Multiclient Seismic Data - Multiclient Seismic Data Table (Detail) (USD $) In Millions, unless otherwise specified	6 Months Ended
Jun. 30, 2013
Goodwill And Intangible Assets Disclosure [Abstract]
Opening Balance	$ 518
Capitalized in period	222
Charged to expense	(106)
Ending Balance	$ 634

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