Granted (shares) Units granted (shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period Short-term foreign bank loans against the lines of credit Line of Credit, Current Document Type Document Type Aggregate intrinsic value of options outstanding Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value Other (income) expense, net Other Nonoperating Income (Expense) Other Nonoperating Income (Expense) Contingencies Commitments and Contingencies Disclosure [Text Block] Granted (shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross Treasury Common Stock Treasury Stock [Member] Accounts payable and accrued liabilities Increase (Decrease) in Accounts Payable and Accrued Liabilities Performance assumption change (shares) Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Performance Assumption Change The change in the number of shares under a share-based award plan other than a stock option plan due to a change in the performance assumptions. Noncontrolling Interest [Table] Noncontrolling Interest [Table] Segments [Axis] Segments [Axis] Pension and Other Post-Retirement Benefit Plans Retirement Benefits [Text Block] Vested (USD per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value Schedule of Restructuring and Related Costs [Table] Schedule of Restructuring and Related Costs [Table] Significant other unobservable inputs (Level 3) Fair Value, Inputs, Level 3 [Member] Goodwill, adjustments Measurement period adjustments Goodwill, Purchase Accounting Adjustments Net actuarial gain (loss) and prior service cost, after tax Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss) Arising During Period, after Tax Derivative asset Derivative Asset Dividends paid per share: Dividends (including dividend equivalents): Dividends, Common Stock [Abstract] Statistical Measurement [Domain] Statistical Measurement [Domain] LIABILITIES AND STOCKHOLDERS’ EQUITY Liabilities and Equity [Abstract] Line of Credit Line of Credit [Member] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Restructuring Cost and Reserve [Line Items] Restructuring Cost and Reserve [Line Items] Amortization of ROU assets, Finance lease cost Finance Lease, Right-of-Use Asset, Amortization Deferred income taxes Deferred Income Tax Liabilities, Net Preferred Stock Preferred Stock [Member] Security Exchange Name Security Exchange Name Other intangibles Total other intangible assets Intangible Assets, Net (Excluding Goodwill) Capitalized interest Interest Costs Capitalized Adjustment Long-term borrowings, net of debt issuance costs Proceeds from Issuance of Long-term Debt Operating profit Operating profit Operating Income (Loss) Total current liabilities Liabilities, Current Noncontrolling Interest Noncontrolling Interest Disclosure [Text Block] Other comprehensive income - foreign currency translation adjustments Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax, Portion Attributable to Noncontrolling Interest Prepaid expenses and other Prepaid Expense and Other Assets, Current Outstanding at beginning of year (USD per share) Outstanding as of September 27, 2020 (USD per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value 2.900% Notes (1) Notes 2.90% Due 2020 [Domain] Notes 2.90% Due 2020 Schedule of Business Acquisitions, by Acquisition [Table] Schedule of Business Acquisitions, by Acquisition [Table] Total lease payments Finance Lease, Liability, Payment, Due Repurchase of common stock Payments for Repurchase of Common Stock ASSETS Assets [Abstract] Accounting Policies [Abstract] Accounting Policies [Abstract] Revenue, Major Customer [Line Items] Revenue, Major Customer [Line Items] Entity Address, State or Province Entity Address, State or Province Vested (shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period Operating cash flows from operating leases Operating Lease, Payments Accounts payable Accounts Payable, Current Total other comprehensive income (loss), pre-tax amount Other Comprehensive Income (Loss), before Tax Foreign currency translation Goodwill, Foreign Currency Translation Gain (Loss) Total lease liabilities Operating & Finance, Lease Liability Present value of lessee's discounted obligation for lease payments from operating and finance leases. Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Retained earnings Retained Earnings (Accumulated Deficit) Operating lease ROU assets Operating Lease, Right-of-Use Asset (Losses) gains on cash flow hedging derivatives, after-tax amount Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification, after Tax Reallocation of undistributed earnings Undistributed Earnings (Loss) Allocated to Participating Securities, Diluted Treasury Stock, Shares, Acquired Treasury Stock, Shares, Acquired 2021 Lessee, Operating Lease, Liability, to be Paid, Year One Class B common stock Common Class B [Member] Outstanding shares at beginning of year (shares) Outstanding as of September 27, 2020 (shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number 2021 Finance Lease, Liability, to be Paid, Year One Stockholders’ equity: Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest [Abstract] 2024 Lessee, Operating Lease, Liability, to be Paid, Year Four Employee service share-based compensation, nonvested awards, compensation cost not yet recognized Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount Allocation of undistributed earnings Undistributed Earnings (Loss) Allocated to Participating Securities, Basic Long-term debt Long-term Debt and Lease Obligation Net (gains) losses on mark-to-market valuation of commodity derivative positions recognized in unallocated derivative (gains) losses Net Mark to Market Valuation of Certain Derivative Positions Recognized in Unallocated Derivative (Gains) Losses Changes in the values of derivative positions that is recorded in unallocated derivative (gains)/losses Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), 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Treasury stock is issued but is not outstanding. This stock has no voting rights and receives no dividends. Note that treasury stock may be recorded at its total cost or separately as par (or stated) value and additional paid in capital. Note: number of treasury shares concept is in another section within stockholders' equity. Schedule of Additional Product Line Sales Revenue from External Customers by Products and Services [Table Text Block] Effect of exchange rate changes on cash and cash equivalents Effect of Exchange Rate on Cash and Cash Equivalents Income Statement Location [Axis] Income Statement Location [Axis] Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Income Statement Location [Domain] Income Statement Location [Domain] 2022 Lessee, Operating Lease, Liability, to be Paid, Year Two Financing Activities Net Cash Provided by (Used in) Financing Activities [Abstract] Advertising, promotion and product allowances Accrued Marketing Costs, Current Selling, marketing and administrative expense Selling, General and Administrative Expense Derivative, notional amount Derivative, Notional Amount Amortization of Intangible Assets Amortization of Intangible Assets Foreign exchange contracts Foreign Exchange Contract [Member] Schedule of Components of Lease Expense Lease, Cost [Table Text Block] Line of Credit Facility [Table] Line of Credit Facility [Table] Derivative, Fair Value, Net Derivative, Fair Value, Net 2023 Lessee, Operating Lease, Liability, to be Paid, Year Three Customer-related Customer-Related Intangible Assets [Member] Other non-current assets Total other non-current assets Other Assets, Noncurrent Segment Information Segment Reporting Disclosure [Text Block] 2.650% Notes (2) Notes 2.650% Notes Due 2050 [Member] Notes 2.650% Notes Due 2050 2.625% Notes Notes 2.625% Due 2023 [Member] Notes 2.625% Due 2023 [Member] Operating cash flows from finance leases Finance Lease, Interest Payment on Liability Total assets Assets Schedule of Supplemental Balance Sheet Information Schedule of Supplemental Balance Sheet Information [Table Text Block] Schedule of Supplemental Balance Sheet Information [Table Text Block] Scenario [Axis] Scenario [Axis] 3.200% Notes Notes 3.20% Due 2025 [Member] Notes 3.20% Due 2025 [Member] Revenue from Contract with Customer Benchmark Revenue from Contract with Customer Benchmark [Member] Less: Imputed interest Lessee Operating and Fiannce Lease Liability Undiscounted Excess Amount Amount of lessee's undiscounted obligation for lease payments in excess of discounted obligation for lease payments for operating and finance leases. Line Of Credit Facility, Accordion Feature Increase Limit Line Of Credit Facility, Accordion Feature Increase Limit Line Of Credit Facility, Accordion Feature Increase Limit Interest expense Interest Expense, Debt Net Gain (Loss) On Commodity Derivative Positions Reclassified From Unallocated Derivative To Segment Income Net gains on commodity derivative positions reclassified from unallocated to segment income Net Gain Loss On Commodity Derivative Positions Reclassified From Unallocated Derivative Gains Losses To Segment Income The amount of gain (loss) from commodity derivative positions reclassified from unallocated derivative (gains) losses to segment income. Corporate Corporate Segment [Member] Outstanding at beginning of year (shares) Outstanding as of September 27, 2020 Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number Title of 12(b) Security Title of 12(b) Security Amortization of prior service (credit) cost Defined Benefit Plan, Amortization of Prior Service Cost (Credit) Finance leases Finance Lease, Liability, Payment, Due [Abstract] Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value Accrued income taxes Accrued Income Taxes, Current Other non-current assets Other Miscellaneous Assets, Non-Current Other Miscellaneous Assets, Non-Current Antidilutive Securities [Axis] Antidilutive Securities [Axis] Basis of Presentation Business Description and Basis of Presentation [Text