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Employee Benefit Plans
 3 Months Ended
Mar. 31, 2024
Retirement Benefits [Abstract]  
Employee Benefit Plans EMPLOYEE BENEFIT PLANS
The components of net periodic benefit cost, included in other operating expenses on the Company’s condensed consolidated statements of income, for the three months ended March 31, 2024 and 2023 were as follows (dollars in millions):
 Pension BenefitsOther Benefits
 Three months ended March 31,Three months ended March 31,
 2024202320242023
Service cost$3 $3 $— $— 
Interest cost3 2 1 1 
Expected return on plan assets(3)(3)— — 
Amortization of prior service cost (credit)— — — — 
Amortization of prior actuarial losses1 1 — — 
Net periodic benefit cost$4 $3 $1 $1