Income Taxes - Summary of Income (Loss) from Continuing Operations before Income Taxes (Details) - USD ($) $ in Millions	12 Months Ended
	Jan. 02, 2022	Jan. 03, 2021	Dec. 29, 2019
Income Tax Disclosure [Abstract]
U.S.	$ (108.9)	$ (215.3)	$ (179.7)
Foreign	82.9	(10.0)	(1.1)
Loss before provision for (benefit from) income taxes	$ (26.0)	$ (225.3)	$ (180.8)