Financial instruments - Fair values of derivative instruments designated as hedging instruments (Details) - Cash flow hedging - USD ($) $ in Thousands	Sep. 25, 2022	Dec. 31, 2021
Derivatives Fair Value [Line Items]
Total asset derivatives	$ 132,238	$ 33,291
Total liability derivatives	1,867	1,140
Other assets
Derivatives Fair Value [Line Items]
Total asset derivatives	97,047	9,560
Foreign exchange contract | Prepaid expenses and other current assets
Derivatives Fair Value [Line Items]
Total asset derivatives	35,191	23,731
Foreign exchange contract | Other current liabilities
Derivatives Fair Value [Line Items]
Total liability derivatives	1,867	1,140
Foreign exchange contract | Designated as hedging instrument | Prepaid expenses and other current assets
Derivatives Fair Value [Line Items]
Total asset derivatives	5,414	1,957
Foreign exchange contract | Designated as hedging instrument | Other current liabilities
Derivatives Fair Value [Line Items]
Total liability derivatives	879	993
Foreign exchange contract | Not designated as hedging instrument | Prepaid expenses and other current assets
Derivatives Fair Value [Line Items]
Total asset derivatives	1,241	56
Foreign exchange contract | Not designated as hedging instrument | Other current liabilities
Derivatives Fair Value [Line Items]
Total liability derivatives	988	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	28,536	21,718
Cross-currency interest rate swaps | Not designated as hedging instrument | Other assets
Derivatives Fair Value [Line Items]
Total asset derivatives	$ 97,047	$ 9,560