Long-term Debt and Debt Facility Agreements - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2017	Dec. 31, 2016
Debt Instrument [Line Items]
Investment in subsidiary-Schlumberger Investment SA	100.00%
Committed credit facility agreement aggregated	$ 6,600
Unused credit facility	3,600
Short-term borrowings and current portion of long-term debt	3,324	$ 3,153
Long-term debt, carrying amount	$ 14,875	16,463
Weighted average interest rate on variable rate debt	2.30%
Long-term Debt maturity in 2019	$ 1,500
Long-term Debt maturity in 2020	2,800
Long-term Debt maturity in 2021	4,300
Long-term Debt maturity in 2022	2,600
Long-term Debt maturity in 2023	1,600
Long-term Debt maturity in 2025	1,700
Long-term Debt maturity thereafter	400
Long-term debt, fair value	15,200	16,800
Commercial paper borrowings
Debt Instrument [Line Items]
Committed credit facility agreement aggregated	6,300
Short-term borrowings and current portion of long-term debt	1,300	200
Long-term debt, carrying amount	1,694	2,421
Long-term debt	3,000	$ 2,600
Long-term debt, fair value	135
Commercial paper programs mature in February 2018
Debt Instrument [Line Items]
Committed credit facility agreement aggregated	1,000
Commercial paper programs mature in July 2018
Debt Instrument [Line Items]
Committed credit facility agreement aggregated	1,800
Commercial paper programs mature in November 2020
Debt Instrument [Line Items]
Committed credit facility agreement aggregated	1,500
Commercial paper programs mature in February 2021
Debt Instrument [Line Items]
Committed credit facility agreement aggregated	$ 2,000

Long term debt maturities repayments of principal in year eight and thereafter.

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Long term debt maturities repayments of principal in year seven.

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Longterm debt maturities repayments of principal in year six.

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Short term borrowings and long term debt current.

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Weighted average interest rate on variable rate debt.

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Fair value portion of debt instrument payable, including, but not limited to, notes payable and loans payable.

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-Publisher FASB
-Name Accounting Standards Codification
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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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