Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2024	Mar. 31, 2023
Statement of Comprehensive Income [Abstract]
Net earnings/(loss)	$ 259	$ 347	$ 619	$ 328
Other comprehensive income/(loss):
Foreign currency translation adjustments and other	1	4	(4)	(34)
Net unrealized gain/(loss) on derivative instruments, net of tax	(6)	0	(5)	6
Total other comprehensive income/(loss), net of tax	(5)	4	(9)	(28)
Total comprehensive income	254	351	610	300
Less: Net earnings attributable to noncontrolling interests	(1)	(2)	(3)	(3)
Total comprehensive income attributable to Cardinal Health, Inc.	$ 253	$ 349	$ 607	$ 297