XML 69 R57.htm IDEA: XBRL DOCUMENT v3.5.0.2

Derivative Instruments - Fuel Derivative Program (Details)	Mar. 31, 2016
Price Risk Derivative
Derivative [Line Items]
Percentage hedged by fuel price derivatives	20.00%

X

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

Name:	us-gaap_DerivativeLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Percentage Hedged by Fuel Price Derivatives

+ References

No definition available.

+ Details

Name:	wex_PercentageHedgedbyFuelPriceDerivatives
Namespace Prefix:	wex_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

X

- Details

Name:	us-gaap_DerivativeInstrumentRiskAxis=us-gaap_PriceRiskDerivativeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: