Segment and Geographical Data - Schedule of Total Assets, Long-Lived Assets and Net Assets by Geographic Area (Detail) - USD ($) $ in Millions |
Dec. 31, 2016 |
Dec. 31, 2015 |
Dec. 31, 2014 |
Dec. 31, 2013 |
|---|---|---|---|---|
| Segment Reporting Information [Line Items] | ||||
| Total assets | $ 3,190.5 | $ 3,157.6 | $ 3,203.4 | |
| Noncurrent assets | 2,398.8 | 2,421.6 | ||
| Net assets | 679.2 | 639.0 | $ 524.9 | $ 325.0 |
| United States of America [Member] | ||||
| Segment Reporting Information [Line Items] | ||||
| Total assets | 2,571.7 | 2,592.4 | ||
| Noncurrent assets | 2,076.8 | 2,111.1 | ||
| Net assets | 258.0 | 264.4 | ||
| Europe [Member] | ||||
| Segment Reporting Information [Line Items] | ||||
| Total assets | 313.5 | 304.9 | ||
| Noncurrent assets | 171.6 | 173.4 | ||
| Net assets | 213.1 | 211.2 | ||
| Other foreign [Member] | ||||
| Segment Reporting Information [Line Items] | ||||
| Total assets | 305.3 | 260.3 | ||
| Noncurrent assets | 150.4 | 137.1 | ||
| Net assets | 208.1 | 163.4 | ||
| Total foreign [Member] | ||||
| Segment Reporting Information [Line Items] | ||||
| Total assets | 618.8 | 565.2 | ||
| Noncurrent assets | 322.0 | 310.5 | ||
| Net assets | $ 421.2 | $ 374.6 |