Consolidated Statements of Earnings - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2014
Income Statement [Abstract]
Revenue	$ 121,546	$ 102,531	$ 91,084
Cost of products sold	115,003	96,819	85,923
Gross margin	6,543	5,712	5,161
Operating expenses:
Distribution, selling, general, and administrative expenses	3,648	3,240	3,028
Restructuring and employee severance	25	44	31
Amortization and other acquisition-related costs	459	281	223
Impairments and (gain)/loss on disposal of assets, net	21	(19)	15
Litigation (recoveries)/charges, net	(69)	5	(21)
Operating earnings	2,459	2,161	1,885
Other (income)/expense, net	5	(7)	(46)
Interest expense, net	178	141	133
Loss on extinguishment of debt	0	60	0
Earnings from continuing operations before income taxes	2,276	1,967	1,798
Provision for income taxes	845	755	635
Earnings from continuing operations	1,431	1,212	1,163
Earnings from discontinued operations, net of tax	0	3	3
Net earnings	1,431	1,215	1,166
Less: Net earnings attributable to noncontrolling interests	(4)	0	0
Net earnings attributable to Cardinal Health, Inc.	$ 1,427	$ 1,215	$ 1,166
Basic earnings per common share attributable to Cardinal Health, Inc.:
Continuing operations (in usd per share)	$ 4.36	$ 3.65	$ 3.41
Discontinued operations (in usd per share)	0.00	0.01	0.01
Net basic earnings per common share attributable to Cardinal Health, Inc. (in usd per share)	4.36	3.66	3.42
Diluted earnings per common share attributable to Cardinal Health, Inc.:
Continuing operations (in usd per share)	4.32	3.61	3.37
Discontinued operations (in usd per share)	0.00	0.01	0.01
Net diluted earnings per common share attributable to Cardinal Health, Inc. (in usd per share)	$ 4.32	$ 3.62	$ 3.38
Weighted-average number of common shares outstanding:
Basic (in shares)	327	332	341
Diluted (in shares)	330	335	345