Intangible assets subject to amortization, accumulated amortization Finite-Lived Intangible Assets, Accumulated Amortization Award Timing Predetermined Award Timing Predetermined [Flag] Indefinite-lived Intangible Assets [Axis] Indefinite-Lived Intangible Assets [Axis] Entity File Number Entity File Number Additional Paid-in Capital Additional Paid-in Capital [Member] Tax credits Effective Income Tax Rate Reconciliation, Tax Credit, Amount Tabular List, Table Tabular List [Table Text Block] The 2018 Plan The 2018 Plan [Member] Refers to the 2018 Incentive Award Plan (the "2018 Plan"). Recently Issued and Adopted Accounting Pronouncements and Policies New Accounting Pronouncements, Policy [Policy Text Block] Membership fee income Membership Deferred membership fee income Membership [Member] SOFR Secured Overnight Financing Rate (SOFR) [Member] Summary of Carrying Amount and Fair Value of Debt Fair Value, by Balance Sheet Grouping [Table Text Block] Stock-based awards Share-Based Payment Arrangement [Member] Measurement Basis [Axis] Measurement Basis [Axis] Adjustment to Compensation: Adjustment to Compensation [Axis] Related Party Transactions Related Party Transactions Disclosure [Text Block] Named Executive Officers, Footnote Named Executive Officers, Footnote [Text Block] Revenue Recognition Revenue from Contract with Customer [Text Block] NQDC Plan Nonqualified Deferred Compensation Plan [Member] Nonqualified Deferred Compensation Plan Intangible Asset, Indefinite-Lived [Table] Intangible Asset, Indefinite-Lived [Table] Common stock issued under ESPP (in shares) Stock Issued During Period, Shares, Employee Stock Purchase Plans Common stock issued under stock incentive plans (in shares) Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures 2025 grants Granted in 2025 [Member] Granted in 2025 Adjustment to Compensation, Amount Adjustment to Compensation Amount Concentration risk Concentration Risk, Percentage Unamortized original issue discount and debt issuance costs Debt issuance costs and original issue discount Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net Stock-based compensation expense Share-Based Payment Arrangement, Noncash Expense Term Four Debt Instrument, Term Four [Member] Debt Instrument, Term Four Stock options Share-Based Payment Arrangement, Option [Member] Schedule of Property, Plant and Equipment [Table] Property, Plant and Equipment [Table] Cash and Cash Equivalents Cash and Cash Equivalents, Policy [Policy Text Block] Restriction on payment of dividends, maximum net leverage ratio Debt Covenant, Restriction On Payment Of Dividends, Maximum Net Leverage Ratio Debt Covenant, Restriction On Payment Of Dividends, Maximum Net Leverage Ratio Finance lease liabilities, non-current, location Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration] Grantee Status [Domain] Grantee Status [Domain] Percent Effective Income Tax Rate Reconciliation, Percent [Abstract] Antidilutive Securities [Axis] Antidilutive Securities [Axis] Total stockholders’ equity Balance at beginning of period Balance at end of period Equity, Attributable to Parent Insider Trading Policies and Procedures [Line Items] New York NEW YORK Summary of Property and Equipment Property, Plant and Equipment [Table Text Block] Common stock, authorized (in shares) Common Stock, Shares Authorized Interest rate at end of period Line of Credit Facility, Interest Rate at Period End Concentration Risk Concentration Risk, Credit Risk, Policy [Policy Text Block] State State and Local Jurisdiction [Member] Cover [Abstract] Cover [Abstract] Portion at Fair Value Measurement Portion at Fair Value Measurement [Member] Maximum Maximum [Member] Exercisable, end of period (in usd per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Weighted Average Exercise Price Intangible assets useful life Finite-Lived Intangible Asset, Useful Life Self insurance reserve, per occurrence insured amount Self Insurance Reserve, Per Occurrence Insured Amount Represents sale insurance reserve per occurrence insured amount. Unrecognized tax benefits, accrued interest Unrecognized Tax Benefits, Interest on Income Taxes Accrued Total Finite-Lived Intangible Assets, Net Restricted Stock Restricted Stock [Member] Non-PEO NEO Average Total Compensation Amount Non-PEO NEO Average Total Compensation Amount Debt Instrument [Line Items] Debt Instrument [Line Items] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-Based Compensation Arrangements by Share-Based Payment Award [Table] Adjustment to Non-PEO NEO Compensation Footnote Adjustment to Non-PEO NEO Compensation Footnote [Text Block] Restriction on payment of dividends, percentage of net proceeds from stock offering (as a percent) Debt Covenant, Restriction On Payment Of Dividends, Percentage Of Net Proceeds From Stock Offering Debt Covenant, Restriction On Payment Of Dividends, Percentage Of Net Proceeds From Stock Offering Retirement Benefits [Abstract] 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 from continuing operations 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] Workers’ Compensation and General Liability Self-insurance Reserves Self Insurance Reserve [Policy Text Block] Statement of Stockholders' Equity [Abstract] Statement of Stockholders' Equity [Abstract] Net leverage ratio Debt Instrument, Covenant, Net Leverage Ratio Debt Instrument, Covenant, Net Leverage Ratio Summary of Income Taxes Paid, Net of Refunds Received Schedule of Cash Flow, Supplemental Disclosures [Table Text Block] Award Timing MNPI Considered Award Timing MNPI Considered [Flag] Asset Retirement Obligations Asset Retirement Obligation [Policy Text Block] Treasury Shares and Share Repurchase Programs Treasury Stock [Text Block] Income from continuing operations Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent Letter of Credit Letter of Credit [Member] Perishables, Grocery, and Sundries Perishables, Grocery, And Sundries [Member] Grocery includes the legacy perishables, edible grocery and non-edible grocery division. Current portion of operating lease liabilities Operating lease liabilities Operating Lease, Liability, Current Nontaxable and nondeductible items, net Effective Income Tax Rate Reconciliation, Nondeductible Expense, Percent [Abstract] Interest on lease liabilities Finance Lease, Interest Expense Restriction on payment of dividends, availability threshold percentage (as a percent) Debt Covenant, Restriction On Payment Of Dividends, Availability Threshold Percentage Debt Covenant, Restriction On Payment Of Dividends, Availability Threshold Percentage Software and Software Development Costs Software and Software Development Costs [Member] Document Fiscal Period Focus Document Fiscal Period Focus Accounts Receivable Receivable [Policy Text Block] Award Timing Method Award Timing Method [Text Block] Long-term: Contract with Customer, Liability, Noncurrent Award Type [Axis] Award Type [Axis] Parent Company Parent Company [Member] Stock-based Compensation Share-Based Payment Arrangement [Policy Text Block] Trading Symbol Trading Symbol 2029 Lessee, Operating Lease, Liability, to be Paid, Year Four Summary of Intangible Assets Schedule of Intangible Assets and Goodwill [Table Text Block] Accrued expenses and other current liabilities Total accrued expenses and other current liabilities Accrued Liabilities and Other Liabilities Entity Address, City or Town Entity Address, City or Town Weighted-average discount rate - finance leases Finance Lease, Weighted Average Discount Rate, Percent Asset Retirement Obligation, Roll Forward Analysis [Roll Forward] Asset Retirement Obligation, Roll Forward Analysis [Roll Forward] Non-PEO NEO Average Compensation Actually Paid Amount Non-PEO NEO Average Compensation Actually Paid Amount Restricted Stock Units Restricted Stock Units (RSUs) [Member] Statement of Income Location, Balance [Domain] Statement of Income Location, Balance [Domain] Compensation Actually Paid vs. Other Measure Compensation Actually Paid vs. Other Measure [Text Block] Settlements Unrecognized Tax Benefits, Decrease Resulting from Settlements with Taxing Authorities Entity Emerging Growth Company Entity Emerging Growth Company 2028 Long-Term Debt, Maturity, Year Three Increase (decrease) in cash due to changes in: Increase (Decrease) in Operating Assets [Abstract] Weighted-average remaining lease term (in years) - finance leases Finance Lease, Weighted Average Remaining Lease Term Outstanding, beginning of period (in shares) Outstanding, end of period (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Number Condensed Financial Information of Registrant (Parent Company Only) Condensed Financial Information of Parent Company Only Disclosure [Text Block] Payments on revolving lines of credit Repayments of Lines of Credit 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] Insurance reserves Accrued Insurance, Current Debt costs Deferred Tax Liabilities, Deferred Expense, Debt Issuance Costs Intangible assets not subject to amortization, carrying amount Indefinite-Lived Intangible Assets (Excluding Goodwill) The 2011 Plan and 2012 Director Plan The 2011 Plan and 2012 Director Plan [Member] Information pertaining to the 2011 Plan and the 2012 Director Plan. Less: imputed interest Finance Lease, Liability, Undiscounted Excess Amount Long-term: Liabilities, Noncurrent, Lessee [Abstract] Liabilities, Noncurrent, Lessee Common stock, outstanding (in shares) Common Stock, Shares, Outstanding Summary of Disaggregation of Revenue Disaggregation of Revenue [Table Text Block] 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] Summary of Future Amortization Expense Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block] Employee Stock Purchase Plan Employee Stock Purchase Plan [Member] Refers to the Employee Stock Purchase Plan (the "ESPP"). Prepaid expenses and other current assets Prepaid Expense and Other Assets, Current Shares Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward] Effective interest rate Debt Instrument, Interest Rate, Effective Percentage Entity Address, Postal Zip Code Entity Address, Postal Zip Code Restatement Determination Date Restatement Determination Date Discount on gasoline (in usd per gallon) Rewards Program, Discount Amount per Gallon on Gasoline Rewards Program, Discount Amount per Gallon on Gasoline Provision for income taxes Total income tax provision Income Tax Expense (Benefit) Basis spread on variable rate Debt Instrument, Basis Spread on Variable Rate Preferred stock, issued (in shares) Preferred Stock, Shares Issued Pension Adjustments Service Cost Pension Adjustments Service Cost [Member] Assets: Assets, Lessee [Abstract] Assets, Lessee Other assets Increase (Decrease) in Other Current Assets Treasury Stock Stockholders' Equity, Policy [Policy Text Block] Other Income and Expenses [Abstract] Compensation Actually Paid vs. Company Selected Measure Compensation Actually Paid vs. Company Selected Measure [Text Block] Equity, Class of Treasury Stock [Line Items] Equity, Class of Treasury Stock [Line Items] Net cash received from stock option exercises Proceeds from Stock Options Exercised Fixed asset