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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)