Income Taxes - Provision (Benefit) for Income Taxes (Details) - USD ($) $ in Millions	12 Months Ended
	Jan. 01, 2022	Jan. 02, 2021	Dec. 28, 2019
Income Tax Disclosure [Abstract]
Canada	$ (23.9)	$ (88.4)	$ (57.0)
Outside Canada	30.2	(64.1)	50.7
Income (loss) from continuing operations before income taxes	$ 6.3	$ (152.5)	$ (6.3)