Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Mar. 31, 2017	Mar. 31, 2016
Statement of Comprehensive Income [Abstract]
Net earnings	$ 382	$ 386	$ 1,016	$ 1,096
Other comprehensive loss:
Foreign currency translation adjustments and other	33	16	(47)	(57)
Net unrealized gain/(loss) on derivative instruments, net of tax	2	(3)	27	(4)
Total other comprehensive income/(loss), net of tax	35	13	(20)	(61)
Total comprehensive income	417	399	996	1,035
Less: comprehensive income attributable to noncontrolling interests	(1)	0	(2)	(1)
Total comprehensive income attributable to Cardinal Health, Inc.	$ 416	$ 399	$ 994	$ 1,034