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[Member] Common Stock, Dividends, Per Share, Declared Common Stock, Dividends, Per Share, Declared Entity File Number Entity File Number Rule 10b5-1 Arrangement Adopted Rule 10b5-1 Arrangement Adopted [Flag] Maturities of Available for Sale and Held to Maturity Securities Investments Classified by Contractual Maturity Date [Table Text Block] Recovery of Erroneously Awarded Compensation Disclosure [Line Items] Common stock, shares issued Common Stock, Shares, Issued Measure: Measure [Axis] Federal [Abstract] Federal Income Tax Expense (Benefit), Continuing Operations [Abstract] SPAIN SPAIN Equity Components [Axis] Equity Components [Axis] Product and Service [Domain] Product and Service [Domain] Income Tax Paid, after Refund Received, Total Income Tax Paid, after Refund Received CALIFORNIA CALIFORNIA Disaggregation of Revenue [Table] Disaggregation of Revenue [Table] Entity Interactive Data Current Entity Interactive Data Current Current finance lease liabilities Finance Lease, Liability, Current Number of warehouses operated Number of Stores Deferred Tax Liabilities Deferred Income Tax Liabilities, Net Compensation Actually Paid vs. Other Measure Compensation Actually Paid vs. Other Measure [Text Block] Due after one year through five years Debt Securities, Available-for-Sale, Amortized Cost, Maturity, Allocated and Single Maturity Date, after Year One Through Five Defined contribution plan, cost recognized Defined Contribution Plan, Cost Entity Small Business Entity Small Business 0.920% Senior Notes Due July 2024 Senior Notes Zero Point Nine Two Percent Due July Twenty Twenty Four [Member] Senior Notes Zero Point Nine Two Percent Due July Twenty Twenty Four COMPREHENSIVE INCOME Comprehensive Income (Loss), Net of Tax, Attributable to Parent Balance Sheet Location[Table] Balance Sheet Location [Table] Balance Sheet Location 2029 Lessee, Operating Lease, Liability, to be Paid, Year Three FIFO Inventory Amount FIFO Inventory Amount Termination Date Trading Arrangement Termination Date Property and Equipment, Net [Line Items] Property, Plant, and Equipment [Line Items] Effective Income Tax Rate Reconciliation [Table] Effective Income Tax Rate Reconciliation [Table] Fair Value, Recurring and Nonrecurring [Table] Fair Value, Recurring and Nonrecurring [Table] Federal taxes at statutory rate Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent Compensation Actually Paid vs. Total Shareholder Return Compensation Actually Paid vs. Total Shareholder Return [Text Block] MNPI Disclosure Timed for Compensation Value MNPI Disclosure Timed for Compensation Value [Flag] Other current liabilities Other Liabilities, Current Nontaxable or nondeductible Effective Income Tax Rate Reconciliation, Nondeductible Expense, Amount Other long-term assets Other Assets, Noncurrent 2029 Finance Lease, Liability, to be Paid, Year Three Document Type Document Type 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] Accrued member rewards Accrued Liabilities, Current Entity Public Float Entity Public Float OTHER LIABILITIES Other Liabilities [Abstract] Fair Value as of Grant Date Award Grant Date Fair Value 1.750% Senior Notes due April 2032 SeniorNotesOnePointSevenFivePercentDueAprilTwentyThirtyTwo [Member] SeniorNotesOnePointSevenFivePercentDueAprilTwentyThirtyTwo Gross decreases—tax positions in prior years Unrecognized Tax Benefits, Decrease Resulting from Prior Period Tax Positions Debt Instrument, Redemption Price, Percentage Debt Instrument, Redemption Price, Percentage Significant Accounting Policies Significant Accounting Policies [Text Block] Entity Location [Table] Entity Location [Table] Schedule of Goodwill [Table] Goodwill [Table] Pay vs Performance Disclosure, Table Pay vs Performance [Table Text Block] Stock Repurchase Program, Remaining Authorized Repurchase Amount Share Repurchase Program, Remaining