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Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent Operating leases Lessee, Operating Lease, Liability, to be Paid, Fiscal Year Maturity [Abstract] Insider Trading Policies and Procedures [Line Items] Construction in progress Construction in Progress, Gross Options exercisable at end of period (shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Number Rule 10b5-1 Arrangement Terminated Rule 10b5-1 Arrangement Terminated [Flag] Restatement does not require Recovery Restatement Does Not Require Recovery [Text Block] Treasury Stock Activity Equity [Text Block] Accrued liabilities: Accrued Liabilities, Current [Abstract] Schedule of Goodwill [Table] Schedule of Goodwill [Table] Geographical [Axis] Geographical [Axis] Line of Credit Facility [Line Items] Line of Credit Facility [Line Items] 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] Schedule of Revenue by Major Customers, by Reporting Segments [Table] Schedule of Revenue by Major Customers, by Reporting Segments [Table] Dividend yields Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Dividend Rate North America Confectionery North America Confectionery Segment [Member] North America Confectionery Segment [Member] Shares issued for stock options and incentive compensation (shares) Shares Issued, Shares, Share-Based Payment Arrangement, before Forfeiture Property, plant and equipment, net Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment Current liabilities: Liabilities, Current [Abstract] Accounts payable: Accounts Payable, Current [Abstract] Preferred stock, shares issued: none in 2023 and 2022 Preferred Stock, Value, Issued Business Acquisition [Line Items] Business Acquisition [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] Kristin J. Riggs, Gift Shares [Member] Kristin J. Riggs, Gift Shares Inventories: Inventory, Net [Abstract] Fair Value, Recurring and Nonrecurring [Table] Fair Value, Recurring and Nonrecurring [Table] Total lease liabilities Operating & Finance, Lease Liability Present value of lessee's discounted obligation for lease payments from operating and finance leases. Cash dividends paid Payments of Ordinary Dividends, Common Stock Kristin J. Riggs, Sell Shares [Member] Kristin J. 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Pretzels, Inc. [Member] Pretzels, Inc. Executive Category: Executive Category [Axis] 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 Activity Relating to Grants of PSUs and RSUs Disclosure of Share-Based Compensation Arrangements by Share-Based Payment Award [Table Text Block] Class B common stock Common Class B [Member] Foreign exchange contracts Foreign Exchange Contract [Member] North America Salty Snacks North America Salty Snacks Segment [Member] North America Salty Snacks Segment Summary of Significant Accounting Policies Significant Accounting Policies [Text Block] Exercises (USD per share) Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price Conversion of Class B common stock to Common shares outstanding (shares) Incremental Common Shares Attributable to Dilutive Effect of Conversion of Common Stock Incremental Common Shares Attributable to Dilutive Effect of Conversion of Common Stock Quoted prices in active markets of identical assets (Level 1) Fair Value, Inputs, Level 1 [Member] Name Measure Name Patents Patents [Member] Name Forgone Recovery, Individual Name Total net share repurchases (shares) Treasury Stock, Shares, Excluding Excise Tax Treasury Stock, Shares, Excluding Excise Tax Goodwill Goodwill, beginning balance Goodwill, ending balance Goodwill Equity Components [Axis] Equity Components [Axis] Additional 402(v) Disclosure Additional 402(v) Disclosure [Text Block] Buildings Buildings and Improvements, Gross Hedging Relationship [Domain] Hedging Relationship [Domain] Adjustment to Last In First Out Inventory, LIFO Reserve Lease, Description [Table] Lessee, Lease, Description [Table] Granted (shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross Underlying Securities Award Underlying Securities Amount Performance stock units and restricted stock units Performance Stock Units and Restricted Stock Units [Member] Performance Stock Units and Restricted Stock Units [Member] Entity Small Business Entity Small Business Expected volatility Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Weighted Average Volatility Rate Maximum length of time, hedged in cash flow hedge Maximum Length of Time Hedged in Cash Flow Hedge Local Phone Number Local Phone Number Accounts receivable—trade, net Increase (Decrease) in Accounts Receivable 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 Recovery of Erroneously Awarded Compensation Disclosure [Line Items] Jason R. 