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Operating lease ROU assets Operating Lease, Right-of-Use Asset Payroll, compensation and benefits Employee-related Liabilities, Current Interest cost Defined Benefit Plan, Interest Cost Interest rate swap agreements Interest Rate Contract [Member] Income Statement Location [Axis] Income Statement Location [Axis] Finite-lived intangible assets, accumulated amortization Finite-Lived Intangible Assets, Accumulated Amortization Statistical Measurement [Domain] Statistical Measurement [Domain] Derivative liability Derivative Liability Common Stock Dividends, Common Stock, Cash Security Exchange Name Security Exchange Name Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Foreign currency translation gains during period, tax (expense) benefit Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Tax 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 Shares Issued, Shares, Share-based Payment Arrangement, before Forfeiture Shares Issued, Shares, Share-based Payment Arrangement, before Forfeiture Other liabilities assumed, primarily current liabilities Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Other Forfeited (shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures in Period Restructuring Type [Axis] Restructuring Type [Axis] Operating leases, Weighted-average remaining lease term (years) Operating Lease, Weighted Average Remaining Lease Term Other non-current assets Total other non-current assets Other Assets, Noncurrent Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Expected return on plan assets Defined Benefit Plan, Expected Return (Loss) on Plan Assets Segments [Axis] Segments [Axis] Dividend yields Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Rate Retirement Benefits [Abstract] Retirement Benefits [Abstract] Net increase (decrease) in cash and cash equivalents Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect Entity File Number Entity File Number Schedule of Other (Income) Expense, Net Schedule of Other Nonoperating Income (Expense) [Table Text Block] Expected volatility Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate Stock-based compensation APIC, Share-based Payment Arrangement, Increase for Cost Recognition Intrinsic value of options exercised (in millions of dollars) Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value Goodwill, adjustments Measurement period adjustments Goodwill, Purchase Accounting Adjustments Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract] Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract] North America Confectionery North America Confectionery Segment [Member] North America Confectionery Segment [Member] Retirement Plan Name [Domain] Retirement Plan Name [Domain] Dividends paid per share: Dividends (including dividend equivalents): Dividends, Common Stock [Abstract] Lease, Description [Line Items] Lessee, Lease, Description [Line Items] Organization, Consolidation and Presentation of Financial Statements [Abstract] Organization, Consolidation and Presentation of Financial Statements [Abstract] Deferred income taxes Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Liabilities Amortization of Intangible Assets Amortization of Intangible Assets Schedule of Revenue by Major Customers, by Reporting Segments [Table] Schedule of Revenue by Major Customers, by Reporting Segments [Table] Stock repurchase program, remaining authorized repurchase amount Stock Repurchase Program, Remaining Authorized Repurchase Amount Long-term debt Long-term Debt and Lease Obligation Antidilutive securities excluded from computation of earnings per share (shares) Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Operating leases, Weighted-average remaining discount rate Operating Lease, Weighted Average Discount Rate, Percent Total lease liabilities Operating & Finance, Lease Liability Present value of lessee's discounted obligation for lease payments from operating and finance leases. Net actuarial (loss) gain and service cost, after tax Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss) Arising During Period, after Tax Write-down of equity investments Equity Method Investment, Other than Temporary Impairment Property, plant and equipment, net, adjustment Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Property, Plant, and Equipment Business Combination and Asset Acquisition [Abstract] Weighted-average fair value at date of grant (USD per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value Business Acquisition [Axis] Business Acquisition [Axis] Cash Flow Hedges Cash Flow Hedging [Member] Hershey Trust Company Hershey Trust Company [Member] Hershey Trust Company Reclassification to earnings due to the sale of businesses, pre-tax amount Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Reclassification Adjustment To Earnings, Realized upon Sale or Liquidation, before Tax Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Reclassification Adjustment To Earnings, Realized upon Sale or Liquidation, before Tax Gains (losses) recognized in income (a) Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net Award Type [Domain] Award Type [Domain] Share Repurchase Program [Domain] Share Repurchase Program [Domain] Local Phone Number Local Phone Number Credit Facility [Domain] Credit Facility [Domain] ASSETS Assets [Abstract] Net gains 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 Options exercisable as of April 3, 2022 (shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number Amortization of net loss Defined Benefit