Financial Instruments (Schedule of Gain/(Loss) Included in AOCI for Derivative Instruments Designated as Cash Flow Hedges) (Details) - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2023
Cash Flow Hedging | Foreign Currency Contracts
Derivative [Line Items]
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification and Tax	$ 11	$ (7)	$ (2)