Supplemental Cash Flow Information Related to Leases (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2024	Mar. 31, 2023
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases	$ 836	$ 690	$ 2,433	$ 1,989
Operating cash flows from finance leases	190	132	507	364
Financing cash flows from finance leases	323	272	896	790
Right-of-use assets obtained in exchange for lease obligations:
Operating leases	1,831	663	4,482	2,377
Finance leases	$ 3,421	$ 1,044	$ 6,921	$ 2,253