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Income Taxes - Narrative (Details) - USD ($)
 12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Operating Loss Carryforwards [Line Items]      
Federal income tax at statutory rate (as a percent) 21.00% 35.00% 35.00%
Income tax expense, Tax Reform Act mandatory repatriation of undistributed foreign subdidiary earnings and profits   $ 54,000,000  
Tax cuts and jobs act of 2017 measurement period adjustment to transition tax obligation $ 3,200,000    
Tax cuts and jobs act of 2017 total transition tax obligation 57,200,000    
Tax cuts and jobs act 2017, change in tax rate, tax benefit $ 11,700,000    
Effective income tax rate reconciliation tax cuts and jobs act of 2017 percent 0.00%    
Tax cuts and jobs act of 2017 related to GILTI provisional income tax expense $ 0    
Tax cuts and jobs act of 2017 base erosion and anti abuse tax income tax expense 400,000    
Tax cuts and jobs act of 2017 change in net operating losses and valuation allowance 30,400,000    
Change in valuation allowance, deferred tax asset 1,300,000    
Tax cuts and jobs act, deferred tax assets 1,700,000    
Tax cuts and jobs act, unremitted earnings of non-United States subsidiaries 322,000,000    
Tax cuts and jobs act, additional unremitted earnings of non-United States subsidiaries 357,000,000    
Tax cuts and jobs act, deferred tax liability   0  
Change to gross unrecognized tax expense (benefits) including interest and penalties (7,600,000) (1,700,000) $ 4,900,000
Uncertain tax liabilities interest and penalties (1,000,000) 300,000 2,800,000
Uncertain tax liabilities interest and penalties accrued 6,700,000 7,700,000  
Unrecognized tax benefits that would impact effective tax rate 7,200,000 $ 13,100,000 $ 14,600,000
Unrecognized tax benefits possibly reduced from audit resolutions during the next 12 months 8,400,000    
Domestic Tax Authority      
Operating Loss Carryforwards [Line Items]      
Net operating loss carryforwards 67,400,000    
Net operating loss carryforwards with expiration period $ 45,200,000    
Operating loss carryforwards expiration period 2036    
Net operating loss carryforwards not subject to any time restrictions for future use $ 22,200,000    
Maximum annual utilization percentage of indefinite lived loss carryforwards 80.00%    
Interest expense carryforwards $ 35,800,000    
Maximum annual utilization percentage of interst expense carryforwards 30.00%    
State and Local Jurisdiction      
Operating Loss Carryforwards [Line Items]      
Net operating loss carryforwards $ 692,300,000    
Operating loss carryforwards expiration period 2038    
Non-U.S. Tax Authority      
Operating Loss Carryforwards [Line Items]      
Net operating loss carryforwards $ 329,200,000    
Net operating loss carryforwards, valuation allowance 146,800,000    
U.K      
Operating Loss Carryforwards [Line Items]      
Deferred tax assets, valuation allowance $ 12,300,000