized gains and losses on trading securities in income. We accumulate unrealized gains and losses on available-for-sale securities as part of accumulated other comprehensive income (loss), net of related deferred income taxes and noncontrolling interest. Realized gains and losses are based on specific identification of the securities sold.
Accounts Receivable	Accounts receivable. We provide an allowance for doubtful accounts for known and estimated potential losses arising from our sales to customers based on a periodic review of these accounts.
Inventories and Cost of Sales	Inventories and cost of sales. We state inventories at the lower of cost or net realizable value. We generally base inventory costs for all inventory categories on average cost that approximates the first-in, first-out method. Inventories include the costs for raw materials, the cost to manufacture the raw materials into finished goods and overhead. Depending on the inventory’s stage of completion, our manufacturing costs can include the costs of packing and finishing, utilities, maintenance, depreciation, shipping and handling, and salaries and benefits associated with our manufacturing process. We allocate fixed manufacturing overhead costs based on normal production capacity. Unallocated overhead costs resulting from periods with abnormally low production levels are charged to expense as incurred. As inventory is sold to third parties, we recognize the cost of sales in the same period the sale occurs. We periodically review our inventory for estimated obsolescence or instances when inventory is no longer marketable for its intended use, and we record any write-down equal to the difference between the cost of inventory and its estimated net realizable value based on assumptions about alternative uses, market conditions and other factors.
Land Held for Development	Land held for development. Land held for development relates to BMI and LandWell, for which we gained a controlling interest prior to 2015. The primary asset of LandWell is certain real property in Henderson, Nevada some of which we are developing for residential lots in a master planned community. Land held for development was recorded at the estimated acquisition date fair value based on a value per developable acre at the time of purchase. Development costs, including infrastructure improvements, real estate taxes, capitalized interest and other costs, some of which may be allocated, are capitalized during the period incurred. We allocate costs to each parcel sold on a pro-rata basis associated with the relevant development activity, and the costs allocated to parcels expected to be sold within one year are presented separately in current assets on our Consolidated Balance Sheets. As land parcels are sold, costs of land sales, including land and development costs, are allocated based on specific identification, relative sales value, square footage or a combination of these methods. All sales and marketing activities and general overhead are charged to selling, general and administrative expense as incurred.
Investment In TiO2 Manufacturing Joint Venture	Investment in TiO 2 We account for our investment in a 50%-owned manufacturing joint venture by the equity method. Distributions received from such investee are classified for statement of cash flow purposes using the “nature of distribution” approach under ASC Topic 230. See Note 7.
Goodwill and Other Intangible Assets; Amortization Expense	Goodwill and other intangible assets; amortization expense. Goodwill represents the excess of cost over fair value of individual net assets acquired in business combinations. Goodwill is not subject to periodic amortization. We amortize other intangible assets by the straight-line method over their estimated lives and state them net of accumulated amortization. We evaluate goodwill for impairment, annually, or when events or changes in circumstances indicate the carrying value may not be recoverable. We evaluate other intangible assets for impairment when events or changes in circumstances indicate the carrying value may not be recoverable. See Note 8.
Property and Equipment; Depreciation Expense	Property and equipment; depreciation expense. We state property and equipment at acquisition cost, including capitalized interest on borrowings during the actual construction period of major capital projects. In 2015, 2016 and 2017 we capitalized $1.1 million, $1.0 million and $2.2 million, respectively, of interest costs. We compute depreciation of property and equipment for financial reporting purposes (including mining equipment) principally by the straight-line method over the estimated useful lives of the assets as follows: Asset Useful lives Buildings and improvements 10 to 40 years Machinery and equipment 3 to 20 years Mine development costs Units-of-production We use accelerated depreciation methods for income tax purposes, as permitted. Upon the sale or retirement of an asset, we remove the related cost and accumulated depreciation from the accounts and recognize any gain or loss in income currently. We expense expenditures for maintenance, repairs and minor renewals as incurred that do not improve or extend the life of the assets, including planned major maintenance. We have a governmental concession with an unlimited term to operate our ilmenite mines in Norway. Mining properties consist of buildings and equipment used in our Norwegian ilmenite mining operations. While we own the land and ilmenite reserves associated with the mining operations, such land and reserves were acquired for nominal value and we have no material asset recognized for the land and reserves related to our mining operations. We perform impairment tests when events or changes in circumstances indicate the carrying value may not be recoverable. We consider all relevant factors. We perform the impairment test by comparing the estimated future undiscounted cash flows (exclusive of interest expense) associated with the asset or asset group to the asset’s net carrying value to determine if a write-down to fair value is required.
Long-Term Debt	Long-term debt. We state long-term debt net of any unamortized original issue premium, discount or deferred financing costs (other than deferred financing costs associated with revolving credit facilities, which are recognized as an asset). We classify amortization of deferred financing costs and any premium or discount associated with the issuance of indebtedness as interest expense, and compute amortization by either the interest method or the straight-line method over the term of the applicable issue.
Employee Benefit Plans	Employee benefit plans. Accounting and funding policies for our retirement plans are described in Note 11.
Income Taxes	Income taxes. We and our qualifying subsidiaries are members of Contran’s consolidated U.S federal income tax group (the “Contran Tax Group”). We and certain of our qualifying subsidiaries also file consolidated income tax returns with Contran in various U.S. state jurisdictions. As a member of the Contran Tax Group, we are jointly and severally liable for the federal income tax liability of Contran and the other companies included in the Contran Tax Group for all periods in which we are included in the Contran Tax Group. See Note 17. As a member of the Contran Tax Group, we are a party to a tax sharing agreement which provides that we compute our tax provision for U.S. income taxes on a separate-company basis using the tax elections made by Contran. Pursuant to the tax sharing agreement, we make payments to or receive payments from Contran in amounts we would have paid to or received from the U.S. Internal Revenue Service or the applicable state tax authority had we not been a member of the Contran Tax Group. We made net cash payments for income taxes to Contran of $2.5 million in 2015, $10.7 million in 2016 and $38.9 million in 2017. We recognize deferred income tax assets and liabilities for the expected future tax consequences of temporary differences between the income tax and financial reporting carrying amounts of assets and liabilities, including investments in our subsidiaries and affiliates who are not members of the Contran Tax Group and undistributed earnings of non-U.S. subsidiaries which are not deemed to be permanently reinvested. At December 31, 2017, none of the post-1986 undistributed earnings of our European subsidiaries and none of the undistributed earnings of our Canadian Subsidiary, are subject to permanent reinvestment plans. It is currently not practical for us to determine the amount of the unrecognized deferred income tax liability related to our investments in our non-U.S. subsidiaries which are permanently reinvested due to the complexities associated with our organizational structure, changes in the Tax Cuts and Jobs Act (2017 Tax Act) enacted on December 22, 2017, and the U.S. taxation of such investments in the states in which we operate. We are currently reviewing certain other provisions under the 2017 Tax Act that would impact our determination of the aggregate temporary differences attributable to our investments in our non-U.S. subsidiaries. Deferred income tax assets and liabilities for each tax-paying jurisdiction in which we operate are netted and presented as either a noncurrent deferred income tax asset or liability, as applicable. We periodically evaluate our deferred tax assets in the various taxing jurisdictions in which we operate and adjust any related valuation allowance based on the estimate of the amount of such deferred tax assets that we believe does not meet the more-likely-than-not recognition criteria. We account for the tax effects of a change in tax law as a component of the income tax provision related to continuing operations in the period of enactment, including the tax effects of any deferred income taxes originally established through a financial statement component other than continuing operations (i.e. other comprehensive income). Changes in applicable income tax rates over time as a result of changes in tax law, or times in which a deferred income tax asset valuation allowance is initially recognized in one year and subsequently reversed in a later year, can give rise to “stranded” tax effects in accumulated other comprehensive income in which the net accumulated income tax (benefit) remaining in accumulated other comprehensive income does not correspond to the then-applicable income tax rate applied to the pre-tax amount which resides in accumulated other comprehensive income. As permitted by GAAP, our accounting policy is to remove any such stranded tax effect remaining in accumulated other comprehensive income, by recognizing an offset to our provision for income taxes related to continuing operations, only at the time when there is no remaining pre-tax amount in accumulated other comprehensive income. For accumulated other comprehensive income related to marketable securities, this would occur whenever we would have no available-for-sale marketable securities for which unrealized gains and losses are recognized through other comprehensive income. For accumulated other comprehensive income related to currency translation, this would occur only upon the sale or complete liquidation of one of our non-U.S. subsidiaries. For defined pension benefit plans and OPEB plans, this would occur whenever one of our subsidiaries which previously sponsored a defined benefit pension or OPEB plan had terminated such a plan and had no future obligation or plan asset associated with such a plan. We record a reserve for uncertain tax positions where we believe it is more-likely-than-not our position will not prevail with the applicable tax authorities. The amount of the benefit associated with our uncertain tax positions that we recognize is limited to the largest amount for which we believe the likelihood of realization is greater than 50%. We accrue penalties and interest on the difference between tax positions taken on our tax returns and the amount of benefit recognized for financial reporting purposes. We classify our reserves for uncertain tax positions in a separate current or noncurrent liability, depending on the nature of the tax position. See Note 14.
Environmental Remediation and Related Costs	Environmental remediation and related costs. We record liabilities related to environmental remediation and related costs when estimated future expenditures are probable and reasonably estimable. We adjust these accruals as further information becomes available to us or as circumstances change. We generally do not discount estimated future expenditures to their present value due to the uncertainty of the timing of the ultimate payout. We recognize any recoveries of remediation costs from other parties when we deem their receipt to be probable. We expense any environmental remediation related legal costs as incurred. At December 31, 2016 and 2017, we had not recognized any material receivables for recoveries. See Note 18.
Net Sales	Net sales. We record sales when products are shipped and title and other risks and rewards of ownership have passed to the customer. We include amounts charged to customers for shipping and handling costs in net sales. We state sales net of price, early payment and distributor discounts and volume rebates. 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). Certain retail land sales of our Real Estate Management and Development Segment are recognized under the percentage-of-completion method when we are required to complete property development and improvements after title passes to the buyer and when all of the criteria of ASC 970-605-30 are met. Under such method, revenues 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. Such costs incurred and total estimated costs include amounts specifically identifiable with the parcels sold as well as certain development costs for the entire residential/planned community which are allocated to the parcels sold under applicable GAAP. Other retail land sales are generally recognized by the full accrual method of accounting at closing, in which title passes to the customer and we have no remaining contractual obligations to the buyer.
Selling, General and Administrative Expenses; Shipping and Handling Costs; Advertising Costs; Research and Development Costs	Selling, general and administrative expenses; shipping and handling costs; advertising costs; research and development costs. Selling, general and administrative expenses include costs related to marketing, sales, distribution, shipping and handling, research and development, legal, environmental remediation and administrative functions such as accounting, treasury and finance, and includes costs for salaries and benefits not associated with our manufacturing process, travel and entertainment, promotional materials and professional fees. Shipping and handling costs of our Chemicals Segment were approximately $ 87 million in 2015, $90 million in 2016 and $101 million in 2017. Shipping and handling costs of our Component Products and Waste Management Segments are not material. We expense advertising and research, development and certain sales technical support costs as incurred. Advertising costs were approximately $1 million in each of 2015, 2016 and 2017. Research, development and certain sales technical support costs were approximately $16 million in 2015, $13 million in 2016 and $20 million in 2017.
Recent accounting pronouncements	Adopted In January 2017, the FASB issued ASU 2017-04, Intangibles Goodwill and Other (Topic 350) Simplifying the Test for Goodwill Impairment In February 2018, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) 2018-02, Income Statement – Reporting Comprehensive Income (Topic 220) Pending Adoption In May 2014, the FASB issued ASU No. 2014-09, Revenue from Contracts with Customers (Topic 606) In January 2016, the FASB issued ASU 2016-01, Financial Instruments-Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities In February 2016, the FASB issued ASU 2016-02, Leases (Topic 842) 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

Summary of Significant Accoun30

Summary of Significant Accounting Policies (Tables)	12 Months Ended
	Dec. 31, 2017
Accounting Policies [Abstract]
Computation of Depreciation of Property and Equipment	Property and equipment; depreciation expense. We state property and equipment at acquisition cost, including capitalized interest on borrowings during the actual construction period of major capital projects. In 2015, 2016 and 2017 we capitalized $1.1 million, $1.0 million and $2.2 million, respectively, of interest costs. We compute depreciation of property and equipment for financial reporting purposes (including mining equipment) principally by the straight-line method over the estimated useful lives of the assets as follows: Asset Useful lives Buildings and improvements 10 to 40 years Machinery and equipment 3 to 20 years Mine development costs Units-of-production

Business and Geographic Segme31

Business and Geographic Segments (Tables)	12 Months Ended
	Dec. 31, 2017
Segment Reporting [Abstract]
Holding Percentage of Subsidiaries	Business segment Entity % controlled at Chemicals Kronos 80 % Component products CompX 87 % Real estate management and development BMI and LandWell 63% - 77 %
Segment Operating Performance	Years ended December 31, 2015 2016 2017 (In millions) Net sales: Chemicals $ 1,348.8 $ 1,364.3 $ 1,729.0 Component products 109.0 108.9 112.0 Real estate management and development 30.1 46.2 38.4 Total net sales $ 1,487.9 $ 1,519.4 $ 1,879.4 Cost of sales: Chemicals $ 1,158.5 $ 1,109.2 $ 1,172.1 Component products 75.6 73.8 77.2 Real estate management and development 25.4 36.2 28.1 Total cost of sales $ 1,259.5 $ 1,219.2 $ 1,277.4 Gross margin: Chemicals $ 190.3 $ 255.1 $ 556.9 Component products 33.4 35.1 34.8 Real estate management and development 4.7 10.0 10.3 Total gross margin $ 228.4 $ 300.2 $ 602.0 Operating income: Chemicals $ 7.1 $ 91.0 $ 341.1 Component products 14.0 15.6 15.2 Real estate management and development — .8 6.6 Total operating income 21.1 107.4 362.9 General corporate items: Securities earnings 26.4 27.2 29.5 Insurance recoveries 3.7 .4 .4 General expenses, net (39.5 ) (37.3 ) (35.0 ) Loss on prepayment of debt — — (7.1 ) Interest expense (53.6 ) (58.1 ) (58.9 ) Income (loss) from continuing operations before income taxes $ (41.9 ) $ 39.6 $ 291.8 Years ended December 31, 2015 2016 2017 (In millions) Depreciation and amortization: Chemicals $ 44.3 $ 42.6 $ 43.4 Component products 3.5 3.7 3.7 Waste management (1) 19.3 18.3 8.9 Real estate management and development 2.8 2.9 3.0 Total $ 69.9 $ 67.5 $ 59.0 Capital expenditures: Chemicals $ 47.5 $ 53.0 $ 64.3 Component products 4.2 3.2 2.8 Waste management (1) 1.7 .7 .9 Real estate management and development 1.2 2.0 3.3 Total $ 54.6 $ 58.9 $ 71.3
Total Assets Held by Business Segments	December 31, 2015 2016 2017 (In millions) Total assets: Operating segments: Chemicals $ 1,617.6 $ 1,548.9 $ 2,190.5 Component products 88.7 97.9 104.9 Waste management (1) 231.9 228.6 52.0 Real estate management and 232.9 200.9 206.9 Corporate and eliminations 366.3 366.9 353.2 Total $ 2,537.4 $ 2,443.2 $ 2,907.5 (1)
Net Sales by Point of Origin and Point of Destination	Years ended December 31, 2015 2016 2017 (In millions) Net sales—point of origin: United States $ 796.9 $ 819.3 $ 992.3 Germany 690.0 699.8 918.6 Canada 216.9 257.7 309.2 Belgium 198.8 187.4 279.9 Norway 183.5 164.8 216.4 Eliminations (598.2 ) (609.6 ) (837.0 ) Total $ 1,487.9 $ 1,519.4 $ 1,879.4 Net sales—point of destination: North America $ 559.0 $ 566.8 $ 668.3 Europe 700.9 698.2 899.2 Asia and other 228.0 254.4 311.9 Total $ 1,487.9 $ 1,519.4 $ 1,879.4
Net Property and Equipment by Segment	December 31, 2015 2016 2017 (In millions) Net property and equipment: United States $ 77.0 $ 76.2 $ 80.8 Germany 229.9 223.7 259.2 Canada 55.0 60.5 69.0 Norway 71.9 75.5 81.7 Belgium 81.8 80.1 98.0 Total $ 515.6 $ 516.0 $ 588.7

Business Combinations, Dispos32

Business Combinations, Dispositions and Related Transactions (Tables)	12 Months Ended
	Dec. 31, 2017
Waste Control Specialists
Schedule of Operations of Disposed Waste Management Segment	Selected financial data for the operations of the disposed Waste Management Segment is presented below. Current assets consist principally of trade accounts receivable. December 31, 2016 2017 (In millions) ASSETS Current assets $ 17.2 $ 11.2 Operating permits 42.9 — Restricted cash 21.6 27.2 Property and equipment, net 138.5 6.0 Other noncurrent assets 8.4 7.6 Total noncurrent assets 211.4 40.8 Total assets $ 228.6 $ 52.0 LIABILITIES Current portion of long-term debt $ 3.3 $ 3.0 Payable to Contran 31.4 36.1 Other current liabilities 11.4 8.2 Total current liabilities 46.1 47.3 Long-term debt 67.9 65.0 Deferred income taxes (3.1 ) (43.8 ) Accrued noncurrent closure and post closure costs 29.4 31.7 Total noncurrent liabilities 94.2 52.9 Total liabilities $ 140.3 $ 100.2 Years ended December 31, 2015 2016 2017 (In millions) Net sales $ 45.0 $ 47.4 $ 75.4 Operating loss $ (26.5 ) $ (26.2 ) $ (167.1 ) Other income (expense), net .1 (5.3 ) (4.4 ) Interest expense, net (5.4 ) (5.1 ) (4.8 ) Loss before taxes (31.8 ) (36.6 ) (176.3 ) Income tax benefit (10.1 ) (12.6 ) (67.1 ) Net loss $ (21.7 ) $ (24.0 ) $ (109.2 ) Net cash provided by (used in) operating activities (12.2 ) (10.7 ) 18.1 Net cash provided by (used in) investing activities .8 (2.7 ) (3.4 )

Accounts and Other Receivable33

Accounts and Other Receivables, Net (Tables)	12 Months Ended
	Dec. 31, 2017
Receivables [Abstract]
Components of Accounts and Other Receivables	December 31, 2016 2017 (In millions) Trade accounts receivable: Kronos $ 224.8 $ 301.4 CompX 10.4 10.5 BMI/LandWell 1.3 1.6 VAT and other receivables 18.6 20.7 Allowance for doubtful accounts (.8 ) (1.5 ) Total $ 254.3 $ 332.7

Inventories, Net (Tables)

Inventories, Net (Tables)	12 Months Ended
	Dec. 31, 2017
Inventory Disclosure [Abstract]
Inventories, Net	December 31, 2016 2017 (In millions) Raw materials: Chemicals $ 68.7 $ 106.9 Component products 2.7 2.7 Total raw materials 71.4 109.6 Work in process: Chemicals 22.3 20.8 Component products 9.0 9.8 Total in-process products 31.3 30.6 Finished products: Chemicals 196.4 192.2 Component products 3.2 2.8 Total finished products 199.6 195.0 Supplies (chemicals) 56.9 63.2 Total $ 359.2 $ 398.4

Marketable Securities (Tables)