accruals and property-related costs Fixed Asset And Property-Related Accruals, Current Carrying value as of the balance sheet date of obligations incurred through that date and payable for fixed asset purchases. Less: accumulated depreciation and amortization Property, Plant, and Equipment and Finance Lease Right-of-Use Asset, Accumulated Depreciation and Amortization US federal income taxes paid Income Tax Paid, Federal, after Refund Received All Trading Arrangements All Trading Arrangements [Member] Equity Awards Adjustments, Footnote Equity Awards Adjustments, Footnote [Text Block] Total Shareholder Return Vs Peer Group Total Shareholder Return Vs Peer Group [Text Block] Vested, end of period Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested and Expected to Vest, Outstanding, Weighted Average Remaining Contractual Term Class of Treasury Stock [Table] Class of Treasury Stock [Table] Other Effective Income Tax Rate Reconciliation, Other Adjustments, Amount Deferred tax liabilities: Deferred Tax Liabilities, Gross [Abstract] Outstanding, beginning of period (in shares) Outstanding, end of period (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number Commitments and Contingencies Disclosure [Abstract] Restriction on payment of dividends, percentage of trailing 12 months EBITDA (as a percent) Debt Covenants, Restriction On Payment Of Dividends, Percentage Of Trailing 12 Months EBITDA Debt Covenants, Restriction On Payment Of Dividends, Percentage Of Trailing 12 Months EBITDA Due to participants Defined Contribution Plan, Liability, Current Defined Contribution Plan, Liability, Current Unrecognized compensation cost Share-Based Payment Arrangement, Nonvested Award, Option, Cost Not yet Recognized, Amount Net cash provided by operating activities Cash Provided by (Used in) Operating Activity, Including Discontinued Operation Term of borrowing Debt Instrument, Term Effective Income Tax Rate Reconciliation [Table] Effective Income Tax Rate Reconciliation [Table] Retirement of treasury stock Retirement of treasury stock Treasury Stock, Retired, Cost Method, Amount Property and equipment, useful life Property, Plant and Equipment, Useful Life Building Improvements Building Improvements [Member] Preferred stock, par value (in usd per share) Preferred Stock, Par or Stated Value Per Share Financing obligations (see Note 6) Financing Obligation, Noncurrent Financing Obligation, Noncurrent Equity Valuation Assumption Difference, Footnote Equity Valuation Assumption Difference, Footnote [Text Block] PEO Total Compensation Amount PEO Total Compensation Amount Long-term Debt, Type [Axis] Long-Term Debt, Type [Axis] Depreciation expense Depreciation Vested, end of period (in usd per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested and Expected to Vest, Outstanding, Weighted Average Exercise Price 2029 Finance Lease, Liability, to be Paid, Year Four ABL Facility ABL Facility [Member] Information pertaining to the ABL Facility. Equity Components [Axis] Equity Components [Axis] Property, Plant and Equipment [Line Items] Property, Plant and Equipment [Line Items] Sublease income Sublease Income Non-Rule 10b5-1 Arrangement Adopted Non-Rule 10b5-1 Arrangement Adopted [Flag] Net sales Product [Member] Number of Reportable Segments Number of Reportable Segments Retirement Plans Compensation and Employee Benefit Plans [Text Block] Advertising Expenses Advertising Cost [Policy Text Block] Non-contributory defined contribution retirement plan Non-Contributory Defined Contribution Retirement Plan [Member] Non-Contributory Defined Contribution Retirement Plan Entity Address, State or Province Entity Address, State or Province Financing cash flows paid for principal portion of finance leases Finance Lease, Principal Payments Antidilutive Security, Excluded EPS Calculation [Table] Antidilutive Security, Excluded EPS Calculation [Table] Total current liabilities Liabilities, Current Other Interest Income (Expense), Other Interest Income (Expense), Other Individual: Individual [Axis] Expense Defined Contribution Plan, Cost Total property and equipment, gross Property, Plant, and Equipment and Finance Lease Right-of-Use Asset, before Accumulated Depreciation and Amortization Defined Contribution Plan, Compensation Type [Domain] Defined Contribution Plan, Compensation Type [Domain] Defined Contribution Plan, Compensation Type [Domain] Restriction on payment of dividends, general basket Debt Covenants, Restriction On Payment Of Dividends, General Amount Debt Covenants, Restriction On Payment Of Dividends, General Amount Income Tax Jurisdiction [Domain] Income Tax Jurisdiction [Domain] Summary of Asset Retirement Obligations Schedule of Asset Retirement Obligations [Table Text Block] Financing lease liabilities arising from obtaining right-of-use assets Right-of-Use Asset Obtained in Exchange for Finance Lease Liability Document Annual Report Document Annual Report Forgone Recovery, Explanation of Impracticability Forgone Recovery, Explanation of Impracticability [Text Block] Entity Interactive Data Current Entity Interactive Data Current Condensed Income Statement [Table] Condensed Income Statement [Table] Revenue Recognition Revenue from Contract with Customer [Policy Text Block] Annual bonus Annual Bonus [Member] Annual Bonus Intrinsic value of options exercisable Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Intrinsic Value Share-based payment awards Effective Income Tax Rate Reconciliation, Nondeductible Expense, Share-Based Payment Arrangement, Amount Less: significant and other segment