Summary of Quarterly Data (Unaudited) (Tables)

12 Months Ended

Dec. 31, 2020

Quarterly Financial Information Disclosure [Abstract]

Summary of Quarterly Data

A summary of quarterly data follows:

	For the Three Months Ended
	December 31, 2020		September 30, 2020		June 30, 2020		March 31, 2020
Net sales	$	1,121	$	1,126	$	1,026	$	1,065
Gross profit	$	206	$	197	$	192	$	202
Goodwill impairment	$	—	$	—	$	—	$	—
Operating income (loss)	$	(19)	$	(27)	$	(4)	$	(20)
Net income (loss) attributable to Covetrus	$	(4)	$	(35)	$	54	$	(33)
Earnings (loss) per share:
Basic	$	(0.04)	$	(0.33)	$	0.40	$	(0.30)
Diluted	$	(0.04)	$	(0.33)	$	0.40	$	(0.30)

	For the Three Months Ended
	December 31, 2019		September 30, 2019		June 30, 2019		March 31, 2019
Net sales	$	1,008	$	1,018	$	1,009	$	941
Gross profit (a)	$	188	$	191	$	193	$	177
Goodwill impairment	$	(1)	$	939	$	—	$	—
Operating income (loss)	$	(25)	$	(958)	$	(5)	$	(9)
Net income (loss) attributable to Covetrus (b)	$	(37)	$	(920)	$	(10)	$	(13)
Earnings (Loss) per share: (b)
Basic	$	(0.33)	$	(8.22)	$	(0.09)	$	(0.14)
Diluted	$	(0.33)	$	(8.22)	$	(0.09)	$	(0.14)
(a) 2019 quarterly data reflects a reclassification of Vets First Choice shipping expenses that were previously included in Selling, general and administrative into Cost of sales to classify these Vets First Choice shipping expenses consistently with the rest of our business
(b) The third quarter ended September 30, 2019 includes a revision (see Note 16 - Income Taxes)