Marketable Securities (Tables)	12 Months Ended
	Dec. 31, 2017
Investments Debt And Equity Securities [Abstract]
Schedule of Marketable Securities	Market Cost Unrealized (In millions) December 31, 2016: Current assets $ 4.4 $ 4.4 $ — Noncurrent assets: The Amalgamated Sugar Company LLC $ 250.0 $ 250.0 $ — Other 3.5 3.7 (.2 ) Total $ 253.5 $ 253.7 $ (.2 ) 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 )
Schedule of Marketable Securities and Fair Value Measurements	Fair Value Measurements Total Quoted Significant Significant (In millions) December 31, 2016: Current assets $ 4.4 $ — $ 4.4 $ — Noncurrent assets: The Amalgamated Sugar Company LLC $ 250.0 $ — $ — $ 250.0 Fixed income securities 2.9 — 2.9 — Mutual funds and common stocks .6 .6 — — Total $ 253.5 $ .6 $ 2.9 $ 250.0 December 31, 2017: Current assets $ 3.0 $ — $ 3.0 $ — Noncurrent assets: The Amalgamated Sugar Company LLC $ 250.0 $ — $ — $ 250.0 Fixed income securities 4.4 — 4.4 — Common stocks and exchange traded funds 1.3 1.3 — — Total $ 255.7 $ 1.3 $ 4.4 $ 250.0

Investment in TiO2 Manufactur36

Investment in TiO2 Manufacturing Joint Venture and Other Assets (Tables)	12 Months Ended
	Dec. 31, 2017
Investment in TiO2 Manufacturing Joint Venture and Other Assets	December 31, 2016 2017 (In millions) Other assets: Land held for development $ 138.1 $ 126.6 Restricted cash equivalents 2.6 9.9 IBNR receivables 7.1 6.8 Other 16.9 26.6 Total $ 164.7 $ 169.9
LPC
Summary of Net Distributions, Balance Sheets and Income Statements	The components of our net distributions (contributions) from LPC are shown in the table below. Years ended December 31, 2015 2016 2017 (In millions) Distributions from LPC $ 48.2 $ 35.0 $ 44.0 Contributions to LPC (41.7 ) (31.4 ) (50.0 ) Net distributions $ 6.5 $ 3.6 $ (6.0 ) Summary balance sheets of LPC are shown below: December 31, 2016 2017 (In millions) ASSETS Current assets $ 94.5 $ 104.1 Property and equipment, net 111.6 116.1 Total assets $ 206.1 $ 220.2 LIABILITIES AND PARTNERS’ EQUITY Other liabilities, primarily current $ 45.2 $ 44.4 Partners’ equity 160.9 175.8 Total liabilities and partners’ equity $ 206.1 $ 220.2 Summary income statements of LPC are shown below: Years ended December 31, 2015 2016 2017 (In millions) Revenues and other income: Kronos $ 176.5 $ 157.5 $ 157.5 Tioxide 162.5 157.9 158.3 Total 339.0 315.4 315.8 Cost and expenses: Cost of sales 338.5 314.9 315.4 General and administrative .5 .5 .4 Total 339.0 315.4 315.8 Net income $ — $ — $ —

Goodwill (Tables)

Goodwill (Tables)	12 Months Ended
	Dec. 31, 2017
Goodwill And Intangible Assets Disclosure [Abstract]
Changes in Carrying Amount of Goodwill	The Component Products Segment goodwill is assigned to the security products reporting unit within that operating segment. Operating segment Chemicals Component Total (In millions) Balance at December 31, 2015, 2016 and 2017 $ 352.6 $ 27.1 $ 379.7

Long-Term Debt (Tables)

Long-Term Debt (Tables)	12 Months Ended
	Dec. 31, 2017
Debt Disclosure [Abstract]
Long-Term Debt	December 31, 2016 2017 (In millions) Valhi: Snake River Sugar Company $ 250.0 $ 250.0 Contran credit facility 278.9 284.3 Total Valhi debt 528.9 534.3 Subsidiary debt: Kronos — Senior Notes — 471.1 Term loan 335.9 — Tremont — Promissory note payable 14.5 13.1 BMI — Bank note payable Western Alliance Bank — 18.8 Bank note payable Meadows Bank 8.4 — LandWell — Note payable to the City of Henderson 2.9 2.5 Other 3.2 3.3 Total subsidiary debt 364.9 508.8 Total debt 893.8 1,043.1 Less current maturities 4.5 1.6 Total long-term debt $ 889.3 $ 1,041.5
Aggregate Maturities of Long-Term Debt	Aggregate maturities of debt at December 31, 2017 are presented in the table below. Years ending December 31, Amount (In millions) Gross amounts due each year: 2018 $ 1.6 2019 286.0 2020 4.2 2021 1.8 2022 1.8 2023 and thereafter 756.1 Subtotal 1,051.5 Less amounts representing interest on capital leases, original issue discount and debt issuance costs 8.4 Total long-term debt $ 1,043.1

Accounts Payable and Accrued 39

Accounts Payable and Accrued Liabilities (Tables)	12 Months Ended
	Dec. 31, 2017
Payables And Accruals [Abstract]
Schedule of Accounts Payable and Accrued Liabilities	December 31, 2016 2017 (In millions) Accounts payable: Kronos $ 84.9 $ 107.9 CompX 2.6 2.3 BMI/LandWell 2.2 3.7 NL 2.4 1.8 Other .7 .4 Total $ 92.8 $ 116.1 Current accrued liabilities: Employee benefits $ 28.0 $ 36.3 Accrued sales discounts and rebates 22.6 14.3 Deferred income 28.7 28.3 Environmental remediation and related costs 15.3 6.8 Reserve for uncertain tax positions 3.3 — Accrued workforce reduction costs 1.2 .2 Interest .2 5.5 Interest rate swap contract 2.8 — Other 23.3 33.4 Total $ 125.4 $ 124.8 Noncurrent accrued liabilities: Reserve for uncertain tax positions $ 35.7 $ 16.5 Asset retirement obligations 1.3 1.6 Deferred income 12.6 15.7 Employee benefits 7.6 8.4 Insurance claims and expenses 9.5 9.1 Deferred payment obligation 9.0 9.3 Accrued development costs 5.0 6.1 Other 3.8 6.9 Total $ 84.5 $ 73.6

Employee Benefit Plans (Tables)

Employee Benefit Plans (Tables)	12 Months Ended
	Dec. 31, 2017
Defined Benefit Pension Plans
Schedule of Defined Benefit Plan Expected Future Payments	Benefit payments to plan participants out of plan assets are expected to be the equivalent of: 2018 $ 25.9 million 2019 26.5 million 2020 27.7 million 2021 27.8 million 2022 29.0 million Next 5 years 157.3 million
Schedule of Changes in Plan Assets and Benefit Obligations Recognized in Other Comprehensive Income (Loss)	The table below details the changes in other comprehensive income (loss) during 2015, 2016 and 2017. Years ended December 31, 2015 2016 2017 (In millions) Changes in plan assets and benefit obligations recognized in other comprehensive income (loss): Net actuarial gain (loss) $ .3 $ (38.0 ) $ 4.0 Amortization of unrecognized: Prior service cost .4 .3 .3 Net actuarial losses 15.4 13.3 15.2 Total $ 16.1 $ (24.4 ) $ 19.5
Composition of Pension Plan Assets	The composition of our December 31, 2016 and 2017 pension plan assets by asset category and fair value level is shown in the table below. The amounts shown for plan assets invested in the CMRT include a nominal amount of cash held by our U.S. pension plan which is not part of the plan’s investment in the CMRT. Fair Value Measurements at December 31, 2016 Total Quoted Significant Significant (In millions) Germany $ 217.0 $ — $ — $ 217.0 Canada: Local currency equities 14.8 14.8 — — Foreign currency equities 19.7 19.7 — — Local currency fixed income 59.5 59.5 — — Cash and other .4 .4 — — Norway: Local currency equities 1.6 1.6 — — Foreign currency equities 4.1 4.1 — — Local currency fixed income 23.2 23.2 — — Foreign currency fixed income 5.4 5.4 — — Real estate 4.2 — — 4.2 Cash and other 9.9 8.8 1.1 US — CMRT 45.6 — 45.6 — Other 22.0 13.8 — 8.2 Total $ 427.4 $ 151.3 $ 45.6 $ 230.5 Fair Value Measurements at December 31, 2017 Total Quoted Significant Significant (In millions) Germany $ 257.9 $ — $ — $ 257.9 Canada: Local currency equities 8.4 8.4 — — Foreign currency equities 16.4 16.4 — — Local currency fixed income 81.8 81.8 — — Cash and other .3 .3 — — Norway: Local currency equities 1.8 1.8 — — Foreign currency equities 4.6 4.6 — — Local currency fixed income 21.0 21.0 — — Foreign currency fixed income 6.8 6.8 — — Real estate 4.7 — — 4.7 Cash and other 15.4 14.5 — .9 US — CMRT 46.5 — 46.5 — Other 26.1 16.0 — 10.1 Total $ 491.7 $ 171.6 $ 46.5 $ 273.6
Schedule of Rollforward of Change in Fair Value of Level 3 Assets	A rollforward of the change in fair value of Level 3 assets follows. Years ended December 31, 2016 2017 (In millions) Fair value at beginning of year $ 236.2 $ 230.5 Gain on assets held at end of year 4.1 11.0 Gain on assets sold during the year — .2 Assets purchased 13.1 13.4 Assets sold (13.4 ) (13.8 ) Currency exchange rate fluctuations (9.5 ) 32.3 Fair value at end of year $ 230.5 $ 273.6
Defined Benefit Pension Plans | U.S.
Schedule of Funded Status	The funded status of our U.S. defined benefit pension plans is presented in the table below. Years ended December 31, 2016 2017 (In millions) Change in projected benefit obligations (“PBO”): Balance at beginning of the year $ 66.6 $ 62.8 Interest cost 2.7 2.5 Actuarial losses (gains) (2.3 ) 1.9 Benefits paid (4.2 ) (4.2 ) Balance at end of the year $ 62.8 $ 63.0 Change in plan assets: Fair value at beginning of the year $ 47.6 $ 45.6 Actual return on plan assets 2.1 4.0 Employer contributions .1 1.1 Benefits paid (4.2 ) (4.2 ) Fair value at end of year $ 45.6 $ 46.5 Funded status $ (17.2 ) $ (16.5 ) Amounts recognized in the Consolidated Balance Sheets: Accrued pension costs: Current $ (.2 ) $ (.3 ) Noncurrent (17.0 ) (16.2 ) Total (17.2 ) (16.5 ) Accumulated other comprehensive loss— Actuarial loss 39.3 37.2 Total $ 22.1 $ 20.7 Accumulated benefit obligations (“ABO”) $ 62.8 $ 63.0
Components of Net Periodic Defined Benefit Cost (Credit)	The components of our net periodic defined benefit pension benefit cost for U.S. plans are presented in the table below. The amounts shown below for the amortization of unrecognized actuarial losses for 2015, 2016 and 2017 were recognized as components of our accumulated other comprehensive income (loss) at December 31, 2014, 2015 and 2016, respectively, net of deferred income taxes and noncontrolling interest. Years ended December 31, 2015 2016 2017 (In millions) Net periodic pension benefit cost (credit) for U.S. plans: Interest cost $ 2.7 $ 2.7 $ 2.5 Expected return on plan assets (3.9 ) (3.4 ) (3.3 ) Amortization of unrecognized net 1.7 1.9 2.0 Total $ .5 $ 1.2 $ 1.2
Schedule of Plans for which Accumulated Benefit Obligations Exceeds Plan Assets	Information concerning certain of our U.S. defined benefit pension plans (for which the ABO exceeds the fair value of plan assets as of the indicated date) is presented in the table below. December 31, 2016 2017 (In millions) Plans for which the ABO exceeds plan assets: Projected benefit obligations $ 62.8 $ 63.0 Accumulated benefit obligations 62.8 63.0 Fair value of plan assets 45.6 46.5
Summary of Actuarial Assumptions Used to Determine the Benefit Obligation and Net Benefit Cost	The weighted-average rate assumptions used in determining the net periodic pension cost for our U.S. defined benefit pension plans for 2015, 2016 and 2017 are presented in the table below. The impact of assumed increases in future compensation levels does not have an effect on the periodic pension cost as the plans are frozen with regards to compensation. Years ended December 31, Rate 2015 2016 2017 Discount rate 3.8 % 4.1 % 3.9 % Long-term return on plan assets 7.5 % 7.5 % 7.5 %
Defined Benefit Pension Plans | Foreign
Schedule of Funded Status	The funded status of our foreign defined benefit pension plans is presented in the table below. Years ended December 31, 2016 2017 (In millions) Change in PBO: Balance at beginning of the year $ 578.9 $ 603.4 Service cost 9.9 11.4 Interest cost 15.1 13.4 Participants’ contributions 1.5 1.5 Actuarial loss 35.6 9.3 Plan settlement — (.3 ) Change in currency exchange rates (16.8 ) 73.7 Benefits paid (20.8 ) (21.2 ) Balance at end of the year $ 603.4 $ 691.2 Change in plan assets: Fair value at beginning of the year $ 382.5 $ 381.8 Actual return on plan assets 12.2 24.1 Employer contributions 15.3 16.0 Participants’ contributions 1.5 1.5 Change in currency exchange rates (8.9 ) 43.0 Benefits paid (20.8 ) (21.2 ) Fair value at end of year $ 381.8 $ 445.2 Funded status $ (221.6 ) $ (246.0 ) Amounts recognized in the Consolidated Balance Sheets: Pension asset $ 1.6 $ 4.2 Accrued pension costs: Noncurrent (223.2 ) (250.2 ) Total (221.6 ) (246.0 ) Accumulated other comprehensive loss: Actuarial loss 261.2 242.8 Prior service cost 1.7 1.5 Total 262.9 244.3 Total $ 41.3 $ (1.7 ) ABO $ 578.8 $ 664.7
Components of Net Periodic Defined Benefit Cost (Credit)	The components of our net periodic defined benefit pension benefit cost for our foreign plans are presented in the table below. Years ended December 31, 2015 2016 2017 (In millions) Net periodic pension cost for foreign plans: Service cost $ 11.2 $ 9.9 $ 11.4 Interest cost 15.1 15.1 13.4 Settlement loss — — .1 Expected return on plan assets (17.3 ) (14.9 ) (9.7 ) Amortization of unrecognized: Prior service cost .4 .2 .3 Net actuarial loss 13.8 11.4 13.2 Total $ 23.2 $ 21.7 $ 28.7
Schedule of Plans for which Accumulated Benefit Obligations Exceeds Plan Assets	Information concerning certain of our non-U.S. defined benefit pension plans (for which the ABO exceeds the fair value of plan assets as of the indicated date) is presented in the table below. December 31, 2016 2017 (In millions) Plans for which the ABO exceeds plan assets: Projected benefit obligations $ 541.5 $ 625.1 Accumulated benefit obligations 521.8 603.8 Fair value of plan assets 319.5 375.0
Summary of Actuarial Assumptions Used to Determine the Benefit Obligation and Net Benefit Cost	A summary of our key actuarial assumptions used to determine foreign benefit obligations as of December 31, 2016 and 2017 was: December 31, Rate 2016 2017 Discount rate 2.1 % 2.1 % Increase in future compensation levels 2.6 % 2.6 % A summary of our key actuarial assumptions used to determine foreign net periodic benefit cost for 2015, 2016 and 2017 are as follows: Years ended December 31, Rate 2015 2016 2017 Discount rate 2.5 % 2.6 % 2.1 % Increase in future compensation levels 2.6 % 2.9 % 2.6 % Long-term return on plan assets 4.6 % 3.9 % 2.5 %
CMRT
Composition of Pension Plan Assets	The CMRT unit value is determined semi-monthly, and the plans have the ability to redeem all or any portion of their investment in the CMRT at any time based on the most recent semi-monthly valuation. However, the plans do not have the right to individual assets held by the CMRT and the CMRT has the sole discretion in determining how to meet any redemption request. For purposes of our plan asset disclosure, we consider the investment in the CMRT as a Level 2 input because (i) the CMRT value is established semi-monthly and the plans have the right to redeem their investment in the CMRT, in part or in whole, at any time based on the most recent value and (ii) observable inputs from Level 1 or Level 2 (or assets not subject to classification in the fair value hierarchy) were used to value approximately 92% and 93% of the assets of the CMRT at December 31, 2016 and 2017, respectively, as noted below. CMRT assets not subject to classification in the fair value hierarchy consist principally of certain investments measured at net asset value per share in accordance with ASC 820-10. The aggregate fair value of all of the CMRT assets, including funds of Contran and its other affiliates that also invest in the CMRT, and supplemental asset mix details of the CMRT are as follows: December 31, 2016 2017 (In millions) CMRT asset value $ 637.8 $ 672.4 CMRT assets comprised of: Assets not subject to fair value hierarchy 30 % 31 % Assets subject to fair value hierarchy: Level 1 54 54 Level 2 8 8 Level 3 8 7 100 % 100 % CMRT asset mix: Domestic equities, principally publicly traded 31 % 33 % International equities, principally publicly traded 22 25 Fixed income securities, principally publicly traded 36 31 Privately managed limited partnerships 5 4 Hedge funds 5 5 Other, primarily cash 1 2 100 % 100 %
OPEB
Schedule of Defined Benefit Plan Expected Future Payments	Postretirement benefits other than pensions (“OPEB”). NL, Kronos and Tremont provide certain health care and life insurance benefits for their eligible Canadian and U.S. retired employees. Certain of our Canadian employees may become eligible for such postretirement health care and life insurance benefits if they reach retirement age while working for us. In the U.S., employees who retired after 1998 are not entitled to any such benefits. The majority of all retirees are required to contribute a portion of the cost of their benefits and certain current and future retirees are eligible for reduced health care benefits at age 65. We have no OPEB plan assets, rather, we fund medical claims as they are paid. At December 31, 2017, we expect to contribute the equivalent of approximately $1.0 million to all of our OPEB plans during 2018. Benefit payments to OPEB plan participants are expected to be the equivalent of: 2018 $ 1.0 million 2019 .9 million 2020 .9 million 2021 .8 million 2022 .8 million Next 5 years 3.4 million
Schedule of Funded Status	The funded status of our OPEB plans is presented in the table below. Years ended December 31, 2016 2017 (In millions) Actuarial present value of accumulated OPEB obligations: Obligations at beginning of the year $ 12.9 $ 12.2 Service cost .1 .1 Interest cost .5 .4 Actuarial gain (.5 ) — Change in currency exchange rates .2 .5 Benefits paid from employer contributions (1.0 ) (.9 ) Obligations at end of the year 12.2 $ 12.3 Fair value of plan assets — — Funded status $ (12.2 ) $ (12.3 ) Accrued OPEB costs recognized in the Consolidated Balance Sheets: Current $ (1.1 ) $ (1.0 ) Noncurrent (11.1 ) (11.3 ) Total (12.2 ) (12.3 ) Accumulated other comprehensive (income) loss: Net actuarial losses 1.9 2.2 Prior service credit (6.8 ) (5.7 ) Total (4.9 ) (3.5 ) Total $ (17.1 ) $ (15.8 )
Components of Net Periodic Defined Benefit Cost (Credit)	The components of our periodic OPEB costs are presented in the table below. The amounts shown below for amortization of prior service credit and recognized actuarial gains for 2015, 2016 and 2017 were recognized as components of our accumulated other comprehensive income (loss) at December 31, 2014, 2015 and 2016, respectively, net of deferred income taxes and noncontrolling interest. Years ended December 31, 2015 2016 2017 (In millions) Net periodic OPEB cost (credit): Service cost $ .1 $ .1 $ .1 Interest cost .5 .5 .4 Amortization of prior service credit (1.9 ) (1.8 ) (1.1 ) Recognized net actuarial gain — (.1 ) (.2 ) Total $ (1.3 ) $ (1.3 ) $ (.8 )
Summary of Actuarial Assumptions Used to Determine the Benefit Obligation and Net Benefit Cost	A summary of our key actuarial assumptions used to determine the net benefit obligations as of December 31, 2016 and 2017 follows: December 31, 2016 2017 Healthcare inflation: Initial rate 7.0 % 6.25 – 6.5 % Ultimate rate 5.0 % 5.0 % Year of ultimate rate achievement 2021 2021 Discount rate 3.4 % 3.1 %
Schedule of Changes in Plan Assets and Benefit Obligations Recognized in Other Comprehensive Income (Loss)	The table below details the changes in other comprehensive income (loss) during 2015, 2016 and 2017. Years ended December 31, 2015 2016 2017 (In millions) Changes in benefit obligations recognized in other comprehensive income (loss): Net actuarial losses (gains) arising during the year $ .8 $ .5 $ (.2 ) Plan amendments/curtailment — (.1 ) — Amortization of unrecognized prior service credit (1.9 ) (1.8 ) (1.1 ) Total $ (1.1 ) $ (1.4 ) $ (1.3 )

