Restructuring charges - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended
	Apr. 01, 2018	Apr. 02, 2017
2016 Footprint realignment plan
Restructuring Cost and Reserve [Line Items]
Restructuring reserve	$ 6.5
Aggregate restructuring charges incurred	16.8
2016 Footprint realignment plan | Accelerated Depreciation And Other Costs
Restructuring Cost and Reserve [Line Items]
Restructuring expenses	1.4	$ 2.1
Aggregate restructuring charges incurred	16.1
2016 Footprint realignment plan | Minimum
Restructuring Cost and Reserve [Line Items]
Expected restructuring charges	34.0
Restructuring costs expected cash payment	27.0
2016 Footprint realignment plan | Maximum
Restructuring Cost and Reserve [Line Items]
Expected restructuring charges	44.0
Restructuring costs expected cash payment	31.0
2014 Footprint realignment plan
Restructuring Cost and Reserve [Line Items]
Restructuring reserve	3.7
Restructuring expenses	27.3
Aggregate restructuring charges incurred	11.9
2014 Footprint realignment plan | Accelerated Depreciation And Other Costs
Restructuring Cost and Reserve [Line Items]
Restructuring expenses	0.4	$ 1.6
2014 Footprint realignment plan | Minimum
Restructuring Cost and Reserve [Line Items]
Expected restructuring charges	46.0
Restructuring costs expected cash payment	38.0
Expected capital expenditures	24.0
2014 Footprint realignment plan | Maximum
Restructuring Cost and Reserve [Line Items]
Expected restructuring charges	51.0
Restructuring costs expected cash payment	43.0
Expected capital expenditures	$ 30.0