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Pension and Other Postretirement Benefits (Tables)
3 Months Ended
Mar. 31, 2024
Defined Benefit Plans and Other Postretirement Benefit Plans Disclosures [Abstract]  
Components Of Net Periodic Benefit Costs
Net periodic pension cost (benefit) included the following components:
Three Months Ended March 31
Qualified PlansNon-qualified PlansTotal
202420232024202320242023
(In millions)
Service cost$$$— $— $$
Interest cost20 2112123
Expected return on plan assets(31)(30)— $(31)(30)
Amortization of actuarial loss617
Net periodic pension (benefit) cost$— $$$$$