Other Income, Net (Tables)

Other Income, Net (Tables)	12 Months Ended
	Dec. 31, 2017
Other Income And Expenses [Abstract]
Schedule of Components of Other Income	Years ended December 31, 2015 2016 2017 (In millions) Securities earnings: Dividends and interest $ 26.4 $ 26.7 $ 29.4 Securities transactions, net — .5 .1 Total 26.4 27.2 29.5 Insurance recoveries 3.7 .4 .4 Currency transactions, net (.1 ) 5.5 (7.5 ) Disposal of property and equipment, net (.8 ) (.3 ) (.5 ) Business interruption insurance proceeds — 4.3 — Infrastructure reimbursement .2 .6 1.0 Other, net 2.5 1.3 2.3 Total $ 31.9 $ 39.0 $ 25.2

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2017
Income Tax Disclosure [Abstract]
Component of Income Taxes Expenses	Years ended December 31, 2015 2016 2017 (In millions) Pre-tax income (loss): United States $ (3.5 ) $ (8.2 ) $ 26.7 Non-U.S. subsidiaries (38.4 ) 47.8 265.1 Total $ (41.9 ) $ 39.6 $ 291.8 Expected tax expense (benefit) at U.S. federal statutory income tax rate of 35% $ (14.7 ) $ 13.8 $ 102.1 Non-U.S. tax rates .6 (4.3 ) (13.1 ) Incremental net tax expense (benefit) on earnings and losses of non-U.S. and non-tax group companies (37.6 ) 8.2 14.8 Valuation allowance 159.0 (2.2 ) (205.4 ) Transition tax — — 76.2 Change in federal tax rate — — (77.1 ) U.S. state income taxes, net (1.1 ) 1.7 3.5 Adjustment to the reserve for uncertain tax positions, net .8 7.2 (18.2 ) Nondeductible expenses 2.5 1.9 2.2 U.S. – Canada APA — (3.4 ) — Domestic production activities deduction (1.3 ) (3.8 ) (3.8 ) Other, net (.7 ) (.5 ) (1.2 ) Provision for income taxes (benefit) $ 107.5 $ 18.6 $ (120.0 ) Components of income tax expense (benefit): Currently payable (refundable): U.S. federal and state $ 15.1 $ 35.5 $ 87.3 Non-U.S. 3.3 9.5 38.5 Total 18.4 45.0 125.8 Deferred income taxes (benefit): U.S. federal and state (55.8 ) (29.1 ) (96.9 ) Non-U.S. 144.9 2.7 (148.9 ) Total 89.1 (26.4 ) (245.8 ) Provision for income taxes (benefit) $ 107.5 $ 18.6 $ (120.0 ) Comprehensive provision for income taxes (benefit) allocable to: Income (loss) from continuing operations $ 107.5 $ 18.6 $ (120.0 ) Discontinued operations (10.1 ) (12.6 ) (67.1 ) Other comprehensive income (loss): Marketable securities (4.1 ) 2.1 2.8 Currency translation (17.3 ) (3.4 ) 31.1 Pension plans 4.1 (5.0 ) 8.6 OPEB plans (.4 ) (.5 ) (.6 ) Interest rate swap (1.7 ) .2 1.6 Total $ 78.0 $ (.6 ) $ (143.6 )
Components of Net Deferred Tax Asset (Liability)	The components of the net deferred tax liability at December 31, 2016 and 2017 are summarized below. December 31, 2016 2017 Assets Liabilities Assets Liabilities (In millions) Tax effect of temporary differences related to: Inventories $ 4.2 $ (4.0 ) $ 3.3 $ (.8 ) Marketable securities — (59.9 ) — (25.4 ) Property and equipment — (77.5 ) .1 (71.8 ) Accrued OPEB costs 3.7 — 3.0 — Accrued pension costs 52.6 — 70.9 — Currency revaluation on intercompany debt 24.0 — — — Accrued environmental liabilities 41.1 — 28.8 — Other deductible differences 25.5 — 11.7 — Other taxable differences — (18.9 ) — (14.0 ) Investments in subsidiaries and affiliates — (235.3 ) 2.7 (175.8 ) Tax on unremitted earnings of non-U.S. subsidiaries — (2.8 ) — (9.5 ) Tax loss and tax credit carryforwards 142.6 — 116.2 — Valuation allowance (173.4 ) — (2.8 ) — Adjusted gross deferred tax assets (liabilities) 120.3 (398.4 ) 233.9 (297.3 ) Netting of items by tax jurisdiction (120.3 ) (120.3 ) (114.1 ) (114.1 ) Net noncurrent deferred tax asset (liability) $ — $ (278.1 ) $ 119.8 $ (183.2 )
Changes in Uncertain Tax Positions	The following table shows the changes in the amount of our uncertain tax positions (exclusive of the effect of interest and penalties) during 2015, 2016 and 2017: Years ended December 31, 2015 2016 2017 (In millions) Unrecognized tax benefits: Amount beginning of year $ 30.1 $ 28.8 $ 35.6 Net increase (decrease): Tax positions taken in prior periods (.4 ) (.6 ) (13.3 ) Tax positions taken in current period 6.4 11.0 4.5 Lapse due to applicable statute of limitations (6.0 ) (1.6 ) (8.1 ) Settlement with taxing authorities — (2.3 ) (2.3 ) Changes in currency exchange rates (1.3 ) .3 .7 Amount at end of year $ 28.8 $ 35.6 $ 17.1

Noncontrolling Interest in Su43

Noncontrolling Interest in Subsidiaries (Tables)	12 Months Ended
	Dec. 31, 2017
Noncontrolling Interest [Abstract]
Noncontrolling Interest in Net Assets of Subsidiaries	December 31, 2016 2017 (In millions) Noncontrolling interest in net assets: Kronos Worldwide $ 134.5 $ 204.9 NL Industries 44.3 71.1 CompX International 16.4 17.8 BMI 24.6 26.0 LandWell 23.7 22.5 Total $ 243.5 $ 342.3
Schedule of Noncontrolling Interest in Net Income (Loss) of Subsidiaries	Years ended December 31, 2015 2016 2017 (In millions) Noncontrolling interest in net income (loss) of subsidiaries: Kronos Worldwide $ (34.3 ) $ 8.3 $ 69.3 NL Industries (4.0 ) 2.6 19.7 CompX International 1.2 1.4 1.7 BMI .1 (.4 ) 3.2 LandWell (.5 ) 1.0 1.2 Total $ (37.5 ) $ 12.9 $ 95.1

Valhi Stockholder's Equity (Tab

Valhi Stockholder's Equity (Tables)	12 Months Ended
	Dec. 31, 2017
Stockholders Equity Note [Abstract]
Schedule of Common Stock Outstanding	Shares of common stock Issued Treasury Outstanding (In millions) Balance at December 31, 2015, 2016 and 2017 355.3 (13.2 ) 342.0
Accumulated Other Comprehensive Income (Loss)	Accumulated other comprehensive income (loss) attributable to Valhi stockholders comprises changes in equity as presented in the table below. Years ended December 31, 2015 2016 2017 (In millions) Accumulated other comprehensive income (loss) (net of tax and noncontrolling interest): Marketable securities: Balance at beginning of year $ 1.6 $ 1.6 $ 1.7 Other comprehensive income (loss): Unrealized gain arising during the year — .1 — Balance at end of year $ 1.6 $ 1.7 $ 1.7 Interest rate swap: Balance at beginning of year $ — $ (1.3 ) $ (1.2 ) Other comprehensive loss: Unrealized losses during the year (1.7 ) (1.2 ) (1.2 ) Less reclassification adjustments for amounts included in interest expense .4 1.3 2.4 Balance at end of year $ (1.3 ) $ (1.2 ) $ — Currency translation: Balance at beginning of year $ (22.6 ) $ (78.1 ) $ (88.5 ) Other comprehensive gain (loss) arising during the year (55.5 ) (10.4 ) 34.4 Balance at end of year $ (78.1 ) $ (88.5 ) $ (54.1 ) Defined benefit pension plans: Balance at beginning of year $ (132.0 ) $ (123.0 ) $ (137.0 ) Other comprehensive income (loss): Amortization of prior service cost and net (gains) losses included in net periodic pension cost 6.7 5.7 6.4 Net actuarial gain (loss) arising during the year 2.3 (19.7 ) 1.6 Balance at end of year $ (123.0 ) $ (137.0 ) $ (129.0 ) OPEB plans: Balance at beginning of year $ 4.4 $ 3.8 $ 3.1 Other comprehensive loss: Amortization of prior service credit and net losses included in net periodic OPEB cost (1.0 ) (1.0 ) (.8 ) Net actuarial gain arising during the year .4 .3 .1 Balance at end of year $ 3.8 $ 3.1 $ 2.4 Total accumulated other comprehensive income (loss): Balance at beginning of year $ (148.6 ) $ (197.0 ) $ (221.9 ) Other comprehensive income (loss) (48.4 ) (24.9 ) 42.9 Balance at end of year $ (197.0 ) $ (221.9 ) $ (179.0 )

Related Party Transactions (Tab

Related Party Transactions (Tables)	12 Months Ended
	Dec. 31, 2017
Related Party Transactions [Abstract]
Receivables from and Payables to Affiliates	Receivables from and payables to affiliates are summarized in the table below. December 31, 2016 2017 (In millions) Current receivables from affiliates: Contran: Trade items $ .4 $ 1.0 Income taxes — 19.4 Louisiana Pigment Company, L.P. — 8.9 Other 2.8 3.3 Total $ 3.2 $ 32.6 Current payables to affiliates: Louisiana Pigment Company, L.P. $ 14.7 $ 16.2 Contran income taxes 5.5 — Total $ 20.2 $ 16.2 Noncurrent payable to affiliates: Contran – income taxes $ — $ 70.1 Payables to affiliate included in long-term debt: Valhi—Contran credit facility $ 278.9 $ 284.3

Commitments and Contingencies (

Commitments and Contingencies (Tables)	12 Months Ended
	Dec. 31, 2017
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 2015, 2016, and 2017 are presented below. Years ended December 31, 2015 2016 2017 (In millions) Balance at the beginning of the year $ 118.5 $ 120.4 $ 122.6 Additions charged to expense, net 5.7 5.9 4.1 Payments, net (3.5 ) (3.7 ) (9.1 ) Changes in currency exchange rates and other (.3 ) — (.1 ) Balance at the end of the year $ 120.4 $ 122.6 $ 117.5 Amounts recognized in our Consolidated Balance Sheet at the end of the year: Current liabilities $ 11.7 $ 15.3 $ 6.8 Noncurrent liabilities 108.7 107.3 110.7 Total $ 120.4 $ 122.6 $ 117.5
Approximate Percentage of TiO2 Sales by Volume for Segments	The table below shows the approximate percentage of our TiO 2 2015 2016 2017 Europe 52% 51% 50% North America 29% 29% 31%
Future Minimum Payments Under Non-cancellable Operating Leases	We also lease various other manufacturing facilities and equipment. Some of the leases contain purchase and/or various term renewal options at fair market and fair rental values, respectively. In most cases we expect that, in the normal course of business, such leases will be renewed or replaced by other leases. Net rent expense approximated $14.7 million in 2015 and $14.3 million in 2016 and $16.3 million in 2017. At December 31, 2017, future minimum payments under non-cancellable operating leases having an initial or remaining term of more than one year were as follows: Years ending December 31, Amount (In millions) 2018 $ 8.3 2019 7.1 2020 6.1 2021 5.2 2022 3.1 2023 and thereafter 24.9 Total (1) $ 54.7 (1) Approximately $17 million of the $54.7 million aggregate future minimum rental commitments at December 31, 2017 relates to Kronos’ Leverkusen facility lease discussed above. The minimum commitment amounts for such lease included in the table above for each year through the 2050 expiration of the lease are based upon the current annual rental rate as of December 31, 2017. As discussed above, any change in the rent is based solely on negotiations between Bayer and Kronos, and any such change in the rent is deemed “contingent rentals” under GAAP which is excluded from the future minimum lease payments disclosed above.

Financial Instruments (Tables)

Financial Instruments (Tables)	12 Months Ended
	Dec. 31, 2017
Fair Value Disclosures [Abstract]
Short-term Investments and Financial Instruments Carried at Fair Value	The following table summarizes the valuation of our short-term investments and financial instruments by the ASC Topic 820 categories as of December 31, 2016 and 2017: Fair Value Measurements Total Quoted Significant Significant (In millions) Asset (liability) December 31, 2016: Marketable securities: Current $ 4.4 $ — $ 4.4 $ — Noncurrent 253.5 .6 2.9 250.0 Interest rate swap (3.1 ) $ — $ (3.1 ) $ — December 31, 2017: Marketable securities: Current $ 3.0 $ — $ 3.0 $ — Noncurrent 255.7 1.3 4.4 250.0
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 as of December 31, 2016 and 2017: December 31, 2016 December 31, 2017 Carrying Fair Carrying Fair (In millions) Cash, cash equivalents and restricted cash equivalents $ 174.8 $ 174.8 $ 461.7 $ 461.7 Deferred payment obligation 9.0 9.0 9.3 9.3 Long-term debt (excluding capitalized leases): Kronos term loan $ 335.9 $ 334.6 $ — $ — Kronos Senior Notes — — 471.1 495.1 Snake River Sugar Company fixed rate loans 250.0 250.0 250.0 250.0 Valhi credit facility with Contran 278.9 278.9 284.3 284.3 Tremont promissory note payable 14.5 14.5 13.1 13.1 BMI bank note payable 8.4 8.5 18.8 19.7 LandWell note payable to the City of Henderson 2.9 2.9 2.5 2.5

Quarterly Results of Operatio48

Quarterly Results of Operations (Unaudited) (Tables)	12 Months Ended
	Dec. 31, 2017
Disclosure Quarterly Results Of Operations Schedule Of Quarterly Results Of Operations [Abstract]
Schedule of Quarterly Results of Operations	Quarter ended March 31 June 30 Sept. 30 Dec. 31 (In millions, except per share data) Year ended December 31, 2016 Net sales $ 348.3 $ 387.5 $ 393.1 $ 390.5 Gross margin 48.4 64.7 85.7 101.4 Operating income .5 16.9 34.8 55.2 Net income (loss) from continuing operations $ (14.0 ) $ (2.4 ) $ 13.3 $ 24.1 Amounts attributable to Valhi stockholders: Income (loss) from continuing operations(2) $ (11.5 ) $ (3.2 ) $ 7.3 $ 15.5 Loss from discontinued operations (2) (7.9 ) (5.5 ) (4.3 ) (6.3 ) Net income (loss) $ (19.4 ) $ (8.7 ) $ 3.0 $ 9.2 Earnings per share: Income (loss) from continuing operations $ (.04 ) $ (.01 ) $ .02 $ .05 Loss from discontinued operations (.02 ) (.01 ) (.01 ) (.02 ) Basic and diluted income (loss) per share $ (.06 ) $ (.02 ) $ .01 $ .03 Year ended December 31, 2017 Net sales $ 405.3 $ 481.7 $ 496.5 $ 495.9 Gross margin 114.0 141.2 161.5 185.3 Operating income 60.1 78.8 98.6 125.4 Net income from continuing operations $ 23.5 $ 163.3 $ 62.2 $ 162.8 Amounts attributable to Valhi stockholders: Income from continuing operations(2) $ 14.4 $ 117.0 $ 44.2 $ 141.1 Income (loss) from discontinued operations (2) (1.7 ) (108.2 ) 1.7 (1.0 ) Net income $ 12.7 $ 8.8 $ 45.9 $ 140.1 Earnings per share: Income from continuing operations $ .04 $ .34 $ .13 $ .41 Loss from discontinued operations — (.31 ) — — Basic and diluted income per share $ .04 $ .03 $ .13 $ .41 (1) We recognized the following amounts during 2016: • a pre-tax charge of $5.1 million in the first quarter related to the contract related intangible asset impairment (see Note 7); • pre-tax insurance settlement gains of $2.0 million, $1.4 million and $.9 million in the first, second and fourth quarters, respectively, (see Note 14); • a current income tax benefit of $5.6 million in the third quarter and a current income tax expense of $2.2 million in the fourth quarter related to the execution and finalization of an Advance Pricing Agreement between the U.S. and Canada (see Note 14); • non-cash deferred income tax expense (benefit) of $2.9 million and $(.8) million and $(4.3) million in the second, third and fourth quarters, respectively, as the result of a net decrease in our deferred income tax asset valuation allowance related to Kronos’ German and Belgian operations (see Note 14); • non-cash income tax expense of $7.2 million related to an increase in our reserve for uncertain tax positions, mostly in the fourth quarter; and • net income in the fourth quarter includes an immaterial out of period adjustment of $4.3 million ($2.7 million net of income tax) to correct for transaction costs related to the proposed sale of our Waste Management Segment incurred in earlier periods. (2) We recognized the following amounts during 2017: • non-cash deferred income tax benefit of $5.0 million, $157.6 million, $7.8 million and $16.3 million in the first, second, third and fourth quarters, respectively, as a result of the reversal of our deferred income tax asset valuation allowances associated with our Chemicals Segment’s German and Belgian operations, (see Note 14); • a pre-tax charge of $7.1 million in the third quarter related to the loss on prepayment of debt (see Note 9); • aggregate income tax benefit of $11.8 million related to the execution and finalization of an Advance Pricing Agreement between Canada and Germany, mostly in the third quarter; • provisional current income tax expense of $76.2 million in the fourth quarter as a result of the 2017 Tax Act for the one-time repatriation tax imposed on the post-1986 undistributed earnings of our non-U.S. subsidiaries (see Note 14); • non-cash deferred income tax benefit of $77.1 million in the fourth quarter related to the revaluation of our net deferred income tax liability resulting from the reduction in the U.S. federal corporate income • non-cash deferred income tax benefit of $18.7 million in the fourth quarter as a result of the reversal of our deferred income tax asset valuation allowance related to certain U.S. deferred income tax assets of one of our non-U.S. subsidiaries (which subsidiary is treated as a dual resident for U.S. income tax purposes) (see Note 14); and • aggregate provisional non-cash deferred income tax expense of $5.3 million in the fourth quarter related to a change in our conclusions regarding our permanent reinvestment assertion with respect to the post-1986 undistributed earnings of our European subsidiaries (see Note 14). The sum of the quarterly per share amounts may not equal the annual per share amounts due to relative changes in the weighted average number of shares used in the per share computations.

