Income Taxes (Schedule of Unrecognized Tax Benefits Roll Forward) (Details) - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2023
Income Tax Disclosure [Abstract]
Current Federal Tax Expense (Benefit)	$ 135	$ 305	$ 219
Current State and Local Tax Expense (Benefit)	72	68	69
Current Foreign Tax Expense (Benefit)	82	79	84
Current Income Tax Expense (Benefit)	289	452	372
Deferred Federal Income Tax Expense (Benefit)	205	(89)	(23)
Deferred State and Local Income Tax Expense (Benefit)	39	12	11
Deferred Foreign Income Tax Expense (Benefit)	(1)	(27)	(28)
Deferred Income Tax Expense (Benefit)	243	(104)	(40)
Income Tax Expense (Benefit)	532	348	332
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Balance at beginning of fiscal year	981	1,015	948
Additions for tax positions of the current year	8	30	25
Additions for tax positions of prior years	15	28	133
Reductions for tax positions of prior years	(101)	(87)	(16)
Settlements with tax authorities	(22)	(3)	(73)
Expiration of the statute of limitations	(2)	(2)	(2)
Balance at end of fiscal year	$ 879	$ 981	$ 1,015