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Weaver Popcorn Manufacturing, Inc. [Member] Weaver Popcorn Manufacturing, Inc. Counterparty Name [Domain] Counterparty Name [Domain] Rule 10b5-1 Arrangement Adopted Rule 10b5-1 Arrangement Adopted [Flag] Schedule of Restructuring and Related Costs [Table] Schedule of Restructuring and Related Costs [Table] 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 Finite-lived intangible assets, accumulated amortization Finite-Lived Intangible Assets, Accumulated Amortization 2025 Lessee, Operating Lease, Liability, to be Paid, Year Two Reallocation of undistributed earnings Undistributed Earnings (Loss) Allocated to Participating Securities, Diluted Net change (shares) Treasury Stock, Shares, Net Change During Period Treasury Stock, Shares, Net Change During Period Interest income Investment Income, Interest Stock Price or TSR Estimation Method Stock Price or TSR Estimation Method [Text Block] Operating lease cost Operating Lease, Cost Common stock, shares issued (shares) Common Stock, Shares, Issued Vested (shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period Consideration transferred Business Combination, Consideration Transferred Gross profit Gross Profit 2.625% Notes Notes 2.625% Due 2023 [Member] Notes 2.625% Due 2023 [Member] 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] Treasury—common stock shares, at cost: 17,103,981 at July 2, 2023 and 16,588,308 at December 31, 2022 Treasury Stock, Common, Value Security Exchange Name Security Exchange Name Schedule of Supplemental Balance Sheet Information Schedule of Supplemental Balance Sheet Information [Table Text Block] Schedule of Supplemental Balance Sheet Information [Table Text Block] Total long-term debt Total long-term debt, carrying value Long-Term Debt 3.200% Notes Notes 3.20% Due 2025 [Member] Notes 3.20% Due 2025 [Member] Diluted earnings per share: Earnings Per Share, Diluted, Two Class Method [Abstract] 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. 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Other comprehensive loss Other Comprehensive Income (Loss), before Reclassifications, Net of Tax Employee stock options Employee Stock Option [Member] 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 Settlement loss Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement Restructuring and related cost, cost incurred to date Restructuring and Related Cost, Cost Incurred to Date Maximum Maximum [Member] Comprehensive income Comprehensive Income (Loss), Net of Tax, Attributable to Parent Other non-current assets Other Miscellaneous Assets, Non-Current Other Miscellaneous Assets, Non-Current Schedule of Business Realignment Activity Restructuring and Related Costs [Table Text Block] Employee service share-based compensation, nonvested awards, compensation cost not yet recognized Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount Document Type Document Type Acquired during the period Goodwill, Acquired During Period Tabular List, Table Tabular List [Table Text Block] Entity Address, Address Line One Entity Address, Address Line One Repurchase of common stock (including excise tax) Treasury Stock, Value, Acquired, Cost Method 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 2026 Finance Lease, Liability, to be Paid, Year Three Antidilutive Securities, Name [Domain] Antidilutive Securities, Name [Domain] Stock Compensation Plans Share-Based Payment Arrangement [Text Block] Basis of Presentation Basis of Accounting, Policy [Policy Text Block] 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. 2024 Finance Lease, Liability, to be Paid, Year One 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] Business Acquisition [Axis] Business Acquisition [Axis] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Schedule of Depreciation and Amortization Expense Included within Segment Income Segment, Reconciliation of Other Items from Segments to Consolidated [Table Text Block] Derivative [Table] Derivative [Table] Business realignment (benefits) costs Restructuring Charges [Member] Schedule of Gross Carrying Amount and Accumulated Amortization for Each Major Class of Intangible Asset Schedule of Finite-Lived Intangible Assets [Table Text Block] Accounts payable and accrued liabilities Increase (Decrease) in Accounts Payable and Accrued Liabilities Income Statement [Abstract] Income Statement [Abstract] Raw materials Inventory, Raw Materials, Net of Reserves Title of 12(b) Security Title of 12(b) Security Restructuring Cost and Reserve [Line Items] Restructuring Cost and Reserve [Line Items] Other long-term liabilities, primarily operating lease liabilities Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Other Insider Trading Policies and Procedures Adopted Insider Trading Policies and Procedures Adopted [Flag] Related Party [Domain] Related Party, Type [Domain] 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 Derivative liability Derivative Liability Indefinite-lived intangible assets, excluding goodwill Indefinite-Lived Intangible Assets (Excluding Goodwill) Aggregate Erroneous Compensation Not Yet Determined Aggregate Erroneous Compensation Not Yet Determined [Text Block] 2023 (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. 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Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). 