v3.26.3
Benefit Plans (Tables)
 9 Months Ended
Sep. 30, 2026
Retirement Benefits [Abstract]  
Schedule of Net Periodic (Benefit) Cost Components
The following tables present the components of net periodic (benefit) cost for the defined benefit plans:

Pension Benefits
Three Months EndedNine Months Ended
September 30,September 30,
2026202520262025
(In millions)
Service cost$1 $1 
Interest cost$9 $12 31 34 
Expected return on plan assets(15)(16)(46)(46)
Amortization of unrecognized net loss2 2 5 6 
Settlements1 
Regulatory asset decrease1 1 
Net periodic benefit$(3)$(2)$(8)$(4)

Other Postretirement Benefits
Three Months EndedNine Months Ended
September 30,September 30,
2026202520262025
(In millions)
Interest cost$1 $1 
Expected return on plan assets$(1)(2)(2)
Amortization of unrecognized prior service cost1 
Net periodic benefit$— $(1)$— $(1)