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Income Taxes (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2021
Jun. 30, 2020
Income Taxes [Line Items]        
Income tax expense (benefit) $ 0.9 $ (3.0) $ (9.2) $ (18.9)
Approximate tax rate (23.70%) 5.10%    
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  
State | New York | Earliest tax year        
Income Taxes [Line Items]        
Tax year being audited in income tax examination     2016  
State | New York | Latest tax year        
Income Taxes [Line Items]        
Tax year being audited in income tax examination     2018  
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