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Income Taxes - Reconciliation of Income Tax Rate (Details) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
Amount [Abstract] |  |  |
Tax provision at U.S. statutory rate | $ 36.9 | $ 37.9 | $ 44.7
Foreign income tax rate differential | (16.2) | (15.4) | 9.0
Domestic production deduction | (1.5) | (1.0) | 0.0
Adjustments to valuation allowances | 1.4 | 0.4 | 1.2
Other, net | 1.0 | (1.4) | (1.9)
Provision for income taxes | $ 21.6 | $ 20.5 | $ 53.0
Percent [Abstract] |  |  |
Tax provision at U.S. statutory rate | 35.00% | 35.00% | 35.00%
Foreign income tax rate differential | (15.40%) | (14.20%) | 7.00%
Domestic production deduction | (1.40%) | (0.90%) | (0.00%)
Adjustments to valuation allowances | 1.30% | 0.40% | 0.90%
Other, net | 1.00% | (1.40%) | (1.40%)
Provision for income taxes | 20.50% | 18.90% | 41.50%

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