Share Repurchases (Detail) - USD ($) shares in Millions, $ in Millions	3 Months Ended												12 Months Ended
	Jun. 30, 2022	Mar. 31, 2022	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2020
Share Repurchases [Line Items]
Shares of common stock repurchased													95	101	126
Share Repurchase Program 2019
Share Repurchases [Line Items]
Shares of common stock repurchased				21	24	25	27	25	28					101
Value of common stock repurchased				$ 6,200	$ 6,200	$ 5,750	$ 5,750	$ 5,270	$ 5,088					$ 22,970
Share Repurchase Program 2019 and 2021
Share Repurchases [Line Items]
Shares of common stock repurchased			20
Value of common stock repurchased			$ 6,233
Share Repurchase Program 2021
Share Repurchases [Line Items]
Shares of common stock repurchased	28	26											95
Value of common stock repurchased	$ 7,800	$ 7,800											$ 28,033
Share Repurchase Program 2016
Share Repurchases [Line Items]
Shares of common stock repurchased											32	29			126
Value of common stock repurchased											$ 4,600	$ 4,000			$ 19,688
Share Repurchase Programs 2016 and 2019
Share Repurchases [Line Items]
Shares of common stock repurchased										37
Value of common stock repurchased										$ 6,000