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Retirement Benefits (Schedule Of Expected Payments From Qualified Trust And Company Funds) (Details)
$ in Millions
Dec. 31, 2024
USD ($)
Pension Benefits | Paid from Qualified Trust Funds  
Defined Benefit Plan Disclosure [Line Items]  
2025 $ 284
2026 289
2027 292
2028 295
2029 297
2030 – 2034 1,504
Pension Benefits | Paid from Company Funds  
Defined Benefit Plan Disclosure [Line Items]  
2025 2
2026 2
2027 2
2028 2
2029 2
2030 – 2034 13
Postretirement Benefits | Paid from Qualified Trust Funds  
Defined Benefit Plan Disclosure [Line Items]  
2025 56
2026 57
2027 57
2028 57
2029 57
2030 – 2034 284
Postretirement Benefits | Paid from Company Funds  
Defined Benefit Plan Disclosure [Line Items]  
2025 3
2026 3
2027 4
2028 4
2029 4
2030 – 2034 $ 18