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Retirement Benefits (Schedule Of Expected Payments From Qualified Trust And Company Funds) (Details)
$ in Millions
Dec. 31, 2022
USD ($)
Pension Benefits | Paid From Qualified Trust  
Defined Benefit Plan Disclosure [Line Items]  
2023 $ 273
2024 278
2025 282
2026 286
2027 290
2028 – 2032 1,473
Pension Benefits | Paid From Company Funds  
Defined Benefit Plan Disclosure [Line Items]  
2023 3
2024 3
2025 3
2026 3
2027 3
2028 – 2032 13
Postretirement Benefits | Paid From Qualified Trust  
Defined Benefit Plan Disclosure [Line Items]  
2023 58
2024 60
2025 60
2026 60
2027 60
2028 – 2032 294
Postretirement Benefits | Paid From Company Funds  
Defined Benefit Plan Disclosure [Line Items]  
2023 2
2024 2
2025 2
2026 2
2027 2
2028 – 2032 $ 11