Condensed Consolidated Statements of Earnings - USD ($) shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Mar. 31, 2019	Mar. 31, 2018
Income Statement [Abstract]
Revenue	$ 35,228	$ 33,633	$ 108,181	$ 101,460
Cost of products sold	33,464	31,720	103,021	96,014
Gross margin	1,764	1,913	5,160	5,446
Operating expenses:
Distribution, selling, general and administrative expenses	1,097	1,132	3,315	3,325
Restructuring and employee severance	53	2	97	155
Amortization and other acquisition-related costs	154	175	468	543
Impairments and (gain)/loss on disposal of assets, net	11	(6)	(492)	62
Litigation (recoveries)/charges, net	17	64	20	155
Operating earnings	432	546	1,752	1,206
Other (income)/expense, net	(13)	(2)	13	(6)
Interest expense, net	75	84	227	251
Loss on Extinguishment of Debt	0	0	0	2
Earnings before income taxes	370	464	1,512	959
Provision for/(benefit from) income taxes	74	209	342	(466)
Net earnings	296	255	1,170	1,425
Net earnings attributable to noncontrolling interests	0	0	(1)	(3)
Net earnings attributable to Cardinal Health, Inc.	$ 296	$ 255	$ 1,169	$ 1,422
Earnings per common share attributable to Cardinal Health, Inc.:
Basic (in shares)	$ 0.99	$ 0.81	$ 3.89	$ 4.52
Income (Loss) from Continuing Operations, Per Diluted Share	$ 0.99	$ 0.81	$ 3.88	$ 4.50
Weighted-average number of common shares outstanding:
Basic (in shares)	298	313	301	314
Diluted (in shares)	299	315	302	316
Cash dividends declared per common share	$ 0.4763	$ 0.4624	$ 1.4289	$ 1.3872