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Restructuring and impairment charges - Charges recognized (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 29, 2024	Oct. 01, 2023	Sep. 29, 2024	Oct. 01, 2023
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 285	$ 231	$ 8,689	$ 3,960
Asset impairment charges			2,110	0
Restructuring and impairment charges			10,799
Termination Benefits
Restructuring Cost and Reserve [Line Items]
Restructuring charges	254	77	8,543	3,208
Asset impairment charges			0
Restructuring and impairment charges			8,543
Other costs
Restructuring Cost and Reserve [Line Items]
Restructuring charges	31	154	146	752
Asset impairment charges			2,110
Restructuring and impairment charges			2,256
2024 Footprint realignment plan
Restructuring Cost and Reserve [Line Items]
Restructuring charges	1,093		9,665
2024 Footprint realignment plan \| Termination Benefits
Restructuring Cost and Reserve [Line Items]
Restructuring charges	1,066		9,638
2024 Footprint realignment plan \| Other costs
Restructuring Cost and Reserve [Line Items]
Restructuring charges	27		27
2023 Restructuring plan
Restructuring Cost and Reserve [Line Items]
Restructuring charges	(95)	1,296	(832)	1,296
2023 Restructuring plan \| Termination Benefits
Restructuring Cost and Reserve [Line Items]
Restructuring charges	(95)	1,296	(914)	1,296
2023 Restructuring plan \| Other costs
Restructuring Cost and Reserve [Line Items]
Restructuring charges	0	0	82	0
2023 Footprint realignment plan
Restructuring Cost and Reserve [Line Items]
Restructuring charges	301		1,047
2023 Footprint realignment plan \| Termination Benefits
Restructuring Cost and Reserve [Line Items]
Restructuring charges	301		1,044
2023 Footprint realignment plan \| Other costs
Restructuring Cost and Reserve [Line Items]
Restructuring charges	0		3
Other restructuring programs
Restructuring Cost and Reserve [Line Items]
Restructuring charges	(1,014)	(565)	(1,191)	(431)
Other restructuring programs \| Termination Benefits
Restructuring Cost and Reserve [Line Items]
Restructuring charges	(1,018)	(612)	(1,225)	(853)
Other restructuring programs \| Other costs
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 4	47	$ 34	422
2022 Restructuring plan
Restructuring Cost and Reserve [Line Items]
Restructuring charges		346		3,674
2022 Restructuring plan \| Termination Benefits
Restructuring Cost and Reserve [Line Items]
Restructuring charges		244		3,361
2022 Restructuring plan \| Other costs
Restructuring Cost and Reserve [Line Items]
Restructuring charges		102		313
Respiratory divestiture plan
Restructuring Cost and Reserve [Line Items]
Restructuring charges		(846)		(579)
Respiratory divestiture plan \| Termination Benefits
Restructuring Cost and Reserve [Line Items]
Restructuring charges		(851)		(596)
Respiratory divestiture plan \| Other costs
Restructuring Cost and Reserve [Line Items]
Restructuring charges		$ 5		$ 17