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Employee Benefits (Tables)
 3 Months Ended
Mar. 31, 2024
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 162 of our 2023 Form 10-K.
 Three months ended March 31,
Dollars in millions20242023
Interest cost on PBO$10 $11 
Expected return on plan assets(10)(11)
Amortization of losses3 3 
Settlement loss— — 
Net pension cost$3 $3