Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2025	Dec. 31, 2024
Statement of Comprehensive Income [Abstract]
Net earnings/(loss)	$ 471	$ 401	$ 925	$ 818
Other comprehensive income/(loss):
Foreign currency translation adjustments and other	9	(16)	5	(11)
Net unrealized loss on derivative instruments, net of tax	(3)	(9)	(3)	(2)
Total other comprehensive income/(loss), net of tax	6	(25)	2	(13)
Total comprehensive income	477	376	927	805
Less: Net earnings attributable to noncontrolling interests	(4)	(1)	(8)	(2)
Total comprehensive income attributable to Cardinal Health, Inc.	$ 473	$ 375	$ 919	$ 803