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Retirement Plans and Other Postretirement Benefits - Fair Value of Plan Assets (Detail) - USD ($)
$ in Thousands
Dec. 31, 2021
Dec. 31, 2020
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets $ 967,915 $ 913,034
U.S. Defined Benefit Pension Plans    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets 701,627 662,298
U.S. Defined Benefit Pension Plans | Municipal bonds    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets 676 876
U.S. Defined Benefit Pension Plans | Corporate debt instruments    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets 4,053 3,442
U.S. Defined Benefit Pension Plans | Corporate debt instruments – Preferred    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets 11,265 12,196
U.S. Defined Benefit Pension Plans | Corporate stocks – Common    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets 67,975 62,897
U.S. Defined Benefit Pension Plans | U.S. Government securities    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets 663 526
U.S. Defined Benefit Pension Plans | Total investments    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets 235,167 316,467
U.S. Defined Benefit Pension Plans | Investments measured at net asset value    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets 466,460 345,831
U.S. Defined Benefit Pension Plans | Registered investment companies    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets 150,535 236,530
Level 1 | U.S. Defined Benefit Pension Plans    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets 218,510 299,427
Level 1 | U.S. Defined Benefit Pension Plans | Corporate stocks – Common    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets 67,975 62,897
Level 1 | U.S. Defined Benefit Pension Plans | U.S. Government securities    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets 0  
Level 1 | U.S. Defined Benefit Pension Plans | Total investments    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets 218,510 299,427
Level 1 | U.S. Defined Benefit Pension Plans | Registered investment companies    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets 150,535 236,530
Level 2 | U.S. Defined Benefit Pension Plans    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets 16,657 17,040
Level 2 | U.S. Defined Benefit Pension Plans | Municipal bonds    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets 676 876
Level 2 | U.S. Defined Benefit Pension Plans | Corporate debt instruments    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets 4,053 3,442
Level 2 | U.S. Defined Benefit Pension Plans | Corporate debt instruments – Preferred    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets 11,265 12,196
Level 2 | U.S. Defined Benefit Pension Plans | U.S. Government securities    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets 663 526
Level 2 | U.S. Defined Benefit Pension Plans | Total investments    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets 16,657 $ 17,040
Level 2 | U.S. Defined Benefit Pension Plans | Registered investment companies    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets $ 0