v3.26.1
Postretirement Benefit Obligations (Tables)
 6 Months Ended
Jun. 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 June 30,Six Months Ended June 30,
2026202520262025
Postretirement benefits service cost (a)
$— $— $1 $1 
Postretirement benefit (gain) loss
Interest cost$17 $17 $33 $34 
Expected return on plan assets(18)(18)(37)(37)
Amortization of:
Postretirement prior service cost (credit)(1)(1)(2)(2)
Postretirement benefit (gain) loss, net (b)
$(2)$(2)$(6)$(5)
Net periodic defined benefit cost (credit)$(2)$(2)$(5)$(4)
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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.