Condensed Consolidated Statements of Earnings - USD ($) shares in Millions, $ in Millions	3 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Income Statement [Abstract]
Revenue	$ 43,968	$ 39,065
Cost of Goods and Services Sold	42,326	37,350
Gross margin	1,642	1,715
Operating expenses:
Distribution, selling, general and administrative expenses	1,114	1,137
Restructuring and employee severance	18	37
Amortization and other acquisition-related costs	79	118
Impairments and (gain)/loss on disposal of assets, net	(2)	9
Litigation (recoveries)/charges, net	18	1,038
Operating earnings/(loss)	415	(624)
Other (income)/expense, net	(4)	(7)
Interest expense, net	40	45
Loss on early extinguishment of debt		1
Loss on Early Extinguishment of Debt	10	0
Earnings/(loss) before income taxes	369	(663)
Income Tax Expense (Benefit)	97	(410)
Net earnings/(loss)	272	(253)
Less: Net earnings attributable to noncontrolling interests	(1)	0
Net earnings/(loss) attributable to Cardinal Health, Inc.	$ 271	$ (253)
Earnings/(loss) per common share attributable to Cardinal Health, Inc.:
Basic (in shares)	$ 0.94	$ (0.86)
Diluted (in shares)	$ 0.94	$ (0.86)
Weighted-average number of common shares outstanding:
Basic (in shares)	287	293
Diluted (in shares)	289	293
Cash dividends declared per common share	$ 0.4908	$ 0.4859