Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	3 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
Statement of Comprehensive Income [Abstract]
Net earnings/(loss)	$ 6	$ 111
Other comprehensive loss:
Foreign currency translation adjustments and other	(11)	(58)
Net unrealized gain/(loss) on derivative instruments, net of tax	(3)	(4)
Total other comprehensive loss, net of tax	(14)	(62)
Total comprehensive income/(loss)	(8)	49
Less: comprehensive income attributable to noncontrolling interests	(1)	(1)
Total comprehensive income attributable to Cardinal Health, Inc.	$ (9)	$ 48