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Investment in TiO2 Manufacturing Joint Venture - Components of Net Cash Distributions from (Contributions to) LPC (Detail) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Schedule of Equity Method Investments [Line Items] |  |  |
Net distributions (contributions) | $ 3.1 | $ (10.5) | $ 3.8
Louisiana pigment company, L.P |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Distributions from LPC | 52.8 | 58.3 | 28.5
Contributions to LPC | (49.7) | (68.8) | (24.7)
Net distributions (contributions) | $ 3.1 | $ (10.5) | $ 3.8

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