expenses Segment Reconciliation [Abstract] Failed sale leaseback transactions, financing obligation Financing Obligation Financing Obligation Disaggregation of Revenue [Table] Disaggregation of Revenue [Table] Long-Lived Tangible Asset [Axis] Long-Lived Tangible Asset [Axis] 2027 Finance Lease, Liability, to be Paid, Year Two Less: finance lease amortization Finance Lease, Right-of-Use Asset, Accumulated Amortization General Merchandise and Services General Merchandise and Services [Member] Refers to general merchandise and services. Other assets Other Assets, Noncurrent Entity Central Index Key Entity Central Index Key PEO Name PEO Name Balance, beginning of period Balance, end of period Asset Retirement Obligation Summary of Future Minimum Principal Payments On Debt Schedule of Maturities of Long-Term Debt [Table Text Block] 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] Restructuring Charges Costs Associated with Exit or Disposal Activities or Restructurings, Policy [Policy Text Block] Outstanding Aggregate Erroneous Compensation Amount Outstanding Aggregate Erroneous Compensation Amount Sale leaseback transaction, proceeds from sale Sale Leaseback Transaction, Proceeds From Sale Sale Leaseback Transaction, Proceeds From Sale Schedule of Segment Reporting Information, by Segment [Table] Schedule of Segment Reporting Information, by Segment [Table] Pre-opening Expenses Start-up Activities, Cost Policy [Policy Text Block] Current: Deferred revenue Contract with Customer, Liability, Current Nontaxable and nondeductible items, net Effective Income Tax Rate Reconciliation, Nondeductible Expense, Amount [Abstract] Prepaid expenses and other current assets Increase (Decrease) in Prepaid Expense and Other Assets Exercise Price Award Exercise Price Entity Filer Category Entity Filer Category Statutory federal income tax rates Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent Pre-opening expenses Pre-Opening Costs Long-term debt Long-Term Debt, Excluding Current Maturities Actual sales returns Revenue From Contract With Customer, Sales Returns Revenue From Contract With Customer, Sales Returns 2028 Finite-Lived Intangible Asset, Expected Amortization, Year Three Deferred tax assets: Deferred Tax Assets, Net [Abstract] Intangible assets subject to amortization, gross carrying amount Finite-Lived Intangible Assets, Gross Total rewards programs Rewards Program [Member] Rewards Program 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] Number of states in which entity operates Number of States in which Entity Operates Treasury stock repurchases included in accrued expenses Stock Repurchased But Not Yet Paid Stock Repurchased But Not Yet Paid Entity Address, Address Line One Entity Address, Address Line One Accumulated Other Comprehensive Income AOCI Attributable to Parent [Member] Accrued expenses and other current liabilities Increase (Decrease) in Accrued Liabilities and Other Operating Liabilities ESPP, allocated shares (in shares) EmployeeStockPurchasePlanNumberOfAllocatedShares The shares or units allocated and reserved for issuance under an employee stock purchase plan. Shares reacquired to satisfy tax withholding obligations (in shares) Share-Based Payment Arrangement, Shares Withheld for Tax Withholding Obligation Service period for full vesting of contribution accounts Defined Contribution Plan, Service Period For Full Vesting Defined Contribution Plan, Service Period For Full Vesting Exercise of stock options APIC, Share-Based Payment Arrangement, Recognition and Exercise Fair Value as of Grant Date Award Grant Date Fair Value Summary of Components of Interest Expense Schedule of Other Nonoperating Income (Expense) [Table Text Block] Changes in unrecognized tax benefits Effective Income Tax Rate Reconciliation, Tax Contingency, Amount Operating lease right-of-use assets Operating Lease Right-of-use Assets Represents operating lease right-of-use asset for deferred tax liabilities. Plus: Incremental shares of potentially dilutive securities (in shares) Incremental Common Shares Attributable to Dilutive Effect of Share-Based Payment Arrangements Granted (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period Forfeited (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeited in Period Defined Contribution Plan, Compensation Type [Axis] Defined Contribution Plan, Compensation Type [Axis] Defined Contribution Plan, Compensation Type Net sales percentage Revenue From Contract With Customer Excluding Assessed Tax, Percentage Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer, represented as a percentage. Long-term debt, fair value Long-Term Debt, Fair Value Changed Peer Group, Footnote Changed Peer Group, Footnote [Text Block] 2027 Lessee, Operating Lease, Liability, to be Paid, Year Two Condensed Financial Information Disclosure [Abstract] Adjustment To PEO Compensation, Footnote Adjustment To PEO Compensation, Footnote [Text Block] Outstanding, end of period Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term Summary of Major Components of Accrued Expenses and Other Current Liabilities Schedule of Accounts Payable and Accrued Liabilities [Table Text Block] Title Trading Arrangement, Individual Title Peer Group Total Shareholder Return Amount Peer Group Total Shareholder Return Amount Condensed Statement of Income Captions [Line Items] Condensed Statement of Income Captions [Line Items] Number of warehouse clubs Number of Stores Interest expense, net Interest expense, net Interest and Debt Expense Non-PEO NEO Non-PEO NEO [Member] Intrinsic value of