2.2.0.25truefalse41602 - Disclosure - Note 16. Segments (Reconciliation to Consolidated Income from Continuing Operations Before Income Taxes) (Details)truefalseIn Millionsfalse1falsefalseUSDfalsefalse11/1/2010 - 1/31/2011
USD ($)
USD ($) / shares
$Duration_11_1_2010_To_1_31_2011http://www.sec.gov/CIK0000104169duration2010-11-01T00:00:002011-01-31T00:00:00Unit12Standardhttp://www.xbrl.org/2003/iso4217USDiso42170Unit16Dividehttp://www.xbrl.org/2003/iso4217USDiso4217http://www.xbrl.org/2003/instancesharesxbrli0USDUSD$2falsefalseUSDfalsefalse8/1/2010 - 10/31/2010
USD ($) / shares
USD ($)
$Duration_8_1_2010_To_10_31_2010http://www.sec.gov/CIK0000104169duration2010-08-01T00:00:002010-10-31T00:00:00Unit16Dividehttp://www.xbrl.org/2003/iso4217USDiso4217http://www.xbrl.org/2003/instancesharesxbrli0Unit12Standardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$3falsefalseUSDfalsefalse5/1/2010 - 7/31/2010
USD ($)
USD ($) / shares
$Duration_5_1_2010_To_7_31_2010http://www.sec.gov/CIK0000104169duration2010-05-01T00:00:002010-07-31T00:00:00Unit12Standardhttp://www.xbrl.org/2003/iso4217USDiso42170Unit16Dividehttp://www.xbrl.org/2003/iso4217USDiso4217http://www.xbrl.org/2003/instancesharesxbrli0USDUSD$4falsefalseUSDfalsefalse2/1/2010 - 4/30/2010
USD ($)
USD ($) / shares
$Duration_2_1_2010_To_4_30_2010http://www.sec.gov/CIK0000104169duration2010-02-01T00:00:002010-04-30T00:00:00Unit12Standardhttp://www.xbrl.org/2003/iso4217USDiso42170Unit16Dividehttp://www.xbrl.org/2003/iso4217USDiso4217http://www.xbrl.org/2003/instancesharesxbrli0USDUSD$5falsefalseUSDfalsefalse11/1/2009 - 1/31/2010
USD ($)
USD ($) / shares
$Duration_11_1_2009_To_1_31_2010http://www.sec.gov/CIK0000104169duration2009-11-01T00:00:002010-01-31T00:00:00Unit12Standardhttp://www.xbrl.org/2003/iso4217USDiso42170Unit16Dividehttp://www.xbrl.org/2003/iso4217USDiso4217http://www.xbrl.org/2003/instancesharesxbrli0USDUSD$6falsefalseUSDfalsefalse8/1/2009 - 10/31/2009
USD ($)
USD ($) / shares
$Duration_8_1_2009_To_10_31_2009http://www.sec.gov/CIK0000104169duration2009-08-01T00:00:002009-10-31T00:00:00Unit12Standardhttp://www.xbrl.org/2003/iso4217USDiso42170Unit16Dividehttp://www.xbrl.org/2003/iso4217USDiso4217http://www.xbrl.org/2003/instancesharesxbrli0USDUSD$7falsefalseUSDfalsefalse5/1/2009 - 7/31/2009
USD ($)
USD ($) / shares
$Duration_5_1_2009_To_7_31_2009http://www.sec.gov/CIK0000104169duration2009-05-01T00:00:002009-07-31T00:00:00Unit12Standardhttp://www.xbrl.org/2003/iso4217USDiso42170Unit16Dividehttp://www.xbrl.org/2003/iso4217USDiso4217http://www.xbrl.org/2003/instancesharesxbrli0USDUSD$8falsefalseUSDfalsefalse2/1/2009 - 4/30/2009
USD ($)
USD ($) / shares
$Duration_2_1_2009_To_4_30_2009http://www.sec.gov/CIK0000104169duration2009-02-01T00:00:002009-04-30T00:00:00Unit12Standardhttp://www.xbrl.org/2003/iso4217USDiso42170Unit16Dividehttp://www.xbrl.org/2003/iso4217USDiso4217http://www.xbrl.org/2003/instancesharesxbrli0USDUSD$9falsefalseUSDfalsefalse2/1/2010 - 1/31/2011
USD ($)
USD ($) / shares
$Duration_2_1_2010_To_1_31_2011http://www.sec.gov/CIK0000104169duration2010-02-01T00:00:002011-01-31T00:00:00Unit12Standardhttp://www.xbrl.org/2003/iso4217USDiso42170Unit15Standardhttp://www.xbrl.org/2003/instancepurexbrli0Unit16Dividehttp://www.xbrl.org/2003/iso4217USDiso4217http://www.xbrl.org/2003/instancesharesxbrli0Unit1Standardhttp://www.xbrl.org/2003/instancesharesxbrli0USDUSD$10falsefalseUSDfalsefalse2/1/2009 - 1/31/2010
USD ($)
USD ($) / shares
$Duration_2_1_2009_To_1_31_2010http://www.sec.gov/CIK0000104169duration2009-02-01T00:00:002010-01-31T00:00:00Unit12Standardhttp://www.xbrl.org/2003/iso4217USDiso42170Unit16Dividehttp://www.xbrl.org/2003/iso4217USDiso4217http://www.xbrl.org/2003/instancesharesxbrli0Unit15Standardhttp://www.xbrl.org/2003/instancepurexbrli0Unit1Standardhttp://www.xbrl.org/2003/instancesharesxbrli0USDUSD$11falsefalseUSDfalsefalse2/1/2008 - 1/31/2009
USD ($)
USD ($) / shares
