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Investment And Other Income, Net (Components Of Investment And Other Income) (Details) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Investment And Other Income, Net [Abstract] |  |  |
Interest and dividend income | $ 80 | $ 87 | $ 42
Pension benefit | 38 | 19 | 75
OPEB costs | (3) | (9) | (18)
OPEB remeasurement gain (loss) | 35 | (3) | 248
Pension remeasurement (loss) gain | (45) | 202 | 218
All other, net |  | (18) | (11)
Total investment and other income, net | $ 105 | $ 278 | $ 554

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- Definition OPEB Costs (Benefit) + References No definition available. + Details
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