Condensed Consolidated Statements of Earnings - USD ($) shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2015	Dec. 31, 2014
Income Statement [Abstract]
Revenue	$ 31,445	$ 25,537	$ 59,499	$ 49,607
Cost of products sold	29,836	24,083	56,311	46,813
Gross margin	1,609	1,454	3,188	2,794
Operating expenses:
Distribution, selling, general, and administrative expenses	922	815	1,764	1,590
Restructuring and employee severance	2	7	14	26
Amortization and other acquisition-related costs	114	60	219	112
Impairments and (gain)/loss on disposal of assets, net	(17)	18	(17)	18
Litigation (recoveries)/charges, net	(9)	44	(9)	72
Operating earnings	563	546	1,183	1,012
Other (income)/expense, net	(2)	(1)	6	(4)
Interest expense, net	45	36	90	70
Loss on extinguishment of debt	0	60	0	60
Earnings before income taxes	520	451	1,087	886
Provision for income taxes	194	162	377	331
Net Earnings	326	289	710	555
Net earnings attributable to non-controlling interests	0	0	(1)	0
Net earnings attributable to Cardinal Health, Inc.	$ 326	$ 289	$ 709	$ 555
Earnings per common share attributable to Cardinal Health, Inc.:
Net basic earnings per common share (in dollars per share)	$ 0.99	$ 0.87	$ 2.16	$ 1.66
Net diluted earnings per common share (in dollars per share)	$ 0.98	$ 0.86	$ 2.14	$ 1.65
Basic (in shares)	329	331	329	333
Diluted (in shares)	332	334	332	337
Cash dividends declared per common share	$ 0.3870	$ 0.3425	$ 0.7740	$ 0.6850