$Duration_2_1_2008_To_1_31_2009http://www.sec.gov/CIK0000104169duration2008-02-01T00:00:002009-01-31T00:00:00Unit12Standardhttp://www.xbrl.org/2003/iso4217USDiso42170Unit15Standardhttp://www.xbrl.org/2003/instancepurexbrli0Unit1Standardhttp://www.xbrl.org/2003/instancesharesxbrli0Unit16Dividehttp://www.xbrl.org/2003/iso4217USDiso4217http://www.xbrl.org/2003/instancesharesxbrli0USDUSD$2false0us-gaap_SalesRevenueNetus-gaaptruecreditdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1truefalsefalse115600000000115600falsetruefalsefalsefalse2truefalsefalse101239000000101239falsetruefalsefalsefalse3truefalsefalse103016000000103016falsetruefalsefalsefalse4truefalsefalse9909700000099097[1]falsetruefalsefalsefalse5truefalsefalse112826000000112826[1]falsetruefalsefalsefalse6truefalsefalse9866700000098667falsetruefalsefalsefalse7truefalsefalse100168000000100168falsetruefalsefalsefalse8truefalsefalse9347100000093471[1]falsetruefalsefalsefalse9truefalsefalse418952000000418952falsetruefalsefalsefalse10truefalsefalse405132000000405132[2],[3]falsetruefalsefalsefalse11truefalsefalse401087000000401087[2],[3]falsetruefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryTotal revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts.Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 03
-Paragraph 1
-Article 5
falsefalse3false0us-gaap_OperatingIncomeLossus-gaaptruecreditdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse2554200000025542falsefalsefalsefalsefalse10truefalsefalse2400200000024002[2],[3]falsefalsefalsefalsefalse11truefalsefalse2276700000022767[2],[3]falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe net result for the period of deducting operating expenses from operating revenues.No authoritative reference available.falsefalse4false0us-gaap_InterestIncomeExpenseNetus-gaaptruecreditdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse-2004000000-2004falsefalsefalsefalsefalse10truefalsefalse-1884000000-1884[3]falsefalsefalsefalsefalse11truefalsefalse-1900000000-1900[3]falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryAmount of net interest income or expense derived from banking operations.Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 04
-Paragraph 10
-Article 9
falsefalse5false0us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestmentsus-gaaptruecreditdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalsetotallabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse2353800000023538falsefalsefalsefalsefalse10truefalsefalse2211800000022118[2],[3]falsefalsefalsefalsefalse11truefalsefalse2086700000020867[2],[3]falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetarySum of operating profit and nonoperating income (expense) before income (loss) from equity method investments, income taxes, extraordinary items, cumulative effects of changes in accounting principles, and noncontrolling interest.Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 08
-Paragraph h
-Subparagraph 1(i)
-Article 4
truefalse6false0wmt_TotalAssetsOfContinuingOperationswmtfalsedebitdurationTotal assets of continuing operationsfalsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse180532000000180532falsefalsefalsefalsefalse10truefalsefalse170267000000170267[2]falsefalsefalsefalsefalse11truefalsefalse162901000000162901[2]falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryTotal assets of continuing operationsNo authoritative reference available.falsefalse7false0us-gaap_DepreciationAndAmortizationus-gaaptruedebitdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse76410000007641falsefalsefalsefalsefalse10truefalsefalse71570000007157[3]falsefalsefalsefalsefalse11truefalsefalse67390000006739[3]falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe current period expense charged against earnings on long-lived, physical assets not used in production, and which are not intended for resale, to allocate or recognize the cost of such assets over their useful lives; or to record the reduction in book value of an intangible asset over the benefit period of such asset; or to reflect consumption during the period of an asset that is not used in production.Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 95
-Paragraph 28
Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Accounting Principles Board Opinion (APB)
-Number 12
-Paragraph 5
falsefalse8false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://www.walmartstores.com/taxonomy/role/disclosurenote16segmentsreconciliationtoconsolidatedincomefromcontinuingoperationsbeforeincometaxesdetails1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9falsefalsefalse00falsefalsefalsefalsefalse10falsefalsefalse00falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalse12falsefalseUSDtruefalse{us-gaap_SegmentReportingInformationBySegmentAxis} : Walmart U.S. [Member]
2/1/2010 - 1/31/2011
USD ($)
