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Charges and Credits - Additional Information (Detail) - USD ($) $ in Millions |  | 3 Months Ended | 12 Months Ended
--- | --- | --- | ---
Apr. 02, 2016 | Dec. 31, 2018 | Jun. 30, 2018 | Dec. 31, 2017 | Jun. 30, 2017 | Dec. 31, 2016 | Jun. 30, 2016 | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Charges And Credits [Line Items] |  |  |  |  |  |  |  |  |  |
Gain on sale of business |  |  |  |  |  |  |  | $ 215 |  |
Charges and credits |  |  |  |  |  |  |  |  | $ 3,590 | $ 3,237
Charges and credits, pre tax |  |  |  | $ 1,025 | $ 50 |  |  |  | 3,764 | 3,820
Charge relating to one-time mandatory tax on previously deferred foreign earnings |  |  |  | 410 |  |  |  |  | 410 |
Tax credits resulting from remeasurement of net deferred tax liabilities |  |  |  | 334 |  |  |  |  |  |
Promissory note in exchange of accounts receivable |  |  |  |  | $ 700 |  |  |  |  |
Promissory note term |  |  |  |  | 3 years |  |  |  |  |
Promissory note interest rate |  |  |  |  | 6.50% |  |  |  |  |
Debt instrument fair value |  | $ 14,600 |  | 15,200 |  |  |  | 14,600 | 15,200 |
Restructuring and other charges |  |  |  |  |  |  |  | 141 | $ 3,764 | 3,820
US tax reform |  |  |  |  |  |  |  |  |  |
Charges And Credits [Line Items] |  |  |  |  |  |  |  |  |  |
Charges and credits |  |  |  | 76 |  |  |  |  |  |
US tax reform | Tax Year2018 |  |  |  |  |  |  |  |  |  |
Charges And Credits [Line Items] |  |  |  |  |  |  |  |  |  |
Reduced corporate income tax rate |  |  |  |  |  |  |  |  | 21.00% |
Promissory Notes |  |  |  |  |  |  |  |  |  |
Charges And Credits [Line Items] |  |  |  |  |  |  |  |  |  |
Debt instrument fair value |  |  |  | 135 |  |  |  |  | $ 135 |
Venezuela |  |  |  |  |  |  |  |  |  |
Charges And Credits [Line Items] |  |  |  |  |  |  |  |  |  |
Charges and credits, pre tax |  |  |  | 938 |  |  |  |  |  |
Land seismic business |  |  |  |  |  |  |  |  |  |
Charges And Credits [Line Items] |  |  |  |  |  |  |  |  |  |
Impairment charge, Pretax |  |  |  | 90 |  |  |  |  |  |
Impairments and Other |  |  |  |  |  |  |  |  |  |
Charges And Credits [Line Items] |  |  |  |  |  |  |  |  |  |
Charges and credits, pre tax |  |  |  |  |  |  |  |  | 3,211 | 3,172
Promissory Note Fair Value Adjustment and Other |  |  |  |  |  |  |  |  |  |
Charges And Credits [Line Items] |  |  |  |  |  |  |  |  |  |
Charges and credits |  |  |  |  |  |  |  |  | 498 |
Charges and credits, pre tax |  |  |  |  | $ 460 |  |  |  | 510 |
Merger and Integration |  |  |  |  |  |  |  |  |  |
Charges And Credits [Line Items] |  |  |  |  |  |  |  |  |  |
Charges and credits, pre tax | $ 349 |  |  |  |  |  |  |  | 308 | 349
Merger and Integration | Cameron |  |  |  |  |  |  |  |  |  |
Charges And Credits [Line Items] |  |  |  |  |  |  |  |  |  |
Charges and credits, pre tax |  |  |  |  |  |  |  |  | 308 |
Merger and Integration | Cameron | Inventory fair value adjustments |  |  |  |  |  |  |  |  |  |
Charges And Credits [Line Items] |  |  |  |  |  |  |  |  |  |
Charges and credits, pre tax | 299 |  |  |  |  |  |  |  |  |
Cost of Sales |  |  |  |  |  |  |  |  |  |
Charges And Credits [Line Items] |  |  |  |  |  |  |  |  |  |
Charges and credits, pre tax |  |  |  |  |  |  |  |  | 245 | 299
Lease termination facility |  |  |  |  |  |  |  |  |  |
Charges And Credits [Line Items] |  |  |  |  |  |  |  |  |  |
Restructuring charges |  |  |  |  |  | $ 302 |  |  |  |
Marine Seismic Acquisition Business |  |  |  |  |  |  |  |  |  |
Charges And Credits [Line Items] |  |  |  |  |  |  |  |  |  |
