Debt and Equity Securities, FV-NI [Line Items] Debt and Equity Securities, FV-NI [Line Items] Award Timing Predetermined Award Timing Predetermined [Flag] Entity File Number Entity File Number Domestic Line of Credit Domestic Line of Credit [Member] Capital in Excess of Par Value Additional Paid-in Capital [Member] Interest rate swap Interest Rate Swap [Member] Tabular List, Table Tabular List [Table Text Block] Net income per common share: Earnings Per Share, Basic [Abstract] Long-term debt due within one year Long-term Debt, Current Maturities [Roll Forward] Long-term Debt, Current Maturities [Roll Forward] Asda Equal Value Claims Asda Equal Value Claims [Member] Asda Equal Value Claims Recent Accounting Pronouncements New Accounting Pronouncements, Policy [Policy Text Block] Accounts payable Increase (Decrease) in Accounts Payable Carrying value and fair value of long-term debt Fair Value, by Balance Sheet Grouping [Table Text Block] Interest, net Interest, net Interest Income 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Income Taxes and Other Liabilities, Noncurrent Employee Stock Option Share-Based Payment Arrangement, Option [Member] Award Timing MNPI Disclosure Award Timing MNPI Disclosure [Text Block] Interest: Interest Income (Expense), Operating [Abstract] Total Walmart shareholders' equity Equity, Attributable to Parent Fair Value by Measurement Frequency [Axis] Measurement Frequency [Axis] Repayments of long-term debt Repayments of Long-term Debt, Excluding Current Maturities, Book Value Repayments of Long-term Debt, Excluding Current Maturities, Book Value Insider Trading Policies and Procedures [Line Items] Current assets: Assets, Current [Abstract] Total liabilities, redeemable noncontrolling interest, and shareholders' equity Liabilities and Equity Recurring Fair Value, Recurring [Member] Derivative Instruments, Gain (Loss) by Hedging Relationship, by Income Statement Location, by Derivative Instrument Risk [Table] Derivative Instruments, Gain (Loss) [Table] LIABILITIES, REDEEMABLE 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Balances as of April 30, 2026 Debt, Long-Term and Short-Term, Combined Amount Forgone Recovery due to Disqualification of Tax Benefits, Amount Forgone Recovery due to Disqualification of Tax Benefits, Amount Non-Rule 10b5-1 Arrangement Terminated Non-Rule 10b5-1 Arrangement Terminated [Flag] Income before income taxes Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Entity Shell Company Entity Shell Company Schedule of Long-term Debt Instruments [Table] Schedule of Long-Term Debt Instruments [Table] Proceeds from disposal of property and equipment Proceeds from Sale of Property, Plant, and Equipment Statement of Stockholders' Equity [Abstract] Statement of Stockholders' Equity [Abstract] Operating Segments Operating Segments [Member] Statement of Cash Flows [Abstract] Statement of Cash Flows [Abstract] Long-term debt due within one year Balances as of February 1, 2026 Balances as of April 30, 2026 Long-Term Debt, Current Maturities Company Selected Measure Amount Company Selected Measure Amount Comprehensive income attributable to noncontrolling interest Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest Award Timing MNPI Considered Award Timing MNPI Considered [Flag] Comprehensive income attributable to Walmart Comprehensive Income (Loss), Net of Tax, Attributable to Parent Name Measure Name Mexico Antitrust Matter Mexico Antitrust Matter [Member] Mexico Antitrust Matter Operating lease obligations due within one year Operating Lease, Liability, Current Finance lease Finance Lease, Interest Expense Document Fiscal Period Focus Document Fiscal Period Focus Types of supplier contributions Loss Contingency, Types Of Supplier Contributions Loss Contingency, Types Of Supplier Contributions Unsecured Debt Unsecured Debt [Member] Accrued income taxes Increase (Decrease) in Accrued Taxes Payable Award Timing Method Award Timing Method [Text Block] Litigation Case [Domain] Litigation Case [Domain] Basic (in dollars per share) Income (Loss) from Continuing Operations, Per Basic Share Award Type Award Type [Axis] Hedging Relationship [Domain] Hedging Relationship [Domain] Suresh Kumar [Member] Suresh Kumar Total assets Total assets Assets Trading Symbol Trading Symbol Geographical [Domain] Geographical [Domain] Entity Address, City or Town Entity Address, City or Town Cash flows from operating activities: Cash Provided by (Used in) Operating Activity, Including Discontinued Operation [Abstract] Effect of exchange rates on cash, cash equivalents and restricted cash Effect of Exchange Rate on Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation Non-PEO NEO Average Compensation Actually Paid Amount Non-PEO NEO Average Compensation Actually Paid Amount Net change in short-term borrowings Proceeds from (Repayments of) Short-Term Debt Compensation Actually Paid vs. Other Measure Compensation Actually Paid vs. Other Measure [Text Block] Loss contingency, damages awarded, value Loss Contingency, Damages Awarded, Value Entity Emerging Growth Company Entity Emerging Growth Company Dividends declared per common share (in dollars per share) Dividends declared (in dollars per share) Common Stock, Dividends, Per Share, Declared Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year [Member] Inputs, Level 2 Fair Value, Inputs, Level 2 Fair Value, Inputs, Level 2 [Member] 4.000% Debt, Due 2029 4.000% Debt, Due 2029 [Member] 4.000% Debt, Due 2029 Insider Trading Policies and Procedures Not Adopted Insider Trading Policies and Procedures Not Adopted [Text Block] Beginning balance (in shares) Ending balance (in shares) Common Stock, Shares, Outstanding Walmart U.S. Walmart US [Member] Walmart U.S. is a business segment of Wal-Mart Stores, Inc. which includes the Company's mass merchant concept in the United States and Puerto Rico, operating under the "Walmart" or "Wal-Mart" brand, as well as walmart.com. Document Information [Table] Document Information [Table] PEO PEO [Member] Revenue by merchandise category or by market Disaggregation of Revenue [Table Text Block] Debt investments Debt Securities, Trading Interest income Investment Income, Interest Accrued income taxes Accrued Income Taxes, Current Changes in certain assets and liabilities, net of effects of acquisitions and dispositions: Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity, Increase (Decrease) in Operating Capital [Abstract] Mexico and Central America Mexico and Central America [Member] Mexico and Central America [Member] Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year [Member] Retained Earnings Retained Earnings [Member] Prepaid expenses and other Prepaid Expense and Other Assets, Current Entity Address, Postal Zip Code Entity Address, Postal Zip Code Restatement Determination Date Restatement Determination Date Cash, cash equivalents and restricted cash at beginning of year Cash, cash equivalents and restricted cash at end of period Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation Income Statement [Abstract] Income Statement [Abstract] Provision for income taxes Income Tax Expense (Benefit) 4.000% Debt Due April 2026 4.000% Debt Due April 2026 [Member] 4.000% Debt Due April 2026 1.500% Notes Due 2028 1.500% Notes Due 2028 [Member] 1.500% Notes Due 2028 Total Investments, Fair Value Disclosure Document Information [Line Items] Document Information [Line Items] Pension Adjustments Service Cost Pension Adjustments Service Cost [Member] Product and Service [Domain] Product and Service [Domain] Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] Hedging Relationship [Axis] Hedging Relationship [Axis] Diluted (in dollars per 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Type [Axis] Investment (gains) and losses, net Gain (Loss) on Investments Statement, Equity Components [Axis] Equity Components [Axis] Non-Rule 10b5-1 Arrangement Adopted Non-Rule 10b5-1 Arrangement Adopted [Flag] 4.750% Debt, Due 2036 4.750% Debt, Due 2036 [Member] 4.750% Debt, Due 2036 Number of reportable segments Number of Reportable Segments Revenue from External Customer [Line Items] Revenue from External Customer [Line Items] Other Performance Measure, Amount Other Performance Measure, Amount Entity Address, State or Province Entity Address, State or Province eCommerce eCommerce [Member] eCommerce [Member] Floating Debt, Due 2029 Floating Debt, Due 2029 [Member] Floating Debt, Due 