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Income Taxes (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Income Taxes [Line Items]        
Income tax expense (benefit) $ 15.2 $ (28.5) $ 6.0 $ (47.4)
Approximate tax rate 38.20% 65.20% (44.10%) 20.30%
State | California | Earliest tax year        
Income Taxes [Line Items]        
Tax year being audited in income tax examination     2017  
State | California | Latest tax year        
Income Taxes [Line Items]        
Tax year being audited in income tax examination     2018  
State | New Jersey | Earliest tax year        
Income Taxes [Line Items]        
Tax year being audited in income tax examination     2013  
State | New Jersey | Latest tax year        
Income Taxes [Line Items]        
Tax year being audited in income tax examination     2017  
Foreign | Germany | Earliest tax year        
Income Taxes [Line Items]        
Tax year being audited in income tax examination     2013  
Foreign | Germany | Latest tax year        
Income Taxes [Line Items]        
Tax year being audited in income tax examination     2015  
Foreign | Switzerland | Earliest tax year        
Income Taxes [Line Items]        
Tax year being audited in income tax examination     2015  
Foreign | Switzerland | Latest tax year        
Income Taxes [Line Items]        
Tax year being audited in income tax examination     2016