CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands	12 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2021
Income Statement [Abstract]
Revenue	$ 262,173,411,000	$ 238,587,006,000	$ 213,988,843,000
Cost of goods sold	253,213,918,000	230,290,639,000	207,045,615,000
Gross profit	8,959,493,000	8,296,367,000	6,943,228,000
Operating expenses:
Distribution, selling, and administrative	5,309,984,000	4,848,962,000	3,594,251,000
Depreciation	410,341,000	386,595,000	326,824,000
Amortization	553,563,000	307,300,000	178,348,000
Litigation and opioid-related (credit) expenses	(24,693,000)	123,191,000	272,623,000
Acquisition-related deal and integration expenses	139,683,000	119,561,000	116,969,000
Restructuring and other expenses	229,884,000	63,498,000	82,319,000
Goodwill impairment	0	75,936,000	6,373,000
Impairment of assets	0	4,946,000	11,324,000
Operating income	2,340,731,000	2,366,378,000	2,354,197,000
Other income, net	(49,036,000)	(27,352,000)	(41,736,000)
Interest expense, net	228,931,000	210,673,000	174,074,000
Income before income taxes	2,160,836,000	2,183,057,000	2,221,859,000
Income tax expense	428,260,000	516,517,000	677,251,000
Net income	1,732,576,000	1,666,540,000	1,544,608,000
Net loss (income) attributable to noncontrolling interests	12,717,000	32,280,000	(4,676,000)
Net income attributable to Cencora, Inc.	$ 1,745,293,000	$ 1,698,820,000	$ 1,539,932,000
Earnings per share:
Basic (in usd per share)	$ 8.62	$ 8.15	$ 7.48
Diluted (in usd per share)	$ 8.53	$ 8.04	$ 7.39
Weighted average common shares outstanding:
Basic (in shares)	202,511	208,472	205,919
Diluted (in shares)	204,591	211,210	208,465