Leases - Components of Lease Expense (Details) - USD ($) $ in Millions	12 Months Ended
	Jan. 02, 2022	Jan. 03, 2021	Dec. 29, 2019
Operating:
Operating lease cost	$ 25.8	$ 27.0	$ 26.7
Short-term lease cost	2.6	3.6	3.5
Variable lease cost	5.7	6.8	6.7
Financing:
Amortization of ROU assets	1.4	1.3	0.4
Interest on lease liabilities	0.2	0.4	0.2
Total lease cost	$ 35.7	$ 39.1	$ 37.5