Segment information (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 26, 2021	Sep. 27, 2020	Sep. 26, 2021	Sep. 27, 2020
Revenues from External Customers and Long-Lived Assets [Line Items]
Net revenues	$ 700,251	$ 628,301	$ 2,047,649	$ 1,825,977
Operating profit	240,975	132,092	473,029	327,988
Operating Segments
Revenues from External Customers and Long-Lived Assets [Line Items]
Operating profit	173,937	157,842	475,142	432,892
Unallocated expenses
Revenues from External Customers and Long-Lived Assets [Line Items]
Operating profit	67,038	(25,750)	(2,113)	(104,904)
Americas
Revenues from External Customers and Long-Lived Assets [Line Items]
Net revenues	417,330	375,040	1,207,608	1,045,532
Americas | Operating Segments
Revenues from External Customers and Long-Lived Assets [Line Items]
Operating profit	112,476	121,760	301,457	310,267
EMEA
Revenues from External Customers and Long-Lived Assets [Line Items]
Net revenues	143,882	135,649	442,264	423,416
EMEA | Operating Segments
Revenues from External Customers and Long-Lived Assets [Line Items]
Operating profit	19,566	17,702	65,862	53,044
Asia
Revenues from External Customers and Long-Lived Assets [Line Items]
Net revenues	74,956	68,213	219,249	188,411
Asia | Operating Segments
Revenues from External Customers and Long-Lived Assets [Line Items]
Operating profit	27,536	10,099	65,640	33,957
OEM
Revenues from External Customers and Long-Lived Assets [Line Items]
Net revenues	64,083	49,399	178,528	168,618
OEM | Operating Segments
Revenues from External Customers and Long-Lived Assets [Line Items]
Operating profit	$ 14,359	$ 8,281	$ 42,183	$ 35,624