2027 Total current liabilities Liabilities, Current Reclassifications of long-term debt Amounts Reclassified to Long-term Debt Amounts Reclassified to Long-term Debt Litigation Status [Axis] Litigation Status [Axis] Derivative Instrument Risk [Axis] Derivative Instrument [Axis] Individual: Individual [Axis] Dividends paid Payments of Ordinary Dividends, Common Stock C. Douglas McMillon [Member] C. Douglas McMillon Net cash used in investing activities Cash Provided by (Used in) Investing Activity, Including Discontinued Operation Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table [Member] Document Fiscal Year Focus Document Fiscal Year Focus Basis of Presentation Basis of Accounting, Policy [Policy Text Block] Operating lease right-of-use assets Operating Lease, Right-of-Use Asset Forgone Recovery, Explanation of Impracticability Forgone Recovery, Explanation of Impracticability [Text Block] Repayments of long-term debt Repayments of long-term debt Repayments of Long-Term Debt Entity Interactive Data Current Entity Interactive Data Current Carrying Value Reported Value Measurement [Member] Currency and other adjustments Long-Term Debt, Current Maturities, Currency And Other Adjustments Debt, Other Changes Contingencies Legal Matters and Contingencies [Text Block] 4.150% Debt, Due 2031 4.150% Debt, Due 2031 [Member] 4.150% Debt, Due 2031 Segments and Disaggregated Revenue Segment Reporting Disclosure [Text Block] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Disaggregation of Revenue [Table] Disaggregation of Revenue [Table] Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] Number of cases brought by third-party payers Number Of Cases Brought By Third-Party Payers Number Of Cases Brought By Third-Party Payers 2.550% Debt Due April 2026 2.550% Debt Due April 2026 [Member] 2.550% Debt Due April 2026 Compensation Actually Paid vs. Total Shareholder Return Compensation Actually Paid vs. Total Shareholder Return [Text Block] Operating, selling, general and administrative expenses Selling, General and Administrative Expense Other long-term assets Other Assets, Noncurrent Customer [Domain] Customer [Domain] Entity Central Index Key Entity Central Index Key PEO Name PEO Name Schedule of maturities of long-term debt Schedule of Maturities of Long-Term Debt [Table Text Block] Total revenues Revenues Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year [Member] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Outstanding Aggregate Erroneous Compensation Amount Outstanding Aggregate Erroneous Compensation Amount Revolving Credit Facility Revolving Credit Facility [Member] Arrangement Duration Trading Arrangement Duration Schedule of Segment Reporting Information, by Segment [Table] Schedule of Segment Reporting Information, by Segment [Table] Segments [Axis] Segments [Axis] Number of putative class actions Number Of Putative Class Actions Number Of Putative Class Actions Exercise Price Award Exercise Price Entity Filer Category Entity Filer Category Local Phone Number Local Phone Number Class of Stock [Domain] Class of Stock [Domain] Additional 402(v) Disclosure Additional 402(v) Disclosure [Text Block] Other investing activities Payment for (Proceeds from) Other Investing Activity Purchase of Company stock (in shares) Stock Repurchased and Retired During Period, Shares ASSETS Assets [Abstract] Long-term debt Balances as of February 1, 2026 Balances as of April 30, 2026 Long-Term Debt, Excluding Current Maturities Credit Facility [Axis] Credit Facility [Axis] Underlying Security Market Price Change Underlying Security Market Price Change, Percent Debt Instrument [Axis] Debt Instrument [Axis] Currency and other adjustments 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Issuances [Table Text Block] Schedule of Debt Issuances [Table Text Block] Long-term operating lease obligations Operating Lease, Liability, Noncurrent Redeemable noncontrolling interest Redeemable Noncontrolling Interest, Equity, Carrying Amount Health and wellness Health and Wellness [Member] Health and Wellness [Member] Depreciation and amortization Depreciation and amortization Depreciation, Amortization and Accretion, Net Fair Value as of Grant Date Award Grant