Summary of Significant Accoun49

Summary of Significant Accounting Policies - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Basis Of Presentation And Significant Accounting Policies [Line Items]
Percentage owned manufacturing joint venture under equity method investment	50.00%
Capitalized interest costs on property and equipment	$ 2,200,000	$ 1,000,000	$ 1,100,000
Percentage of likelihood for recognition of uncertain tax positions	50.00%
Recognition of receivables for recoveries	$ 0	0
Advertising costs	1,000,000	1,000,000	1,000,000
Research, development and certain sales technical support costs	20,000,000	13,000,000	16,000,000
Chemicals
Basis Of Presentation And Significant Accounting Policies [Line Items]
Shipping and handling costs	$ 101,000,000	90,000,000	87,000,000
Contran
Basis Of Presentation And Significant Accounting Policies [Line Items]
Parent company ownership interest	93.00%
Net cash payments received from/paid to tax group parent	$ 38,900,000	$ 10,700,000	$ 2,500,000

Summary of Significant Accoun50

Summary of Significant Accounting Policies - Computation of Depreciation of Property and Equipment (Detail)	12 Months Ended
	Dec. 31, 2017
Buildings and improvements | Minimum
Property Plant And Equipment [Line Items]
Property and equipment useful life	10 years
Buildings and improvements | Maximum
Property Plant And Equipment [Line Items]
Property and equipment useful life	40 years
Machinery and equipment | Minimum
Property Plant And Equipment [Line Items]
Property and equipment useful life	3 years
Machinery and equipment | Maximum
Property Plant And Equipment [Line Items]
Property and equipment useful life	20 years
Mine development costs
Property Plant And Equipment [Line Items]
Property and equipment useful life	Units-of-production

Business and Geographic Segme51

Business and Geographic Segments - Holding Percentage of Subsidiaries (Detail)	Dec. 31, 2017
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 and Geographic Segme52

Business and Geographic Segments - Additional Information (Detail) $ in Millions	3 Months Ended			12 Months Ended
	Dec. 31, 2016USD ($)	Jun. 30, 2016USD ($)	Mar. 31, 2016USD ($)	Dec. 31, 2017USD ($)Segment	Dec. 31, 2016USD ($)
Segment Reporting Information [Line Items]
Number of operating segments | Segment				3
Contract related intangible asset impairment			$ 5.1		$ 5.1
Business interruption insurance proceeds	$ 0.9	$ 1.4	2		4.3
Non-U.S. subsidiaries
Segment Reporting Information [Line Items]
Net assets of non-U.S. subsidiaries	$ 374			$ 614	374
Real Estate Management And Development | Customer Relationships
Segment Reporting Information [Line Items]
Contract related intangible asset impairment			$ 5.1		5.1
Chemicals
Segment Reporting Information [Line Items]
Business interruption insurance proceeds					$ 4.3
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%
BMI | Real Estate Management And Development
Segment Reporting Information [Line Items]
Direct ownership percentage by parent				63.00%

Business and Geographic Segme53

Business and Geographic Segments - Segment Operating Performance (Detail) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Segment Reporting Information [Line Items]
Net sales	$ 495.9	$ 496.5	$ 481.7	$ 405.3	$ 390.5	$ 393.1	$ 387.5	$ 348.3	$ 1,879.4	$ 1,519.4	$ 1,487.9
Cost of sales									1,277.4	1,219.2	1,259.5
Gross margin	185.3	161.5	141.2	114	101.4	85.7	64.7	48.4	602	300.2	228.4
Operating income	$ 125.4	98.6	$ 78.8	$ 60.1	$ 55.2	$ 34.8	$ 16.9	$ 0.5	362.9	107.4	21.1
Securities earnings									29.5	27.2	26.4
Insurance recoveries									0.4	0.4	3.7
General expenses, net									(35)	(37.3)	(39.5)
Loss on prepayment of debt		$ (7.1)							(7.1)
Interest expense									(58.9)	(58.1)	(53.6)
Income (loss) from continuing operations before income taxes									291.8	39.6	(41.9)
Depreciation and amortization									59	67.5	69.9
Capital expenditures									71.3	58.9	54.6
Chemicals
Segment Reporting Information [Line Items]
Net sales									1,729	1,364.3	1,348.8
Cost of sales									1,172.1	1,109.2	1,158.5
Gross margin									556.9	255.1	190.3
Operating income									341.1	91	7.1
Chemicals | Operating Segment
Segment Reporting Information [Line Items]
Depreciation and amortization									43.4	42.6	44.3
Capital expenditures									64.3	53	47.5
Component Products
Segment Reporting Information [Line Items]
Net sales									112	108.9	109
Cost of sales									77.2	73.8	75.6
Gross margin									34.8	35.1	33.4
Operating income									15.2	15.6	14
Component Products | Operating Segment
Segment Reporting Information [Line Items]
Depreciation and amortization									3.7	3.7	3.5
Capital expenditures									2.8	3.2	4.2
Real Estate Management And Development
Segment Reporting Information [Line Items]
Net sales									38.4	46.2	30.1
Cost of sales									28.1	36.2	25.4
Gross margin									10.3	10	4.7
Operating income									6.6	0.8
Real Estate Management And Development | Operating Segment
Segment Reporting Information [Line Items]
Depreciation and amortization									3	2.9	2.8
Capital expenditures									3.3	2	1.2
Waste Management | Operating Segment
Segment Reporting Information [Line Items]
Depreciation and amortization									8.9	18.3	19.3
Capital expenditures									$ 0.9	$ 0.7	$ 1.7

Business and Geographic Segme54

Business and Geographic Segments - Total Assets Held by Business Segments (Detail) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Segment Reporting Information [Line Items]
Total assets	$ 2,907.5	$ 2,443.2	$ 2,537.4
Corporate and eliminations
Segment Reporting Information [Line Items]
Total assets	353.2	366.9	366.3
Chemicals | Operating Segment
Segment Reporting Information [Line Items]
Total assets	2,190.5	1,548.9	1,617.6
Component Products | Operating Segment
Segment Reporting Information [Line Items]
Total assets	104.9	97.9	88.7
Waste Management | Operating Segment
Segment Reporting Information [Line Items]
Total assets	52	228.6	231.9
Real Estate Management And Development | Operating Segment
Segment Reporting Information [Line Items]
Total assets	$ 206.9	$ 200.9	$ 232.9

Business and Geographic Segme55

Business and Geographic Segments - Net Sales by Point of Origin and Point of Destination (Detail) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Segment Reporting Information [Line Items]
Net sales	$ 495.9	$ 496.5	$ 481.7	$ 405.3	$ 390.5	$ 393.1	$ 387.5	$ 348.3	$ 1,879.4	$ 1,519.4	$ 1,487.9
Point Of Origin
Segment Reporting Information [Line Items]
Net sales									1,879.4	1,519.4	1,487.9
Point Of Destination
Segment Reporting Information [Line Items]
Net sales									1,879.4	1,519.4	1,487.9
United States | Point Of Origin
Segment Reporting Information [Line Items]
Net sales									992.3	819.3	796.9
Germany | Point Of Origin
Segment Reporting Information [Line Items]
Net sales									918.6	699.8	690
Canada | Point Of Origin
Segment Reporting Information [Line Items]
Net sales									309.2	257.7	216.9
Belgium | Point Of Origin
Segment Reporting Information [Line Items]
Net sales									279.9	187.4	198.8
Norway | Point Of Origin
Segment Reporting Information [Line Items]
Net sales									216.4	164.8	183.5
North America | Point Of Destination
Segment Reporting Information [Line Items]
Net sales									668.3	566.8	559
Europe | Point Of Destination
Segment Reporting Information [Line Items]
Net sales									899.2	698.2	700.9
Asia and other | Point Of Destination
Segment Reporting Information [Line Items]
Net sales									311.9	254.4	228
Geography Eliminations | Point Of Origin
Segment Reporting Information [Line Items]
Net sales									$ (837)	$ (609.6)	$ (598.2)

Business and Geographic Segme56

Business and Geographic Segments - Net Property and Equipment by Segment (Detail) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Net property and equipment:
Net property and equipment	$ 588.7	$ 516	$ 515.6
United States
Net property and equipment:
Net property and equipment	80.8	76.2	77
Germany
Net property and equipment:
Net property and equipment	259.2	223.7	229.9
Canada
Net property and equipment:
Net property and equipment	69	60.5	55
Norway
Net property and equipment:
Net property and equipment	81.7	75.5	71.9
Belgium
Net property and equipment:
Net property and equipment	$ 98	$ 80.1	$ 81.8

Business Combinations, Dispos57

Business Combinations, Dispositions and Related Transactions - Additional Information (Detail) - USD ($) $ in Millions	1 Months Ended		3 Months Ended		6 Months Ended	12 Months Ended
	Jun. 30, 2017	Nov. 30, 2015	Mar. 31, 2018	Jun. 30, 2017	Jun. 30, 2017	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Business Combinations Discontinued Operations And Related Transactions [Line Items]
Impairment of long lived assets held for use						$ 170.6
Contract termination fee received	$ 4
Waste Management
Business Combinations Discontinued Operations And Related Transactions [Line Items]
Impairment of long lived assets held for use				$ 170.6
Waste Management | Discontinued Operations | Scenario, Forecast
Business Combinations Discontinued Operations And Related Transactions [Line Items]
Expected pre-tax gain from disposal of discontinued operations			$ 57
Kronos Worldwide, Inc.
Business Combinations Discontinued Operations And Related Transactions [Line Items]
Repurchase of common stock									2,000,000
Repurchased shares						0	0	0
Shares available for purchase						1,950,000
CompX | Class A
Business Combinations Discontinued Operations And Related Transactions [Line Items]
Shares available for purchase						678,000
WCS
Business Combinations Discontinued Operations And Related Transactions [Line Items]
Impairment of long lived assets held for use					$ 170.6
Property and equipment, salvage value	$ 5.7			$ 5.7	5.7
Expenses related to sale of business including legal fees						$ 8.7	$ 5.8
WCS | Net Property and Equipment
Business Combinations Discontinued Operations And Related Transactions [Line Items]
Impairment of long lived assets held for use					127.5
WCS | Disposal Site Operating Permits, Net
Business Combinations Discontinued Operations And Related Transactions [Line Items]
Impairment of long lived assets held for use					42
WCS | Other Assets
Business Combinations Discontinued Operations And Related Transactions [Line Items]
Impairment of long lived assets held for use					$ 1.1
WCS | Divestiture Terms Pending
Business Combinations Discontinued Operations And Related Transactions [Line Items]
Proceeds from sale of subsidiary		$ 270

Business Combinations, Dispos58

Business Combinations, Dispositions and Related Transactions - Schedule of Consolidated Balance Sheets (Detail) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
ASSETS
Current assets	$ 11.2	$ 17.2
Other noncurrent assets	40.8	211.4
LIABILITIES
Total current liabilities	47.3	46.1
Total noncurrent liabilities	52.9	94.2
Waste Management
ASSETS
Current assets	11.2	17.2
Restricted cash	27.2	21.6
Property and equipment, net	6	138.5
Other noncurrent assets	7.6	8.4
Total noncurrent assets	40.8	211.4
Total assets	52	228.6
LIABILITIES
Current portion of long-term debt	3	3.3
Other current liabilities	8.2	11.4
Total current liabilities	47.3	46.1
Long-term debt	65	67.9
Accrued noncurrent closure and post closure costs	31.7	29.4
Total noncurrent liabilities	52.9	94.2
Total liabilities	100.2	140.3
Deferred income taxes	(43.8)	(3.1)
Waste Management | Capitalized Operating Permits
ASSETS
Waste disposal site operating permits, net		42.9
Waste Management | Contran | Trade Accounts Payables
LIABILITIES
Payable to affiliates	$ 36.1	$ 31.4

Business Combinations, Dispos59

Business Combinations, Dispositions and Related Transactions - Schedule of Consolidated Statements of Operations (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Income tax benefit	$ (67.1)	$ (12.6)	$ (10.1)
Net loss	(109.2)	(24)	(21.7)
Waste Management
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Net sales	75.4	47.4	45
Operating loss	(167.1)	(26.2)	(26.5)
Other income (expense), net	(4.4)	(5.3)	0.1
Interest expense, net	(4.8)	(5.1)	(5.4)
Loss before taxes	(176.3)	(36.6)	(31.8)
Income tax benefit	(67.1)	(12.6)	(10.1)
Net loss	(109.2)	(24)	(21.7)
Net cash provided by (used in) operating activities	18.1	(10.7)	(12.2)
Net cash provided by (used in) investing activities	$ (3.4)	$ (2.7)	$ 0.8

Accounts and Other Receivable60

Accounts and Other Receivables, Net - Components of Accounts and Other Receivables (Detail) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Trade accounts receivable:
VAT and other receivables	$ 20.7	$ 18.6
Allowance for doubtful accounts	(1.5)	(0.8)
Total	332.7	254.3
Trade Accounts Receivable | Kronos Worldwide, Inc.
Trade accounts receivable:
Accounts receivable	301.4	224.8
Trade Accounts Receivable | CompX
Trade accounts receivable:
Accounts receivable	10.5	10.4
Trade Accounts Receivable | BMI and LandWell
Trade accounts receivable:
Accounts receivable	$ 1.6	$ 1.3

Inventories, Net - Inventories,

Inventories, Net - Inventories, Net (Detail) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Inventory [Line Items]
Raw materials	$ 109.6	$ 71.4
Work in process	30.6	31.3
Finished products	195	199.6
Supplies (chemicals)	63.2	56.9
Total	398.4	359.2
Chemicals
Inventory [Line Items]
Raw materials	106.9	68.7
Work in process	20.8	22.3
Finished products	192.2	196.4
Component Products
Inventory [Line Items]
Raw materials	2.7	2.7
Work in process	9.8	9
Finished products	$ 2.8	$ 3.2

Marketable Securities - Schedul

Marketable Securities - Schedule of Marketable Securities (Detail) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Schedule Of Available For Sale Securities [Line Items]
Market value, available for sale securities, current	$ 3	$ 4.4
Market value, available for sale securities, noncurrent	255.7	253.5
Non Current Assets
Schedule Of Available For Sale Securities [Line Items]
Cost basis	255.9	253.7
Unrealized losses, net	(0.2)	(0.2)
Current Assets
Schedule Of Available For Sale Securities [Line Items]
Cost basis	3	4.4
Unrealized losses, net	0	0
Other | Non Current Assets
Schedule Of Available For Sale Securities [Line Items]
Market value, available for sale securities, noncurrent	5.7	3.5
Cost basis	5.9	3.7
Unrealized losses, net	(0.2)	(0.2)
Amalgamated Sugar Company LLC
Schedule Of Available For Sale Securities [Line Items]
Market value, available for sale securities, noncurrent	250	250
Amalgamated Sugar Company LLC | Non Current Assets
Schedule Of Available For Sale Securities [Line Items]
Market value, available for sale securities, noncurrent	250	250
Cost basis	250	250
Unrealized losses, net	$ 0	$ 0

Marketable Securities - Sched63

Marketable Securities - Schedule of Marketable Securities and Fair Value Measurements (Detail) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Marketable securities, current	$ 3	$ 4.4
Marketable securities, noncurrent	255.7	253.5
Fixed Income Securities
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Marketable securities, noncurrent	4.4	2.9
Mutual Funds and Common Stocks
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Marketable securities, noncurrent		0.6
Common Stocks and Exchange Traded Funds [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Marketable securities, noncurrent	1.3
Amalgamated Sugar Company LLC
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Marketable securities, noncurrent	250	250
Quoted Prices in Active Markets (Level 1)
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Marketable securities, noncurrent	1.3	0.6
Quoted Prices in Active Markets (Level 1) | Mutual Funds and Common Stocks
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Marketable securities, noncurrent		0.6
Quoted Prices in Active Markets (Level 1) | Common Stocks and Exchange Traded Funds [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Marketable securities, noncurrent	1.3
Significant Other Observable Inputs (Level 2)
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Marketable securities, current	3	4.4
Marketable securities, noncurrent	4.4	2.9
Significant Other Observable Inputs (Level 2) | Fixed Income Securities
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Marketable securities, noncurrent	4.4	2.9
Significant Unobservable Inputs (Level 3)
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Marketable securities, noncurrent	250	250
Significant Unobservable Inputs (Level 3) | Amalgamated Sugar Company LLC
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Marketable securities, noncurrent	$ 250	$ 250

Marketable Securities - Additio

Marketable Securities - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Schedule Of Available For Sale Securities [Line Items]
Marketable securities	$ 255.7	$ 253.5
Amalgamated Sugar Company LLC
Schedule Of Available For Sale Securities [Line Items]
Net of assets transferred to the LLC	34
Marketable securities	250
Cost of the investment in LLC	$ 250
Percentage of share from profit of LLC	95.00%
Additional preferential share receivable in case distributions are below this base level	95.00%
Amalgamated Sugar Company LLC | Base Level
Schedule Of Available For Sale Securities [Line Items]
Distributions from LLC - aggregate annual base level	$ 26.7
Snake River
Schedule Of Available For Sale Securities [Line Items]
Loan issued by Snake River	250
Snake River | Amalgamated Sugar Company LLC
Schedule Of Available For Sale Securities [Line Items]
Minimum amount annual distributions received from Amalgamated Sugar LLC will exceed Snake River loan interest payments	$ 1.8

Investment in TiO2 Manufactur65

Investment in TiO2 Manufacturing Joint Venture and Other Assets - Investment in TiO2 Manufacturing Joint Venture and Other Assets (Detail) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Other assets:
Land held for development	$ 126.6	$ 138.1
Restricted cash equivalents	9.9	2.6
IBNR receivables	6.8	7.1
Other	26.6	16.9
Total	$ 169.9	$ 164.7

Investment in TiO2 Manufactur66

Investment in TiO2 Manufacturing Joint Venture and Other Assets - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Mar. 31, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Other Assets Non Current [Line Items]
Percentage owned manufacturing joint venture under equity method investment		50.00%
Contract related intangible asset impairment	$ 5.1		$ 5.1
Real Estate Management And Development | City Of Henderson
Other Assets Non Current [Line Items]
Delivery contract extended period		25 years
Water delivery contract revenue, percentage		70.00%
Real Estate Management And Development | Customer Relationships
Other Assets Non Current [Line Items]
Indefinite-lived intangible asset				$ 5.1
Contract related intangible asset impairment	$ 5.1		$ 5.1
LPC | Huntsman P&A Investments LLC
Other Assets Non Current [Line Items]
Percentage owned manufacturing joint venture under equity method investment		50.00%
LPC | Chemicals
Other Assets Non Current [Line Items]
Percentage owned manufacturing joint venture under equity method investment		50.00%
Venator Materials PLC | Tioxide Group | Huntsman P&A Investments LLC
Other Assets Non Current [Line Items]
Parent company ownership interest		100.00%
LPC
Other Assets Non Current [Line Items]
Purchase of TiO2 from the plant			52.00%

Investment in TiO2 Manufactur67

Investment in TiO2 Manufacturing Joint Venture and Other Assets - Components of Net Distributions from LPC (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Summary Of Investment Holdings [Line Items]
Net distributions	$ (6)	$ 3.6	$ 6.5
LPC
Summary Of Investment Holdings [Line Items]
Distributions from LPC	44	35	48.2
Contributions to LPC	$ (50)	$ (31.4)	$ (41.7)

