2.2.0.7 true Settlement and Travelers Cheque Risk Management - Additional Information (Detail) (USD $) 175 - Disclosure - Settlement and Travelers Cheque Risk Management - Additional Information (Detail) true false In Millions false false 1 USD false false iso4217_USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 pure Standard http://www.xbrl.org/2003/instance pure 0 iso4217_USD_per_shares Divide http://www.xbrl.org/2003/iso4217 USD iso4217 http://www.xbrl.org/2003/instance shares 0 shares Standard http://www.xbrl.org/2003/instance shares 0 $ false 2 USD false false iso4217_USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 pure Standard http://www.xbrl.org/2003/instance pure 0 shares Standard http://www.xbrl.org/2003/instance shares 0 $ 2 2 us-gaap_GuaranteeObligationsMaximumExposureInestimable us-gaap true na duration No definition available. false false false false false false false false false false false verboselabel false 1 false false false false 0 0 Of the total uncollateralized Settlement Exposure under the MasterCard brand, the United States accounted for approximately 38% and 40% at September 30, 2010 and December 31, 2009, respectively. With the exception of Brazil, which was 13% at September 30, 2010, no individual country other than the United States accounted for more than 10% of total uncollateralized Settlement Exposure at either September 30, 2010 or December 31, 2009. Of the total uncollateralized Settlement Exposure attributable to non-compliant members, five members represented approximately 41% and 56% at September 30, 2010 and December 31, 2009, respectively. false false false 2 false false false false 0 0 false false false xbrli:stringItemType string States the reasons why the guarantor is unable to develop an estimate of the maximum potential amount of future payments under its guarantee (or each group of similar guarantees). Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name FASB Interpretation (FIN) -Number 45 -Paragraph 13 -Subparagraph b false 4 2 us-gaap_GuaranteeObligationsMaximumExposure us-gaap true credit instant No definition available. false false false false false false false false false false false false 1 true true false false 350000000 350 false false false 2 true true false false 401000000 401 false false false xbrli:monetaryItemType monetary Maximum potential amount of future payments (undiscounted) the guarantor could be required to make under the guarantee or each group of similar guarantees before reduction for potential recoveries under recourse or collateralization provisions. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name FASB Interpretation (FIN) -Number 45 -Paragraph 13 -Subparagraph b false 5 2 us-gaap_GuarantyAssets us-gaap true debit instant No definition available. false false false false false false false false false false false false 1 false true false false 269000000 269 false false false 2 false true false false 313000000 313 false false false xbrli:monetaryItemType monetary This element represents the present value of cash flows expected to be received as compensation over the life of a guaranty issued to a third-party. The asset is accounted for at amortized cost and is reduced by the contractual stipulated cash payments received less the interest income component thereon. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Emerging Issues Task Force (EITF) -Number 99-20 -Paragraph 11 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name FASB Interpretation (FIN) -Number 45 -Paragraph 3 -Subparagraph b, d Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name FASB Interpretation (FIN) -Number 45 -Paragraph 5 false 6 2 ma_GuarantyAssetsLimited ma false debit instant Guaranty Assets, Limited false false false false false false false false false false false false 1 true true false false 14000000 14 false false false 2 true true false false 14000000 14 false false false xbrli:monetaryItemType monetary Guaranty Assets, Limited No authoritative reference available. false 7 0 na true na na No definition available. false true false false false false false false false false false http://www.mastercard.com/taxonomy/role/disclosuresettlementandtravelerschequeriskmanagementadditionalinformation false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false false 3 true false false false United States ma_RegionReportingInformationByRegionAxis xbrldi http://xbrl.org/2006/xbrldi ma_UnitedStatesMember ma_RegionReportingInformationByRegionAxis explicitMember pure Standard http://www.xbrl.org/2003/instance pure 0 false 4 true false false false United States ma_RegionReportingInformationByRegionAxis