Accumulated Other Comprehensive Loss - Components of and Changes in Accumulated Other Comprehensive Loss, Net of Tax (Detail) - USD ($)
$ in Millions |
3 Months Ended |
9 Months Ended |
Sep. 30, 2016 |
Sep. 30, 2015 |
Sep. 30, 2016 |
Sep. 30, 2015 |
| Accumulated Other Comprehensive Income (Loss) [Line Items] |
|
|
|
|
|
|
|
| Beginning Balance |
|
|
|
$ 2,453.8
|
|
$ 2,263.1
|
|
| Amounts reclassified from accumulated other comprehensive loss |
|
$ (0.6)
|
$ 3.1
|
(2.3)
|
|
(2.2)
|
|
| Net current-period other comprehensive loss |
|
|
|
0.3
|
|
(32.4)
|
|
| Ending Balance |
|
2,360.2
|
2,404.3
|
2,360.2
|
|
2,404.3
|
|
| Foreign Currency Adjustments [Member] |
|
|
|
|
|
|
|
| Accumulated Other Comprehensive Income (Loss) [Line Items] |
|
|
|
|
|
|
|
| Beginning Balance |
|
|
|
(13.3)
|
|
31.0
|
|
| Amounts classified into accumulated other comprehensive loss |
|
|
|
0.9
|
|
(29.0)
|
|
| Net current-period other comprehensive loss |
|
|
|
0.9
|
|
(29.0)
|
|
| Ending Balance |
|
(12.4)
|
2.0
|
(12.4)
|
|
2.0
|
|
| Derivative Hedging Gains (Losses) [Member] |
|
|
|
|
|
|
|
| Accumulated Other Comprehensive Income (Loss) [Line Items] |
|
|
|
|
|
|
|
| Beginning Balance |
|
|
|
2.1
|
|
(0.6)
|
|
| Amounts classified into accumulated other comprehensive loss |
|
|
|
(7.3)
|
|
2.6
|
|
| Amounts reclassified from accumulated other comprehensive loss |
|
|
|
2.8
|
|
(1.5)
|
|
| Net current-period other comprehensive loss |
|
|
|
(4.5)
|
|
1.1
|
|
| Ending Balance |
|
(2.4)
|
0.5
|
(2.4)
|
|
0.5
|
|
| Defined benefit plan items [Member] |
|
|
|
|
|
|
|
| Accumulated Other Comprehensive Income (Loss) [Line Items] |
|
|
|
|
|
|
|
| Beginning Balance |
[1] |
|
|
(41.3)
|
|
(37.1)
|
|
| Amounts classified into accumulated other comprehensive loss |
[1] |
|
|
9.0
|
|
(3.8)
|
|
| Amounts reclassified from accumulated other comprehensive loss |
|
(1.8)
|
3.6
|
(5.1)
|
[1] |
(0.7)
|
[1] |
| Net current-period other comprehensive loss |
[1] |
|
|
3.9
|
|
(4.5)
|
|
| Ending Balance |
[1] |
(37.4)
|
(41.6)
|
(37.4)
|
|
(41.6)
|
|
| Accumulated Other Comprehensive Loss [Member] |
|
|
|
|
|
|
|
| Accumulated Other Comprehensive Income (Loss) [Line Items] |
|
|
|
|
|
|
|
| Beginning Balance |
|
|
|
(52.5)
|
|
(6.7)
|
|
| Amounts classified into accumulated other comprehensive loss |
|
|
|
2.6
|
|
(30.2)
|
|
| Amounts reclassified from accumulated other comprehensive loss |
|
|
|
(2.3)
|
|
(2.2)
|
|
| Net current-period other comprehensive loss |
|
|
|
0.3
|
|
(32.4)
|
|
| Ending Balance |
|
$ (52.2)
|
$ (39.1)
|
$ (52.2)
|
|
$ (39.1)
|
|
|
|