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Pension Plans and Postretirement Benefits - Obligations and Funded Status (Detail) - USD ($)
$ in Thousands
 1 Months Ended 3 Months Ended 12 Months Ended
Dec. 31, 2021
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Change in benefit obligation:            
Service cost       $ 11,800 $ 12,400 $ 11,300
Settlements $ (38,300)          
Actuarial loss (gain)   $ 46,600 $ (39,600)      
Change in plan assets:            
Balance at beginning of period       1,310,311    
Company contributions       14,172    
Balance at end of period 1,310,311 921,307 1,310,311 921,307 1,310,311  
Amounts recognized in the balance sheet consist of:            
Accumulated postretirement benefit obligation (24,333) (18,157) (24,333) (18,157) (24,333)  
Pension liability (59,388) (57,832) (59,388) (57,832) (59,388)  
Pension Plan            
Change in benefit obligation:            
Benefit obligation at beginning of period       1,308,266 1,414,055  
Service cost       11,116 11,667 10,650
Interest cost       30,924 27,170 37,199
Plan participants' contributions       224 199  
Amendments       3,100 2,314  
Settlements       (48,777) (38,330)  
Actuarial loss (gain)       (307,946) (45,476)  
Foreign currency exchange rate changes       (6,564) 1,669  
Benefits paid       (63,365) (65,002)  
Benefit obligation at end of period 1,308,266 926,978 1,308,266 926,978 1,308,266 1,414,055
Change in plan assets:            
Balance at beginning of period       1,256,799 1,281,232  
Actual return on plan assets       (263,881) 72,030  
Plan participants' contributions       224 199  
Company contributions         6,164  
Settlements       (61,416) (39,439)  
Foreign currency exchange rate changes       (6,842) 1,615  
Benefits paid       (63,365) (65,002)  
Balance at end of period 1,256,799 875,691 1,256,799 875,691 1,256,799 1,281,232
Funded status (51,467) (51,287) (51,467) (51,287) (51,467)  
Amounts recognized in the balance sheet consist of:            
Prepaid postretirement benefit obligation 0 0 0 0 0  
Prepaid pension 10,573 9,542 10,573 9,542 10,573  
Accrued employee benefits (3,125) (2,997) (3,125) (2,997) (3,125)  
Accumulated postretirement benefit obligation 0 0 0 0 0  
Pension liability (58,915) (57,832) (58,915) (57,832) (58,915)  
Accrued benefit liability, net (51,467) (51,287) (51,467) (51,287) (51,467)  
Amount recognized in accumulated comprehensive income (before taxes):            
Prior service cost (credit) 20,536 20,363 20,536 20,363 20,536  
Plans with accumulated benefit obligation in excess of plan assets:            
Projected benefit obligation 1,172,881 877,431 1,172,881 877,431 1,172,881  
Accumulated benefit obligation 1,166,855 873,185 1,166,855 873,185 1,166,855  
Fair value of plan assets 1,110,841 816,693 1,110,841 816,693 1,110,841  
Plans with plan assets in excess of accumulated benefit obligation:            
Projected benefit obligation 135,385 49,547 135,385 49,547 135,385  
Accumulated benefit obligation 135,375 49,547 135,375 49,547 135,375  
Fair value of plan assets 145,958 58,999 145,958 58,999 145,958  
Other Benefits            
Change in benefit obligation:            
Benefit obligation at beginning of period       59,301 61,086  
Service cost       650 760 642
Interest cost       1,387 1,197 1,612
Plan participants' contributions       346 488  
Amendments       261 3,402  
Settlements       0 0  
Actuarial loss (gain)       (14,747) (4,944)  
Foreign currency exchange rate changes       (921) 197  
Benefits paid       (3,227) (2,885)  
Benefit obligation at end of period 59,301 43,050 59,301 43,050 59,301 61,086
Change in plan assets:            
Balance at beginning of period       53,512 52,077  
Actual return on plan assets       (6,003) 2,898  
Plan participants' contributions       346 488  
Company contributions       1,032 1,008  
Settlements       0 0  
Foreign currency exchange rate changes       0 0  
Benefits paid       (3,271) (2,959)  
Balance at end of period 53,512 45,616 53,512 45,616 53,512 $ 52,077
Funded status (5,789) 2,566 (5,789) 2,566 (5,789)  
Amounts recognized in the balance sheet consist of:            
Prepaid postretirement benefit obligation 20,122 22,232 20,122 22,232 20,122  
Prepaid pension 0 0 0 0 0  
Accrued employee benefits (1,578) (1,509) (1,578) (1,509) (1,578)  
Accumulated postretirement benefit obligation (24,333) (18,157) (24,333) (18,157) (24,333)  
Pension liability 0 0 0 0 0  
Accrued benefit liability, net (5,789) 2,566 (5,789) 2,566 (5,789)  
Amount recognized in accumulated comprehensive income (before taxes):            
Prior service cost (credit) 2,520 2,750 2,520 2,750 2,520  
Plans with accumulated benefit obligation in excess of plan assets:            
Accumulated benefit obligation 23,503 17,795 23,503 17,795 23,503  
Fair value of plan assets 0 0 0 0 0  
Plans with plan assets in excess of accumulated benefit obligation:            
Accumulated benefit obligation 35,798 25,255 35,798 25,255 35,798  
Fair value of plan assets $ 53,512 $ 45,616 $ 53,512 $ 45,616 $ 53,512