Shareholders' Equity - Additional Information (Details) - USD ($) shares in Millions	1 Months Ended				3 Months Ended		120 Months Ended
	Feb. 18, 2022	Nov. 30, 2020	Jun. 30, 2017	Nov. 30, 2014	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2022	Apr. 30, 2012
Equity [Abstract]
Share repurchase authorization amount					$ 27,500,000,000		$ 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					$ 8,400,000,000		$ 8,400,000,000
Shares purchased (in shares)					2.8	0.2	152.4
Total cost of shares purchased					$ 828,000,000	$ 50,000,000	$ 19,100,000,000
Antidilutive securities excluded from computation of earnings per share (in shares)					0.9	0.1