Acquisitions - Schedule of Fair Value of Consideration Transferred to Effect Acquisition (Detail) $ / shares in Units, $ in Millions	Apr. 02, 2016 USD ($) $ / shares shares	Dec. 31, 2017 shares	Dec. 31, 2016 shares
Equity consideration:
Number of shares of Cameron stock outstanding		1,383,932,776	1,391,475,510
Cash consideration:
Number of shares of Cameron stock outstanding		1,383,932,776	1,391,475,510
Cameron
Equity consideration:
Number of shares of Cameron stock outstanding	192,000,000
Exchange ratio	0.716
Schlumberger shares of common stock issued	138,000,000
Schlumberger closing stock share price on April 1, 2016 | $ / shares	$ 72.12
Equity consideration | $	$ 9,924
Cash consideration:
Number of shares of Cameron stock outstanding	192,000,000
Cash consideration per Cameron share | $ / shares	$ 14.44
Cash consideration | $	$ 2,776
Other:
Fair value of replacement equity awards | $	103
Total fair value of the consideration transferred | $	$ 12,803