Date Fair Value Canada Opioids Class Action Complaints Canada Opioids Class Action Complaints [Member] Canada Opioids Class Action Complaints Entity Registrant Name Entity Registrant Name Supplier Financing Program Obligations Supplier Financing Program Obligations [Policy Text Block] Supplier Financing Program Obligations Stock Price or TSR Estimation Method Stock Price or TSR Estimation Method [Text Block] Changes in long-term debt Schedule of Long-Term Debt Instruments [Table Text Block] 4.875% Notes Due 2029 4.875% Notes Due 2029 [Member] 4.875% Notes Due 2029 Document Quarterly Report Document Quarterly Report Long-term debt, including amounts due within one year Long-Term Debt, Fair Value Changed Peer Group, Footnote Changed Peer Group, Footnote [Text Block] Inventories Increase (Decrease) in Retail Related Inventories Total Long-term and Short-term Debt [Roll Forward] Long-term and Short-term Debt [Roll Forward] Adjustment To PEO Compensation, Footnote Adjustment To PEO Compensation, Footnote [Text Block] Numerator Net Income (Loss), Including Portion Attributable to Noncontrolling Interest [Abstract] Title Trading Arrangement, Individual Title Peer Group Total Shareholder Return Amount Peer Group Total Shareholder Return Amount Restatement Determination Date: Restatement Determination Date [Axis] Non-PEO NEO Non-PEO NEO [Member] Other financing activities Proceeds from (Payment for) Other Financing Activity Debt Interest Expense, Debt Damages suspended Loss Contingency, Damages Suspended, Value Loss Contingency, Damages Suspended, Value Name Trading Arrangement, Individual Name All Award Types Award Type [Domain] Proceeds from issuance of long-term debt Proceeds From Long-term Debt, Book Value, Excluding Current Maturities Proceeds From Long-term Debt, Book Value, Excluding Current Maturities Nonredeemable noncontrolling interest Equity, Attributable to Noncontrolling Interest Equity Awards Adjustments Equity Awards Adjustments [Member] Other operating activities Other Noncash Income (Expense) Pension Benefits Adjustments, Footnote Pension Benefits Adjustments, Footnote [Text Block] Disaggregation of Revenue [Line Items] Disaggregation of Revenue [Line Items] Membership and other income Other Income Canada CANADA Receivables, net Increase (Decrease) in Accounts and Other Receivables Compensation Amount Outstanding Recovery Compensation Amount Principal Amount Debt Instrument, Face Amount Reclassifications of long-term debt Amounts Reclassified between Long-term Debt Due Within One Year and Long-term Debt, Net Amounts Reclassified between Long-term Debt Due Within One Year and Long-term Debt, Net Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Statement of Comprehensive Income [Abstract] Statement of Comprehensive Income [Abstract] Recovery of Erroneously Awarded Compensation Disclosure [Line Items] Fair Value Estimate of Fair Value Measurement [Member] China CHINA MNPI Disclosure Timed for Compensation Value MNPI Disclosure Timed for Compensation Value [Flag] Name Awards Close in Time to MNPI Disclosures, Individual Name Denominator Weighted Average Number of Shares Outstanding Reconciliation [Abstract] Aggregate Erroneous Compensation Not Yet Determined Aggregate Erroneous Compensation Not Yet Determined [Text Block] Other comprehensive (income) loss attributable to noncontrolling interest Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Noncontrolling Interest Revenues: Revenues [Abstract] Accumulated other comprehensive loss Accumulated Other Comprehensive Income (Loss), Net of Tax Litigation Case [Axis] Litigation Case [Axis] Other Other [Member] Other [Member] Segments [Domain] Segments [Domain] Aggregate Pension Adjustments Service Cost Aggregate Pension Adjustments Service Cost [Member] Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV [Domain] Walmart International Walmart International Walmart International [Member] Walmart International is a business segment of Wal-Mart Stores, Inc. which includes the Company's operations outside the 50 United States and Puerto Rico Inventories Inventory, Net Company Selected Measure Name Company Selected Measure Name Fair Value Measurement [Domain] Fair Value Measurement [Domain] Short-term Borrowings and Long-term Debt Debt Disclosure [Text Block] Aggregate Available Trading Arrangement, Securities Aggregate Available Amount Accounts payable Accounts Payable, Current Stock Appreciation Rights (SARs) Stock Appreciation Rights (SARs) [Member] 5.250% Notes Due 2035 5.250% Notes Due 2035 [Member] 5.250% Notes Due 2035 All Executive Categories All Executive Categories [Member] Common stock Common Stock, Value, Issued Finance lease right-of-use assets, net Finance Lease, Right-of-Use Asset, after Accumulated Amortization Diluted (shares) Weighted-average common shares outstanding, diluted (in shares) Weighted Average Number of Shares Outstanding, Diluted Corporate and support Corporate And Reconciling Items [Member] Corporate And Reconciling Items Commitments and contingencies Commitments and Contingencies Non-GAAP Measure Description Non-GAAP Measure Description [Text Block] Comprehensive income, net of income taxes Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest Entity Small Business Entity Small Business Number of current and former employees who brought claims Loss Contingency, Number Of Current And Former Employees Who Brought Claims Loss Contingency, Number Of Current And Former Employees Who Brought Claims Nonredeemable Noncontrolling Interest Noncontrolling Interest [Member] Document Transition Report Document Transition Report Number of phases Loss Contingency, Number Of Phases Loss Contingency, Number Of Phases 1.050% Notes Due 2026 1.050% Notes Due 2026 [Member] 1.050% Notes Due 2026 Number of cases brought by hospitals Number Of Cases Brought By Hospitals Number Of Cases Brought By Hospitals Underlying Securities Award Underlying Securities Amount Equity Component [Domain] Equity Component [Domain] Document Period End Date Document Period End Date PEO Actually Paid Compensation Amount PEO Actually Paid Compensation Amount Number of phases complete Loss Contingency, Number Of Phases Complete Loss Contingency, Number Of Phases Complete Awards Close in Time to MNPI Disclosures, Table Awards Close in Time to MNPI Disclosures [Table Text Block] Total shareholders' equity Beginning balance Ending balance Equity, Including Portion Attributable to Noncontrolling Interest Fuel-related expenses Cost Of Revenue & Selling General And Administrative Expenses For Fuel Sales Cost Of Revenue & Selling General And Administrative Expenses For Fuel Sales Document Type Document Type Inputs, Level 3 Fair Value, Inputs, Level 3 [Member] Net Income Per Common Share Earnings Per Share [Text Block] Name Outstanding Recovery, Individual Name Loss Contingencies [Table] Loss Contingencies [Table] Capital in excess of par value Additional Paid in Capital Product and Service [Axis] Product and Service [Axis] Derivative Contract Type [Domain] Derivative Contract [Domain] Net sales Net sales Revenue from Contract with Customer, Excluding Assessed Tax Litigation Status [Domain] Litigation Status [Domain] All Individuals All Individuals [Member] Long-term Debt, Type [Domain] Long-Term Debt, Type [Domain] Fair Value Disclosures [Abstract] Fair Value Disclosures [Abstract] Payments for property and equipment Payments to Acquire Property, Plant, and Equipment Name Forgone Recovery, Individual Name Total current assets Assets, Current Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested [Member] Loss contingency, accrued liabilities Loss Contingency Accrual Period to maintain certain practices and obligations Loss Contingency, Period to Maintain Certain Practices And Obligations Loss Contingency, Period to Maintain Certain Practices And Obligations Aggregate Erroneous Compensation Amount Aggregate Erroneous Compensation Amount Peer Group Issuers, Footnote Peer Group Issuers, Footnote [Text Block] Schedule of derivative instruments Schedule of Derivative Instruments [Table Text Block] Erroneous Compensation Analysis Erroneous Compensation Analysis [Text Block] Current liabilities: Liabilities, Current [Abstract] Other comprehensive income (loss) attributable to Walmart Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent Geographical [Axis] Geographical [Axis] Rule 10b5-1 Arrangement Terminated Rule 10b5-1 Arrangement Terminated [Flag] Inputs, Level 1 Fair Value, Inputs, Level 1 [Member] Accrued liabilities Increase (Decrease) in Accrued Liabilities Diluted net income per common share attributable to Walmart (in dollars per share) Earnings Per Share, Diluted Erroneously Awarded Compensation Recovery Erroneously Awarded Compensation Recovery [Table] Title of 12(b) Security Title of 12(b) Security Earnings Per Share [Abstract] Earnings Per Share [Abstract] Consolidation Items [Domain] Consolidation Items [Domain] Number of former employees who brought complaints Loss Contingency, Number Of Former Employees Who Brought Complaints Loss Contingency, Number Of Former Employees Who Brought Complaints Other (gains) and losses Nonoperating Income (Expense) 4.875% Notes Due 2039 4.875% Notes Due 2039 [Member] 4.875% Notes Due 2039 Purchase of Company stock Stock Repurchased and Retired During Period, Value Other Stockholders' Equity, Other Sam's Club U.S. Sam's Club US [Member] Sam's Club is a business segment of Wal-Mart Stores, Inc. which includes the Company's warehouse and membership clubs in the United States and Puerto Rico, as well as samsclub.com. Award Timing Disclosures [Line Items] Measurement Frequency [Domain] Measurement Frequency [Domain] 5.750% Notes Due 2030 5.750% Notes Due 2030 [Member] 5.750% Notes Due 2030 Consolidated net income attributable to Walmart Consolidated net income attributable to Walmart Net Income (Loss) Attributable to Parent Expiration Date Trading Arrangement Expiration Date Pending Litigation Pending Litigation [Member] Shareholders' equity: Equity, Including Portion Attributable to Noncontrolling Interest [Abstract] Equity and other securities, change in fair value, increase (decrease) Equity Securities, FV-NI, Unrealized Gain (Loss) Property and equipment, net Property, Plant and Equipment, Net Segment Reporting Information [Line Items] Segment Reporting Information [Line Items] Purchase of Company stock Payments for Repurchase of Common Stock Adoption Date Trading Arrangement Adoption Date Compensation Actually Paid vs. Net Income Compensation Actually Paid vs. Net Income [Text Block] Entity Current Reporting Status Entity Current Reporting Status Customer [Axis] Customer [Axis] Awards Close in Time to MNPI Disclosures Awards Close in Time to MNPI Disclosures [Table] Revenue from External Customers by Products and Services [Table] Segment Reporting, Revenue from External Customer, Product and Service [Table] Operating income Operating Income (Loss) Retained earnings Retained Earnings (Accumulated Deficit) Cross-currency swaps Cross Currency Interest Rate Contract [Member] Reclassifications of long-term debt Amounts Reclassified to Long-term Debt, Current Maturities Amounts Reclassified to Long-term Debt, Current Maturities David Guggina [Member] David Guggina Statement of Financial Position [Abstract] Statement of Financial Position [Abstract] Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested [Member] Executive Category: Executive Category [Axis] Repayments of long-term debt Repayments of Long-term Debt, Book Value, Current Maturities Repayments of Long-term Debt, Book Value, Current Maturities Finance lease obligations due within one year Finance Lease, Liability, Current Proceeds from issuance of long-term debt Proceeds from issuance of long-term debt Proceeds from Issuance of Long-Term Debt Current Fiscal Year End Date Current Fiscal Year End Date Class of Stock [Axis] Class of Stock [Axis] Aggregate Grant Date Fair Value of Equity Award Amounts Reported in Summary Compensation Table Aggregate Grant Date Fair Value of Equity Award Amounts Reported in Summary Compensation Table [Member] Statement [Table] Statement [Table] Long-term debt Long-term Debt, Excluding Current Maturities [Roll Forward] Long-term Debt, Excluding Current Maturities [Roll Forward] General merchandise General Merchandise [Member] General Merchandise [Member] Adjustments to reconcile consolidated net income to net cash provided by operating activities: Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity [Abstract] Cash flows from financing activities: Cash Provided by (Used in) Financing Activity, Including Discontinued Operation [Abstract] Net income per common