Early Access program APR percentage that was allegedly misleading.

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Damages claimed by plaintiff in lawsuit again Fifth Third Bank.

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Damages claimed by plaintiff in lawsuit again Fifth Third Bank.

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Percentage of the funds paid into the class settlement escrow account have been returned to the control of the defendants through Class Exclusion Takedown Payments

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The designation of funds furnished by a borrower to a lender to assure future payments of the borrower's real estate taxes and insurance obligations with respect to a mortgaged property. Escrow deposits may be made for a variety of other purposes such as earnest money and contingent payments. This element excludes replacement reserves which are an escrow separately provided for within the US GAAP taxonomy.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03.10)
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

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Amount of judgment or settlement awarded to (against) the entity in respect of litigation.

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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.

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Number of plaintiffs that have filed claims pertaining to a loss contingency.

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The difference between the maximum amount of estimated loss and the amount recorded as of the balance sheet date.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 05
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=6395354&loc=d3e12631-108344

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Legal and Regulatory Proceedings (Legal and Regulatory Proceedings - Additional Information) (Detail) $ in Millions	3 Months Ended	12 Months Ended
	Sep. 30, 2017 USD ($)	Dec. 31, 2017 USD ($)	Dec. 31, 2013	Sep. 30, 2015 USD ($)	Sep. 30, 2013 USD ($)	Mar. 31, 2013 USD ($)	Sep. 30, 2012 USD ($)	Mar. 31, 2012 USD ($)
Loss Contingencies
Amount in excess of amounts reserved		$ 31.0
APR Percentage Allegedly Misleading							120.00%
Number Of Putative Class Actions Filed			4
Damages Claimed By Plaintiff				$ 800.0	$ 50.0		$ 70.0	$ 40.0
Federal Lawsuits
Loss Contingencies
Number of merchants requesting exclusion		500
Class Action Settlement
Loss Contingencies
Number of merchants requesting exclusion		8,000
Percentage of escrow funds returned to defendants		25.00%
Escrow Deposit						$ 46.0
LitigationSettlementAmount	$ 2.2