Proceeds from divestiture of business |  | 600 |  |  |  |  |  |  |  |
Gain on sale of business |  | $ 215 |  |  |  |  |  |  |  |
Charges and credits |  |  |  |  |  |  |  | (196) |  |
Charges and credits, pre tax |  |  |  |  |  |  |  | $ (215) |  |
Marine Seismic Acquisition Business | Shearwater GeoServices |  |  |  |  |  |  |  |  |  |
Charges And Credits [Line Items] |  |  |  |  |  |  |  |  |  |
Percentage of equity ownership interest |  | 15.00% |  |  |  |  |  | 15.00% |  |
Impairment of Long-Lived Assets | Impairments and Other |  |  |  |  |  |  |  |  |  |
Charges And Credits [Line Items] |  |  |  |  |  |  |  |  |  |
Charges and credits |  | $ 172 |  |  |  |  |  |  |  |
Workforce Reductions |  |  |  |  |  |  |  |  |  |
Charges And Credits [Line Items] |  |  |  |  |  |  |  |  |  |
Charges and credits |  |  |  |  |  |  |  | $ 164 |  |
Charges and credits, pre tax |  |  |  | 247 |  |  |  | $ 184 |  |
Restructuring and other charges |  |  |  |  |  | 234 | $ 646 |  |  |
Workforce Reductions | Impairments and Other |  |  |  |  |  |  |  |  |  |
Charges And Credits [Line Items] |  |  |  |  |  |  |  |  |  |
Charges and credits |  |  | $ 184 |  |  |  |  |  |  |
Vessel write-down |  |  |  |  |  |  |  |  |  |
Charges And Credits [Line Items] |  |  |  |  |  |  |  |  |  |
Charges and credits, pre tax |  |  |  | 786 |  |  |  |  |  |
Impairment of intangible ssets |  |  |  |  |  |  |  |  |  |
Charges And Credits [Line Items] |  |  |  |  |  |  |  |  |  |
Charges and credits, pre tax |  |  |  | 78 |  |  |  |  |  |
Inventory Write Down |  |  |  |  |  |  |  |  |  |
Charges And Credits [Line Items] |  |  |  |  |  |  |  |  |  |
Charges and credits, pre tax |  |  |  | 59 |  |  |  |  |  |
Impairment and other charges |  |  |  |  |  |  | 616 |  |  |
Other restructuring costs |  |  |  |  |  |  |  |  |  |
Charges And Credits [Line Items] |  |  |  |  |  |  |  |  |  |
Charges and credits, pre tax |  |  |  | 102 |  |  |  |  |  |
Impairment and other charges |  |  |  |  |  |  | 55 |  |  |
Multiclient seismic data impairment |  |  |  |  |  |  |  |  |  |
Charges And Credits [Line Items] |  |  |  |  |  |  |  |  |  |
Impairment and other charges |  |  |  | 246 |  |  | 198 |  |  |
Accounts receivable | Venezuela |  |  |  |  |  |  |  |  |  |
Charges And Credits [Line Items] |  |  |  |  |  |  |  |  |  |
Charges and credits, pre tax |  |  |  | 469 |  |  |  |  |  |
Other-than temporary impairment | Promissory Notes |  |  |  |  |  |  |  |  |  |
Charges And Credits [Line Items] |  |  |  |  |  |  |  |  |  |
Charges and credits, pre tax |  |  |  |  | $ 105 |  |  |  |  |
Other-than temporary impairment | Venezuela | Promissory Notes |  |  |  |  |  |  |  |  |  |
Charges And Credits [Line Items] |  |  |  |  |  |  |  |  |  |
Charges and credits, pre tax |  |  |  | 105 |  |  |  |  |  |
Fixed assets | Venezuela |  |  |  |  |  |  |  |  |  |
Charges And Credits [Line Items] |  |  |  |  |  |  |  |  |  |
Charges and credits, pre tax |  |  |  | 285 |  |  |  |  |  |
Other assets | Venezuela |  |  |  |  |  |  |  |  |  |
Charges And Credits [Line Items] |  |  |  |  |  |  |  |  |  |
Charges and credits, pre tax |  |  |  | 79 |  |  |  |  |  |
Loss on long-term construction project |  |  |  |  |  |  |  |  |  |
Charges And Credits [Line Items] |  |  |  |  |  |  |  |  |  |
Charges and credits, pre tax |  |  |  | 245 |  |  |  |  |  |
Loss on long-term construction project | Cost of Sales |  |  |  |  |  |  |  |  |  |
Charges And Credits [Line Items] |  |  |  |  |  |  |  |  |  |
Charges and credits |  |  |  |  |  |  |  |  | 223 |
