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Charges and Credits - Summary of Charges and Credits (Detail) - USD ($) $ in Millions |  | 3 Months Ended | 12 Months Ended
--- | --- | --- | ---
Apr. 02, 2016 | Dec. 31, 2017 | Jun. 30, 2017 | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Charges And Credits [Line Items] |  |  |  |  |  |
Charges and credits, Pretax |  | $ 1,025 | $ 50 |  | $ 3,764 | $ 3,820
Charges and credits, Tax |  |  |  |  | 140 | 583
Charges and credits, Noncontolling interests |  |  |  |  | 34 |
Charges and credits, Net |  |  |  |  | 3,590 | 3,237
Gain on sale of marine seismic acquisition business |  |  |  |  |  |
Charges And Credits [Line Items] |  |  |  |  |  |
Charges and credits, Pretax |  |  |  | $ (215) |  |
Charges and credits, Tax |  |  |  | (19) |  |
Charges and credits, Net |  |  |  | (196) |  |
Asset impairments |  |  |  |  |  |
Charges And Credits [Line Items] |  |  |  |  |  |
Charges and credits, Pretax |  |  |  | 172 |  |
Charges and credits, Tax |  |  |  | 16 |  |
Charges and credits, Net |  |  |  | 156 |  |
Workforce reduction |  |  |  |  |  |
Charges And Credits [Line Items] |  |  |  |  |  |
Charges and credits, Pretax |  | 247 |  | 184 |  |
Charges and credits, Tax |  |  |  | 20 |  |
Charges and credits, Net |  |  |  | $ 164 |  |
Other restructuring charges |  |  |  |  |  |
Charges And Credits [Line Items] |  |  |  |  |  |
Charges and credits, Pretax |  | 102 |  |  |  |
Provision for loss on long-term construction project |  |  |  |  |  |
Charges And Credits [Line Items] |  |  |  |  |  |
Charges and credits, Pretax |  | 245 |  |  |  |
Inventory write-downs |  |  |  |  |  |
Charges And Credits [Line Items] |  |  |  |  |  |
Charges and credits, Pretax |  | $ 59 |  |  |  |
Impairment And Other | WesternGeco seismic restructuring charges |  |  |  |  |  |
Charges And Credits [Line Items] |  |  |  |  |  |
Charges and credits, Pretax |  |  |  |  | 1,114 |
Charges and credits, Tax |  |  |  |  | 20 |
Charges and credits, Net |  |  |  |  | 1,094 |
Impairment And Other | Venezuela investment write-down |  |  |  |  |  |
Charges And Credits [Line Items] |  |  |  |  |  |
Charges and credits, Pretax |  |  |  |  | 938 |
Charges and credits, Net |  |  |  |  | 938 |
Impairment And Other | Workforce reduction |  |  |  |  |  |
Charges And Credits [Line Items] |  |  |  |  |  |
Charges and credits, Pretax |  |  |  |  | 247 | 880
Charges and credits, Tax |  |  |  |  | 13 | 69
Charges and credits, Net |  |  |  |  | 234 | 811
Impairment And Other | Multiclient seismic data impairment |  |  |  |  |  |
Charges And Credits [Line Items] |  |  |  |  |  |
Charges and credits, Pretax |  |  |  |  | 246 | 198
Charges and credits, Tax |  |  |  |  | 81 | 62
Charges and credits, Net |  |  |  |  | 165 | 136
Impairment And Other | Other restructuring charges |  |  |  |  |  |
Charges And Credits [Line Items] |  |  |  |  |  |
Charges and credits, Pretax |  |  |  |  | 156 | 55
Charges and credits, Tax |  |  |  |  | 10 |
Charges and credits, Noncontolling interests |  |  |  |  | 22 |
Charges and credits, Net |  |  |  |  | 124 | 55
Impairment And Other | Other fixed asset impairments |  |  |  |  |  |
Charges And Credits [Line Items] |  |  |  |  |  |
Charges and credits, Pretax |  |  |  |  |  | 684
Charges and credits, Tax |  |  |  |  |  | 52
Charges and credits, Net |  |  |  |  |  | 632
Impairment And Other | North America pressure pumping asset impairments |  |  |  |  |  |
Charges And Credits [Line Items] |  |  |  |  |  |
Charges and credits, Pretax |  |  |  |  |  | 209
Charges and credits, Tax |  |  |  |  |  | 67
Charges and credits, Net |  |  |  |  |  | 142
Impairment And Other | Facilities impairments |  |  |  |  |  |
Charges And Credits [Line Items] |  |  |  |  |  |
Charges and credits, Pretax |  |  |  |  |  | 165
Charges and credits, Tax |  |  |  |  |  | 58
Charges and credits, Net |  |  |  |  |  | 107
Impairment And Other | Facility closure costs |  |  |  |  |  |
Charges And Credits [Line Items] |  |  |  |  |  |
Charges and credits, Pretax |  |  |  |  |  | 165
Charges and credits, Tax |  |  |  |  |  | 40
Charges and credits, Net |  |  |  |  |  | 125
Impairment And Other | Costs associated with exiting certain activities |  |  |  |  |  |
