Restructuring charges and impairment charges - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Oct. 01, 2017	Sep. 30, 2018	Oct. 01, 2017	May 01, 2018
Restructuring Cost and Reserve [Line Items]
Asset impairment charges	$ 17,245		$ 19,110
Employee termination benefits
Restructuring Cost and Reserve [Line Items]
Asset impairment charges	0		0
2018 Footprint realignment plan
Restructuring Cost and Reserve [Line Items]
Restructuring costs expected cash payment	1,800		2,800
Restructuring reserve	51,600		51,600
2018 Footprint realignment plan | Minimum
Restructuring Cost and Reserve [Line Items]
Expected restructuring charges					$ 102,000
2018 Footprint realignment plan | Minimum | Accelerated Depreciation And Other Costs
Restructuring Cost and Reserve [Line Items]
Expected restructuring charges					40,000
2018 Footprint realignment plan | Maximum
Restructuring Cost and Reserve [Line Items]
Expected restructuring charges					133,000
2018 Footprint realignment plan | Maximum | Accelerated Depreciation And Other Costs
Restructuring Cost and Reserve [Line Items]
Expected restructuring charges					$ 59,000
2016 Footprint realignment plan
Restructuring Cost and Reserve [Line Items]
Expected restructuring charges	43,000		43,000
Aggregate restructuring charges incurred	17,400		17,400
Restructuring reserve	5,900		5,900
2016 Footprint realignment plan | Accelerated Depreciation And Other Costs
Restructuring Cost and Reserve [Line Items]
Restructuring expenses	1,700	$ 1,400	5,100	$ 5,500
Aggregate restructuring charges incurred	19,800		19,800
2014 Footprint realignment plan
Restructuring Cost and Reserve [Line Items]
Restructuring expenses			28,700
Aggregate restructuring charges incurred	12,400		12,400
Restructuring reserve	3,800		3,800
2014 Footprint realignment plan | Accelerated Depreciation And Other Costs
Restructuring Cost and Reserve [Line Items]
Restructuring expenses	800	$ 1,000	1,800	$ 3,100
2014 Footprint realignment plan | Minimum
Restructuring Cost and Reserve [Line Items]
Expected restructuring charges	46,000		46,000
2014 Footprint realignment plan | Maximum
Restructuring Cost and Reserve [Line Items]
Expected restructuring charges	51,000		$ 51,000
Intellectual property
Restructuring Cost and Reserve [Line Items]
Asset impairment charges	17,200
Asset impairment charges, net of tax	$ 9,200