options outstanding Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Intrinsic Value Common stock issued under ESPP Stock Issued During Period, Value, Employee Stock Purchase Plan Leases not yet commenced, term Lessee, Operating Lease, Lease Not yet Commenced, Term of Contract Award Type [Domain] Award Type [Domain] 2026 Lessee, Operating Lease, Liability, to be Paid, Year One Equity Awards Adjustments Equity Awards Adjustments [Member] Advertising expenses Advertising Expense Changes in operating leases and other non-cash items Other Noncash Income (Expense) Pension Benefits Adjustments, Footnote Pension Benefits Adjustments, Footnote [Text Block] Disaggregation of Revenue [Line Items] Disaggregation of Revenue [Line Items] Compensation Amount Outstanding Recovery Compensation Amount Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Sales returns reserve Revenue From Contract With Customer Reserve For Sales Returns Represents reserve for sales returns for revenue from contract with customer. Recovery of Erroneously Awarded Compensation Disclosure [Line Items] Fair Value Estimate of Fair Value Measurement [Member] Total revenue Contract with Customer, Liability, Revenue Recognized Failed sale leaseback transactions, receivable Failed Sale Leaseback Transactions, Receivable Failed Sale Leaseback Transactions, Receivable MNPI Disclosure Timed for Compensation Value MNPI Disclosure Timed for Compensation Value [Flag] Term of membership Revenue From Contract With Customers Term Of Contract Represents term of contract for revenue form contract with customers. Weighted-average number of shares outstanding: Weighted Average Number of Shares Outstanding Reconciliation [Abstract] Documents Incorporated by Reference Documents Incorporated by Reference [Text Block] Accumulated other comprehensive income Accumulated Other Comprehensive Income (Loss), Net of Tax 2026 Long-Term Debt, Maturity, Year One Total deferred tax liabilities Deferred Tax Liabilities, Gross Award Date [Domain] Award Date [Domain] 2030 Long-Term Debt, Maturity, Year Five Performance Stock Units Performance Shares [Member] Sale leaseback transaction, number of properties Sale Leaseback Transaction, Number Of Properties Sale Leaseback Transaction, Number Of Properties Aggregate Pension Adjustments Service Cost Aggregate Pension Adjustments Service Cost [Member] Other nontaxable and nondeductible items, net Effective Income Tax Rate Reconciliation, Nondeductible Expense, Other, Amount Merchandise inventories Inventory, Net Finite-Lived Intangible Assets by Major Class [Axis] Finite-Lived Intangible Assets by Major Class [Axis] Minimum Minimum [Member] Company Selected Measure Name Company Selected Measure Name Leases Lessee, Operating Leases and Finance Lease [Text Block] The entire disclosure for operating leases of lessee and finance leases of lessee. Fair Value Measurement [Domain] Fair Value Measurement [Domain] Asset Retirement Obligations Asset Retirement Obligation Disclosure [Text Block] Debt and Credit Arrangements Debt Disclosure [Text Block] Aggregate Available Trading Arrangement, Securities Aggregate Available Amount Accounts payable Accounts Payable, Current Operating cash flows paid for operating leases Operating Lease, Payments Stock Appreciation Rights (SARs) Stock Appreciation Rights (SARs) [Member] Commitments and Contingencies Commitments and Contingencies Disclosure [Text Block] Diluted (in shares) Weighted-average shares of common stock and dilutive potential shares of common stock outstanding (in shares) Weighted Average Number of Shares Outstanding, Diluted Non-GAAP Measure Description Non-GAAP Measure Description [Text Block] Entity Small Business Entity Small Business Income Tax Disclosure [Abstract] Preferred stock, outstanding (in shares) Preferred Stock, Shares Outstanding Mr. Robert W. Eddy [Member] Mr. Robert W. Eddy Current Current State and Local Tax Expense (Benefit) Document Transition Report Document Transition Report Total future minimum lease payments Finance Lease, Liability, to be Paid Insurance Type [Domain] Insurance Type [Domain] Insurance Type [Domain] Underlying Securities Award Underlying Securities Amount Payments on long-term debt Repayments of Other Long-Term Debt Equity Component [Domain] Equity Component [Domain] Document Period End Date Document Period End Date Transferable tax credits Taxes Payable, Transferable Tax Credits, Current Taxes Payable, Transferable Tax Credits, Current Income Taxes Income Tax Disclosure [Text Block] Allowance for doubtful accounts Accounts Receivable, Allowance for Credit Loss Proceeds from revolving lines of credit Proceeds from Lines of Credit Environment clean up reserve Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Asset Retirement Obligations Awards Close in Time to MNPI Disclosures, Table Awards Close in Time to MNPI Disclosures [Table Text Block] Exercisable, end of period Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term Document Type Document Type Earnings Per Share Earnings Per Share [Text Block] Name Outstanding Recovery, Individual Name Product and Service [Axis] Product and Service [Axis] Other assets Life Insurance, Corporate or Bank Owned, Amount Variable lease cost Variable Lease, Cost Total revenues Revenue from Contract with Customer, Excluding Assessed Tax Vested, end of period (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested and Expected to Vest, Outstanding, Number Total current assets Assets, Current Statistical Measurement [Axis] Statistical Measurement [Axis] Other Liabilities Disclosure [Abstract] Share