Financial Instruments - Schedule of Gains (Losses) on Derivative and Non-Derivative Financial Instruments Recorded in Accumulated Other Comprehensive (Loss) (Details) - Designated as Hedging Instrument - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Mar. 31, 2026	Mar. 31, 2025	Mar. 31, 2026	Mar. 31, 2025
Cross-currency swap contracts
Derivative Instruments, Gain (Loss) [Line Items]
Derivative and non-derivative instruments gain (loss) recognized in accumulated other comprehensive income (loss)	$ 10	$ 4	$ 15	$ 2
Foreign currency denominated debt
Derivative Instruments, Gain (Loss) [Line Items]
Derivative and non-derivative instruments gain (loss) recognized in accumulated other comprehensive income (loss)	$ 12	$ (24)	$ 12	$ (5)