Consolidated Statements of Earnings - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2018
Income Statement [Abstract]
Revenue	$ 152,922	$ 145,534	$ 136,809
Cost of products sold	146,054	138,700	129,628
Gross margin	6,868	6,834	7,181
Operating expenses:
Distribution, selling, general and administrative expenses	4,572	4,480	4,596
Restructuring and employee severance	122	125	176
Amortization and other acquisition-related costs	524	621	707
Impairments and (gain)/loss on disposal of assets, net	7	(488)	1,417
Litigation (recoveries)/charges, net	5,741	36	159
Operating earnings/(loss)	(4,098)	2,060	126
Other (income)/expense, net	(1)	15	23
Interest expense, net	238	294	329
Loss on early extinguishment of debt	16	0	2
Gain on Sale of Investments	(579)	0	0
Earnings/(loss) before income taxes	(3,772)	1,751	(228)
Provision for/(benefit from) income taxes	(79)	386	(487)
Net earnings	(3,693)	1,365	259
Less: Net earnings attributable to noncontrolling interests	(3)	(2)	(3)
Net earnings/(loss) attributable to Cardinal Health, Inc.	$ (3,696)	$ 1,363	$ 256
Earnings/(loss) per common share attributable to Cardinal Health, Inc.
Earnings Per Share, Basic	$ (12.61)	$ 4.55	$ 0.82
Earnings Per Share, Diluted	$ (12.61)	$ 4.53	$ 0.81
Weighted-average number of common shares outstanding:
Basic (in shares)	293	300	313
Diluted (in shares)	293	301	315