Share Repurchases (Detail) - Share Repurchase Program 2021 - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Mar. 31, 2024	Dec. 31, 2023	Sep. 30, 2023	Mar. 31, 2023	Dec. 31, 2022	Sep. 30, 2022	Mar. 31, 2024	Mar. 31, 2023
Share Repurchases [Line Items]
Shares of common stock repurchased	7,000,000	7,000,000	11,000,000	18,000,000	20,000,000	17,000,000	25,000,000	55,000,000
Value of common stock repurchased	$ 2,800	$ 2,800	$ 3,560	$ 4,600	$ 4,600	$ 4,600	$ 9,160	$ 13,800

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.

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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