Restructuring and other impairment charges - additional Information (Detail)	12 Months Ended
	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)	Apr. 02, 2017 property
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 60,120,000	$ 14,790,000	$ 15,871,000
In-process research and development impairment charge	0	0	41,000,000
Asset impairment charges	19,110,000		43,356,000
In Process Research and Development And Wholly Owned Properties
Restructuring Cost and Reserve [Line Items]
In-process research and development impairment charge			43,400,000
In-process research and development
Restructuring Cost and Reserve [Line Items]
In-process research and development impairment charge			41,000,000
Wholly Owned Properties
Restructuring Cost and Reserve [Line Items]
In-process research and development impairment charge			2,400,000
Number of properties sold | property				2
Termination benefits
Restructuring Cost and Reserve [Line Items]
Restructuring charges	57,812,000	13,316,000	13,230,000
Asset impairment charges	0		0
2018 Footprint realignment plan
Restructuring Cost and Reserve [Line Items]
Effect on future cash flows, amount	4,100,000
Restructuring reserve	48,474,000	0
2018 Footprint realignment plan | Termination benefits
Restructuring Cost and Reserve [Line Items]
Restructuring reserve	48,474,000	0
Restructuring charges	53,992,000
2018 Footprint realignment plan | Contract termination costs
Restructuring Cost and Reserve [Line Items]
Restructuring charges	54,993,000
2018 Footprint realignment plan | Minimum
Restructuring Cost and Reserve [Line Items]
Expected restructuring charges	102,000,000
2018 Footprint realignment plan | Minimum | Accelerated Depreciation And Other Costs
Restructuring Cost and Reserve [Line Items]
Expected restructuring charges	40,000,000
2018 Footprint realignment plan | Maximum
Restructuring Cost and Reserve [Line Items]
Expected restructuring charges	133,000,000
2018 Footprint realignment plan | Maximum | Accelerated Depreciation And Other Costs
Restructuring Cost and Reserve [Line Items]
Expected restructuring charges	59,000,000
2016 Footprint realignment plan
Restructuring Cost and Reserve [Line Items]
Restructuring, costs incurred to date	17,500,000
Restructuring reserve	5,416,000	7,665,000	8,895,000
Restructuring charges	2,861,000	2,097,000	12,510,000
2016 Footprint realignment plan | Termination benefits
Restructuring Cost and Reserve [Line Items]
Restructuring reserve	5,416,000	7,296,000	8,135,000
Restructuring charges	2,318,000	1,314,000	11,176,000
2016 Footprint realignment plan | Accelerated Depreciation And Other Costs
Restructuring Cost and Reserve [Line Items]
Restructuring, costs incurred to date	21,800,000
Restructuring expenses	7,100,000	8,300,000	6,400,000
2017 Vascular Solutions integration program
Restructuring Cost and Reserve [Line Items]
Restructuring, costs incurred to date	6,100,000
Restructuring reserve	300,000
Restructuring charges		5,495,000
2017 Vascular Solutions integration program | Termination benefits
Restructuring Cost and Reserve [Line Items]
Restructuring charges		5,377,000
2017 EMEA restructuring program
Restructuring Cost and Reserve [Line Items]
Restructuring, costs incurred to date	5,900,000
Restructuring reserve	800,000
Restructuring charges		5,201,000
2017 EMEA restructuring program | Termination benefits
Restructuring Cost and Reserve [Line Items]
Restructuring charges		4,921,000
Other 2016 restructuring programs
Restructuring Cost and Reserve [Line Items]
Restructuring charges			3,214,000
Other 2016 restructuring programs | Termination benefits
Restructuring Cost and Reserve [Line Items]
Restructuring charges			2,531,000
2014 Manufacturing footprint realignment plan
Restructuring Cost and Reserve [Line Items]
Restructuring, costs incurred to date	12,600,000
Restructuring reserve	3,936,000	3,926,000	5,370,000
Accelerated depreciation	29,100,000
2014 Manufacturing footprint realignment plan | Termination benefits
Restructuring Cost and Reserve [Line Items]
Restructuring reserve	3,936,000	3,926,000	5,370,000
2014 Manufacturing footprint realignment plan | Accelerated Depreciation And Other Costs
Restructuring Cost and Reserve [Line Items]
Restructuring charges	2,200,000	$ 4,000,000	$ 8,500,000
2014 Manufacturing footprint realignment plan | Minimum
Restructuring Cost and Reserve [Line Items]
Expected restructuring charges	47,000,000
Restructuring costs expected cash payment	38,000,000
Restrcturing costs, expected capital expenditures	24,000,000
2014 Manufacturing footprint realignment plan | Minimum | Accelerated Depreciation And Other Costs
Restructuring Cost and Reserve [Line Items]
Expected restructuring charges	34,000,000
2014 Manufacturing footprint realignment plan | Maximum
Restructuring Cost and Reserve [Line Items]
Expected restructuring charges	52,000,000
Restructuring costs expected cash payment	43,000,000
Restrcturing costs, expected capital expenditures	30,000,000
2014 Manufacturing footprint realignment plan | Maximum | Accelerated Depreciation And Other Costs
Restructuring Cost and Reserve [Line Items]
Expected restructuring charges	37,000,000
2016 Footprint realignment plan [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring, costs incurred to date	$ 4,200,000