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Retirement Plans and Other Postretirement Benefits - Net Projected Benefit Obligation and Fair Value of Plan Assets for Funded and Unfunded Defined Benefit Plans (Detail) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Change in projected benefit obligation:      
Net projected benefit obligation at the beginning of the year $ 581,730    
Service cost 2,800 $ 2,820 $ 4,919
Interest cost 28,085 30,209 20,124
Net projected benefit obligation at the end of the year 537,111 581,730  
Change in plan assets:      
Fair value of plan assets at the beginning of the year 774,329    
Fair value of plan assets at the end of the year 783,203 774,329  
U.S. Defined Benefit Pension Plans      
Change in plan assets:      
Fair value of plan assets at the beginning of the year 599,886    
Fair value of plan assets at the end of the year 617,436 599,886  
U.S. Defined Benefit Pension Plans | Pension Plan      
Change in projected benefit obligation:      
Net projected benefit obligation at the beginning of the year 366,248 383,143  
Service cost 1,177 1,205  
Interest cost 18,998 20,840  
Actuarial (gains) losses (10,115) 10,229  
Gross benefits paid (30,000) (49,169)  
Net projected benefit obligation at the end of the year 346,308 366,248 383,143
Change in plan assets:      
Fair value of plan assets at the beginning of the year 599,886 569,049  
Actual return on plan assets 46,900 79,366  
Employer contributions 650 640  
Gross benefits paid (30,000) (49,169)  
Fair value of plan assets at the end of the year 617,436 599,886 569,049
Foreign Defined Benefit Pension Plans      
Change in plan assets:      
Fair value of plan assets at the beginning of the year 174,443    
Fair value of plan assets at the end of the year 165,767 174,443  
Foreign Defined Benefit Pension Plans | Pension Plan      
Change in projected benefit obligation:      
Net projected benefit obligation at the beginning of the year 215,482 198,744  
Service cost 1,623 1,615  
Interest cost 9,087 9,369  
Foreign currency translation adjustments (5,162) 10,312  
Actuarial (gains) losses (18,872) 7,575  
Expenses paid from assets (579) (552)  
Gross benefits paid (10,776) (11,581)  
Net projected benefit obligation at the end of the year 190,803 215,482 198,744
Change in plan assets:      
Fair value of plan assets at the beginning of the year 174,443 159,592  
Actual return on plan assets (2,327) 10,132  
Employer contributions 8,044 8,031  
Foreign currency translation adjustments (3,038) 8,821  
Expenses paid from assets (579) (552)  
Gross benefits paid (10,776) (11,581)  
Fair value of plan assets at the end of the year $ 165,767 $ 174,443 $ 159,592