XML 132 R112.htm IDEA: XBRL DOCUMENT v3.25.0.1
Employee Benefit Plans and Other Postretirement Benefits - Components of Net Periodic Benefit Costs (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Pension and SERPA Benefits      
Defined Benefit Plan Disclosure      
Service cost $ 4,698 $ 5,174 $ 19,052
Interest cost 80,478 81,911 61,890
Expected return on plan assets (132,574) (146,076) (125,904)
Prior service credit 751 751 (1,312)
Net loss (650) (722) 31,912
Settlement (gain) loss 1,722 (759) (1,471)
Net periodic benefit cost (45,575) (59,721) (15,833)
Postretirement Healthcare Benefits      
Defined Benefit Plan Disclosure      
Service cost 2,892 3,184 4,642
Interest cost 10,775 11,089 7,617
Expected return on plan assets (17,696) (17,124) (15,237)
Prior service credit 595 (665) (2,323)
Net loss (4,999) (4,388) 488
Settlement (gain) loss 0 0 (1,244)
Net periodic benefit cost $ (8,433) $ (7,904) $ (6,057)