Multiclient Seismic Data - Change in Carrying Amount of Multiclient Seismic Data (Detail) $ in Millions	9 Months Ended
Sep. 30, 2019 USD ($)
Multiclient Seismic Data [Abstract]
Opening balance	$ 601
Capitalized in period	181
Charged to expense	(189)
Ending balance	$ 593

Capitalized costs directly incurred in acquiring and processing of seismic surveys that are licensed on a nonexclusive basis, net of amortization.

No definition available.

Name:	slb_MulticlientSeismicData
Namespace Prefix:	slb_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant