Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Mar. 31, 2025	Mar. 31, 2024	Mar. 31, 2025	Mar. 31, 2024
Statement of Comprehensive Income [Abstract]
Net earnings/(loss)	$ 508	$ 262	$ 1,326	$ 620
Other comprehensive income/(loss):
Foreign currency translation adjustments and other	(2)	1	(13)	(4)
Net unrealized gain/(loss) on derivative instruments, net of tax	6	(6)	4	(5)
Total other comprehensive income/(loss), net of tax	4	(5)	(9)	(9)
Total comprehensive income	512	257	1,317	611
Less: Net earnings attributable to noncontrolling interests	(2)	(1)	(4)	(3)
Total comprehensive income attributable to Cardinal Health, Inc.	$ 510	$ 256	$ 1,313	$ 608