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Income Taxes - Net Operating Loss and Tax Credit Carryforwards (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2014
Dec. 31, 2015
Valuation Allowance [Abstract]    
Valuation allowance $ 80.7 $ 182.8
Deferred tax liabilities, separation-related adjustments $ 10.1  
Deferred tax assets, valuation allowance, judgment regarding the realizability of the beginning of the year deferred tax asset   32.6
Income Tax Credits [Abstract]    
Undistributed earnings of foreign subsidiaries   1,800.0
State and Local Jurisdiction    
Net Operating Loss Carryforwards [Abstract]    
Operating loss carryforwards, subject to expiration   111.3
Foreign Tax Authority    
Net Operating Loss Carryforwards [Abstract]    
Operating loss carryforwards   396.7
Operating loss carryforwards, subject to expiration   113.1
Operating Loss Carryforwards, Not Subject to Expiration   283.6
Domestic Tax Authority [Member]    
Net Operating Loss Carryforwards [Abstract]    
Operating loss carryforwards   74.3
Operating Loss Carryforwards, Subject to Expiration in 5-10 years   12.1
Operating Loss Carryforwards, Subject to Expiration in 10-20 years   62.2
Research Tax Credit Carryforward    
Income Tax Credits [Abstract]    
Tax credit carryforward amount   9.8
Foreign Tax Credit Carryforward    
Income Tax Credits [Abstract]    
Tax credit carryforward amount   3.8
State Tax Credit Carryforward    
Income Tax Credits [Abstract]    
Tax credit carryforward amount   $ 10.3