Contingencies	3 Months Ended
Mar. 31, 2015
Commitments And Contingencies Disclosure [Abstract]
Contingencies	12. Contingencies On March 25, 2015, Schlumberger resolved a previously disclosed investigation by the U.S. Department of Justice into past violations of US sanctions regarding its historical operations in Iran and Sudan that occurred between 2004 and 2010. A non-US subsidiary of Schlumberger has agreed to plead guilty to one criminal count of conspiracy to violate the International Emergency Economic Powers Act. Under the terms of the plea agreement, Schlumberger will pay a total amount of approximately $233 million in fines, penalties and assessments. This amount, which has been previously accrued for, is expected to be paid during the second quarter of 2015 and will be reflected within Cash flow used in discontinued operations – operating activities in Schlumberger’s Consolidated Statement of Cash Flows when paid. All terms of the plea agreement are subject to judicial approval. Schlumberger and its subsidiaries are party to various other legal proceedings from time to time. A liability is accrued when a loss is both probable and can be reasonably estimated. Management believes that the probability of a material loss with respect to these other legal proceedings is remote. However, litigation is inherently uncertain and it is not possible to predict the ultimate disposition of any of these proceedings.

Contingencies

3 Months Ended

Mar. 31, 2015

Commitments And Contingencies Disclosure [Abstract]

12. Contingencies

On March 25, 2015, Schlumberger resolved a previously disclosed investigation by the U.S. Department of Justice into past violations of US sanctions regarding its historical operations in Iran and Sudan that occurred between 2004 and 2010. A non-US subsidiary of Schlumberger has agreed to plead guilty to one criminal count of conspiracy to violate the International Emergency Economic Powers Act. Under the terms of the plea agreement, Schlumberger will pay a total amount of approximately $233 million in fines, penalties and assessments. This amount, which has been previously accrued for, is expected to be paid during the second quarter of 2015 and will be reflected within Cash flow used in discontinued operations – operating activities in Schlumberger’s Consolidated Statement of Cash Flows when paid. All terms of the plea agreement are subject to judicial approval.

Schlumberger and its subsidiaries are party to various other legal proceedings from time to time. A liability is accrued when a loss is both probable and can be reasonably estimated. Management believes that the probability of a material loss with respect to these other legal proceedings is remote. However, litigation is inherently uncertain and it is not possible to predict the ultimate disposition of any of these proceedings.