v3.26.3
Employee Retirement Benefits (Tables)
9 Months Ended
Sep. 30, 2026
Retirement Benefits [Abstract]  
Schedule of Defined Benefit Plans Disclosures
The following summarizes the components of net periodic benefit for our qualified and supplemental pension plans:
(Dollars in millions)Three months ended September 30,Nine months ended September 30,
2026202520262025
Service cost$1 $2 $3 $4 
Non-service (benefit) costs:
Interest cost3 3 10 10 
Expected return on plan assets(5)(6)(17)(17)
Amortization of actuarial gain and prior service cost(1)— (3)(2)
 Total non-service benefit (3)(3)(10)(9)
Net periodic benefit$(2)$(1)$(7)$(5)