CONDENSED CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY (UNAUDITED) - USD ($) $ in Millions	Total	Common Stock	Accumulated Other Comprehensive Income (Loss)	Additional Paid-in Capital	Accumulated Deficit
Beginning balance (in shares) at Dec. 31, 2020		136,017,964
Beginning balance at Dec. 31, 2020	$ 1,537	$ 1	$ (66)	$ 2,629	$ (1,027)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss) attributable to Covetrus	(47)				(47)
Redeemable non-controlling interest redemption value adjustment	(2)			(2)
Issuance of shares in connection with share-based compensation plans, net of shares withheld for taxes (in shares)		1,341,740
Issuance of shares in connection with share-based compensation plans, net of shares withheld for taxes	(11)			(11)
Share-based compensation	25			25
Other comprehensive income (loss)	0		0
Ending balance (in shares) at Jun. 30, 2021		137,359,704
Ending balance at Jun. 30, 2021	1,502	$ 1	(66)	2,641	(1,074)
Beginning balance (in shares) at Mar. 31, 2021		136,342,036
Beginning balance at Mar. 31, 2021	1,520	$ 1	(75)	2,637	(1,043)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss) attributable to Covetrus	(31)				(31)
Redeemable non-controlling interest redemption value adjustment	(2)			(2)
Issuance of shares in connection with share-based compensation plans, net of shares withheld for taxes (in shares)		1,017,668
Issuance of shares in connection with share-based compensation plans, net of shares withheld for taxes	(8)			(8)
Share-based compensation	14			14
Other comprehensive income (loss)	9		9
Ending balance (in shares) at Jun. 30, 2021		137,359,704
Ending balance at Jun. 30, 2021	$ 1,502	$ 1	(66)	2,641	(1,074)
Beginning balance (in shares) at Dec. 31, 2021	138,011,969	138,011,969
Beginning balance at Dec. 31, 2021	$ 1,511	$ 1	(79)	2,670	(1,081)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss) attributable to Covetrus	(6)				(6)
Issuance of shares in connection with the Acquisition (in shares)		573,365
Issuance of shares in connection with acquisitions	10			10
Issuance of shares in connection with share-based compensation plans, net of shares withheld for taxes (in shares)		1,253,930
Issuance of shares in connection with share-based compensation plans, net of shares withheld for taxes	(2)			(2)
Share-based compensation	23			23
Other comprehensive income (loss)	$ (31)		(31)
Ending balance (in shares) at Jun. 30, 2022	139,839,264	139,839,264
Ending balance at Jun. 30, 2022	$ 1,505	$ 1	(110)	2,701	(1,087)
Beginning balance (in shares) at Mar. 31, 2022		139,143,360
Beginning balance at Mar. 31, 2022	1,528	$ 1	(81)	2,691	(1,083)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss) attributable to Covetrus	(4)				(4)
Issuance of shares in connection with share-based compensation plans, net of shares withheld for taxes (in shares)		695,904
Issuance of shares in connection with share-based compensation plans, net of shares withheld for taxes	0
Share-based compensation	10			10
Other comprehensive income (loss)	$ (29)		(29)
Ending balance (in shares) at Jun. 30, 2022	139,839,264	139,839,264
Ending balance at Jun. 30, 2022	$ 1,505	$ 1	$ (110)	$ 2,701	$ (1,087)