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Charges and Credits - Summary of Charges and Credits (Detail) - USD ($) | 3 Months Ended | 6 Months Ended | 9 Months Ended
--- | --- | --- | ---
Sep. 30, 2018 | Mar. 31, 2018 | Jun. 30, 2019 | Sep. 30, 2019
Charges And Credits [Line Items] |  |  |  |
Charges and credits, Pretax |  |  |  | $ 12,692,000,000
Charges and credits, Tax |  |  |  | (713,000,000)
Charges and credits, Net | $ 0 | $ 0 | $ 0 | 11,979,000,000
Goodwill | Impairment and Other [Member] |  |  |  |
Charges And Credits [Line Items] |  |  |  |
Charges and credits, Pretax |  |  |  | 8,828,000,000
Charges and credits, Tax |  |  |  | (43,000,000)
Charges and credits, Net |  |  |  | 8,785,000,000
Intangible Assets | Impairment and Other [Member] |  |  |  |
Charges And Credits [Line Items] |  |  |  |
Charges and credits, Pretax |  |  |  | 1,085,000,000
Charges and credits, Tax |  |  |  | (248,000,000)
Charges and credits, Net |  |  |  | 837,000,000
North America pressure pumping asset impairments | Impairment and Other [Member] |  |  |  |
Charges And Credits [Line Items] |  |  |  |
Charges and credits, Pretax |  |  |  | 1,575,000,000
Charges and credits, Tax |  |  |  | (344,000,000)
Charges and credits, Net |  |  |  | 1,231,000,000
Other North America - Related | Impairment and Other [Member] |  |  |  |
Charges And Credits [Line Items] |  |  |  |
Charges and credits, Pretax |  |  |  | 310,000,000
Charges and credits, Tax |  |  |  | (53,000,000)
Charges and credits, Net |  |  |  | 257,000,000
Argentina | Impairment and Other [Member] |  |  |  |
Charges And Credits [Line Items] |  |  |  |
Charges and credits, Pretax |  |  |  | 127,000,000
Charges and credits, Net |  |  |  | 127,000,000
Equity Method Investment, Other Than Temporary Impairment | Impairment and Other [Member] |  |  |  |
Charges And Credits [Line Items] |  |  |  |
Charges and credits, Pretax |  |  |  | 231,000,000
Charges and credits, Tax |  |  |  | (12,000,000)
Charges and credits, Net |  |  |  | 219,000,000
Schlumberger Production Managemen | Impairment and Other [Member] |  |  |  |
Charges And Credits [Line Items] |  |  |  |
Charges and credits, Pretax |  |  |  | 294,000,000
Charges and credits, Net |  |  |  | 294,000,000
Other | Impairment and Other [Member] |  |  |  |
Charges And Credits [Line Items] |  |  |  |
Charges and credits, Pretax |  |  |  | 242,000,000
Charges and credits, Tax |  |  |  | (13,000,000)
Charges and credits, Net |  |  |  | $ 229,000,000

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