Consolidated Statements of Earnings - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2015
Income Statement [Abstract]
Revenue	$ 129,976	$ 121,546	$ 102,531
Cost of products sold	123,432	115,003	96,819
Gross margin	6,544	6,543	5,712
Operating expenses:
Distribution, selling, general and administrative expenses	3,775	3,648	3,240
Restructuring and employee severance	56	25	44
Amortization and other acquisition-related costs	527	459	281
Impairments and (gain)/loss on disposal of assets, net	18	21	(19)
Litigation (recoveries)/charges, net	48	(69)	5
Operating earnings	2,120	2,459	2,161
Other (income)/expense, net	(5)	5	(7)
Interest expense, net	201	178	141
Loss on extinguishment of debt	0	0	60
Earnings from continuing operations before income taxes	1,924	2,276	1,967
Provision for income taxes	630	845	755
Earnings from continuing operations	1,294	1,431	1,212
Earnings from discontinued operations, net of tax	0	0	3
Net earnings	1,294	1,431	1,215
Less: Net earnings attributable to noncontrolling interests	(6)	(4)	0
Net Earnings Including Portion Attributable to Noncontrolling Interest Excluding Redeemable Noncontrolling Interest	$ 1,290	1,430
Net earnings attributable to Cardinal Health, Inc.		$ 1,427	$ 1,215
Basic earnings per common share attributable to Cardinal Health, Inc.:
Continuing operations (in usd per share)	$ 4.06	$ 4.36	$ 3.65
Discontinued operations (in usd per share)	0.00	0.00	0.01
Net basic earnings per common share attributable to Cardinal Health, Inc. (in usd per share)	4.06	4.36	3.66
Diluted earnings per common share attributable to Cardinal Health, Inc.:
Continuing operations (in usd per share)	4.03	4.32	3.61
Discontinued operations (in usd per share)	0.00	0.00	0.01
Net diluted earnings per common share attributable to Cardinal Health, Inc. (in usd per share)	$ 4.03	$ 4.32	$ 3.62
Weighted-average number of common shares outstanding:
Basic (in shares)	317	327	332
Diluted (in shares)	320	330	335