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Employee Benefits
 9 Months Ended
Sep. 30, 2022
Retirement Benefits [Abstract]  
Employee Benefits
15. Employee Benefits

Pension Plans

The components of net pension cost (benefit) for all funded and unfunded plans are recorded in Other expense and are summarized in the following table. For more information on our Pension Plans and Other Postretirement Benefit Plans, see Note 18 (“Employee Benefits”) beginning on page 161 of our 2021 Form 10-K.
 Three months ended September 30,Nine months ended September 30,
Dollars in millions2022202120222021
Interest cost on PBO$7 $6 $20 $18 
Expected return on plan assets(7)(7)(20)(21)
Amortization of losses4 5 11 14 
Settlement loss— 7 — 7 
Net pension cost$4 $11 $11 $18