Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	3 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Statement of Comprehensive Income [Abstract]
Net earnings/(loss)	$ 272	$ (253)
Other comprehensive income/(loss):
Foreign currency translation adjustments and other	(25)	12
Net unrealized gain/(loss) on derivative instruments, net of tax	(2)	5
Total other comprehensive income/(loss), net of tax	(27)	17
Total comprehensive income/(loss)	245	(236)
Less: comprehensive income attributable to noncontrolling interests	(1)	0
Total comprehensive income attributable to Cardinal Health, Inc.	$ 244	$ (236)