$Duration_2_1_2010_To_1_31_2011244http://www.sec.gov/CIK0000104169duration2010-02-01T00:00:002011-01-31T00:00:00falsefalseWalmart U.S. [Member]us-gaap_SegmentReportingInformationBySegmentAxisxbrldihttp://xbrl.org/2006/xbrldiwmt_WalmartUSMemberus-gaap_SegmentReportingInformationBySegmentAxisexplicitMemberUnit12Standardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$13falsefalseUSDtruefalse{us-gaap_SegmentReportingInformationBySegmentAxis} : Walmart U.S. [Member]
2/1/2009 - 1/31/2010
USD ($)
$Duration_2_1_2009_To_1_31_20104http://www.sec.gov/CIK0000104169duration2009-02-01T00:00:002010-01-31T00:00:00falsefalseWalmart U.S. [Member]us-gaap_SegmentReportingInformationBySegmentAxisxbrldihttp://xbrl.org/2006/xbrldiwmt_WalmartUSMemberus-gaap_SegmentReportingInformationBySegmentAxisexplicitMemberUnit12Standardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$14falsefalseUSDtruefalse{us-gaap_SegmentReportingInformationBySegmentAxis} : Walmart U.S. [Member]
2/1/2008 - 1/31/2009
USD ($)
$Duration_2_1_2008_To_1_31_200945http://www.sec.gov/CIK0000104169duration2008-02-01T00:00:002009-01-31T00:00:00falsefalseWalmart U.S. [Member]us-gaap_SegmentReportingInformationBySegmentAxisxbrldihttp://xbrl.org/2006/xbrldiwmt_WalmartUSMemberus-gaap_SegmentReportingInformationBySegmentAxisexplicitMemberUnit12Standardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$OthernaNo definition available.No authoritative reference available.falsefalse9false0us-gaap_SalesRevenueNetus-gaaptruecreditdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00[1]falsefalsefalsefalsefalse5falsefalsefalse00[1]falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00[1]falsefalsefalsefalsefalse9truefalsefalse260261000000260261falsefalsefalsefalsefalse10truefalsefalse259919000000259919[2]falsefalsefalsefalsefalse11truefalsefalse256970000000256970[2]falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryTotal revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts.Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 03
-Paragraph 1
-Article 5
falsefalse10false0us-gaap_OperatingIncomeLossus-gaaptruecreditdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse1991400000019914falsefalsefalsefalsefalse10truefalsefalse1931300000019313[2]falsefalsefalsefalsefalse11truefalsefalse1831000000018310[2]falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe net result for the period of deducting operating expenses from operating revenues.No authoritative reference available.falsefalse11false0wmt_TotalAssetsOfContinuingOperationswmtfalsedebitdurationTotal assets of continuing operationsfalsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse8972500000089725falsefalsefalsefalsefalse10truefalsefalse8423800000084238[2]falsefalsefalsefalsefalse11truefalsefalse8436200000084362[2]falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryTotal assets of continuing operationsNo authoritative reference available.falsefalse12false0us-gaap_DepreciationAndAmortizationus-gaaptruedebitdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse46190000004619falsefalsefalsefalsefalse10truefalsefalse43520000004352falsefalsefalsefalsefalse11truefalsefalse41480000004148falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe current period expense charged against earnings on long-lived, physical assets not used in production, and which are not intended for resale, to allocate or recognize the cost of such assets over their useful lives; or to record the reduction in book value of an intangible asset over the benefit period of such asset; or to reflect consumption during the period of an asset that is not used in production.Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 95
-Paragraph 28
Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Accounting Principles Board Opinion (APB)
-Number 12
-Paragraph 5
falsefalse13false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://www.walmartstores.com/taxonomy/role/disclosurenote16segmentsreconciliationtoconsolidatedincomefromcontinuingoperationsbeforeincometaxesdetails1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9falsefalsefalse00falsefalsefalsefalsefalse10falsefalsefalse00falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalse15falsefalseUSDtruefalse{us-gaap_SegmentReportingInformationBySegmentAxis} : Walmart International [Member]
2/1/2010 - 1/31/2011
USD ($)
$Duration_2_1_2010_To_1_31_2011243http://www.sec.gov/CIK0000104169duration2010-02-01T00:00:002011-01-31T00:00:00falsefalseWalmart International [Member]us-gaap_SegmentReportingInformationBySegmentAxisxbrldihttp://xbrl.org/2006/xbrldiwmt_WalmartInternationalMemberus-gaap_SegmentReportingInformationBySegmentAxisexplicitMemberUnit12Standardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$16falsefalseUSDtruefalse{us-gaap_SegmentReportingInformationBySegmentAxis} : Walmart International [Member]