Plan, Amortization of Gain (Loss) Dot's Pretzels, LLC Dot's Pretzels, LLC [Member] Dot's Pretzels, LLC Right-of-Use Asset Obtained in Exchange for Finance Lease Liability Right-of-Use Asset Obtained in Exchange for Finance Lease Liability Segment Reconciling Items Segment Reconciling Items [Member] Granted (shares) Units granted (shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period Goodwill and Intangible Assets Goodwill and Intangible Assets Disclosure [Text Block] Preferred stock, shares issued: none in 2022 and 2021 Preferred Stock, Value, Issued 2018 Share Repurchase Program 2018 Share Repurchase Program [Member] 2018 Share Repurchase Program [Member] Outstanding shares at beginning of year (shares) Outstanding as of April 3, 2022 (shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number Retained Earnings Retained Earnings [Member] Debt Instrument [Axis] Debt Instrument [Axis] Prepaid expenses and other current assets Increase (Decrease) in Prepaid Expense and Other Assets Contingencies Commitments and Contingencies Disclosure [Text Block] Derivative Instruments Derivatives and Fair Value [Text Block] Pretzels, Inc. Pretzels, Inc. [Member] Pretzels, Inc. Conversion of Class B Common Stock into Common Stock Stock Issued During Period, Value, Conversion of Convertible Securities 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 Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] North America Salty Snacks North America Salty Snacks Segment [Member] North America Salty Snacks Segment 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 Amortization of prior service credit Defined Benefit Plan, Amortization of Prior Service Cost (Credit) Accounts receivable—trade, net Increase (Decrease) in Accounts Receivable Net assets acquired, adjustment Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Consideration Transferred Pension and post-retirement benefit plans: Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, after Tax [Abstract] Right-of-Use Asset Obtained in Exchange for Operating Lease Liability Right-of-Use Asset Obtained in Exchange for Operating Lease Liability Derivative Instruments and Hedging Activities Disclosure [Abstract] Derivative Instruments and Hedging Activities Disclosure [Abstract] Other long-term liabilities, primarily operating lease liabilities Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Other Commitments and Contingencies Disclosure [Abstract] Commitments and Contingencies Disclosure [Abstract] Total comprehensive income including noncontrolling interest Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest Performance stock units and restricted stock units Performance Stock Units and Restricted Stock Units [Member] Performance Stock Units and Restricted Stock Units [Member] Divestiture of noncontrolling interest Noncontrolling Interest, Decrease from Deconsolidation Net actuarial (loss) gain and service cost, pre-tax amount Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss) Arising During Period, before Tax Schedule of Segment Reporting Information, by Segment [Table] Schedule of Segment Reporting Information, by Segment [Table] Financing cash flows from finance leases Finance Lease, Principal Payments 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 Total other comprehensive income, pre-tax amount Other Comprehensive Income (Loss), before Tax Net income per share - basic (USD per share) Earnings Per Share—basic (USD per share) Earnings Per Share, Basic Indefinite-lived Intangible Assets, Major Class Name [Domain] Indefinite-lived Intangible Assets, Major Class Name [Domain] 2025 Lessee, Operating Lease, Liability, to be Paid, Year Three Outstanding at beginning of year (shares) Outstanding as of April 3, 2022 Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number Net assets acquired Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net Interest expense Interest Expense, Debt 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). 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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. Derivative [Line Items] Derivative [Line Items] Hedging Relationship [Domain] Hedging Relationship [Domain] Basis of Presentation Business Description and Basis of Presentation [Text Block] Short-term Debt, Type [Domain] Short-term Debt, Type [Domain] Earnings Per Share Earnings Per Share [Text Block] Repurchase of common stock Treasury Stock, Value, Acquired, Cost Method Inventories at First In First Out FIFO Inventory Amount Treasury stock acquired, average cost per share (USD per share) Treasury Stock Acquired, Average Cost Per Share Entity Interactive Data Current Entity Interactive Data Current Prepaid Expense and Other Assets, Current [Abstract] Prepaid Expense and Other Assets, Current [Abstract] Exercise of stock options and incentive-based transactions Stock Issued During Period, Value, Stock Options Exercised Minimum Minimum [Member] Settlement loss Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement Retirement Plan Name [Axis] Retirement Plan Name [Axis] Other assets and liabilities Increase (Decrease) in Other Operating Assets and Liabilities, Net Gross profit Gross Profit 2024 Lessee, Operating Lease, Liability, to be Paid, Year Two Effect of exchange rate changes on cash and cash equivalents Effect of Exchange Rate on Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents Balance Sheet Location [Domain] Balance Sheet Location [Domain] Comprehensive income attributable to noncontrolling interest Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest