Condensed Consolidated Statements of Earnings - USD ($) shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2024	Mar. 31, 2023
Income Statement [Abstract]
Revenue	$ 54,911	$ 50,487	$ 167,119	$ 151,559
Cost of products sold	52,964	48,702	161,558	146,497
Gross margin	1,947	1,785	5,561	5,062
Operating expenses:
Distribution, selling, general and administrative expenses	1,282	1,179	3,762	3,567
Restructuring and employee severance	53	16	106	62
Amortization and other acquisition-related costs	80	74	207	216
Impairments and (gain)/loss on disposal of assets, net	84	20	622	883
Litigation (recoveries)/charges, net	81	(76)	29	(256)
Operating earnings	367	572	835	590
Other (income)/expense, net	(7)	0	(25)	(5)
Interest expense, net	33	28	55	78
Earnings/(loss) before income taxes	341	544	805	517
Provision for income taxes	82	197	186	189
Net earnings/(loss)	259	347	619	328
Less: Net earnings attributable to noncontrolling interests	(1)	(2)	(3)	(3)
Net earnings attributable to Cardinal Health, Inc.	$ 258	$ 345	$ 616	$ 325
Earnings per common share attributable to Cardinal Health, Inc.:
Basic (in shares)	$ 1.06	$ 1.35	$ 2.51	$ 1.24
Diluted (in shares)	$ 1.05	$ 1.34	$ 2.49	$ 1.23
Weighted-average number of common shares outstanding:
Basic (in shares)	243	256	245	263
Diluted (in shares)	245	258	247	264
Cash dividends declared per common share	$ 0.5006	$ 0.4957	$ 1.5018	$ 1.4871