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Commitments and Contingencies - Summary of Approximate Percentage of TiO2 Sales by Volume (Detail) - Net Sales - Geographic Concentration Risk | 12 Months Ended
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Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
European |  |  |
Schedule Of Net Sales By Geographical Segment [Line Items] |  |  |
Approximate percent sales by volume | 51.00% | 52.00% | 50.00%
North America |  |  |
Schedule Of Net Sales By Geographical Segment [Line Items] |  |  |
Approximate percent sales by volume | 29.00% | 29.00% | 33.00%

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