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Employee Benefits (Tables)
 9 Months Ended
Sep. 30, 2025
Retirement Benefits [Abstract]  
Schedule Of Net Pension Cost (Benefit) for All Funded and Unfunded 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 164 of our 2024 Form 10-K.
 Three months ended September 30,Nine months ended September 30,
Dollars in millions2025202420252024
Interest cost on PBO$11 $10 $33 $30 
Expected return on plan assets(11)(10)(33)(29)
Amortization of losses2 3 6 8 
Settlement loss— — — — 
Net pension cost$2 $3 $6 $9