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Income Taxes - Narrative (Details)
$ in Millions
 12 Months Ended
Dec. 31, 2021
USD ($)
divestiture
Dec. 31, 2020
USD ($)
Jun. 30, 2020
USD ($)
Jun. 30, 2019
USD ($)
Jun. 30, 2018
USD ($)
Income Tax Contingency [Line Items]          
Tax expense (benefit) related to operating loss carryback, CARES Act $ (2.7) $ (20.7)      
Capital loss for the tax basis on stock 187.0        
Overall capital gain on divestitures $ 282.3        
Number of divestitures | divestiture 3        
Overall net tax benefit of divestitures $ 23.4        
Decrease in valuation allowance 3.5        
Unrecognized tax benefits $ 32.1 $ 37.6 $ 23.5 $ 21.7 $ 24.9
State and local jurisdictions | California | Earliest tax year          
Income Tax Contingency [Line Items]          
Tax year being audited in income tax examination 2017        
State and local jurisdictions | California | Latest tax years          
Income Tax Contingency [Line Items]          
Tax year being audited in income tax examination 2018        
State and local jurisdictions | New Jersey | Earliest tax year          
Income Tax Contingency [Line Items]          
Tax year being audited in income tax examination 2013        
State and local jurisdictions | New Jersey | Latest tax years          
Income Tax Contingency [Line Items]          
Tax year being audited in income tax examination 2017        
Foreign | Switzerland | Earliest tax year          
Income Tax Contingency [Line Items]          
Tax year being audited in income tax examination 2015        
Foreign | Switzerland | Latest tax years          
Income Tax Contingency [Line Items]          
Tax year being audited in income tax examination 2016