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Income Taxes (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2016 | Jun. 30, 2015 | Jun. 30, 2016 | Jun. 30, 2015
Income Tax Disclosure [Abstract] |  |  |  |
Tax expense (benefit) | $ 17.0 | $ 9.2 | $ 23.9 | $ 21.7
Effective tax rate | 28.60% | 25.50% | 27.40% | 27.10%
Income Tax Benefit Executive Retirement & Related Costs |  | $ 4.0 |  |
Executive retirement and related costs |  | $ 10.9 |  | $ 10.9
Current income tax benefit, restructuring |  |  | $ 7.4 |
Restructuring and related charges | $ (1.5) |  | $ 21.4 |

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