Trading Arrangements, by Individual Trading Arrangements, by Individual [Table] Reconciliation of the basic and diluted number of shares used in computing earnings per share: Weighted Average Number of Shares Outstanding, Diluted [Abstract] Schedule of Identifiable Intangible Assets Intangible Asset and Goodwill [Table Text Block] Trading Arrangement: Trading Arrangement [Axis] Maximum Maximum [Member] Portion at Fair Value Measurement Portion at Fair Value Measurement [Member] Statistical Measurement [Domain] Statistical Measurement [Domain] Debt instrument, guarantees exception, carrying value of owned real property (less than or equal to) Debt Instrument, Guarantees Exception, Carrying Value of Owned Real Property Debt Instrument, Guarantees Exception, Carrying Value of Owned Real Property Interest Rate Swap Due December 29, 2028 Interest Rate Swap Due December 29, 2028 [Member] Interest Rate Swap Due December 29, 2028 Title of 12(b) Security Title of 12(b) Security Subsequent event Subsequent Event [Member] Carrying Value Reported Value Measurement [Member] Document Fiscal Year Focus Document Fiscal Year Focus Adjustment to Compensation, Amount Adjustment to Compensation Amount Segment Reporting [Abstract] Segment Reporting [Abstract] Retail Retail Segment [Member] Retail Segment Schedule of Estimated Future Amortization Expense Intangible Asset, Finite-Lived, and Capitalized Cost, Software to be Sold, Leased, or Marketed, Estimated Amortization Expense [Table Text Block] Debt covenant, springing maturity criteria, minimum principal amount outstanding Debt Instrument, Covenant, Springing Maturity Criteria, Minimum Principal Amount Outstanding Debt Instrument, Covenant, Springing Maturity Criteria, Minimum Principal Amount Outstanding Accrued compensation and benefits Employee-related Liabilities, Current BENEFIT PLANS Retirement Benefits [Text Block] Guarantor obligations, maximum exposure, undiscounted Guarantor Obligations, Maximum Exposure, Undiscounted Line of credit Line of Credit [Member] Restatement Determination Date Restatement Determination Date Expected return on plan assets Defined Benefit Plan, Expected Return (Loss) on Plan Assets Long-term debt, including current portion Long-Term Debt and Lease Obligation, Including Current Maturities Derivative Instrument [Axis] Derivative Instrument [Axis] Restricted stock vestings (in shares) Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures Measurement Frequency [Axis] Measurement Frequency [Axis] Amendment Flag Amendment Flag Goodwill [Line Items] Goodwill [Line Items] Provision for losses on receivables Accounts Receivable, Credit Loss Expense (Reversal) Entity Common Stock, Shares Outstanding (in shares) Entity Common Stock, Shares Outstanding Loss Contingencies [Table] Loss Contingencies [Table] Distributions to noncontrolling interests Payments to Noncontrolling Interests Adjustment to Non-PEO NEO Compensation Footnote Adjustment to Non-PEO NEO Compensation Footnote [Text Block] Swap Agreements Swap agreements Swap Agreements [Member] Swap Agreements Property, Plant, and Equipment [Abstract] Entity Address, State or Province Entity Address, State or Province PEO Total Compensation Amount PEO Total Compensation Amount Foreign currency translation adjustments Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax Common stock, par value (in dollars per share) Common Stock, Par or Stated Value Per Share Payments for capital expenditures: Segment Reporting, Long-Lived Asset, Expenditure for Addition Reclassification out of accumulated other comprehensive income Reclassification out of Accumulated Other Comprehensive Income [Member] 6.750% Senior Notes due 2028 Senior Notes Due October 2028, 6.750% [Member] Senior Notes Due October 2028, 6.750% ASSET IMPAIRMENT CHARGES Asset, Impairment [Text Block] Intangible assets, net Net Intangible Asset, Excluding Goodwill, after Accumulated Amortization Notional Value (in millions) Derivative, Notional Amount Basic (in shares) Basic weighted average shares outstanding (in shares) Weighted Average Number of Shares Outstanding, Basic Accumulated goodwill impairment charges Goodwill, Impaired, Accumulated Impairment Loss Retirement Benefits [Abstract] Retirement Benefits [Abstract] Debt, collateral amount Debt Instrument, Collateral Amount Outstanding Aggregate Erroneous Compensation Amount Outstanding Aggregate Erroneous Compensation Amount Fair Value, by Balance Sheet Grouping [Table] Fair Value, by Balance Sheet Grouping [Table] Loss Contingencies [Line Items] Loss Contingencies [Line Items] Number of reportable segments Number of Reportable Segments Total current liabilities Liabilities, Current Customer relationships Customer Relationships [Member] Current derivative liability Derivative Liability, Current Schedule of Derivative Instruments Schedule of Derivative Instruments [Table Text Block] LIFO charge LIFO benefit Inventory, LIFO Reserve, Period Charge Entity Address, City or Town Entity Address, City or Town Defined Benefit Plan Disclosure [Line Items] Defined Benefit Plan Disclosure [Line Items] Statement of Financial Position [Abstract] Statement of Financial Position [Abstract] Interest Rate Swap due June 30, 2028 Interest Rate Swap Due June 30, 2028 1 [Member] Interest Rate Swap Due June 30, 2028 1 Award Timing MNPI Disclosure Award Timing MNPI Disclosure [Text Block] Basis of Presentation Basis of Accounting, Policy [Policy Text Block] Interest Rate Swap due October 30, 2026 Interest Rate Swap Due October 30, 2026 1 [Member] Interest Rate Swap Due October 30, 2026 1 Net Intangible Asset, Finite-Lived, after Accumulated Amortization Peer Group Total Shareholder Return Amount Peer Group Total Shareholder Return Amount Recognition of other cash flow derivatives, net of tax Other Comprehensive Income (Loss), Derivative, Excluded Component, Increase (Decrease), after Adjustments and Tax Non-cash interest expense and other adjustments Noncash Interest (Income) Expense Noncash Interest (Income) Expense Level 2 Fair Value, Inputs, Level 2 [Member] Accumulated Amortization Accumulated Amortization Intangible Asset, Finite-Lived, Accumulated