Shareholders' Equity (Deficit) - Narrative (Details) - USD ($) shares in Millions	1 Months Ended				3 Months Ended		138 Months Ended
	Feb. 28, 2022	Nov. 30, 2020	Jun. 30, 2017	Nov. 30, 2014	Mar. 31, 2024	Mar. 31, 2023	Sep. 30, 2023	Apr. 30, 2012
Equity [Abstract]
Share repurchase authorization amount					$ 27,500,000,000			$ 5,000,000,000
Share repurchase authorization amount, increase during period	$ 7,500,000,000	$ 5,000,000,000	$ 5,000,000,000	$ 5,000,000,000
Share repurchase, remaining authorized repurchase amount					$ 3,100,000,000
Shares purchased (in shares)					0.8	1.8	169.9
Total cost of shares purchased					$ 250,000,000	$ 550,000,000	$ 24,400,000,000
Antidilutive securities excluded from computation of earnings per share (in shares)					0.1	0.0