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Shareholders' equity - Change in accumulated other comprehensive income (loss), net of tax (Detail) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Increase (Decrease) in Stockholders' Equity [Roll Forward]    
Beginning Balance $ 3,754,748 $ 3,336,457
Other comprehensive income (loss) before reclassifications (58,331) (56,648)
Amounts reclassified from accumulated other comprehensive income 1,768 6,987
Net current-year other comprehensive income (loss) (56,563) (49,661)
Ending Balance 4,021,968 3,754,748
Cash Flow Hedges    
Increase (Decrease) in Stockholders' Equity [Roll Forward]    
Beginning Balance 1,081 (482)
Other comprehensive income (loss) before reclassifications 7,179 351
Amounts reclassified from accumulated other comprehensive income (3,329) 1,212
Net current-year other comprehensive income (loss) 3,850 1,563
Ending Balance 4,931 1,081
Pension and Other Postretirement Benefit Plans    
Increase (Decrease) in Stockholders' Equity [Roll Forward]    
Beginning Balance (138,290) (150,257)
Other comprehensive income (loss) before reclassifications (2,606) 6,192
Amounts reclassified from accumulated other comprehensive income 5,097 5,775
Net current-year other comprehensive income (loss) 2,491 11,967
Ending Balance (135,799) (138,290)
Foreign Currency Translation Adjustment    
Increase (Decrease) in Stockholders' Equity [Roll Forward]    
Beginning Balance (209,750) (146,559)
Other comprehensive income (loss) before reclassifications (62,904) (63,191)
Amounts reclassified from accumulated other comprehensive income 0 0
Net current-year other comprehensive income (loss) (62,904) (63,191)
Ending Balance (272,654) (209,750)
Accumulated Other Comprehensive Loss (income)    
Increase (Decrease) in Stockholders' Equity [Roll Forward]    
Beginning Balance (346,959) (297,298)
Ending Balance $ (403,522) $ (346,959)