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Basis of Presentation (Policies)	9 Months Ended
Basis of Presentation (Policies)	Sep. 30, 2017
Organization Consolidation And Presentation Of Financial Statements [Abstract]
New Accounting Pronouncements	New Accounting Pronouncements In May 2014, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) 2014-09, Revenue from Contracts with Customers. This ASU amends the existing accounting standards for revenue recognition and is based on the principle that revenue should be recognized to depict the transfer of goods or services to a customer at an amount that reflects the consideration a company expects to receive in exchange for those goods or services. Schlumberger will adopt this ASU on January 1, 2018. Schlumberger has concluded that the adoption of this ASU will not have a material impact on its consolidated financial statements. In February 2016, the FASB issued ASU No. 2016-02, Leases. This ASU requires lessees to recognize a right of use asset and lease liability on the balance sheet for all leases, with the exception of short-term leases. Schlumberger will adopt this ASU on January 1, 2019. Based on its current lease portfolio, Schlumberger estimates that the adoption of this ASU will result in approximately $1.3 billion of additional assets and liabilities being reflected on its Consolidated Balance Sheet.