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Investment in TiO2 Manufacturing Joint Venture and Other Assets - Summary of Financial Information (Detail) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Financial Information [Line Items] |  |  |
Current assets | $ 1,475.4 | $ 1,589.5 |
Property and equipment, net | 517.3 | 523.8 | $ 563.6
Total assets | 2,737.0 | 2,835.7 | 3,005.2
Other liabilities, primarily current | 30.1 | 22.9 |
Total liabilities and equity | 2,737.0 | 2,835.7 |
Net sales | 1,977.1 | 2,266.2 | 2,335.4
Cost of sales | 1,676.5 | 1,732.1 | 1,716.2
General and administrative | 277.4 | 304.0 | 311.9
Total costs and expenses | 1,996.6 | 2,096.3 | 2,077.6
Net income | 2.9 | 136.1 | 197.7
Louisiana Pigment Company |  |  |
Financial Information [Line Items] |  |  |
Current assets | 118.5 | 122.2 |
Property and equipment, net | 148.4 | 147.4 |
Total assets | 266.9 | 269.6 |
Other liabilities, primarily current | 42.1 | 41.2 |
Partners' equity | 224.8 | 228.4 |
Total liabilities and equity | 266.9 | 269.6 |
Net sales | 463.4 | 451.5 | 378.2
Cost of sales | 463.0 | 451.1 | 377.8
General and administrative | 0.4 | 0.4 | 0.4
Total costs and expenses | 463.4 | 451.5 | 378.2
Louisiana Pigment Company | Kronos |  |  |
Financial Information [Line Items] |  |  |
Net sales | 231.7 | 225.6 | 188.6
Louisiana Pigment Company | Venator Investments LLC |  |  |
Financial Information [Line Items] |  |  |
Net sales | $ 231.7 | $ 225.9 | $ 189.6

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