Multiclient Seismic Data - Multiclient Seismic Data Table (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended
Mar. 31, 2015
Goodwill Abstract
Opening balance	$ 793slb_MulticlientSeismicData
Capitalized in period	101
Charged to expense	(44)
Ending balance	$ 850slb_MulticlientSeismicData

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