Condensed Consolidated Statements of Earnings - USD ($) shares in Millions, $ in Millions	3 Months Ended
	Sep. 30, 2025	Sep. 30, 2024
Income Statement [Abstract]
Revenue	$ 64,009	$ 52,277
Cost of Product and Service Sold	61,690	50,375
Gross margin	2,319	1,902
Operating expenses:
Selling, General and Administrative Expense	1,461	1,277
Restructuring and employee severance	20	24
Amortization and other acquisition-related costs	104	74
Acquisition-related cash and share-based compensation costs	64	0
Impairments and (gain)/loss on disposal of assets, net	2	(1)
Litigation (recoveries)/charges, net	0	(40)
Operating earnings	668	568
Other (income)/expense, net	(10)	(5)
Interest expense, net	80	32
Earnings before income taxes	598	541
Provision for income taxes	144	124
Net earnings	454	417
Less: Net earnings attributable to noncontrolling interests	(4)	(1)
Net earnings attributable to Cardinal Health, Inc.	$ 450	$ 416
Earnings per common share attributable to Cardinal Health, Inc.:
Basic (in shares)	$ 1.89	$ 1.71
Diluted (in shares)	$ 1.88	$ 1.70
Weighted-average number of common shares outstanding:
Basic (in shares)	238	243
Diluted (in shares)	239	245
Cash dividends declared per common share	$ 0.5107	$ 0.5056