Multiclient Seismic Data - Multiclient Seismic Data Table (Detail) (USD $) In Millions, unless otherwise specified	9 Months Ended
Sep. 30, 2014
Goodwill Abstract
Opening balance	$ 667
Capitalized in period	212
Charged to expense	(128)
Ending balance	$ 751

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