Amortization Total Shareholder Return Vs Peer Group Total Shareholder Return Vs Peer Group [Text Block] Line of credit facility, maximum borrowing capacity Line of Credit Facility, Maximum Borrowing Capacity Total other comprehensive income (loss) Other comprehensive income (loss) Net current period Other comprehensive income Other Comprehensive Income (Loss), Net of Tax Non-Rule 10b5-1 Arrangement Terminated Non-Rule 10b5-1 Arrangement Terminated [Flag] Less: current portion of long-term debt Long-Term Debt, Current Maturities Subsequent Event Type [Axis] Subsequent Event Type [Axis] Recognition of interest rate swap cash flow hedges, net of tax Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax Schedule of Long-term Debt Instruments [Table] Schedule of Long-Term Debt Instruments [Table] Indefinite lived intangible assets, net Indefinite-Lived Intangible Assets, Net Indefinite-Lived Intangible Assets, Net Recently Adopted Accounting Pronouncements New Accounting Pronouncements, Policy [Policy Text Block] Litigation Case [Axis] Litigation Case [Axis] Additions of property and equipment included in Accounts payable Capital Expenditures Incurred but Not yet Paid Maturity Component [Domain] Maturity Component [Domain] Maturity Component [Domain] Schedule of Business Segment Information Segment Reporting [Table Text Block] Loss (gain) on sale of assets Gain (Loss) on Disposition of Property Plant Equipment Noncontrolling Interests Noncontrolling Interest [Member] Use of Estimates Use of Estimates, Policy [Policy Text Block] Springing Maturity Component Springing Maturity Component Two [Member] Springing Maturity Component Two Repayments of borrowings under revolving credit line Repayments of Lines of Credit Derivative Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration] Derivative Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration] Long-term debt Long-Term Debt Notes receivable, including current portion Notes Receivable, Fair Value Disclosure Interest Rate Swap due October 30, 2026 Interest Rate Swap Due October 30, 2026 [Member] Interest Rate Swap Due October 30, 2026 Maturity Component [Axis] Maturity Component [Axis] Maturity Component Document Period End Date Document Period End Date Changes in operating assets and liabilities Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity, Increase (Decrease) in Operating Capital [Abstract] Net cash used in investing activities Cash Provided by (Used in) Investing Activity, Including Discontinued Operation Equity Awards Adjustments, Excluding Value Reported in Compensation Table Equity Awards Adjustments, Excluding Value Reported in the Compensation Table [Member] Preferred stock, shares outstanding (in shares) Preferred Stock, Shares Outstanding Debt instrument, face amount Debt Instrument, Face Amount COMPREHENSIVE INCOME (LOSS) AND ACCUMULATED OTHER COMPREHENSIVE LOSS Equity [Text Block] Loss per share: Earnings Per Share, Basic [Abstract] Security Exchange Name Security Exchange Name Treasury stock at cost Treasury Stock, Common, Value Reclassification out of Accumulated Other Comprehensive Income [Domain] Reclassification out of Accumulated Other Comprehensive Income [Domain] Fiscal Year Fiscal Period, Policy [Policy Text Block] SOFR and BA Secured Overnight Financing Rate (SOFR) And Bankers Acceptance Rate [Member] Secured Overnight Financing Rate (SOFR) And Bankers Acceptance Rate LIFO reserve Inventory, LIFO Reserve Accumulated other comprehensive loss Accumulated Other Comprehensive Income (Loss), Net of Tax Entity Shell Company Entity Shell Company Consolidation Items [Domain] Consolidation Items [Domain] Benefit Plans Accumulated Defined Benefit Plans Adjustment Including Portion Attributable to Noncontrolling Interest [Member] New ABL Credit Facility New ABL Credit Facility [Member] New ABL Credit Facility Current portion of operating lease liabilities Operating Lease, Liability, Current Statement of Comprehensive Income [Abstract] Statement of Comprehensive Income [Abstract] Trademarks and tradenames Trademarks and Trade Names [Member] Recognition of other cash flow derivatives, tax expense Other Comprehensive Income (Loss), Derivative, Excluded Component, Increase (Decrease), after Adjustments, Tax EARNINGS (LOSS) PER SHARE Earnings Per Share [Text Block] Name Outstanding Recovery, Individual Name Earnings Per Share [Abstract] Earnings Per Share [Abstract] Award Timing, How MNPI Considered Award Timing, How MNPI Considered [Text Block] Share of potential award Loss Contingency, Share of Potential Award, Value Loss Contingency, Share of Potential Award, Value Document Fiscal Period Focus Document Fiscal Period Focus Peer Group Issuers, Footnote Peer Group Issuers, Footnote [Text Block] Total liabilities Liabilities Trading Symbol Trading Symbol Payments for capital expenditures Payments to Acquire Property, Plant, and Equipment Schedule of Interest Rate Derivatives Schedule of Interest Rate Derivatives [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] Pension Adjustments Prior Service Cost Pension Adjustments Prior Service Cost [Member] Weighted average shares outstanding: Weighted Average Number of Shares Outstanding, Basic [Abstract] Company Selected Measure Name Company Selected Measure Name Income Tax Disclosure [Abstract] Income Tax Disclosure [Abstract] Earnings per share: Earnings Per Share, Diluted [Abstract] Benefit Plans Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member] Long-term debt, gross Long-Term Debt, Gross Letter of credit fees Line of Credit Facility, Commitment Fee Percentage Net book overdrafts Bank Overdrafts Credit Facility [Domain] Credit Facility [Domain] Other receivables, net Other Receivables, Net, Current Compensation Amount Outstanding Recovery Compensation Amount Individual: Individual [Axis] Diluted (in shares) Diluted weighted average shares outstanding (in shares) Weighted Average Number of Shares Outstanding, Diluted Entity Emerging Growth Company Entity Emerging Growth Company Equity Valuation Assumption Difference, Footnote Equity Valuation Assumption Difference, Footnote [Text Block] Pension and other postretirement