Condensed Consolidated Statements of Earnings - USD ($) shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2023	Dec. 31, 2022
Income Statement [Abstract]
Revenue	$ 57,445	$ 51,469	$ 112,208	$ 101,072
Cost of products sold	55,599	49,806	108,594	97,795
Gross margin	1,846	1,663	3,614	3,277
Operating expenses:
Distribution, selling, general and administrative expenses	1,283	1,191	2,480	2,388
Restructuring and employee severance	28	17	53	46
Amortization and other acquisition-related costs	63	71	127	142
Impairments and (gain)/loss on disposal of assets, net	1	710	538	863
Litigation (recoveries)/charges, net	(11)	(207)	(52)	(180)
Operating earnings/(loss)	482	(119)	468	18
Other (income)/expense, net	(16)	(7)	(18)	(5)
Interest expense, net	8	25	22	50
Earnings/(loss) before income taxes	490	(137)	464	(27)
Provision for/(benefit from) income taxes	136	(7)	104	(8)
Net earnings/(loss)	354	(130)	360	(19)
Less: Net earnings attributable to noncontrolling interests	(1)	0	(2)	(1)
Net earnings/(loss) attributable to Cardinal Health, Inc.	$ 353	$ (130)	$ 358	$ (20)
Earnings/(Loss) per common share attributable to Cardinal Health, Inc.:
Basic (in shares)	$ 1.44	$ (0.50)	$ 1.45	$ (0.08)
Diluted (in shares)	$ 1.43	$ (0.50)	$ 1.44	$ (0.08)
Weighted-average number of common shares outstanding:
Basic (in shares)	245	261	247	266
Diluted (in shares)	246	261	248	266
Cash dividends declared per common share	$ 0.5006	$ 0.4957	$ 1.0012	$ 0.9914