v2.4.1.9
Business Acquisitions and Other Intangible Assets Acquisitions - Summary of Evolution1 Acquisition (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended 0 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Jul. 16, 2014
Business Acquisition [Line Items]        
Consideration paid (net of cash acquired) $ 891,725us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired $ 11,277us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired $ 402,475us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired  
Recorded goodwill 1,116,365us-gaap_Goodwill [1] 819,892us-gaap_Goodwill [1] 847,986us-gaap_Goodwill  
Evolution1        
Business Acquisition [Line Items]        
Consideration paid (net of cash acquired)       532,174us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired
/ us-gaap_BusinessAcquisitionAxis
= wex_EvolutionOneMember
Accounts receivable       8,418us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsReceivables
/ us-gaap_BusinessAcquisitionAxis
= wex_EvolutionOneMember
Accounts payable       (175)us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesAccountsPayable
/ us-gaap_BusinessAcquisitionAxis
= wex_EvolutionOneMember
Deferred tax liabilities, net       (68,516)us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDeferredTaxLiabilitiesNoncurrent
/ us-gaap_BusinessAcquisitionAxis
= wex_EvolutionOneMember
Other tangible assets and liabilities, net       (3,585)wex_BusinessCombinationRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedOtherTangibleAssetsLiabilities
/ us-gaap_BusinessAcquisitionAxis
= wex_EvolutionOneMember
Recorded goodwill       296,132us-gaap_Goodwill
/ us-gaap_BusinessAcquisitionAxis
= wex_EvolutionOneMember
Evolution1 | Acquired software and developed technology        
Business Acquisition [Line Items]        
Finite-lived intangible assets       70,000us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles
/ us-gaap_BusinessAcquisitionAxis
= wex_EvolutionOneMember
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= wex_AcquiredSoftwareandDevelopedTechnologyMember
[2]
Weighted average life       6 years 4 months 24 days
Evolution1 | Customer relationships        
Business Acquisition [Line Items]        
Finite-lived intangible assets       211,000us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles
/ us-gaap_BusinessAcquisitionAxis
= wex_EvolutionOneMember
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= us-gaap_CustomerRelationshipsMember
[3]
Weighted average life       9 years 8 months 12 days
Evolution1 | Trademarks and trade names        
Business Acquisition [Line Items]        
Finite-lived intangible assets       7,900us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles
/ us-gaap_BusinessAcquisitionAxis
= wex_EvolutionOneMember
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= us-gaap_TrademarksAndTradeNamesMember
[4]
Indefinite-lived intangible assets       $ 11,000us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIndefiniteLivedIntangibleAssets
/ us-gaap_BusinessAcquisitionAxis
= wex_EvolutionOneMember
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= us-gaap_TrademarksAndTradeNamesMember
[5]
Weighted average life       9 years 10 months 24 days
[1] The prior year amounts have been adjusted to reflect changes as a result of finalizing the purchase accounting.
[2] Weighted average life – 6.4 years.
[3] Weighted average life – 9.7 years.
[4] Weighted average life – 9.9 years.
[5] Indefinite-lived