Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2024	Dec. 31, 2023
Statement of Comprehensive Income [Abstract]
Net earnings/(loss)	$ 401	$ 369	$ 818	$ 358
Other comprehensive income/(loss):
Foreign currency translation adjustments and other	(16)	6	(11)	(5)
Net unrealized gain/(loss) on derivative instruments, net of tax	(9)	4	(2)	1
Total other comprehensive income/(loss), net of tax	(25)	10	(13)	(4)
Total comprehensive income	376	379	805	354
Less: Net earnings attributable to noncontrolling interests	(1)	(1)	(2)	(2)
Total comprehensive income attributable to Cardinal Health, Inc.	$ 375	$ 378	$ 803	$ 352