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Scalia [Member] Christopher M. Scalia Preferred stock, shares issued (shares) Preferred Stock, Shares Issued Hedging Designation [Domain] Hedging Designation [Domain] Significant other observable inputs (Level 2) Fair Value, Inputs, Level 2 [Member] Entity Emerging Growth Company Entity Emerging Growth Company Other intangibles Total other intangible assets Intangible Assets, Net (Excluding Goodwill) Other non-current assets Other Noncurrent Assets [Member] Proceeds from issuance of debt Proceeds from Issuance of Other Long-Term Debt 2.050% Notes Notes 2.050% Due 2024 [Member] Notes 2.050% Due 2024 [Member] Net assets acquired Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net Schedule of the Effect of Derivative Instruments on the Consolidated Statements of Income Derivative Instruments, Gain (Loss) [Table Text Block] Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] Named Executive Officers, Footnote Named Executive Officers, Footnote [Text Block] Other intangible assets Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles Business Realignment Activities Restructuring, Impairment, and Other Activities Disclosure [Text Block] Document Fiscal Period Focus Document Fiscal Period Focus 2024 Lessee, Operating Lease, Liability, to be Paid, Year One Useful life Finite-Lived Intangible Asset, Useful Life Pay vs Performance Disclosure, Table Pay vs Performance [Table Text Block] Antidilutive Securities [Axis] Antidilutive Securities [Axis] 2027 Lessee, Operating Lease, Liability, to be Paid, Year Four Title Trading Arrangement, Individual Title Outstanding at beginning of period (USD per share) Outstanding at end of period (USD per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted Average Exercise Price Stock-based compensation expense Share-Based Payment Arrangement, Noncash Expense 2025 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. 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Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). 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Reiman [Member] Jason R. Reiman Other Accounts Payable, Other, Current Short-term debt Short-Term Debt 3.375% Notes Notes 3.375% Due 2046 [Member] Notes 3.375% Due 2046 [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] Jason R. Reiman, Gift Shares [Member] Jason R. 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Voskuil [Member] Steven E. Voskuil Compensation Amount Outstanding Recovery Compensation Amount Additional paid-in capital Additional Paid in Capital Other long-term liabilities: Other Liabilities, Noncurrent [Abstract] Total leased liabilities Lease, Liability Lease, Liability Derivative asset Derivative Asset 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 Restructuring Plan [Axis] Restructuring Plan [Axis] Proceeds from exercised stock options Proceeds from Stock Options Exercised Statement of Comprehensive Income [Abstract] Statement of Comprehensive Income [Abstract] 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). 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Voskuil, Sell Shares [Member] Steven E. Voskuil, Sell Shares Finance lease liabilities, non-current Finance Lease, Liability, Noncurrent Finance leases, Weighted-average remaining discount rate Finance Lease, Weighted Average Discount Rate, Percent Treasury Common Stock Treasury Stock, Common [Member] Entity Central Index Key Entity Central Index Key Prepaid expenses Prepaid Expense Segment Reporting Information [Line Items] Segment Reporting Information [Line Items] Unallocated mark-to-market losses (gains) on commodity derivatives Derivative, Gain (Loss) on Derivative, Net Pre-tax compensation expense Share-Based Payment Arrangement, Expense Non-Rule 10b5-1 Arrangement Terminated Non-Rule 10b5-1 Arrangement Terminated [Flag] Finite-lived intangible assets, gross Finite-Lived Intangible Assets, Gross Provision for income taxes Income Tax Expense (Benefit) Finished goods Inventory, Finished Goods, Net of Reserves Outside of United States All other countries Non-US [Member] Designated as Hedging Instrument Designated as Hedging Instrument [Member] Write-down of equity investments Write-down of equity investments in partnerships qualifying for historic and renewable energy tax credits Equity Method Investment, Other than Temporary Impairment Finance lease ROU assets Finance Lease, Right-of-Use Asset, after Accumulated Amortization Payroll, compensation and benefits Employee-related Liabilities, Current Other program costs Other Restructuring [Member] Name Trading Arrangement, Individual Name Kristin J. Riggs [Member] Kristin J. 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Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). 