repurchase program, authorized amount Share Repurchase Program, Authorized, Amount Unused commitment fee rate Line of Credit Facility, Unused Capacity, Commitment Fee Percentage Aggregate Erroneous Compensation Amount Aggregate Erroneous Compensation Amount Intrinsic value of options exercised Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period, Intrinsic Value Peer Group Issuers, Footnote Peer Group Issuers, Footnote [Text Block] Share Repurchase Program [Domain] Share Repurchase Program [Domain] Total other comprehensive loss Other comprehensive loss, net of tax Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent Current liabilities: Liabilities, Current [Abstract] Stock incentive awards Stock Incentive Awards [Member] Stock Incentive Awards Income per share attributable to common stockholders—diluted (in usd per share) Earnings Per Share, Diluted Debt Instrument, Term [Domain] Debt Instrument, Term [Domain] Debt Instrument, Term [Domain] Accounts receivable, net Accounts Receivable, after Allowance for Credit Loss, Current Supplemental cash flow information: Cash Flow, Noncash Investing and Financing Activities Disclosure [Abstract] Legal, sales, and membership fee reserves Legal, Sales And Membership Fee Reserves, Current Carrying value as of the balance sheet date of obligations incurred through that date and payable for membership fee sales and legal reserves. Treasury stock (in shares) Treasury stock at beginning of period (in shares) Treasury stock at end of period (in shares) Treasury Stock, Common, Shares US state and local income taxes paid Income Tax Paid, State and Local, after Refund Received Description of Business Business Description and Basis of Presentation [Text Block] Net income available for payment of dividends to Parent Amount Available for Dividend Distribution without Affecting Capital Adequacy Requirements Auto liability insurance Auto Liability Insurance [Member] Auto Liability Insurance Auditor Location Auditor Location Reportable Segment Reportable Segment [Member] Reportable Segment Condensed Balance Sheet Statement [Table] Condensed Balance Sheet Statement [Table] Comprehensive Income Comprehensive Income, Policy [Policy Text Block] Actual payout (as a percent) Share-Based Compensation Arrangement By Share-Based Payment Award, Actual Payout Percentage Share-Based Compensation Arrangement By Share-Based Payment Award, Actual Payout Percentage Vesting percentage Defined Contribution Plan Employers Discretionary Contribution, Vesting Percentage Defined Contribution Plan Employers Discretionary Contribution, Vesting Percentage Gains on transferable tax credits Effective Income Tax Rate Reconciliation, Tax Credit Transfer Gain, Percent Effective Income Tax Rate Reconciliation, Tax Credit Transfer Gain, Percent Less: imputed interest Lessee, Operating Lease, Liability, Undiscounted Excess Amount Total income taxes paid Income Taxes Paid, Net Other nontaxable and nondeductible items, net Effective Income Tax Rate Reconciliation, Nondeductible Expense, Other, Percent 2027 Finite-Lived Intangible Asset, Expected Amortization, Year Two Total lease assets Lease, Right-of-Use Asset Lease, Right-of-Use Asset Outstanding payables Outstanding Payables, Current Outstanding Payables, Current Carrying Amount Amount outstanding Total Long-Term Debt, Gross Entity Well-known Seasoned Issuer Entity Well-known Seasoned Issuer Employee compensation and benefits Employee-related Liabilities, Current Property and Equipment, Net Property, Plant and Equipment Disclosure [Text Block] Total future minimum lease payments Lessee, Operating Lease, Liability, to be Paid Total property and equipment, net Property, Plant, and Equipment and Finance Lease Right-of-Use Asset, after Accumulated Depreciation and Amortization BJ’s trade name Trade Names [Member] Sale leaseback transaction, fair value Sale Leaseback Transaction, Fair Value Sale Leaseback Transaction, Fair Value Expiration Date Trading Arrangement Expiration Date 2030 Finite-Lived Intangible Asset, Expected Amortization, Year Five Expenses with related party Related Party Transaction, Amounts of Transaction Property and equipment, net Property, Plant and Equipment, Net Geographic Concentration Risk Geographic Concentration Risk [Member] Compensation Actually Paid vs. Net Income Compensation Actually Paid vs. Net Income [Text Block] Accounts receivable, net Increase (Decrease) in Accounts Receivable Merchandise Inventories Inventory, Policy [Policy Text Block] Entity Current Reporting Status Entity Current Reporting Status Awards Close in Time to MNPI Disclosures Awards Close in Time to MNPI Disclosures [Table] Consolidated Entities [Domain] Consolidated Entities [Domain] Insurance reserves Self Insurance Reserve, Noncurrent Statutory federal income tax rates Effective Income Tax Rate Reconciliation at Federal Statutory Income Tax Rate, Amount Statement of Financial Position [Abstract] Statement of Financial Position [Abstract] Executive Category: Executive Category [Axis] Outstanding performance obligations, excluding earned award dollars Performance Obligations For Contracts With Customers, Excluding Earned Award Dollars [Member] Performance Obligations For Contracts With Customers, Excluding Earned Award Dollars Asset retirement obligations (see Note 15) Asset Retirement Obligations, Noncurrent Share-based payment awards Effective Income Tax Rate Reconciliation, Nondeductible Expense, Share-Based Payment Arrangement, Percent Domestic state and local income taxes, net of federal