Restructuring charges and impairment charges - Charges Recognized (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Oct. 01, 2017	Sep. 30, 2018	Oct. 01, 2017
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 1,964	$ (92)	$ 58,515	$ 13,723
Asset impairment charges	17,245		19,110
Restructuring and impairment charges	19,209	(92)	77,625	13,723
Termination benefits
Restructuring Cost and Reserve [Line Items]
Restructuring charges	1,587	(554)	57,160	12,807
Asset impairment charges	0		0
Restructuring and impairment charges	1,587		57,160
Other Restructuring costs
Restructuring Cost and Reserve [Line Items]
Restructuring charges	377	$ 462	1,355	916
Asset impairment charges	17,245		19,110
Restructuring and impairment charges	17,622		20,465
2018 Footprint realignment plan
Restructuring Cost and Reserve [Line Items]
Restructuring charges	1,264		53,738
2018 Footprint realignment plan | Termination benefits
Restructuring Cost and Reserve [Line Items]
Restructuring charges	1,119		53,463
2018 Footprint realignment plan | Other Restructuring costs
Restructuring Cost and Reserve [Line Items]
Restructuring charges	145		275
Other restructuring programs
Restructuring Cost and Reserve [Line Items]
Restructuring charges	700		1,981	1,859
Other restructuring programs | Termination benefits
Restructuring Cost and Reserve [Line Items]
Restructuring charges	468		1,318	1,352
Other restructuring programs | Other Restructuring costs
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 232		663	507
2016 Footprint realignment plan
Restructuring Cost and Reserve [Line Items]
Restructuring charges			2,796	1,332
2016 Footprint realignment plan | Termination benefits
Restructuring Cost and Reserve [Line Items]
Restructuring charges			2,379	1,099
2016 Footprint realignment plan | Other Restructuring costs
Restructuring Cost and Reserve [Line Items]
Restructuring charges			$ 417	233
Vascular Solutions integration program
Restructuring Cost and Reserve [Line Items]
Restructuring charges				4,626
Vascular Solutions integration program | Termination benefits
Restructuring Cost and Reserve [Line Items]
Restructuring charges				4,534
Vascular Solutions integration program | Other Restructuring costs
Restructuring Cost and Reserve [Line Items]
Restructuring charges				92
2017 EMEA restructuring program
Restructuring Cost and Reserve [Line Items]
Restructuring charges				5,906
2017 EMEA restructuring program | Termination benefits
Restructuring Cost and Reserve [Line Items]
Restructuring charges				5,822
2017 EMEA restructuring program | Other Restructuring costs
Restructuring Cost and Reserve [Line Items]
Restructuring charges				$ 84