| **Pay vs Performance Disclosure - USD ($) $ in Millions** | 3 Months Ended | 9 Months Ended |
|-----------------------------------------------------------|----------------|----------------|
||
| **Pay vs Performance Disclosure**                         |           |           |   |   |   |   |   |   |
| Net Income (Loss)                                         | $ 65.4         | $ 209.3        | $ 80.4 | $ 61.0 | $ 143.0 | $ 155.7 | $ 355.1 | $ 359.7 |

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| - References
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| - Definition
The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.
+ References
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