Supplemental Balance Sheet Information Related to Leases (Detail) - USD ($) $ in Millions	Dec. 31, 2020	Jun. 30, 2020
Operating Leases
Operating lease right-of-use assets	$ 10,298	$ 8,753
Total operating lease liabilities	10,741	9,287
Finance Leases
Accumulated depreciation	(47,715)	(43,197)
Property and equipment, net	51,737	44,151
Total finance lease liabilities	$ 11,518	$ 9,496
Weighted Average Remaining Lease Term
Operating leases	8 years	8 years
Finance leases	12 years	13 years
Weighted Average Discount Rate
Operating leases	2.30%	2.70%
Finance leases	3.60%	3.90%
Finance Lease
Finance Leases
Property and equipment, at cost	$ 12,694	$ 10,371
Accumulated depreciation	(1,840)	(1,385)
Property and equipment, net	10,854	8,986
Other Current Liabilities
Operating Leases
Total operating lease liabilities	1,866	1,616
Finance Leases
Total finance lease liabilities	699	540
Operating Lease Liabilities
Operating Leases
Total operating lease liabilities	8,875	7,671
Other Long-term Liabilities
Finance Leases
Total finance lease liabilities	$ 10,819	$ 8,956