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Multiclient Seismic Data - Multiclient Seismic Data Table (Detail) (USD $)
In Millions, unless otherwise specified
 12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Goodwill Abstract    
Opening balance $ 667slb_MulticlientSeismicData $ 518slb_MulticlientSeismicData
Capitalized in year 321slb_MulticlientSeismicDataCapitalizedInPeriod 394slb_MulticlientSeismicDataCapitalizedInPeriod
Charged to expense (195)slb_MulticlientSeismicDataChargedToCostOfGoodsSoldAndServices (245)slb_MulticlientSeismicDataChargedToCostOfGoodsSoldAndServices
Ending balance $ 793slb_MulticlientSeismicData $ 667slb_MulticlientSeismicData