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Segment Information - Summary of North America and International Revenue Disaggregated by Segment (Detail) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Segment Reporting Information [Line Items] |  |  |
Revenue | $ 32,815 | $ 30,440 | $ 27,810
Operating Segments |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenue | 32,815 | 30,440 | 27,810
Eliminations & other |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenue | 385 | 511 | 278
North America | Operating Segments |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenue | 11,984 | 9,487 | 6,665
International | Operating Segments |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenue | 20,446 |  |
Reservoir Characterization |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenue | 6,526 |  |
Reservoir Characterization | Operating Segments |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenue | 6,526 | 6,795 | 6,660
Reservoir Characterization | Eliminations & other |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenue | 467 |  |
Reservoir Characterization | North America | Operating Segments |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenue | 992 |  |
Reservoir Characterization | International | Operating Segments |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenue | 5,067 |  |
Drilling |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenue | 9,250 |  |
Drilling | Operating Segments |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenue | 9,250 | 8,392 | 8,561
Drilling | Eliminations & other |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenue | 234 |  |
Drilling | North America | Operating Segments |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenue | 2,332 |  |
Drilling | International | Operating Segments |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenue | 6,684 |  |
Production |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenue | 12,394 |  |
Production | Operating Segments |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenue | 12,394 | 10,630 | 8,792
Production | Eliminations & other |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenue | 5 |  |
Production | North America | Operating Segments |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenue | 6,312 |  |
Production | International | Operating Segments |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenue | 6,077 |  |
Cameron |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenue | 5,167 |  |
Cameron | Operating Segments |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenue | 5,167 | $ 5,205 | $ 4,211
Cameron | Eliminations & other |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenue | 80 |  |
Cameron | North America | Operating Segments |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenue | 2,316 |  |
Cameron | International | Operating Segments |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenue | 2,771 |  |
Other |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenue | (522) |  |
Other | Eliminations & other |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenue | (401) |  |
Other | North America | Operating Segments |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenue | 32 |  |
Other | International | Operating Segments |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenue | $ (153) |  |

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- Definition Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 4 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=109196051&loc=SL49130543-203045 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=109196051&loc=SL49130539-203045 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=109196051&loc=SL49130545-203045 + Details
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