Condensed Consolidated Statements of Earnings - USD ($) shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Mar. 31, 2016	Mar. 31, 2015
Income Statement [Abstract]
Revenue	$ 30,662	$ 25,375	$ 90,162	$ 74,983
Cost of products sold	28,973	23,916	85,285	70,729
Gross margin	1,689	1,459	4,877	4,254
Operating expenses:
Distribution, selling, general, and administrative expenses	914	803	2,678	2,393
Restructuring and employee severance	6	7	19	33
Amortization and other acquisition-related costs	108	77	327	190
Impairments and (gain)/loss on disposal of assets, net	0	1	(17)	19
Litigation (recoveries)/charges, net	5	(18)	(3)	54
Operating earnings	656	591	1,839	1,603
Other (income)/expense, net	0	(2)	5	(6)
Interest expense, net	44	35	134	105
Loss on extinguishment of debt	0	0	0	60
Earnings before income taxes	612	558	1,700	1,444
Provision for income taxes	226	193	604	524
Net Earnings	386	365	1,096	920
Net earnings attributable to non-controlling interests	0	0	(1)	0
Net earnings attributable to Cardinal Health, Inc.	$ 386	$ 365	$ 1,095	$ 920
Earnings per common share attributable to Cardinal Health, Inc.:
Net basic earnings per common share (in dollars per share)	$ 1.18	$ 1.10	$ 3.33	$ 2.77
Net diluted earnings per common share (in dollars per share)	$ 1.17	$ 1.09	$ 3.30	$ 2.74
Basic (in shares)	328	330	328	332
Diluted (in shares)	331	334	331	336
Cash dividends declared per common share	$ 0.3870	$ 0.3425	$ 1.1610	$ 1.0275