Investment in TiO2 Manufactur68

Investment in TiO2 Manufacturing Joint Venture and Other Assets - Summary of Financial Information (Detail) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Financial Information [Line Items]
Current assets	$ 1,262.2				$ 837.4				$ 1,262.2	$ 837.4
Property and equipment, net	588.7				516				588.7	516	$ 515.6
Total assets	2,907.5				2,443.2				2,907.5	2,443.2	2,537.4
Other liabilities, primarily current	33.4				23.3				33.4	23.3
Total liabilities and equity	2,907.5				2,443.2				2,907.5	2,443.2
Net sales	495.9	$ 496.5	$ 481.7	$ 405.3	390.5	$ 393.1	$ 387.5	$ 348.3	1,879.4	1,519.4	1,487.9
Cost of sales									1,277.4	1,219.2	1,259.5
General and administrative									269.4	236.4	248.6
Total costs and expenses									1,612.8	1,518.8	1,561.7
Net income (loss)									302.6	(3)	(171.1)
LPC
Financial Information [Line Items]
Current assets	104.1				94.5				104.1	94.5
Property and equipment, net	116.1				111.6				116.1	111.6
Total assets	220.2				206.1				220.2	206.1
Other liabilities, primarily current	44.4				45.2				44.4	45.2
Partners’ equity	175.8				160.9				175.8	160.9
Total liabilities and equity	$ 220.2				$ 206.1				220.2	206.1
Net sales									315.8	315.4	339
Cost of sales									315.4	314.9	338.5
General and administrative									0.4	0.5	0.5
Total costs and expenses									315.8	315.4	339
Net income (loss)									0	0	0
LPC | Kronos Worldwide, Inc.
Financial Information [Line Items]
Net sales									157.5	157.5	176.5
Venator Materials PLC | Tioxide Group | Huntsman P&A Investments LLC
Financial Information [Line Items]
Net sales									$ 158.3	$ 157.9	$ 162.5

Goodwill - Changes in Carrying

Goodwill - Changes in Carrying Amount of Goodwill (Detail) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Goodwill [Line Items]
Goodwill	$ 379.7	$ 379.7	$ 379.7
Chemicals
Goodwill [Line Items]
Goodwill	352.6	352.6	352.6
Component Products
Goodwill [Line Items]
Goodwill	$ 27.1	$ 27.1	$ 27.1

Goodwill - Additional Informati

Goodwill - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Goodwill [Line Items]
Aggregate goodwill impairment	$ 0	$ 0	$ 0
Consolidated gross goodwill	$ 396,200,000
Component Products
Goodwill [Line Items]
Aggregate goodwill impairment				$ 16,500,000

Long-Term Debt - Long-Term Debt

Long-Term Debt - Long-Term Debt (Detail) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Long-term debt
Total debt	$ 1,043.1	$ 893.8
Less current maturities	1.6	4.5
Total long-term debt	1,041.5	889.3
VALHI, INC.
Long-term debt
Total debt	534.3	528.9
VALHI, INC. | Contran Credit Facility
Long-term debt
Total debt	284.3	278.9
VALHI, INC. | Notes Payable, Other Payables | Snake River
Long-term debt
Total debt	250	250
Kronos Worldwide, Inc. | 3.75% Senior Secured Notes due September 15, 2025 | Kronos International, Inc
Long-term debt
Total debt	471.1
Kronos Worldwide, Inc. | 2014 Term Loan
Long-term debt
Total debt		335.9
Tremont | Promissory Note
Long-term debt
Total debt	13.1	14.5
BMI | 2018 Notes Payable to Banks | Western Alliance Bank
Long-term debt
Total debt	18.8
BMI | Refinanced Notes Payable to Banks | Meadows Bank
Long-term debt
Total debt		8.4
LandWell | Unsecured Debt
Long-term debt
Total debt	2.5	2.9
Other Subsidiary | Other
Long-term debt
Total debt	3.3	3.2
Subsidiary
Long-term debt
Total debt	$ 508.8	$ 364.9

Long-Term Debt - Valhi - Additi

Long-Term Debt - Valhi - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2017	Jan. 31, 2018
Contran Credit Facility
Debt Instrument [Line Items]
Amount available for borrowing	$ 39,400,000
Contran Credit Facility | Waste Management | Subsequent Event
Debt Instrument [Line Items]
Noncash borrowings		$ 36,300,000
VALHI, INC. | Contran Credit Facility
Debt Instrument [Line Items]
Maximum borrowing capacity	$ 360,000,000
Debt instrument, Interest rate at period end	5.50%
Debt due date, start date	Dec. 31, 2019
Credit facility, Amount borrowed	$ 5,400,000
Amount available for borrowing	$ 75,700,000
Debt instrument basis spread on variable rate	1.00%
Debt instrument, average interest rate during period	5.10%
VALHI, INC. | Notes Payable, Other Payables | Snake River
Debt Instrument [Line Items]
Term loan	$ 250,000,000
Loans bear interest at a weighted average fixed interest rate	9.40%
Debt instrument maturity date	Jan. 31, 2027
Recourse loans	$ 37,500,000
Nonrecourse loans	$ 212,500,000
WCS | Subsequent Event | Contran | Amounts Acquired in Business Divestiture
Debt Instrument [Line Items]
Acquired trade receivable		$ 36,300,000

Long-Term Debt - Kronos Term Lo

Long-Term Debt - Kronos Term Loans - Additional Information (Detail)	Sep. 13, 2017USD ($)	Sep. 30, 2017USD ($)	Sep. 30, 2017USD ($)	Jun. 30, 2017USD ($)	Sep. 13, 2017USD ($)	Dec. 31, 2017USD ($)	Sep. 13, 2017EUR (€)	Dec. 31, 2016USD ($)
Debt Instrument [Line Items]
Loss on prepayment of debt			$ 7,100,000			$ 7,100,000
Kronos Worldwide, Inc.
Debt Instrument [Line Items]
Parent company ownership interest						50.00%
Kronos Worldwide, Inc. | North American Revolving Credit Facility
Debt Instrument [Line Items]
Repayments of debt	$ 21,000,000
Kronos Worldwide, Inc. | Notes Payable, Other Payables | 2014 Term Loan
Debt Instrument [Line Items]
Repayments of debt		$ 338,600,000
Unamortized debt issuance costs								$ 3,600,000
Quarterly principal payment				$ 1,800,000
Debt instrument, voluntary repayment period						2017-09
Loss on prepayment of debt			7,100,000
Write-off of unamortized debt issuance costs			2,700,000
Write-off of unamortized original issue discount			700,000
Termination of interest rate swap contract			$ 3,300,000
Debt instrument, average interest rate during period					4.10%
Unamortized original issue discount								$ 900,000
Kronos Worldwide, Inc. | Kronos International, Inc | 3.75% Senior Secured Notes due September 15, 2025
Debt Instrument [Line Items]
Debt instrument principal amount	$ 477,600,000				$ 477,600,000		€ 400,000,000
Debt instrument maturity date	Sep. 15, 2025
Debt instrument interest rate	3.75%				3.75%		3.75%
Debt instrument, interest payment terms						bear interest at 3.75% per annum, payable semi-annually on March 15 and September 15 of each year, beginning on March 15, 2018
Debt instrument, frequency of periodic payment of interest						semi-annually
Debt Instrument, date of first required semi-annual payment	Mar. 15, 2018
Debt instrument redemption price percent if experiences certain specified change of control events	101.00%
Debt instrument, redemption, description						have a maturity date of September 15, 2025. Prior to September 15, 2020, Kronos may redeem some or all of the Senior Notes at a price equal to 100% of the principal amount thereof, plus a “make-whole” premium (as defined in the indenture governing the Senior Notes). On or after September 15, 2020, Kronos may redeem the Senior Notes at redemption prices ranging from 102.813% of the principal amount, declining to 100% on or after September 15, 2023. In addition, on or before September 15, 2020, Kronos may redeem up to 40% of the Senior Notes with the net proceeds of certain public or private equity offerings at 103.75% of the principal amount. If Kronos experiences certain specified change of control events, it would be required to make an offer to purchase the Senior Notes at 101% of the principal amount. Kronos would also be required to make an offer to purchase a specified portion of the Senior Notes at par value in the event that it generates a certain amount of net proceeds from the sale of assets outside the ordinary course of business, and such net proceeds are not otherwise used for specified purposes within a specified time period;
Maximum amount of other indebtedness default before triggering customary default provisions	$ 50,000,000
Unamortized debt issuance costs						$ 7,500,000
Kronos Worldwide, Inc. | Kronos International, Inc | 3.75% Senior Secured Notes due September 15, 2025 | Collateral Pledged | Direct Domestic Subsidiary of KII and Guarantors
Debt Instrument [Line Items]
Parent company ownership interest	100.00%				100.00%		100.00%
Kronos Worldwide, Inc. | Kronos International, Inc | 3.75% Senior Secured Notes due September 15, 2025 | Collateral Pledged | Foreign Subsidiary Directly Owned by KII or any Guarantor
Debt Instrument [Line Items]
Parent company ownership interest	65.00%				65.00%		65.00%
Kronos Worldwide, Inc. | Kronos International, Inc | 3.75% Senior Secured Notes due September 15, 2025 | Non-voting Common Stock | Collateral Pledged | Foreign Subsidiary Directly Owned by KII or any Guarantor
Debt Instrument [Line Items]
Parent company ownership interest	100.00%				100.00%		100.00%
Kronos Worldwide, Inc. | Kronos International, Inc | 3.75% Senior Secured Notes due September 15, 2025 | Prior to September 15, 2020
Debt Instrument [Line Items]
Debt instrument, redemption price percentage	100.00%
Kronos Worldwide, Inc. | Kronos International, Inc | 3.75% Senior Secured Notes due September 15, 2025 | On or After September 15, 2020
Debt Instrument [Line Items]
Debt instrument, redemption price percentage	102.813%
Kronos Worldwide, Inc. | Kronos International, Inc | 3.75% Senior Secured Notes due September 15, 2025 | On or After September 15, 2023
Debt Instrument [Line Items]
Debt instrument, redemption price percentage	100.00%
Kronos Worldwide, Inc. | Kronos International, Inc | 3.75% Senior Secured Notes due September 15, 2025 | On or Before September 15, 2020
Debt Instrument [Line Items]
Debt instrument, redemption price percentage	103.75%
Kronos Worldwide, Inc. | Kronos International, Inc | 3.75% Senior Secured Notes due September 15, 2025 | On or Before September 15, 2020 | Maximum
Debt Instrument [Line Items]
Debt instrument, percentage of debt that may be redeemed	40.00%

Long-Term Debt - Revolving Cred

Long-Term Debt - Revolving Credit Facility - Additional Information (Detail) - Kronos Worldwide, Inc.	1 Months Ended		8 Months Ended	12 Months Ended
	Sep. 30, 2017USD ($)	Jan. 31, 2017	Sep. 13, 2017	Dec. 31, 2017USD ($)	Dec. 31, 2017EUR (€)	Dec. 31, 2016USD ($)	Dec. 31, 2017EUR (€)	Sep. 30, 2017EUR (€)	Jun. 30, 2012USD ($)
Foreign Line of Credit | Europe
Line Of Credit Facility [Line Items]
Outstanding borrowings under revolving credit facility				$ 0
Amount available for borrowing				$ 107,700,000			€ 90,000,000
Revolving credit facility, borrowings (repayments) | €					€ 0
Revolving North American Credit Facility
Line Of Credit Facility [Line Items]
Line of credit maximum borrowing capacity									$ 125,000,000
Line of credit maturity, description				As amended in January 2017, the facility matures the earlier of (i) January 30, 2022 or (ii) 90 days prior to the maturity date of our term loan (or the maturity date of any new term loan constituting a permitted refinancing of the existing term loan). The issuance of the Senior Notes is a permitted refinancing of our term loan, and accordingly, the maturity date of the North American revolving credit facility is January 30, 2022.	As amended in January 2017, the facility matures the earlier of (i) January 30, 2022 or (ii) 90 days prior to the maturity date of our term loan (or the maturity date of any new term loan constituting a permitted refinancing of the existing term loan). The issuance of the Senior Notes is a permitted refinancing of our term loan, and accordingly, the maturity date of the North American revolving credit facility is January 30, 2022.
Fixed charge coverage ratio, minimum value				100.00%	100.00%
Revolving credit facility, borrowings				$ 253,900,000		$ 266,200,000
Repayment of credit facility				253,900,000		$ 266,200,000
Debt instrument, average interest rate during period			4.80%
Repayments of line of credit using Senior Notes proceeds	$ 21,000,000
Outstanding borrowings under revolving credit facility				0
Amount available for borrowing				$ 98,200,000
Revolving North American Credit Facility | Maturity Date Option 1
Line Of Credit Facility [Line Items]
Line of credit, maturity date				Jan. 30, 2022	Jan. 30, 2022
Revolving North American Credit Facility | Maturity Date Option 2
Line Of Credit Facility [Line Items]
Maturity date of term loan		90 days
Line of credit maturity				2022-01	2022-01
Revolving North American Credit Facility | Minimum | Variable Rate
Line Of Credit Facility [Line Items]
Interest rate on outstanding borrowings				1.50%	1.50%
Revolving North American Credit Facility | Minimum | Base Rate Option
Line Of Credit Facility [Line Items]
Interest rate on outstanding borrowings				0.50%	0.50%
Revolving North American Credit Facility | Maximum | Variable Rate
Line Of Credit Facility [Line Items]
Interest rate on outstanding borrowings				2.00%	2.00%
Revolving North American Credit Facility | Maximum | Base Rate Option
Line Of Credit Facility [Line Items]
Interest rate on outstanding borrowings				1.00%	1.00%
Letter Of Credit | Revolving North American Credit Facility
Line Of Credit Facility [Line Items]
Line of credit maximum borrowing capacity				$ 15,000,000
Canadian Subsidiary Revolving Borrowings Maximum | Revolving North American Credit Facility
Line Of Credit Facility [Line Items]
Line of credit maximum borrowing capacity				$ 25,000,000
European Revolving Credit Facility
Line Of Credit Facility [Line Items]
Line of credit maximum borrowing capacity | €								€ 90,000,000
Line of credit facility amended month and year				2017-09	2017-09
Line of credit maturity	Sep. 30, 2022
European Revolving Credit Facility | EURIBOR
Line Of Credit Facility [Line Items]
Interest rate on outstanding borrowings	1.60%

Long-Term Debt - Other - Additi

Long-Term Debt - Other - Additional Information (Detail) - Promissory Note - Tremont - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Debt Instrument [Line Items]
Interest rate	3.00%
Principal prepayments of note	$ 1.5	$ 2.6
Principal amount of promissory note	$ 19.1
Debt instrument maturity date	Dec. 31, 2023

Long-Term Debt - Notes Payable

Long-Term Debt - Notes Payable to BMI - Additional Information (Detail) - USD ($) $ in Millions	1 Months Ended	12 Months Ended
	Feb. 28, 2017	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Debt Instrument [Line Items]
Repayment of note payable		$ 600.2	$ 309	$ 53.4
BMI | Bank note payable | Meadows Bank
Debt Instrument [Line Items]
Repayment of note payable	$ 8.5
BMI | 2017 Bank Loan | Bank note payable | Western Alliance Bank
Debt Instrument [Line Items]
Principal amount of loan agreement	$ 20.5
Frequency of debt instrument payment	semi-annual
Debt instrument, payment terms	The agreement requires semi-annual payments of principal and interest on June 1 and December 1 aggregating $1.9 million annually beginning on June 1, 2017 through the maturity date in June 2032 (except during 2017 which calls for prorated aggregate principal and interest payments of $1.6 million).
Periodic principal and interest payments	$ 1.9
Loans maturity period	2032-06
Prorated principal and interest payments	$ 1.6
Interest rate	5.34%
Debt issuance cost	$ 0.9

Long-Term Debt - Notes Payabl77

Long-Term Debt - Notes Payable Landwell - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2014
Debt Instrument [Line Items]
Notes payable outstanding	$ 1,043,100,000	$ 893,800,000
LandWell | Note payable to the City of Henderson
Debt Instrument [Line Items]
Debt instrument			$ 3,900,000
Periodic principal payments	$ 250,000
Interest rate terms	The loan bears interest at a 3% fixed rate.
Debt instrument maturity date	Dec. 31, 2020
Frequency of debt instrument payment	semi-annual
Long-term promissory note fixed interest rate	3.00%
Notes payable outstanding	$ 2,500,000

Long-Term Debt - Aggregate Matu

Long-Term Debt - Aggregate Maturities of Long-Term Debt (Detail) $ in Millions	Dec. 31, 2017USD ($)
Disclosure Longterm Debt Aggregate Maturities Of Long Term Debt [Abstract]
2,018	$ 1.6
2,019	286
2,020	4.2
2,021	1.8
2,022	1.8
2023 and thereafter	756.1
Subtotal	1,051.5
Less amounts representing interest on capital leases, original issue discount and debt issuance costs	8.4
Total long-term debt	$ 1,043.1

Accounts Payable and Accrued 79

Accounts Payable and Accrued Liabilities - Schedule of Accounts Payable and Accrued Liabilities (Detail) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Accounts payable:
Accounts payable	$ 116.1	$ 92.8
Current accrued liabilities:
Employee benefits	36.3	28
Accrued sales discounts and rebates	14.3	22.6
Deferred income	28.3	28.7
Environmental remediation and related costs	6.8	15.3	$ 11.7
Reserve for uncertain tax positions		3.3
Accrued workforce reduction costs	0.2	1.2
Interest	5.5	0.2
Other	33.4	23.3
Total	124.8	125.4
Noncurrent accrued liabilities:
Reserve for uncertain tax positions	16.5	35.7
Asset retirement obligations	1.6	1.3
Deferred income	15.7	12.6
Employee benefits	8.4	7.6
Insurance claims and expenses	9.1	9.5
Deferred payment obligation	9.3	9
Accrued development costs	6.1	5
Other	6.9	3.8
Total	73.6	84.5
Kronos Worldwide, Inc.
Accounts payable:
Accounts payable	107.9	84.9
CompX
Accounts payable:
Accounts payable	2.3	2.6
BMI/LandWell
Accounts payable:
Accounts payable	3.7	2.2
NL
Accounts payable:
Accounts payable	1.8	2.4
Other
Accounts payable:
Accounts payable	$ 0.4	0.7
Interest Rate Swap Contract
Current accrued liabilities:
Hedging liabilities		$ 2.8

Accounts Payable and Accrued 80

Accounts Payable and Accrued Liabilities - Additional Information (Detail) - Basic Management Inc And LandWell - Deferred Payment - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Present Value
Accounts Payable And Accrued Liabilities [Line Items]
Discount rate	3.00%
Real Estate Management And Development | Face Value
Accounts Payable And Accrued Liabilities [Line Items]
Business combination consideration transferred, deferred payment obligation		$ 11.1
Interest rate		3.00%

