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CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY (UNAUDITED) (Parenthetical) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Mar. 31, 2023
Mar. 31, 2022
Mar. 31, 2023
Mar. 31, 2022
Sep. 30, 2022
Dividends declared, quarterly, per share (in dollars per share) $ 0.45 $ 0.375 $ 0.45 $ 0.375  
Dividends paid, quarterly, per share (in dollars per share) $ 0.45 $ 0.375 $ 0.45 $ 0.375  
Preferred stock $ 1,885   $ 1,885   $ 2,324
Series A preferred stock          
Preferred stock $ 627   $ 627   $ 1,000