Leases - Schedule of Supplemental Cash Flow Information (Details) - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2023
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash outflows - payments on operating leases	$ 64	$ 65	$ 58
Operating cash outflows - interest payments on finance leases	5	5	4
Financing cash outflows - payments on finance lease obligations	5	5	5
Right-of-use assets obtained in exchange for operating lease obligations	18	42	45
Right-of-use assets obtained in exchange for finance lease obligations	$ 2	$ 4	$ 1