Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2022	Mar. 31, 2021
Statement of Comprehensive Income [Abstract]
Net earnings/(loss)	$ (1,390)	$ 120	$ (1,069)	$ 497
Other comprehensive income/(loss):
Foreign currency translation adjustments and other	(4)	9	(47)	42
Net unrealized gain/(loss) on derivative instruments, net of tax	12	(4)	4	14
Total other comprehensive income/(loss), net of tax	8	5	(43)	56
Total comprehensive income/(loss)	(1,382)	125	(1,112)	553
Less: Net earnings attributable to noncontrolling interests	(1)	(1)	(2)	(2)
Total comprehensive income attributable to Cardinal Health, Inc.	$ (1,383)	$ 124	$ (1,114)	$ 551