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Income Taxes - Reconciliation of Statutory Tax Rate to Effective Tax Rate (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Reconciliation in dollars [Abstract]      
Statutory U.S. federal income tax $ 70.0 $ 61.2 $ 44.8
State income taxes, net of federal benefit 1.1 1.1 1.7
Foreign repatriation, net of foreign tax credits 0.0 13.5 (16.0)
Foreign tax differential (10.0) (12.6) (12.3)
Change in valuation allowances 2.5 (17.7) 20.4
Uncertain tax positions 59.7 10.9 4.7
Subpart F income 1.9 1.9 1.5
Manufacturing deduction (1.6) (3.7) 0.1
Goodwill on disposal of business 0.0 7.5 0.0
Permanent and other 1.8 2.8 4.2
Effective income tax provision $ 125.4 $ 64.9 $ 49.1
Reconciliation in percentages [Abstract]      
Statutory U.S. federal income tax (percentage) 35.00% 35.00% 35.00%
State income taxes, net of federal benefit (percentage) 0.60% 0.60% 1.30%
Foreign repatriation, net of foreign tax credits (percentage) 0.00% 7.70% (12.60%)
Foreign tax differential (percentage) (5.00%) (7.20%) (9.60%)
Change in valuation allowance (percentage) 1.20% (10.00%) 15.90%
Uncertain tax positions (percentage) 29.80% 6.10% 3.70%
Subpart F income (percentage) 1.00% 1.10% 1.20%
Manufacturing deduction (percentage) (0.80%) (2.10%) (0.00%)
Goodwill on disposal of business (percentage) 0.00% 4.20% 0.00%
Permanent and other (percentage) 0.90% 1.70% 3.50%
Effective income tax provision (percentage) 62.70% 37.10% 38.40%