Employee Benefit Plans - Additi

Employee Benefit Plans - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Defined Benefit Plan Disclosure [Line Items]
Defined contribution plan expense	$ 5.5	$ 5.6	$ 5.3
Defined Benefit Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Expected contribution	18.9
Expect to recognize unrecognized actuarial gains (losses)	(15)
Expect to recognize prior service credit\cost	$ 0.2
Defined Benefit Pension Plans | U.S.
Defined Benefit Plan Disclosure [Line Items]
Discount rate	3.50%	3.90%
Long-term return on plan assets	7.50%	7.50%	7.50%
Weighted average discount rate used in determining the net periodic cost	3.90%	4.10%	3.80%
Defined Benefit Pension Plans | U.S. | CMRT | Level 1 and Level 2
Defined Benefit Plan Disclosure [Line Items]
Percentage of fair value of asset	93.00%	92.00%
Defined Benefit Pension Plans | Foreign
Defined Benefit Plan Disclosure [Line Items]
Discount rate	2.10%	2.10%
Long-term return on plan assets	2.50%	3.90%	4.60%
Weighted average discount rate used in determining the net periodic cost	2.10%	2.60%	2.50%
Defined Benefit Pension Plans | Foreign | Canada
Defined Benefit Plan Disclosure [Line Items]
Average basis points of long-term rate of return on investment	1.25%
Defined Benefit Pension Plans | Foreign | Significant Unobservable Inputs (Level 3) | Norway
Defined Benefit Plan Disclosure [Line Items]
Percentage of plan asset allocation	10.00%
Defined Benefit Pension Plans | Foreign | Equity Securities | Norway
Defined Benefit Plan Disclosure [Line Items]
Long-term return on plan assets	6.00%
Percentage of plan asset allocation	11.00%
Defined Benefit Pension Plans | Foreign | Equity Securities | Minimum | Canada
Defined Benefit Plan Disclosure [Line Items]
Percentage of plan asset allocation	20.00%
Defined Benefit Pension Plans | Foreign | Equity Securities | Maximum | Canada
Defined Benefit Plan Disclosure [Line Items]
Percentage of plan asset allocation	30.00%
Defined Benefit Pension Plans | Foreign | Fixed Income Funds | Norway
Defined Benefit Plan Disclosure [Line Items]
Long-term return on plan assets	3.00%
Percentage of plan asset allocation	79.00%
Defined Benefit Pension Plans | Foreign | Fixed Income Funds | Minimum | Canada
Defined Benefit Plan Disclosure [Line Items]
Percentage of plan asset allocation	70.00%
Defined Benefit Pension Plans | Foreign | Fixed Income Funds | Maximum | Canada
Defined Benefit Plan Disclosure [Line Items]
Percentage of plan asset allocation	80.00%
Defined Benefit Pension Plans | Foreign | Real Estate | Norway
Defined Benefit Plan Disclosure [Line Items]
Long-term return on plan assets	5.00%
Percentage of plan asset allocation	7.00%
Defined Benefit Pension Plans | Foreign | Other Investments And Liquid Funds | Norway
Defined Benefit Plan Disclosure [Line Items]
Long-term return on plan assets	7.00%
OPEB
Defined Benefit Plan Disclosure [Line Items]
Expected contribution	$ 1
Discount rate	3.10%	3.40%
Expect to recognize unrecognized actuarial gains (losses)	$ 0.2
Expect to recognize prior service credit\cost	$ 1.1
Eligible age for health care benefits	65 years
Weighted average discount rate used in determining the net periodic cost	3.35%	3.60%	3.40%

Employee Benefit Plans - Schedu

Employee Benefit Plans - Schedule of Defined Benefit Plan Expected Future Payments (Detail) $ in Millions	Dec. 31, 2017USD ($)
Defined Benefit Pension Plans
Pension Plans Postretirement And Other Employee Benefits [Line Items]
2,018	$ 25.9
2,019	26.5
2,020	27.7
2,021	27.8
2,022	29
Next 5 years	157.3
OPEB
Pension Plans Postretirement And Other Employee Benefits [Line Items]
2,018	1
2,019	0.9
2,020	0.9
2,021	0.8
2,022	0.8
Next 5 years	$ 3.4

Employee Benefit Plans - Sche83

Employee Benefit Plans - Schedule of Funded Status (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Amounts recognized in the Consolidated Balance Sheets:
Pension asset	$ 4.2	$ 1.6
Noncurrent	(266.4)	(240.2)
Defined Benefit Pension Plans
Change in benefit obligation:
Service cost	11.4	9.9
Change in plan assets:
Fair value at beginning of the year	427.4
Fair value at end of year	491.7	427.4
Defined Benefit Pension Plans | U.S.
Change in benefit obligation:
Balance at beginning of the year	62.8	66.6
Interest cost	2.5	2.7	$ 2.7
Actuarial loss (gain)	1.9	(2.3)
Benefits paid	(4.2)	(4.2)
Balance at end of the year	63	62.8	66.6
Change in plan assets:
Fair value at beginning of the year	45.6	47.6
Actual return on plan assets	4	2.1
Employer contributions	1.1	0.1
Benefits paid	(4.2)	(4.2)
Fair value at end of year	46.5	45.6	47.6
Funded status	(16.5)	(17.2)
Amounts recognized in the Consolidated Balance Sheets:
Current	(0.3)	(0.2)
Noncurrent	(16.2)	(17)
Total recognized in balance sheet	(16.5)	(17.2)
Accumulated other comprehensive (income) loss:
Accumulated other comprehensive loss—Actuarial loss	37.2	39.3
Total amount recognized in balance sheet and AOCI	20.7	22.1
Accumulated benefit obligations (“ABO”)	$ 63	$ 62.8
Defined Benefit Plan, Funding Status [Extensible List]	us-gaap:FundedPlanMember	us-gaap:FundedPlanMember
Defined Benefit Pension Plans | Foreign
Change in benefit obligation:
Balance at beginning of the year	$ 603.4	$ 578.9
Service cost	11.4	9.9	11.2
Interest cost	13.4	15.1	15.1
Participants’ contributions	1.5	1.5
Actuarial loss (gain)	9.3	35.6
Plan settlement	(0.3)
Change in currency exchange rates	73.7	(16.8)
Benefits paid	(21.2)	(20.8)
Balance at end of the year	691.2	603.4	578.9
Change in plan assets:
Fair value at beginning of the year	381.8	382.5
Actual return on plan assets	24.1	12.2
Employer contributions	16	15.3
Participants’ contributions	1.5	1.5
Change in currency exchange rates	43	(8.9)
Benefits paid	(21.2)	(20.8)
Fair value at end of year	445.2	381.8	382.5
Funded status	(246)	(221.6)
Amounts recognized in the Consolidated Balance Sheets:
Pension asset	4.2	1.6
Noncurrent	(250.2)	(223.2)
Total recognized in balance sheet	(246)	(221.6)
Accumulated other comprehensive (income) loss:
Accumulated other comprehensive loss—Actuarial loss	242.8	261.2
Accumulated other comprehensive (income) loss - Prior service credit	1.5	1.7
Accumulated other comprehensive loss, Total	244.3	262.9
Total amount recognized in balance sheet and AOCI	(1.7)	41.3
Accumulated benefit obligations (“ABO”)	$ 664.7	$ 578.8
Defined Benefit Plan, Funding Status [Extensible List]	us-gaap:FundedPlanMember	us-gaap:FundedPlanMember
OPEB
Change in benefit obligation:
Balance at beginning of the year	$ 12.2	$ 12.9
Service cost	0.1	0.1	0.1
Interest cost	0.4	0.5	0.5
Actuarial loss (gain)		(0.5)
Change in currency exchange rates	0.5	0.2
Benefits paid	(0.9)	(1)
Balance at end of the year	12.3	12.2	$ 12.9
Change in plan assets:
Funded status	(12.3)	(12.2)
Amounts recognized in the Consolidated Balance Sheets:
Current	(1)	(1.1)
Noncurrent	(11.3)	(11.1)
Total recognized in balance sheet	(12.3)	(12.2)
Accumulated other comprehensive (income) loss:
Accumulated other comprehensive loss—Actuarial loss	2.2	1.9
Accumulated other comprehensive (income) loss - Prior service credit	(5.7)	(6.8)
Accumulated other comprehensive loss, Total	(3.5)	(4.9)
Total amount recognized in balance sheet and AOCI	$ (15.8)	$ (17.1)
Defined Benefit Plan, Funding Status [Extensible List]	us-gaap:FundedPlanMember	us-gaap:FundedPlanMember

Employee Benefit Plans - Compon

Employee Benefit Plans - Components of Net Periodic Defined Benefit Pension Benefit Cost (Credit) (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Defined Benefit Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 11.4	$ 9.9
Total	29.9	22.9
Defined Benefit Pension Plans | U.S.
Defined Benefit Plan Disclosure [Line Items]
Interest cost	2.5	2.7	$ 2.7
Expected return on plan assets	(3.3)	(3.4)	(3.9)
Amortization of unrecognized net actuarial loss	2	1.9	1.7
Total	1.2	1.2	0.5
Defined Benefit Pension Plans | Foreign
Defined Benefit Plan Disclosure [Line Items]
Service cost	11.4	9.9	11.2
Interest cost	13.4	15.1	15.1
Settlement loss	0.1
Expected return on plan assets	(9.7)	(14.9)	(17.3)
Amortization of unrecognized prior service credit	0.3	0.2	0.4
Amortization of unrecognized net actuarial loss	13.2	11.4	13.8
Total	28.7	21.7	23.2
OPEB
Defined Benefit Plan Disclosure [Line Items]
Service cost	0.1	0.1	0.1
Interest cost	0.4	0.5	0.5
Amortization of unrecognized prior service credit	(1.1)	(1.8)	(1.9)
Amortization of unrecognized net actuarial loss	(0.2)	(0.1)
Total	$ (0.8)	$ (1.3)	$ (1.3)

Employee Benefit Plans - Sche85

Employee Benefit Plans - Schedule of Plans for which Accumulated Benefit Obligations Exceeds Plan Assets (Detail) - Defined Benefit Pension Plans - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
U.S.
Plans for which the ABO exceeds plan assets:
Projected benefit obligations	$ 63	$ 62.8
Accumulated benefit obligations	63	62.8
Fair value of plan assets	46.5	45.6
Foreign
Plans for which the ABO exceeds plan assets:
Projected benefit obligations	625.1	541.5
Accumulated benefit obligations	603.8	521.8
Fair value of plan assets	$ 375	$ 319.5

Employee Benefit Plans - Summar

Employee Benefit Plans - Summary of Actuarial Assumptions Used to Determine Net Periodic Benefit Cost (Credit) (Detail) - Defined Benefit Pension Plans	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
U.S.
Pension Plans Postretirement And Other Employee Benefits [Line Items]
Discount rate	3.90%	4.10%	3.80%
Long-term return on plan assets	7.50%	7.50%	7.50%
Foreign
Pension Plans Postretirement And Other Employee Benefits [Line Items]
Discount rate	2.10%	2.60%	2.50%
Increase in future compensation levels	2.60%	2.90%	2.60%
Long-term return on plan assets	2.50%	3.90%	4.60%

Employee Benefit Plans - Summ87

Employee Benefit Plans - Summary of Actuarial Assumptions Used to Benefit Obligations (Detail) - Defined Benefit Pension Plans - Foreign	Dec. 31, 2017	Dec. 31, 2016
Pension Plans Postretirement And Other Employee Benefits [Line Items]
Discount rate	2.10%	2.10%
Increase in future compensation levels	2.60%	2.60%

Employee Benefit Plans - Sche88

Employee Benefit Plans - Schedule of Changes in Plan Assets and Benefit Obligations Recognized in Other Comprehensive Income (Loss) (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Defined Benefit Pension Plans
Pension Plans Postretirement And Other Employee Benefits [Line Items]
Net actuarial gain (loss)	$ 4	$ (38)	$ 0.3
Amortization of unrecognized prior service cost (credit)	0.3	0.3	0.4
Amortization of unrecognized net actuarial loss	15.2	13.3	15.4
Total	19.5	(24.4)	16.1
OPEB
Pension Plans Postretirement And Other Employee Benefits [Line Items]
Net actuarial gain (loss)	(0.2)	0.5	0.8
Plan amendments/curtailment		(0.1)
Amortization of unrecognized prior service cost (credit)	(1.1)	(1.8)	(1.9)
Total	$ (1.3)	$ (1.4)	$ (1.1)

Employee Benefit Plans - Sche89

Employee Benefit Plans - Schedule of Aggregate Fair Value of Asset and Supplemental Asset Mix (Detail) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Defined Benefit Plan Disclosure [Line Items]
CMRT asset value	$ 672.4	$ 637.8
CMRT asset mix	100.00%	100.00%
Total CMRT assets	100.00%	100.00%
Level 1
Defined Benefit Plan Disclosure [Line Items]
CMRT asset mix	54.00%	54.00%
Level 2
Defined Benefit Plan Disclosure [Line Items]
CMRT asset mix	8.00%	8.00%
Level 3
Defined Benefit Plan Disclosure [Line Items]
CMRT asset mix	7.00%	8.00%
Assets Not Subject to Fair Value Hierarchy
Defined Benefit Plan Disclosure [Line Items]
CMRT asset mix	31.00%	30.00%
Domestic Equities, Principally Publicly Traded
Defined Benefit Plan Disclosure [Line Items]
CMRT asset mix	33.00%	31.00%
International Equities, Principally Publicly Traded
Defined Benefit Plan Disclosure [Line Items]
CMRT asset mix	25.00%	22.00%
Fixed Income Securities, Principally Publicly Traded
Defined Benefit Plan Disclosure [Line Items]
CMRT asset mix	31.00%	36.00%
Privately Managed Limited Partnerships
Defined Benefit Plan Disclosure [Line Items]
CMRT asset mix	4.00%	5.00%
Hedge Funds
Defined Benefit Plan Disclosure [Line Items]
CMRT asset mix	5.00%	5.00%
Other, Primarily Cash
Defined Benefit Plan Disclosure [Line Items]
CMRT asset mix	2.00%	1.00%

Employee Benefit Plans - Compos

Employee Benefit Plans - Composition of Pension Plan Assets (Detail) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Defined Benefit Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Plan assets	$ 491.7	$ 427.4
Other Pension Plans, Defined Benefit
Defined Benefit Plan Disclosure [Line Items]
Plan assets	26.1	22
Quoted Prices in Active Markets (Level 1) | Defined Benefit Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Plan assets	171.6	151.3
Quoted Prices in Active Markets (Level 1) | Other Pension Plans, Defined Benefit
Defined Benefit Plan Disclosure [Line Items]
Plan assets	16	13.8
Significant Other Observable Inputs (Level 2) | Defined Benefit Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Plan assets	46.5	45.6
Significant Unobservable Inputs (Level 3) | Defined Benefit Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Plan assets	273.6	230.5	$ 236.2
Significant Unobservable Inputs (Level 3) | Other Pension Plans, Defined Benefit
Defined Benefit Plan Disclosure [Line Items]
Plan assets	10.1	8.2
Germany | Defined Benefit Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Plan assets	257.9	217
Germany | Significant Unobservable Inputs (Level 3) | Defined Benefit Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Plan assets	257.9	217
Canada | Local Currency Equities | Defined Benefit Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Plan assets	8.4	14.8
Canada | Foreign Equities | Defined Benefit Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Plan assets	16.4	19.7
Canada | Local Currency Fixed Income | Defined Benefit Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Plan assets	81.8	59.5
Canada | Cash and Other | Defined Benefit Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Plan assets	0.3	0.4
Canada | Quoted Prices in Active Markets (Level 1) | Local Currency Equities | Defined Benefit Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Plan assets	8.4	14.8
Canada | Quoted Prices in Active Markets (Level 1) | Foreign Equities | Defined Benefit Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Plan assets	16.4	19.7
Canada | Quoted Prices in Active Markets (Level 1) | Local Currency Fixed Income | Defined Benefit Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Plan assets	81.8	59.5
Canada | Quoted Prices in Active Markets (Level 1) | Cash and Other | Defined Benefit Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Plan assets	0.3	0.4
Norway | Local Currency Equities | Defined Benefit Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Plan assets	1.8	1.6
Norway | Foreign Equities | Defined Benefit Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Plan assets	4.6	4.1
Norway | Local Currency Fixed Income | Defined Benefit Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Plan assets	21	23.2
Norway | Cash and Other | Defined Benefit Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Plan assets	15.4	9.9
Norway | Foreign Fixed Income | Defined Benefit Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Plan assets	6.8	5.4
Norway | Real Estate | Defined Benefit Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Plan assets	4.7	4.2
Norway | Quoted Prices in Active Markets (Level 1) | Local Currency Equities | Defined Benefit Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Plan assets	1.8	1.6
Norway | Quoted Prices in Active Markets (Level 1) | Foreign Equities | Defined Benefit Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Plan assets	4.6	4.1
Norway | Quoted Prices in Active Markets (Level 1) | Local Currency Fixed Income | Defined Benefit Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Plan assets	21	23.2
Norway | Quoted Prices in Active Markets (Level 1) | Cash and Other | Defined Benefit Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Plan assets	14.5	8.8
Norway | Quoted Prices in Active Markets (Level 1) | Foreign Fixed Income | Defined Benefit Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Plan assets	6.8	5.4
Norway | Significant Unobservable Inputs (Level 3) | Cash and Other | Defined Benefit Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Plan assets	0.9	1.1
Norway | Significant Unobservable Inputs (Level 3) | Real Estate | Defined Benefit Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Plan assets	4.7	4.2
U.S. | CMRT | Defined Benefit Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Plan assets	46.5	45.6
U.S. | Significant Other Observable Inputs (Level 2) | CMRT | Defined Benefit Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Plan assets	$ 46.5	$ 45.6

Employee Benefit Plans - Sche91

Employee Benefit Plans - Schedule of Rollforward of Change in Fair Value of Level 3 Assets (Detail) - Defined Benefit Pension Plans - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Schedule Of Reconciliation Of Changes In Fair Value Of Assets And Liabilities [Line Items]
Fair value at beginning of the year	$ 427.4
Fair value at end of year	491.7	$ 427.4
Significant Unobservable Inputs (Level 3)
Schedule Of Reconciliation Of Changes In Fair Value Of Assets And Liabilities [Line Items]
Fair value at beginning of the year	230.5	236.2
Gain on assets held at end of year	11	4.1
Gain on assets sold during the year	0.2
Assets purchased	13.4	13.1
Assets sold	(13.8)	(13.4)
Currency exchange rate fluctuations	32.3	(9.5)
Fair value at end of year	$ 273.6	$ 230.5

Employee Benefit Plans - Summ92

Employee Benefit Plans - Summary of Key Actuarial Assumptions Used to Determine Net Benefit Obligations (Detail) - OPEB	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Healthcare inflation:
Initial rate		7.00%
Ultimate rate	5.00%	5.00%
Year of ultimate rate achievement	2,021	2,021
Discount rate	3.10%	3.40%
Minimum
Healthcare inflation:
Initial rate	6.25%
Maximum
Healthcare inflation:
Initial rate	6.50%

Other Income, Net - Schedule of

Other Income, Net - Schedule of Components of Other Income (Detail) - USD ($) $ in Millions	3 Months Ended			12 Months Ended
	Dec. 31, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Securities earnings:
Dividends and interest				$ 29.4	$ 26.7	$ 26.4
Securities transactions, net				0.1	0.5
Total				29.5	27.2	26.4
Insurance recoveries				0.4	0.4	3.7
Currency transactions, net				(7.5)	5.5	(0.1)
Disposal of property and equipment, net				(0.5)	(0.3)	(0.8)
Business interruption insurance proceeds	$ 0.9	$ 1.4	$ 2		4.3
Infrastructure reimbursement				1	0.6	0.2
Other, net				2.3	1.3	2.5
Total				$ 25.2	$ 39	$ 31.9

Other Income, Net - Additional

Other Income, Net - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended			12 Months Ended
	Dec. 31, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Disclosure Other Income Net Additional Information Detail [Line Items]
Dividends and interest income				$ 29.4	$ 26.7	$ 26.4
Insurance recoveries				0.4	0.4	3.7
Income received from settlement of business interruption insurance claim	$ 0.9	$ 1.4	$ 2		4.3
Other Income | Insurance Claim Arising In 2014 | Kronos Worldwide, Inc.
Disclosure Other Income Net Additional Information Detail [Line Items]
Income received from settlement of business interruption insurance claim					3.4
Other Income | Insurance Claim Arising In 2015 | Kronos Worldwide, Inc.
Disclosure Other Income Net Additional Information Detail [Line Items]
Income received from settlement of business interruption insurance claim	$ 0.9
Amalgamated Sugar Company LLC
Disclosure Other Income Net Additional Information Detail [Line Items]
Dividends and interest income				$ 25.4	$ 25.4	$ 25.4

Restructuring Costs - Additiona

Restructuring Costs - Additional Information (Detail) - Chemicals - Employee Severance $ in Millions	9 Months Ended	12 Months Ended
	Dec. 31, 2015Employee	Dec. 31, 2016USD ($)	Dec. 31, 2015USD ($)
Restructuring Cost And Reserve [Line Items]
Workforce reduction, number of individuals | Employee	160
Restructuring charges			$ 21.7
Restructuring charges paid		$ 4.1	15.9
Cost of sales
Restructuring Cost And Reserve [Line Items]
Restructuring charges			10.8
Selling, general and administrative Expense
Restructuring Cost And Reserve [Line Items]
Restructuring charges			$ 10.9

