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Income (loss) Per Share (Tables) | 3 Months Ended
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Mar. 31, 2021
Earnings Per Share [Abstract] |
Reconciliation of Income (Loss) Per Share | The following is a reconciliation from basic income (loss) per share of Schlumberger to diluted income (loss) per share of Schlumberger:
(Stated in millions, except per share amounts) |
| 2021 |  |  | 2020 |
| Schlumberger Net Income |  |  | Average Shares Outstanding |  |  | Income per Share |  |  | Schlumberger Net Loss |  |  | Average Shares Outstanding |  |  | Loss per Share |
First Quarter |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basic | $ | 299 |  |  |  | 1,398 |  |  | $ | 0.21 |  |  | $ | (7,376 | ) |  |  | 1,387 |  |  | $ | (5.32 | )
Unvested restricted stock |  | - |  |  |  | 21 |  |  |  |  |  |  |  | - |  |  |  | - |  |  |  |  |
Diluted | $ | 299 |  |  |  | 1,419 |  |  | $ | 0.21 |  |  | $ | (7,376 | ) |  |  | 1,387 |  |  | $ | (5.32 | )
Schedule of Antidilutive Securities Excluded from Computation of Loss Per Share | The number of outstanding options to purchase shares of Schlumberger common stock that were not included in the computation of diluted loss per share, because to do so would have had an antidilutive effect, was as follows:
(Stated in millions) |
| Three Months Ended March 31, |
| 2021 |  |  | 2020 |
Employee stock options |  | 44 |  |  |  | 51 |
Unvested restricted stock |  | - |  |  |  | 16 |

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- Definition Tabular disclosure of securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) in the future that were not included in the computation of diluted EPS because to do so would increase EPS amounts or decrease loss per share amounts for the period presented, by antidilutive securities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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