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Income Taxes - Schedule of Loss Before Income Taxes (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Noncontrolling Interest [Abstract]      
United States $ (496.5) $ (272.4) $ (388.9)
International (0.1) 0.5  
Total $ (496.6) $ (271.9) $ (388.9)