Income Taxes - Components of Co

Income Taxes - Components of Comprehensive Provision for Income Taxes Allocation (Detail) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Schedule Of Income Tax [Line Items]
United States		$ 26.7	$ (8.2)	$ (3.5)
Non-U.S. subsidiaries		265.1	47.8	(38.4)
Income (loss) from continuing operations before income taxes		291.8	39.6	(41.9)
Expected tax expense (benefit) at U.S. federal statutory income tax rate of 35%		102.1	13.8	(14.7)
Non-U.S. tax rates		(13.1)	(4.3)	0.6
Incremental net tax expense (benefit) on earnings and losses of non-U.S. and non-tax group companies		14.8	8.2	(37.6)
Valuation allowance		(205.4)	(2.2)	159
Transition tax	$ 76.2	76.2
Change in federal tax rate		(77.1)
U.S. state income taxes, net		3.5	1.7	(1.1)
Adjustment to the reserve for uncertain tax positions, net		(18.2)	7.2	0.8
Nondeductible expenses		2.2	1.9	2.5
Domestic production activities deduction		(3.8)	(3.8)	(1.3)
Other, net		(1.2)	(0.5)	(0.7)
Provision for income taxes (benefit)		(120)	18.6	107.5
Comprehensive provision for income taxes (benefit) allocable to:
Income (loss) from continuing operations		(120)	18.6	107.5
Discontinued operations		(67.1)	(12.6)	(10.1)
Other comprehensive income (loss):
Marketable securities		2.8	2.1	(4.1)
Currency translation		31.1	(3.4)	(17.3)
Interest rate swap		1.6	0.2	(1.7)
Total		(143.6)	(0.6)	78
Pension Plans
Other comprehensive income (loss):
Defined benefit plans		8.6	(5)	4.1
OPEB Plans
Other comprehensive income (loss):
Defined benefit plans		$ (0.6)	(0.5)	$ (0.4)
Kronos Worldwide, Inc. | US-Canada APA
Schedule Of Income Tax [Line Items]
U.S. – Canada APA			$ (3.4)

Income Taxes - Component of Inc

Income Taxes - Component of Income Taxes Expenses (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Currently payable (refundable):
U.S. federal and state	$ 87.3	$ 35.5	$ 15.1
Non-U.S.	38.5	9.5	3.3
Total	125.8	45	18.4
Deferred income taxes (benefit):
U.S. federal and state	(96.9)	(29.1)	(55.8)
Non-U.S.	(148.9)	2.7	144.9
Total	(245.8)	(26.4)	89.1
Provision for income taxes (benefit)	$ (120)	$ 18.6	$ 107.5

Income Taxes - Components of 98

Income Taxes - Components of Comprehensive Provision for Income Taxes Allocation (Parenthetical) (Detail)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Income Tax Disclosure [Abstract]
U.S. federal statutory income tax rate	35.00%	35.00%	35.00%

Income Taxes - Additional Infor

Income Taxes - Additional Information (Detail) $ in Millions	Dec. 31, 2016USD ($)	Jun. 30, 2015USD ($)	Dec. 31, 2017USD ($)	Sep. 30, 2017USD ($)	Jun. 30, 2017USD ($)	Dec. 31, 2016USD ($)	Dec. 31, 2015USD ($)	Sep. 30, 2015USD ($)	Jun. 30, 2015USD ($)	Dec. 31, 2017USD ($)	Jun. 30, 2017USD ($)	Dec. 31, 2015USD ($)	Dec. 31, 2018	Dec. 31, 2017USD ($)	Dec. 31, 2016USD ($)	Dec. 31, 2015USD ($)	Dec. 31, 2016CAD ($)
Income Taxes Disclosure [Line Items]
U.S. federal statutory income tax rate														35.00%	35.00%	35.00%
Income tax examination, description														Tax authorities may in the future examine certain of our U.S. and non-U.S. tax returns and have or may propose tax deficiencies, including penalties and interest. Because of the inherent uncertainties involved in settlement initiatives and court and tax proceedings, we cannot guarantee that these tax matters will be resolved in our favor, and therefore our potential exposure, if any, is also uncertain.
Deferred income tax benefit from change in enacted tax rate														$ 77,100,000
Current income tax expense provisional pursuant to transition tax			$ 76,200,000											76,200,000
Increase (decrease) in non-cash deferred income tax asset valuation allowance														(205,400,000)	$ (2,200,000)	$ 159,000,000
Income taxes	$ 5,100,000		25,100,000			$ 5,100,000				$ 25,100,000				25,100,000	5,100,000
Non-cash income tax benefit related to reversal of reserve for uncertain tax positions						7,200,000
Deferred income taxes expense (benefit)														(245,800,000)	(26,400,000)	89,100,000
Unrecognized tax benefits impact on effective tax rate			13,100,000							13,100,000				13,100,000
Increase (decrease) in unrecognized tax benefits			1,800,000							1,800,000				1,800,000
Accrued interest and penalties during the period														2,100,000	1,600,000	$ 1,300,000
Accrued interest and penalties end of the period	5,200,000		1,500,000			5,200,000				1,500,000				$ 1,500,000	5,200,000
US-Canada APA
Income Taxes Disclosure [Line Items]
Current U.S. income tax benefit															$ (3,400,000)
Canada - Germany APA
Income Taxes Disclosure [Line Items]
U.S.-Canada Advance Pricing Agreement, description														During the third quarter of 2017, our 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. Pursuant to the terms of the Canada-Germany APA, the Canadian and German tax authorities agreed to certain prior year changes to taxable income of our Canadian and German subsidiaries.
Non-cash income tax benefit related to reversal of reserve for uncertain tax positions				$ 8,100,000										$ 8,600,000
Canada - Germany APA | Earliest Tax Year
Income Taxes Disclosure [Line Items]
Effective tax year														2,005
Canada - Germany APA | Latest Tax Year
Income Taxes Disclosure [Line Items]
Effective tax year														2,017
Scenario Plan
Income Taxes Disclosure [Line Items]
U.S. federal statutory income tax rate													21.00%
Expected Future Periods Net Operating Loss Utilization
Income Taxes Disclosure [Line Items]
Increase (decrease) in non-cash deferred income tax asset valuation allowance					$ (149,900,000)
Effect of Currency Exchange Rates
Income Taxes Disclosure [Line Items]
Increase (decrease) in non-cash deferred income tax asset valuation allowance														$ 13,700,000
Transition Tax | Maximum
Income Taxes Disclosure [Line Items]
Percentage of annual usage limitation on net operating loss carryforward														80.00%
Germany | Expected Future Periods Net Operating Loss Utilization
Income Taxes Disclosure [Line Items]
Increase (decrease) in non-cash deferred income tax asset valuation allowance					(141,900,000)
Belgium | Expected Future Periods Net Operating Loss Utilization
Income Taxes Disclosure [Line Items]
Increase (decrease) in non-cash deferred income tax asset valuation allowance					(8,000,000)
Germany and Belgian
Income Taxes Disclosure [Line Items]
Increase (decrease) in non-cash deferred income tax asset valuation allowance														$ (186,700,000)
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										(24,100,000)	$ (12,700,000)
One Non-U.S. subsidiary | Expected Future Periods Net Operating Loss Utilization | Valuation Allowance of Deferred Tax Assets | Non Cash Deferred Income Tax Benefit
Income Taxes Disclosure [Line Items]
Increase (decrease) in non-cash deferred income tax asset valuation allowance			(18,700,000)
Kronos Worldwide, Inc. | US-Canada APA | Earliest Tax Year
Income Taxes Disclosure [Line Items]
Effective tax year															2,005
Kronos Worldwide, Inc. | US-Canada APA | Latest Tax Year
Income Taxes Disclosure [Line Items]
Effective tax year															2,015
Kronos Worldwide, Inc. | Expected Future Periods Net Operating Loss Utilization
Income Taxes Disclosure [Line Items]
Increase (decrease) in non-cash deferred income tax asset valuation allowance	(173,000,000)				$ (149,900,000)
Kronos Worldwide, Inc. | Germany | Expected Future Periods Net Operating Loss Utilization
Income Taxes Disclosure [Line Items]
Increase (decrease) in non-cash deferred income tax asset valuation allowance	(153,000,000)
Kronos Worldwide, Inc. | Belgium | Expected Future Periods Net Operating Loss Utilization
Income Taxes Disclosure [Line Items]
Increase (decrease) in non-cash deferred income tax asset valuation allowance	(20,000,000)
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		$ 150,300,000									$ (12,700,000)	$ 8,700,000			$ (2,200,000)
European Subsidiaries | Transition Tax
Income Taxes Disclosure [Line Items]
Current income tax expense provisional pursuant to transition tax			76,200,000
Income tax liability payable period														8 years
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			70,100,000							70,100,000				$ 70,100,000
European Subsidiaries | Transition Tax | Income Tax Receivable | Contran
Income Taxes Disclosure [Line Items]
Current income tax expense payable in next fiscal year			6,100,000							6,100,000				6,100,000
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 (benefit)			5,300,000
Kronos Canadian Subsidiary | US-Canada APA
Income Taxes Disclosure [Line Items]
Income taxes	$ 2,300,000					$ 2,300,000									2,300,000		$ 3
Corporate Tax Purposes | Kronos Worldwide, Inc. | Germany
Income Taxes Disclosure [Line Items]
Net operating loss carryforwards			652,000,000							652,000,000				652,000,000
Corporate Tax Purposes | Kronos Worldwide, Inc. | Belgium
Income Taxes Disclosure [Line Items]
Net operating loss carryforwards			50,000,000							50,000,000				50,000,000
Trade Tax Purposes | Kronos Worldwide, Inc. | Germany
Income Taxes Disclosure [Line Items]
Net operating loss carryforwards			500,000							500,000				500,000
Canada Revenue Agency and German Federal Central Tax Office | Germany | Canada - Germany APA
Income Taxes Disclosure [Line Items]
Non-cash income tax benefit related to increase in German NOLs				2,600,000
Cash tax refund				$ 600,000
Direct investment in subsidiary excess carrying amount | Kronos Worldwide, Inc.
Income Taxes Disclosure [Line Items]
Deferred income taxes expense (benefit)							$ (29,300,000)	$ (29,300,000)	$ (29,300,000)					22,100,000	$ 6,500,000
Direct Investment in Subsidiary | Kronos Worldwide, Inc.
Income Taxes Disclosure [Line Items]
Deferred income tax liability			157,600,000							157,600,000				157,600,000
Direct Investment in Subsidiary | Kronos Worldwide, Inc. | Maximum
Income Taxes Disclosure [Line Items]
Deferred income tax liability			$ 173,000,000							$ 173,000,000				$ 173,000,000

Income Taxes - Components of Ne

Income Taxes - Components of Net Deferred Tax Asset (Liability) (Detail) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Tax effect of temporary differences related to:
Inventories	$ 3.3	$ 4.2
Property and equipment	0.1
Accrued OPEB costs	3	3.7
Accrued pension costs	70.9	52.6
Currency revaluation on intercompany debt		24
Accrued environmental liabilities	28.8	41.1
Other deductible differences	11.7	25.5
Investments in subsidiaries and affiliates	2.7
Tax loss and tax credit carryforwards	116.2	142.6
Valuation allowance	(2.8)	(173.4)
Adjusted gross deferred tax assets	233.9	120.3
Netting of items by tax jurisdiction, assets	(114.1)	(120.3)
Net noncurrent deferred tax asset (liability)	119.8
Tax effect of temporary differences related to:
Inventories	(0.8)	(4)
Marketable securities	(25.4)	(59.9)
Property and equipment	(71.8)	(77.5)
Other taxable differences	(14)	(18.9)
Investments in subsidiaries and affiliates	(175.8)	(235.3)
Tax on unremitted earnings of non-U.S. subsidiaries	(9.5)	(2.8)
Adjusted gross deferred tax liabilities	(297.3)	(398.4)
Netting of items by tax jurisdiction, liabilities	(114.1)	(120.3)
Net noncurrent deferred tax asset (liability)	$ (183.2)	$ (278.1)

Income Taxes - Changes in Uncer

Income Taxes - Changes in Uncertain Tax Positions (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Unrecognized tax benefits:
Amount beginning of year	$ 35.6	$ 28.8	$ 30.1
Net increase (decrease):
Tax positions taken in prior periods	(13.3)	(0.6)	(0.4)
Tax positions taken in current period	4.5	11	6.4
Lapse due to applicable statute of limitations	(8.1)	(1.6)	(6)
Settlement with taxing authorities	(2.3)	(2.3)
Changes in currency exchange rates	0.7	0.3	(1.3)
Amount at end of year	$ 17.1	$ 35.6	$ 28.8

Noncontrolling Interest in S102

Noncontrolling Interest in Subsidiaries - Noncontrolling Interest in Net Assets of Subsidiaries (Detail) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Noncontrolling interest in net assets:
Noncontrolling interest in subsidiaries	$ 342.3	$ 243.5
Kronos Worldwide, Inc.
Noncontrolling interest in net assets:
Noncontrolling interest in subsidiaries	204.9	134.5
NL Industries
Noncontrolling interest in net assets:
Noncontrolling interest in subsidiaries	71.1	44.3
CompX International
Noncontrolling interest in net assets:
Noncontrolling interest in subsidiaries	17.8	16.4
BMI
Noncontrolling interest in net assets:
Noncontrolling interest in subsidiaries	26	24.6
LandWell
Noncontrolling interest in net assets:
Noncontrolling interest in subsidiaries	$ 22.5	$ 23.7

Noncontrolling interest in S103

Noncontrolling interest in Subsidiaries - Schedule of Noncontrolling Interest in Net Income (Loss) of Subsidiaries (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Noncontrolling interest in net income (loss) of subsidiaries:
Noncontrolling interest in net income (loss) of subsidiaries	$ 95.1	$ 12.9	$ (37.5)
Kronos Worldwide, Inc.
Noncontrolling interest in net income (loss) of subsidiaries:
Noncontrolling interest in net income (loss) of subsidiaries	69.3	8.3	(34.3)
NL Industries
Noncontrolling interest in net income (loss) of subsidiaries:
Noncontrolling interest in net income (loss) of subsidiaries	19.7	2.6	(4)
CompX International
Noncontrolling interest in net income (loss) of subsidiaries:
Noncontrolling interest in net income (loss) of subsidiaries	1.7	1.4	1.2
BMI
Noncontrolling interest in net income (loss) of subsidiaries:
Noncontrolling interest in net income (loss) of subsidiaries	3.2	(0.4)	0.1
LandWell
Noncontrolling interest in net income (loss) of subsidiaries:
Noncontrolling interest in net income (loss) of subsidiaries	$ 1.2	$ 1	$ (0.5)

Valhi Stockholders' Equity - Sc

Valhi Stockholders' Equity - Schedule of Common Stock Outstanding (Detail) - shares shares in Millions	Dec. 31, 2017	Dec. 31, 2016
Schedule Of Stockholders Equity [Line Items]
Shares of common stock, Issued, beginning balance	355.3	355.3
Shares of common stock, Issued, ending balance	355.3	355.3
Shares of common stock, Treasury, beginning balance	(13.2)	(13.2)
Shares of common stock, Treasury, ending balance	(13.2)	(13.2)
Shares of common stock, Outstanding, beginning balance	355.3
Shares of common stock, Outstanding, ending balance	355.3	355.3
Excluding Stock Ownership By Subsidiary Considered To Be Held In Treasury
Schedule Of Stockholders Equity [Line Items]
Shares of common stock, Outstanding, beginning balance	342	342
Shares of common stock, Outstanding, ending balance	342	342

Valhi Stockholders' Equity - Ad

Valhi Stockholders' Equity - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2012
Schedule Of Stockholders Equity [Line Items]
Treasury stock, shares	13,200,000	13,200,000	13,200,000
Percentage of shares held by majority-owned subsidiary that has to be considered for voting purpose	100.00%
Preferred stock, par value	$ 0.01	$ 0.01
Director Plan
Schedule Of Stockholders Equity [Line Items]
Number of shares authorized					200,000
Shares awarded under new plan	12,000	16,000	10,500
Common stock available for future grant	138,500
Series A Preferred Stock
Schedule Of Stockholders Equity [Line Items]
Preferred stock, shares outstanding	5,000
Preferred stock liquidation preference, per share	$ 133,466.75
Preferred stock, aggregate liquidation preference	$ 667.3
Preferred stock, par value	$ 0.01
Non-cumulative dividend on preferred stock	6.00%
NL
Schedule Of Stockholders Equity [Line Items]
Treasury stock, shares	14,400,000	14,400,000
NL | Director Plan
Schedule Of Stockholders Equity [Line Items]
Common stock available for future grant	154,000
Kronos Worldwide, Inc.
Schedule Of Stockholders Equity [Line Items]
Shares available for purchase	1,950,000
Treasury stock, shares	1,700,000	1,700,000
Kronos Worldwide, Inc. | Director Plan
Schedule Of Stockholders Equity [Line Items]
Common stock available for future grant	155,500
CompX | Director Plan
Schedule Of Stockholders Equity [Line Items]
Common stock available for future grant	166,000
Common stock
Schedule Of Stockholders Equity [Line Items]
Shares available for purchase				10,000,000

Valhi Stockholders' Equity - Ac

Valhi Stockholders' Equity - Accumulated Other Comprehensive Income (Loss) (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Accumulated Other Comprehensive Income Loss [Line Items]
Balance at beginning of year	$ 200.9
Other comprehensive income (loss)	42.9	$ (24.9)	$ (48.4)
Balance at end of year	424.4	200.9
Marketable Securities
Accumulated Other Comprehensive Income Loss [Line Items]
Balance at beginning of year	1.7	1.6	1.6
Other comprehensive income (loss)		0.1
Balance at end of year	1.7	1.7	1.6
Interest Rate Swap
Accumulated Other Comprehensive Income Loss [Line Items]
Balance at beginning of year	(1.2)	(1.3)
Other comprehensive income (loss)	(1.2)	(1.2)	(1.7)
Balance at end of year		(1.2)	(1.3)
Less reclassification adjustments for amounts included in realized loss and interest expense	2.4	1.3	0.4
Currency Translation
Accumulated Other Comprehensive Income Loss [Line Items]
Balance at beginning of year	(88.5)	(78.1)	(22.6)
Other comprehensive income (loss)	34.4	(10.4)	(55.5)
Balance at end of year	(54.1)	(88.5)	(78.1)
Accumulated Defined Benefit Plans Adjustment | Defined Benefit Pension Plans
Accumulated Other Comprehensive Income Loss [Line Items]
Balance at beginning of year	(137)	(123)	(132)
Other comprehensive income (loss)	6.4	5.7	6.7
Net actuarial gain (loss) arising during the year	1.6	(19.7)	2.3
Balance at end of year	(129)	(137)	(123)
Accumulated Defined Benefit Plans Adjustment | OPEB
Accumulated Other Comprehensive Income Loss [Line Items]
Balance at beginning of year	3.1	3.8	4.4
Other comprehensive income (loss)	(0.8)	(1)	(1)
Net actuarial gain (loss) arising during the year	0.1	0.3	0.4
Balance at end of year	2.4	3.1	3.8
Total Accumulated Other Comprehensive Income (Loss)
Accumulated Other Comprehensive Income Loss [Line Items]
Balance at beginning of year	(221.9)	(197)	(148.6)
Balance at end of year	$ (179)	$ (221.9)	$ (197)

