Earnings Per Share - Reconciliation of Income Per Share (Detail) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended
Mar. 31, 2022	Mar. 31, 2021
Net Income Attributable to Schlumberger
Basic	$ 510	$ 299
Diluted	$ 510	$ 299
Average Shares Outstanding
Basic	1,412	1,398
Unvested restricted stock	22	21
Diluted	1,434	1,419
Earnings per Share
Basic	$ 0.36	$ 0.21
Diluted	$ 0.36	$ 0.21

The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.

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