Derivative Instruments and Hedging Activities Disclosure [Abstract] Derivative [Table] Derivative [Table] Hedging Designation [Axis] Hedging Designation [Axis] Hedging Designation [Domain] Hedging Designation [Domain] Non-designated Hedges Not Designated as Hedging Instrument [Member] Designated as Hedging Instrument Designated as Hedging Instrument [Member] Hedging Relationship [Axis] Hedging Relationship [Axis] Hedging Relationship [Domain] Hedging Relationship [Domain] Cash Flow Hedges Cash Flow Hedging [Member] Derivative Instrument [Axis] Derivative Instrument [Axis] Derivative Contract [Domain] Derivative Contract [Domain] Commodities futures and options Commodity Contract [Member] Foreign exchange contracts Foreign Exchange Contract [Member] Interest rate swap agreements Interest Rate Contract [Member] Deferred compensation derivatives Equity Swap [Member] Derivative [Line Items] Derivative [Line Items] Gains (losses) recognized in income Derivative, Gain (Loss) on Derivative, Net Gains (losses) recognized in other comprehensive income (“OCI”) (effective portion) Derivative Instruments, Gain (Loss) Recognized in Other Comprehensive Income (Loss), Effective Portion, Net Gains (losses) reclassified from accumulated OCI into income (effective portion) Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net Gains recognized in income (ineffective portion) Derivative Instruments, Gain (Loss) Recognized in Income, Ineffective Portion and Amount Excluded from Effectiveness Testing, Net Restructuring and Related Activities [Abstract] Schedule of Restructuring and Related Costs [Table] Schedule of Restructuring and Related Costs [Table] Income Statement Location [Axis] Income Statement Location [Axis] Income Statement Location [Domain] Income Statement Location [Domain] Cost of sales Cost of Sales [Member] Selling, marketing and administrative Selling, General and Administrative Expenses [Member] Business realignment charges Restructuring Charges [Member] Restructuring Plan [Axis] Restructuring Plan [Axis] Restructuring Plan [Domain] Restructuring Plan [Domain] China structure optimization China Structure Optimization [Member] China Structure Optimization [Member] Other international restructuring programs Other International Restructuring Programs [Member] Other International Restructuring Programs [Member] 2015 productivity initiative Productivity Initiative 2015 [Member] Productivity Initiative 2015 [Member] China integration initiative China Integration Initiative [Member] China Integration Initiative [Member] Disposal Group Name [Axis] Disposal Group Name [Axis] Disposal Group Name [Domain] Disposal Group Name [Domain] Mauna Loa Macadamia Nut Corporation Mauna Loa Macadamia Nut Corporation [Member] Mauna Loa Macadamia Nut Corporation [Member] Restructuring Cost and Reserve [Line Items] Restructuring Cost and Reserve [Line Items] Business realignment charges Restructuring Charges Noncontrolling Interest [Abstract] Noncontrolling Interest In Subsidiaries Noncontrolling Interest Disclosure [Text Block] Goodwill and Intangible Assets Disclosure [Abstract] Schedule of Goodwill [Table] Schedule of Goodwill [Table] Consolidation Items [Axis] Consolidation Items [Axis] Consolidation Items [Domain] Consolidation Items [Domain] Operating Segments Operating Segments [Member] Segments [Axis] Segments [Axis] Segments [Domain] Segments [Domain] North America North America Segment [Member] North America Segment [Member] International and Other International and Other Segment [Member] International and Other Segment [Member] Goodwill [Line Items] Goodwill [Line Items] Goodwill [Roll Forward] Goodwill [Roll Forward] Goodwill, beginning balance Goodwill Foreign currency translation Goodwill, Translation Adjustments Goodwill, ending balance Income Tax Disclosure [Abstract] Income Tax Contingency [Table] Income Tax Contingency [Table] Other Nonoperating Income (Expense) Other Nonoperating Income (Expense) [Member] Investment, Name [Axis] Investment, Name [Axis] Investment, Name [Domain] Investment, Name [Domain] Partnerships Qualifying For Tax Credits Partnerships Qualifying For Tax Credits [Member] Partnerships Qualifying For Tax Credits [Member] Income Tax Contingency [Line Items] Income Tax Contingency [Line Items] Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent Effective Income Tax Rate Reconciliation, Percent Effective Income Tax Rate Reconciliation, Percent Expected reduction in the liability for unrecognized tax benefits within the next 12 months Significant Change in Unrecognized Tax Benefits is Reasonably Possible, Amount of Unrecorded Benefit Investment tax credits and related tax depreciation benefits Income Tax Credits and Adjustments Write-down of equity investments in partnerships qualifying for tax credits (see Note 9) Equity Method Investment, Other than Temporary Impairment Segment Reporting [Abstract] Schedule of Segment Reporting Information, by Segment [Table] Schedule of Segment Reporting Information, by Segment [Table] Segment Reconciling Items Segment Reconciling Items [Member] Scenario [Axis] Scenario [Axis] Scenario, Unspecified [Domain] Scenario, Unspecified [Domain] Scenario, Forecast Scenario, Forecast [Member] Segment Reporting Information [Line Items] Segment Reporting Information [Line Items] Derivative gains (losses) recognized in income Disclosure of Compensation Related Costs, Share-based Payments [Abstract] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Award Type [Axis] Award Type [Axis] Equity Award [Domain] Equity Award [Domain] Performance and restricted stock options Performance Shares And Restricted Stock Units (RSU) [Member] Performance Shares And Restricted Stock Units (RSU) [Member] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] 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] Outstanding at beginning of year (shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number Granted (shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period 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. Vested (shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period Forfeited (shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period Outstanding at end of year (shares) 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] Outstanding at beginning of year (USD per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value 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 Performance assumption change 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. 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 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 Outstanding at end of year (USD per share) Compensation and Retirement Disclosure [Abstract] Schedule of Defined Benefit Plans Disclosures [Table] Schedule of Defined Benefit Plans Disclosures [Table] Defined Benefit Plans and Other Postretirement Benefit Plans [Axis] Defined Benefit Plans and Other Postretirement Benefit Plans [Axis] Defined Benefit Plan and Other Postretirement Benefit Plan [Domain] Defined Benefit Plan and Other Postretirement Benefit Plan [Domain] Pension Benefits Pension Plan [Member] Other Benefits Other Postretirement Benefit Plan [Member] Defined Benefit Plan Disclosure [Line Items] Defined Benefit Plan Disclosure [Line Items] Domestic Plans United States Pension Plan of US Entity [Member] Defined Benefit Plan, Asset Categories [Axis] Defined Benefit Plan, Asset Categories [Axis] Plan Asset Categories [Domain] Plan Asset Categories [Domain] Business Combinations [Abstract] Disposal Groups, Including Discontinued Operations [Table] Disposal Groups, Including Discontinued Operations [Table] Disposal Group Classification [Axis] Disposal Group Classification [Axis] Disposal Group Classification [Domain] Disposal Group Classification [Domain] Disposal Group, Held-for-sale or Disposed of by Sale, Not Discontinued Operations Disposal Group, Held-for-sale or Disposed of by Sale, Not Discontinued Operations [Member] Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] Proceeds from sale of business Proceeds from Divestiture of Businesses Loss on disposal of business Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal Goodwill and other intangible asset impairment charges Goodwill and Intangible Asset Impairment Statement of Stockholders' Equity [Abstract] Statement [Table] Statement [Table] Class of Stock [Axis] Class of Stock [Axis] Class of Stock [Domain] Class of Stock [Domain] Common stock Hershey Common Stock [Member] Hershey Common Stock [Member] Class B common stock Common Class B [Member] Statement [Line Items] Statement [Line Items] Dividends paid per share (USD per share) Common Stock, Dividends, Per Share, Cash Paid Equity [Abstract] Foreign currency translation adjustments Accumulated Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Net of Tax Pension and post-retirement benefit plans, net of tax Accumulated Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net of Tax Cash flow hedges, net of tax Accumulated Other Comprehensive Income (Loss), Cumulative Changes in Net Gain (Loss) from Cash Flow Hedges, Effect Net of Tax Total accumulated other comprehensive loss Accumulated Other Comprehensive Income (Loss), Net of Tax Debt Disclosure [Abstract] Schedule of Long-term Debt Instruments [Table] Schedule of Long-term Debt Instruments [Table] Long-term Debt, Type [Axis] Long-term Debt, Type [Axis] Long-term Debt, Type [Domain] Long-term Debt, Type [Domain] Corporate Debt Securities Domestic Corporate Debt Securities [Member] Debt Instrument [Axis] Debt Instrument [Axis] Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] 5.45% Notes due 2016 Notes 5.45% Due 2016 [Member] Notes 5.45% Due 2016 [Member] 1.50% Notes due 2016 Notes 1.50% Due 2016 [Member] Notes 1.50% Due 2016 [Member] 1.60% Notes due 2018 Notes 1.60% Due 2018 [Member] Notes 1.60% Due 2018 [Member] 4.125% Notes due 2020 Notes 4.125% Due 2020 [Member] Notes 4.125% Due 2020 [Member] 8.8% Debentures due 2021 Debentures 8.8% Due 2021 [Member] Debentures 8.8% Due 2021 [Member] 2.625% Notes due 2023 Notes 2.625% Due 2023 [Member] Notes 2.625% Due 2023 [Member] 3.20% Notes due 2025 Notes 3.20% Due 2025 [Member] Notes 3.20% Due 2025 [Member] 7.2% Debentures due 2027 Debentures 7.2% Due 2027 [Member] Debentures 7.2% Due 2027 [Member] Debt Instrument [Line Items] Debt Instrument [Line Items] Interest rate, stated percentage Debt Instrument, Interest Rate, Stated Percentage Earnings Per Share [Abstract] Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Antidilutive Securities [Axis] Antidilutive Securities [Axis] Antidilutive Securities, Name [Domain] Antidilutive Securities, Name [Domain] Employee stock options Employee Stock Option [Member] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Antidilutive securities excluded from computation of earnings per share (shares) Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Fair