2/1/2009 - 1/31/2010
USD ($)
$Duration_2_1_2009_To_1_31_20105http://www.sec.gov/CIK0000104169duration2009-02-01T00:00:002010-01-31T00:00:00falsefalseWalmart International [Member]us-gaap_SegmentReportingInformationBySegmentAxisxbrldihttp://xbrl.org/2006/xbrldiwmt_WalmartInternationalMemberus-gaap_SegmentReportingInformationBySegmentAxisexplicitMemberUnit12Standardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$17falsefalseUSDtruefalse{us-gaap_SegmentReportingInformationBySegmentAxis} : Walmart International [Member]
2/1/2008 - 1/31/2009
USD ($)
$Duration_2_1_2008_To_1_31_200944http://www.sec.gov/CIK0000104169duration2008-02-01T00:00:002009-01-31T00:00:00falsefalseWalmart International [Member]us-gaap_SegmentReportingInformationBySegmentAxisxbrldihttp://xbrl.org/2006/xbrldiwmt_WalmartInternationalMemberus-gaap_SegmentReportingInformationBySegmentAxisexplicitMemberUnit12Standardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$OthernaNo definition available.No authoritative reference available.falsefalse14false0us-gaap_SalesRevenueNetus-gaaptruecreditdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00[1]falsefalsefalsefalsefalse5falsefalsefalse00[1]falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00[1]falsefalsefalsefalsefalse9truefalsefalse109232000000109232falsefalsefalsefalsefalse10truefalsefalse9740700000097407[2]falsefalsefalsefalsefalse11truefalsefalse9614100000096141[2]falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryTotal revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts.Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 03
-Paragraph 1
-Article 5
falsefalse15false0us-gaap_OperatingIncomeLossus-gaaptruecreditdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse56060000005606falsefalsefalsefalsefalse10truefalsefalse49010000004901[2]falsefalsefalsefalsefalse11truefalsefalse48320000004832[2]falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe net result for the period of deducting operating expenses from operating revenues.No authoritative reference available.falsefalse16false0wmt_TotalAssetsOfContinuingOperationswmtfalsedebitdurationTotal assets of continuing operationsfalsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse7202100000072021falsefalsefalsefalsefalse10truefalsefalse6651500000066515[2]falsefalsefalsefalsefalse11truefalsefalse5907100000059071[2]falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryTotal assets of continuing operationsNo authoritative reference available.falsefalse17false0us-gaap_DepreciationAndAmortizationus-gaaptruedebitdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse21840000002184falsefalsefalsefalsefalse10truefalsefalse19790000001979falsefalsefalsefalsefalse11truefalsefalse18450000001845falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe current period expense charged against earnings on long-lived, physical assets not used in production, and which are not intended for resale, to allocate or recognize the cost of such assets over their useful lives; or to record the reduction in book value of an intangible asset over the benefit period of such asset; or to reflect consumption during the period of an asset that is not used in production.Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 95
-Paragraph 28
Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Accounting Principles Board Opinion (APB)
-Number 12
-Paragraph 5
falsefalse18false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://www.walmartstores.com/taxonomy/role/disclosurenote16segmentsreconciliationtoconsolidatedincomefromcontinuingoperationsbeforeincometaxesdetails1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9falsefalsefalse00falsefalsefalsefalsefalse10falsefalsefalse00falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalse18falsefalseUSDtruefalse{us-gaap_SegmentReportingInformationBySegmentAxis} : Other Operating Income [Member]
2/1/2010 - 1/31/2011
USD ($)
$Duration_2_1_2010_To_1_31_201124http://www.sec.gov/CIK0000104169duration2010-02-01T00:00:002011-01-31T00:00:00falsefalseOther Operating Income [Member]us-gaap_SegmentReportingInformationBySegmentAxisxbrldihttp://xbrl.org/2006/xbrldiwmt_OtherOperatingIncomeMemberus-gaap_SegmentReportingInformationBySegmentAxisexplicitMemberUnit12Standardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$19falsefalseUSDtruefalse{us-gaap_SegmentReportingInformationBySegmentAxis} : Other Operating Income [Member]
