CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (UNAUDITED) - USD ($) shares in Millions, $ in Millions		3 Months Ended		6 Months Ended
		Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Income Statement [Abstract]
Net sales		$ 1,026	$ 1,009	$ 2,091	$ 1,950
Cost of sales		834	816	1,696	1,580
Gross profit		192	193	395	370
Operating expenses:
Selling, general and administrative		196	198	419	384
Operating loss		(4)	(5)	(24)	(14)
Other income (expense):
Interest income		1	2	1	3
Interest expense		(14)	(15)	(28)	(26)
Other Nonoperating Income (Expense)		76	13	75	15
Income (loss) before taxes and equity in earnings of affiliates		59	(5)	24	(22)
Income tax benefit		(6)	(5)	(4)	(1)
Equity in net earnings of affiliates (Note 3)		1	0	1	0
Net income (loss)		54	(10)	21	(23)
Less: net income attributable to redeemable non-controlling interests		0	0	(1)	0
Net income (loss) attributable to Covetrus	[1]	$ 54	$ (10)	$ 20	$ (23)
Earnings (loss) per share attributable to Covetrus: (Note 15)
Basic (in usd per share)		$ 0.40	$ (0.09)	$ 0.15	$ (0.22)
Diluted (in usd per share)		$ 0.40	$ (0.09)	$ 0.15	$ (0.22)
Weighted-average common shares outstanding:
Basic (in shares)		112	112	112	103
Diluted (in shares)		113	112	113	103

[1] (a) Net income earned from January 1, 2019 through February 7, 2019 is attributed to the Former Parent as it was the sole shareholder prior to February 7, 2019.