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Long-Lived Asset Impairments (Tables)
12 Months Ended
Dec. 31, 2021
Property, Plant and Equipment [Abstract]  
Details of Impairment of Long-Lived Assets Held and Used by Asset
Long-Lived Assets Impairment by Asset Class and Segment
(Dollars in millions)Drilling and EvaluationWell Construction and CompletionsProduction and InterventionAll OtherTotal
Property, Plant and Equipment$195 $126 $232 $18 $571 
Intangible Assets76 39 40 — 155 
Right of Use Assets14 20 54 — 88 
Long-lived Assets Impairment$285 $185 $326 $18 $814