Selling, marketing and administrative expense Selling, General and Administrative Expense Indefinite-lived Intangible Assets [Axis] Indefinite-lived Intangible Assets [Axis] 2.650% Notes 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] Expected volatility Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Weighted Average Volatility Rate 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] Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding 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. Fair value, net asset (liability) Fair Value, Net Asset (Liability) Line Of Credit Facility, Accordion Feature Increase Limit Line Of Credit Facility, Accordion Feature Increase Limit Line Of Credit Facility, Accordion Feature Increase Limit Entity Address, State or Province Entity Address, State or Province 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. 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Other non-current assets, primarily operating lease ROU assets Other non-current assets Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Other Noncurrent Assets Total operating lease liabilities Operating Lease, Liability Document Transition Report Document Transition Report Schedule of Net Interest Expense Interest Income and Interest Expense Disclosure [Table Text Block] Common stock Common Stock, Value, Issued Unallocated corporate expense Nonoperating Income (Expense) Finance leases, Weighted-average remaining discount rate Finance Lease, Weighted Average Discount Rate, Percent Inventory, Net [Abstract] Inventory, Net [Abstract] 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 Outstanding at beginning of year (USD per share) Outstanding as of April 3, 2022 (USD per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value Other Benefits  Other Postretirement Benefits Plan [Member] Leases Lessee, Operating Leases [Text Block] Accumulated other comprehensive loss Total accumulated other comprehensive loss Accumulated Other Comprehensive Income (Loss), Net of Tax Diluted earnings per share: Earnings Per Share, Diluted, Two Class Method [Abstract] Entity Emerging Growth Company Entity Emerging Growth Company Amortization of ROU assets, Finance lease cost Finance Lease, Right-of-Use Asset, Amortization Class of Treasury Stock [Table] Class of Treasury Stock [Table] Deferred performance stock units, deferred restricted stock units, and directors' fees and accumulated dividend amounts representing deferred stock units outstanding Deferred Compensation Arrangement with Individual, Shares Issued 2022 (rest of year) Lessee, Operating Lease, Liability, to be Paid, Remainder of Fiscal Year 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] 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 2022 (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. Antidilutive Securities, Name [Domain] Antidilutive Securities, Name [Domain] Foreign Line of Credit Foreign Line of Credit [Member] Contributions to pension and other benefit plans Payment for Pension and Other Postretirement Benefits Cover [Abstract] Cover [Abstract] Incremental common shares attributable to dilutive effect of share-based payment arrangements Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements Goodwill [Line Items] Goodwill [Line Items] Schedule of Segment Information by Geography Revenue from External Customers by Geographic Areas [Table Text Block] Other comprehensive income Other Comprehensive Income (Loss), before Reclassifications, Net of Tax Class of Stock [Axis] Class of Stock [Axis] Treasury stock, shares (shares) Treasury Stock, Shares Long-term debt, fair value Long-term Debt, Excluding Current Maturities, Fair Value Long-term Debt, Excluding Current Maturities, Fair Value Less: Imputed interest Lessee, Operating Lease, Liability, Undiscounted Excess Amount Net actuarial (loss) gain and service cost, tax (expense) benefit Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss) Arising During Period, Tax Goods in process Inventory, Work in Process, Net of Reserves Prepaid expenses and other Prepaid Expense and Other Assets, Current Selling, marketing and administrative expense Selling, General and Administrative Expenses [Member] Accrued liabilities Total accrued liabilities Accrued Liabilities, Current Net sales Revenue from Contract with Customer, Excluding Assessed Tax 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 Less: Imputed interest Finance Lease, Liability, Undiscounted Excess Amount Finished goods Inventory, Finished Goods, Net of Reserves 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. Share-based Payment Arrangement, Option [Member] Share-based Payment Arrangement, Option [Member] Reclassification to earnings, after-tax amount Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), Reclassification Adjustment from AOCI, after Tax Equity [Abstract] Equity [Abstract] Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] Consolidation Items [Domain] Consolidation Items [Domain] Document Quarterly Report Document Quarterly Report Interest income Investment Income, Interest Common stock Common Stock [Member] Segment Information Segment Reporting Disclosure [Text Block] Finance leases, Weighted-average remaining lease term (years) Finance Lease, Weighted Average Remaining Lease Term Operating profit Operating profit Operating Income (Loss) Other (income) expense, net Other Nonoperating, Gain (Loss) Other Nonoperating, Gain (Loss) Operating lease liabilities, current Operating lease liabilities, current Operating