Revisions - Effect of Revision on Consolidated Statements of Comprehensive Income (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jul. 04, 2015	Jun. 28, 2014	Jul. 04, 2015	Jun. 28, 2014
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Net (loss) income	$ 18.3	$ (4.5)	$ 17.1	$ (7.2)
Comprehensive income (loss)	40.5	3.9	13.5	(0.5)
Comprehensive income (loss) attributed to Cott Corporation	$ 24.4	2.5	$ (7.4)	(3.3)
Scenario, Previously Reported [Member]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Net (loss) income		(4.6)		(7.1)
Comprehensive income (loss)		3.8		(0.4)
Comprehensive income (loss) attributed to Cott Corporation		2.4		(3.2)
Scenario, Actual [Member]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Net (loss) income		(4.5)		(7.2)
Comprehensive income (loss)		3.9		(0.5)
Comprehensive income (loss) attributed to Cott Corporation		2.5		(3.3)
Scenario, Adjustment [Member]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Net (loss) income		0.1		(0.1)
Comprehensive income (loss)		0.1		(0.1)
Comprehensive income (loss) attributed to Cott Corporation		$ 0.1		$ (0.1)