Financial instruments - Foreign exchange gains and losses recognized within AOCI and the interest benefit recognized within interest expense (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 25, 2022	Sep. 26, 2021	Sep. 25, 2022	Sep. 26, 2021
Derivative Instruments, Gain (Loss) [Line Items]
Foreign exchange gains	$ (55,194)	$ (15,312)	$ (123,576)	$ (33,307)
Interest benefit			15,677	13,882
Cross-currency interest rate swaps | Not designated as hedging instrument
Derivative Instruments, Gain (Loss) [Line Items]
Interest benefit	5,531	4,756	15,677	13,882
Cross-currency interest rate swaps | Cash flow hedging
Derivative Instruments, Gain (Loss) [Line Items]
Foreign exchange gains	$ 42,189	$ 8,873	$ 68,643	$ 19,360