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