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Employee Benefits (Tables)
 9 Months Ended
Sep. 30, 2025
Retirement Benefits [Abstract]  
Components of Net Periodic Benefit Cost
The components of net periodic benefit cost for the Company’s pension plans were:
 Three Months Ended
September 30		Nine Months Ended
September 30
(Dollars in Millions)2025202420252024
Service cost$54 $55 $160 $164 
Interest cost102 94 307 282 
Expected return on plan assets(147)(146)(440)(438)
Prior service cost (credit) amortization(1)(1)(3)(3)
Actuarial loss (gain) amortization1 2 3 7 
Net periodic benefit cost(a)
$9 $4 $27 $12 
(a)Service cost is included in compensation and employee benefits expense on the Consolidated Statement of Income. All other components are included in other noninterest expense on the Consolidated Statement of Income.