Authorized, Amount Arrangement Duration Trading Arrangement Duration Summary of RSU Transactions Share-Based Compensation Arrangements by Share-Based Payment Award, Restricted Stock Units, Vested and Expected to Vest [Table Text Block] Statement of Stockholders' Equity [Abstract] Statement of Stockholders' Equity [Abstract] Proceeds from issuance of long-term debt Proceeds from Issuance of Long-Term Debt Local Phone Number Local Phone Number CANADA CANADA Total deferred tax liabilities Deferred Tax Liabilities, Gross Consolidation Items [Axis] Consolidation Items [Axis] Entity Address, Postal Zip Code Entity Address, Postal Zip Code Entity Registrant Name Entity Registrant Name Gross increases—current year tax positions Unrecognized Tax Benefits, Increase Resulting from Current Period Tax Positions INCOME BEFORE INCOME TAXES Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Insider Trading Policies and Procedures Not Adopted Insider Trading Policies and Procedures Not Adopted [Text Block] Summary Of Significant Accounting Policies [Line Items] Summary Of Significant Accounting Policies [Line Items] Summary Of Significant Accounting Policies [Line Items] COMMITMENTS AND CONTINGENCIES Commitments and Contingencies Long-term finance lease liabilities Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration] Gross property and equipment Property, Plant, and Equipment, before Accumulated Depreciation, Depletion, and Amortization Changed Peer Group, Footnote Changed Peer Group, Footnote [Text Block] 1.375% Senior Notes due June 2027 SeniorNotesOnePointThreeSevenFivePercentDueJuneTwentyTwentySeven [Member] SeniorNotesOnePointThreeSevenFivePercentDueJuneTwentyTwentySeven Equipment and fixtures Fixtures and Equipment, Gross OTHER ASSETS Other Assets [Abstract] Forgone Recovery due to Expense of Enforcement, Amount Forgone Recovery due to Expense of Enforcement, Amount Executive Category: Executive Category [Axis] CHINA CHINA Finance Lease, Right-of-Use Asset, Amortization Finance Lease, Right-of-Use Asset, Amortization Share-based compensation arrangement by share-based payment award, award vesting period Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period Equipment and Fixtures [Member] Furniture and Fixtures [Member] LIABILITIES AND EQUITY Liabilities and Equity [Abstract] AUSTRALIA AUSTRALIA Fair Value of Financial Assets and Liabilities Measured on Recurring Basis Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block] Merchandise inventories Inventory, Net Award Type [Domain] Award Type [Domain] Non-PEO NEO Average Compensation Actually Paid Amount Non-PEO NEO Average Compensation Actually Paid Amount Finance Lease, Interest Expense Finance Lease, Interest Expense Fair Value Measurement Fair Value Disclosures [Text Block] US Government Agencies Debt Securities [Member] Government and Agency Securities [Member] US Government Agencies Debt Securities [Member] SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION: Supplemental Cash Flow Information [Abstract] PEO Name PEO Name Geographical [Axis] Geographical [Axis] Lessor, Operating Lease, Payments to be Received Lessor, Operating Lease, Payment to be Received Income taxes paid, net Income Tax Paid, before Refund Received Property, Plant and Equipment, Type [Axis] Long-Lived Asset, Class [Axis] Tax credits - Research and development Effective Income Tax Rate Reconciliation, Tax Credit, Research, Percent Stock Price or TSR Estimation Method Stock Price or TSR Estimation Method [Text Block] Entity Tax Identification Number Entity Tax Identification Number Less income tax benefit Share-Based Payment Arrangement, Expense, Tax Benefit Revenue Recognition Revenue [Policy Text Block] CASH AND CASH EQUIVALENTS BEGINNING OF YEAR CASH AND CASH EQUIVALENTS END OF YEAR Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation Accounts payable Increase (Decrease) in Accounts