Supplemental Cash Flow Information Related to Leases (Detail) - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2019
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases	$ 2,052	$ 1,829	$ 1,670
Operating cash flows from finance leases	386	336	247
Financing cash flows from finance leases	648	409	221
Right-of-use assets obtained in exchange for lease obligations:
Operating leases	4,380	3,677	2,303
Finance leases	$ 3,290	$ 3,467	$ 2,532