v3.25.2
Employee Benefit Plans (Tables)
 6 Months Ended
Jun. 30, 2025
Defined Benefit Plans and Other Postretirement Benefit Plans Disclosures [Abstract]  
Components of Net Periodic Benefit Cost
The components of net periodic benefit cost (credit) for the Corporation's qualified pension plan, non-qualified pension plan and postretirement benefit plan are as follows.
Qualified Defined Benefit Pension PlanThree Months Ended June 30,Six Months Ended June 30,
(in millions)2025202420252024
Service cost$8 $9 $17 $17 
Other components of net benefit credit:
Interest cost22 21 43 42 
Expected return on plan assets(45)(45)(89)(90)
Amortization of prior service credit(3)(4)(7)(7)
Amortization of net loss 5 5 11 11 
Total other components of net benefit credit(21)(23)(42)(44)
Net periodic defined benefit credit$(13)$(14)$(25)$(27)
Non-Qualified Defined Benefit Pension PlanThree Months Ended June 30,Six Months Ended June 30,
(in millions)2025202420252024
Service cost$1 $— $2 $1 
Other components of net benefit cost:
Interest cost2 2 4 4 
Amortization of prior service credit(1)(1)(2)(3)
Amortization of net loss1 1 2 2 
Total other components of net benefit cost2 2 4 3 
Net periodic defined benefit cost$3 $2 $6 $4 
Postretirement Benefit PlanThree Months Ended June 30,Six Months Ended June 30,
(in millions)2025202420252024
Other components of net benefit credit:
Expected return on plan assets$— $— $(1)$(1)
Net periodic defined benefit credit$— $— $(1)$(1)