Accounts Payable and Accrued Liabilities - Components of Accounts Payable and Accrued Liabilities (Detail) - USD ($) $ in Millions |
Dec. 31, 2015 |
Dec. 31, 2014 |
|---|---|---|
| Payables And Accruals [Abstract] | ||
| Accounts payable | $ 96.1 | $ 121.4 |
| Accrued sales discounts and rebates | 18.9 | 14.8 |
| Employee benefits | 14.2 | 24.6 |
| Accrued workforce reduction costs | 5.3 | |
| Interest rate swap contract | 3.3 | |
| Accrued interest | 0.2 | 0.5 |
| Other | 34.7 | 41.3 |
| Total | $ 172.7 | $ 202.6 |