Lessee, operating lease, lease not yet commenced, term of contract Lessee, Operating Lease, Lease Not yet Commenced, Term of Contract 2023 Finance Lease, Liability, Payments, Due Year Four Total stockholders’ equity Beginning balance, stockholders' equity Ending balance, stockholders' equity Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest Other (Income) Expense, Net Other Income and Other Expense Disclosure [Text Block] Other Assets Other Assets [Member] Significant other unobservable inputs (Level 3) Fair Value, Inputs, Level 3 [Member] Reclassification to earnings, pre-tax amount Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, before Tax 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. Stock-based compensation APIC, Share-based Payment Arrangement, Increase for Cost Recognition Segment Reconciling Items Segment Reconciling Items [Member] 2021 Finance Lease, Liability, Payments, Due Year Two Total current liabilities Liabilities, Current Goodwill [Line Items] Goodwill [Line Items] Indefinite-lived intangible assets, excluding goodwill Indefinite-lived Intangible Assets (Excluding Goodwill) Interest cost Defined Benefit Plan, Interest Cost Treasury stock, shares (shares) Treasury Stock, Shares Granted (shares) Units granted (shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period 2020 Finance Lease, Liability, Payments, Due Next Twelve Months Recent Accounting Pronouncements New Accounting Pronouncements, Policy [Policy Text Block] Cost of sales Cost of Goods and Services Sold Vested (shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period Total net periodic benefit cost Defined Benefit Plan, Net Periodic Benefit Cost (Credit) Current Fiscal Year End Date Current Fiscal Year End Date Corporate Corporate Segment [Member] Type of Restructuring [Domain] Type of Restructuring [Domain] Expected return on plan assets Defined Benefit Plan, Expected Return (Loss) on Plan Assets Accrued Liabilities, Current [Abstract] Accrued Liabilities, Current [Abstract] Derivative [Line Items] Derivative [Line Items] Total weighted-average shares—diluted (shares) Weighted Average Number of Shares Outstanding, Diluted Entity Address, Postal Zip Code Entity Address, Postal Zip Code Short-term Debt, Type [Domain] Short-term Debt, Type [Domain] Outstanding shares at beginning of year (shares) Outstanding as of June 28, 2020 (shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number Line of Credit Facility, Maximum Borrowing Capacity Line of Credit Facility, Maximum Borrowing Capacity Less: Imputed interest Finance Lease, Liability, Undiscounted Excess Amount 2.900% Notes (1) Notes 2.90% Due 2020 [Domain] Notes 2.90% Due 2020 Property, plant and equipment, net Property, plant and equipment, net Property, Plant and Equipment, Net Accumulated Other Comprehensive Income (Loss) AOCI Attributable to Parent [Member] Total assets Assets Foreign exchange contracts Foreign Exchange Contract [Member] Exercises (USD per share) Share-based Compensation Arrangements by Share-based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price Entity Shell Company Entity Shell Company Total operating lease liabilities Operating Lease, Liability Cover [Abstract] Cover [Abstract] Options exercisable, weighted aver remaining contractual term Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term Short-term Debt, Weighted Average Interest Rate, at Point in Time Short-term Debt, Weighted Average Interest Rate, at Point in Time Document Type Document Type Total lease liabilities Operating & Finance, Lease Liability Present value of lessee's discounted obligation for lease payments from operating and finance leases. Fair Value Measurements Fair Value Measurement and Measurement Inputs, Recurring and Nonrecurring [Text Block] Schedule of Activity Relating to Grants of PSUs and RSUs Disclosure of Share-based Compensation Arrangements by Share-based Payment Award [Table Text Block] Repayment of long-term debt and finance leases Repayments of Long-term Debt Treasury Stock, Shares, Acquired Treasury Stock, Shares, Acquired Scenario [Domain] Scenario [Domain] Share-based Payment Arrangement [Abstract] Share-based Payment Arrangement [Abstract] Derivative Instruments and Hedging Activities Disclosure [Abstract] Derivative Instruments and Hedging Activities Disclosure [Abstract] Accrued income taxes Accrued Income Taxes, Current Restructuring and Related Cost, Expected Cost, Cash Portion Restructuring and Related Cost, Cash Portion Restructuring and Related Cost, Cash Portion Accounts receivable—trade, net Increase (Decrease) in Accounts Receivable 2023 Lessee, Operating