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Pensions - Summary of Components of Net Postretirement Pensions Expense (Detail) (USD $)
In Millions, unless otherwise specified |
3 Months Ended | |
|---|---|---|
|
Mar. 31, 2015
|
Mar. 31, 2014
|
|
| U.S. Benefit Plans | ||
| Defined Benefit Plan Disclosure [Line Items] | ||
| Defined Benefit Plan, Benefits Paid | $ 1.6 | $ 1.5 |
| Service cost | 0 | 0 |
| Interest cost | 1.9 | 2.0 |
| Amortization of actuarial loss | 1.6 | 1.2 |
| Expected return on plan assets | (2.5) | (2.3) |
| Net postretirement pension expense | 1.0 | 0.9 |
| Defined Benefit Plans, Estimated Future Employer Contributions in Current Fiscal Year | 7.8 | |
| Non-U.S. Benefit Plan | ||
| Defined Benefit Plan Disclosure [Line Items] | ||
| Defined Benefit Plan, Benefits Paid | 1.1 | 0.4 |
| Service cost | 0.1 | 0.1 |
| Interest cost | 0.5 | 0.7 |
| Amortization of actuarial loss | 0.2 | 0.1 |
| Expected return on plan assets | (0.7) | (0.9) |
| Net postretirement pension expense | 0.1 | 0 |
| Defined Benefit Plans, Estimated Future Employer Contributions in Current Fiscal Year | $ 1.2 | |