xbrldi http://xbrl.org/2006/xbrldi ma_UnitedStatesMember ma_RegionReportingInformationByRegionAxis explicitMember pure Standard http://www.xbrl.org/2003/instance pure 0 na No definition available. No authoritative reference available. false 9 2 ma_UncollateralizedSsettlementExposurePercent ma false na instant Uncollateralized Ssettlement Exposure Percent false false false false false false false false false false false verboselabel false 1 false true false false 0.38 0.38 false false false 2 false true false false 0.40 0.40 false false false us-types:percentItemType pure Uncollateralized Ssettlement Exposure Percent No authoritative reference available. false 13 0 na true na na No definition available. false true false false false false false false false false false http://www.mastercard.com/taxonomy/role/disclosuresettlementandtravelerschequeriskmanagementadditionalinformation false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false false 5 true false false false Brazil ma_RegionReportingInformationByRegionAxis xbrldi http://xbrl.org/2006/xbrldi ma_BrazilMember ma_RegionReportingInformationByRegionAxis explicitMember pure Standard http://www.xbrl.org/2003/instance pure 0 na No definition available. No authoritative reference available. false 15 2 ma_UncollateralizedSsettlementExposurePercent ma false na instant Uncollateralized Ssettlement Exposure Percent false false false false false false false false false false false verboselabel false 1 false true false false 0.13 0.13 false false false 2 false false false false 0 0 false false false us-types:percentItemType pure Uncollateralized Ssettlement Exposure Percent No authoritative reference available. false 19 0 na true na na No definition available. false true false false false false false false false false false http://www.mastercard.com/taxonomy/role/disclosuresettlementandtravelerschequeriskmanagementadditionalinformation false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false false 6 true false false false Country Other than United States ma_RegionReportingInformationByRegionAxis xbrldi http://xbrl.org/2006/xbrldi ma_OtherRegionsMember ma_RegionReportingInformationByRegionAxis explicitMember false false Upper Limit ma_RangeAxis xbrldi http://xbrl.org/2006/xbrldi ma_UpperLimitMember ma_RangeAxis explicitMember pure Standard http://www.xbrl.org/2003/instance pure 0 false 7 true false false false Country Other than United States ma_RegionReportingInformationByRegionAxis xbrldi http://xbrl.org/2006/xbrldi ma_OtherRegionsMember ma_RegionReportingInformationByRegionAxis explicitMember false false Upper Limit ma_RangeAxis xbrldi http://xbrl.org/2006/xbrldi ma_UpperLimitMember ma_RangeAxis explicitMember pure Standard http://www.xbrl.org/2003/instance pure 0 na No definition available. No authoritative reference available. false 21 2 ma_UncollateralizedSsettlementExposurePercent ma false na instant Uncollateralized Ssettlement Exposure Percent false false false false false false false false false false false verboselabel false 1 false true false false 0.1 0.1 false false false 2 false true false false 0.1 0.1 false false false us-types:percentItemType pure Uncollateralized Ssettlement Exposure Percent No authoritative reference available. false 25 0 na true na na No definition available. false true false false false false false false false false false http://www.mastercard.com/taxonomy/role/disclosuresettlementandtravelerschequeriskmanagementadditionalinformation false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false false 8 true false false false Five Non-compliant Members ma_RegionReportingInformationByRegionAxis xbrldi http://xbrl.org/2006/xbrldi ma_NonCompliantRegions5Member ma_RegionReportingInformationByRegionAxis explicitMember pure Standard http://www.xbrl.org/2003/instance pure 0 false 9 true false false false Five Non-compliant Members ma_RegionReportingInformationByRegionAxis xbrldi http://xbrl.org/2006/xbrldi ma_NonCompliantRegions5Member ma_RegionReportingInformationByRegionAxis explicitMember pure Standard http://www.xbrl.org/2003/instance pure 0 na No definition available. No authoritative reference available. false 27 2 ma_UncollateralizedSsettlementExposurePercent ma false na instant Uncollateralized Ssettlement Exposure Percent false false false false false false false false false false false verboselabel false 1 false true false false 0.41 0.41 false false false 2 false true false false 0.56 0.56 false false false us-types:percentItemType pure Uncollateralized Ssettlement Exposure Percent No authoritative reference available. false 2 12 false Millions UnKnown UnKnown false true