Shareholders' Equity (Deficit) - Narrative (Details) - USD ($)	1 Months Ended				3 Months Ended		9 Months Ended		150 Months Ended
	Feb. 28, 2022	Nov. 30, 2020	Jun. 30, 2017	Nov. 30, 2014	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Apr. 30, 2012
Equity [Abstract]
Share repurchase authorization amount					$ 27,500,000,000		$ 27,500,000,000		$ 27,500,000,000	$ 5,000,000,000.0
Share repurchase authorization amount, increase during period	$ 7,500,000,000	$ 5,000,000,000.0	$ 5,000,000,000.0	$ 5,000,000,000.0
Share repurchase, remaining authorized repurchase amount					$ 2,500,000,000		$ 2,500,000,000		$ 2,500,000,000
Shares purchased (in shares)					900,000	2,600,000	2,500,000	6,100,000	171,600,000
Total cost of shares purchased					$ 304,000,000	$ 850,000,000	$ 804,000,000	$ 1,950,000,000	$ 25,000,000,000
Antidilutive securities excluded from computation of earnings per share (in shares)					0	0	100,000	0