Basis of Presentation (Policies)	3 Months Ended
Basis of Presentation (Policies)	Mar. 31, 2016
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Merger with Cameron International Corporation	Merger with Cameron International Corporation On April 1, 2016, Schlumberger acquired all of the outstanding shares of Cameron International Corporation (Cameron), a leading provider of flow equipment products, systems and services to the oil and gas industry worldwide. The merger will create technology-driven growth by integrating Schlumberger’s reservoir and well technologies with Cameron wellhead and surface equipment, flow control and processing technology. The combination of the two complementary technology portfolios provides the industry’s most comprehensive range of products and services, from exploration to production and integrated pore-to-pipeline solutions that optimize hydrocarbon recovery to deliver reservoir performance. Cameron’s revenue for the year ended December 31, 2015 and the three months ended March 31, 2016 was $8.8 billion and $1.6 billion, respectively. Under the terms of the merger agreement, Cameron became a wholly-owned subsidiary of Schlumberger. Each share of Cameron common stock issued and outstanding immediately prior to the effective time of the merger was converted into the right to receive 0.716 share of Schlumberger stock and $14.44 in cash. As a result, Schlumberger issued approximately 138 million shares of its common stock and paid cash of approximately $2.8 billion in connection with this transaction. Based on the closing price of Schlumberger’s common stock on April 1, 2016, the total fair value of the consideration transferred to effect the acquisition of Cameron was approximately $12.9 billion. Due to the fact that the acquisition just recently closed, the initial accounting for the transaction has not yet been completed. Cameron reported net tangible assets of approximately $3.0 billion as of December 31, 2015, consisting of $2.4 billion of cash and short-term investments, $2.0 billion of accounts receivable, $2.4 billion of inventories, $1.7 billion of fixed assets, $2.8 billion of debt and $2.7 billion of other net liabilities. As this transaction closed subsequent to the end of the first quarter of 2016, the Consolidated Financial Statements and the related footnotes do not reflect any amounts relating to the acquired Cameron business.
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 is required to adopt this ASU on January 1, 2018, with early adoption permitted on January 1, 2017, and does not expect the adoption of this ASU to have a material impact on its consolidated financial statements. In November 2015, the FASB issued ASU 2015-17, Balance Sheet Classification of Deferred Taxes, which amends existing guidance on income taxes to require the classification of all deferred tax assets and liabilities as non-current on the balance sheet. Schlumberger is required to adopt this ASU no later than January 1, 2018, with early adoption permitted, and the guidance may be applied either prospectively or retrospectively. Schlumberger does not expect the adoption of this ASU to 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 for all leases, with the exception of short-term leases, a liability equal to the present value of lease payments and a corresponding right-of-use asset also based on the present value of lease payments. Schlumberger is evaluating the impact that the adoption of this ASU will have on its consolidated financial statements.