Financial instruments - Fair values of derivative instruments designated as hedging instruments (Details) - Cash flow hedging - USD ($) $ in Thousands	Mar. 27, 2022	Dec. 31, 2021
Derivatives Fair Value [Line Items]
Total asset derivatives	$ 44,687	$ 33,291
Total liability derivatives	2,818	1,140
Other assets
Derivatives Fair Value [Line Items]
Total asset derivatives	14,448	9,560
Foreign exchange contract | Prepaid expenses and other current assets
Derivatives Fair Value [Line Items]
Total asset derivatives	30,239	23,731
Foreign exchange contract | Other current liabilities
Derivatives Fair Value [Line Items]
Total liability derivatives	2,818	1,140
Foreign exchange contract | Designated as Hedging Instrument | Prepaid expenses and other current assets
Derivatives Fair Value [Line Items]
Total asset derivatives	3,500	1,957
Foreign exchange contract | Designated as Hedging Instrument | Other current liabilities
Derivatives Fair Value [Line Items]
Total liability derivatives	2,708	993
Foreign exchange contract | Not Designated as Hedging Instrument | Prepaid expenses and other current assets
Derivatives Fair Value [Line Items]
Total asset derivatives	86	56
Foreign exchange contract | Not Designated as Hedging Instrument | Other current liabilities
Derivatives Fair Value [Line Items]
Total liability derivatives	110	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	26,653	21,718
Cross-currency interest rate swaps | Not Designated as Hedging Instrument | Other assets
Derivatives Fair Value [Line Items]
Total asset derivatives	$ 14,448	$ 9,560