2.2.0.7trueSettlement and Travelers Cheque Risk Management - Additional Information (Detail) (USD $)175 - Disclosure - Settlement and Travelers Cheque Risk Management - Additional Information (Detail)truefalseIn Millionsfalsefalse1USDfalsefalseiso4217_USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170pureStandardhttp://www.xbrl.org/2003/instancepure0iso4217_USD_per_sharesDividehttp://www.xbrl.org/2003/iso4217USDiso4217http://www.xbrl.org/2003/instanceshares0sharesStandardhttp://www.xbrl.org/2003/instanceshares0$false2USDfalsefalseiso4217_USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170pureStandardhttp://www.xbrl.org/2003/instancepure0sharesStandardhttp://www.xbrl.org/2003/instanceshares0$22us-gaap_GuaranteeObligationsMaximumExposureInestimableus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabelfalse1falsefalsefalsefalse00Of 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.falsefalsefalse2falsefalsefalsefalse00falsefalsefalsexbrli:stringItemTypestringStates 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
false42us-gaap_GuaranteeObligationsMaximumExposureus-gaaptruecreditinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalsefalse350000000350falsefalsefalse2truetruefalsefalse401000000401falsefalsefalsexbrli:monetaryItemTypemonetaryMaximum 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
false52us-gaap_GuarantyAssetsus-gaaptruedebitinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsetruefalsefalse269000000269falsefalsefalse2falsetruefalsefalse313000000313falsefalsefalsexbrli:monetaryItemTypemonetaryThis 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
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Statesma_RegionReportingInformationByRegionAxisxbrldihttp://xbrl.org/2006/xbrldima_UnitedStatesMemberma_RegionReportingInformationByRegionAxisexplicitMemberpureStandardhttp://www.xbrl.org/2003/instancepure0naNo definition available.No authoritative reference available.false92ma_UncollateralizedSsettlementExposurePercentmafalsenainstantUncollateralized Ssettlement Exposure Percentfalsefalsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabelfalse1falsetruefalsefalse0.380.38falsefalsefalse2falsetruefalsefalse0.400.40falsefalsefalseus-types:percentItemTypepureUncollateralized Ssettlement Exposure PercentNo authoritative reference available.false130natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsefalsehttp://www.mastercard.com/taxonomy/role/disclosuresettlementandtravelerschequeriskmanagementadditionalinformationfalse1falsefalsefalsefalse00falsefalsefalse2falsefalsefalsefalse00falsefalsefalsefalse5truefalsefalsefalseBrazilma_RegionReportingInformationByRegionAxisxbrldihttp://xbrl.org/2006/xbrldima_BrazilMemberma_RegionReportingInformationByRegionAxisexplicitMemberpureStandardhttp://www.xbrl.org/2003/instancepure0naNo definition available.No authoritative reference available.false152ma_UncollateralizedSsettlementExposurePercentmafalsenainstantUncollateralized Ssettlement Exposure Percentfalsefalsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabelfalse1falsetruefalsefalse0.130.13falsefalsefalse2falsefalsefalsefalse00falsefalsefalseus-types:percentItemTypepureUncollateralized Ssettlement Exposure PercentNo authoritative reference available.false190natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsefalsehttp://www.mastercard.com/taxonomy/role/disclosuresettlementandtravelerschequeriskmanagementadditionalinformationfalse1falsefalsefalsefalse00falsefalsefalse2falsefalsefalsefalse00falsefalsefalsefalse6truefalsefalsefalseCountry Other than United Statesma_RegionReportingInformationByRegionAxisxbrldihttp://xbrl.org/2006/xbrldima_OtherRegionsMemberma_RegionReportingInformationByRegionAxisexplicitMemberfalsefalseUpper Limitma_RangeAxisxbrldihttp://xbrl.org/2006/xbrldima_UpperLimitMemberma_RangeAxisexplicitMemberpureStandardhttp://www.xbrl.org/2003/instancepure0false7truefalsefalsefalseCountry Other than United Statesma_RegionReportingInformationByRegionAxisxbrldihttp://xbrl.org/2006/xbrldima_OtherRegionsMemberma_RegionReportingInformationByRegionAxisexplicitMemberfalsefalseUpper Limitma_RangeAxisxbrldihttp://xbrl.org/2006/xbrldima_UpperLimitMemberma_RangeAxisexplicitMemberpureStandardhttp://www.xbrl.org/2003/instancepure0naNo definition available.No authoritative reference available.false212ma_UncollateralizedSsettlementExposurePercentmafalsenainstantUncollateralized Ssettlement Exposure Percentfalsefalsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabelfalse1falsetruefalsefalse0.10.1falsefalsefalse2falsetruefalsefalse0.10.1falsefalsefalseus-types:percentItemTypepureUncollateralized Ssettlement Exposure PercentNo authoritative reference available.false250natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsefalsehttp://www.mastercard.com/taxonomy/role/disclosuresettlementandtravelerschequeriskmanagementadditionalinformationfalse1falsefalsefalsefalse00falsefalsefalse2falsefalsefalsefalse00falsefalsefalsefalse8truefalsefalsefalseFive Non-compliant Membersma_RegionReportingInformationByRegionAxisxbrldihttp://xbrl.org/2006/xbrldima_NonCompliantRegions5Memberma_RegionReportingInformationByRegionAxisexplicitMemberpureStandardhttp://www.xbrl.org/2003/instancepure0false9truefalsefalsefalseFive Non-compliant Membersma_RegionReportingInformationByRegionAxisxbrldihttp://xbrl.org/2006/xbrldima_NonCompliantRegions5Memberma_RegionReportingInformationByRegionAxisexplicitMemberpureStandardhttp://www.xbrl.org/2003/instancepure0naNo definition available.No authoritative reference available.false272ma_UncollateralizedSsettlementExposurePercentmafalsenainstantUncollateralized Ssettlement Exposure Percentfalsefalsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabelfalse1falsetruefalsefalse0.410.41falsefalsefalse2falsetruefalsefalse0.560.56falsefalsefalseus-types:percentItemTypepureUncollateralized Ssettlement Exposure PercentNo authoritative reference available.false212falseMillionsUnKnownUnKnownfalsetrue