Leases - Schedule of Additional Information Related To Leases (Detail) $ in Millions	12 Months Ended
	Jun. 30, 2020 USD ($)
Leases [Abstract]
Operating Lease, Weighted-average remaining lease term	12 years 2 months 12 days
Operating Leases, Weighted-average incremental borrowing rate	3.49%
Finance Lease, Weighted-average remaining lease term	4 years 8 months 12 days
Finance Lease, Weighted-average incremental borrowing rate	3.64%
Cash paid - Operating lease liabilities	$ 224
Cash paid - Finance lease liabilities - principal	7
Cash paid - Finance lease liabilities - interest	1
Operating lease right-of-use asset obtained in exchange for operating lease liabilities	$ 225