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Business Segment and Geographic Information (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2021 | Sep. 30, 2020 | Sep. 30, 2021 | Sep. 30, 2020
Segment Reporting [Abstract] |  |  |  |  |
Impairments and other charges | [1] | $ 12 | $ 133 | $ 12 | $ 3,353
[1] | For the three and nine months ended September 30, 2021, amount includes a $42 million charge attributable to Completions and Production, a $9 million charge attributable to Drilling and Evaluation, and a $39 million net gain attributable to Corporate and other. For the three and nine months ended September 30, 2020, amount includes $90 million and $2.1 billion attributable to Completion and Production, $40 million and $1.2 billion attributable to Drilling and Evaluation, and $3 million and $44 million attributable to Corporate and other, respectively.

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- Definition Amount of restructuring charges, remediation cost, and asset impairment loss. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.3) -URI http://asc.fasb.org/extlink&oid=123367319&loc=SL114868664-224227 + Details
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Balance Type: | debit
Period Type: | duration

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- References No definition available. + Details
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Namespace Prefix: | us-gaap_
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Period Type: | duration