Commitments and Contingencies - Summary of Future Minimum Payments Under Noncancellable Operating Leases (Detail) $ in Millions |
Dec. 31, 2015
USD ($)
|
|---|---|
| Commitments And Contingencies Disclosure [Abstract] | |
| 2016 | $ 11.0 |
| 2017 | 8.0 |
| 2018 | 5.1 |
| 2019 | 4.3 |
| 2020 | 3.5 |
| 2021 and thereafter | 23.7 |
| Total | $ 55.6 |