benefit obligations Liability, Defined Benefit Plan, Noncurrent Line of Credit Facility [Table] Line of Credit Facility [Table] Pay Fixed Rate Derivative, Forward Interest Rate Underlying Security Market Price Change Underlying Security Market Price Change, Percent Line of credit facility, borrowing capacity, reserves Line Of Credit Facility, Borrowing Capacity, Reserves Line Of Credit Facility, Borrowing Capacity, Reserves Proceeds from borrowings under revolving credit line Proceeds from Lines of Credit Property and equipment, net Property, Plant, and Equipment and Finance Lease Right-of-Use Asset, after Accumulated Depreciation and Amortization DERIVATIVES Derivative Instruments and Hedging Activities Disclosure [Text Block] Line of credit facility, current borrowing capacity Line of Credit Facility, Current Borrowing Capacity Gross profit Gross Profit Revenue from Contract with Customer [Abstract] Revenue from Contract with Customer [Abstract] Net effect of dilutive stock awards based upon the treasury stock method (in shares) Weighted Average Number of Shares Outstanding, Diluted, Adjustment Long-lived asset impairment charges Long-Lived Asset, Held and Used, Impairment Loss Award Timing Predetermined Award Timing Predetermined [Flag] Treasury Stock Treasury Stock, Common [Member] Intangible Asset, Goodwill and Other [Abstract] Intangible Asset, Goodwill and Other [Abstract] Adjustment To PEO Compensation, Footnote Adjustment To PEO Compensation, Footnote [Text Block] Share-based compensation APIC, Share-Based Payment Arrangement, Increase for Cost Recognition Level 1 Fair Value, Inputs, Level 1 [Member] Noncurrent derivative assets Derivative Asset, Noncurrent Notes receivable, net, included within Prepaid expenses and other current assets Receivable from Customer in Brokerage Effective income tax rate, expense (benefit) Effective Income Tax Rate Reconciliation, Percent Indefinite-lived Intangible Assets, Major Class Name [Domain] Intangible Asset, Indefinite-Lived, Class [Domain] Debt covenant, springing maturity criteria, number of days prior to maturity of senior notes, if circumstances met Debt Instrument, Covenant, Springing Maturity Criteria, Number Of Days Prior To Maturity Of Senior Notes, If Circumstances Met Debt Instrument, Covenant, Springing Maturity Criteria, Number Of Days Prior To Maturity Of Senior Notes, If Circumstances Met All Executive Categories All Executive Categories [Member] Pension Adjustments Service Cost Pension Adjustments Service Cost [Member] Other comprehensive income (loss): Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent [Abstract] Distribution expenses Production and Distribution Costs Preferred stock, par value (in dollars per share) Preferred Stock, Par or Stated Value Per Share Long-term debt, including current portion Long-Term Debt, Fair Value Depreciation and amortization Depreciation Scenario [Domain] Scenario [Domain] Accounting Policies [Line Items] Accounting Policies [Line Items] Accounting Policies Asset impairment charges Tangible Asset Impairment Charges Operating lease assets Operating Lease, Right-of-Use Asset AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward] AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward] Relator granted summary judgement Loss Contingency, Number Of Relators Loss Contingency, Number Of Relators Guarantor Obligations, Nature [Axis] Guarantor Obligations, Nature [Axis] Interest rate cash flow hedge loss to be reclassified during next 12 months, net Interest Rate Cash Flow Hedge Gain (Loss) to be Reclassified During Next 12 Months, Net Schedule of Loss Per Share Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Fair Value Disclosures [Abstract] Fair Value Disclosures [Abstract] Debt Disclosure [Abstract] Debt Disclosure [Abstract] Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Current portion of long-term debt and finance lease liabilities Long-Term Debt and Lease Obligation, Current BUSINESS SEGMENTS Segment Reporting [Text Block] Minimum Minimum [Member] Expiration Date Trading Arrangement Expiration Date Non-Rule 10b5-1 Arrangement Adopted Non-Rule 10b5-1 Arrangement Adopted [Flag] Total stockholders’ equity Beginning balance Ending balance Equity, Including Portion Attributable to Noncontrolling Interest Cybersecurity incident Other Nonrecurring Expense 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] Net periodic benefit income Defined Benefit Plan, Net Periodic Benefit Cost (Credit) Aggregate Pension Adjustments Service Cost Aggregate Pension Adjustments Service Cost [Member] Derivative [Table] Derivative [Table] Common stock, shares authorized (in shares) Common Stock, Shares Authorized Accumulated Other Comprehensive Income (Loss) [Line Items] Accumulated Other Comprehensive Income (Loss) [Line Items] Exercise Price Award Exercise Price Restructuring Cost [Table] Restructuring Cost [Table] Restricted stock vestings Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures Fair value, measurements, recurring Fair Value, Recurring [Member] Closed property charges and costs, net Facility Closing [Member] Business segment information Segment Reporting [Line Items] Document Quarterly Report Document Quarterly Report 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] Segments [Domain] Segments [Domain] Interest rate swaps Interest Rate Swap [Member] Cash and cash equivalents, at beginning of period Cash and cash equivalents, at end of period Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Including Discontinued Operation EFFECT OF EXCHANGE RATE ON CASH Effect of Exchange Rate on Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Including Discontinued Operation LONG-TERM DEBT Debt Disclosure [Text Block] Scenario [Axis] Scenario [Axis] Repayments of long-term debt and finance leases Repayments of Long-Term Debt Debt issuance costs, net Debt Issuance Costs, Net Schedule of Restructuring and Related Costs Restructuring and Related Costs [Table Text Block] Awards Close in Time to MNPI Disclosures, Table Awards Close in Time to MNPI Disclosures [Table Text Block] Restructuring reserve, beginning balance Restructuring