v3.22.0.1
Stockholders' Equity and Accumulated Other Comprehensive Income (Loss) (Preferred Stock Issuances) (Details) - USD ($)
 12 Months Ended 120 Months Ended
Aug. 15, 2029
Sep. 15, 2025
Dec. 31, 2021
Sep. 15, 2024
Dec. 31, 2020
Class of Stock [Line Items]          
Preferred Stock, Liquidation Preference, Value     $ 1,750,000,000    
Preferred Stock, Carrying Amount     $ 1,659,000,000   $ 1,656,000,000
Series A Preferred Stock [Member]          
Class of Stock [Line Items]          
Preferred Stock, Dividend Rate, Percentage [1]     6.375%    
Preferred Stock, Liquidation Preference, Value [2]     $ 0    
Preferred stock, liquidation preference per share     $ 1,000,000,000    
Preferred Stock, Carrying Amount     $ 0   387,000,000
Series B Preferred Stock [Member]          
Class of Stock [Line Items]          
Preferred Stock, Dividend Rate, Percentage [1],[3]     6.375%    
Preferred Stock, Liquidation Preference, Value     $ 500,000,000    
Preferred stock, liquidation preference per share     $ 1,000,000,000    
Preferred Stock, Carrying Amount     $ 433,000,000   433,000,000
Series C Preferred Stock [Member]          
Class of Stock [Line Items]          
Preferred Stock, Dividend Rate, Percentage [1],[4]     5.70%    
Preferred Stock, Liquidation Preference, Value     $ 500,000,000    
Preferred stock, liquidation preference per share     $ 1,000,000,000    
Preferred Stock, Carrying Amount     $ 490,000,000   490,000,000
Series D Preferred Stock          
Class of Stock [Line Items]          
Preferred Stock, Dividend Rate, Percentage [1],[5]     5.75%    
Preferred Stock, Liquidation Preference, Value     $ 350,000,000    
Preferred stock, liquidation preference per share     $ 100,000,000,000    
Preferred Stock, Carrying Amount     $ 346,000,000   346,000,000
Series E Preferred Stock          
Class of Stock [Line Items]          
Preferred Stock, Dividend Rate, Percentage     4.45%    
Preferred Stock, Liquidation Preference, Value     $ 400,000,000    
Preferred stock, liquidation preference per share     $ 1,000,000,000    
Preferred Stock, Carrying Amount     $ 390,000,000   $ 0
Scenario, Forecast [Member] | Series B Preferred Stock Dividend Scenario 1 [Member]          
Class of Stock [Line Items]          
Preferred Stock, Dividend Rate, Percentage       6.375%  
Scenario, Forecast [Member] | Series C Preferred Stock Dividend Scenario 1 Member [Member]          
Class of Stock [Line Items]          
Preferred Stock, Dividend Rate, Percentage 5.70%        
Scenario, Forecast [Member] | Series C Preferred Stock Dividend Scenario 2 Member [Member]          
Class of Stock [Line Items]          
Preferred Stock, Dividend Rate, Basis Spread on Variable Rate, Percentage 3.148%        
Scenario, Forecast [Member] | Series D Preferred Stock Dividend Scenario 1 Member [Member]          
Class of Stock [Line Items]          
Preferred Stock, Dividend Rate, Percentage   5.75%      
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       3.536%  
Plus 5-year Treasury rate [Member] | Scenario, Forecast [Member] | Series D Preferred Stock Dividend Scenario 2 Member [Member]          
Class of Stock [Line Items]          
Preferred Stock, Dividend Rate, Basis Spread on Variable Rate, Percentage   5.426%      
Depositary Shares [Member] | Series A Preferred Stock [Member]          
Class of Stock [Line Items]          
Preferred stock, liquidation preference per share     $ 25,000,000    
Depositary Shares [Member] | Series B Preferred Stock [Member]          
Class of Stock [Line Items]          
Preferred stock, liquidation preference per share     25,000,000    
Depositary Shares [Member] | Series C Preferred Stock [Member]          
Class of Stock [Line Items]          
Preferred stock, liquidation preference per share     25,000,000    
Depositary Shares [Member] | Series D Preferred Stock          
Class of Stock [Line Items]          
Preferred stock, liquidation preference per share     1,000,000,000    
Depositary Shares [Member] | Series E Preferred Stock          
Class of Stock [Line Items]          
Preferred stock, liquidation preference per share     $ 25,000,000    
[1] Dividends on all series of preferred stock, if declared, accrue and are payable quarterly in arrears.
[2] The shares were fully redeemed on June 15, 2021.
[3] 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%.
[4] 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%
[5] Dividends, if declared, will be paid quarterly at an annual rate equal to (i) for each period beginning prior to September 15, 2025, 5.750%, and (ii) for each period beginning on or after September 15, 2025, the five-year treasury rate as of the most recent reset dividend determination date plus 5.426%.