v3.25.1
Shareholders' equity - Change in accumulated other comprehensive income, net of tax (Details) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 30, 2025
Mar. 31, 2024
Increase (Decrease) in Stockholders' Equity [Roll Forward]    
Beginning balance $ 4,278,140 $ 4,440,988
Other comprehensive (loss) income before reclassifications 21,566 (25,486)
Amounts reclassified from accumulated other comprehensive income 2,024 78,837
Net current-period other comprehensive (loss) income 23,590 53,351
Ending balance 4,095,164 4,503,210
Cash Flow Hedges    
Increase (Decrease) in Stockholders' Equity [Roll Forward]    
Beginning balance 1,839 1,396
Other comprehensive (loss) income before reclassifications (3,800) 2,457
Amounts reclassified from accumulated other comprehensive income 1,704 (1,779)
Net current-period other comprehensive (loss) income (2,096) 678
Ending balance (257) 2,074
Pension and Other Postretirement Benefit Plans    
Increase (Decrease) in Stockholders' Equity [Roll Forward]    
Beginning balance 1,838 (88,049)
Other comprehensive (loss) income before reclassifications (923) 8,726
Amounts reclassified from accumulated other comprehensive income 320 80,616
Net current-period other comprehensive (loss) income (603) 89,342
Ending balance 1,235 1,293
Foreign Currency Translation Adjustment    
Increase (Decrease) in Stockholders' Equity [Roll Forward]    
Beginning balance (320,346) (227,752)
Other comprehensive (loss) income before reclassifications 26,289 (36,669)
Amounts reclassified from accumulated other comprehensive income 0 0
Net current-period other comprehensive (loss) income 26,289 (36,669)
Ending balance (294,057) (264,421)
Accumulated Other Comprehensive (Loss) Income    
Increase (Decrease) in Stockholders' Equity [Roll Forward]    
Beginning balance (316,669) (314,405)
Ending balance $ (293,079) $ (261,054)