Income Taxes (Schedule of Deferred Tax Assets and Liabilities) (Details) - USD ($) $ in Millions	Jun. 30, 2025	Jun. 30, 2024
Deferred income tax assets:
Receivable basis difference	$ 26	$ 81
Accrued liabilities	651	749
Share-based compensation	23	28
Loss and tax credit carryforwards	386	512
Deferred tax assets related to uncertain tax positions	47	45
Other	97	76
Total deferred income tax assets	1,230	1,491
Valuation allowance for deferred income tax assets	(254)	(300)
Net deferred income tax assets	976	1,191
Deferred income tax liabilities:
Inventory basis differences	(1,103)	(1,122)
Property-related	(358)	(350)
Other	(834)	(710)
Deferred Tax Liabilities, Deferred Expense, Reserves and Accruals	(981)	(981)
Total deferred income tax liabilities	(3,276)	(3,163)
Net deferred income tax liability	$ (2,300)	$ (1,972)