Lease, Liability, Current Hedging Designation [Axis] Hedging Designation [Axis] Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] Document Fiscal Year Focus Document Fiscal Year Focus Foreign currency translation adjustments Accumulated Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Net of Tax Property, Plant and Equipment [Abstract] Property, Plant and Equipment [Abstract] Stock-based compensation expense Share-based Payment Arrangement, Noncash Expense Additional Paid-in Capital Additional Paid-in Capital [Member] Dividends paid per share (USD per share) Common Stock, Dividends, Per Share, Cash Paid Long-term Debt, Type [Domain] Long-term Debt, Type [Domain] Treasury Common Stock Treasury Stock [Member] 3.375% Notes Notes 3.375% Due 2023 [Member] Notes 3.375% Due 2023 Corporate Debt Securities Debt Security, Corporate, US [Member] Thereafter Financing Lease, Liability, to be Paid, after Year Four Amount of lessee's undiscounted obligation for lease payment for finance lease to be paid after forth 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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Liability Business Acquisition [Line Items] Business Acquisition [Line Items] Risk-free interest rates Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate Schedule of the Effect of Derivative Instruments on the Consolidated Statements of Income Derivative Instruments, Gain (Loss) [Table Text Block] Share Repurchase Program [Axis] Share Repurchase Program [Axis] Income Statement [Abstract] Income Statement [Abstract] Entity Registrant Name Entity Registrant Name Gross derivative assets, included within derivative liabilities Derivative Asset, Cash Transfers Receivable (Payable), Change In Quoted Market Prices On The Last Day Of Trading Derivative Asset, Cash Transfers Receivable (Payable), Change In Quoted Market Prices On The Last Day Of Trading Capitalized interest Interest Costs Capitalized Adjustment 2025 Finance Lease, Liability, to be Paid, Year Three 2026 Finance Lease, Liability, to be Paid, Year Four Other non-current assets Other Noncurrent Assets [Member] Capitalized software, net Capitalized Computer Software, Net Indefinite-lived intangible assets, excluding goodwill Indefinite-lived Intangible Assets (Excluding Goodwill) Proceeds from exercised stock options Proceeds from Stock Options Exercised 2024 Finance Lease, Liability, to be Paid, Year Two Forfeited (USD per share) Share-based Compensation Arrangements by Share-based Payment Award, Options, Forfeitures in Period, Weighted Average Exercise Price Derivative, term of contract Derivative, Term of Contract Finite-Lived Intangible Assets by Major Class [Axis] Finite-Lived Intangible Assets by Major Class [Axis] Total stockholders’ equity Beginning balance, stockholders' equity Ending balance, stockholders' equity Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest Provision for income taxes Income Tax Expense (Benefit) Accounts receivable—trade, net Accounts Receivable, after Allowance for Credit Loss, Current Amendment Flag Amendment Flag Equity Components [Axis] Equity Components [Axis] Entity Tax Identification Number Entity Tax Identification Number Fair Value Disclosures [Abstract] Fair Value Disclosures [Abstract] Antidilutive Securities [Axis] Antidilutive Securities [Axis] Document Fiscal Period Focus Document Fiscal Period Focus Total current assets Assets, Current Concentration Risk Type [Domain] Concentration Risk Type [Domain] Total lease payments Lessee, Operating Lease, Liability, to be Paid Forfeited (shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period Inventories Total inventories Inventory, Net Reclassification to earnings, after-tax amount Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, after Tax Schedule of Stock by Class [Table] Schedule of Stock by Class [Table] Schedule of Net Sales and Earnings by Segment Schedule of Segment Reporting Information, by Segment [Table Text Block] Stock Repurchased During Period, Value Stock repurchased during period, value Stock Repurchased During Period, Value 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] Statement of Financial Position [Abstract] Statement of Financial Position [Abstract] Expired (USD per share) Share-based Compensation Arrangements by Share-based Payment Award, Options, Expirations in Period, Weighted Average Exercise Price Allocation of undistributed earnings Undistributed Earnings (Loss) Allocated to Participating Securities, Basic Current portion of long-term debt Less—current portion Long-term Debt, Current Maturities Fair Value, by Balance Sheet Grouping [Table] Fair Value, by Balance Sheet Grouping [Table] Other Other Miscellaneous Liabilities, Non-Current Other Miscellaneous Liabilities, Non-Current Schedule of Depreciation and Amortization Expense Included within Segment Income Reconciliation of Other Significant Reconciling Items from Segments to Consolidated [Table Text Block] Restructuring Plan [Axis] Restructuring Plan [Axis] Other (Income) Expense, Net Other Income and Other Expense Disclosure [Text Block] Trademarks Finite-Lived Trademarks, Gross 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 Equity Component [Domain] Equity Component [Domain] Shares Issued, Value, Share-based Payment Arrangement, before Forfeiture Shares Issued, Value, Share-based Payment Arrangement, before Forfeiture 2023 Lessee, Operating Lease, Liability, to be Paid, Year One Foreign currency translation gains during period, after-tax amount Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax Share-based