Leases - Schedule of total lease cost (Detail) - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Lessee, Lease, Description [Line Items]
Total lease costs	$ 246	$ 260
Selling, general and administrative
Lessee, Lease, Description [Line Items]
Operating lease costs	135	139
Variable lease costs	28	41
Operating expenses
Lessee, Lease, Description [Line Items]
Operating lease costs	37	64
Short term lease costs	15	9
Depreciation and amortization
Lessee, Lease, Description [Line Items]
Finance lease costs	27	6
Interest expense, net
Lessee, Lease, Description [Line Items]
Finance lease costs	$ 4	$ 1