Value, Hierarchy [Axis] Fair Value, Hierarchy [Axis] Fair Value Hierarchy [Domain] Fair Value Hierarchy [Domain] Quoted prices in active markets of identical assets (Level 1) Fair Value, Inputs, Level 1 [Member] Significant other observable inputs (Level 2) Fair Value, Inputs, Level 2 [Member] Significant other unobservable inputs (Level 3) Fair Value, Inputs, Level 3 [Member] Accumulated Other Comprehensive Income (Loss) [Table] Accumulated Other Comprehensive Income (Loss) [Table] Equity Components [Axis] Equity Components [Axis] Equity Component [Domain] Equity Component [Domain] Foreign currency translation adjustments Accumulated Foreign Currency Adjustment Including Portion Attributable to Noncontrolling Interest [Member] Pension and Post-retirement benefit plans Accumulated Defined Benefit Plans Adjustment Including Portion Attributable to Noncontrolling Interest [Member] Accumulated Net Gain (Loss) from Cash Flow Hedges Including Portion Attributable to Noncontrolling Interest Accumulated Net Gain (Loss) from Cash Flow Hedges Including Portion Attributable to Noncontrolling Interest [Member] Accumulated Other Comprehensive Income (Loss) [Line Items] Accumulated Other Comprehensive Income (Loss) [Line Items] Net income Net Income (Loss) Attributable to Parent Pre-Tax Amount Other Comprehensive Income (Loss), before Tax [Abstract] Other comprehensive income (loss), before reclassifications, before tax Other Comprehensive Income (Loss), before Reclassifications, before Tax Reclassification from accumulated other comprehensive income, current period, before tax Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax Other comprehensive income (loss), before tax Other Comprehensive Income (Loss), before Tax Other Comprehensive Income (Loss), Tax [Abstract] Other Comprehensive Income (Loss), Tax [Abstract] Other comprehensive income (loss) before reclassifications, tax Other Comprehensive Income (Loss) before Reclassifications, Tax Reclassification from AOCI, current period, tax Reclassification from AOCI, Current Period, Tax Other comprehensive income (loss), tax Other Comprehensive Income (Loss), Tax Other Comprehensive Income (Loss), Net of Tax [Abstract] Other Comprehensive Income (Loss), Net of Tax [Abstract] Other comprehensive income (loss), before reclassifications, net of tax Other Comprehensive Income (Loss), before Reclassifications, Net of Tax Reclassification from accumulated other comprehensive income, current period, net of tax Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax Total other comprehensive loss, net of tax Other Comprehensive Income (Loss), Net of Tax Total comprehensive income Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest Comprehensive loss attributable to noncontrolling interests Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest Comprehensive income attributable to The Hershey Company Comprehensive Income (Loss), Net of Tax, Attributable to Parent Schedule of Share-based Compensation, Shares Authorized under Stock Option Plans, by Exercise Price Range [Table] Schedule of Share-based Compensation, Shares Authorized under Stock Option Plans, by Exercise Price Range [Table] Exercise Price Range [Axis] Exercise Price Range [Axis] Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Domain] Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Domain] Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items] Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items] Summary of the Components of Comprehensive Income Comprehensive Income (Loss) [Table Text Block] Summary of the Components of Accumulated Other Comprehensive Loss Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] Schedule of Business Acquisitions, by Acquisition [Table] Schedule of Business Acquisitions, by Acquisition [Table] Business Acquisition [Axis] Business Acquisition [Axis] Business Acquisition, Acquiree [Domain] Business Acquisition, Acquiree [Domain] KRAVE Pure Foods, Inc. KRAVE Pure Foods, Inc. [Member] KRAVE Pure Foods, Inc. [Member] Business Acquisition and Divestitures [Line Items] Business Acquisition [Line Items] Summary of Purchase Consideration Allocation to Assets Acquired and Liabilities Assumed Schedule of Recognized Identified Assets Acquired and Liabilities Assumed [Table Text Block] 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] Outstanding shares at beginning of year (shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number Granted (shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Net of Forfeitures Exercised (shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period Forfeited (shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures in Period Outstanding as of December 31, 2015 (shares) Options exercisable as of December 31, 2015 (shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number 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] Outstanding (USD per share) Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price Granted (USD per share) Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price Exercises (USD per share) Share-based Compensation Arrangements by Share-based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price Forfeited (USD per share) Share-based Compensation Arrangements by Share-based Payment Award, Options, Forfeitures in Period, Weighted Average Exercise Price Outstanding (USD per share) Options exercisable (USD per share) Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Exercise Price Options outstanding, weighted-average remaining contractual term Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term Options exercisable, weighted aver remaining contractual term Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term Aggregate intrinsic value of options outstanding Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value Aggregate intrinsic value of options exercisable Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Intrinsic Value Notes Payable to Banks Notes Payable to Banks [Member] Other obligations, net of debt issuance costs and unamortized debt discount Other Debt Obligations [Member] Total long-term debt Long-term Debt Less—current portion Long-term Debt, Current Maturities Long-term portion Long-term Debt, Excluding Current Maturities Schedule of Finite-Lived Intangible Assets [Table] Schedule of Finite-Lived Intangible Assets [Table] Finite-Lived Intangible Assets by Major Class [Axis] Finite-Lived Intangible Assets by Major Class [Axis] Finite-Lived Intangible Assets, Major Class Name [Domain] Finite-Lived Intangible Assets, Major Class Name [Domain] Trademarks Trademarks [Member] Indefinite-lived Intangible Assets [Axis] Indefinite-lived Intangible Assets [Axis] Indefinite-lived Intangible Assets, Major Class Name [Domain] Indefinite-lived Intangible Assets, Major Class Name [Domain] Finite-Lived Intangible Assets [Line Items] Finite-Lived Intangible Assets [Line Items] Finite-lived intangible assets, gross Finite-Lived Intangible Assets, Gross Finite-lived intangible assets, accumulated amortization Finite-Lived Intangible Assets, Accumulated Amortization Indefinite-lived intangible assets, excluding goodwill Indefinite-Lived Intangible Assets (Excluding Goodwill) Total other intangible assets Intangible Assets, Net (Excluding Goodwill) Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] Measurement Frequency [Axis] Measurement Frequency [Axis] Fair Value, Measurement Frequency [Domain] Fair Value, Measurement Frequency [Domain] Fair Value, Measurements, Recurring Fair Value, Measurements, Recurring [Member] Fair Value Hedging Fair Value Hedging [Member] Derivatives, Fair Value [Line Items] Derivatives, Fair Value [Line Items] Derivative asset Derivative Asset Derivative liability Derivative Liability 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 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 Accounting Policies [Abstract] Summary of Significant Accounting Policies Significant Accounting Policies [Text Block] Summary of the Changes in the Carrying Value of Goodwill by Reportable Segment Schedule of Goodwill [Table Text Block] Schedule of Gross Carrying Amount and Accumulated Amortization for Each Major Class of Intangible Asset Schedule of Finite-Lived Intangible Assets [Table Text Block] Commitments and Contingencies Disclosure [Abstract] Unrecorded Unconditional Purchase Obligation [Table] Unrecorded Unconditional Purchase Obligation [Table] Unrecorded Unconditional Purchase Obligation by Category of Item Purchased [Axis] Unrecorded Unconditional Purchase Obligation by Category of Item Purchased [Axis] Unconditional Purchase Obligation, Category of Goods or Services Acquired [Domain] Unconditional Purchase Obligation, Category of Goods or Services Acquired [Domain] Unrecorded Unconditional Purchase Obligation [Line Items] Unrecorded Unconditional Purchase Obligation [Line Items] Unrecorded Unconditional Purchase Obligation, Fiscal Year Maturity [Abstract] Unrecorded Unconditional Purchase Obligation, Fiscal Year Maturity [Abstract] SUPPLEMENTAL BALANCE SHEET INFORMATION [Abstract] SUPPLEMENTAL BALANCE SHEET INFORMATION [Abstract] Schedule of Supplemental Balance Sheet Information [Table Text Block] Schedule of Supplemental Balance Sheet Information [Table Text Block] Schedule of Supplemental Balance Sheet Information [Table Text Block] Other Income and Expenses [Abstract] Nonoperating Income (Expense) Nonoperating Income (Expense) [Member] Selling, marketing and administrative Shanghai Golden Monkey Food Joint Stock Co., Ltd. Shanghai Golden Monkey Food Joint Stock Co., Ltd. [Member] Shanghai Golden Monkey Food Joint Stock Co., Ltd. [Member] Reclassification adjustment Prior Period Reclassification Adjustment Gain on settlement of SGM liability (see Note 2) Business Combination, Bargain Purchase, Gain Recognized, Amount Gain on sale of non-core trademark Gain (Loss) on Disposition of Intangible Assets Other (income) expense, net Other Nonoperating, Gain (Loss) Other Nonoperating, Gain (Loss) Other (income) expense, net Other Nonoperating Income (Expense) Employer contributions Defined Benefit Plan, Contributions by Employer Pre-tax compensation expense Allocated Share-based Compensation Expense Related income tax benefit Employee Service Share-based Compensation, Tax Benefit from Compensation Expense Supplemental Balance Sheet Disclosures [Text Block] Supplemental Balance Sheet Disclosures [Text Block] Interest expense Interest Expense, Debt Less: Capitalized interest Interest Costs Capitalized Interest expense Interest Expense Interest income Investment Income, Interest Interest expense, net Interest Income (Expense), Nonoperating, Net Basis of Presentation Basis of Accounting, Policy [Policy Text Block] Reclassifications Reclassification, Policy [Policy Text Block] Recent Accounting Pronouncements New Accounting Pronouncements, Policy [Policy Text Block] Dividend yields Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Rate Expected volatility Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Weighted Average Volatility Rate Risk-free interest rates Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate Expected lives in years Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term Document And Entity Information [Abstract] Document Information [Table] Document Information [Table] Document Information [Line Items] Document Information [Line Items] Entity registrant name Entity Registrant Name Entity central index key Entity Central Index Key Current fiscal year end date Current Fiscal Year End Date Entity filer category Entity Filer Category Document type Document Type Document period end date Document Period End Date Document fiscal year focus Document Fiscal Year Focus Document fiscal period focus Document Fiscal Period Focus Amendment flag Amendment Flag Entity common stock, shares outstanding (shares) Entity Common Stock, Shares Outstanding Entity well-known seasoned issuer Entity Well-known Seasoned Issuer Entity voluntary filers Entity Voluntary Filers Entity current reporting status Entity Current Reporting Status Entity Public Float Entity Public Float Noncontrolling Interest [Table] Noncontrolling Interest [Table] Legal Entity [Axis] Legal Entity [Axis] Entity [Domain] Entity [Domain] Lotte Shanghai Food Company Lotte Shanghai Food Company [Member] Lotte Shanghai Food Company [Member] Noncontrolling Interest Noncontrolling Interest [Member] Noncontrolling Interest [Line Items] Noncontrolling Interest [Line Items] Noncontrolling Interest, Ownership Percentage by Parent Noncontrolling Interest, Ownership Percentage by Parent Stockholders' Equity Attributable to Noncontrolling Interest [Roll Forward] Stockholders' Equity Attributable to Noncontrolling Interest [Roll Forward] Balance, December 31, 2015 Stockholders' Equity Attributable to Noncontrolling Interest Net income (loss) attributable to noncontrolling interest Net Income (Loss) Attributable to Noncontrolling Interest Other comprehensive loss - foreign currency translation adjustments Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Tax, Portion Attributable to Noncontrolling Interest Balance, April 3, 2016 Derivative Instruments and Fair Value Measurements Derivatives and Fair Value [Text Block] Interest Rate Swap Interest Rate Swap [Member] Range [Axis] Range [Axis] Range [Domain] Range [Domain] Minimum Minimum [Member] Maximum Maximum [Member] Geographical [Axis] Geographical [Axis] Geographical [Domain] Geographical [Domain] Interest Expense Interest Expense [Member] Minimum length of time, hedged in cash flow hedge Minimum Length of Time Hedged in Cash Flow Hedge Minimum length of time over which the entity is hedging its exposure to the variability in future cash flows for forecasted transactions, excluding those forecasted transactions related to the payment of variable interest on existing financial instruments, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Maximum length of time, hedged in cash flow hedge Maximum Length of Time Hedged in Cash Flow Hedge Derivative, notional amount Derivative, Notional Amount Derivative, term of contract Derivative, Term of Contract Fair value, net asset (liability) Fair Value, Net Asset (Liability) Cash flow hedge gain (loss) to be reclassified within twelve months Cash Flow Hedge Gain (Loss) to be Reclassified within Twelve Months Fair value hedges, pre-tax benefit Increase (Decrease) in Fair Value of Hedged Item in Interest Rate Fair Value Hedge Business Acquisitions and Divestitures Mergers, Acquisitions and Dispositions Disclosures [Text Block] Comprehensive Income Comprehensive Income (Loss) Note [Text Block] Schedule of Stock by Class [Table] Schedule of Stock by Class [Table] Class of Stock [Line Items] Class of Stock [Line Items] Shares repurchased in the open market under pre-approved share repurchase programs (shares) Stock Repurchased and Retired During Period, Shares Shares issued for stock options and incentive compensation (shares) Stock Issued During Period, Shares, Share-based Compensation, Gross Net change (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. Shares repurchased in the open market under pre-approved share repurchase programs Stock Repurchased and Retired During Period, Value Shares issued for stock options and incentive compensation Stock Issued During Period, Value, Share-based Compensation, Gross Net change 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. Business Realignment Activities Restructuring, Impairment, and Other Activities Disclosure [Text Block] Summary of Net Sales and Earnings, and Depreciation and Amortization, by Segment Schedule of Segment Reporting Information, by Segment [Table Text Block] Summary of Activity Within the 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] Other intangible assets Other Intangible Assets [Member] Business Acquisition [Line Items] Goodwill Finite-lived intangible assets Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles Other current assets Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Other Current liabilities Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities Non-current deferred tax liabilities Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Liabilities Noncurrent Net assets acquired Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net