Shares of Common Stock Outstanding (Detail) - shares shares in Millions	12 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2023
Equity [Abstract]
Balance, beginning of year	7,434	7,432	7,464
Issued	31	34	37
Repurchased	(31)	(32)	(69)
Balance, end of year	7,434	7,434	7,432

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.