Maturities of Lease Liabilities (Detail) - USD ($) $ in Millions	Mar. 31, 2022	Jun. 30, 2021
Leases [Abstract]
Operating Leases, Year Ending June 30, 2022 (excluding the nine months ended March 31, 2022)	$ 601
Operating Leases, Year Ending June 30, 2023	2,335
Operating Leases, Year Ending June 30, 2024	2,160
Operating Leases, Year Ending June 30, 2025	1,885
Operating Leases, Year Ending June 30, 2026	1,531
Operating Leases, Thereafter	6,074
Operating Leases, Total lease payments	14,586
Operating Leases, Less imputed interest	(1,070)
Operating Leases	13,516	$ 11,591
Finance Leases, Year Ending June 30, 2022 (excluding the nine months ended March 31, 2022)	346
Finance Leases, Year Ending June 30, 2023	1,404
Finance Leases, Year Ending June 30, 2024	1,420
Finance Leases, Year Ending June 30, 2025	1,749
Finance Leases, Year Ending June 30, 2026	1,435
Finance Leases, Thereafter	10,928
Finance Leases, Total lease payments	17,282
Finance Leases, Less imputed interest	(2,743)
Finance Leases	$ 14,539	$ 12,541