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Benefit Plans (Schedule of Amounts Recognized in Other Comprehensive Income) (Details) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Retirement Benefits [Abstract] |  |  |
Amounts arising during the period | $ 22 | $ 50 | $ (12)
Pension settlement transaction loss | 371 | 0 | 0
Reclassification adjustment relating to prior service credit | 0 | 0 | 0
Reclassification adjustment relating to actuarial loss | 30 | 34 | 30
Total increase (decrease) in Other comprehensive income | $ 423 | $ 84 | $ 18

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