Earnings Per Share - Reconciliation of Income Per Share (Detail) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Net Income Attributable to Schlumberger
Basic	$ 959	$ 431	$ 1,469	$ 730
Diluted	$ 959	$ 431	$ 1,469	$ 730
Average Shares Outstanding
Basic	1,414	1,398	1,413	1,398
Unvested restricted stock	22	23	22	22
Diluted	1,436	1,421	1,435	1,420
Earnings per Share
Basic	$ 0.68	$ 0.31	$ 1.04	$ 0.52
Diluted	$ 0.67	$ 0.30	$ 1.02	$ 0.51