Segment Data - Operating Results by Segment (Details) $ in Millions	3 Months Ended
	Mar. 31, 2022 USD ($) reportable_segment	Mar. 31, 2021 USD ($)
Segment Reporting [Abstract]
Number of Reportable Segments | reportable_segment	3
Segment Reporting Information [Line Items]
Net sales	$ 1,148	$ 1,102
Adjusted EBITDA	63	57
Net income (loss) attributable to Covetrus	(2)	(16)
Plus: Depreciation and amortization	40	43
Plus: Interest expense, net	7	9
Less: Income tax (benefit) expense	3	4
Earnings (loss) before interest, taxes, depreciation, and amortization	48	40
Plus: Share-based compensation	13	11
Plus: Strategic consulting	0	2
Plus: Transaction costs	1	1
Plus: Formation of Covetrus	0	2
Plus: Equity method investments and non-consolidated affiliates	1	1
Plus: Other impairments	0	1
Plus: Other items, net	0	(1)
North America
Segment Reporting Information [Line Items]
Net sales	696	635
Europe
Segment Reporting Information [Line Items]
Net sales	340	355
APAC & Emerging Markets
Segment Reporting Information [Line Items]
Net sales	112	112
Operating Segments | North America
Segment Reporting Information [Line Items]
Net sales	696	635
Adjusted EBITDA	57	52
Operating Segments | Europe
Segment Reporting Information [Line Items]
Net sales	344	361
Adjusted EBITDA	18	21
Operating Segments | APAC & Emerging Markets
Segment Reporting Information [Line Items]
Net sales	112	112
Adjusted EBITDA	10	10
Corporate
Segment Reporting Information [Line Items]
Adjusted EBITDA	(22)	(26)
Eliminations
Segment Reporting Information [Line Items]
Net sales	(4)	(6)
Adjusted EBITDA	$ 0	$ 0