Condensed Consolidated Statements of Earnings - USD ($) shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2019	Dec. 31, 2018
Income Statement [Abstract]
Revenue	$ 39,735	$ 37,740	$ 77,076	$ 72,953
Cost of products sold	38,021	36,010	73,683	69,556
Gross margin	1,714	1,730	3,393	3,397
Operating expenses:
Distribution, selling, general and administrative expenses	1,163	1,064	2,270	2,219
Restructuring and employee severance	56	12	86	44
Amortization and other acquisition-related costs	133	157	265	314
Impairments and (gain)/loss on disposal of assets, net	7	8	8	(503)
Litigation (recoveries)/charges, net	21	(15)	5,694	3
Operating earnings/(loss)	334	504	(4,930)	1,320
Other (income)/expense, net	(12)	21	2	25
Interest expense, net	63	76	129	152
Loss on Extinguishment of Debt	4	0	4	0
Earnings/(loss) before income taxes	279	407	(5,065)	1,143
Provision for/(benefit from) income taxes	59	126	(364)	269
Net earnings/(loss)	220	281	(4,701)	874
Less: Net earnings attributable to noncontrolling interests	0	(1)	(1)	(1)
Net earnings/(loss) attributable to Cardinal Health, Inc.	$ 220	$ 280	$ (4,702)	$ 873
Earnings/(loss) per common share attributable to Cardinal Health, Inc.:
Basic (in shares)	$ 0.75	$ 0.94	$ (15.99)	$ 2.90
Income (Loss) from Continuing Operations, Per Diluted Share	$ 0.75	$ 0.93	$ (15.99)	$ 2.88
Weighted-average number of common shares outstanding:
Basic (in shares)	292	299	294	302
Diluted (in shares)	294	300	294	303
Cash dividends declared per common share	$ 0.4811	$ 0.4763	$ 0.9622	$ 0.9526