Consolidated Statements of Comprehensive Income/(Loss) - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2022
Statement of Comprehensive Income [Abstract]
Net earnings/(loss)	$ 853	$ 331	$ (937)
Other comprehensive income/(loss):
Foreign currency translation adjustments and other	(1)	(35)	(56)
Net unrealized loss on derivative instruments, net of tax	(15)	(2)	(24)
Total other comprehensive loss, net of tax	(16)	(37)	(80)
Total comprehensive income/(loss)	837	294	(1,017)
Net Income (Loss) Attributable to Noncontrolling Interest	1	1	1
Total comprehensive income attributable to Cardinal Health, Inc.	$ 836	$ 293	$ (1,018)