Charges and credits, pre tax |  |  |  |  |  |  |  |  | $ 245 |
Facility and other exit costs |  |  |  |  |  |  |  |  |  |
Charges And Credits [Line Items] |  |  |  |  |  |  |  |  |  |
Charges and credits, pre tax |  |  |  | $ 156 |  |  |  |  |  |
Facility closure costs | Merger and Integration |  |  |  |  |  |  |  |  |  |
Charges And Credits [Line Items] |  |  |  |  |  |  |  |  |  |
Charges and credits |  |  |  |  |  |  |  |  |  | 48
Charges and credits, pre tax |  |  |  |  |  |  |  |  |  | 61
Facility closure costs | Merger and Integration | Cameron |  |  |  |  |  |  |  |  |  |
Charges And Credits [Line Items] |  |  |  |  |  |  |  |  |  |
Charges and credits, pre tax | 61 |  |  |  |  |  |  |  |  |
Facility closure costs | Lease termination facility |  |  |  |  |  |  |  |  |  |
Charges And Credits [Line Items] |  |  |  |  |  |  |  |  |  |
Restructuring charges |  |  |  |  |  | 165 |  |  |  |
Asset write-offs | Lease termination facility |  |  |  |  |  |  |  |  |  |
Charges And Credits [Line Items] |  |  |  |  |  |  |  |  |  |
Restructuring charges |  |  |  |  |  | 98 |  |  |  |
Contract termination costs | Lease termination facility |  |  |  |  |  |  |  |  |  |
Charges And Credits [Line Items] |  |  |  |  |  |  |  |  |  |
Restructuring charges |  |  |  |  |  | 39 |  |  |  |
Currency Devaluation Loss In Egypt |  |  |  |  |  |  |  |  |  |
Charges And Credits [Line Items] |  |  |  |  |  |  |  |  |  |
Restructuring and other charges |  |  |  |  |  | $ 63 |  |  |  | 63
North America pressure pumping asset impairments |  |  |  |  |  |  |  |  |  |
Charges And Credits [Line Items] |  |  |  |  |  |  |  |  |  |
Impairment and other charges |  |  |  |  |  |  | 209 |  |  |
Facilities impairments | North America |  |  |  |  |  |  |  |  |  |
Charges And Credits [Line Items] |  |  |  |  |  |  |  |  |  |
Impairment and other charges |  |  |  |  |  |  | 165 |  |  |
Other fixed asset impairments |  |  |  |  |  |  |  |  |  |
Charges And Credits [Line Items] |  |  |  |  |  |  |  |  |  |
Impairment and other charges |  |  |  |  |  |  | $ 684 |  |  |
Merger-related employee benefits | Merger and Integration |  |  |  |  |  |  |  |  |  |
Charges And Credits [Line Items] |  |  |  |  |  |  |  |  |  |
Charges and credits |  |  |  |  |  |  |  |  |  | 70
Charges and credits, pre tax |  |  |  |  |  |  |  |  |  | 83
Merger-related employee benefits | Merger and Integration | Cameron |  |  |  |  |  |  |  |  |  |
Charges And Credits [Line Items] |  |  |  |  |  |  |  |  |  |
Charges and credits, pre tax | 83 |  |  |  |  |  |  |  |  |
Professional fees | Merger and Integration |  |  |  |  |  |  |  |  |  |
Charges And Credits [Line Items] |  |  |  |  |  |  |  |  |  |
Charges and credits |  |  |  |  |  |  |  |  |  | 35
Charges and credits, pre tax |  |  |  |  |  |  |  |  |  | 45
Professional fees | Merger and Integration | Cameron |  |  |  |  |  |  |  |  |  |
Charges And Credits [Line Items] |  |  |  |  |  |  |  |  |  |
Charges and credits, pre tax | 45 |  |  |  |  |  |  |  |  |
Other merger and integration-related | Merger and Integration |  |  |  |  |  |  |  |  |  |
Charges And Credits [Line Items] |  |  |  |  |  |  |  |  |  |
Charges and credits |  |  |  |  |  |  |  |  |  | 132
Charges and credits, pre tax |  |  |  |  |  |  |  |  |  | $ 160
Other merger and integration-related | Merger and Integration | Cameron |  |  |  |  |  |  |  |  |  |
Charges And Credits [Line Items] |  |  |  |  |  |  |  |  |  |
Charges and credits, pre tax | $ 160 |  |  |  |  |  |  |  |  |

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