Compensation Arrangement by Share-based Payment Award, Performance Score, Target Amounts Share-based Compensation Arrangement by Share-based Payment Award, Performance Score, Target Amounts Share-based Compensation Arrangement by Share-based Payment Award, Performance Score, Target Amounts Accrued income taxes Increase (Decrease) in Accrued Taxes Payable Statement [Line Items] Statement [Line Items] Losses derivatives, after-tax amount Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification, after Tax Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Current assets acquired Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets 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] 2.050% Notes Notes 2.050% Due 2024 [Member] Notes 2.050% Due 2024 [Member] Retirement Plan Type [Domain] Retirement Plan Type [Domain] Short-term Debt, Type [Axis] Short-term Debt, Type [Axis] Schedule of Stock Compensation Costs Share-based Payment Arrangement, Cost by Plan [Table Text Block] Schedule of Fair Values and Carrying Values of Long-Term Debt Schedule of Carrying Values and Estimated Fair Values of Debt Instruments [Table Text Block] 2026 Lessee, Operating Lease, Liability, to be Paid, Year Four Debt Disclosure [Abstract] Debt Disclosure [Abstract] Accrued Liabilities, Current [Abstract] Accrued Liabilities, Current [Abstract] 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] Finance lease liabilities, curent Finance Lease, Liability, Current Income before income taxes Income before income taxes Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Significant other observable inputs (Level 2) Fair Value, Inputs, Level 2 [Member] Deferred income taxes, adjustment Business Combination, Provisional Information, Initial Accounting Incomplete, Deferred Income Taxes Business Combination, Provisional Information, Initial Accounting Incomplete, Deferred Income Taxes 2024 Lessee Operating and Financing Lease, Liability, To be Paid, Year Two Amount of lessee's undiscounted obligation for lease payment for operating and finance leases to be paid in second 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). Total earnings—basic Allocation of total earnings used in basic computation Participating Securities, Distributed and Undistributed Earnings (Loss), Basic Unallocated mark-to-market gains on commodity derivatives Derivative, Gain (Loss) on Derivative, Net Corporate, Non-Segment Corporate, Non-Segment [Member] Segment Reporting [Abstract] Segment Reporting [Abstract] Type of Restructuring [Domain] Type of Restructuring [Domain] 2025 Lessee Operating and Financing Lease, Liability, to be Paid, Year Three Amount of lessee's undiscounted obligation for lease payment for operating and finance leases to be paid in third 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). Useful life Finite-Lived Intangible Asset, Useful Life Commodities futures and options Commodity Contract [Member] Short-term foreign bank loans against the lines of credit Line of Credit, Current Restructuring Cost and Reserve [Line Items] Restructuring Cost and Reserve [Line Items] Interest on lease liabilities, Finance lease cost Finance Lease, Interest Expense Total prepaid expenses and other Prepaid Expenses and Other Prepaid Expenses and Other Performance and restricted stock units Performance Shares And Restricted Stock Units (RSU) [Member] Performance Shares And Restricted Stock Units (RSU) [Member] Pension and Other Post-Retirement Benefit Plans Retirement Benefits [Text Block] Schedule of Basic and Diluted Earnings Per Share Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Granted (shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross Schedule of Business Acquisitions, by Acquisition [Table] Schedule of Business Acquisitions, by Acquisition [Table] Scenario, Forecast Forecast [Member] Finance leases Finance Lease, Liability, Payment, Due [Abstract] Schedule of Assets and Liabilities Measured at Fair Value Fair Value Measurements, Nonrecurring [Table Text Block] Cash flow hedge gain (loss) to be reclassified within twelve months Cash Flow Hedge Gain (Loss) to be Reclassified within Twelve Months Title of 12(b) Security Title of 12(b) Security Basic earnings per share: Earnings Per Share, Basic, Two Class Method [Abstract] Current liabilities assumed Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities Total assets Assets Total other comprehensive income, tax (expense) benefit Other Comprehensive Income (Loss), Tax Deferred income taxes Deferred Income Taxes and Tax Credits Current portion of long-term debt, fair value Long-term Debt, Current Maturities, Fair Value Long-term Debt, Current Maturities, Fair Value Interest paid Interest Paid, Excluding Capitalized Interest, Operating Activities Geographical [Domain] Geographical [Domain] Restructuring and related cost, expected cost Restructuring and Related Cost, Expected Cost Document Type Document Type Noncontrolling Interests in Subsidiaries Noncontrolling Interest [Member] Supplemental Balance Sheet Information Supplemental Balance Sheet Disclosures [Text Block] 2023 Lessee Operating and Financing Lease, Liability, to be Paid, Year One Amount of lessee's undiscounted obligation for lease payment for operating and finance leases to be paid in next 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). Interest rate, stated percentage Debt Instrument, Interest Rate, Stated Percentage Schedule of Earnings Per Share, Basic, by Common Class, Including Two Class Method [Table] Schedule of Earnings Per Share, Basic, by Common