Document and Entity Information - shares	9 Months Ended
	Sep. 28, 2019	Nov. 01, 2019
Document Information [Line Items]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Sep. 28, 2019
Document Transition Report	false
Entity File Number	001-31410
Entity Registrant Name	COTT CORP
Entity Incorporation, State or Country Code	Z4
Entity Tax Identification Number	98-0154711
Entity Address, Address Line One	1200 BRITANNIA ROAD EAST
Entity Address, City or Town	MISSISSAUGA,
Entity Address, State or Province	ON
Entity Address, Postal Zip Code	L4W 4T5
Entity Address, Country	CA
City Area Code	905
Local Phone Number	795-6500
Title of 12(b) Security	Common Shares, no par value per share
Trading Symbol	COT
Security Exchange Name	NYSE
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Central Index Key	0000884713
Current Fiscal Year End Date	--12-28
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	Q3
Amendment Flag	false
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		134,694,893
BCB
Document Information [Line Items]
Entity Address, Address Line One	4221 WEST BOY SCOUT BOULEVARD
Entity Address, Address Line Two	SUITE 400
Entity Address, City or Town	TAMPA,
Entity Address, State or Province	FL
Entity Address, Postal Zip Code	33607
Entity Address, Country	US
Trading Symbol	BCB