Lease, Liability, Payments, Due Year Four Current liabilities: Liabilities, Current [Abstract] Operating leases Right-of-Use Asset Obtained in Exchange for Operating Lease Liability Maximum length of time, hedged in cash flow hedge Maximum Length of Time Hedged in Cash Flow Hedge Finance lease liabilities, curent Finance Lease, Liability, Current Credit Facility [Axis] Credit Facility [Axis] Prepaid Expense and Other Assets, Current [Abstract] Prepaid Expense and Other Assets, Current [Abstract] Net losses (gains) on mark-to-market valuation of commodity derivative positions recognized in unallocated derivative losses (gains) 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 Forfeited (USD per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value Preferred Stock Preferred Stock [Member] Segment Information Segment Reporting Disclosure [Text Block] Equity [Abstract] Equity [Abstract] Segment Reporting Information [Line Items] Segment Reporting Information [Line Items] Gains (losses) on cash flow hedging derivatives, after-tax amount Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification, after Tax Document Quarterly Report Document Quarterly Report Long-term Debt, Type [Domain] Long-term Debt, Type [Domain] Short-term Debt [Line Items] Short-term Debt [Line Items] 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 2018 Share Repurchase Program [Member] 2018 Share Repurchase Program [Member] 2018 Share Repurchase Program [Member] Advertising, promotion and product allowances Accrued Marketing Costs, Current Debt Instrument [Line Items] Debt Instrument [Line Items] 3.100% Notes Notes 3.10% Due 2021 [Domain] Notes 3.10% Due 2021 Stock Repurchase Program, Remaining Authorized Repurchase Amount Stock Repurchase Program, Remaining Authorized Repurchase Amount Class of Stock [Domain] Class of Stock [Domain] Consolidation Items [Domain] Consolidation Items [Domain] Options exercisable as of June 28, 2020 (shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number Right-of-Use Asset Obtained in Exchange for Finance Lease Liability Right-of-Use Asset Obtained in Exchange for Finance Lease Liability Schedule of Unallocated Mark-to-Market (Gains) Losses on Commodity Derivatives Allocation Of Net Derivative Gains Losses From Economic Hedges To Operating Results Of Reporting Segments Table [Table Text Block] Allocation Of Net Derivative Gains Losses From Economic Hedges To Operating Results Of Reporting Segments Table [Table Text Block] Schedule of Restructuring and Related Costs [Table] Schedule of Restructuring and Related Costs [Table] Entity File Number Entity File Number Conversion of Class B common stock to Common shares outstanding Incremental Common Shares Attributable to Dilutive Effect of Conversion of Common Stock Incremental Common Shares Attributable to Dilutive Effect of Conversion of Common Stock Lease, Description [Line Items] Lessee, Lease, Description [Line Items] Employer contributions Defined Benefit Plan, Plan Assets, Contributions by Employer Net actuarial (loss) gain and prior service cost, tax (expense) benefit Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss) Arising During Period, Tax Treasury Common Stock Treasury Stock [Member] Operating lease liabilities, extensible list Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List] Forfeited (shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures in Period Segments [Axis] Segments [Axis] Cumulative effect of new accounting principle in period of adoption Cumulative Effect of New Accounting Principle in Period of Adoption Document Fiscal Period Focus Document Fiscal Period Focus Performance stock units and restricted stock units Performance Stock Units and Restricted Stock Units [Member] Performance Stock Units and Restricted Stock Units [Member] Retirement Plan Type [Axis] Retirement Plan Type [Axis] Treasury—common stock shares, at cost: 13,570,656 at June 28, 2020 and 12,723,592 at December 31, 2019 Treasury Stock, Value Defined Benefit Plan, Remeasurement, Basis Spread on Discount Rate (Basis Points) Defined Benefit Plan, Remeasurement, Basis Spread on Discount Rate Defined Benefit Plan, Remeasurement, Basis Spread on Discount Rate Goodwill [Roll Forward] Goodwill [Roll Forward] Product and Service [Domain] Product and Service [Domain] Schedule of Defined Benefit Plans Disclosures [Table] Schedule of Defined Benefit Plans Disclosures [Table] Restructuring Plan [Axis] Restructuring Plan [Axis] Short-term Debt, Type [Axis] Short-term Debt, Type [Axis] Schedule of Fair Value Estimated on the Grant Date and the Weighted Average