Cash acquired from acquisition Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Cash and Equivalents Rollforward of Activity Relating to Noncontrolling Interest Redeemable Noncontrolling Interest [Table Text Block] Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract] Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract] Statement of Comprehensive Income [Abstract] Other comprehensive (loss) income, net of tax: Foreign currency translation adjustments Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Gain (Loss) Arising During Period, Net of Tax Pension and post-retirement benefit plans Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Adjustment, Net of Tax Cash flow hedges: Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Net of Tax [Abstract] Losses on cash flow hedging derivatives Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Net of Tax Reclassification adjustments Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, Net of Tax Income Statement [Abstract] Net sales Revenue, Net Costs and expenses: Costs and Expenses [Abstract] Cost of sales Cost of Goods Sold Selling, marketing and administrative Selling, General and Administrative Expense Business realignment charges Restructuring Charges, Business Realignment Restructuring Charges, Business Realignment Total costs and expenses Costs and Expenses Operating profit Operating Income (Loss) Interest expense, net Income before income taxes Income (Loss) from Continuing Operations before Income Taxes, Extraordinary Items, Noncontrolling Interest Provision for income taxes Income Tax Expense (Benefit) Net income Net income per share—basic: Earnings Per Share, Basic [Abstract] Net income per share - basic (USD per share) Earnings Per Share, Basic Net income per share—diluted: Earnings Per Share, Diluted [Abstract] Net income per share - diluted (USD per share) Earnings Per Share, Diluted Dividends paid per share: Dividends, Common Stock [Abstract] Other (Income) Expense, Net Other Nonoperating Income and Expense [Text Block] Statement of Financial Position [Abstract] ASSETS Assets [Abstract] Current assets: Assets, Current [Abstract] Cash and cash equivalents Cash and Cash Equivalents, at Carrying Value Accounts receivable—trade, net Accounts Receivable, Net, Current Inventories Inventory, Net Prepaid expenses and other Prepaid Expense and Other Assets, Current Total current assets Assets, Current Property, plant and equipment, net Property, Plant and Equipment, Net Other intangibles Other assets Other Assets, Noncurrent Deferred income taxes Deferred Tax Assets, Net, Noncurrent Total assets Assets LIABILITIES AND STOCKHOLDERS’ EQUITY Liabilities and Equity [Abstract] Current liabilities: Liabilities, Current [Abstract] Accounts payable Accounts Payable, Current Accrued liabilities Accrued Liabilities, Current Accrued income taxes Accrued Income Taxes, Current Short-term debt Short-term Debt Current portion of long-term debt Total current liabilities Liabilities, Current Long-term debt Long-term Debt and Capital Lease Obligations Other long-term liabilities Other Liabilities, Noncurrent Deferred income taxes Deferred Tax Liabilities, Net, Noncurrent Total liabilities Liabilities Stockholders’ equity: Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest [Abstract] Preferred stock, shares issued: none at April 3, 2016 and December 31, 2015, respectively Preferred Stock, Value, Issued Common stock Common Stock, Value, Issued Additional paid-in capital Additional Paid in Capital Retained earnings Retained Earnings (Accumulated Deficit) Treasury—common stock shares, at cost: 145,772,541 at April 3, 2016 and 143,124,384 at December 31, 2015, respectively Treasury Stock, Value Accumulated other comprehensive loss The Hershey Company stockholders’ equity Stockholders' Equity Attributable to Parent Noncontrolling interests in subsidiaries Total stockholders’ equity Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest Total liabilities and stockholders’ equity Liabilities and Equity Stock Compensation Plans Disclosure of Compensation Related Costs, Share-based Payments [Text Block] Commitments and Contingencies Commitments and Contingencies Disclosure [Text Block] Fair Value Measurements, Recurring and Nonrecurring [Table] Fair Value Measurements, Recurring and Nonrecurring [Table] 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] Current portion of long-term debt Long-term Debt, Current Maturities, Fair Value Long-term Debt, Current Maturities, Fair Value Long-term debt Long-term Debt, Excluding Current Maturities, Fair Value Long-term Debt, Excluding Current Maturities, Fair Value Total Long-term Debt, Fair Value Segment Information Segment Reporting Disclosure [Text Block] Summary of Assets and Liabilities Measured at Fair Value on a Recurring Basis Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block] Schedule of Carrying Values and Estimated Fair Values of Long-term Debt, Including Current Portion Schedule of Carrying Values and Estimated Fair Values of Debt Instruments [Table Text Block] Summary of the Effect of Derivative Instruments on the Consolidated Statements of Income Derivative Instruments, Gain (Loss) [Table Text Block] Schedule of Long-term Debt Instruments Schedule of Long-term Debt Instruments [Table Text Block] Schedule Of Net Interest Expense Interest Income and Interest Expense Disclosure [Table Text Block] Amounts recognized in net periodic benefit