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Equity Schedule of Stock by Class - Preferred (Details) - USD ($)
$ / shares in Units, $ in Millions
 3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Dec. 31, 2020
Class of Stock [Line Items]      
Preferred Stock, Shares Outstanding 440,000   440,000
Shares outstanding $ 5,931.6   $ 5,752.2
Series A Preferred Stock      
Class of Stock [Line Items]      
Preferred Stock, Liquidation Preference Per Share $ 1,000.00    
Preferred Stock, Shares Outstanding 400,000    
Dividends Declared Per Share $ 28.25 $ 28.25  
Series B Preferred Stock      
Class of Stock [Line Items]      
Preferred Stock, Liquidation Preference Per Share $ 25,000.00    
Preferred Stock, Shares Outstanding 20,000    
Dividends Declared Per Share $ 812.50 $ 812.50  
Series B-1 Preferred Stock      
Class of Stock [Line Items]      
Preferred Stock, Shares Outstanding 20,000    
Preferred Stock | Series A Preferred Stock      
Class of Stock [Line Items]      
Shares outstanding $ 393.9   393.9
Preferred Stock | Series B Preferred Stock      
Class of Stock [Line Items]      
Shares outstanding $ 486.1   $ 486.1