Condensed Consolidated Statements of Earnings - USD ($) shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2020	Mar. 31, 2019
Income Statement [Abstract]
Revenue	$ 39,157	$ 35,228	$ 116,233	$ 108,181
Cost of products sold	37,272	33,464	110,955	103,021
Gross margin	1,885	1,764	5,278	5,160
Operating expenses:
Distribution, selling, general and administrative expenses	1,165	1,097	3,435	3,315
Restructuring and employee severance	(6)	53	80	97
Amortization and other acquisition-related costs	130	154	395	468
Impairments and (gain)/loss on disposal of assets, net	(1)	11	7	(492)
Litigation (recoveries)/charges, net	35	17	5,729	20
Operating earnings/(loss)	562	432	(4,368)	1,752
Other (income)/expense, net	19	(13)	21	13
Interest expense, net	60	75	189	227
Loss on Extinguishment of Debt	5	0	9	0
Earnings/(loss) before income taxes	478	370	(4,587)	1,512
Provision for/(benefit from) income taxes	127	74	(237)	342
Net earnings/(loss)	351	296	(4,350)	1,170
Less: Net earnings attributable to noncontrolling interests	(1)	0	(2)	(1)
Net earnings/(loss) attributable to Cardinal Health, Inc.	$ 350	$ 296	$ (4,352)	$ 1,169
Earnings/(loss) per common share attributable to Cardinal Health, Inc.:
Basic (in shares)	$ 1.20	$ 0.99	$ (14.84)	$ 3.89
Income (Loss) from Continuing Operations, Per Diluted Share	$ 1.19	$ 0.99	$ (14.84)	$ 3.88
Weighted-average number of common shares outstanding:
Basic (in shares)	292	298	293	301
Diluted (in shares)	294	299	293	302
Cash dividends declared per common share	$ 0.4811	$ 0.4763	$ 1.4433	$ 1.4289