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Defined Severance Benefits (Tables)
3 Months Ended
Mar. 31, 2025
Retirement Benefits [Abstract]  
Schedule of components of net periodic benefit costs
Net periodic benefit costs consist of the following:
Three Months Ended March 31,
(in millions)
20252024
Current service costs$50 $40 
Interest cost
Amortization of:
Net actuarial loss
Net periodic benefit cost$56 $45