Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	3 Months Ended
	Sep. 30, 2018	Sep. 30, 2017
Statement of Comprehensive Income [Abstract]
Net earnings	$ 594	$ 117
Other comprehensive income/(loss):
Foreign currency translation adjustments and other	(3)	40
Net unrealized gain/(loss) on derivative instruments, net of tax	(1)	(1)
Total other comprehensive income/(loss), net of tax	(4)	39
Total comprehensive income	590	156
Less: comprehensive income attributable to noncontrolling interests	(1)	(2)
Total comprehensive income attributable to Cardinal Health, Inc.	$ 589	$ 154