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Equity Schedule of Series A Equity Units (Details) - USD ($)
shares in Thousands, $ in Millions
 3 Months Ended 9 Months Ended
Apr. 19, 2021
Sep. 30, 2021
Sep. 30, 2021
Sep. 30, 2020
 [1]
Schedule of Series A Equity Units [Line Items]        
Purchase contract liability, net of fees and payments(1) $ 168.8 $ 145.4 [1] $ 145.4 [1] $ 0.0
Payments of Stock Issuance Costs 27.0      
Equity Units Stock Purchase Contract Liability Payments   $ 16.7 $ 24.5  
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.