Assumptions Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table 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 Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Commercial Paper Commercial Paper [Member] Net income per share—diluted: Earnings Per Share, Diluted [Abstract] Operating Income (Loss), Total Operating profit Operating Income (Loss) Business realignment (benefits) costs Restructuring Charges [Member] Intrinsic value of share-based liabilities paid, combined with the fair value of shares vested (in millions of dollars) Share Based Compensation Arrangement By Share Based Payment Award Intrinsic Value Of Share Based Liabilities Paid Combined With Fair Value Of Shares Vested Intrinsic value of share-based liabilities paid, combined with the fair value of shares vested (in millions of dollars). Goodwill Goodwill, beginning balance Goodwill, ending balance Goodwill Accumulated depreciation Accumulated Depreciation [Member] Accumulated Depreciation [Member] Operating cash flows from finance leases Finance Lease, Interest Payment on Liability Measurement Frequency [Domain] Measurement Frequency [Domain] Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax Segments [Domain] Segments [Domain] Adjustments for New Accounting Pronouncements [Axis] Adjustments for New Accounting Pronouncements [Axis] Statement [Line Items] Statement [Line Items] Hedging Designation [Domain] Hedging Designation [Domain] Net sales Revenue from Contract with Customer, Excluding Assessed Tax Goodwill and Intangible Assets Disclosure [Abstract] Goodwill and Intangible Assets Disclosure [Abstract] Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] Other comprehensive (loss) income, net of tax: Other Comprehensive Income (Loss), Net of Tax [Abstract] Fair Value Disclosures [Abstract] Fair Value Disclosures [Abstract] Net income per share - basic (USD per share) Earnings Per Share—basic (USD per share) Earnings Per Share, Basic Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract] Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract] Intrinsic value of options exercised (in millions of dollars) Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value Stockholders' Equity Attributable to Noncontrolling Interest [Roll Forward] Stockholders' Equity Attributable to Noncontrolling Interest [Roll Forward] Related income tax benefit Share-based Payment Arrangement, Expense, Tax Benefit Outstanding (USD per share) Outstanding (USD per share) Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price Schedule of Business Realignment Activity Restructuring and Related Costs [Table Text Block] Comprehensive income attributable to The Hershey Company Comprehensive Income (Loss), Net of Tax, Attributable to Parent Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Concentration Risk Benchmark [Domain] Concentration Risk Benchmark [Domain] Noncontrolling Interest [Line Items] Noncontrolling Interest [Line Items] Statement of Stockholders' Equity [Abstract] Statement of Stockholders' Equity [Abstract] Short-term foreign bank loans against the lines of credit Line of Credit, Current Amendment Flag Amendment Flag Schedule of Gross Carrying Amount and Accumulated Amortization for Each Major Class of Intangible Asset Schedule of Finite-Lived Intangible Assets [Table Text Block] Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract] Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract] Discontinued Operations and Disposal Groups [Abstract] Discontinued Operations and Disposal Groups [Abstract] Changes in assets and liabilities, net of business acquisitions and divestitures: Increase (Decrease) in Operating Capital [Abstract] Common stock, conversion basis (shares) Deferred Compensation Arrangement with Individual, Conversion Basis Deferred Compensation Arrangement with Individual, Conversion Basis Schedule of Additional Product Line Sales Revenue from External Customers by Products and Services [Table Text Block] Quoted prices in active markets of identical assets (Level 1) Fair Value, Inputs, Level 1 [Member] Consolidation Items [Axis] Consolidation Items [Axis] Interest expense Interest Expense Net actuarial (loss) gain and prior service cost, after tax Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss) Arising During Period, after Tax Net actuarial (loss) gain and prior service cost, pre-tax amount Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss) Arising During Period, before Tax Class of Stock [Axis] Class of Stock [Axis] Allocation of distributed earnings (cash dividends paid) Dividends Treasury Stock Activity Stockholders' Equity Note Disclosure [Text Block] Interest Expense Interest Expense [Member] Inventories at FIFO FIFO Inventory Amount Less: Increase in cash and cash equivalents classified as held for sale Cash and Cash Equivalents Classified as Held for Sale Increase (Decrease) Cash and Cash Equivalents Classified as Held for Sale Increase (Decrease) Local Phone Number Local Phone Number Schedule of Information Pertaining to Fair Value of PSUs and RSUs Granted for Potential Future Distribution Schedule of Share-based Payment Award, Equity Instruments Other than Options, Valuation Assumptions [Table Text Block] Schedule of Share-based Payment Award, Equity Instruments Other than Options, Valuation Assumptions [Table Text Block] Accumulated amortization Finance Lease, Right-Of-Use Asset, Accumulated Amortization Finance Lease, Right-Of-Use Asset, Accumulated Amortization Impairment of long-lived assets Restructuring Costs and Asset Impairment Charges Expected volatility Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate Reclassification to earnings, pre-tax amount Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), Reclassification Adjustment from AOCI, before Tax Foreign currency translation adjustments Accumulated Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Net of Tax Assets and Liabilities Held for Sale Disposal Groups, Including Discontinued Operations, Disclosure [Text Block] Total lease payments Lessee, Operating Lease, Liability, Payments, Due Net increase (decrease) in short-term debt Proceeds from (Repayments of) Short-term Debt Prepaid expenses Prepaid Expense Accounts receivable—trade, net Accounts Receivable, after Allowance for Credit Loss, Current Treasury Stock Change in Value Treasury Stock Change in Value Change in value of common shares of an entity that were issued, repurchased by the entity, and are held in its treasury during the period. 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. Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items] Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items] Derivative, Fair Value, Net Derivative, Fair Value, Net Property, Plant and Equipment [Abstract] Property, Plant and Equipment [Abstract] Finance leases Finance Lease, Liability, Payment, Due [Abstract] Unallocated corporate expense Nonoperating Income (Expense) Significant Change in Unrecognized Tax Benefits is Reasonably Possible, Amount of Unrecorded Benefit Significant Change in Unrecognized Tax Benefits is Reasonably Possible, Amount of Unrecorded Benefit Additional paid-in capital Additional Paid in Capital Finished goods Inventory, Finished Goods, Net of Reserves Noncontrolling Interest Noncontrolling Interest Disclosure [Text Block] Goods in process Inventory, Work in Process, Net of Reserves Adjustment to disposal group Impairment Charge on Reclassified Assets Forfeited (USD per share) Share-based Compensation Arrangements by Share-based Payment Award, Options, Forfeitures in Period, Weighted Average Exercise Price Prepaid expenses and other Prepaid Expense and Other Assets, Current Granted (shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross Exercised (shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period Business Realignment Activities Restructuring, Impairment, and Other Activities Disclosure [Text Block] Comprehensive (loss) income attributable to noncontrolling interest Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Total current assets Assets, Current Entity Current Reporting Status Entity Current Reporting Status Other intangible assets Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles Severance Employee Severance [Member] 2022 Lessee Operating and Financing Lease Liability Payments Due Year Three Amount of lessee's undiscounted obligation for lease payments for operating and finance leases, due in third fiscal year following latest fiscal year Net increase (decrease) in cash and cash equivalents Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect 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] Net income attributable to The Hershey Company Net income attributable to The Hershey Company Net Income (Loss) Attributable to Parent Exercise of stock options Proceeds from Stock Options Exercised Schedule of Supplemental Balance Sheet Information Schedule of Supplemental Balance Sheet Information [Table Text Block] Schedule of Supplemental Balance Sheet Information [Table Text Block] 3.200% Notes Notes 3.20% Due 2025 [Member] Notes 3.20% Due 2025 [Member] Current assets: Assets, Current [Abstract] Common stock Common Stock [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. Schedule of Short-term Debt [Table] Schedule of Short-term Debt [Table] Line Of Credit Facility, Accordion Feature Increase Limit Line Of Credit Facility, Accordion Feature Increase Limit Line Of Credit Facility, Accordion Feature Increase Limit 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. Restructuring and Related Cost, Expected Number of Positions Eliminated, Percent Restructuring and Related Cost, Expected Number of Positions Eliminated, Percent Restructuring and Related Cost, Expected Number of Positions Eliminated, Percent Thereafter Lessee Operating and Financing Lease Liability Payments Due After Year Five Amount of lessee's undiscounted obligation for lease payments for operating lease, due after fifth fiscal year following latest fiscal year. Leases [Abstract] Leases [Abstract] Debt Instrument [Axis] Debt Instrument [Axis] Interest expense, net Interest expense, net Interest Income (Expense), Nonoperating, Net Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Unallocated mark-to-market losses (gains) on commodity derivatives Derivative, Gain (Loss) on Derivative, Net Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Derivative Instruments Derivatives and Fair Value [Text Block] Net income including noncontrolling interest Net income including noncontrolling interest Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Other non-current assets Other Miscellaneous Assets, Non-Current Other Miscellaneous Assets, Non-Current Product and Service [Axis] Product and Service [Axis] Operating lease cost Operating Lease, Cost Entity Small Business Entity Small Business Commitments and Contingencies Disclosure [Abstract] Commitments and Contingencies Disclosure [Abstract] Scenario [Axis] Scenario [Axis] 2020 business realignment charges Restructuring Charges, Business Realignment Reserve Restructuring Charges, Business Realignment Reserve Entity Filer Category Entity Filer Category Other Other Accrued Liabilities, Current Pre-tax compensation expense Share-based Payment Arrangement, Expense Corporate, Non-Segment Corporate, Non-Segment [Member] 0.900% Notes (2) Notes 0.900% Notes Due 2025 [Member] Notes 0.900% Notes Due 2025 Reallocation of undistributed earnings Undistributed Earnings (Loss) Allocated to Participating Securities, Diluted 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 Thereafter Lessee, Operating Lease, Liability, Payments, Due after Year Five Interest rate swap Interest Rate Swap [Member] Total liabilities and stockholders’ equity Liabilities and Equity Entity Address, City or Town Entity Address, City or Town Basic earnings per share: Earnings Per Share, Basic, Two Class Method [Abstract] Income Tax Disclosure [Abstract] Income Tax Disclosure [Abstract] ONE Brands, LLC ONE Brands, LLC [Member] ONE Brands, LLC [Member] Supplemental Balance Sheet Information Supplemental Balance Sheet Disclosures [Text Block] Other intangible assets, adjustments Finite-Lived Intangible Assets, Purchase Accounting Adjustments Selling, marketing and administrative expense Selling, General and Administrative Expenses [Member] Schedule of the Effect of Derivative Instruments on the Consolidated Statements of Income Derivative Instruments, Gain (Loss) [Table Text Block] Concentration Risk, Percentage Concentration Risk, Percentage 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. Interest on lease liabilities, Finance lease cost Finance Lease, Interest Expense Current portion of long-term debt Less—current portion Long-term Debt, Current Maturities Operating lease liabilities Operating Lease, Liability, Noncurrent Short-term debt Short-term Debt Schedule of Long-term Debt Instruments [Table] Schedule of Long-term Debt Instruments [Table] Finite-lived noncompete agreements, gross Finite-Lived Noncompete Agreements, Gross Other comprehensive loss - foreign currency translation adjustments Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax, Portion Attributable to Noncontrolling Interest Document Fiscal Year Focus Document Fiscal Year Focus Schedule of Stock by Class [Table] Schedule of Stock by Class [Table] Schedule of Segment Reporting Information, by Segment [Table] Schedule of Segment Reporting Information, by Segment [Table] 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 Pension and Other Post-Retirement Benefit Plans Pension and Other Postretirement Benefits Disclosure [Text Block] Derivative liability Derivative Liability Other Assets, Noncurrent [Abstract] Other Assets, Noncurrent [Abstract] Finite-lived intangible asset, useful life Finite-Lived Intangible Asset, Useful Life 2023 Lessee Operating and Financing Lease Liability Payments Due Year Four Amount of lessee's undiscounted obligation for lease payments for operating and finance leases, due in fourth fiscal year following latest fiscal year. 