Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2021
Statement of Comprehensive Income [Abstract]
Net earnings	$ 262	$ (932)	$ 612
Other comprehensive income/(loss):
Foreign currency translation adjustments and other	(35)	(56)	46
Net unrealized gain/(loss) on derivative instruments, net of tax	(2)	(24)	24
Total other comprehensive income/(loss), net of tax	(37)	(80)	70
Total comprehensive income/(loss)	225	(1,012)	682
Net Income (Loss) Attributable to Noncontrolling Interest	1	1	1
Total comprehensive income attributable to Cardinal Health, Inc.	$ 224	$ (1,013)	$ 681