Stockholders' Equity - Additional Information (Details) - USD ($) $ / shares in Units, $ in Millions		3 Months Ended		9 Months Ended
	Jul. 29, 2022	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021	Jul. 22, 2022	Dec. 31, 2021	Jan. 31, 2021
Stockholders Equity Note [Line Items]
Share repurchase program							$ 12,000	$ 8,000
Share repurchase programs authorized		$ 7,300		$ 7,300
Cash dividends declared and paid, at a quarterly amount per Class A share		$ 798	$ 698	$ 2,409	$ 2,102
Subsequent Event | Class A common stock
Stockholders Equity Note [Line Items]
Quarterly cash dividend (in dollars per share)						$ 0.375
Subsequent Event | Series A preferred stock
Stockholders Equity Note [Line Items]
Stock issued during the period, new issues (in shares)	176,853