Quarterly report pursuant to Section 13 or 15(d)

Shareholders' Equity - Preferred Stock (Details)

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Shareholders' Equity - Preferred Stock (Details) - USD ($)
$ / shares in Units, $ in Millions
3 Months Ended 6 Months Ended
Apr. 22, 2022
Jun. 30, 2022
Mar. 31, 2022
Jun. 30, 2021
Jun. 30, 2022
Jun. 30, 2021
Preferred Stock Exchanges [Line Items]            
Preferred stock dividends   $ 315 $ 467 $ 260 $ 782 $ 750
Issuance of preferred stock   $ 1,997     $ 4,426 $ 902
Series TT Preferred Stock            
Preferred Stock Exchanges [Line Items]            
Preferred stock issued (in shares) 80,000          
Per annum dividend rate 6.125%          
Issuance of preferred stock $ 2,000          
Liquidation preference per share (in dollars per share) $ 25,000