Investment in TiO2 Manufacturing Joint Venture - Components of Net Distributions from LPC (Detail) - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2015 |
Dec. 31, 2014 |
Dec. 31, 2013 |
|
| Investment In Joint Venture [Line Items] | |||
| Net distributions | $ 6.5 | $ 10.6 | $ 10.9 |
| Louisiana Pigment Company, L.P. | |||
| Investment In Joint Venture [Line Items] | |||
| Distributions from LPC | 48.2 | 48.0 | 70.7 |
| Contributions to LPC | (41.7) | (37.4) | (59.8) |
| Net distributions | $ 6.5 | $ 10.6 | $ 10.9 |