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Investment in TiO2 Manufacturing Joint Venture and Other Assets - Components of Net Capitalized Permit Costs (Detail) - USD ($) $ in Millions | Dec. 31, 2015 | Dec. 31, 2014
--- | --- | ---
Other Noncurrent Assets [Line Items] |  |
Net capitalized permit costs | $ 48.1 | $ 53.2
Permits Subject to Amortization |  |
Other Noncurrent Assets [Line Items] |  |
Net capitalized permit costs | 47.3 | 53.2
Permits Not Subject to Amortization |  |
Other Noncurrent Assets [Line Items] |  |
Net capitalized permit costs | 0.8 |
LLRW License - (expires in 2024) | Permits Subject to Amortization |  |
Other Noncurrent Assets [Line Items] |  |
Net capitalized permit costs | 44.7 | 49.6
Byproduct License - (expires in 2018) | Permits Subject to Amortization |  |
Other Noncurrent Assets [Line Items] |  |
Net capitalized permit costs | 2.5 | 3.5
Other - (expires 2015 - 2024) | Permits Subject to Amortization |  |
Other Noncurrent Assets [Line Items] |  |
Net capitalized permit costs | $ 0.1 | $ 0.1

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- Definition Net amount of noncurrent portion of other deferred costs capitalized at the end of the reporting period. Does not include deferred finance costs or deferred acquisition costs of insurance companies. + References No definition available. + Details
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- Definition Other noncurrent assets. + References No definition available. + Details
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- Details
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- Details
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- Details
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- Details
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