Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2023	Dec. 31, 2022
Statement of Comprehensive Income [Abstract]
Net earnings/(loss)	$ 354	$ (130)	$ 360	$ (19)
Other comprehensive income/(loss):
Foreign currency translation adjustments and other	6	20	(5)	(38)
Net unrealized gain on derivative instruments, net of tax	4	10	1	6
Total other comprehensive income/(loss), net of tax	10	30	(4)	(32)
Total comprehensive income/(loss)	364	(100)	356	(51)
Less: Net earnings attributable to noncontrolling interests	(1)	0	(2)	(1)
Total comprehensive income attributable to Cardinal Health, Inc.	$ 363	$ (100)	$ 354	$ (52)