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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
--- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Changes in assets and liabilities, net: |  |  |
Accounts receivable | $ (142) | $ (526) | $ 231
Other current assets | (119) | 30 | (97)
Other long-term assets | 90 | 12 | (9)
Accounts payable and revenues and royalties payable | 152 | 539 | (109)
Other current liabilities | (97) | (18) | (68)
Other long-term liabilities | (110) | (153) | (43)
Total | 226 | 116 | 95
Supplementary cash flow data - total operations: |  |  |
Interest paid | 370 | 404 | 259
Income taxes paid (refunded) | $ 438 | $ (116) | $ 171

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