|
Commitments and Contingencies - Summary of Changes in Warranty Liabilities (Detail) (USD $)
In Millions, unless otherwise specified |
3 Months Ended | |
|---|---|---|
|
Mar. 31, 2015
|
Mar. 31, 2014
|
|
| Movement in Standard and Extended Product Warranty, Increase (Decrease) [Roll Forward] | ||
| Balance at January 1 | $ 9.1 | $ 8.4 |
| Provisions to expense | 1.9 | 1.7 |
| Payments | (2.1) | (1.6) |
| Balance at March 31 | $ 8.9 | $ 8.5 |