Income Taxes - Income Tax Expense (Details) - USD ($) $ in Millions	12 Months Ended
	Jan. 01, 2022	Jan. 02, 2021	Dec. 28, 2019
Current
Canada	$ 0.0	$ 0.0	$ (0.2)
Outside Canada	5.4	1.9	12.2
Income tax expense, Current	5.4	1.9	12.0
Deferred
Canada	0.0	0.0	(1.0)
Outside Canada	4.1	2.4	(6.5)
Income tax expense, Deferred	4.1	2.4	(7.5)
Income tax expense	$ 9.5	$ 4.3	$ 4.5