effect Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Percent Finance lease liabilities Finance Lease, Liability, Current Current Fiscal Year End Date Current Fiscal Year End Date Insurance Type [Axis] Insurance Type [Axis] Insurance Type Finite-Lived Intangible Assets, Major Class Name [Domain] Finite-Lived Intangible Assets, Major Class Name [Domain] Weighted-average Grant-Date Fair Value Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract] Shares available for issuance (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant Equity Awards Adjustments, Excluding Value Reported in Compensation Table Equity Awards Adjustments, 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Erroneous Compensation Analysis Erroneous Compensation Analysis [Text Block] Intangible Asset, Finite-Lived [Table] Intangible Asset, Finite-Lived [Table] Geographical [Axis] Geographical [Axis] Lessee, Lease, Description [Line Items] Lessee, Lease, Description [Line Items] Rule 10b5-1 Arrangement Terminated Rule 10b5-1 Arrangement Terminated [Flag] Erroneously Awarded Compensation Recovery Erroneously Awarded Compensation Recovery [Table] 2024 Repurchase Program Repurchase Program 2024 [Member] Repurchase Program 2024 Concentration Risk Benchmark [Domain] Concentration Risk Benchmark [Domain] Title of 12(b) Security Title of 12(b) Security Lessee, Lease, Description [Table] Lessee, Lease, Description [Table] Dividends paid Adjustments to Additional Paid in Capital, Dividends in Excess of Retained Earnings Other comprehensive loss: Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent [Abstract] Gains on transferable tax credits Effective Income Tax Rate Reconciliation, Tax Credit Transfer Gain, Amount Effective Income Tax Rate Reconciliation, Tax Credit Transfer Gain, Amount Net income per share: Earnings Per Share [Abstract] 2030 Lessee, Operating Lease, Liability, to be Paid, Year Five Summary of Awards Excluded from Computation of Diluted Earnings Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block] Financing obligations Deferred Tax Assets, Financing Obligations Deferred Tax Assets, Financing Obligations Operating lease initial term Lessee Operating Lease Initial Term Of Contract Represents initial term of contract of operating lease. Acquisition of treasury stock (in shares) Shares repurchased (in shares) Treasury Stock, Shares, Acquired Thereafter Finance Lease, Liability, to be Paid, after Year Five Exercised (in usd per share) Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price Award Timing Disclosures [Line Items] Proceeds from the issuance of long-term debt Proceeds from Issuance of Other Long-Term Debt Deferred Deferred State and Local Income Tax Expense (Benefit) Fiscal Year Fiscal Period, Policy [Policy Text Block] Net income Net income Net Income (Loss) Attributable to Parent Construction in progress Construction in Progress [Member] Other Other Accrued Liabilities, Current Summary of Reconciliation of Statutory Federal Income Tax Rate Schedule of Effective Income Tax Rate Reconciliation [Table Text Block] Vesting period Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period Other Effective Income Tax Rate Reconciliation, Other Adjustments, Percent Segment Reporting Information [Line Items] Segment Reporting Information [Line Items] Preferred stock, authorized (in shares) Preferred Stock, Shares Authorized Acquisition of treasury stock Payments for Repurchase of Common Stock Adoption Date Trading Arrangement Adoption Date Base Rate Base Rate [Member] Restriction on payment of dividends, minimum interest coverage ratio Debt Covenant, Restriction On Payment Of Dividends, Minimum Interest Coverage Ratio Debt Covenant, Restriction On Payment Of Dividends, Minimum Interest Coverage Ratio Operating lease term Lessee, Operating Lease, Term of Contract Selling, General and Administrative Expenses Selling, General and Administrative Expenses, Policy [Policy Text Block] E-commerce sales E Commerce [Member] E Commerce Member relationships Customer Relationships [Member] Operating income Operating Income (Loss) Line of Credit Line of Credit [Member] Retained earnings Retained Earnings (Accumulated Deficit) Leasehold costs and improvements Leaseholds and Leasehold Improvements [Member] Audit Information [Abstract] Audit Information 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] Federal: Federal Tax Expense (Benefit) [Abstract] Federal Tax Expense (Benefit) Workers' compensation and general liability insurance Workers Compensation And General Liability Insurance [Member] Workers Compensation And General Liability Insurance Impairment of intangible assets Impairment of Intangible Assets, Indefinite-Lived (Excluding Goodwill) 401(k) savings plan 401(k) Savings Plan [Member] 401(k) Savings Plan 2023 grants Granted In 2023 [Member] Granted In 2023 Allowed contribution/deferral percentage Defined Contribution Plan, Maximum Annual Contributions Per Employee, Percent Gift cards Accrued Gift Cards, Current Carrying value as of the balance sheet date of obligations incurred through that date and payable for gift cards. Estimated payout (as a percent) Share-Based Compensation Arrangement By Share-Based Payment Award, Estimated Payout Percentage Share-Based Compensation Arrangement By Share-Based Payment Award, Estimated Payout Percentage 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] Other Deferred Tax Liabilities, Other Payables and Accruals [Abstract] Statement [Table] Statement [Table] Deferred income tax provision (benefit) Deferred Income Tax Expense (Benefit) Adjustments to reconcile net income