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Income Taxes - Narrative (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Operating Loss Carryforwards [Line Items]    
Discrete tax benefit in connection with a foreign restructuring plan $ 41.0  
Valuation allowance 36.3 $ 26.4
Unrecognized tax benefits that would impact effective tax rate 68.2  
Unrecognized tax benefits, income tax penalties and interest expense 1.8  
Accrued interest and penalties 8.7 $ 6.9
Expected decrease of unrecognized tax benefits 6.3  
Domestic Tax Authority    
Operating Loss Carryforwards [Line Items]    
Operating loss carryforwards 19.0  
Valuation allowance 15.4  
Domestic Tax Authority | Research Tax Credit Carryforward    
Operating Loss Carryforwards [Line Items]    
Tax credit carryforward 5.0  
State and Local Jurisdiction    
Operating Loss Carryforwards [Line Items]    
Operating loss carryforwards 33.7  
Foreign Tax Authority    
Operating Loss Carryforwards [Line Items]    
Operating loss carryforwards 65.6  
Valuation allowance $ 20.9