v3.26.3
Postretirement Benefit Obligations (Tables)
 9 Months Ended
Sep. 30, 2026
Postemployment Benefits [Abstract]  
Schedule of Net Periodic Benefit Costs
The components of net periodic benefit costs for the periods were:
 Three Months Ended September 30,Nine Months Ended September 30,
2026202520262025
Postretirement benefits service cost (a)
$1 $1 $2 $2 
Postretirement benefit (gain) loss
Interest cost$16 $17 $49 $51 
Expected return on plan assets(19)(19)(56)(56)
Amortization of:
Postretirement prior service cost (credit)(1)(1)(3)(3)
Postretirement benefit (gain) loss, net (b)
$(4)$(3)$(10)$(8)
Net periodic defined benefit cost (credit)$(3)$(2)$(8)$(6)
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(a)Activity presented as “Operation, maintenance and development” on the Consolidated Statements of Operations.
(b)Activity presented as “Other non-operating income (expense), net” on the Consolidated Statements of Operations.