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Asset Impairments - Additional Information (Detail) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended |  |  |
--- | --- | --- | --- | --- | ---
Jun. 30, 2019 | Jun. 30, 2019 | May 31, 2019 | Mar. 31, 2019 | Dec. 31, 2018
Indefinite Lived Intangible Assets By Major Class [Line Items] |  |  |  |  |
Goodwill | $ 3,206 | $ 3,206 | $ 6,300 |  | $ 6,264
Identifiable intangible assets | 900 | $ 900 | 400 |  | 3,020
Decrease in trade percentage |  | 14.00% |  |  |
Impairment charge on goodwill |  | $ 3,099 |  |  |
Impairment of intangible assets, indefinite-lived (excluding goodwill) |  | 87 |  |  |
Property, plant and equipment |  |  | 2,600 |  |
Other finite-lived intangible assets |  |  | 2,500 |  |
Impairment of Intangible Assets, Finite-lived | 1,901 |  |  |  |
Impairment of property, plant and equipment | 230 |  |  |  |
Impairment of right-of-use assets | 56 |  |  |  |
Accumulated goodwill impairment | 5,556 | 5,556 |  | $ 2,457 |
Additional goodwill impaired accumulated impairment loss | 4 | 4 |  |  |
Goodwill adjustments |  | 8 |  |  |
Intangibles, net | 900 | 900 | $ 400 |  | 3,020
Impairment of property, plant and equipment and right-of-use assets |  | 287 |  |  |
Rig Technologies [Member] |  |  |  |  |
Indefinite Lived Intangible Assets By Major Class [Line Items] |  |  |  |  |
Goodwill | 1,005 | 1,005 |  |  | 1,212
Impairment charge on goodwill |  | 220 |  |  |
Impairment of property, plant and equipment and right-of-use assets |  | 67 |  |  |
Rig Technologies [Member] | Rig Equipment [Member] |  |  |  |  |
Indefinite Lived Intangible Assets By Major Class [Line Items] |  |  |  |  |
Goodwill | 851 | 851 |  |  |
Rig Technologies [Member] | Marine Construction [Member] |  |  |  |  |
Indefinite Lived Intangible Assets By Major Class [Line Items] |  |  |  |  |
Goodwill | 154 | 154 |  |  |
Wellbore Technologies [Member] |  |  |  |  |
Indefinite Lived Intangible Assets By Major Class [Line Items] |  |  |  |  |
Goodwill | 1,160 | 1,160 |  |  | 3,011
Impairment charge on goodwill |  | 1,866 |  |  |
Impairment of property, plant and equipment and right-of-use assets |  | 73 |  |  |
Wellbore Technologies [Member] | Downhole [Member] |  |  |  |  |
Indefinite Lived Intangible Assets By Major Class [Line Items] |  |  |  |  |
Goodwill | 265 | 265 |  |  |
Wellbore Technologies [Member] | ReedHycalog [Member] |  |  |  |  |
Indefinite Lived Intangible Assets By Major Class [Line Items] |  |  |  |  |
Goodwill | 359 | 359 |  |  |
Wellbore Technologies [Member] | Grant Prideco [Member] |  |  |  |  |
Indefinite Lived Intangible Assets By Major Class [Line Items] |  |  |  |  |
Goodwill | 194 | 194 |  |  |
Wellbore Technologies [Member] | Tuboscope [Member] |  |  |  |  |
Indefinite Lived Intangible Assets By Major Class [Line Items] |  |  |  |  |
Goodwill | 37 | 37 |  |  |
Wellbore Technologies [Member] | WellSite [Member] |  |  |  |  |
Indefinite Lived Intangible Assets By Major Class [Line Items] |  |  |  |  |
Goodwill | 305 | 305 |  |  |
Completion & Production Solutions [Member] |  |  |  |  |
Indefinite Lived Intangible Assets By Major Class [Line Items] |  |  |  |  |
Goodwill | 1,041 | 1,041 |  |  | $ 2,041
Impairment charge on goodwill |  | 1,013 |  |  |
Impairment of property, plant and equipment and right-of-use assets |  | 146 |  |  |
Completion & Production Solutions [Member] | Intervention and Stimulation Equipment [Member] |  |  |  |  |
Indefinite Lived Intangible Assets By Major Class [Line Items] |  |  |  |  |
Goodwill | 7 | 7 |  |  |
Completion & Production Solutions [Member] | Floating Production Systems [Member] |  |  |  |  |
Indefinite Lived Intangible Assets By Major Class [Line Items] |  |  |  |  |
Goodwill | 60 | 60 |  |  |
Completion & Production Solutions [Member] | XL Systems [Member] |  |  |  |  |
Indefinite Lived Intangible Assets By Major Class [Line Items] |  |  |  |  |
Goodwill | 65 | 65 |  |  |
Completion & Production Solutions [Member] | Fiber Glass Systems [Member] |  |  |  |  |
Indefinite Lived Intangible Assets By Major Class [Line Items] |  |  |  |  |
Goodwill | 526 | 526 |  |  |
Completion & Production Solutions [Member] | Process and Flow Technologies [Member] |  |  |  |  |
Indefinite Lived Intangible Assets By Major Class [Line Items] |  |  |  |  |
Goodwill | 353 | 353 |  |  |
Completion & Production Solutions [Member] | Completion Tools [Member] |  |  |  |  |
Indefinite Lived Intangible Assets By Major Class [Line Items] |  |  |  |  |
Goodwill | $ 25 | $ 25 |  |  |

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