2.2.0.25truefalse40402 - Disclosure - Note 4. Share-Based Compensation (Restricted Stock and Performance Share Awards) (Narrative) (Details)truefalseIn Millions, unless otherwise specifiedfalse1falsefalseUSDtruefalse{us-gaap_ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentAwardAwardTypeAndPlanNameAxis} : Restricted Stock and Performance Share Awards [Member]
2/1/2010 - 1/31/2011
USD ($) / shares
USD ($)
$Duration_2_1_2010_To_1_31_20112232http://www.sec.gov/CIK0000104169duration2010-02-01T00:00:002011-01-31T00:00:00falsefalseRestricted Stock and Performance Share Awards [Member]us-gaap_ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentAwardAwardTypeAndPlanNameAxisxbrldihttp://xbrl.org/2006/xbrldiwmt_RestrictedStockAndPerformanceShareAwardsMemberus-gaap_ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentAwardAwardTypeAndPlanNameAxisexplicitMemberUnit16Dividehttp://www.xbrl.org/2003/iso4217USDiso4217http://www.xbrl.org/2003/instancesharesxbrli0Unit12Standardhttp://www.xbrl.org/2003/iso4217USDiso42170Unit1Standardhttp://www.xbrl.org/2003/instancesharesxbrli0Unit15Standardhttp://www.xbrl.org/2003/instancepurexbrli0USDUSD$2falsefalseUSDtruefalse{us-gaap_ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentAwardAwardTypeAndPlanNameAxis} : Restricted Stock and Performance Share Awards [Member]
2/1/2009 - 1/31/2010
USD ($)
$Duration_2_1_2009_To_1_31_20103223http://www.sec.gov/CIK0000104169duration2009-02-01T00:00:002010-01-31T00:00:00falsefalseRestricted Stock and Performance Share Awards [Member]us-gaap_ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentAwardAwardTypeAndPlanNameAxisxbrldihttp://xbrl.org/2006/xbrldiwmt_RestrictedStockAndPerformanceShareAwardsMemberus-gaap_ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentAwardAwardTypeAndPlanNameAxisexplicitMemberUnit12Standardhttp://www.xbrl.org/2003/iso4217USDiso42170Unit1Standardhttp://www.xbrl.org/2003/instancesharesxbrli0Unit16Dividehttp://www.xbrl.org/2003/iso4217USDiso4217http://www.xbrl.org/2003/instancesharesxbrli0USDUSD$3falsefalseUSDtruefalse{us-gaap_ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentAwardAwardTypeAndPlanNameAxis} : Restricted Stock and Performance Share Awards [Member]
2/1/2008 - 1/31/2009
USD ($)
$Duration_2_1_2008_To_1_31_200926http://www.sec.gov/CIK0000104169duration2008-02-01T00:00:002009-01-31T00:00:00falsefalseRestricted Stock and Performance Share Awards [Member]us-gaap_ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentAwardAwardTypeAndPlanNameAxisxbrldihttp://xbrl.org/2006/xbrldiwmt_RestrictedStockAndPerformanceShareAwardsMemberus-gaap_ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentAwardAwardTypeAndPlanNameAxisexplicitMemberUnit12Standardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$1false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://www.walmartstores.com/taxonomy/role/disclosurenote4sharebasedcompensationrestrictedstockandperformanceshareawardsnarrativedetails1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse1falsefalsetruefalse{us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis} : Minimum [Member]
2/1/2010 - 1/31/2011
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2/1/2010 - 1/31/2011
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2/1/2010 - 1/31/2011
USD ($) / shares
USD ($)
$Duration_2_1_2010_To_1_31_20112232http://www.sec.gov/CIK0000104169duration2010-02-01T00:00:002011-01-31T00:00:00falsefalseRestricted Stock and Performance Share Awards [Member]us-gaap_ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentAwardAwardTypeAndPlanNameAxisxbrldihttp://xbrl.org/2006/xbrldiwmt_RestrictedStockAndPerformanceShareAwardsMemberus-gaap_ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentAwardAwardTypeAndPlanNameAxisexplicitMemberUnit16Dividehttp://www.xbrl.org/2003/iso4217USDiso4217http://www.xbrl.org/2003/instancesharesxbrli0Unit12Standardhttp://www.xbrl.org/2003/iso4217USDiso42170Unit1Standardhttp://www.xbrl.org/2003/instancesharesxbrli0Unit15Standardhttp://www.xbrl.org/2003/instancepurexbrli0USDUSD$2falsefalseUSDtruefalse{us-gaap_ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentAwardAwardTypeAndPlanNameAxis} : Restricted Stock and Performance Share Awards [Member]
2/1/2009 - 1/31/2010
USD ($)
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2/1/2008 - 1/31/2009
USD ($)
$Duration_2_1_2008_To_1_31_200926http://www.sec.gov/CIK0000104169duration2008-02-01T00:00:002009-01-31T00:00:00falsefalseRestricted Stock and Performance Share Awards [Member]us-gaap_ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentAwardAwardTypeAndPlanNameAxisxbrldihttp://xbrl.org/2006/xbrldiwmt_RestrictedStockAndPerformanceShareAwardsMemberus-gaap_ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentAwardAwardTypeAndPlanNameAxisexplicitMemberUnit12Standardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$OthernaNo definition available.No authoritative reference available.falsefalse6false0us-gaap_DeferredCompensationSharebasedArrangementsLiabilityCurrentAndNoncurrentus-gaaptruecreditinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1truefalsefalse1200000012falsetruefalsefalsefalse2truefalsefalse6300000063falsetruefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryAggregate carrying value as of the balance sheet date of the liabilities for stock option plans and other share-based compensation arrangements.No authoritative reference available.falsefalse7false0us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedus-gaaptruedebitinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1truefalsefalse331000000331falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryAs of the balance-sheet date, the aggregate unrecognized cost of share-based awards made to employees under share-based compensation plans that have yet to vest.Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 123R
-Paragraph A240
-Subparagraph h
falsefalse8false0us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognitionus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1truefalsefalse2.32.3falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:decimalItemTypedecimalThe weighted average period over which unrecognized compensation is expected to be recognized for share-based compensation plans, using a decimal to express in number of years.Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 123R
-Paragraph A240
-Subparagraph h
falsefalse9false0us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValueus-gaaptruedebitdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1truefalsefalse142000000142falsetruefalsefalsefalse2truefalsefalse110000000110falsetruefalsefalsefalse3truefalsefalse5500000055falsetruefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe total fair value of share-based awards for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares, other instruments, or cash in accordance with the terms of the arrangement.Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 123R
-Paragraph A240
-Subparagraph c(2)
falsefalse39Note 4. Share-Based Compensation (Restricted Stock and Performance Share Awards) (Narrative) (Details) (USD $)MillionsUnKnownUnKnownUnKnowntruetrue
