Income Taxes - Components of Net Deferred Income Taxes (Detail) - USD ($) $ in Millions |
Dec. 31, 2015 |
Dec. 31, 2014 |
|---|---|---|
| Income Tax Disclosure [Abstract] | ||
| Inventories, Assets | $ 3.2 | $ 4.6 |
| Accrued OPEB costs, Assets | 2.0 | 2.4 |
| Accrued pension cost, Assets | 39.4 | 47.6 |
| Currency revaluation on intercompany debt, Assets | 18.6 | 5.6 |
| Other accrued liabilities and deductible differences, Assets | 19.4 | 13.7 |
| Tax loss and tax credit carryforwards, Assets | 157.4 | 163.3 |
| Valuation allowance, Assets | (168.9) | (0.1) |
| Adjusted gross deferred tax assets | 71.1 | 237.1 |
| Netting by tax jurisdiction, Assets | (57.1) | (69.8) |
| Net noncurrent deferred tax asset | 14.0 | 167.3 |
| Inventories, Liabilities | (3.5) | (4.9) |
| Property and equipment, Liabilities | (59.3) | (67.5) |
| Other taxable differences, Liabilities | (0.5) | (0.9) |
| Tax on unremitted earnings of non-U.S. subsidiaries, Liabilities | (1.9) | (2.6) |
| Adjusted gross deferred tax liabilities | (65.2) | (75.9) |
| Netting by tax jurisdiction, Liabilities | 57.1 | 69.8 |
| Net noncurrent deferred tax liability | $ (8.1) | $ (6.1) |