Block] Cost of Sales Cost of Sales [Member] Schedule of Treasury Stock Activity Schedule of Common Stock Outstanding Roll Forward [Table Text Block] Schedule of Maturity of Finance Lease Liabilities Finance Lease, Liability, Fiscal Year Maturity [Table Text Block] Adjustment to disposal group Impairment Charge on Reclassified Assets Interest expense Interest Expense Schedule of Depreciation and Amortization Expense Included within Segment Income Reconciliation of Other Significant Reconciling Items from Segments to Consolidated [Table Text Block] 2020 business realignment charges Restructuring Charges, Business Realignment Reserve Restructuring Charges, Business Realignment Reserve Business Acquisition and Divestitures Mergers, Acquisitions and Dispositions Disclosures [Text Block] Depreciation and amortization Depreciation, Depletion and Amortization Product and Service [Axis] Product and Service [Axis] 0.900% Notes (2) Notes 0.900% Notes Due 2025 [Member] Notes 0.900% Notes Due 2025 Derivative liability, gross liabilities Derivative Liability, Cash Transfers Receivable (Payable), Change In Quoted Market Prices On The Last Day Of Trading Derivative Liability, Cash Transfers Receivable (Payable), Change In Quoted Market Prices On The Last Day Of Trading Total liabilities Liabilities ONE Brands, LLC ONE Brands, LLC [Member] ONE Brands, LLC [Member] Minimum length of time, hedged in cash flow hedge Minimum Length of Time Hedged in Cash Flow Hedge Minimum length of time over which the entity is hedging its exposure to the variability in future cash flows for forecasted transactions, excluding those forecasted transactions related to the payment of variable interest on existing financial instruments, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Employee service share-based compensation, nonvested awards, compensation cost not yet recognized, period for recognition Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition Expected volatility Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate Retirement Plan Type [Axis] Retirement Plan Type [Axis] Other program costs Other Restructuring [Member] All other countries Non-US [Member] Less: Imputed interest Lessee, Operating Lease, Liability, Undiscounted Excess Amount Finite-lived trademarks, gross Finite-Lived Trademarks, Gross Commitments and Contingencies Disclosure [Abstract] Commitments and Contingencies Disclosure [Abstract] Quoted prices in active markets of identical assets (Level 1) Fair Value, Inputs, Level 1 [Member] Reallocation of total earnings as a result of conversion of Class B common stock to Common stock Distributed Earnings Inventories Increase (Decrease) in Inventories (Losses) gains on cash flow hedging derivatives, pre-tax amount Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification and Tax Fair Value, Recurring and Nonrecurring [Table] Fair Value, Recurring and Nonrecurring [Table] Raw materials Inventory, Raw Materials, Net of Reserves Maximum length of time, hedged in cash flow hedge Maximum Length of Time Hedged in Cash Flow Hedge Other assets and liabilities Increase (Decrease) in Other Operating Assets and Liabilities, Net Dividends paid per share (USD per share) Common Stock, Dividends, Per Share, Cash Paid Net impact of interest rate swaps, debt issuance costs and unamortized debt discounts Debt Instrument, Impact of Derivatives, Unamortized Discount (Premium), and Debt Issuance Costs, Net Debt Instrument, Impact of Derivatives, Unamortized Discount (Premium), and Debt Issuance Costs, Net Debt Instrument [Axis] Debt Instrument [Axis] Additional Paid-in Capital Additional Paid-in Capital [Member] Schedule of Other (Income) Expense, Net Schedule of Other Nonoperating Income (Expense) [Table Text Block] 2020 (rest of year) Lessee Operating and Financing Lease, Liability, to be Paid, Remainder of Fiscal Year Amount of lessee's undiscounted obligation for lease payment for operating and finance leases to be paid in remainder of current fiscal year. Fair Value Hedging Fair Value Hedging [Member] Antidilutive Securities, Name [Domain] Antidilutive Securities, Name [Domain] Operating Segments Operating Segments [Member] Other Other Operating Activities, Cash Flow Statement Class of Stock [Line Items] Class of Stock [Line Items] Repurchase of common stock Treasury Stock, Value, Acquired, Cost Method Derivative liability Derivative Liability Adjustments to reconcile net income to net cash provided by operating activities: Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Interest on lease liabilities, Finance lease cost Finance Lease, Interest Expense Long-term debt, fair value Long-term Debt, Excluding Current Maturities, Fair Value Long-term Debt, Excluding Current Maturities, Fair Value Entity Information [Line Items] Entity Information [Line Items] Income Tax Disclosure [Abstract] Income Tax Disclosure [Abstract] Revolving Credit Facility Revolving Credit Facility [Member] Schedule of Goodwill [Table] Schedule of