Other Information Related to Leases (Detail) - USD ($) $ in Millions	3 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases	$ 369	$ 267
Operating cash flows from finance leases	30	12
Financing cash flows from finance leases	25	6
Right-of-use assets obtained in exchange for lease obligations:
Operating leases	391	55
Finance leases	$ 728	$ 267
Weighted Average Remaining Lease Term
Operating leases	7 years	5 years
Finance leases	14 years	12 years
Weighted Average Discount Rate
Operating leases	2.50%	2.30%
Finance leases	4.70%	5.10%