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Components of Pension and Other Post-employment Benefit (OPEB) Plans Net Periodic Benefit Costs
 9 Months Ended
Sep. 30, 2023
Retirement Benefits [Abstract]  
Components of Pension and Other Post-employment Benefit (OPEB) Plans Net Periodic Benefit Costs COMPONENTS OF PENSION AND OTHER POST-EMPLOYMENT BENEFIT (OPEB) PLANS NET PERIODIC BENEFIT COSTS:
The components of Net Periodic Benefit (Credit) Cost are as follows:
Pension BenefitsOther Post-Employment Benefits
Three Months Ended
September 30,		Nine Months Ended
September 30,		Three Months Ended
September 30,		Nine Months Ended
September 30,
20232022202320222023202220232022
Service Cost$304 $301 $913 $905 $— $— $— $— 
Interest Cost6,756 4,135 20,270 12,404 3,261 1,975 9,783 5,924 
Expected Return on Plan Assets(9,867)(9,319)(29,602)(27,957)— — — — 
Amortization of Prior Service Credits— — — — (601)(601)(1,804)(1,804)
Amortization of Actuarial Loss185 759 555 2,278 — 878 — 2,636 
Net Periodic Benefit (Credit) Cost$(2,622)$(4,124)$(7,864)$(12,370)$2,660 $2,252 $7,979 $6,756 
(Credits) expenses related to pension and other post-employment benefits are reflected in Operating and Other Costs in the Consolidated Statements of Income. Amounts reclassified out of accumulated other comprehensive income are reflected in Operating and Other Costs in the Consolidated Statements of Income.