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Investment in Kronos Worldwide, Inc. - Selected Financial Information of Kronos Balance Sheet (Detail) - Kronos - USD ($) $ in Millions | Dec. 31, 2019 | Dec. 31, 2018
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Schedule Of Equity Method Investments [Line Items] |  |
Current assets | $ 1,219.7 | $ 1,201.4
Property and equipment, net | 490.6 | 486.4
Investment in TiO2 joint venture | 90.2 | 81.3
Other noncurrent assets | 165.3 | 129.0
Total assets | 1,965.8 | 1,898.1
Current liabilities | 270.6 | 233.4
Long-term debt | 444.0 | 455.1
Accrued pension costs | 307.4 | 262.9
Other noncurrent liabilities | 127.7 | 106.9
Stockholders' equity | 816.1 | 839.8
Total liabilities and stockholders' equity | $ 1,965.8 | $ 1,898.1

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