Investment in Kronos Worldwide, Inc. - Selected Financial Information of Kronos Income Statement (Detail) - Kronos - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2016 |
Dec. 31, 2015 |
Dec. 31, 2014 |
|
| Schedule Of Equity Method Investments [Line Items] | |||
| Net sales | $ 1,364.3 | $ 1,348.8 | $ 1,651.9 |
| Cost of sales | 1,107.3 | 1,156.5 | 1,302.2 |
| Income (loss) from operations | 81.1 | (1.1) | 149.7 |
| Income tax expense | 17.9 | 142.8 | 34.5 |
| Net income (loss) | $ 43.3 | $ (173.6) | $ 99.2 |