cost Defined Benefit Plan, Net Periodic Benefit Cost [Abstract] Service cost Defined Benefit Plan, Service Cost Interest cost Defined Benefit Plan, Interest Cost Expected return on plan assets Defined Benefit Plan, Expected Return on Plan Assets Amortization of prior service (credit) cost Defined Benefit Plan, Amortization of Prior Service Cost (Credit) Amortization of net loss Defined Benefit Plan, Amortization of Gains (Losses) Total net periodic benefit cost Defined Benefit Plan, Net Periodic Benefit Cost Preferred stock, shares issued (shares) Preferred Stock, Shares Issued Common stock, shares issued (shares) Common Stock, Shares, Issued Treasury stock, shares (shares) Treasury Stock, Shares Earnings Per Share Earnings Per Share [Text Block] Summary Other Nonoperating (Income) Expense Schedule of Other Nonoperating Income (Expense) [Table Text Block] Summary of Components of Net Periodic Benefit Cost Schedule of Net Benefit Costs [Table Text Block] Schedule of Revenue by Major Customers, by Reporting Segments [Table] Schedule of Revenue by Major Customers, by Reporting Segments [Table] Concentration Risk Type [Axis] Concentration Risk Type [Axis] Concentration Risk Type [Domain] Concentration Risk Type [Domain] Geographic Concentration Risk Geographic Concentration Risk [Member] Concentration Risk Benchmark [Axis] Concentration Risk Benchmark [Axis] Concentration Risk Benchmark [Domain] Concentration Risk Benchmark [Domain] Sales Revenue, Goods, Net Sales Revenue, Goods, Net [Member] Revenue, Major Customer [Line Items] Revenue, Major Customer [Line Items] Concentration risk, percentage Concentration Risk, Percentage Corporate, Non-Segment Corporate, Non-Segment [Member] Corporate Corporate Segment [Member] Depreciation and amortization Depreciation, Depletion and Amortization Restructuring Type [Axis] Restructuring Type [Axis] Type of Restructuring [Domain] Type of Restructuring [Domain] Pension Settlement One-time Termination Benefits [Member] Restructuring and related cost, expected number of positions eliminated (employee) Restructuring and Related Cost, Expected Number of Positions Eliminated Costs incurred to date Restructuring and Related Cost, Cost Incurred to Date Total expected cost Restructuring and Related Cost, Expected Cost Inventory, Net [Abstract] Inventory, Net [Abstract] Inventory, Raw Materials, Net of Reserves Inventory, Raw Materials, Net of Reserves Inventory, Work in Process, Net of Reserves Inventory, Work in Process, Net of Reserves Inventory, Finished Goods, Net of Reserves Inventory, Finished Goods, Net of Reserves FIFO Inventory Amount FIFO Inventory Amount Inventory, LIFO Reserve Inventory, LIFO Reserve Inventories Property, Plant and Equipment [Abstract] Property, Plant and Equipment [Abstract] Land Land Buildings and Improvements, Gross Buildings and Improvements, Gross Machinery and Equipment, Gross Machinery and Equipment, Gross Construction in Progress, Gross Construction in Progress, Gross Property, Plant and Equipment, Gross Property, Plant and Equipment, Gross Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Property, Plant and Equipment, Net Other Assets, Noncurrent [Abstract] Other Assets, Noncurrent [Abstract] Capitalized Computer Software, Net Capitalized Computer Software, Net Income Taxes Receivable, Noncurrent Income Taxes Receivable, Noncurrent Other Miscellaneous Assets, Non-Current Other Miscellaneous Assets, Non-Current Other Miscellaneous Assets, Non-Current Other Assets, Noncurrent Accrued Liabilities, Current [Abstract] Accrued Liabilities, Current [Abstract] Employee-related Liabilities, Current Employee-related Liabilities, Current Accrued Marketing Costs, Current Accrued Marketing Costs, Current Due to Related Parties, Current Due to Related Parties, Current Other Accrued Liabilities, Current Other Accrued Liabilities, Current Accrued Liabilities, Current Other Liabilities, Noncurrent [Abstract] Other Liabilities, Noncurrent [Abstract] Other Postretirement Defined Benefit Plan, Liabilities, Noncurrent Other Postretirement Defined Benefit Plan, Liabilities, Noncurrent Defined Benefit Pension Plan, Liabilities, Noncurrent Defined Benefit Pension Plan, Liabilities, Noncurrent Other Miscellaneous Liabilities, Non-Current Other Miscellaneous Liabilities, Non-Current Other Miscellaneous Liabilities, Non-Current Other Liabilities, Noncurrent Restructuring Reserve [Roll Forward] Restructuring Reserve [Roll Forward] Liability balance at December 31, 2015 Restructuring Reserve 2016 business realignment charges Restructuring Charges, Business Realignment Reserve Restructuring Charges, Business Realignment Reserve Cash payments Payments for Restructuring Other, net Restructuring Reserve, Accrual Adjustment Liability balance at April 3, 2016 Statement of Cash Flows [Abstract] Operating Activities Net Cash Provided by (Used in) Operating Activities [Abstract] 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] Stock-based compensation expense Share-based Compensation Excess tax benefits from stock-based compensation Excess Tax Benefit from Share-based Compensation, Operating Activities Deferred income taxes Deferred Income Taxes and Tax Credits Non-cash business realignment and impairment charges Restructuring Costs and Asset Impairment Charges Contributions to pension and other benefits plans Pension and Other Postretirement Benefit Contributions Write-down of equity investments Other than Temporary