XML 105 R86.htm IDEA: XBRL DOCUMENT v3.20.4

Deposits - Narrative (Details) - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Banking and Thrift, Interest [Abstract]
Required reserve	$ 24,900,000	$ 24,900,000
Maximum money market and demand deposit accounts purchasable	125,000,000.0
Outstanding balance of ICS purchases	$ 0	$ 0

X

- References

No definition available.

+ Details

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

X

- Definition

Cash deposited in a special reserve account for the exclusive benefit of customers pursuant to SEC Regulations.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=116631393&loc=SL116631396-227033

+ Details

Name:	us-gaap_CashReserveDepositRequiredAndMade
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Maximum Money Market And Demand Deposit Accounts Purchasable

+ References

No definition available.

+ Details

Name:	wex_MaximumMoneyMarketAndDemandDepositAccountsPurchasable
Namespace Prefix:	wex_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Money Market And Demand Deposit Accounts, Insured Cash Sweep

+ References

No definition available.

+ Details

Name:	wex_MoneyMarketAndDemandDepositAccountsInsuredCashSweep
Namespace Prefix:	wex_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant