Condensed Consolidated Statements of Earnings - USD ($) shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2020	Dec. 31, 2019
Income Statement [Abstract]
Revenue	$ 41,541	$ 39,735	$ 80,606	$ 77,076
Cost of products sold	39,765	38,021	77,115	73,683
Gross margin	1,776	1,714	3,491	3,393
Operating expenses:
Distribution, selling, general and administrative expenses	1,147	1,163	2,284	2,270
Restructuring and employee severance	20	56	57	86
Amortization and other acquisition-related costs	116	133	234	265
Impairments and (gain)/loss on disposal of assets, net	0	7	9	8
Litigation (recoveries)/charges, net	32	21	1,070	5,694
Operating earnings/(loss)	461	334	(163)	(4,930)
Other (income)/expense, net	(12)	(12)	(19)	2
Interest expense, net	46	63	91	129
Loss on Extinguishment of Debt	0	4	1	4
Earnings/(loss) before income taxes	427	279	(236)	(5,065)
Provision for/(benefit from) income taxes	(203)	59	(613)	(364)
Net earnings/(loss)	630	220	377	(4,701)
Less: Net earnings attributable to noncontrolling interests	(1)	0	(1)	(1)
Net earnings/(loss) attributable to Cardinal Health, Inc.	$ 629	$ 220	$ 376	$ (4,702)
Earnings/(loss) per common share attributable to Cardinal Health, Inc.:
Basic (in shares)	$ 2.14	$ 0.75	$ 1.28	$ (15.99)
Income (Loss) from Continuing Operations, Per Diluted Share	$ 2.13	$ 0.75	$ 1.27	$ (15.99)
Weighted-average number of common shares outstanding:
Basic (in shares)	294	292	293	294
Diluted (in shares)	295	294	295	294
Cash dividends declared per common share	$ 0.4859	$ 0.4811	$ 0.9718	$ 0.9622