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Share Repurchases (Detail) - USD ($) $ in Millions	3 Months Ended												12 Months Ended
Share Repurchases (Detail) - USD ($) $ in Millions	Jun. 30, 2023	Mar. 31, 2023	Dec. 31, 2022	Sep. 30, 2022	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, 2023	Jun. 30, 2022	Jun. 30, 2021
Share Repurchases [Line Items]
Shares of common stock repurchased													69,000,000	95,000,000	101,000,000
Share Repurchase Program 2019
Share Repurchases [Line Items]
Shares of common stock repurchased								21,000,000	24,000,000	25,000,000	27,000,000	25,000,000			101,000,000
Value of common stock repurchased								$ 6,200	$ 6,200	$ 5,750	$ 5,750	$ 5,270			$ 22,970
Share Repurchase Program 2019 and 2021
Share Repurchases [Line Items]
Shares of common stock repurchased							20,000,000							95,000,000
Value of common stock repurchased							$ 6,233							$ 28,033
Share Repurchase Program 2021
Share Repurchases [Line Items]
Shares of common stock repurchased	14,000,000	18,000,000	20,000,000	17,000,000	28,000,000	26,000,000							69,000,000
Value of common stock repurchased	$ 4,600	$ 4,600	$ 4,600	$ 4,600	$ 7,800	$ 7,800							$ 18,400

Number of shares that have been repurchased during the period and have not been retired and are not held in treasury. Some state laws may govern the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock.

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- Definition

Equity impact of the value of stock that has been repurchased during the period and has not been retired and is not held in treasury. Some state laws may mandate the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock.

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