Document Information [Table] Document Information [Line Items] Document Type Document Quarterly Report Document Period End Date Document Transition Report Securities Act File Number Entity Registrant Name Entity Incorporation, State or Country Code Entity Tax Identification Number Entity Address, Address Line One Entity Address, City or Town Entity Address, State or Province Entity Address, Postal Zip Code City Area Code Local Phone Number Title of 12(b) Security Trading Symbol Security Exchange Name Entity Current Reporting Status Entity Interactive Data Current Entity Filer Category Entity Small Business Entity Emerging Growth Company Entity Shell Company Entity Common Stock, Shares Outstanding Entity Central Index Key Current Fiscal Year End Date Document Fiscal Year Focus Document Fiscal Period Focus Amendment Flag Condensed Consolidated Statements of Operations Statement [Table] Statement [Line Items] Revenue from Contract with Customer, Excluding Assessed Tax Net sales Cost of Goods and Services Sold Cost of goods sold Segment cost of goods sold Gross Profit Gross profit Selling, General and Administrative Expense Selling, general and administrative expenses Segment SG&A expenses Goodwill, Impairment Loss Impairment Impairment charges on goodwill Goodwill impairment charges Impairment of Intangible Assets, Indefinite-Lived (Excluding Goodwill) Impairment of Intangible Assets Other intangible asset impairment charges Gain (Loss) on Disposition of Business Loss (gain) on divestitures Loss (gain) on divestitures Loss on divestitures Operating Income (Loss) Operating profit (loss) Operating profit Net Periodic Defined Benefits Expense (Reversal of Expense), Excluding Service Cost Component Pension and postretirement non-service income Interest Income (Expense), Operating Interest expense, net Interest Income (Expense), Net Interest expense, net Income (Loss) from Equity Method Investments Equity method investment earnings Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Income (loss) before income taxes Income Tax Expense (Benefit) Income tax expense (benefit) Income tax expense (benefit) Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Net income (loss) Net income (loss) Net Income (Loss) Attributable to Noncontrolling Interest Less: Net income attributable to noncontrolling interests Net income (loss) attributable to Conagra Brands, Inc. Net income (loss) attributable to Conagra Brands, Inc. common stockholders: Earnings (loss) per share - basic Earnings Per Share, Basic Net income (loss) attributable to Conagra Brands, Inc. common stockholders (in dollars per share) Earnings (loss) per share - diluted Earnings Per Share, Diluted Net income (loss) attributable to Conagra Brands, Inc. common stockholders (in dollars per share) Condensed Consolidated Statements of Comprehensive Income (Loss) Income (Loss), Including Portion Attributable to Noncontrolling Interest, before Tax Net income (loss), pre-tax amount Income Tax Expense (Benefit), Continuing Operations, Discontinued Operations Net income (loss), tax (expense) benefit Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification and Tax Unrealized derivative adjustments, pre-tax amount Derivatives designated as cash flow hedges, deferred gain Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification, Tax Unrealized derivative adjustments, tax (expense) benefit Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification, after Tax Unrealized derivative adjustments, after-tax amount Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, before Tax Reclassification for derivative adjustments included in net income (loss), pre-tax amount Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, Tax Reclassification for derivative adjustments included in net income (loss), tax (expense) benefit Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, after Tax Reclassification for derivative adjustments included in net income (loss), after-tax amount Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Gain (Loss), before Reclassification and Tax Unrealized currency translation gains (losses), pre-tax amount Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Gain (Loss) Arising During Period, Net of Tax Unrealized currency translation gains (losses), after-tax amount Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Reclassification Adjustment from AOCI, Realized upon Sale or Liquidation, before Tax Reclassification for currency translation losses in connection with the sale of Agro Tech Foods Limited, pre-tax amount Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Reclassification Adjustment from AOCI, Realized upon Sale or Liquidation, Net of Tax Reclassification for currency translation losses in connection with the sale of Agro Tech Foods Limited, after-tax amount Other Comprehensive (Income) Loss, Defined Benefit Plan, before Reclassification Adjustment and Tax Unrealized pension and postretirement benefit obligations, pre-tax amount Other Comprehensive (Income) Loss, Defined Benefit Plan, before Reclassification Adjustment, Tax Unrealized pension and postretirement benefit obligations, tax (expense) benefit Other Comprehensive (Income) Loss, Defined Benefit Plan, before Reclassification Adjustment, after Tax Unrealized pension and postretirement benefit obligations, after-tax amount Other Comprehensive (Income) Loss, Defined Benefit Plan, Reclassification Adjustment from AOCI, before Tax Reclassification for pension and postretirement benefit obligations included in net income (loss), pre-tax amount Other Comprehensive (Income) Loss, Defined Benefit Plan, Reclassification Adjustment from AOCI, Tax Reclassification for pension and