Condensed Consolidated Statements of Earnings - USD ($) shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Mar. 31, 2025	Mar. 31, 2024	Mar. 31, 2025	Mar. 31, 2024
Income Statement [Abstract]
Revenue	$ 54,878	$ 54,868	$ 162,419	$ 166,960
Cost of products sold	52,755	52,933	156,453	161,428
Gross margin	2,123	1,935	5,966	5,532
Operating expenses:
Distribution, selling, general and administrative expenses	1,315	1,269	3,898	3,723
Restructuring and employee severance	28	53	61	106
Amortization and other acquisition-related costs	152	80	331	207
Acquisition-related cash and share-based compensation costs	20		20
Impairments and (gain)/loss on disposal of assets, net	(17)	84	(15)	626
Litigation (recoveries)/charges, net	(105)	80	(176)	28
Operating earnings	730	369	1,847	842
Other (income)/expense, net	(9)	(1)	(11)	(10)
Interest expense, net	74	28	141	42
Earnings/(loss) before income taxes	665	342	1,717	810
Provision for income taxes	157	80	391	190
Net earnings/(loss)	508	262	1,326	620
Less: Net earnings attributable to noncontrolling interests	(2)	(1)	(4)	(3)
Net earnings attributable to Cardinal Health, Inc.	$ 506	$ 261	$ 1,322	$ 617
Earnings per common share attributable to Cardinal Health, Inc.:
Basic (in shares)	$ 2.11	$ 1.07	$ 5.47	$ 2.51
Diluted (in shares)	$ 2.10	$ 1.07	$ 5.44	$ 2.50
Weighted-average number of common shares outstanding:
Basic (in shares)	240	243	242	245
Diluted (in shares)	241	245	243	247
Cash dividends declared per common share	$ 0.5056	$ 0.5006	$ 1.5168	$ 1.5018
Acquisition-related cash and share-based compensation costs	$ 20		$ 20