Payable Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Aggregate Erroneous Compensation Not Yet Determined Aggregate Erroneous Compensation Not Yet Determined [Text Block] Material Terms of Trading Arrangement Material Terms of Trading Arrangement [Text Block] Non-NEOs Non-NEOs [Member] Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year [Member] ICELAND ICELAND Measurement Frequency [Domain] Measurement Frequency [Domain] Stock-based compensation Total stock-based compensation expense before income taxes Share-Based Payment Arrangement, Noncash Expense Cash dividends declared Dividends, Cash Total lease costs Lease, Cost Land Land DisclosureofSupplementalBalanceSheetInformationRelatedtoLeases DisclosureofSupplementalBalanceSheetInformationRelatedtoLeases [Table Text Block] DisclosureofSupplementalBalanceSheetInformationRelatedtoLeases Schedule of Merchandise Inventories Schedule of Inventory, Current [Table Text Block] Lessee, Operating Leases Lessee, Operating Leases [Text Block] 2027 Long-Term Debt, Maturity, Year One Long-term Debt, Type [Domain] Long-Term Debt, Type [Domain] Due after five years Debt Securities, Available-for-Sale, Amortized Cost, Maturity, Allocated and Single Maturity Date, after Year 5 Through 10 Basic Earnings Per Share, Basic Repurchases of common stock Payments for Repurchase of Common Stock Valuation allowance Valuation Allowances Tax Credit Carryforward, Valuation Allowance Total current assets Assets, Current Statistical Measurement [Axis] Statistical Measurement [Axis] Insider Trading Arrangements [Line Items] Long-term debt, excluding current portion Long-Term Debt, Excluding Current Maturities Other International Other International [Member] Other International [Member] Changes in valuation allowance Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Percent Award Type [Axis] Award Type [Axis] Document Annual Report Document Annual Report Named Executive Officers, Footnote Named Executive Officers, Footnote [Text Block] Operating lease liabilities DeferredTaxAssetsOperatingLeaseLiabilities DeferredTaxAssetsOperatingLeaseLiabilities Stock repurchase activity Class of Treasury Stock [Table Text Block] Retained earnings Retained Earnings (Accumulated Deficit) Product and Service [Axis] Product and Service [Axis] Financing lease payments and other financing activities, net Financing lease payments and other financing activities, net Financing lease payments and other financing activities, net 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] Vendor Consideration Cost of Sales, Vendor Allowances, Policy [Policy Text Block] Awards Close in Time to MNPI Disclosures Awards Close in Time to MNPI Disclosures [Table] Common Stock Common Stock [Member] Available-for-sale, recorded basis, total Available-for-sale, recorded basis, total Debt Securities, Available-for-Sale 3.000% Senior Notes due May 2027 SeniorNotesThreePercentDueMayEighteenTwentyTwentySeven[Member] [Member] SeniorNotesThreePercentDueMayEighteenTwentyTwentySeven[Member] Changes in valuation allowance Effective Income Tax Rate Reconciliation, Nondeductible Expense, Percent Operating Lease, Cost Operating Lease, Cost Compensation Actually Paid vs. Company Selected Measure Compensation Actually Paid vs. Company Selected Measure [Text Block] Cover [Abstract] Reclassification Reclassification, Comparability Adjustment [Policy Text Block] Documents Incorporated by Reference Documents Incorporated by Reference [Text Block] UNITED KINGDOM UNITED KINGDOM Derivative, Name [Domain] Derivative Contract [Domain] Receivables, Net Receivable [Policy Text Block] Equity Awards Adjustments Equity Awards Adjustments [Member] TOTAL LIABILITIES AND EQUITY Liabilities and Equity Variable Lease, Cost Variable Lease, Cost Deferred Tax Assets, Net Deferred Tax Assets, Net Employee Stock Option Share-Based Payment Arrangement, Option [Member] Segments [Axis] Segments [Axis] Additional 402(v) Disclosure Additional 402(v) Disclosure [Text Block] Plan Name [Axis] Plan Name [Axis] Income Tax Jurisdiction [Domain] Income Tax Jurisdiction [Domain] Tabular List, Table Tabular List [Table Text Block] Available for Sale and Held to Maturity Investments Unrealized Gain (Loss) on Investments [Table Text Block] Summary of Stock-Based Compensation Expense and Related Tax Benefits Share-Based Payment Arrangement, Cost by Plan [Table Text Block] Name Awards Close in Time to MNPI Disclosures, Individual Name EQUITY Equity, Including Portion Attributable to Noncontrolling Interest [Abstract] Due after five years Debt Securities, Held-to-Maturity, Amortized Cost, after Allowance for Credit Loss, Maturity, Allocated and Single Maturity Date, after Year 5 through 10 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] Forfeited Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeited in Period Property, Plant and Equipment, Type [Domain] Long-Lived Asset, Class [Domain] Fresh Foods [Member] Fresh Food [Member] Fresh Food [Member] Preferred stock, shares authorized Preferred Stock, Shares Authorized Employee stock ownership plan (ESOP) Effective Income Tax Rate Reconciliation, Deduction, Employee Stock Ownership Plan Dividend, Amount FRANCE FRANCE Receivables, net Receivables, Net, Current Property and Equipment, Net [Table] Property, Plant, and Equipment [Table] Preferred stock $.005 par value; 100,000,000 shares authorized; no shares issued and outstanding Preferred Stock, Value, Issued Adjustment to Compensation: Adjustment to Compensation [Axis] Merchandise Costs Cost of Goods and Service [Policy Text Block] Dividends Payable [Line Items] Dividends Payable [Line Items] Class of Stock [Domain] Class of Stock [Domain] Dividends Payable [Table] Dividends Payable [Table] Rule 10b5-1 Arrangement Terminated Rule 10b5-1 Arrangement Terminated [Flag] Aggregate Erroneous Compensation Amount Aggregate Erroneous Compensation Amount Operating cash flows - finance leases Finance Lease, Interest Payment on Liability Interest Interest Paid, Excluding Capitalized Interest, Operating Activity Statement of Cash Flows [Abstract] Statement of Cash Flows [Abstract] Selling, General and Administrative Expenses Selling, General and Administrative Expenses, Policy [Policy Text Block] Forward foreign exchange contracts Foreign Exchange Forward [Member] Foreign Exchange Forward [Member] Schedule of Inventory [Line Items] Inventory [Line Items] Aggregate Available Trading Arrangement, Securities Aggregate Available Amount Fair value of assets measured on recurring basis Assets, Fair Value Disclosure Short-Term Investments Investment, Policy [Policy Text Block] Income Tax Jurisdiction [Axis] Income Tax Jurisdiction [Axis] 2031 Finance Lease, Liability, to be Paid, Year Five Name Measure Name Income Taxes Income Tax Disclosure [Text Block] Minimum number of days of employment to qualify for retirement plan Minimum Number Of Days Of Employment To Qualify For Retirement Plan Minimum number of days of employment to qualify for 401(k) Retirement Plan Accounts payable Accounts Payable, Current Pay vs Performance Disclosure [Line Items] Fair Value, Measurements, Fair Value Hierarchy [Domain] Fair Value Hierarchy and NAV [Domain] Other Noncash Income (Expense) Other Noncash Income (Expense) 2031 Lessee, Operating Lease, Liability, to be Paid, Year Five MEXICO MEXICO Deferred Tax Liabilities: Components of Deferred Tax Liabilities [Abstract] Debt Instrument [Line Items] Debt Instrument [Line Items] Pay vs Performance Disclosure Pay vs Performance Disclosure [Table] Domestic Income (Loss) from Continuing Operations before Income Taxes, Domestic Additional Paid-in Capital Additional Paid-in Capital [Member] Entity Filer Category Entity Filer Category Short-term investments Total investments, recorded basis Short-Term Investments Repayments of short-term borrowings Repayments of Short-Term Debt Dividends [Axis] Dividends [Axis] Name Trading Arrangement, Individual Name Accrued liabilities and reserves Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Accrued Liabilities Cash and cash equivalents Cash and Cash Equivalent Operating lease liabilities Operating Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration] Company Selected Measure Amount Company Selected Measure Amount Canada Other Canada Other [Member] Canada Other Share-Based Compensation Arrangement by Share-Based Payment Award, Non-Option Equity Instruments, Outstanding, Number Share-Based Compensation Arrangement by Share-Based Payment Award, Non-Option Equity Instruments, Outstanding, Number Investments, Debt and Equity Securities [Abstract] Investments, Debt and Equity Securities [Abstract] Depreciation and amortization Depreciation, Depletion and Amortization Total federal Federal Income Tax Expense (Benefit), Continuing Operations Reduction in sales Reduction In Sales The entity's rewards members receive a cash back reward. These rewards are accounted for as a reduction to sales revenue for this revenue stream. Finance lease assets obtained in exchange for new or modified leases Right-of-Use Asset Obtained in Exchange for Finance Lease Liability Unrecognized tax benefits that would impact effective tax rate Unrecognized Tax Benefits that Would Impact Effective Tax Rate 2031 Long-Term Debt, Maturity, Year Five CURRENT ASSETS Assets, Current [Abstract] Operating Lease, Weighted Average Remaining Lease Term Operating Lease, Weighted Average Remaining Lease Term Non-PEO NEO Non-PEO NEO [Member] Foreign Currency Foreign Currency Transactions and Translations Policy [Policy Text Block] Entity Address, Address Line One Entity Address, Address Line One Operating lease assets obtained in exchange for new or modified leases Right-of-Use Asset Obtained in Exchange for Operating Lease Liability Vested and delivered Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value Provision for income taxes Total provision for income taxes Income Tax Expense (Benefit) Deferred Income/membership fees Deferred Tax Assets, Deferred Income Merchandise costs Cost of Product and Service Sold Award Timing Method Award Timing Method [Text Block] Net change in cash and cash equivalents Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Period Increase (Decrease), Including Exchange Rate Effect and Discontinued Operation Forgone Recovery, Explanation of Impracticability Forgone Recovery, Explanation of Impracticability [Text Block] Total net deferred tax assets Deferred Tax Assets, Net of Valuation Allowance Total deferred tax assets Deferred Tax Assets, Gross Current Operating and Finance Lease Liabilities [Abstract] Current Operating and Finance Lease Liabilities [Abstract] Current Operating and Finance Lease Liabilities KOREA KOREA, REPUBLIC OF NET INCOME NET INCOME Net Income (Loss) Attributable to Parent Long-term Debt, Type [Axis] Long-Term Debt, Type [Axis] Erroneous Compensation Analysis Erroneous Compensation Analysis [Text Block] Balance Sheet Location [Axis] Location, Statement of Financial Position, Balance [Axis] Statement [Table] Statement [Table] Restatement Determination Date: Restatement Determination Date [Axis] Certificates of Deposit [Member] Certificates of Deposit [Member] Release of vested RSUs, including tax effects Stock Issued During Period, Value, Restricted Stock Award, Gross Insurance / Self-Insurance Liabilities Self Insurance Reserve [Policy Text Block] Merchandise inventories Deferred Tax Liabilities, Inventory Leases Lessee, Leases [Policy Text Block] Membership fees Membership [Member] Membership [Member] JAPAN JAPAN Proceeds from short-term borrowings Proceeds from Short-Term Debt REVENUE Revenues [Abstract] Current Current Federal Tax Expense (Benefit) Pension Benefits Adjustments, Footnote Pension Benefits Adjustments, Footnote [Text Block]