XML 46 R35.htm IDEA: XBRL DOCUMENT v3.24.3
Pension and Other Postretirement Benefits (Tables)
 9 Months Ended
Sep. 30, 2024
Retirement Benefits [Abstract]  
Schedule of Net Benefit Costs
The following tables provide certain information regarding the Company's pension, postretirement and supplemental retirement plans for the periods presented:
Defined Benefit Pension PlansPostretirement Benefit
Plans		Supplemental Retirement Plans
Three Months Ended September 30,Three Months Ended September 30,Three Months Ended September 30,
(Dollars in millions)202420232024202320242023
Interest cost$1 $2 $— $— $— $1 
Expected return on plan assets
(1)(2)— — — — 
Settlement expense
1 — — — — — 
Net periodic benefit cost $1 $— $— $— $— $1 
Defined Benefit Pension PlansPostretirement Benefit
Plans		Supplemental Retirement Plans
Nine Months Ended September 30,Nine Months Ended September 30,Nine Months Ended September 30,
(Dollars in millions)202420232024202320242023
Interest cost$5 $6 $— $— $1 $1 
Expected return on plan assets
(4)(5)— — — — 
Amortization of net actuarial gain
— 1 — — — — 
Settlement expense
1 — — — — — 
Net periodic benefit cost $2 $2 $— $— $1 $1