to net cash provided by operating activities: Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity [Abstract] Lapses in statute of limitations Unrecognized Tax Benefits, Reduction Resulting from Lapse of Applicable Statute of Limitations CASH FLOWS FROM FINANCING ACTIVITIES Cash Provided by (Used in) Financing Activity, Including Discontinued Operation [Abstract] Revenue Benchmark Revenue Benchmark [Member] 2024 grants Granted in 2024 [Member] Granted in 2024 Variable Rate [Domain] Variable Rate [Domain] Total deferred revenue Deferred revenue balance, beginning of period Deferred revenue balance, end of period Contract with Customer, Liability Finance lease liabilities Finance Lease, Liability, Noncurrent Fees associated with refinancing Debt Instrument, Refinancing Costs Debt Instrument, Refinancing Costs Massachusetts MASSACHUSETTS All Adjustments to Compensation All Adjustments to Compensation [Member] Retirement of treasury stock (in shares) Retirement of treasury stock (in shares) Treasury Stock, Shares, Retired Amendment Flag Amendment Flag Shares authorized (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized Treasury stock, at cost, no shares at January 31, 2026 and 17,327 shares at February 1, 2025 Treasury stock, at cost, no shares at January 31, 2026 and 17,327 shares at February 1, 2025 Treasury Stock, Common, Value Termination Date Trading Arrangement Termination Date Insider Trading Policies and Procedures Adopted Insider Trading Policies and Procedures Adopted [Flag] Weighted-average discount rate - operating leases Operating Lease, Weighted Average Discount Rate, Percent Summary of Stock Option Activity Share-Based Payment Arrangement, Option, Activity [Table Text Block] Rewards earned Contract with Customer, Liability, Increase From Deferral Of Revenue Contract with Customer, Liability, Increase From Deferral Of Revenue Basic (in shares) Weighted-average shares of common stock outstanding, used for basic computation (in shares) Weighted Average Number of Shares Outstanding, Basic New Jersey NEW JERSEY Unrecognized tax benefits that would favorably affect the effective tax rate Unrecognized Tax Benefits that Would Impact Effective Tax Rate Land and buildings Land and Building [Member] Summary of Reconciliation of Basic and Diluted Weighted-average Common Shares Outstanding Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Exercisable, end of period (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Number Segment Reporting [Abstract] Cost of sales Cost of Revenue Debt Disclosure [Abstract] Non-employee Share-Based Payment Arrangement, Nonemployee [Member] Proceeds from financing obligations Proceeds From Financing Obligations Represents proceeds from lease payment, sales type and direct financing leases, for financing activity. Forgone Recovery due to Expense of Enforcement, Amount Forgone Recovery due to Expense of Enforcement, Amount Consolidated Entities [Axis] Consolidated Entities [Axis] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] Common stock, par value (in usd per share) Common Stock, Par or Stated Value Per Share Number of options granted (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross Liabilities: Liabilities, Lessee [Abstract] Liabilities, Lessee Use of Estimates Use of Estimates, Policy [Policy Text Block] Operating cash flows paid for interest portion of finance leases Finance Lease, Interest Payment on Liability Selling, general & administrative expenses Selling, General And Administrative Expense And Pre-Opening Costs Selling, General And Administrative Expense And Pre-Opening Costs Insider Trading Arrangements [Line Items] Number of Securities to be Issued Upon Exercise of Outstanding Options Share-Based Compensation Arrangement by Share-Based Payment Award, Non-Option Equity Instruments, Outstanding [Roll Forward] Deferred revenues and vendor income Product and Service, Other [Member] Gift card program Gift Card Program [Member] Represents gift card program. Total liabilities Liabilities Antidilutive Securities, Name [Domain] Antidilutive Securities, Name [Domain] Balance Sheet Parenthetical Balance Sheet Parenthetical [Abstract] Balance Sheet Parenthetical 2030 Finance Lease, Liability, to be Paid, Year Five Pension Adjustments Prior Service Cost Pension Adjustments Prior Service Cost [Member] Additions for tax positions taken during the current year Unrecognized Tax Benefits, Increase Resulting from Current Period Tax Positions Material Terms of Trading Arrangement Material Terms of Trading Arrangement [Text Block] Term Two Debt Instrument, Term Two [Member] Debt Instrument, Term Two Amount of restricted net assets of consolidated subsidiaries Amount of Restricted Net Assets for Consolidated and Unconsolidated Subsidiaries Performance target (greater than) (as a percent) Share Based Compensation Arrangement by Share Based Payment Award, Award Performance Target Share Based Compensation Arrangement by Share Based Payment Award, Award Performance Target Variable Rate [Axis] Variable Rate [Axis] ESPP, annual increase on first day of calendar year EmployeeStockPurchasePlanAnnualIncreaseInNumberOfSharesPercentOfSharesOutstanding The amount of annual increase in the number of shares available for purchase under the employee stock purchase plan calculated as a percentage of shares outstanding at the end of the previous fiscal period end. Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Non-NEOs Non-NEOs [Member] Private label brands Private Label Brands [Member] Represents information related to private label brands.