as the payments landscape evolves , we may increasingly face competition from emerging players in the payment space , many of which are non-financial institution networks that have departed from the more traditional 201cbank-centric 201d business model . the emergence of these potentially competitive networks has primarily been via the online channel with a focus on ecommerce and/or mobile technologies . paypal , google and isis are examples . these providers compete with visa directly in some cases , yet may also be significant partners and customers of visa . based on payments volume , total volume and number of transactions , visa is the largest retail electronic payments network in the world . the following chart compares our network with those of our major general purpose payment network competitors for calendar year 2011 : company payments volume volume transactions cards ( billions ) ( billions ) ( billions ) ( millions ) visa inc. ( 1 ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . $ 3768 $ 6029 77.6 2011 .
what is the average payment per transaction of discover holders?
( 1 ) visa inc . figures as reported on form 8-k filed with the sec on february 8 and may 2 , 2012 , respectively . visa figures represent total volume , payments volume and cash volume , and the number of payments transactions , cash transactions , accounts and cards for products carrying the visa , visa electron and interlink brands . card counts include plus proprietary cards . payments volume represents the aggregate dollar amount of purchases made with cards carrying the visa , visa electron and interlink brands for the relevant period . total volume represents payments volume plus cash volume . the data presented is reported quarterly by visa 2019s clients on their operating certificates and is subject to verification by visa . on occasion , clients may update previously submitted information . sources : mastercard , american express , jcb and diners club data sourced from the nilson report issue 992 ( april 2012 ) . includes all consumer and commercial credit , debit and prepaid cards . some prior year figures have been restated . currency figures are in u.s . dollars . mastercard excludes maestro and cirrus figures . american express includes figures for third-party issuers . jcb figures include third-party issuers and other payment-related products . some figures are estimates . diners club figures are for the 12 months ended november 30 , 2011 . discover data sourced from the nilson report issue 986 ( january 2012 ) 2014u.s . data only and includes business from third-party issuers . for more information on the concentration of our operating revenues and other financial information , see item 8 2014financial statements and supplementary data 2014note 14 2014enterprise-wide disclosures and concentration of business included elsewhere in this report . working capital requirements payments settlement due from and due to issuing and acquiring clients represents a substantial daily working capital requirement . u.s . dollar settlements are typically settled within the same day and do not result in a receivable or payable balance , while settlement currencies other than the u.s . dollar generally remain outstanding for one to two business days , consistent with industry practice for such transactions. .