Condensed Consolidated Statements of Earnings - USD ($) shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Mar. 31, 2026	Mar. 31, 2025	Mar. 31, 2026	Mar. 31, 2025
Income Statement [Abstract]
Revenue	$ 60,940	$ 54,878	$ 190,576	$ 162,419
Cost of products sold	58,442	52,755	183,362	156,453
Gross margin	2,498	2,123	7,214	5,966
Operating expenses:
Distribution, selling, general and administrative expenses	1,542	1,315	4,507	3,898
Restructuring and employee severance	25	28	66	61
Amortization and other acquisition-related costs	114	152	348	331
Acquisition-related cash and share-based compensation costs	112	20	243	20
Impairments and (gain)/loss on disposal of assets, net	185	(17)	173	(15)
Litigation (recoveries)/charges, net	11	(105)	(7)	(176)
Operating earnings	509	730	1,884	1,847
Other (income)/expense, net	16	(9)	(5)	(11)
Interest Expense, Nonoperating	101	74	269	141
Earnings/(loss) before income taxes	392	665	1,620	1,717
Provision for income taxes	12	157	315	391
Net earnings/(loss)	380	508	1,305	1,326
Less: Net earnings attributable to noncontrolling interests	19	(2)	11	(4)
Net earnings attributable to Cardinal Health, Inc.	$ 399	$ 506	$ 1,316	$ 1,322
Earnings per common share attributable to Cardinal Health, Inc.:
Basic (in shares)	$ 1.69	$ 2.11	$ 5.56	$ 5.47
Diluted (in shares)	$ 1.69	$ 2.10	$ 5.54	$ 5.44
Weighted-average number of common shares outstanding:
Basic (in shares)	235	240	237	242
Diluted (in shares)	236	241	238	243
Cash dividends declared per common share	$ 0.5107	$ 0.5056	$ 1.5321	$ 1.5168
Acquisition-related cash and share-based compensation costs	$ 112	$ 20	$ 243	$ 20