Condensed Consolidated Statements of Earnings - USD ($) shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Mar. 31, 2021	Mar. 31, 2020
Income Statement [Abstract]
Revenue	$ 39,275	$ 39,157	$ 119,881	$ 116,233
Cost of products sold	37,463	37,272	114,578	110,955
Gross margin	1,812	1,885	5,303	5,278
Operating expenses:
Distribution, selling, general and administrative expenses	1,120	1,165	3,404	3,435
Restructuring and employee severance	24	(6)	81	80
Amortization and other acquisition-related costs	111	130	345	395
Impairments and (gain)/loss on disposal of assets, net	69	(1)	78	7
Litigation (recoveries)/charges, net	15	35	1,085	5,729
Operating earnings/(loss)	473	562	310	(4,368)
Other (income)/expense, net	(12)	19	(31)	21
Interest expense, net	45	60	136	189
Loss on Extinguishment of Debt	0	5	1	9
Earnings/(loss) before income taxes	440	478	204	(4,587)
Provision for/(benefit from) income taxes	320	127	(293)	(237)
Net earnings/(loss)	120	351	497	(4,350)
Less: Net earnings attributable to noncontrolling interests	(1)	(1)	(2)	(2)
Net earnings/(loss) attributable to Cardinal Health, Inc.	$ 119	$ 350	$ 495	$ (4,352)
Earnings/(loss) per common share attributable to Cardinal Health, Inc.:
Basic (in shares)	$ 0.41	$ 1.20	$ 1.69	$ (14.84)
Income (Loss) from Continuing Operations, Per Diluted Share	$ 0.40	$ 1.19	$ 1.68	$ (14.84)
Weighted-average number of common shares outstanding:
Basic (in shares)	292	292	293	293
Diluted (in shares)	294	294	294	293
Cash dividends declared per common share	$ 0.4859	$ 0.4811	$ 1.4577	$ 1.4433