Restructuring and other strategic initiatives - Narratives (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 30, 2023	Dec. 31, 2022	Jan. 01, 2022
Restructuring Cost and Reserve
Restructuring expenses	$ 11.8	$ 12.1	$ 9.4
Impairment of fixed and other assets	0.1	1.1	0.6
Severance Costs | Greater China
Restructuring Cost and Reserve
Restructuring expenses	4.5
Severance Costs | MEXICO
Restructuring Cost and Reserve
Restructuring expenses	3.0
Employee Relocation
Restructuring Cost and Reserve
Restructuring expenses	0.9
Other Net Restructuring Expenses | Russian Operations
Restructuring Cost and Reserve
Restructuring expenses		3.5
Severance expenses included in SG&A		0.7
Impairment of inventory		1.1
Impairment of fixed and other assets		1.1
Other Net Restructuring Expenses | Middle East Business
Restructuring Cost and Reserve
Restructuring expenses			1.0
Inventory of Impairment
Restructuring Cost and Reserve
Restructuring expenses	0.1	1.5	1.4
—Consulting expenses
Restructuring Cost and Reserve
Restructuring expenses	3.4
European Office and Distribution Center | Severance Costs
Restructuring Cost and Reserve
Restructuring expenses	$ 0.7	2.5	3.4
European Office and Distribution Center | Employee Relocation
Restructuring Cost and Reserve
Restructuring expenses		$ 2.4
Korean Facility
Restructuring Cost and Reserve
Impairment of fixed and other assets			0.6
Korean Facility | Facility Closing
Restructuring Cost and Reserve
Restructuring expenses			3.7
North America | Inventory of Impairment
Restructuring Cost and Reserve
Restructuring expenses			1.4
Korean And France
Restructuring Cost and Reserve
Gain on disposal of buildings			$ 3.1