Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	3 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Statement of Comprehensive Income [Abstract]
Net earnings	$ 117	$ 310
Other comprehensive income:
Foreign currency translation adjustments and other	40	(1)
Net unrealized gain/(loss) on derivative instruments, net of tax	(1)	1
Total other comprehensive income, net of tax	39	0
Total comprehensive income	156	310
Less: comprehensive income attributable to noncontrolling interests	(2)	(1)
Total comprehensive income attributable to Cardinal Health, Inc.	$ 154	$ 309