2/1/2009 - 1/31/2010
USD ($)
$Duration_2_1_2009_To_1_31_201042http://www.sec.gov/CIK0000104169duration2009-02-01T00:00:002010-01-31T00:00:00falsefalseOther Operating Income [Member]us-gaap_SegmentReportingInformationBySegmentAxisxbrldihttp://xbrl.org/2006/xbrldiwmt_OtherOperatingIncomeMemberus-gaap_SegmentReportingInformationBySegmentAxisexplicitMemberUnit12Standardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$20falsefalseUSDtruefalse{us-gaap_SegmentReportingInformationBySegmentAxis} : Other Operating Income [Member]
2/1/2008 - 1/31/2009
USD ($)
$Duration_2_1_2008_To_1_31_200942http://www.sec.gov/CIK0000104169duration2008-02-01T00:00:002009-01-31T00:00:00falsefalseOther Operating Income [Member]us-gaap_SegmentReportingInformationBySegmentAxisxbrldihttp://xbrl.org/2006/xbrldiwmt_OtherOperatingIncomeMemberus-gaap_SegmentReportingInformationBySegmentAxisexplicitMemberUnit12Standardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$OthernaNo definition available.No authoritative reference available.falsefalse19false0us-gaap_SalesRevenueNetus-gaaptruecreditdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00[1]falsefalsefalsefalsefalse5falsefalsefalse00[1]falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00[1]falsefalsefalsefalsefalse9falsefalsefalse00 falsefalsefalsefalsefalse10falsefalsefalse00 [2]falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryTotal revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts.Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 03
-Paragraph 1
-Article 5
falsefalse20false0us-gaap_OperatingIncomeLossus-gaaptruecreditdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse-1689000000-1689falsefalsefalsefalsefalse10truefalsefalse-1727000000-1727[2]falsefalsefalsefalsefalse11truefalsefalse-2024000000-2024[2]falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe net result for the period of deducting operating expenses from operating revenues.No authoritative reference available.falsefalse21false0wmt_TotalAssetsOfContinuingOperationswmtfalsedebitdurationTotal assets of continuing operationsfalsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse62550000006255falsefalsefalsefalsefalse10truefalsefalse74640000007464[2]falsefalsefalsefalsefalse11truefalsefalse70800000007080[2]falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryTotal assets of continuing operationsNo authoritative reference available.falsefalse22false0us-gaap_DepreciationAndAmortizationus-gaaptruedebitdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse244000000244falsefalsefalsefalsefalse10truefalsefalse268000000268falsefalsefalsefalsefalse11truefalsefalse203000000203falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe current period expense charged against earnings on long-lived, physical assets not used in production, and which are not intended for resale, to allocate or recognize the cost of such assets over their useful lives; or to record the reduction in book value of an intangible asset over the benefit period of such asset; or to reflect consumption during the period of an asset that is not used in production.Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 95
-Paragraph 28
Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Accounting Principles Board Opinion (APB)
-Number 12
-Paragraph 5
falsefalse23false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://www.walmartstores.com/taxonomy/role/disclosurenote16segmentsreconciliationtoconsolidatedincomefromcontinuingoperationsbeforeincometaxesdetails1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9falsefalsefalse00falsefalsefalsefalsefalse10falsefalsefalse00falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalse21falsefalseUSDtruefalse{us-gaap_SegmentReportingInformationBySegmentAxis} : Sam's Club [Member]
2/1/2010 - 1/31/2011
USD ($)
$Duration_2_1_2010_To_1_31_2011242http://www.sec.gov/CIK0000104169duration2010-02-01T00:00:002011-01-31T00:00:00falsefalseSam's Club [Member]us-gaap_SegmentReportingInformationBySegmentAxisxbrldihttp://xbrl.org/2006/xbrldiwmt_SamsClubMemberus-gaap_SegmentReportingInformationBySegmentAxisexplicitMemberUnit12Standardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$22falsefalseUSDtruefalse{us-gaap_SegmentReportingInformationBySegmentAxis} : Sam's Club [Member]
2/1/2009 - 1/31/2010
