Restructuring charges and impairment charges - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Apr. 01, 2018	May 01, 2018
2019 Footprint realignment plan
Restructuring Cost and Reserve [Line Items]
Restructuring costs expected cash payment	$ 0.6
Restructuring reserve	12.5
2019 Footprint realignment plan | Minimum
Restructuring Cost and Reserve [Line Items]
Expected restructuring charges			$ 56.0
2019 Footprint realignment plan | Minimum | Accelerated Depreciation And Other Costs
Restructuring Cost and Reserve [Line Items]
Expected restructuring charges			36.0
2019 Footprint realignment plan | Maximum
Restructuring Cost and Reserve [Line Items]
Expected restructuring charges			70.0
2019 Footprint realignment plan | Maximum | Accelerated Depreciation And Other Costs
Restructuring Cost and Reserve [Line Items]
Expected restructuring charges			$ 45.0
2018 Footprint realignment plan
Restructuring Cost and Reserve [Line Items]
Restructuring costs expected cash payment	0.6
Restructuring reserve	47.5
Aggregate restructuring charges incurred	56.0
Restructuring expenses	4.7
2018 Footprint realignment plan | Minimum
Restructuring Cost and Reserve [Line Items]
Expected restructuring charges	102.0
2018 Footprint realignment plan | Maximum
Restructuring Cost and Reserve [Line Items]
Expected restructuring charges	133.0
2014 Footprint realignment plan
Restructuring Cost and Reserve [Line Items]
Restructuring reserve	3.8
Aggregate restructuring charges incurred	12.7
Restructuring expenses	29.8
2014 Footprint realignment plan | Accelerated Depreciation And Other Costs
Restructuring Cost and Reserve [Line Items]
Restructuring expenses	0.7	$ 0.4
2014 Footprint realignment plan | Minimum
Restructuring Cost and Reserve [Line Items]
Expected restructuring charges	47.0
2014 Footprint realignment plan | Maximum
Restructuring Cost and Reserve [Line Items]
Expected restructuring charges	$ 52.0