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Discontinued Operations (Amounts Reported as Discontinued Operations in the Consolidated Statements of Comprehensive Earnings) (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items] |  |  |
Oil, gas and NGL sales |  |  | $ 263
Total revenues |  |  | 263
Production expenses |  |  | 214
Asset impairments |  |  | 182
Asset dispositions |  |  | 1
General and administrative expenses |  |  | 3
Financing costs, net |  |  | (3)
Restructuring and transaction costs |  |  | 9
Other expenses |  |  | 9
Total expenses |  |  | 415
Loss from discontinued operations before income taxes |  |  | (152)
Income tax expense (benefit) |  |  | (24)
Loss from discontinued operations, net of tax | $ 0 | $ 0 | $ (128)

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