Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	3 Months Ended
	Sep. 30, 2024	Sep. 30, 2023
Statement of Comprehensive Income [Abstract]
Net earnings/(loss)	$ 417	$ (11)
Other comprehensive income/(loss):
Foreign currency translation adjustments and other	5	(11)
Net unrealized gain/(loss) on derivative instruments, net of tax	7	(3)
Total other comprehensive income/(loss), net of tax	12	(14)
Total comprehensive income/(loss)	429	(25)
Less: comprehensive income attributable to noncontrolling interests	(1)	(1)
Total comprehensive income attributable to Cardinal Health, Inc.	$ 428	$ (26)