Leases - Schedule of total lease cost (Details) - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2022
Lessee, Lease, Description [Line Items]
Total lease costs	$ 217	$ 220	$ 227
Selling, general and administrative
Lessee, Lease, Description [Line Items]
Operating lease costs	113	121	125
Variable lease costs	27	24	24
Operating expenses
Lessee, Lease, Description [Line Items]
Operating lease costs	31	32	36
Short term lease costs	21	16	12
Depreciation and amortization
Lessee, Lease, Description [Line Items]
Finance lease costs	24	25	27
Interest expense, net
Lessee, Lease, Description [Line Items]
Finance lease costs	$ 1	$ 2	$ 3