Restructuring charges and impairment charges - Charges Recognized (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 01, 2018	Jul. 02, 2017	Jul. 01, 2018	Jul. 02, 2017
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 53,488	$ 870	$ 56,551	$ 13,815
Long-lived asset impairment charge	1,865		1,865
Restructuring and impairment charges	55,353	870	58,416	13,815
Termination benefits
Restructuring Cost and Reserve [Line Items]
Restructuring charges	52,919	612	55,576	13,361
Long-lived asset impairment charge	0		0
Restructuring and impairment charges	52,919		55,576
Other Restructuring costs
Restructuring Cost and Reserve [Line Items]
Restructuring charges	569	$ 258	975	454
Long-lived asset impairment charge	1,865		1,865
Restructuring and impairment charges	2,434		2,840
2018 Footprint realignment plan
Restructuring Cost and Reserve [Line Items]
Restructuring charges	52,474		52,474
2018 Footprint realignment plan | Termination benefits
Restructuring Cost and Reserve [Line Items]
Restructuring charges	52,345		52,345
2018 Footprint realignment plan | Other Restructuring costs
Restructuring Cost and Reserve [Line Items]
Restructuring charges	129		129
Other restructuring programs
Restructuring Cost and Reserve [Line Items]
Restructuring charges	1,014		1,587	1,491
Other restructuring programs | Termination benefits
Restructuring Cost and Reserve [Line Items]
Restructuring charges	574		1,032	1,147
Other restructuring programs | Other Restructuring costs
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 440		555	344
2016 Footprint realignment plan
Restructuring Cost and Reserve [Line Items]
Restructuring charges			2,490	901
2016 Footprint realignment plan | Termination benefits
Restructuring Cost and Reserve [Line Items]
Restructuring charges			2,199	825
2016 Footprint realignment plan | Other Restructuring costs
Restructuring Cost and Reserve [Line Items]
Restructuring charges			$ 291	76
Vascular Solutions integration program
Restructuring Cost and Reserve [Line Items]
Restructuring charges				4,887
Vascular Solutions integration program | Termination benefits
Restructuring Cost and Reserve [Line Items]
Restructuring charges				4,853
Vascular Solutions integration program | Other Restructuring costs
Restructuring Cost and Reserve [Line Items]
Restructuring charges				34
2017 EMEA restructuring program
Restructuring Cost and Reserve [Line Items]
Restructuring charges				6,536
2017 EMEA restructuring program | Termination benefits
Restructuring Cost and Reserve [Line Items]
Restructuring charges				6,536
2017 EMEA restructuring program | Other Restructuring costs
Restructuring Cost and Reserve [Line Items]
Restructuring charges				$ 0