Condensed Consolidated Statements of Earnings - USD ($) shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2021	Dec. 31, 2020
Income Statement [Abstract]
Revenue	$ 45,457	$ 41,541	$ 89,425	$ 80,606
Cost of products sold	43,841	39,765	86,167	77,115
Gross margin	1,616	1,776	3,258	3,491
Operating expenses:
Distribution, selling, general and administrative expenses	1,151	1,147	2,265	2,284
Restructuring and employee severance	7	20	25	57
Amortization and other acquisition-related costs	79	116	158	234
Impairments and (gain)/loss on disposal of assets, net	1,295	0	1,293	9
Litigation (recoveries)/charges, net	34	32	52	1,070
Operating earnings/(loss)	(950)	461	(535)	(163)
Other (income)/expense, net	(13)	(12)	(17)	(19)
Interest expense, net	37	46	77	91
Loss on Extinguishment of Debt	0	0	10	1
Gain/(Loss) on sale of equity interest in naviHealth	(1)	0	(1)	0
Earnings/(loss) before income taxes	(973)	427	(604)	(236)
Benefit from income taxes	(1,022)	(203)	(925)	(613)
Net earnings/(loss)	49	630	321	377
Less: Net earnings attributable to noncontrolling interests	0	(1)	(1)	(1)
Net earnings attributable to Cardinal Health, Inc.	$ 49	$ 629	$ 320	$ 376
Earnings per common share attributable to Cardinal Health, Inc.:
Basic (in shares)	$ 0.17	$ 2.14	$ 1.13	$ 1.28
Income (Loss) from Continuing Operations, Per Diluted Share	$ 0.17	$ 2.13	$ 1.12	$ 1.27
Weighted-average number of common shares outstanding:
Basic (in shares)	279	294	283	293
Diluted (in shares)	281	295	285	295
Cash dividends declared per common share	$ 0.4908	$ 0.4859	$ 0.9816	$ 0.9718