Document and Entity Information - USD ($) $ in Millions	12 Months Ended
	Dec. 30, 2017	Feb. 21, 2018	Jul. 01, 2017
Document And Entity Information [Abstract]
Document Type	10-K
Amendment Flag	false
Document Period End Date	Dec. 30, 2017
Document Fiscal Year Focus	2017
Document Fiscal Period Focus	FY
Trading Symbol	COT
Entity Registrant Name	COTT CORP /CN/
Entity Central Index Key	0000884713
Current Fiscal Year End Date	--12-30
Entity Well-known Seasoned Issuer	Yes
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		140,081,348
Entity Public Float			$ 1,974.8