Leases - Summary of Lease Costs and Supplemental Cash Flows Information (Details) - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2020
Lease costs
Total lease costs	$ 128	$ 126	$ 126
Supplemental cash flows information
Operating cash flows from operating leases	116	134	166
ROU assets obtained in exchange for operating lease liabilities	137	49	87
Sublease income	15	30	50
Total lease costs	$ 128	126	126
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Supplemental cash flows information
Sublease income		$ 15	$ 40