Class, Including Two Class Method [Table] Derivative Contract [Domain] Derivative Contract [Domain] Less: Net gain attributable to noncontrolling interest Net Income (Loss) Attributable to Noncontrolling Interest Contingent consideration, liability Business Combination, Contingent Consideration, Liability Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Revolving Credit Facility Revolving Credit Facility [Member] Summary of Significant Accounting Policies Significant Accounting Policies [Text Block] Measurement Frequency [Axis] Measurement Frequency [Axis] Net cash provided by operating activities Net Cash Provided by (Used in) Operating Activities Short-term debt Short-term Debt Fair Value, Recurring and Nonrecurring [Table] Fair Value, Recurring and Nonrecurring [Table] Schedule of Components of Lease Expense Lease, Cost [Table Text Block] Schedule of Long-term Debt Instruments [Table] Schedule of Long-term Debt Instruments [Table] Net income per share—basic: Earnings Per Share, Basic [Abstract] Geographical [Axis] Geographical [Axis] Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] Total weighted-average shares—basic (shares) Weighted Average Number of Shares Outstanding, Basic Net income per share - diluted (USD per share) Earnings Per Share—diluted (USD per share) Earnings Per Share, Diluted Segments [Domain] Segments [Domain] Service cost Defined Benefit Plan, Service Cost Hedging Relationship [Axis] Hedging Relationship [Axis] Income taxes paid Income Taxes Paid, Net Business Acquisitions and Divestiture Mergers, Acquisitions and Dispositions Disclosures [Text Block] All other countries Non-US [Member] Schedule of Restructuring and Related Costs [Table] Schedule of Restructuring and Related Costs [Table] Other intangibles Total other intangible assets Intangible Assets, Net (Excluding Goodwill) Comprehensive income attributable to The Hershey Company Comprehensive Income (Loss), Net of Tax, Attributable to Parent Severance and employee benefit costs Employee Severance [Member] International Optimization Program International Optimization Program [Member] International Optimization Program Corporate Corporate Segment [Member] Total earnings—diluted Participating Securities, Distributed and Undistributed Earnings (Loss), Diluted Net cash used in financing activities Net Cash Provided by (Used in) Financing Activities Treasury—common stock shares, at cost: 15,961,542 at April 3, 2022 and 15,444,011 at December 31, 2021 Treasury Stock, Value Other comprehensive income, net of tax: Other Comprehensive Income (Loss), Net of Tax [Abstract] Deferred income taxes Deferred Income Tax Liabilities, Net Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period 2.450% Notes Notes 2.450% Due 2029 [Member] Notes 2.450% Due 2029 [Member] Business Acquisition, Acquiree [Domain] Business Acquisition, Acquiree [Domain] Property, plant and equipment, net Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment Schedule of Maturity of Finance Lease Liabilities Finance Lease, Liability, Fiscal Year Maturity [Table Text Block] Business realignment costs Cost associated with business realignment activities Restructuring Charges Accounts payable Accounts Payable, Current Concentration Risk Type [Axis] Concentration Risk Type [Axis] Depreciation and amortization Depreciation, Depletion and Amortization Other intangible assets, adjustment Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Intangibles Revenue, Major Customer [Line Items] Revenue, Major Customer [Line Items] 3.375% Notes Notes 3.375% Due 2046 [Member] Notes 3.375% Due 2046 [Member] Accumulated Other Comprehensive (Loss) Income AOCI Attributable to Parent [Member] Inventories Increase (Decrease) in Inventories Schedule of Business Realignment Activity Restructuring and Related Costs [Table Text Block] Derivative [Table] Derivative [Table] Total lease payments Lessee Operating and Financing Lease Liability Payments Due Amount of lessee's undiscounted obligation for lease payments for operating and finance leases. Cost of sales Cost of Goods and Services Sold Restructuring and Related Activities [Abstract] Restructuring and Related Activities [Abstract] Document Period End Date Document Period End Date Class B common stock Common Class B [Member] Entity Central Index Key Entity Central Index Key Concentration Risk Benchmark [Domain] Concentration Risk Benchmark [Domain] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward] Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward] Current assets acquired, adjustment Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Current Assets Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Current Assets Net lease cost (2) Lease, Cost Total leased liabilities Lease, Liability Lease, Liability Income Statement Location [Domain] Income Statement Location [Domain] Stockholders’ equity: Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest [Abstract] Customer Relationships Customer Relationships [Member] Investments in unconsolidated affiliates Investments in Affiliates, Subsidiaries, Associates, and Joint Ventures, Fair Value Disclosure Thereafter Lessee Operating Lease, Liability, to be Paid, after Year Four Amount of lessee's undiscounted obligation for lease payment for operating lease to be paid after forth 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). Reallocation of undistributed earnings Undistributed Earnings (Loss) Allocated to Participating Securities, Diluted Property, plant and equipment, net Property, plant and equipment, net Property, Plant