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 Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent Other current liabilities Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Other Fair Value, Measurements, Recurring Fair Value, Recurring [Member] Award Type [Axis] Award Type [Axis] Long-term debt, fair value Long-term Debt, Excluding Current Maturities, Fair Value Long-term Debt, Excluding Current Maturities, Fair Value Common Stock Dividends, Common Stock, Cash Accrued income taxes Increase (Decrease) in Accrued Taxes Payable Other (income) expense, net Other Nonoperating Income (Expense) Other Nonoperating Income (Expense) Class of Stock [Line Items] Class of Stock [Line Items] 4.125% Notes Notes 4.125% Due 2020 [Member] Notes 4.125% Due 2020 [Member] Fair Value, by Balance Sheet Grouping [Table] Fair Value, by Balance Sheet Grouping [Table] Commodities futures and options Commodity Contract [Member] Accumulated other comprehensive loss Total accumulated other comprehensive loss Accumulated Other Comprehensive Income (Loss), Net of Tax Net (loss) income attributable to noncontrolling interests Net (loss) income attributable to noncontrolling interests Net Income (Loss) Attributable to Noncontrolling Interest Post-retirement benefits liabilities Liability, Other Postretirement Defined Benefit Plan, Noncurrent Stock Repurchased During Period, Value Stock Repurchased During Period, Value Operating cash flows from operating leases Operating Lease, Payments Line of Credit Facility [Table] Line of Credit Facility [Table] Geographical [Axis] Geographical [Axis] North America North America [Member] Retained Earnings Retained Earnings [Member] Lotte Shanghai Food Company Lotte Shanghai Food Company [Member] Lotte Shanghai Food Company [Member] Performance assumption change (USD per share) Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Performance Assumption Change Weighted Average Grant Date Fair Value The weighted average fair value as of the grant date pertaining to a share-based award plan other than a stock option plan due to a change in the performance assumptions. 3.375% Notes Notes 3.375% Due 2023 [Domain] Notes 3.375% Due 2023 Leases Lessee, Operating Leases [Text Block] Document Period End Date Document Period End Date Other current assets Other Assets, Current 2024 Finance Lease, Liability, Payments, Due Year Five Statement [Table] Statement [Table] Entity Registrant Name Entity Registrant Name Interest paid Interest Paid, Including Capitalized Interest, Operating and Investing Activities Goodwill and Intangible Assets Goodwill and Intangible Assets Disclosure [Text Block] Other (income) expense, net Other Nonoperating, Gain (Loss) Other Nonoperating, Gain (Loss) Investing Activities Net Cash Provided by (Used in) Investing Activities [Abstract] Maximum Maximum [Member] Service cost Defined Benefit Plan, Service Cost Trademarks Trademarks [Member] Designated as Hedging Instrument Designated as Hedging Instrument [Member] 2022 Lessee, Operating Lease, Liability, Payments, Due Year Three Goodwill, adjustments Measurement period adjustments Goodwill, Purchase Accounting Adjustments Class B common stock Common Class B [Member] Estimated values (USD per share) Share Price Derivative, Gain (Loss) on Derivative, Net Cumulative Amount of Mark-to-Market Gaines (Losses) on Commodity Derivatives Cumulative Amount of Mark-to-Market Gaines (Losses) on Commodity Derivatives Derivatives, Fair Value [Line Items] Derivatives, Fair Value [Line Items] Options outstanding, weighted-average remaining contractual term Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term Ownership [Axis] Ownership [Axis] All other countries Non-US [Member] 2020 Lessee Operating and Financing Lease, Liability, Payments, Within The Next Twelve Months Lessee Operating and Financing Lease, Liability, Payments, Within The Next Twelve Months Capitalized software, net Capitalized Computer Software, Net Antidilutive Securities, Name [Domain] Antidilutive Securities, Name [Domain] Finite-lived trademarks, gross Finite-Lived Trademarks, Gross Retained earnings Retained Earnings (Accumulated Deficit) Repurchase of common stock Payments for Repurchase of Common Stock Entity Tax Identification Number Entity Tax Identification Number Net income per share - diluted (USD per share) Earnings Per Share—diluted (USD per share) Earnings Per Share, Diluted Stockholders’ equity: Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest [Abstract] Schedule of Components of Net Periodic Benefit Cost Schedule of Net Benefit Costs [Table Text Block] Business realignment (benefits) costs Restructuring Charges, Business Realignment Restructuring Charges, Business Realignment Trading Symbol Trading Symbol Minimum Minimum [Member] Noncontrolling interest in subsidiary Balance, December 31, 2019 Balance, June 28, 2020 Stockholders' Equity Attributable to Noncontrolling Interest Entity Information [Line Items] Entity Information [Line Items] Settlement loss Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement Schedule of Purchase Consideration Allocation to Assets Acquired and Liabilities Assumed Schedule of Recognized Identified Assets Acquired and Liabilities Assumed [Table Text Block] Allocation of undistributed earnings Undistributed Earnings (Loss) Allocated to Participating Securities, Basic Foreign currency translation gains (losses) during period, after-tax amount Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax Raw materials Inventory, Raw Materials, Net of Reserves 3.125% Notes Notes 3.125% Due 2049 [Member] Notes 3.125% Due 2049 [Member] Restructuring Type [Axis] Restructuring Type [Axis] Operating lease liabilities, extensible list Operating Lease, Liability, Current, Statement of Financial Position [Extensible List] Legal Entity [Axis] Legal Entity [Axis] Balance Sheet Location [Domain] Balance Sheet Location [Domain] Finance lease liabilities, non-current Finance Lease, Liability, Noncurrent Statistical Measurement [Domain] Statistical Measurement [Domain] 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] Schedule of Activity Relating to the Grants of Stock Options Share-based Payment Arrangement, Option, 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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 Total long-term debt, fair value Long-term Debt, Fair Value Margin for Growth Program Margin for Growth Program [Member] Margin for Growth Program [Member] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Total liabilities Liabilities Share Repurchase Program [Axis] Share Repurchase Program [Axis] International and Other International and Other Segment [Member] International and Other Segment [Member] Common stock Common Stock, Value, Issued North America North America Segment [Member] North America Segment [Member] Deferred income taxes Deferred Income Taxes and Tax Credits Line of Credit Facility [Line Items] Line of Credit Facility [Line Items] Pension and post-retirement benefit plans: Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, after Tax [Abstract] Restructuring Reserve [Roll Forward] Restructuring Reserve [Roll Forward] Amortization of net loss (gain) Defined Benefit Plan, Amortization of Gain (Loss) Business Acquisition and Divestitures Mergers, Acquisitions and Dispositions Disclosures [Text Block] Noncompete Agreements Noncompete Agreements [Member] Statement of Comprehensive Income [Abstract] Statement of Comprehensive Income [Abstract] 7.200% Debentures Debentures 7.2% Due 2027 [Member] Debentures 7.2% Due 2027 [Member] Inventories Increase (Decrease) in Inventories Non-service cost components of net periodic benefit cost relating to pension and other post-retirement benefit plans Defined Benefit Plan, Non-Service Cost Defined Benefit Plan, Non-Service Cost Expected volatility Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Weighted Average Volatility Rate Subsegments Consolidation Items [Domain] Subsegments Consolidation Items [Domain] 2.300% Notes Notes 2.30% Due 2026 [Member] Notes 2.30% Due 2026 [Member] Incremental common shares attributable to dilutive effect of share-based payment arrangements Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements Schedule of the Changes in the Carrying Value of Goodwill by Reportable Segment Schedule of Goodwill [Table Text Block] Total weighted-average shares—basic (shares) Weighted Average Number of Shares Outstanding, Basic Retirement Plan Name [Domain] Retirement Plan Name [Domain] Equity, Class of Treasury Stock [Line Items] Equity, Class of Treasury Stock [Line Items] Operating lease ROU assets Operating Lease, Right-of-Use Asset Construction in progress Construction in Progress, Gross Schedule of Other (Income) Expense, Net Schedule of Other Nonoperating Income (Expense) [Table Text Block] Schedule of Supplemental Cash Flow Information Related To Leases Schedule of Supplemental Cash Flow Information Related To Leases [Table Text Block] Schedule of supplemental cash flow information related to leases. 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