Income Taxes (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended			6 Months Ended	9 Months Ended
	Mar. 31, 2025	Mar. 31, 2024	Sep. 30, 2023	Jun. 30, 2024	Mar. 31, 2025	Mar. 31, 2024
Income Taxes
Effective Income Tax Rate Reconciliation, Percent	23.60%	23.30%			22.80%	23.40%
Income Tax Expense (Benefit)	$ 157	$ 80			$ 391	$ 190
Unrecognized tax benefits	890			$ 981	890
Unrecognized tax benefits that would impact effective tax rate	865			882	865
Unrecognized tax benefits, interest and penalties accrued	$ 64			65	$ 64
Global Medical Products and Distribution
Income Taxes
Goodwill impairment		$ 90	$ 585			675
Global Medical Products and Distribution
Income Taxes
Income Tax Expense (Benefit)				$ 36		$ (56)