Condensed Consolidated Statements of Earnings - USD ($) shares in Millions, $ in Millions	3 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
Income Statement [Abstract]
Revenue	$ 39,065	$ 37,341
Cost of Goods and Services Sold	37,350	35,662
Gross margin	1,715	1,679
Operating expenses:
Distribution, selling, general and administrative expenses	1,137	1,107
Restructuring and employee severance	37	30
Amortization and other acquisition-related costs	118	132
Impairments and (gain)/loss on disposal of assets, net	9	1
Litigation (recoveries)/charges, net	1,038	5,673
Operating loss	(624)	(5,264)
Other (income)/expense, net	(7)	14
Interest expense, net	45	66
Extinguishment of Debt, Amount	1	0
Loss before income taxes	(663)	(5,344)
Provision for/(benefit from) income taxes	(410)	(423)
Net earnings/(loss)	(253)	(4,921)
Less: Net earnings attributable to noncontrolling interests	0	(1)
Net loss attributable to Cardinal Health, Inc.	$ (253)	$ (4,922)
Loss per common share attributable to Cardinal Health, Inc.:
Basic (in shares)	$ (0.86)	$ (16.65)
Diluted (in shares)	$ (0.86)	$ (16.65)
Weighted-average number of common shares outstanding:
Basic (in shares)	293	296
Diluted (in shares)	293	296
Cash dividends declared per common share	$ 0.4859	$ 0.4811