reserve, ending balance Restructuring Reserve Equity Component [Domain] Equity Component [Domain] PEO Actually Paid Compensation Amount PEO Actually Paid Compensation Amount Secured Debt Secured debt Secured Debt [Member] Adoption Date Trading Arrangement Adoption Date Inventories, Net Inventory, Policy [Policy Text Block] Stated interest rate (as a percent) Debt Instrument, Interest Rate, Stated Percentage Total United Natural Foods, Inc. stockholders’ equity Equity, Attributable to Parent Restructuring Type [Axis] Restructuring Type [Axis] ASSETS Assets [Abstract] Title Trading Arrangement, Individual Title Forgone Recovery due to Disqualification of Tax Benefits, Amount Forgone Recovery due to Disqualification of Tax Benefits, Amount Accounting Policies [Abstract] Accounting Policies [Abstract] Restatement does not require Recovery Restatement Does Not Require Recovery [Text Block] Guarantor obligations, maximum exposure, discounted Guarantor Obligations, Maximum Exposure, Discounted Guarantor Obligations, Maximum Exposure, Discounted Insider Trading Policies and Procedures [Line Items] Allowance for uncollectible receivables Accounts Receivable, Allowance for Credit Loss, Current Insider Trading Policies and Procedures Adopted Insider Trading Policies and Procedures Adopted [Flag] Schedule of Line of Credit Facilities Schedule of Line of Credit Facilities [Table Text Block] Prepaid expenses and other current assets Prepaid Expense and Other Assets, Current Deferred income tax expense (benefit) Deferred Income Tax Expense (Benefit) Cybersecurity incident expense included in gross profit Cybersecurity Incident Expense, Included In Net Sales Cybersecurity Incident Expense Included In Net Sales Defined benefit plan, expected future employer contributions, current fiscal year Defined Benefit Plan, Expected Future Employer Contributions, Current Fiscal Year Interest expense, net Interest Income (Expense), Nonoperating Type of Restructuring [Domain] Type of Restructuring [Domain] Restructuring, acquisition and integration related expenses Total Restructuring, acquisition and integration related expenses Restructuring and severance-related charges Restructuring, acquisition, and integration related expenses Restructuring, Settlement and Impairment Provisions Letter of credit Letter of Credit [Member] Loss on sale of accounts receivable Gain (Loss) on Sale of Accounts Receivable COMMITMENTS, CONTINGENCIES AND OFF-BALANCE SHEET ARRANGEMENTS Commitments and Contingencies Disclosure [Text Block] Compensation Actually Paid vs. Net Income Compensation Actually Paid vs. Net Income [Text Block] Anti-dilutive share-based awards excluded from the calculation of diluted earnings (loss) per share (in shares) Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Conventional Conventional Segment [Member] Conventional Segment Entity Central Index Key Entity Central Index Key Weighted average Weighted Average [Member] Common stock, $0.01 par value, authorized 100.0 shares; 64.0 shares issued and 60.7 shares outstanding at May 2, 2026; 63.1 shares issued and 60.6 shares outstanding at August 2, 2025 Common Stock, Value, Outstanding Additional paid-in capital Additional Paid in Capital, Common Stock All Adjustments to Compensation All Adjustments to Compensation [Member] Unallocated corporate Segment Reporting, Reconciling Item, Corporate Nonsegment [Member] Equity [Abstract] Equity [Abstract] 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] Net cash provided by operating activities Cash Provided by (Used in) Operating Activity, Including Discontinued Operation Other comprehensive income before reclassifications Other Comprehensive Income (Loss), before Reclassifications, Net of Tax Income Statement [Abstract] Income Statement [Abstract] Stockholders’ equity: Equity, Attributable to Parent [Abstract] Document Transition Report Document Transition Report Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] Designated as hedging instrument Designated as Hedging Instrument [Member] Deferred income taxes Deferred Income Tax Assets, Net Elimination of intersegment profit Elimination Of Intersegment Profit Elimination Of Intersegment Profit Long-term finance lease liabilities Finance Lease, Liability, Noncurrent Intersegment Eliminations Intersegment Eliminations [Member] Stock Appreciation Rights (SARs) Stock Appreciation Rights (SARs) [Member] Derivative Liability, Current, Statement of Financial Position [Extensible Enumeration] Derivative Liability, Current, Statement of Financial Position [Extensible Enumeration] Basis spread on variable rate Applicable margin Debt Instrument, Basis Spread on Variable Rate City Area Code City Area Code Variable Rate [Domain] Variable Rate [Domain] Accumulated Other Comprehensive Loss AOCI Attributable to Parent [Member] All Individuals All Individuals [Member] SUBSEQUENT EVENTS Subsequent Events [Text Block] Name Forgone Recovery, Individual Name Non-GAAP Measure Description Non-GAAP Measure Description [Text Block] Statement [Line Items] Statement [Line Items] Total assets Assets Defined Benefit Plan [Table] Defined Benefit Plan [Table] ABL FILO Loans ABL FILO Loans [Member] ABL FILO Loans Preferred stock, shares issued (in shares) Preferred Stock, Shares Issued New Accounting Pronouncements and Changes in Accounting Principles [Abstract] Accounting Standards Update and Change in Accounting Principle [Abstract] Operating segments Operating segments Operating Segments [Member] Interest expense, net Total amounts of expense line items presented in the Condensed Consolidated Statements of Operations in which the effects of cash flow hedges are recorded Interest expense, net Interest Expense, Nonoperating PEO PEO [Member] Measurement Basis [Axis] Measurement Basis [Axis] Other long-term liabilities Other Liabilities, Noncurrent Goodwill Goodwill Retirement Plan Type [Axis] Retirement Plan Type [Axis] Forgone Recovery due to Violation of Home Country Law, Amount Forgone Recovery due to Violation of Home Country Law, Amount Cash and Cash Equivalents Cash and Cash Equivalents, Policy [Policy Text Block] Restructuring-related charges Restructuring, Settlement, And Impairment Provisions, Net Restructuring, Settlement, And Impairment Provisions, Net Subsequent Event Type [Domain] Subsequent Event Type [Domain] Intangible Asset, Excluding Goodwill, after Accumulated Amortization [Abstract] Intangible Asset, Excluding Goodwill, after Accumulated Amortization [Abstract] Disaggregation of Income Statement Expense, Caption, Identifier [Axis] Disaggregation of Income Statement Expense, Caption, Identifier [Axis] Retained Earnings Retained Earnings [Member] Long-term operating lease liabilities Operating Lease, Liability, Noncurrent Revolving credit facility Revolving Credit Facility [Member] Net income attributable to noncontrolling interests Net Income Attributable To Noncontrolling Interests Net Income Attributable To Noncontrolling Interests Erroneously Awarded Compensation Recovery Erroneously Awarded Compensation Recovery [Table] Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] Common stock, shares outstanding (in shares) Beginning balance (in shares) Ending balance (in shares) Common Stock, Shares, Outstanding Award Timing Disclosures [Line Items] Foreign Currency Translation Accumulated Foreign Currency Adjustment Attributable to Parent [Member] Schedule of Fair Value, by Balance Sheet Grouping Fair Value, by Balance Sheet Grouping [Table Text Block] Payments for debt issuance costs Payments of Debt Issuance Costs Diluted earnings (loss) per share (in dollars per share) Diluted earnings (loss) per share (in dollars per share) Earnings Per Share, Diluted Accumulated Other Comprehensive Income (Loss) [Table] Accumulated Other Comprehensive Income (Loss) [Table] Entity Current Reporting Status Entity Current Reporting Status Other Cash Flow Derivatives Other Contract [Member] Net cash used in financing activities Cash Provided by (Used in) Financing Activity, Including Discontinued Operation Total Shareholder Return Amount Total Shareholder Return Amount Prepaid expenses and other assets Increase (Decrease) in Prepaid Expense and Other Assets Recognition of interest rate swap cash flow hedges, tax expense (benefit) Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification, Tax Litigation Case [Domain] Litigation Case [Domain] Amortization expense Intangible Asset, Finite-Lived, Amortization Expense Line of Credit Facility [Line Items] Line of Credit Facility [Line Items] Share-based compensation Share-based Compensation EBITDA Adjustment Share-based Compensation EBITDA Adjustment Net sales Revenue from Contract with Customer, Excluding Assessed Tax Interest cost Defined Benefit Plan, Interest Cost Unutilized commitment fees Line of Credit Facility, Unused Capacity, Commitment Fee Percentage ABL Credit Facility ABL Credit Facility [Member] ABL Credit Facility Contract termination charges and costs Contract Termination [Member] Schedule of Restructuring Reserve by Type of Cost Schedule of Restructuring Reserve by Type of Cost [Table Text Block] Schedule of Intangible Assets [Line Items] Schedule of Intangible Assets [Line Items] [Line Items] for Schedule of Intangible Assets [Table] Other adjustments Other Income Intangible Asset, Finite-Lived, Class [Axis] Intangible Asset, Finite-Lived, Class [Axis] Equity Awards Adjustments, Footnote Equity Awards Adjustments, Footnote [Text Block] GOODWILL AND INTANGIBLE ASSETS, NET Intangible Asset and Goodwill [Text Block] Underlying Securities Award Underlying Securities Amount Less comprehensive income attributable to noncontrolling interests Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest Fair Value Estimate of Fair Value Measurement [Member] Gross Carrying Amount Intangible Asset, Excluding Goodwill, before Accumulated Amortization REVENUE RECOGNITION Revenue from Contract with Customer [Text Block] Interest Rate Swap due October 30, 2026 Interest Rate Swap Due October 30, 2026 2 [Member] Interest Rate Swap Due October 30, 2026 2 Inventories Increase (Decrease) in Inventories Segment Reporting [Table] Segment Reporting [Table] CASH FLOWS FROM INVESTING ACTIVITIES: Cash Provided by (Used in) Investing Activity, Continuing Operation [Abstract] CASH FLOWS FROM OPERATING ACTIVITIES: Cash Provided by (Used in) Operating Activity, Continuing Operation [Abstract] Commitments and Contingencies Disclosure [Abstract] Commitments and Contingencies Disclosure [Abstract] All Trading Arrangements All Trading Arrangements [Member] Other Performance Measure, Amount Other Performance Measure, Amount Award Timing MNPI Considered Award Timing MNPI Considered [Flag] Operating income Operating Income (Loss) Accounts receivable, sale, authorized amount Accounts Receivable, Sale, Authorized Amount Accounts Receivable, Sale, Authorized Amount Current Fiscal Year End Date Current Fiscal Year End Date Schedule of Intangible Assets [Table] Schedule of Intangible Assets [Table] Schedule of Intangible Assets [Table] Non-PEO NEO Average Total Compensation Amount Non-PEO NEO Average Total Compensation Amount Derivative [Line Items] Derivative [Line Items] Multi-District Litigation Multi-District Litigation [Member] Multi-District Litigation Restructuring Reserve [Roll Forward] Restructuring Reserve [Roll Forward] 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] Loss on sale of assets and other asset charges Loss on sale of assets and other asset charges Gain (Loss) On Disposition Of Property Plant Equipment, Net Gain (Loss) On Disposition Of Property Plant Equipment, Net Entity File Number Entity File Number Rule 10b5-1 Arrangement Adopted Rule 10b5-1 Arrangement Adopted [Flag] Senior Notes Senior Notes due 2028, 6.750% [Member] Senior Notes due 2028, 6.750% Other cash flow hedges Other Cash Flow Hedges [Member] Other Cash Flow Hedges Distributions to noncontrolling interests Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders Recovery of Erroneously Awarded Compensation Disclosure [Line Items] Common stock, shares issued (in shares) Common Stock, Shares, Issued Measure: Measure [Axis] Effect of one percent decrease on fair value of interest rate fair value hedging instruments Effect of One Percent Decrease on Fair Value of Interest Rate Fair Value