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Employee Benefit Plans
 6 Months Ended
Jun. 30, 2025
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 and six months ended June 30, 2025 and 2024 were as follows (dollars in millions):
 Pension BenefitsOther Benefits
 Three months ended June 30,Three months ended June 30,
 2025202420252024
Service cost$3 $4 $1 $1 
Interest cost3 2 1 — 
Expected return on plan assets(3)(3)— — 
Amortization of prior service cost (credit)— — (1)(1)
Amortization of prior actuarial losses— — — — 
Settlements1 — — — 
Net periodic benefit cost$4 $3 $1 $— 
 Pension BenefitsOther Benefits
 Six months ended June 30,Six months ended June 30,
 2025202420252024
Service cost$7 $7 $1 $1 
Interest cost6 5 2 1 
Expected return on plan assets(7)(6)— — 
Amortization of prior service cost (credit)— — (1)(1)
Amortization of prior actuarial losses— 1 — — 
Settlements1 — — — 
Net periodic benefit cost$7 $7 $2 $1