CONSOLIDATED AND COMBINED STATEMENTS OF SHAREHOLDERS' EQUITY - USD ($) $ in Millions		Total		Common Stock	Additional Paid-in Capital		Accumulated Deficit	Accumulated Other Comprehensive Loss	Net Former Parent Investment
Common stock, shares beginning balance (in shares) at Dec. 31, 2016				0
Common stock, shares beginning balance at Dec. 31, 2016		$ 1,120		$ 0	$ 0		$ 0	$ (102)	$ 1,222
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (loss) income attributable to Covetrus		64							64
Other comprehensive income (loss)		60						60
Net increase in former parent investment		13							13
Common stock, shares outstanding (in shares) at Dec. 30, 2017				0
Common stock, shares ending 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		101							101
Other comprehensive income (loss)		(40)						(40)
Net increase in former parent investment		174							174
Common stock, shares outstanding (in shares) at Dec. 29, 2018				0
Common stock, shares ending balance at Dec. 29, 2018		1,494		$ 0	0		0	(82)	1,576
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (loss) income attributable to Covetrus	[1]	(1,019)					(1,040)		21
Dividend to former parent		(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)		0		$ 1	608				(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 canceled (in shares)	[2]			(700,400)
Shares canceled		(30)			(30)	[2]
Issuance of shares in connection with share-based compensation plans (in shares)				885,392
Issuance of shares in connection with share-based compensation plans		5			5
Share-based compensation		46			46
Deferred tax impact of acquisition of non-controlling interest		(7)							(7)
Other comprehensive income (loss)		(4)						(4)
Net increase in former parent investment		172	[2]						172
Other		$ 1			1		0
Common stock, shares outstanding (in shares) at Dec. 31, 2019		111,620,507		111,620,507
Common stock, shares ending balance at Dec. 31, 2019		$ 1,256		$ 1	2,381		(1,040)	(86)	0
Common stock, shares beginning balance at Sep. 30, 2019		1,276
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (loss) income attributable to Covetrus		$ (37)
Common stock, shares outstanding (in shares) at Dec. 31, 2019		111,620,507		111,620,507
Common stock, shares ending balance at Dec. 31, 2019		$ 1,256		$ 1	$ 2,381		$ (1,040)	$ (86)	$ 0

[1] 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

[2] See Note 2 - Business Acquisitions