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Scalia, Sell Shares [Member] Christopher M. Scalia, Sell Shares Forgone Recovery, Explanation of Impracticability Forgone Recovery, Explanation of Impracticability [Text Block] Interest rate swap agreements Interest Rate Contract [Member] 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. Right-of-Use Asset Obtained in Exchange for Finance Lease Liability Right-of-Use Asset Obtained in Exchange for Finance Lease Liability Interest expense, net Interest expense, net Interest Income (Expense), Nonoperating, Net Less: Imputed interest Finance Lease, Liability, Undiscounted Excess Amount Capital additions (including software) Payments to Acquire Property, Plant, and Equipment Company Selected Measure Amount Company Selected Measure Amount Additional Paid-in Capital Additional Paid-in Capital [Member] Gains (losses) derivatives, after-tax amount Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification, after Tax Balance Sheet Location [Axis] Balance Sheet Location [Axis] Total assets Assets Name Awards Close in Time to MNPI Disclosures, Individual Name Capitalized interest Interest Costs Capitalized Adjustment Share Repurchase Program [Axis] Share Repurchase Program [Axis] Deferred performance stock units, deferred restricted stock units, and directors' fees and accumulated dividend amounts representing deferred stock units outstanding (shares) Deferred Compensation Arrangement with Individual, Shares Issued Cover [Abstract] Cover [Abstract] Cash flow hedges, net of tax AOCI, Cash Flow Hedge, Cumulative Gain (Loss), after Tax Stock-based compensation APIC, Share-Based Payment Arrangement, Increase for Cost Recognition United States UNITED STATES Fair Value, Measurements, Recurring Fair Value, Recurring [Member] Segment Reconciling Items Segment Reconciling Items [Member] Restructuring and Related Activities [Abstract] Restructuring and Related Activities [Abstract] Fair Value Measurements Fair Value Measurement and Measurement Inputs, Recurring and Nonrecurring [Text Block] Operating cash flows from finance leases Finance Lease, Interest Payment on Liability Other long-term liabilities Total other long-term liabilities Other Liabilities, Noncurrent 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 Non-NEOs Non-NEOs [Member] Total lease payments Lessee, Operating Lease, Liability, to be Paid 1.700% Notes Notes 1.700% Due 2030 [Member] Notes 1.700% Due 2030 Pension and post-retirement benefit plans: Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, after Tax [Abstract] Current liabilities acquired Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities Pension Benefits  Pension Plan [Member] Cash Flow Hedges Cash Flow Hedging [Member] Amortization of ROU assets, Finance lease cost Finance Lease, Right-of-Use Asset, Amortization Segment Information Segment Reporting Disclosure [Text Block] Net (decrease) increase in cash and cash equivalents Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect Financing Activities Net Cash Provided by (Used in) Financing Activities [Abstract] Non-PEO NEO Non-PEO NEO [Member] Equity Component [Domain] Equity Component [Domain] Finance lease liabilities, current Finance Lease, Liability, Current Adjustment to Compensation: Adjustment to Compensation [Axis] Goods in process Inventory, Work in Process, Net of Reserves Contributions to pension and other benefit plans Payment for Pension and Other Postretirement Benefits Non-GAAP Measure Description Non-GAAP Measure Description [Text Block] Total weighted-average shares—basic (shares) Weighted Average Number of Shares Outstanding, Basic Scenario [Axis] Scenario [Axis] Debt Instrument [Line Items] Debt Instrument [Line Items] Net actuarial (loss) gain and service cost, after tax Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss) Arising During Period, after Tax Entity Current Reporting Status Entity Current Reporting Status 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] Operating profit Operating profit Operating Income (Loss) Hershey Common Stock Hershey Common Stock [Member] Hershey Common Stock [Member] International International Segment [Member] International Segment [Member] 4.250% Notes Notes 4.250% Due 2028 [Member] Notes 4.250% Due 2028 Related Party Transaction [Axis] Related Party Transaction [Axis] Pay vs Performance Disclosure Pay vs Performance Disclosure [Table] Segments [Axis] Segments [Axis] Statement [Line Items] Statement [Line Items] Conversion of Class B Common Stock into Common Stock Stock Issued During Period, Value, Conversion of Convertible Securities Other comprehensive income, net of tax: Other Comprehensive Income (Loss), Net of Tax [Abstract] Reclassification to earnings, after-tax amount Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), Reclassification Adjustment from AOCI, after Tax Scenario [Domain] Scenario [Domain] Forgone Recovery due to Disqualification of Tax Benefits, Amount Forgone Recovery due to Disqualification of Tax Benefits, Amount Awards Close in Time to MNPI Disclosures Awards Close in Time to MNPI Disclosures [Table] Customer Relationships Customer Relationships [Member] Restructuring and related cost, expected cost, cash portion Restructuring and Related Cost, Expected Cost, Cash Portion Restructuring and Related Cost, Expected Cost, Cash Portion Type of Restructuring [Domain] Type of Restructuring [Domain] Stockholders’ equity: Equity, Including Portion Attributable to Noncontrolling Interest [Abstract] Capitalized software, net Capitalized Computer Software, Net