Additional Financial Information - Schedule of Supplemental Information (Details) - USD ($) $ in Millions	12 Months Ended
Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2024
Supplemental cash flow information
Cash paid for interest	$ (440)	$ (402)	$ (398)
Cash paid for income taxes
Federal	(245)	(394)	(207)
State	(77)	(113)	(18)
Foreign	(13)	(8)	(7)
Total cash paid for income taxes	$ (335)	$ (515)	$ (232)

Amount, after income tax refund received, of cash paid to federal (national) tax jurisdiction for tax on income.

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Amount, after income tax refund received, of cash paid to foreign tax jurisdiction for tax on income.

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Amount, after income tax refund received, of cash paid to state and local tax jurisdictions for tax on income.

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Amount, after refund, of cash paid to foreign, federal, state, and local jurisdictions as income tax.

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Amount of cash paid for interest, excluding capitalized interest, classified as operating activity. Includes, but is not limited to, payment to settle zero-coupon bond for accreted interest of debt discount and debt instrument with insignificant coupon interest rate in relation to effective interest rate of borrowing attributable to accreted interest of debt discount.

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