postretirement benefit obligations included in net income (loss), tax (expense) benefit Other Comprehensive (Income) Loss, Defined Benefit Plan, Reclassification Adjustment from AOCI, after Tax Reclassification for pension and postretirement benefit obligations included in net income (loss), after-tax amount Amount of comprehensive income (loss), before tax including portion attributable to noncontrolling interest, for the reporting period. Comprehensive Income Loss Before Tax Including Portion Attributable To Noncontrolling Interest Comprehensive income (loss), pre-tax amount Amount of tax related to comprehensive income (loss) including portion attributable to noncontrolling interest during the reporting period. ComprehensiveIncomeLossTaxIncludingPortionAttributableToNoncontrollingInterest Comprehensive income (loss), tax (expense) benefit Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest Comprehensive income (loss), after-tax amount Amount before tax of increase (decrease) in equity from transactions and other events and circumstances from net income (loss) and other comprehensive income (loss), attributable to noncontrolling interests. Excludes changes in equity resulting from investments by owners and distributions to owners. Comprehensive Income Loss Before Tax Attributable To Noncontrolling Interest Comprehensive income (loss) attributable to noncontrolling interests, pre-tax amount (see Note 3) Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest Comprehensive income (loss) attributable to noncontrolling interests, after-tax amount (see Note 3) Amount before tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners. Comprehensive Income Loss Before Tax Attributable To Parent Comprehensive income (loss) attributable to Conagra Brands, Inc., pre-tax amount Amount of tax related to comprehensive income (loss) attributable to the parent during the reporting period. Comprehensive Income Loss Tax Attributable To Parent Comprehensive income (loss) attributable to Conagra Brands, Inc., tax (expense) benefit Comprehensive Income (Loss), Net of Tax, Attributable to Parent Comprehensive income (loss) attributable to Conagra Brands, Inc., after-tax amount Condensed Consolidated Balance Sheets Assets [Abstract] ASSETS Cash and Cash Equivalents, at Carrying Value Cash and cash equivalents Receivables, Net, Current Receivables, less allowance for doubtful accounts of $4.6 and $3.6 Inventory, Net Inventories Total Prepaid Expense and Other Assets, Current Prepaid expenses and other current assets Disposal Group, Including Discontinued Operation, Assets, Current Current assets held for sale Current assets Assets, Current Total current assets Property, Plant and Equipment, Net [Abstract] Property, plant and equipment Property, plant and equipment Property, plant and equipment Property, Plant, and Equipment and Finance Lease Right-of-Use Asset, Accumulated Depreciation and Amortization Less accumulated depreciation Property, Plant, and Equipment and Finance Lease Right-of-Use Asset, after Accumulated Depreciation and Amortization Property, plant and equipment, net Goodwill Balance Balance Goodwill Intangible Assets, Net (Excluding Goodwill) Brands, trademarks and other intangibles, net Other Assets, Noncurrent Other assets Disposal Group, Including Discontinued Operation, Assets, Noncurrent Noncurrent assets held for sale Noncurrent assets (including goodwill) Assets Assets Current liabilities Short-Term Debt Notes payable Long-Term Debt and Lease Obligation, Current Current installments of long-term debt Accounts Payable, Current Accounts and other payables Employee-related Liabilities, Current Accrued payroll Other Accrued Liabilities, Current Other accrued liabilities Disposal Group, Including Discontinued Operation, Liabilities, Current Current liabilities held for sale Current liabilities Liabilities, Current Total current liabilities Senior Notes, Noncurrent Senior long-term debt, excluding current installments Deferred Income Tax Liabilities, Net Deferred income taxes Other Liabilities, Noncurrent Other noncurrent liabilities Disposal Group, Including Discontinued Operation, Liabilities, Noncurrent Noncurrent liabilities held for sale Noncurrent liabilities Liabilities Total liabilities Common stockholders' equity Common Stock, Value, Issued Common stock of $5 par value, authorized 1,200,000,000 shares; issued 584,219,229 Additional Paid in Capital Additional paid-in capital Retained Earnings (Accumulated Deficit) Retained earnings Accumulated Other Comprehensive Income (Loss), Net of Tax Accumulated other comprehensive income Treasury Stock, Common, Value Less treasury stock, at cost, 105,782,073 and 106,846,304 common shares Equity, Including Portion Attributable to Noncontrolling Interest Balance Balance Accumulated other comprehensive income (loss) Total stockholders' equity Unamortized amount Liabilities and Equity Liabilities and Equity Accounts Receivable, Allowance for Credit Loss, Current Allowance for doubtful accounts Common Stock, Par or Stated Value Per Share Common Stock, Par or Stated Value Per Share (in dollars per share) Common Stock, Shares Authorized Common Stock, Shares Authorized (in shares) Common Stock, Shares, Issued Common stock, shares issued (in shares) Treasury Stock, Common, Shares Treasury stock, shares (in shares) Condensed Consolidated Statements of Cash Flows Cash flows from operating activities: Adjustments to reconcile net income (loss) to net cash flows from operating activities: Depreciation, Depletion and Amortization Depreciation and amortization Asset Impairment Charges Asset impairment charges Income (Loss) from Equity Method Investments, Net of Dividends or Distributions