Investment in TiO2 Manufacturing Joint Venture - Components of Net Cash Distributions from (Contributions to) LPC (Detail) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Schedule of Equity Method Investments [Line Items]
Net distributions (contributions)	$ (10.5)	$ 3.8	$ (12.8)
Louisiana Pigment Company, L.P.
Schedule of Equity Method Investments [Line Items]
Distributions from LPC	58.3	28.5	32.7
Contributions to LPC	(68.8)	(24.7)	(45.5)
Net distributions (contributions)	$ (10.5)	$ 3.8	$ (12.8)

Amount of distribution received from equity method investee for return on investment, classified as operating activities. Excludes distribution for return of investment, classified as investing activities.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
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Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
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