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Supplemental Information to Statements Of Cash Flows (Schedule Of Supplemental Information To Statements Of Cash Flows) (Details) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Changes in assets and liabilities, net: |  |  |
Accounts receivable | $ (170) | $ 191 | $ (142)
Other current assets | (46) | 95 | (119)
Other long-term assets | 12 | (36) | 90
Accounts payable and revenues and royalties payable | (32) | (335) | 152
Other current liabilities | 26 | (50) | (97)
Other long-term liabilities | (7) | (9) | (110)
Total | (217) | (144) | (226)
Supplementary cash flow data: |  |  |
Interest paid | 366 | 378 | 370
Income taxes paid | $ 480 | $ 400 | $ 438

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