CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Income Statement [Abstract]
Net sales (Note 3)	$ 4,575	$ 4,339	$ 3,976
Cost of sales	3,717	3,541	3,227
Gross profit	858	798	749
Operating expenses:
Selling, general and administrative	881	867	808
Goodwill impairment	0	0	938
Operating income (loss)	(23)	(69)	(997)
Other income (expense):
Interest expense, net	(32)	(46)	(54)
Other, net	1	91	22
Income (loss) before taxes	(54)	(24)	(1,029)
Income tax benefit (expense) (Note 13)	0	7	46
Net income (loss)	(54)	(17)	(983)
Net (income) loss attributable to redeemable non-controlling interests	0	(2)	3
Net income (loss) attributable to Covetrus	$ (54)	$ (19)	$ (980)
Earnings (loss) per share attributable to Covetrus: (Note 17)
Basic (in usd per share)	$ (0.39)	$ (0.22)	$ (9.14)
Diluted (in usd per share)	$ (0.39)	$ (0.22)	$ (9.14)
Weighted-average common shares outstanding:
Basic (in shares)	137	118	107
Diluted (in shares)	137	118	107