Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	3 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Statement of Comprehensive Income [Abstract]
Net earnings/(loss)	$ (4,921)	$ 594
Other comprehensive income/(loss):
Foreign currency translation adjustments and other	(17)	(3)
Net unrealized gain/(loss) on derivative instruments, net of tax	(5)	(1)
Total other comprehensive income/(loss), net of tax	(22)	(4)
Total comprehensive income/(loss)	(4,943)	590
Less: comprehensive income attributable to noncontrolling interests	(1)	(1)
Total comprehensive income attributable to Cardinal Health, Inc.	$ (4,944)	$ 589