Components of Lease Expense (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2023	Mar. 31, 2022
Leases [Abstract]
Operating lease cost	$ 766	$ 744	$ 2,112	$ 1,801
Finance lease cost:
Amortization of right-of-use assets	348	289	994	779
Interest on lease liabilities	132	109	364	320
Total finance lease cost	$ 480	$ 398	$ 1,358	$ 1,099