Restructuring and impairment charges - Charges recognized (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 27, 2022	Mar. 28, 2021
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 908	$ 7,998
Asset impairment charges	1,497	0
Restructuring and impairment charges	2,405	7,998
Termination benefits
Restructuring Cost and Reserve [Line Items]
Restructuring charges	726	7,202
Asset impairment charges	0
Restructuring and impairment charges	726
Other Restructuring costs
Restructuring Cost and Reserve [Line Items]
Restructuring charges	182	796
Asset impairment charges	1,497
Restructuring and impairment charges	1,679
Respiratory divestiture plan
Restructuring Cost and Reserve [Line Items]
Restructuring charges	120
Respiratory divestiture plan | Termination benefits
Restructuring Cost and Reserve [Line Items]
Restructuring charges	106
Respiratory divestiture plan | Other Restructuring costs
Restructuring Cost and Reserve [Line Items]
Restructuring charges	14
2021 Restructuring plan
Restructuring Cost and Reserve [Line Items]
Restructuring charges		6,760
2021 Restructuring plan | Termination benefits
Restructuring Cost and Reserve [Line Items]
Restructuring charges		6,760
2021 Restructuring plan | Other Restructuring costs
Restructuring Cost and Reserve [Line Items]
Restructuring charges		0
2019 Footprint realignment plan
Restructuring Cost and Reserve [Line Items]
Restructuring charges	(646)	446
2019 Footprint realignment plan | Termination benefits
Restructuring Cost and Reserve [Line Items]
Restructuring charges	(670)	341
2019 Footprint realignment plan | Other Restructuring costs
Restructuring Cost and Reserve [Line Items]
Restructuring charges	24	105
2018 Footprint realignment plan
Restructuring Cost and Reserve [Line Items]
Restructuring charges	220	312
2018 Footprint realignment plan | Termination benefits
Restructuring Cost and Reserve [Line Items]
Restructuring charges	158	267
2018 Footprint realignment plan | Other Restructuring costs
Restructuring Cost and Reserve [Line Items]
Restructuring charges	62	45
Other restructuring programs
Restructuring Cost and Reserve [Line Items]
Restructuring charges	1,214	480
Other restructuring programs | Termination benefits
Restructuring Cost and Reserve [Line Items]
Restructuring charges	1,132	(166)
Other restructuring programs | Other Restructuring costs
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 82	$ 646