Income Tax Expense (Benefit) - Reconciliation of Income Taxes (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 28, 2013	Dec. 29, 2012	Dec. 31, 2011
Income Tax Disclosure [Abstract]
Income tax expense based on Canadian statutory rates	$ 6.1	$ 14.4	$ 10.9
Foreign tax rate differential	(0.7)	1.2	(3.0)
Tax exempt income	(15.1)	(14.8)	(14.2)
Dividend income		0.7	1.0
Changes in enacted tax rates	(1.5)	(0.8)	(0.8)
Increase in valuation allowance	12.5	4.0	10.3
Increase (decrease) to uncertain tax positions	0.8	(0.8)	(0.9)
Non-controlling interests	(1.8)	(1.6)	(1.3)
Other items	1.9	2.3	(2.7)
Income tax expense (benefit)	$ 2.2	$ 4.6	$ (0.7)