Charges And Credits [Line Items] |  |  |  |  |  |
Charges and credits, Pretax |  |  |  |  |  | 98
Charges and credits, Tax |  |  |  |  |  | 23
Charges and credits, Net |  |  |  |  |  | 75
Impairment And Other | Currency Devaluation Loss In Egypt |  |  |  |  |  |
Charges And Credits [Line Items] |  |  |  |  |  |
Charges and credits, Pretax |  |  |  |  |  | 63
Charges and credits, Net |  |  |  |  |  | 63
Impairment And Other | Contract termination costs |  |  |  |  |  |
Charges And Credits [Line Items] |  |  |  |  |  |
Charges and credits, Pretax |  |  |  |  |  | 39
Charges and credits, Tax |  |  |  |  |  | 9
Charges and credits, Net |  |  |  |  |  | 30
Impairment And Other | Inventory write-downs |  |  |  |  |  |
Charges And Credits [Line Items] |  |  |  |  |  |
Charges and credits, Pretax |  |  |  |  |  | 616
Charges and credits, Tax |  |  |  |  |  | 49
Charges and credits, Net |  |  |  |  |  | 567
Promissory Note Fair Value Adjustment and Other |  |  |  |  |  |
Charges And Credits [Line Items] |  |  |  |  |  |
Charges and credits, Pretax |  |  | $ 460 |  | 510 |
Charges and credits, Noncontolling interests |  |  |  |  | 12 |
Charges and credits, Net |  |  |  |  | 498 |
Cost of Sales |  |  |  |  |  |
Charges And Credits [Line Items] |  |  |  |  |  |
Charges and credits, Pretax |  |  |  |  | 245 | 299
Cost of Sales | Amortization of inventory fair value adjustment |  |  |  |  |  |
Charges And Credits [Line Items] |  |  |  |  |  |
Charges and credits, Pretax |  |  |  |  |  | 299
Charges and credits, Tax |  |  |  |  |  | 90
Charges and credits, Net |  |  |  |  |  | 209
Cost of Sales | Provision for loss on long-term construction project |  |  |  |  |  |
Charges And Credits [Line Items] |  |  |  |  |  |
Charges and credits, Pretax |  |  |  |  | 245 |
Charges and credits, Tax |  |  |  |  | 22 |
Charges and credits, Net |  |  |  |  | 223 |
Merger and Integration |  |  |  |  |  |
Charges And Credits [Line Items] |  |  |  |  |  |
Charges and credits, Pretax | $ 349 |  |  |  | 308 | 349
Merger and Integration | Facility closure costs |  |  |  |  |  |
Charges And Credits [Line Items] |  |  |  |  |  |
Charges and credits, Pretax |  |  |  |  |  | 61
Charges and credits, Tax |  |  |  |  |  | 13
Charges and credits, Net |  |  |  |  |  | 48
Merger and Integration | Merger and integration-related costs |  |  |  |  |  |
Charges And Credits [Line Items] |  |  |  |  |  |
Charges and credits, Pretax |  |  |  |  | 308 |
Charges and credits, Tax |  |  |  |  | 70 |
Charges and credits, Net |  |  |  |  | 238 |
Merger and Integration | Other merger and integration-related |  |  |  |  |  |
Charges And Credits [Line Items] |  |  |  |  |  |
Charges and credits, Pretax |  |  |  |  |  | 160
Charges and credits, Tax |  |  |  |  |  | 28
Charges and credits, Net |  |  |  |  |  | 132
Merger and Integration | Merger-related employee benefits |  |  |  |  |  |
Charges And Credits [Line Items] |  |  |  |  |  |
Charges and credits, Pretax |  |  |  |  |  | 83
Charges and credits, Tax |  |  |  |  |  | 13
Charges and credits, Net |  |  |  |  |  | 70
Merger and Integration | Professional fees |  |  |  |  |  |
Charges And Credits [Line Items] |  |  |  |  |  |
Charges and credits, Pretax |  |  |  |  |  | 45
Charges and credits, Tax |  |  |  |  |  | 10
Charges and credits, Net |  |  |  |  |  | $ 35
US tax reform charge |  |  |  |  |  |
Charges And Credits [Line Items] |  |  |  |  |  |
Charges and credits, Tax |  |  |  |  | (76) |
Charges and credits, Net |  |  |  |  | $ 76 |

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- Definition Charges and credits impact of non controlling interest. + References No definition available. + Details
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- Definition Charges and credits. + References No definition available. + Details
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- Definition Charges and credits pretax. + References No definition available. + Details
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- Definition Charges and credits tax. + References No definition available. + Details
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- Details
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