share attributable to Walmart Earnings Per Share, Basic, Other Disclosure [Abstract] Equity Awards Adjustments, Excluding Value Reported in Compensation Table Equity Awards Adjustments, Excluding Value Reported in the Compensation Table [Member] Segment Reporting Information, Profit (Loss) [Abstract] Segment Reporting Information, Profit (Loss) [Abstract] Receivables, net Receivables, Net, Current Equity investments Equity Securities, FV-NI, Current Long-term finance lease obligations Finance Lease, Liability, Noncurrent Summary of Significant Accounting Policies Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] Weighted-average common shares outstanding: Weighted Average Number of Shares Outstanding, Diluted [Abstract] All Adjustments to Compensation All Adjustments to Compensation [Member] Fair Value, by Balance Sheet Grouping [Table] Fair Value, by Balance Sheet Grouping [Table] Amendment Flag Amendment Flag Termination Date Trading Arrangement Termination Date Net cash provided by financing activities Cash Provided by (Used in) Financing Activity, Including Discontinued Operation Insider Trading Policies and Procedures Adopted Insider Trading Policies and Procedures Adopted [Flag] Fuel and other Fuel and Other [Member] Fuel and Other Measure: Measure [Axis] 4.450% Debt, Due 2033 4.450% Debt, Due 2033 [Member] 4.450% Debt, Due 2033 Senior Unsecured Notes Senior Unsecured Notes [Member] Senior Unsecured Notes Daniel J. Bartlett [Member] Daniel J. Bartlett Fair Value Derivative, Fair Value, Net Basic (shares) Weighted-average common shares outstanding, basic (in shares) Weighted Average Number of Shares Outstanding, Basic Schedule of calculation of numerator and denominator in earnings per share Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Cost of sales Cost of Revenue Pay vs Performance Disclosure, Table Pay vs Performance [Table Text Block] Outstanding payment obligation Supplier Finance Program, Obligation Debt Disclosure [Abstract] Debt Disclosure [Abstract] Forgone Recovery due to Violation of Home Country Law, Amount Forgone Recovery due to Violation of Home Country Law, Amount Entity Tax Identification Number Entity Tax Identification Number Costs and expenses: Costs and Expenses [Abstract] Dividends declared Dividends, Cash Forgone Recovery due to Expense of Enforcement, Amount Forgone Recovery due to Expense of Enforcement, Amount 1.800% Notes Due 2031 1.800% Notes Due 2031 [Member] 1.800% Notes Due 2031 Use of Estimates Use of Estimates, Policy [Policy Text Block] Dividends payable Dividends Payable, Current Trading Arrangement: Trading Arrangement [Axis] Total Shareholder Return Amount Total Shareholder Return Amount Loss Contingencies [Line Items] Loss Contingencies [Line Items] Fair value of investments Fair Value Measurements, Recurring and Nonrecurring [Table Text Block] Insider Trading Arrangements [Line Items] Security Exchange Name Security Exchange Name Grocery Grocery [Member] Grocery [Member] Committed line of credit Line of Credit Facility, Maximum Borrowing Capacity Five Year Credit Facility Five Year Credit Facility [Member] Five Year Credit Facility [Member] Pension Adjustments Prior Service Cost Pension Adjustments Prior Service Cost [Member] Material Terms of Trading Arrangement Material Terms of Trading Arrangement [Text Block] Other (in shares) Stockholders' Equity, Other Shares Statement [Line Items] Statement [Line Items] Consolidation Items [Axis] Consolidation Items [Axis] Rule 10b5-1 Arrangement Adopted Rule 10b5-1 Arrangement Adopted [Flag] Cash and cash equivalents Cash and Cash Equivalent Deferred income taxes Increase (Decrease) in Deferred Income Taxes Common Stock Common Stock [Member] Consolidated net income Net Income (Loss), Including Portion Attributable to Nonredeemable Noncontrolling Interest Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Non-NEOs Non-NEOs [Member] Net increase (decrease) in cash, cash equivalents and restricted cash Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Period Increase (Decrease), Including Exchange Rate Effect and Discontinued Operation Dilutive impact of share-based awards (in shares) Weighted Average Number of Shares Outstanding, Diluted, Adjustment