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Business Segments and Geographic Areas - Business Segments (Parenthetical) (Detail) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Segment Reporting Information [Line Items] |  |  |
Operating profit (loss) | $ (6,279) | $ 211 | $ (277)
Goodwill Indefinite Lived And Finite Lived Intangible And Long Lived Tangible Assets | Wellbore Technologies [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Operating profit (loss) | 3,565 |  |
Goodwill Indefinite Lived And Finite Lived Intangible And Long Lived Tangible Assets | Completion & Production Solutions [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Operating profit (loss) | 1,865 |  |
Goodwill Indefinite Lived And Finite Lived Intangible And Long Lived Tangible Assets | Rig Technologies [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Operating profit (loss) | 389 |  |
Inventory Charges | Wellbore Technologies [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Operating profit (loss) | 130 |  | 4
Inventory Charges | Completion & Production Solutions [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Operating profit (loss) | 148 |  | (6)
Inventory Charges | Rig Technologies [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Operating profit (loss) | 355 |  | 110
Voluntary Early Retirement Program | Wellbore Technologies [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Operating profit (loss) | 64 |  |
Voluntary Early Retirement Program | Completion & Production Solutions [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Operating profit (loss) | 30 |  |
Voluntary Early Retirement Program | Rig Technologies [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Operating profit (loss) | $ 37 |  |
Severance, Facility Closures And Other Items | Wellbore Technologies [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Operating profit (loss) |  | 28 |
Non-operational Credits Elimination and Corporate Costs [Member] | Wellbore Technologies [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Operating profit (loss) |  | $ (18) |
Severance And Facility Closures Cost | Wellbore Technologies [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Operating profit (loss) |  |  | 18
Severance And Facility Closures Cost | Completion & Production Solutions [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Operating profit (loss) |  |  | 32
Severance And Facility Closures Cost | Rig Technologies [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Operating profit (loss) |  |  | $ 20

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