USD ($)
$Duration_2_1_2009_To_1_31_20103http://www.sec.gov/CIK0000104169duration2009-02-01T00:00:002010-01-31T00:00:00falsefalseSam's Club [Member]us-gaap_SegmentReportingInformationBySegmentAxisxbrldihttp://xbrl.org/2006/xbrldiwmt_SamsClubMemberus-gaap_SegmentReportingInformationBySegmentAxisexplicitMemberUnit15Standardhttp://www.xbrl.org/2003/instancepurexbrli0Unit12Standardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$23falsefalseUSDtruefalse{us-gaap_SegmentReportingInformationBySegmentAxis} : Sam's Club [Member]
2/1/2008 - 1/31/2009
USD ($)
$Duration_2_1_2008_To_1_31_200943http://www.sec.gov/CIK0000104169duration2008-02-01T00:00:002009-01-31T00:00:00falsefalseSam's Club [Member]us-gaap_SegmentReportingInformationBySegmentAxisxbrldihttp://xbrl.org/2006/xbrldiwmt_SamsClubMemberus-gaap_SegmentReportingInformationBySegmentAxisexplicitMemberUnit12Standardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$OthernaNo definition available.No authoritative reference available.falsefalse24false0us-gaap_SalesRevenueNetus-gaaptruecreditdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00[1]falsefalsefalsefalsefalse5falsefalsefalse00[1]falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00[1]falsefalsefalsefalsefalse9truefalsefalse4945900000049459falsefalsefalsefalsefalse10truefalsefalse4780600000047806[2]falsefalsefalsefalsefalse11truefalsefalse4797600000047976[2]falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryTotal revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts.Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 03
-Paragraph 1
-Article 5
falsefalse25false0us-gaap_OperatingIncomeLossus-gaaptruecreditdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse17110000001711falsefalsefalsefalsefalse10truefalsefalse15150000001515[2]falsefalsefalsefalsefalse11truefalsefalse16490000001649[2]falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe net result for the period of deducting operating expenses from operating revenues.No authoritative reference available.falsefalse26false0wmt_TotalAssetsOfContinuingOperationswmtfalsedebitdurationTotal assets of continuing operationsfalsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse1253100000012531falsefalsefalsefalsefalse10truefalsefalse1205000000012050[2]falsefalsefalsefalsefalse11truefalsefalse1238800000012388[2]falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryTotal assets of continuing operationsNo authoritative reference available.falsefalse27false0us-gaap_DepreciationAndAmortizationus-gaaptruedebitdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse594000000594falsetruefalsefalsefalse10truefalsefalse558000000558falsetruefalsefalsefalse11truefalsefalse543000000543falsetruefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe current period expense charged against earnings on long-lived, physical assets not used in production, and which are not intended for resale, to allocate or recognize the cost of such assets over their useful lives; or to record the reduction in book value of an intangible asset over the benefit period of such asset; or to reflect consumption during the period of an asset that is not used in production.Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 95
-Paragraph 28
Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Accounting Principles Board Opinion (APB)
-Number 12
-Paragraph 5
falsefalse1
Effective May 1, 2010, the Company implemented a new financial system for its operations in the United States, Canada and Puerto Rico. Concurrent with this implementation and the increased system capabilities, the Company changed the level at which it applies the retail method of accounting for inventory in these operations from 13 divisions to 49 departments. The Company believes the change is preferable because applying the retail method of accounting for inventory at the departmental level better segregates merchandise with similar cost-to-retail ratios and turnover, as well as providing a more accurate cost of goods sold and ending inventory value at the lower of cost or market for each reporting period. The retrospective application of this accounting change impacted both segment and consolidated operating income, as well as consolidated net income for all comparable periods presented. 2
As Adjusted 3As Adjusted1126Note 16. Segments (Reconciliation to Consolidated Income from Continuing Operations Before Income Taxes) (Details) (USD $)MillionsUnKnownUnKnownUnKnownfalsetrue
