Accounts and Other Receivables - Accounts and Other Receivables (Detail) - USD ($) $ in Millions |
Dec. 31, 2015 |
Dec. 31, 2014 |
|---|---|---|
| Accounts Notes And Loans Receivable [Line Items] | ||
| Allowance for doubtful accounts | $ (1.1) | $ (1.6) |
| Total | 218.3 | 260.2 |
| Trade receivables | ||
| Accounts Notes And Loans Receivable [Line Items] | ||
| Accounts and other receivables | 194.8 | 230.9 |
| Recoverable VAT and other receivables | ||
| Accounts Notes And Loans Receivable [Line Items] | ||
| Accounts and other receivables | 17.8 | 23.4 |
| Refundable income taxes | ||
| Accounts Notes And Loans Receivable [Line Items] | ||
| Refundable income taxes | $ 6.8 | $ 7.5 |