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Income And Other Taxes (Deferred Income Taxes Assets And Liabilities) (Details) - USD ($) $ in Millions | Dec. 31, 2024 | Dec. 31, 2023
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Income And Other Taxes [Abstract] |  |
Property, plant and equipment | $ 40,881 | $ 26,627
Other liabilities | 8,113 | 7,534
Total deferred tax liabilities | 48,994 | 34,161
Pension and other postretirement benefits | (1,365) | (1,777)
Asset retirement obligations | (3,156) | (3,532)
Tax loss carryforwards | (4,575) | (4,317)
Other assets | (7,308) | (6,361)
Total deferred tax assets | (16,404) | (15,987)
Asset valuation allowances | 2,516 | 2,641
Net deferred tax liabilities | $ 35,106 | $ 20,815

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