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Equity Schedule of Series A Equity Units (Details) - USD ($)
shares in Thousands, $ in Millions
 6 Months Ended
Apr. 19, 2021
Jun. 30, 2021
Jun. 30, 2020
 [1]
Schedule of Series A Equity Units [Line Items]      
Purchase contract liability, net of fees and payments(1) $ 168.8 $ 161.5 [1] $ 0.0
Payments of Stock Issuance Costs 27.0    
Equity Units Stock Purchase Contract Liability Payments   $ 7.8  
Preferred Stock      
Schedule of Series A Equity Units [Line Items]      
Payments of Stock Issuance Costs 22.5    
Purchase Contract Liability      
Schedule of Series A Equity Units [Line Items]      
Payments of Stock Issuance Costs $ 4.5    
Series A Corporate Units      
Schedule of Series A Equity Units [Line Items]      
Stock Issued During Period, Shares, New Issues 8,625    
Net Proceeds from Sale $ 835.5    
Corporate Units Contract Annual Rate 7.75%    
[1] Refer to Note 5, "Equity," for additional information.