Restructuring and impairment charges - Restructuring program (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Restructuring Cost and Reserve [Line Items]
Total restructuring charges	$ 14,999	$ 17,103	$ 15,239
Asset impairment charges	6,739	21,388	6,966
Total restructuring and impairment charges	21,738	38,491	22,205
Respiratory divestiture plan
Restructuring Cost and Reserve [Line Items]
Total restructuring charges	2,694
2021 Restructuring plan
Restructuring Cost and Reserve [Line Items]
Total restructuring charges	7,357
2020 Workforce reduction plan
Restructuring Cost and Reserve [Line Items]
Total restructuring charges		8,847
2019 Footprint realignment plan
Restructuring Cost and Reserve [Line Items]
Total restructuring charges	253	1,542	13,753
2018 Footprint realignment plan
Restructuring Cost and Reserve [Line Items]
Total restructuring charges	2,476	5,948	(939)
Other restructuring programs
Restructuring Cost and Reserve [Line Items]
Total restructuring charges	2,219	766	2,425
Termination benefits
Restructuring Cost and Reserve [Line Items]
Total restructuring charges	11,762	14,634	12,683
Asset impairment charges	0	0	0
Total restructuring and impairment charges	11,762	14,634	12,683
Termination benefits | Respiratory divestiture plan
Restructuring Cost and Reserve [Line Items]
Total restructuring charges	2,687
Termination benefits | 2021 Restructuring plan
Restructuring Cost and Reserve [Line Items]
Total restructuring charges	7,280
Termination benefits | 2020 Workforce reduction plan
Restructuring Cost and Reserve [Line Items]
Total restructuring charges		8,494
Termination benefits | 2019 Footprint realignment plan
Restructuring Cost and Reserve [Line Items]
Total restructuring charges	(111)	647	13,683
Termination benefits | 2018 Footprint realignment plan
Restructuring Cost and Reserve [Line Items]
Total restructuring charges	2,335	5,565	(1,787)
Termination benefits | Other restructuring programs
Restructuring Cost and Reserve [Line Items]
Total restructuring charges	(429)	(72)	787
Other costs
Restructuring Cost and Reserve [Line Items]
Total restructuring charges	3,237	2,469	2,556
Asset impairment charges	6,739	21,388	6,966
Total restructuring and impairment charges	9,976	23,857	9,522
Other costs | Respiratory divestiture plan
Restructuring Cost and Reserve [Line Items]
Total restructuring charges	7
Other costs | 2021 Restructuring plan
Restructuring Cost and Reserve [Line Items]
Total restructuring charges	77
Other costs | 2020 Workforce reduction plan
Restructuring Cost and Reserve [Line Items]
Total restructuring charges		353
Other costs | 2019 Footprint realignment plan
Restructuring Cost and Reserve [Line Items]
Total restructuring charges	364	895	70
Other costs | 2018 Footprint realignment plan
Restructuring Cost and Reserve [Line Items]
Total restructuring charges	141	383	848
Other costs | Other restructuring programs
Restructuring Cost and Reserve [Line Items]
Total restructuring charges	$ 2,648	$ 838	$ 1,638