Hedging Instruments Effect of One Percent Decrease on Fair Value of Interest Rate Fair Value Hedging Instruments Treasury stock, beginning balance (in shares) Treasury stock, ending balance (in shares) Treasury Stock, Common, Shares Equity Components [Axis] Equity Components [Axis] Aggregate principal amount of the senior notes Debt Instrument, Repurchase Amount Accounts and notes receivable Increase (Decrease) in Accounts Receivable Payment guarantee Payment Guarantee [Member] Cash payments for federal, state, and foreign income taxes, net Income Tax Paid, after Refund Received Entity Interactive Data Current Entity Interactive Data Current Unallocated corporate overhead Unallocated Corporate Overhead Unallocated Corporate Overhead Variable Rate [Axis] Variable Rate [Axis] Less net income attributable to noncontrolling interests Net Income (Loss) Attributable to Noncontrolling Interest Compensation Actually Paid vs. Other Measure Compensation Actually Paid vs. Other Measure [Text Block] Gain reclassified from comprehensive income (loss) into earnings Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net Entity Small Business Entity Small Business Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] Total comprehensive income (loss) attributable to United Natural Foods, Inc. Comprehensive Income (Loss), Net of Tax, Attributable to Parent Original issue discount on debt Debt Instrument, Unamortized Discount Termination Date Trading Arrangement Termination Date Indefinite-lived intangible assets, gross Indefinite-Lived Intangible Assets, Gross Indefinite-Lived Intangible Assets, Gross Subsequent Events [Abstract] Subsequent Events [Abstract] Natural Natural Segment [Member] Natural Segment Derivative Asset, Current, Statement of Financial Position [Extensible Enumeration] Derivative Asset, Current, Statement of Financial Position [Extensible Enumeration] Compensation Actually Paid vs. Total Shareholder Return Compensation Actually Paid vs. Total Shareholder Return [Text Block] Payments of employee restricted stock tax withholdings Restricted Stock, Value, Shares Issued Net of Tax Withholdings Recognition of pension and other postretirement benefit obligations, net of tax Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, after Tax MNPI Disclosure Timed for Compensation Value MNPI Disclosure Timed for Compensation Value [Flag] Other long-term assets Other Assets, Noncurrent CASH FLOWS FROM FINANCING ACTIVITIES: Cash Provided by (Used in) Financing Activity, Continuing Operation [Abstract] Document Type Document Type Current derivative assets Derivative Asset, Current Loss on debt extinguishment Gain (Loss) on Extinguishment of Debt Accrued expenses and other current liabilities Accrued Liabilities, Current Schedule of Net Periodic Benefit (Income) Costs for Defined Benefit Pension Plans Schedule of Amounts Recognized in Other Comprehensive Income (Loss) [Table Text Block] Fair Value as of Grant Date Award Grant Date Fair Value Loss on sale of assets and other asset charges Gain (Loss) on Disposition of Assets Goodwill [Table] Goodwill [Table] Pay vs Performance Disclosure, Table Pay vs Performance [Table Text Block] Operating expenses Operating Costs and Expenses Arrangement Duration Trading Arrangement Duration Subsequent Event [Line Items] Subsequent Event [Line Items] Statement of Stockholders' Equity [Abstract] Statement of Stockholders' Equity [Abstract] Local Phone Number Local Phone Number Other Postretirement Benefits Plan Other Postretirement Benefits Plan [Member] Consolidation Items [Axis] Consolidation Items [Axis] Entity Address, Postal Zip Code Entity Address, Postal Zip Code Entity Registrant Name Entity Registrant Name Income (loss) 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] Insurance settlement receivable Insurance Settlements Receivable Commitments and contingencies Commitments and Contingencies Gross Carrying Amount Intangible Asset, Finite-Lived, before Accumulated Amortization Changed Peer Group, Footnote Changed Peer Group, Footnote [Text Block] Reclassification out of Accumulated Other Comprehensive Income [Axis] Reclassification out of Accumulated Other Comprehensive Income [Axis] 2030 Intangible Asset, Finite-Lived, Estimated Amortization Expense, Year Four Intangible Asset, Finite-Lived [Roll Forward] Intangible Asset, Finite-Lived [Roll Forward] Forgone Recovery due to Expense of Enforcement, Amount Forgone Recovery due to Expense of Enforcement, Amount Executive Category: Executive Category [Axis] Effect of one percent increase on fair value of interest rate fair value hedging instruments Effect of One Percent Increase on Fair Value of Interest Rate Fair Value Hedging Instruments Effect of One Percent Increase on Fair Value of Interest Rate Fair Value Hedging Instruments LIABILITIES AND STOCKHOLDERS’ EQUITY Liabilities and Equity [Abstract] Intangible Asset, Finite-Lived, Class [Domain] Intangible Asset, Finite-Lived, Class [Domain] Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block] Inventories, net Inventory, Net All Award Types Award Type [Domain] Non-PEO NEO Average Compensation Actually Paid Amount Non-PEO NEO Average Compensation Actually Paid Amount FAIR VALUE MEASUREMENTS OF FINANCIAL INSTRUMENTS Fair Value Disclosures [Text Block] Level 3 Fair Value, Inputs, Level 3 [Member] Payments for investments Payments to Acquire Long-Term Investments Supplemental disclosures of cash flow information: Supplemental Cash Flow Information [Abstract] 2027 Intangible Asset, Finite-Lived, Estimated Amortization Expense, Year One Repurchases of common stock (in shares) Treasury Stock, Shares, Acquired PEO Name PEO Name Accrued expenses and other liabilities Increase (Decrease) in Accrued Liabilities Net periodic benefit income, excluding service cost Net periodic benefit income, excluding service cost Net Periodic Defined Benefits Expense (Reversal of Expense), Excluding Service Cost Component Other Cash Flow Derivatives Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent [Member] Other Segment Reporting, Other Segment Item, Amount Repayments of Secured Debt Repayments of Secured Debt Stock Price