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Income Taxes (Schedule Of Effective Income Tax Rate Reconciliation) (Details) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Income Tax Disclosure [Abstract] |  |  |
Earnings before income taxes | $ 3,712 | $ 4,623 | $ 7,775
U.S. statutory income tax rate | 21.00% | 21.00% | 21.00%
State income taxes | 2.00% | 1.00% | 1.00%
Income tax credits | (2.00%) | (3.00%) | 0.00%
Other | 0.00% | (1.00%) | 0.00%
Effective income tax rate | 21.00% | 18.00% | 22.00%

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