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Income Taxes - Schedule of Income Taxes Paid, Net (Details) - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2024
Income Tax Paid, by Individual Jurisdiction [Line Items]
Federal	$ 469
State and local	67
Foreign:
Total foreign	528
Net income tax, related interest, penalties, and purchased credits	1,064	$ 927	$ 852
China
Foreign:
Total foreign	86
Switzerland
Foreign:
Total foreign	70
United Kingdom
Foreign:
Total foreign	101
Other
Foreign:
Total foreign	$ 271