Condensed Consolidated Statements of Earnings - USD ($) shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2024	Dec. 31, 2023
Income Statement [Abstract]
Revenue	$ 55,264	$ 57,442	$ 107,541	$ 112,092
Cost of products sold	53,323	55,588	103,698	108,495
Gross margin	1,941	1,854	3,843	3,597
Operating expenses:
Distribution, selling, general and administrative expenses	1,306	1,268	2,583	2,454
Restructuring and employee severance	9	28	33	53
Amortization and other acquisition-related costs	105	63	179	127
Impairments and (gain)/loss on disposal of assets, net	3	1	2	542
Litigation (recoveries)/charges, net	(31)	(11)	(71)	(52)
Operating earnings	549	505	1,117	473
Other (income)/expense, net	3	(10)	(2)	(9)
Interest expense, net	35	3	67	14
Earnings/(loss) before income taxes	511	512	1,052	468
Provision for income taxes	110	143	234	110
Net earnings/(loss)	401	369	818	358
Less: Net earnings attributable to noncontrolling interests	(1)	(1)	(2)	(2)
Net earnings attributable to Cardinal Health, Inc.	$ 400	$ 368	$ 816	$ 356
Earnings per common share attributable to Cardinal Health, Inc.:
Basic (in shares)	$ 1.65	$ 1.50	$ 3.37	$ 1.44
Diluted (in shares)	$ 1.65	$ 1.50	$ 3.35	$ 1.43
Weighted-average number of common shares outstanding:
Basic (in shares)	242	245	242	247
Diluted (in shares)	243	246	243	248
Cash dividends declared per common share	$ 0.5056	$ 0.5006	$ 1.0112	$ 1.0012