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Investment And Other Income, Net (Narrative) (Details) - USD ($) $ in Millions | 3 Months Ended
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Mar. 31, 2025 | Mar. 31, 2024
Investment And Other Income, Net [Abstract] |  |
Special termination benefit enhancements related to a voluntary separation plan, pension plan | $ (8) | $ 9
Investment and other income, net increase (decrease) | (63) | 9
OPEB remeasurement gain (loss) | (8) | 9
Pension remeasurement gain | $ 44 | $ 74

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- Definition Investment And Other Nonoperating Income Expense Net Increase Decrease + References No definition available. + Details
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- Definition OPEB Remeasurement + References No definition available. + Details
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