or TSR Estimation Method Stock Price or TSR Estimation Method [Text Block] Entity Tax Identification Number Entity Tax Identification Number Derivative Instruments and Hedging Activities Disclosures [Table] Derivative Instruments and Hedging Activities Disclosures [Table] Long-term debt Notes Payable Gain on cash flow hedging relationships: Gain On Cash Flow Hedging Relationships [Abstract] Gain On Cash Flow Hedging Relationships Repurchases of common stock Treasury Stock, Value, Acquired, Cost Method Cash settlements Payments for Restructuring Long-term notes receivable, net, included within Other long-term assets Accounts and Financing Receivable, after Allowance for Credit Loss, Noncurrent Accounts payable Increase (Decrease) in Accounts Payable Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Base rate Base Rate [Member] Aggregate Erroneous Compensation Not Yet Determined Aggregate Erroneous Compensation Not Yet Determined [Text Block] Schedule of Reclassification Out of Accumulated Other Comprehensive Loss Reclassification out of Accumulated Other Comprehensive Income [Table 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] Debt Instrument [Axis] Debt Instrument [Axis] Measurement Frequency [Domain] Measurement Frequency [Domain] Subsequent Event [Table] Subsequent Event [Table] Share-based compensation Share-Based Payment Arrangement, Noncash Expense 2028 Intangible Asset, Finite-Lived, Estimated Amortization Expense, Year Two Accounting Policies [Table] Accounting Policies [Table] Accounting Policies Schedule of Debt Schedule of Debt [Table Text Block] Long-term Debt, Type [Domain] Long-Term Debt, Type [Domain] Basic earnings (loss) per share (in dollars per share) Basic earnings (loss) per share (in dollars per share) Earnings Per Share, Basic Gain from cybersecurity insurance recoveries Proceeds from Insurance Settlement, Operating Activities Repurchases of common stock Payments for Repurchase of Common Stock Total current assets Assets, Current Statistical Measurement [Axis] Statistical Measurement [Axis] Insider Trading Arrangements [Line Items] Award Type Award Type [Axis] Named Executive Officers, Footnote Named Executive Officers, Footnote [Text Block] Customer accounts receivable Accounts Receivable, after Allowance for Credit Loss, Current Dan Sills, et al. v. United Natural Foods, Inc., et al Dan Sills, et al. v. United Natural Foods, Inc., et al [Member] Dan Sills, et al. v. United Natural Foods, Inc., et al Retained earnings Retained Earnings (Accumulated Deficit) Restructuring and Related Activities [Abstract] Restructuring and Related Activities [Abstract] 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] Awards Close in Time to MNPI Disclosures Awards Close in Time to MNPI Disclosures [Table] 13-Week Period Ended Pension Plan [Member] Unused credit Debt Instrument, Unused Borrowing Capacity, Amount Common Stock Common Stock [Member] Fair Value Measurement [Domain] Fair Value Measurement [Domain] Reclassification out of Accumulated Other Comprehensive Income [Table] Reclassification out of Accumulated Other Comprehensive Income [Table] Restructuring and integration costs Employee Severance [Member] Compensation Actually Paid vs. Company Selected Measure Compensation Actually Paid vs. Company Selected Measure [Text Block] SIGNIFICANT ACCOUNTING POLICIES Organization, Consolidation and Presentation of Financial Statements Disclosure and Significant Accounting Policies [Text Block] Cover [Abstract] Cover [Abstract] Operating lease intangibles Operating Lease Intangible [Member] Operating Lease Intangible [Member] Reclassifications Reclassification, Comparability Adjustment [Policy Text Block] Derivative Contract [Domain] Derivative Contract [Domain] Equity Awards Adjustments Equity Awards Adjustments [Member] Noncurrent derivative liability Derivative Liability, Noncurrent Total liabilities and stockholders’ equity Liabilities and Equity Interest Rate Swap due June 30, 2028 Interest Rate Swap Due June 30, 2028 2 [Member] Interest Rate Swap Due June 30, 2028 2 Employee Stock Option Share-Based Payment Arrangement, Option [Member] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Noncontrolling interests Equity, Attributable to Noncontrolling Interest Segments [Axis] Segments [Axis] Additional 402(v) Disclosure Additional 402(v) Disclosure [Text Block] Schedule of Accounts, Notes, Loans and Financing Receivable Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block] Tabular List, Table Tabular List [Table Text Block] Other (income) expense, net Other (income) expense, net Other Nonoperating Income (Expense) Total United Natural Foods, Inc. Stockholders’ Equity Parent [Member] 2029 Intangible Asset, Finite-Lived, Estimated Amortization Expense, Year Three Remaining fiscal 2026 Intangible Asset, Finite-Lived, Estimated Amortization Expense, Remainder of Fiscal Year Name Awards Close in Time to MNPI Disclosures, Individual Name 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] Preferred stock, shares authorized (in shares) Preferred Stock, Shares Authorized Business transformation costs Gain (Loss) On Business Transformation Gain (Loss) On Business Transformation Pharmacy prescription files Pharmacy prescription files [Member] Pharmacy prescription files [Member] Preferred stock, $0.01 par value, authorized 5.0 shares; none issued or outstanding Preferred Stock, Value, Issued Adjustment to Compensation: Adjustment to Compensation [Axis] Number of suits pending Loss Contingency, Pending Claims, Number Amortization of amounts included in net periodic benefit income/Amortization of cash flow hedges Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax Hedging Designation [Domain] Hedging Designation [Domain] Restructuring Cost and Reserve [Line Items] Restructuring Cost and Reserve [Line Items] Rule 10b5-1 Arrangement Terminated Rule 10b5-1 Arrangement Terminated [Flag] Aggregate Erroneous Compensation Amount Aggregate Erroneous Compensation Amount Cash paid for interest Interest Paid, Excluding Capitalized Interest, Operating Activity Statement of Cash Flows [Abstract] Statement of Cash Flows [Abstract] Hedging