Goodwill [Table] 4.125% Notes Notes 4.125% Due 2020 [Member] Notes 4.125% Due 2020 [Member] Income before income taxes Income before income taxes Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Derivative, term of contract Derivative, Term of Contract Property, plant and equipment, net Property, Plant and Equipment [Member] Outstanding (USD per share) Outstanding (USD per share) Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price Business acquisitions, net of cash and cash equivalents acquired Payments to Acquire Businesses, Net of Cash Acquired Concentration Risk Type [Axis] Concentration Risk Type [Axis] Property, plant and equipment, gross Property, Plant and Equipment, Gross Incremental common shares attributable to dilutive effect of share-based payment arrangements Incremental Common Shares Attributable to Dilutive Effect of 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Operating lease liabilities, extensible list Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List] Schedule of Net Sales and Earnings by Segment Schedule of Segment Reporting Information, by Segment [Table Text Block] Pension and post-retirement benefit plans: Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, after Tax [Abstract] Prepaid expenses Prepaid Expense Income Statement [Abstract] Income Statement [Abstract] Accumulated Other Comprehensive Income (Loss) AOCI Attributable to Parent [Member] Operating lease liabilities Operating Lease, Liability, Noncurrent Prepaid expenses and other current assets Increase (Decrease) in Prepaid Expense and Other Assets Other intangible assets Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles Other (income) expense, net Other Nonoperating, Gain (Loss) Other Nonoperating, Gain (Loss) Schedule of Segment 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Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). 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Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). 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This stock has no voting rights and receives no dividends. Total leased assets Lease, Right-of-Use Asset Lease, Right-of-Use Asset Foreign currency translation gains (losses) during period, tax Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Tax Accumulated depreciation Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Margin for Growth Program Margin for Growth Program [Member] Margin for Growth Program [Member] Net income per share—diluted: Earnings Per Share, Diluted [Abstract] Exercised (shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period International and Other International and Other Segment [Member] International and Other Segment [Member] North America North America Segment [Member] North America Segment [Member] Net increase (decrease) in cash and cash equivalents Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect Unallocated corporate expense Nonoperating Income (Expense) Finance lease ROU assets, net Finance Lease, Right-of-Use Asset, after Accumulated Amortization Hedging Relationship [Domain] Hedging Relationship [Domain] Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] Schedule of Maturity of Operating Lease Liabilities Lessee, Operating Lease, Liability, Maturity [Table Text Block] Employee stock options Share-based Payment Arrangement, Option [Member] Equity, Class of Treasury Stock [Line Items] Equity, Class of Treasury Stock [Line Items] Total weighted-average shares—basic (shares) Weighted Average Number of Shares Outstanding, Basic 2024 Lessee Operating and Financing Lease, Liability, to be Paid, Year Four Amount of lessee's undiscounted obligation for lease payment for operating and finance leases to be paid in fourth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). 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Total long-term debt, fair value Long-term Debt, Fair Value Class of Stock [Axis] Class of Stock [Axis] Provision for income taxes Income Tax Expense (Benefit) Total earnings—diluted Participating Securities, Distributed and Undistributed Earnings (Loss), Diluted Income taxes paid Income Taxes Paid, Net Cash and cash equivalents Cash and cash equivalents, beginning of period Cash and cash equivalents, end of period Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents (Losses) gains on cash flow hedging derivatives, tax (expense) benefit Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification, Tax Confectionery and confectionery-based portfolio Confectionery and Confectionery-based Portfolio [Domain] Confectionery and Confectionery-based Portfolio Indefinite-lived Intangible Assets, Major Class Name [Domain] Indefinite-lived Intangible Assets, Major Class Name [Domain] Accrued liabilities Total accrued liabilities Accrued Liabilities, Current Net income per share - 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Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). 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