and Equipment, Net Customer relationships Finite-Lived Customer Relationships, Gross Other long-term liabilities Total other long-term liabilities Other Liabilities, Noncurrent Lily's Sweets, LLC Lily's Sweets, LLC [Member] Lily's Sweets, LLC [Member] Treasury Stock, Shares, Acquired Shares repurchased (shares) Treasury Stock, Shares, Acquired Schedule of Long-term Debt Instruments Schedule of Long-term Debt Instruments [Table Text Block] Debt Instrument [Line Items] Debt Instrument [Line Items] Repayment of long-term debt and finance leases Repayments of Long-term Debt Trading Symbol Trading Symbol Earnings Per Share [Abstract] Earnings Per Share [Abstract] Customer-related Customer-Related Intangible Assets [Member] Other liabilities assumed, primarily current liabilities, adjustment Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Current Liabilities, Other Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Current Liabilities, Other Derivative asset Derivative Asset Property, plant and equipment, gross Property, Plant and Equipment, Gross Reclassification to earnings, tax (expense) benefit Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), Reclassification Adjustment from AOCI, Tax Cash flow hedges, net of tax AOCI, Cash Flow Hedge, Cumulative Gain (Loss), after Tax Reallocation of total earnings as a result of conversion of Class B common stock to Common stock Distributed Earnings Trademarks Trademarks [Member] Foreign exchange contracts Foreign Exchange Contract [Member] Line of Credit Facility [Table] Line of Credit Facility [Table] Reclassification to earnings, pre-tax amount Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), Reclassification Adjustment from AOCI, before Tax Outstanding (USD per share) Outstanding (USD per share) Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price Operating lease liabilities, extensible list Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration] Losses on cash flow hedging derivatives, tax (expense) benefit Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification, Tax Long-term portion Long-term Debt, Excluding Current Maturities Patents Patents [Member] Schedule of Goodwill [Table] Schedule of Goodwill [Table] Pre-tax compensation expense Share-based Payment Arrangement, Expense Options exercisable, weighted aver remaining contractual term Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term Accumulated amortization Finance Lease, Right-of-Use Asset, Accumulated Amortization Entity Current Reporting Status Entity Current Reporting Status 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] Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract] Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract] Effective Income Tax Rate Reconciliation, Percent Effective Income Tax Rate Reconciliation, Percent Entities [Table] Entities [Table] Increase (decrease) in cash and cash equivalents, including cash classified as held for sale Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect and Cash Classified as Held for Sale Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect and Cash Classified as Held for Sale Net income including noncontrolling interest Net income including noncontrolling interest Net income Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Property, plant and equipment, gross Property, Plant and Equipment, Gross [Member] Property, Plant and Equipment, Gross [Member] Treasury Stock Change in Shares Treasury Stock Change in Shares Change in the number of common shares that were previously issued and that were repurchased by the issuing entity and held in treasury during the period. This stock has no voting rights and receives no dividends. Total leased assets Lease, Right-of-Use Asset Lease, Right-of-Use Asset 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 Allocation of distributed earnings (cash dividends paid) Dividends United States UNITED STATES Defined Benefit Plan Disclosure [Line Items] Defined Benefit Plan Disclosure [Line Items] Current assets: Assets, Current [Abstract] Statement of Comprehensive Income [Abstract] Statement of Comprehensive Income [Abstract] Finite-lived intangible assets, gross Finite-Lived Intangible Assets, Gross Interest expense, net Interest expense, net Interest Income (Expense), Nonoperating, Net Leases [Abstract] Leases [Abstract] Cash flow hedges: Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax [Abstract] Schedule of Gross Carrying Amount and Accumulated Amortization for Each Major Class of Intangible Asset Schedule of Finite-Lived Intangible Assets [Table Text Block] 2026 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). Entity Address, Postal Zip Code Entity Address, Postal Zip Code Exercised (shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period 7.200% Debentures Debentures 7.2% Due 2027 [Member] Debentures 7.2% Due 2027 [Member] Total weighted-average shares—diluted (shares) Weighted Average Number of Shares Outstanding, Diluted 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 Total other comprehensive income , after-tax amount Other Comprehensive Income (Loss), Net of Tax Fair Value, Measurements, Recurring Fair Value, Recurring [Member] 2.300% Notes Notes 2.30% Due 2026 [Member] Notes 2.30% Due 2026 [Member] Share-based Compensation Arrangement by Share-based Payment Award, Award Requisite Service Period Share-based Compensation Arrangement by Share-based Payment Award, Award Requisite Service Period Income Taxes Income Tax Disclosure [Text Block] Long-term Debt, Type [Axis] Long-term