Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Millions	3 Months Ended								12 Months Ended
	Dec. 28, 2019	Sep. 28, 2019	Jun. 29, 2019	Mar. 30, 2019	Dec. 29, 2018	Sep. 29, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 28, 2019	Dec. 29, 2018	Dec. 30, 2017
Income Statement [Abstract]
Revenue, net	$ 600.2	$ 616.1	$ 604.1	$ 574.1	$ 599.2	$ 609.3	$ 603.6	$ 560.8	$ 2,394.5	$ 2,372.9	$ 2,269.7
Cost of sales	294.6	289.9	291.0	291.2	309.0	298.8	302.2	287.3	1,166.7	1,197.3	1,142.0
Gross profit	305.6	326.2	313.1	282.9	290.2	310.5	301.4	273.5	1,227.8	1,175.6	1,127.7
Selling, general and administrative expenses	275.9	280.8	284.2	272.1	275.9	279.9	275.2	261.1	1,113.0	1,092.1	1,043.2
Loss on disposal of property, plant and equipment, net	2.9	1.1	1.6	1.9	5.6	1.2	1.3	1.3	7.5	9.4	10.2
Acquisition and integration expenses	6.7	2.7	2.7	4.8	4.5	1.6	4.2	5.0	16.9	15.3	30.4
Operating income	20.1	41.6	24.6	4.1	4.2	27.8	20.7	6.1	90.4	58.8	43.9
Other expense (income), net									2.8	(42.9)	(8.0)
Interest expense, net									78.2	77.6	85.5
Income (loss) from continuing operations before income taxes									9.4	24.1	(33.6)
Income tax expense (benefit)									9.5	(4.8)	(30.0)
Net (loss) income from continuing operations	6.6	8.6	4.4	(19.7)	3.6	8.5	12.2	4.6	(0.1)	28.9	(3.6)
Net income from discontinued operations, net of income taxes	1.5	1.5	0.0	0.0	(2.9)	1.5	(1.4)	357.4	3.0	354.6	10.7
Net income									2.9	383.5	7.1
Less: Net income attributable to non-controlling interests - discontinued operations					0.0	0.0	0.0	0.6	0.0	0.6	8.5
Net income (loss) attributable to Cott Corporation	$ 8.1	$ 10.1	$ 4.4	$ (19.7)	$ 0.7	$ 10.0	$ 10.8	$ 361.4	$ 2.9	$ 382.9	$ (1.4)
Basic:
Continuing operations (In USD per share)	$ 0.05	$ 0.06	$ 0.03	$ (0.14)	$ 0.03	$ 0.06	$ 0.09	$ 0.03	$ 0	$ 0.21	$ (0.03)
Discontinued operations (In USD per share)	0.01	0.01	0	0	(0.02)	0.01	(0.01)	2.55	0.02	2.54	0.02
Net income (loss) (In USD per share)	0.06	0.07	0.03	(0.14)	0.01	0.07	0.08	2.58	0.02	2.75	(0.01)
Diluted:
Continuing operations (In USD per share)	0.05	0.06	0.03	(0.14)	0.03	0.06	0.09	0.03	0	0.21	(0.03)
Discontinued operations (In USD per share)	0.01	0.01	0	0	(0.02)	0.01	(0.01)	2.51	0.02	2.50	0.02
Net income (loss) (In USD per share)	$ 0.06	$ 0.07	$ 0.03	$ (0.14)	$ 0.01	$ 0.07	$ 0.08	$ 2.54	$ 0.02	$ 2.71	$ (0.01)
Weighted average common shares outstanding (in thousands)
Basic (in shares)									135,224	139,097	139,078
Diluted (in shares)									135,224	141,436	139,078