Equity method investment earnings less than (in excess of) distributions Share-Based Payment Arrangement, Noncash Expense Stock-settled share-based payments expense Payment for Pension Benefits Contributions to pension plans Pension Expense (Reversal of Expense), Noncash Pension benefit Other Operating Activities, Cash Flow Statement Other items Change in operating assets and liabilities excluding effects of business acquisitions and dispositions: Increase (Decrease) in Accounts Receivable Receivables Increase (Decrease) in Inventories Inventories Amount of increase (decrease) in deferred income taxes and income taxes payable, net in the reporting period. Increase Decrease In Deferred Income Taxes And Income Taxes Payable Net Deferred income taxes and income taxes payable, net Increase (Decrease) in Prepaid Expense and Other Assets Prepaid expenses and other current assets Increase (Decrease) in Accounts Payable, Trade Accounts and other payables Increase (Decrease) in Employee Related Liabilities Accrued payroll Increase (Decrease) in Other Accrued Liabilities Other accrued liabilities Increase (decrease) related to litigation receivable. Increase Decrease Related to Litigation Receivable Litigation receivables, net of recoveries Amount of increase (decrease) in litigation accruals. Increase Decrease In Litigation Accruals Litigation accruals, net of payments Net Cash Provided by (Used in) Operating Activities Net cash flows from operating activities Cash flows from investing activities: Payments to Acquire Property, Plant, and Equipment Additions to property, plant and equipment Proceeds from Sale of Property, Plant, and Equipment Sale of property, plant and equipment Payments to Acquire Businesses, Net of Cash Acquired Purchase of businesses, net of cash acquired Purchase price of business Proceeds from Divestiture of Businesses, Net of Cash Divested Proceeds from divestitures, net of cash divested Payments for (Proceeds from) Other Investing Activities Other items Net Cash Provided by (Used in) Investing Activities Net cash flows from investing activities Cash flows from financing activities: Proceeds from Short-Term Debt, Maturing in More than Three Months Issuance of short-term borrowings, maturities greater than 90 days Repayments of Short-Term Debt, Maturing in More than Three Months Repayment of short-term borrowings, maturities greater than 90 days Amount of cash inflow (outflow) from short-term debt classified as other. Proceeds From Repayments Of Other Short Term Debt Net repayment of other short-term borrowings, maturities less than or equal to 90 days Proceeds from Issuance of Other Long-Term Debt Issuance of long-term debt Repayments of Long-Term Debt Repayment of long-term debt Repayments of Long-Term Debt Payments of Financing Costs Debt issuance costs Payments for Repurchase of Common Stock Repurchase of Conagra Brands, Inc. common shares Payments of Dividends Cash dividends paid The net cash flow from exercise of Stock options and issuance of other stock awards, including tax withholdings. Exercise Of Stock Options And Issuance Of Other Stock Awards Including Tax Withholdings Exercise of stock options and issuance of other stock awards, including tax withholdings Proceeds from (Payments for) Other Financing Activities Other items Net Cash Provided by (Used in) Financing Activities Net cash flows from financing activities Effect of Exchange Rate on Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Including Disposal Group and Discontinued Operations Effect of exchange rate changes on cash and cash equivalents Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect Net change in cash and cash equivalents, including cash balances classified as assets held for sale Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect, Disposal Group, Including Discontinued Operations Less: Net change in cash balances classified as assets held for sale Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect, Continuing Operations Net change in cash and cash equivalents Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Including Disposal Group and Discontinued Operations Cash and cash equivalents at end of period Cash and cash equivalents at beginning of period SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Significant Accounting Policies [Text Block] SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES ACQUISITIONS Business Combination Disclosure [Text Block] ACQUISITIONS DIVESTITURES AND ASSETS HELD FOR SALE Disposal Groups, Including Discontinued Operations, Disclosure [Text Block] DIVESTITURES AND ASSETS HELD FOR SALE RESTRUCTURING ACTIVITIES Restructuring and Related Activities Disclosure [Text Block] RESTRUCTURING ACTIVITIES DEBT AND REVOLVING CREDIT FACILITY Disclosure Text Block [Abstract] DEBT AND REVOLVING CREDIT FACILITY Long-Term Debt [Text Block] DEBT AND REVOLVING CREDIT FACILITY No definition available. FINANCING ARRANGEMENTS Supplier Finance Program [Text Block] FINANCING ARRANGEMENTS GOODWILL AND OTHER IDENTIFIABLE INTANGIBLE ASSETS Goodwill and Intangible Assets Disclosure [Text Block] GOODWILL AND OTHER IDENTIFIABLE INTANGIBLE ASSETS DERIVATIVE FINANCIAL INSTRUMENTS Derivative Instruments and Hedging Activities Disclosure [Text Block] DERIVATIVE FINANCIAL INSTRUMENTS SHARE-BASED PAYMENTS Share-Based Payment Arrangement [Text Block] SHARE-BASED PAYMENTS EARNINGS (LOSS) PER SHARE Earnings Per Share [Text Block] EARNINGS (LOSS) PER SHARE INVENTORIES Inventory Disclosure [Text Block] INVENTORIES INCOME TAXES Income Tax Disclosure [Text Block] INCOME TAXES CONTINGENCIES Commitments and Contingencies Disclosure [Text Block] CONTINGENCIES PENSION AND POSTRETIREMENT BENEFITS