Debt, Type [Axis] Schedule of Activity Relating to the Grants of Stock Options Share-based Payment Arrangement, Option, Activity [Table Text Block] Treasury Stock Activity Stockholders' Equity Note Disclosure [Text Block] Schedule of Components of Net Periodic Benefit Cost Schedule of Net Benefit Costs [Table Text Block] Other Liabilities, Noncurrent [Abstract] Other Liabilities, Noncurrent [Abstract] 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. Statement of Cash Flows [Abstract] Statement of Cash Flows [Abstract] Equity investments in tax credit qualifying partnerships Payments to Acquire Equity Method Investments Class of Stock [Line Items] Class of Stock [Line Items] Non-designated Hedges Not Designated as Hedging Instrument [Member] Credit Facility [Axis] Credit Facility [Axis] Finite-Lived Intangible Assets, Major Class Name [Domain] Finite-Lived Intangible Assets, Major Class Name [Domain] Entity Address, Address Line One Entity Address, Address Line One Net cash used in investing activities Net Cash Provided by (Used in) Investing Activities Changes in assets and liabilities, net of business acquisitions and divestitures: Increase (Decrease) in Operating Capital [Abstract] Accumulated depreciation Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Other assets acquired, primarily current assets Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Other Operating Activities Net Cash Provided by (Used in) Operating Activities [Abstract] 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 Entity Shell Company Entity Shell Company Schedule of Short-term Debt Schedule of Short-term Debt [Table Text Block] Expected term in years Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term Total current liabilities Liabilities, Current Taxes withheld and paid on employee stock awards Payment, Tax Withholding, Share-based Payment Arrangement Class of Stock [Domain] Class of Stock [Domain] Reclassification to earnings, tax (expense) benefit Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, Tax Operating cash flows from finance leases Finance Lease, Interest Payment on Liability Line of Credit Facility, Maximum Borrowing Capacity Line of Credit Facility, Maximum Borrowing Capacity Foreign currency translation Goodwill, Foreign Currency Translation Gain (Loss) Segment Reporting Information [Line Items] Segment Reporting Information [Line Items] Current Fiscal Year End Date Current Fiscal Year End Date 1.700% Notes Notes 1.700% Due 2030 [Member] Notes 1.700% Due 2030 Line of Credit Facility [Line Items] Line of Credit Facility [Line Items] Buildings Buildings and Improvements, Gross 2022 (rest of year) Finance Lease, Liability, to be Paid, Remainder of Fiscal Year Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Other current assets Other Assets, Current Statement [Table] Statement [Table] Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Outstanding [Roll Forward] Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Outstanding [Roll Forward] Recent Accounting Pronouncements New Accounting Pronouncements, Policy [Policy Text Block] Restructuring and Related Cost, Cost Incurred to Date Restructuring and Related Cost, Cost Incurred to Date Employee service share-based compensation, nonvested awards, compensation cost not yet recognized Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount Statistical Measurement [Axis] Statistical Measurement [Axis] Thereafter Lessee Operating and Financing Lease, Liability, to be Paid, after Year Four Amount of lessee's undiscounted obligation for lease payment for operating and finance leases to be paid after forth 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). FAIR VALUE MEASUREMENTS [Abstract] FAIR VALUE MEASUREMENTS [Abstract] FAIR VALUE MEASUREMENTS [Abstract] Business Realignment Activities Restructuring, Impairment, and Other Activities Disclosure [Text Block] Hershey Common Stock Hershey Common Stock [Member] Hershey Common Stock [Member] International International Segment [Member] International Segment [Member] Finance lease liabilities, non-current Finance Lease, Liability, Noncurrent Preferred Stock Preferred Stock [Member] Goodwill Goodwill, beginning balance Goodwill, ending balance Goodwill Reclassification to earnings, pre-tax amount Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, before Tax Construction in progress Construction in Progress, Gross Cost of Sales Cost of Sales [Member] Accrued income taxes Accrued Income Taxes, Current Maximum length of time, hedged in cash flow hedge Maximum Length of Time Hedged in Cash Flow Hedge Scenario [Domain] Scenario [Domain] Schedule of the Changes in the Carrying Value of Goodwill by Reportable Segment Schedule of Goodwill [Table Text Block] 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] Pension Benefits  Pension Plan [Member] Deferred compensation derivatives Equity Swap [Member] Schedule of the Classification of Derivative Assets and Liabilities within the Consolidated Balance Sheets Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block] Operating lease cost Operating Lease, Cost Concentration Risk Benchmark [Axis] Concentration Risk Benchmark [Axis] Schedule of Treasury Stock Activity Schedule of Common Stock Outstanding Roll Forward [Table Text Block] Restructuring and related cost, expected cost, cash portion Restructuring and Related Cost, Expected Cost, Cash Portion Restructuring and Related Cost, Expected Cost, Cash Portion Schedule of Finite-Lived Intangible Assets [Table] Schedule of Finite-Lived Intangible Assets [Table]