v3.19.3.a.u2
Stockholders' Equity and Accumulated Other Comprehensive Income (Loss) (Preferred Stock Issuances) (Details) - USD ($)
$ in Millions
 12 Months Ended 120 Months Ended
Aug. 15, 2029
Dec. 31, 2019
Sep. 15, 2024
Dec. 31, 2018
Class of Stock [Line Items]        
Preferred Stock, Liquidation Preference, Value   $ 1,500    
Preferred Stock, Carrying Amount   $ 1,310   $ 820
Series A Preferred Stock [Member]        
Class of Stock [Line Items]        
Preferred Stock, Dividend Rate, Percentage   6.375%    
Preferred Stock, Liquidation Preference, Value   $ 500    
Preferred Stock, Carrying Amount   $ 387   387
Series B Preferred Stock [Member]        
Class of Stock [Line Items]        
Preferred Stock, Dividend Rate, Percentage [1]   6.375%    
Preferred Stock, Liquidation Preference, Value   $ 500    
Preferred Stock, Carrying Amount   $ 433   433
Series C Preferred Stock [Member]        
Class of Stock [Line Items]        
Preferred Stock, Dividend Rate, Percentage [2]   5.70%    
Preferred Stock, Liquidation Preference, Value   $ 500    
Preferred Stock, Carrying Amount   $ 490   $ 0
Scenario, Forecast [Member] | Series B Preferred Stock Dividend Scenario 1 [Member]        
Class of Stock [Line Items]        
Preferred Stock, Dividend Rate, Percentage 5.70%   6.375%  
Plus 3-Month LIBOR [Member] | Scenario, Forecast [Member] | Series B Preferred Stock Dividend Scenario 2 [Member]        
Class of Stock [Line Items]        
Preferred Stock, Dividend Rate, Basis Spread on Variable Rate, Percentage 3.148%   3.536%  
[1] Dividends, if declared, will be paid quarterly at an annual rate equal to (i) for each period beginning prior to September 15, 2024, 6.375%, and (ii) for each period beginning on or after September 15, 2024, three-month LIBOR plus 3.536%.
[2] Dividends, if declared, will be paid quarterly at an annual rate equal to (i) for each period beginning prior to August 15, 2029, 5.700%, and (ii) for each period beginning on or after August 15, 2029, three-month LIBOR plus 3.148%