CONSOLIDATED AND COMBINED STATEMENT OF EQUITY (UNAUDITED) - USD ($) $ in Millions		Total	Common Stock	Additional Paid-in Capital	Accumulated Deficit	Accumulated Other Comprehensive Loss	Net Parent Investment
Beginning balance (in shares) at Dec. 30, 2017			0
Beginning balance at Dec. 30, 2017		$ 1,257	$ 0	$ 0	$ 0	$ (42)	$ 1,299
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (loss) income attributable to Covetrus		67					67
Net increase (decrease) in parent investment		260					260
Other comprehensive loss		(31)				(31)
Ending balance (in shares) at Sep. 30, 2018			0
Ending balance at Sep. 30, 2018		1,556	$ 0	0	0	(73)	1,629
Beginning balance (in shares) at Jun. 30, 2018			0
Beginning balance at Jun. 30, 2018		1,541	$ 0	0	0	(68)	1,609
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (loss) income attributable to Covetrus		16					16
Net increase (decrease) in parent investment		4					4
Other comprehensive loss		(5)				(5)
Ending balance (in shares) at Sep. 30, 2018			0
Ending balance at Sep. 30, 2018		1,556	$ 0	0	0	(73)	1,629
Beginning balance (in shares) at Dec. 29, 2018			0
Beginning balance at Dec. 29, 2018		1,493	$ 0	0	0	(83)	1,576
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (loss) income attributable to Covetrus	[1]	(929)			(939)		10
Dividend to Henry Schein		(1,174)		(21)			(1,153)
Issuance of shares at Separation (including share sale investors) (in shares)			71,693,426
Issuance of shares at Separation (including Share Sale investors)		1	$ 1	609			(609)
Issuance of shares in connection with the Acquisition (in shares)	[2]		39,742,089
Issuance of shares in connection with the Acquisition	[2]	1,772		1,772
Shares held in escrow expected to be canceled	[3]	(30)		(30)
Net increase (decrease) in parent investment		176					176
Exercise of stock options (in shares)			618,758
Exercise of stock options		4		4
Share-based compensation		35		35
Other comprehensive loss		$ (19)				(19)
Ending balance (in shares) at Sep. 30, 2019		112,054,273	112,054,273
Ending balance at Sep. 30, 2019		$ 1,329	$ 1	2,369	(939)	(102)	0
Beginning balance (in shares) at Jun. 30, 2019			111,932,491
Beginning balance at Jun. 30, 2019		2,247	$ 1	2,357	(33)	(78)	0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (loss) income attributable to Covetrus	[1]	(906)			(906)		0
Exercise of stock options (in shares)			121,782
Exercise of stock options		2		2
Share-based compensation		10		10
Other comprehensive loss		$ (24)				(24)
Ending balance (in shares) at Sep. 30, 2019		112,054,273	112,054,273
Ending balance at Sep. 30, 2019		$ 1,329	$ 1	$ 2,369	$ (939)	$ (102)	$ 0

[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 (b) See discussion in Note 3 - Business Acquisitions

[2] (b) See discussion in Note 3 - Business Acquisitions

[3] (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