XML 89 R75.htm IDEA: XBRL DOCUMENT v3.22.0.1
Pension Plans and Postretirement Benefits - Components of Net Periodic Benefit Cost (Detail) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Defined Benefit Plan Disclosure [Line Items]      
Service cost $ 12,400 $ 11,300 $ 9,700
Pension Plan      
Defined Benefit Plan Disclosure [Line Items]      
Service cost 11,667 10,650 9,123
Interest cost 27,170 37,199 46,307
Expected return on plan assets (81,778) (77,298) (69,809)
Amortization of prior service cost 3,097 3,370 2,903
Recognized net actuarial loss (gain) (34,690) 6,829 9,353
Net periodic benefit cost (income) (74,534) (19,250) (2,123)
Other Benefits      
Defined Benefit Plan Disclosure [Line Items]      
Service cost 760 642 545
Interest cost 1,197 1,612 2,254
Expected return on plan assets (2,891) (2,691) (2,514)
Amortization of prior service cost (178) (193) (311)
Recognized net actuarial loss (gain) (4,876) (458) (5,723)
Net periodic benefit cost (income) $ (5,988) $ (1,088) $ (5,749)