Designation [Axis] Hedging Designation [Axis] Accounts receivable on behalf of the financial institution Accounts Receivable, on Behalf of Financial Institution Accounts Receivable, on Behalf of Financial Institution Credit Facility [Axis] Credit Facility [Axis] RESTRUCTURING, ACQUISITION AND INTEGRATION RELATED EXPENSES Restructuring and Related Activities Disclosure [Text Block] Aggregate Available Trading Arrangement, Securities Aggregate Available Amount Name Measure Name Fuel derivatives Fuel derivative [Member] Fuel derivative [Member] INCOME TAXES Income Tax Disclosure [Text Block] Term Loan Facility Term Loan Facility [Member] Term Loan Facility Accounts payable Accounts Payable, Current Pay vs Performance Disclosure [Line Items] Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV [Domain] ABL Loans ABL Loans [Member] ABL Loans Debt Instrument [Line Items] Debt Instrument [Line Items] Pay vs Performance Disclosure Pay vs Performance Disclosure [Table] Thereafter Finite-Lived Intangible Asset, Expected Amortization, Year Five And Thereafter Finite-Lived Intangible Asset, Expected Amortization, Year Five And Thereafter Retirement Plan Type [Domain] Retirement Plan Type [Domain] Additional Paid-in Capital Additional Paid-in Capital [Member] Entity Filer Category Entity Filer Category Indefinite-lived Intangible Assets [Axis] Intangible Asset, Indefinite-Lived, Class [Axis] Guarantor Obligations, Nature [Domain] Guarantor Obligations, Nature [Domain] Goodwill, impairment loss Goodwill, Impairment Loss Name Trading Arrangement, Individual Name Cash and cash equivalents Cash and Cash Equivalent Average Interest Rate Debt Instrument, Interest Rate During Period Multiemployer plan, contributions by employer Multiemployer Plan, Employer Contribution, Cost Company Selected Measure Amount Company Selected Measure Amount ABL Credit Facility, FILO Tranche ABL Credit Facility, FILO Tranche [Member] ABL Credit Facility, FILO Tranche Depreciation and amortization Depreciation, Depletion and Amortization SOFR Secured Overnight Financing Rate (SOFR) [Member] Entity Address, Address Line Two Entity Address, Address Line Two Net income (loss) including noncontrolling interests Net income (loss) including noncontrolling interests Net income (loss) Total reclassifications, net of tax Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Leased assets obtained in exchange for new finance lease liabilities Right-of-Use Asset Obtained in Exchange for Finance Lease Liability Non-PEO NEO Non-PEO NEO [Member] Senior Notes Senior Notes [Member] Entity Address, Address Line One Entity Address, Address Line One Leased assets obtained in exchange for new operating lease liabilities Right-of-Use Asset Obtained in Exchange for Operating Lease Liability Interest Rate Swap due June 3, 2027 Interest Rate Swap Due June 3, 2027 1 [Member] Interest Rate Swap Due June 3, 2027 1 Provision (benefit) for income taxes Provision (benefit) for income taxes Income Tax Expense (Benefit) Guarantor obligations, guarantees term (in years) Guarantor Obligations, Guarantees Term Guarantor Obligations, Guarantees Term Adjustments to reconcile net income (loss) to net cash provided by operating activities: Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity, Noncash Item [Abstract] Cost of sales Cost of sales Cost of Product and Service Sold Non-cancelable future purchase obligations Purchase Obligation Award Timing Method Award Timing Method [Text Block] NET (DECREASE) INCREASE IN CASH AND CASH EQUIVALENTS Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Period Increase (Decrease), Including Exchange Rate Effect and Discontinued Operation Forecast Forecast [Member] Accounts receivable, net Accounts receivable, net Accounts and Financing Receivable, after Allowance for Credit Loss, Current Forgone Recovery, Explanation of Impracticability Forgone Recovery, Explanation of Impracticability [Text Block] Schutte and Yarberry v. SuperValu, New Albertson's, Inc., et al Schutte and Yarberry v. SuperValu, New Albertson;s, Inc., et al [Member] Schutte and Yarberry v. SuperValu, New Albertson;s, Inc., et al [Member] Net pension and other postretirement benefit income Pension and Other Postretirement Benefits Expense (Reversal of Expense), Noncash Net periodic benefit income, excluding service cost Defined Benefit Plan, Amortization of Gain (Loss) RECENTLY ADOPTED AND ISSUED ACCOUNTING PRONOUNCEMENTS Accounting Standards Update and Change in Accounting Principle [Text Block] Net income (loss) attributable to United Natural Foods, Inc. Net Income (Loss) Attributable to Parent Long-term Debt, Type [Axis] Long-Term Debt, Type [Axis] Erroneous Compensation Analysis Erroneous Compensation Analysis [Text Block] Proceeds from dispositions of assets Proceeds from Sale of Property, Plant, and Equipment Statement [Table] Statement [Table] Restatement Determination Date: Restatement Determination Date [Axis] Segment Adjusted EBITDA Segment Adjusted EBITDA Segment Adjusted EBITDA Schedule of Accumulated Other Comprehensive Loss Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] Interest Rate Swap due June 3, 2027 Interest Rate Swap Due June 3, 2027 2 [Member] Interest Rate Swap Due June 3, 2027 2 Litigation settlement amount Litigation Settlement, Amount Awarded to Other Party Derivative Instruments and Hedging Activities Disclosures [Line Items] Derivative Instruments and Hedging Activities Disclosures [Line Items] Number of new causes of action Loss Contingency, New Claims Filed, Number ABL Credit Facility, Revolver Loans ABL Credit Facility, Revolver Loans [Member] ABL Credit Facility, Revolver Loans Complaint from Various Health Plans Complaint From Various Health Plans [Member] Complaint From Various Health Plans Alleged damages (in excess of) Loss Contingency, Damages Sought, Value Pension Benefits Adjustments, Footnote Pension Benefits Adjustments, Footnote [Text Block] Cybersecurity incident, expenses Cybersecurity Incident, Expense Cybersecurity Incident, Expense Derivative Instruments and Hedging Activities Disclosure [Abstract] Derivative Instruments and Hedging Activities Disclosure [Abstract]