Related Party Transactions - Ad

Related Party Transactions - Additional Information (Detail) - USD ($) shares in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Contran | Intercorporate Services Agreements Fees
Related Party Transaction [Line Items]
Related party transaction	$ 40,000,000	$ 36,500,000	$ 35,800,000
Contran | Combined Information Technology Data Recovery Program
Related Party Transaction [Line Items]
Related party transaction	258,000	253,000	298,000
Contran | Pledge Fee Received
Related Party Transaction [Line Items]
Revenue and other income from related party transactions	2,800,000	$ 1,200,000	800,000
Contran | Tremont | Deferred Payment | Present Value
Related Party Transaction [Line Items]
Guarantee Obligations, estimated exposure	9,300,000
Contran | Tremont | Deferred Payment | Face Value
Related Party Transaction [Line Items]
Guarantee Obligations, estimated exposure	11,100,000
Contran | Tremont | Promissory Notes
Related Party Transaction [Line Items]
Guarantee Obligations, estimated exposure	$ 13,100,000
Contran | Kronos Worldwide, Inc. | Securities Pledged as Collateral
Related Party Transaction [Line Items]
Stock pledged as collateral	30.2	30.2
Contran | Waste Control Specialists | Performance Guarantee
Related Party Transaction [Line Items]
Guarantee Obligations, estimated exposure	$ 3,900,000	$ 3,900,000	3,900,000
Contran | Revolving Credit Facility
Related Party Transaction [Line Items]
Interest on borrowings under credit facilities	14,400,000	12,900,000	10,300,000
Contran | Letter Of Credit | Waste Control Specialists
Related Party Transaction [Line Items]
Guarantee Obligations, maximum exposure	6,300,000
Costs related to the Letter of Credit	100,000	100,000	100,000
Contran and Other Affiliates
Related Party Transaction [Line Items]
Related party transaction cash received for insurance premium	5,900,000	5,300,000	5,400,000
LPC
Related Party Transaction [Line Items]
Purchase of Ti02 from LPC	157,500,000	157,500,000	176,500,000
Sales of feedstock ore to LPC	$ 79,400,000	$ 68,800,000	$ 80,600,000

Related Party Transactions - Re

Related Party Transactions - Receivables from and Payables to Affiliates (Detail) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Current receivables from affiliates:
Receivable from affiliates	$ 32.6	$ 3.2
Current payables to affiliates:
Payable to affiliates	16.2	20.2
Contran
Current receivables from affiliates:
Trade items	1	0.4
Income taxes	19.4
Current payables to affiliates:
Contran income taxes		5.5
Noncurrent payable to affiliates:
Contran – income taxes	70.1
Louisiana Pigment Company
Current receivables from affiliates:
Receivable from affiliates	8.9
Current payables to affiliates:
Payable to affiliates	16.2	14.7
VALHI, INC. | Contran | Credit Facility
Noncurrent payable to affiliates:
Payables to affiliate included in long-term debt	284.3	278.9
Other
Current receivables from affiliates:
Receivable from affiliates	$ 3.3	$ 2.8

Commitments and Contingencies -

Commitments and Contingencies - Lead Pigment Litigation-NL and Environmental Matters and Litigation - Additional Information (Detail) $ in Millions	12 Months Ended
	Dec. 31, 2017USD ($)Casessite	Dec. 31, 2016USD ($)	Dec. 31, 2015USD ($)	Dec. 31, 2014USD ($)
Commitments And Contingent Liabilities [Line Items]
Accrual for reasonably estimable environmental remediation and related matters	$ 117.5	$ 122.6	$ 120.4	$ 118.5
Other Environmental Cleanup Matters
Commitments And Contingent Liabilities [Line Items]
Accrual for reasonably estimable environmental remediation and related matters	5.5
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	$ 112
Number of sites associated with remediation and related costs | site	39
Number of sites for which NL not currently able to reasonably estimate range of costs | site	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	$ 154
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
California Lead Paint Litigation | NL
Commitments And Contingent Liabilities [Line Items]
Amount awarded to the plaintiff	$ 1,150

Commitments and Contingencie110

Commitments and Contingencies - Changes in Accrued Environmental Remediation and Related Costs (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Environmental Remediation Obligations [Abstract]
Balance at the beginning of the year	$ 122.6	$ 120.4	$ 118.5
Additions charged to expense, net	4.1	5.9	5.7
Payments, net	(9.1)	(3.7)	(3.5)
Changes in currency exchange rates and other	(0.1)		(0.3)
Balance at the end of the year	117.5	122.6	120.4
Amounts recognized in our Consolidated Balance Sheet at the end of the year:
Current liabilities				$ 6.8	$ 15.3	$ 11.7
Noncurrent liabilities				110.7	107.3	108.7
Total	$ 122.6	$ 120.4	$ 118.5	$ 117.5	$ 122.6	$ 120.4

Commitments and Contingencie111

Commitments and Contingencies - Other Litigation and Other Matters - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2017USD ($)CasesPlaintiffCustomer	Dec. 31, 2016USD ($)	Dec. 31, 2015USD ($)
Commitments And Contingent Liabilities [Line Items]
Rent expense	$ 16,300,000	$ 14,300,000	$ 14,700,000
Chemicals | Minimum | Various Supply and Services Agreements
Commitments And Contingent Liabilities [Line Items]
Long term master agreements expiring	2,018
Chemicals | Maximum | Various Supply and Services Agreements
Commitments And Contingent Liabilities [Line Items]
Long term master agreements expiring	2,021
Chemicals | TiO2 Product
Commitments And Contingent Liabilities [Line Items]
Sale of TiO2, number of customers | Customer	4,000
Chemicals | Customer Concentration Risk | Behr Process Corporation | Net Sales
Commitments And Contingent Liabilities [Line Items]
Concentration risk percentage		10.00%	10.00%
Component Products Segment | Customer Concentration Risk | Top Ten Customers | Net Sales
Commitments And Contingent Liabilities [Line Items]
Concentration risk percentage	44.00%	46.00%	48.00%
Component Products | Customer Concentration Risk | United States Postal Service | Net Sales | Security​ Products​ Reporting​ Unit​
Commitments And Contingent Liabilities [Line Items]
Concentration risk percentage	16.00%	14.00%	13.00%
Component Products | Customer Concentration Risk | Harley Davidson Inc | Net Sales | Security​ Products​ Reporting​ Unit​
Commitments And Contingent Liabilities [Line Items]
Concentration risk percentage		11.00%	12.00%
Real Estate Management And Development | Customer Concentration Risk | Net Sales | Minimum
Commitments And Contingent Liabilities [Line Items]
Concentration risk percentage	10.00%	10.00%	10.00%
Real Estate Management And Development | Customer Concentration Risk | Richmond Homes of Nevada | Net Sales
Commitments And Contingent Liabilities [Line Items]
Concentration risk percentage	37.00%	15.00%	27.00%
Real Estate Management And Development | Customer Concentration Risk | LV East Gibson, LLC | Net Sales
Commitments And Contingent Liabilities [Line Items]
Concentration risk percentage			17.00%
Real Estate Management And Development | Customer Concentration Risk | Prologis, L.P | Net Sales
Commitments And Contingent Liabilities [Line Items]
Concentration risk percentage			11.00%
Real Estate Management And Development | Customer Concentration Risk | Greystone Nevada LLC | Net Sales
Commitments And Contingent Liabilities [Line Items]
Concentration risk percentage	22.00%	34.00%
Real Estate Management And Development | Customer Concentration Risk | City Of Henderson | Net Sales
Commitments And Contingent Liabilities [Line Items]
Concentration risk percentage	11.00%		15.00%
Real Estate Management And Development | Customer Concentration Risk | Henderson Interchange Centers LLC | Net Sales
Commitments And Contingent Liabilities [Line Items]
Concentration risk percentage		12.00%
TiO2 | Chemicals | TiO2 Product | Net Sales
Commitments And Contingent Liabilities [Line Items]
Concentration risk percentage	94.00%	93.00%	92.00%
TiO2 | Chemicals | Customer Concentration Risk | Top Ten Customers | Net Sales
Commitments And Contingent Liabilities [Line Items]
Concentration risk percentage	34.00%	33.00%	34.00%
Feedstock Ore | Chemicals
Commitments And Contingent Liabilities [Line Items]
Minimum purchase commitments	$ 383,000,000
Other Supply And Service Contracts | Chemicals
Commitments And Contingent Liabilities [Line Items]
Minimum purchase commitments	$ 128,000,000
City of Henderson Redevelopment Agency | OPA
Commitments And Contingent Liabilities [Line Items]
Tax increment reimbursement percentage	75.00%
City of Henderson Redevelopment Agency | Maximum | OPA
Commitments And Contingent Liabilities [Line Items]
Reimbursement revenue	$ 209,000,000
Product Liability And Occupational Exposure Litigation Claims | NL
Commitments And Contingent Liabilities [Line Items]
Cases pending | Cases	101
Product Liability And Occupational Exposure Litigation Claims | NL | Pending Claims
Commitments And Contingent Liabilities [Line Items]
Number of plaintiffs involved | Plaintiff	574
Product Liability And Occupational Exposure Litigation Claims | NL | Administratively Dismissed Claims
Commitments And Contingent Liabilities [Line Items]
Number of plaintiffs involved | Plaintiff	8,676

Commitments and Contingencie112

Commitments and Contingencies - Approximate Percentage of TiO2 Sales by Volume for Segments (Detail) - TiO2 - Geographic Concentration Risk - Net Sales - Chemicals	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Europe
Schedule Of Sales Revenue By Business Segment [Line Items]
Concentration risk percentage	50.00%	51.00%	52.00%
North America
Schedule Of Sales Revenue By Business Segment [Line Items]
Concentration risk percentage	31.00%	29.00%	29.00%

Commitments and Contingencie113

Commitments and Contingencies - Future Minimum Payments under Non-cancellable Operating Leases (Detail) $ in Millions	Dec. 31, 2017USD ($)
Operating Leases Future Minimum Payments Due [Abstract]
2,018	$ 8.3
2,019	7.1
2,020	6.1
2,021	5.2
2,022	3.1
2023 and thereafter	24.9
Total	$ 54.7

Commitments and Contingencie114

Commitments and Contingencies - Future Minimum Payments under Non-cancellable Operating Leases (Parenthetical) (Detail) $ in Millions	Dec. 31, 2017USD ($)
Future Minimum Payments Under Non Cancelable Operating Leases With Initial Terms Of One Year Or More [Line Items]
Future minimum lease payments	$ 54.7
Leverkusen TiO2 production facility | Chemicals
Future Minimum Payments Under Non Cancelable Operating Leases With Initial Terms Of One Year Or More [Line Items]
Future minimum lease payments	$ 17

Financial Instruments - Summary

Financial Instruments - Summary of Valuation of Short-term Investments and Financial Instruments (Detail) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Marketable securities, current	$ 3	$ 4.4
Marketable securities, noncurrent	255.7	253.5
Interest rate swap		(3.1)
Quoted Prices in Active Markets (Level 1)
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Marketable securities, noncurrent	1.3	0.6
Significant Other Observable Inputs (Level 2)
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Marketable securities, current	3	4.4
Marketable securities, noncurrent	4.4	2.9
Interest rate swap		(3.1)
Significant Unobservable Inputs (Level 3)
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Marketable securities, noncurrent	$ 250	$ 250

Financial Instruments - Additio

Financial Instruments - Additional Information (Detail)	1 Months Ended	12 Months Ended
	Sep. 30, 2017USD ($)	Dec. 31, 2017USD ($)	Dec. 31, 2016USD ($)	Dec. 31, 2015USD ($)	Dec. 31, 2017EUR (€)
Financial Instrument At Fair Value [Line Items]
Fair value of interest rate swap contract, current and noncurrent			$ 3,100,000
Marketable securities		$ 255,700,000	253,500,000
Amalgamated Sugar Company LLC
Financial Instrument At Fair Value [Line Items]
Marketable securities		250,000,000	250,000,000
Interest Rate Swap
Financial Instrument At Fair Value [Line Items]
Fair value of interest rate swap contract, current			2,800,000
Kronos Worldwide, Inc. | 2014 Term Loan
Financial Instrument At Fair Value [Line Items]
Estimated market price of the notes			983
Principal amount of debt instrument			1,000
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 | €					€ 1,034
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
Kronos Worldwide, Inc. | Interest Rate Swap | Libor Rate
Financial Instrument At Fair Value [Line Items]
Derivative, type of instrument		pay-fixed/receive-variable interest rate swap
Interest rate swap, type of interest rate		fixed
Interest rate swap, fixed rate		2.016%			2.016%
Interest rate swap, floor rate		1.00%			1.00%
Interest rate swap, inception date		Aug. 31, 2015
Interest rate swap, effective date		Sep. 30, 2015
Notional amount currency forward contract				$ 344,800,000
Interest rate swap, notional amount decline each quarter		$ 875,000
Interest rate swap, notional amount decline commencing date		Dec. 31, 2015
Derivative maturity date		Feb. 29, 2020
Termination of interest rate swap contract paid	$ 3,300,000
Pretax unrealized loss recognized in other comprehensive income (loss) related to interest rate swap contract		$ 2,300,000	3,100,000	4,400,000
Interest rate swap, gains or losses representing hedge ineffectiveness		0
Fair value of interest rate swap contract, current and noncurrent			3,100,000
Kronos Worldwide, Inc. | Interest Rate Swap | Libor Rate | Accounts payable and accrued liabilities
Financial Instrument At Fair Value [Line Items]
Fair value of interest rate swap contract, current			2,900,000
Kronos Worldwide, Inc. | Interest Rate Swap | Libor Rate | Other Noncurrent Liabilities
Financial Instrument At Fair Value [Line Items]
Fair value of interest rate swap contract, noncurrent			200,000
Kronos Worldwide, Inc. | Interest Rate Swap | Libor Rate | Interest Expense
Financial Instrument At Fair Value [Line Items]
Reclassified from accumulated other comprehensive loss in to earnings		$ 2,100,000	$ 3,500,000	$ 900,000

Financial Instruments - Financi

Financial Instruments - Financial Instruments not Carried at Fair Value (Detail) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
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	$ 471.1
Long term debt, fair value	495.1
Kronos Worldwide, Inc. | Term Loan | 2014 Term Loan
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Long term debt, carrying amount		$ 335.9
Long term debt, fair value		334.6
VALHI, INC. | Contran Credit Facility
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Long term debt, carrying amount	284.3	278.9
Long term debt, fair value	284.3	278.9
VALHI, INC. | Term Loan | Snake River
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Long term debt, carrying amount	250	250
Long term debt, fair value	250	250
Tremont | Promissory Note
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Long term debt, carrying amount	13.1	14.5
Long term debt, fair value	13.1	14.5
BMI | Bank note payable | Meadows Term Loan
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Long term debt, carrying amount	18.8	8.4
Long term debt, fair value	19.7	8.5
LandWell | Unsecured Debt
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Long term debt, carrying amount	2.5	2.9
Long term debt, fair value	2.5	2.9
Carrying Amount
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Cash, cash equivalents and restricted cash equivalents	461.7	174.8
Deferred payment obligation	9.3	9
Fair Value
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Cash, cash equivalents and restricted cash equivalents	461.7	174.8
Deferred payment obligation	$ 9.3	$ 9

Recent Accounting Pronouncem118

Recent Accounting Pronouncements - Additional Information (Detail) - Defined Benefit Pension Plans - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Service cost	$ 11.4	$ 9.9
Total net periodic defined benefit pension costs	$ 29.9	$ 22.9

Quarterly Results of Operati119

Quarterly Results of Operations - Schedule of Quarterly Results of Operations (Detail) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Disclosure Quarterly Results Of Operations Schedule Of Quarterly Results Of Operations [Abstract]
Net sales	$ 495.9	$ 496.5	$ 481.7	$ 405.3	$ 390.5	$ 393.1	$ 387.5	$ 348.3	$ 1,879.4	$ 1,519.4	$ 1,487.9
Gross margin	185.3	161.5	141.2	114	101.4	85.7	64.7	48.4	602	300.2	228.4
Operating income	125.4	98.6	78.8	60.1	55.2	34.8	16.9	0.5	362.9	107.4	21.1
Net income (loss) from continuing operations	162.8	62.2	163.3	23.5	24.1	13.3	(2.4)	(14)	411.8	21	(149.4)
Amounts attributable to Valhi stockholders:
Income (loss) from continuing operations	141.1	44.2	117	14.4	15.5	7.3	(3.2)	(11.5)	316.7	8.1	(111.9)
Loss from discontinued operations	(1)	1.7	(108.2)	(1.7)	(6.3)	(4.3)	(5.5)	(7.9)	(109.2)	(24)	(21.7)
Net income (loss) attributable to Valhi stockholders	$ 140.1	$ 45.9	$ 8.8	$ 12.7	$ 9.2	$ 3	$ (8.7)	$ (19.4)	$ 207.5	$ (15.9)	$ (133.6)
Earnings per share:
Income (loss) from continuing operations	$ 0.41	$ 0.13	$ 0.34	$ 0.04	$ 0.05	$ 0.02	$ (0.01)	$ (0.04)	$ 0.93	$ 0.02	$ (0.33)
Loss from discontinued operations			(0.31)		(0.02)	(0.01)	(0.01)	(0.02)	(0.32)	(0.07)	(0.06)
Net income (loss) per share	$ 0.41	$ 0.13	$ 0.03	$ 0.04	$ 0.03	$ 0.01	$ (0.02)	$ (0.06)	$ 0.61	$ (0.05)	$ (0.39)

Quarterly Results of Operati120

Quarterly Results of Operations - Schedule of Quarterly Results of Operations (Parenthetical) (Detail) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Contract related intangible asset impairment								$ 5.1		$ 5.1
Business interruption insurance proceeds					$ 0.9		$ 1.4	$ 2		4.3
Current Income Tax Expense (Benefit)									$ 125.8	45	$ 18.4
Deferred income taxes expense (benefit)									(245.8)	(26.4)	89.1
Non-cash income tax expense related to uncertain tax positions					7.2
Loss on prepayment of debt		$ 7.1							7.1
Current income tax expense provisional pursuant to transition tax	$ 76.2								76.2
Deferred income tax benefit from change in enacted tax rate									77.1
Valuation allowance									(205.4)	(2.2)	$ 159
Waste Management
Out of period adjustment to transaction costs related to proposed sale					4.3
Out of period adjustment to transaction costs net of tax related to proposed sale					2.7
Canada - Germany APA
Non-cash income tax expense related to uncertain tax positions		8.1							$ 8.6
U.S. – Canada APA		(11.8)
Kronos Worldwide, Inc. | US-Canada APA
Current Income Tax Expense (Benefit)					2.2	$ (5.6)
U.S. – Canada APA										$ (3.4)
Non Cash Deferred Income Tax Benefit | Deferred Income Tax Liability | U.S. Federal Corporate Income Tax Rate
Deferred income tax benefit from change in enacted tax rate	77.1
Aggregate provisional non-cash deferred income tax expense (benefit)	5.3
Valuation Allowance of Deferred Tax Assets | One Non-U.S. subsidiary | Expected Future Periods Net Operating Loss Utilization | Non Cash Deferred Income Tax Benefit
Valuation allowance	(18.7)
Kronos Worldwide, Inc. | Valuation Allowance of Deferred Tax Assets | Germany and Belgium | Current Periods Net Operating Loss Utilization | Non Cash Deferred Income Tax Benefit
Deferred income taxes expense (benefit)					$ (4.3)	$ (0.8)	$ 2.9
Kronos Worldwide, Inc. | Valuation Allowance of Deferred Tax Assets | Germany and Belgium | Expected Future Periods Net Operating Loss Utilization | Non Cash Deferred Income Tax Benefit
Deferred income taxes expense (benefit)	(16.3)	$ (7.8)		$ (5)
Kronos Worldwide, Inc. | Valuation Allowance of Deferred Tax Assets | One Non-U.S. subsidiary | Expected Future Periods Net Operating Loss Utilization | Non Cash Deferred Income Tax Benefit
Deferred income taxes expense (benefit)			$ 157.6
Valuation allowance	$ (18.7)