Financial instruments - Fair values of derivative instruments designated as hedging instruments (Details) - Cash flow hedging - USD ($) $ in Thousands	Jun. 26, 2022	Dec. 31, 2021
Derivatives Fair Value [Line Items]
Total asset derivatives	$ 68,607	$ 33,291
Total liability derivatives	1,288	1,140
Other assets
Derivatives Fair Value [Line Items]
Total asset derivatives	43,352	9,560
Foreign exchange contract | Prepaid expenses and other current assets
Derivatives Fair Value [Line Items]
Total asset derivatives	25,255	23,731
Foreign exchange contract | Other current liabilities
Derivatives Fair Value [Line Items]
Total liability derivatives	1,288	1,140
Foreign exchange contract | Designated as Hedging Instrument | Prepaid expenses and other current assets
Derivatives Fair Value [Line Items]
Total asset derivatives	3,189	1,957
Foreign exchange contract | Designated as Hedging Instrument | Other current liabilities
Derivatives Fair Value [Line Items]
Total liability derivatives	988	993
Foreign exchange contract | Not Designated as Hedging Instrument | Prepaid expenses and other current assets
Derivatives Fair Value [Line Items]
Total asset derivatives	32	56
Foreign exchange contract | Not Designated as Hedging Instrument | Other current liabilities
Derivatives Fair Value [Line Items]
Total liability derivatives	300	147
Cross-currency interest rate swaps | Not Designated as Hedging Instrument | Prepaid expenses and other current assets
Derivatives Fair Value [Line Items]
Total asset derivatives	22,034	21,718
Cross-currency interest rate swaps | Not Designated as Hedging Instrument | Other assets
Derivatives Fair Value [Line Items]
Total asset derivatives	$ 43,352	$ 9,560