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Segment Information (Products and Services) (Details)
 12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Revenue from External Customer [Line Items]      
Consolidated revenues by product line 100.00%us-gaap_ConcentrationRiskPercentage1 100.00%us-gaap_ConcentrationRiskPercentage1 100.00%us-gaap_ConcentrationRiskPercentage1
Product Concentration Risk [Member] | Sales Revenue, Net [Member] | Formation Evaluation and Well Construction [Member]      
Revenue from External Customer [Line Items]      
Consolidated revenues by product line 58.00%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_SalesRevenueNetMember
/ us-gaap_ConcentrationRiskByTypeAxis
= us-gaap_ProductConcentrationRiskMember
/ us-gaap_ProductOrServiceAxis
= wft_FormationEvaluationAndWellConstructionMember		 61.00%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_SalesRevenueNetMember
/ us-gaap_ConcentrationRiskByTypeAxis
= us-gaap_ProductConcentrationRiskMember
/ us-gaap_ProductOrServiceAxis
= wft_FormationEvaluationAndWellConstructionMember		 56.00%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_SalesRevenueNetMember
/ us-gaap_ConcentrationRiskByTypeAxis
= us-gaap_ProductConcentrationRiskMember
/ us-gaap_ProductOrServiceAxis
= wft_FormationEvaluationAndWellConstructionMember
Product Concentration Risk [Member] | Sales Revenue, Net [Member] | Completion and Production [Member]      
Revenue from External Customer [Line Items]      
Consolidated revenues by product line 42.00%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_SalesRevenueNetMember
/ us-gaap_ConcentrationRiskByTypeAxis
= us-gaap_ProductConcentrationRiskMember
/ us-gaap_ProductOrServiceAxis
= wft_CompletionAndProductionMember		 39.00%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_SalesRevenueNetMember
/ us-gaap_ConcentrationRiskByTypeAxis
= us-gaap_ProductConcentrationRiskMember
/ us-gaap_ProductOrServiceAxis
= wft_CompletionAndProductionMember		 44.00%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_SalesRevenueNetMember
/ us-gaap_ConcentrationRiskByTypeAxis
= us-gaap_ProductConcentrationRiskMember
/ us-gaap_ProductOrServiceAxis
= wft_CompletionAndProductionMember