Goodwill and Other Intangible Assets (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended			9 Months Ended
	Mar. 31, 2025	Mar. 31, 2024	Sep. 30, 2023	Mar. 31, 2025	Mar. 31, 2024	Jun. 30, 2024
Goodwill and Intangible Assets Disclosure [Abstract]
Amortization of intangible assets	$ 77	$ 64		$ 214	$ 191
Estimated annual amortization of intangible assets - Remainder of Fiscal Year	82			82
Estimated annual amortization of intangible assets - Year One	308			308
Estimated annual amortization of intangible assets - Year Two	285			285
Estimated annual amortization of intangible assets - Year Three	256			256
Estimated annual amortization of intangible assets - Year Four	249			249
Goodwill [Line Items]
Goodwill	8,906			8,906		$ 4,725
Global Medical Products and Distribution
Goodwill [Line Items]
Goodwill	$ 0			$ 0		$ 0
Goodwill impairment		$ 90	$ 585		$ 675