Components of Lease Expense (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2024	Dec. 31, 2023
Leases [Abstract]
Operating lease cost	$ 1,293	$ 817	$ 2,453	$ 1,591
Finance lease cost:
Amortization of right-of-use assets	830	408	1,524	788
Interest on lease liabilities	337	168	611	317
Total finance lease cost	$ 1,167	$ 576	$ 2,135	$ 1,105