Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2015
Statement of Comprehensive Income [Abstract]
Net earnings	$ 1,294	$ 1,431	$ 1,215
Earnings from continuing operations	1,294	1,431	1,212
Other comprehensive income/(loss):
Foreign currency translation adjustments and other	(25)	(82)	(104)
Net unrealized gain/(loss) on derivative instruments, net of tax	16	(11)	11
Other comprehensive loss, net of tax	(9)	(93)	(93)
Total other comprehensive loss, net of tax		(93)	(93)
Total comprehensive income	1,285	1,338	1,122
Net Income (Loss) Attributable to Noncontrolling Interest	6	4	0
Total comprehensive income attributable to Cardinal Health, Inc.	$ 1,279	$ 1,334	$ 1,122