CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (UNAUDITED) - USD ($) shares in Millions, $ in Millions		3 Months Ended
		Mar. 31, 2020	Mar. 31, 2019
Income Statement [Abstract]
Net sales		$ 1,065	$ 941
Cost of sales		863	764
Gross profit		202	177
Operating expenses:
Selling, general and administrative		222	186
Operating loss		(20)	(9)
Other income (expense):
Interest income		0	2
Interest expense		(14)	(12)
Other, net		(1)	1
Loss before taxes and equity in earnings of affiliates		(35)	(18)
Less: Income tax benefit		2	4
Net loss		(33)	(14)
Less: net loss attributable to redeemable non-controlling interests		0	1
Net loss attributable to Covetrus	[1]	$ (33)	$ (13)
Loss per share attributable to Covetrus: (Note 14)
Basic (in usd per share)		$ (0.30)	$ (0.14)
Diluted (in usd per share)		$ (0.30)	$ (0.14)
Weighted-average common shares outstanding:
Basic (in shares)		112	95
Diluted (in shares)		112	95

[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