Impairment Losses, Investments, Portion Recognized in Earnings, Net Changes in assets and liabilities, net of effects from business acquisitions and divestitures: Increase (Decrease) in Operating Capital [Abstract] Accounts receivable—trade, net Increase (Decrease) in Accounts Receivable Inventories Increase (Decrease) in Inventories Accounts payable and accrued liabilities Increase (Decrease) in Accounts Payable and Accrued Liabilities Other assets and liabilities Increase (Decrease) in Other Operating Assets and Liabilities, Net Net cash provided by operating activities Net Cash Provided by (Used in) Operating Activities Investing Activities Net Cash Provided by (Used in) Investing Activities [Abstract] Capital additions Payments to Acquire Property, Plant, and Equipment Capitalized software additions Payments for Software Proceeds from sales of property, plant and equipment Proceeds from Sale of Property, Plant, and Equipment Equity investments in tax credit qualifying partnerships Payments to Acquire Equity Method Investments Business acquisitions, net of cash and cash equivalents acquired Payments to Acquire Businesses, Net of Cash Acquired Net cash used in investing activities Net Cash Provided by (Used in) Investing Activities Financing Activities Net Cash Provided by (Used in) Financing Activities [Abstract] Net increase in short-term debt Proceeds from (Repayments of) Short-term Debt Long-term borrowings Proceeds from Issuance of Long-term Debt Repayment of long-term debt Repayments of Long-term Debt Payment of SGM liability (see Note 2) Payments to Acquire Businesses, Gross Cash dividends paid Payments of Ordinary Dividends, Common Stock Exercise of stock options Proceeds from Stock Options Exercised Excess tax benefits from stock-based compensation Excess Tax Benefit from Share-based Compensation, Financing Activities Payment of contingent consideration Payments for Previous Acquisition Repurchase of common stock Payments for Repurchase of Common Stock Net cash used in financing activities Net Cash Provided by (Used in) Financing Activities Effect of exchange rate changes on cash and cash equivalents Effect of Exchange Rate on Cash and Cash Equivalents Decrease in cash and cash equivalents Cash and Cash Equivalents, Period Increase (Decrease) Cash and cash equivalents, beginning of period Cash and cash equivalents, end of period Supplemental Disclosure Supplemental Cash Flow Information [Abstract] Interest paid Interest Paid, Net Income taxes paid Income Taxes Paid, Net Share Repurchase Program [Axis] Share Repurchase Program [Axis] Share Repurchase Program [Domain] Share Repurchase Program [Domain] 2015 Share Repurchase Program 2015 Share Repurchase Program [Member] 2015 Share Repurchase Program [Member] 2016 Share Repurchase Program 2016 Share Repurchase Program [Member] 2016 Share Repurchase Program [Member] Stock repurchase program, authorized amount Stock Repurchase Program, Authorized Amount Stock repurchase program, remaining authorized repurchase amount Stock Repurchase Program, Remaining Authorized Repurchase Amount Summary of Stock Compensation Costs Schedule of Compensation Cost for Share-based Payment Arrangements, Allocation of Share-based Compensation Costs by Plan [Table Text Block] Summary of Activity Relating to the Grants of Stock Options Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block] Summary 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] Summary of Activity Relating to Grants of PSUs and RSUs Disclosure of Share-based Compensation Arrangements by Share-based Payment Award [Table Text Block] 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] Units granted (shares) Estimated values (USD per share) Share Price Expected volatility Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate Business acquisition, revenue reported by acquired entity for last annual period Business Acquisition, Revenue Reported by Acquired Entity for Last Annual Period Payments to acquire businesses Maximum contingent consideration amount Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High Fair value of the contingent consideration Business Combination, Contingent Consideration, Liability Payment of contingent consideration Finite-lived intangible asset, useful life Finite-Lived Intangible Asset, Useful Life Amortization expense Amortization of Intangible Assets Net Sales Operating Income (Loss) Charges associated with business realignment activities Non-service related pension expense Pension Expense, Non-Service Related Pension Expense, Non-Service Related Acquisition integration costs Business Combination, Integration Related Costs Income before income taxes Short and Long-Term Debt Debt Disclosure [Text Block] Goodwill and Intangible Assets Goodwill and Intangible Assets Disclosure [Text Block] Pension and Other Post-Retirement Benefit Plans Pension and Other Postretirement Benefits Disclosure [Text Block] Preferred Stock Preferred Stock [Member] Common Stock Common Stock [Member] Additional Paid-in Capital Additional Paid-in Capital [Member] Retained Earnings Retained Earnings [Member] Treasury Common Stock Treasury Stock [Member] Accumulated Other Comprehensive Loss AOCI Attributable to Parent [Member] Noncontrolling Interests in Subsidiaries Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] Beginning balance, stockholders' equity Other comprehensive income (loss) Dividends: Common Stock Dividends, Common Stock, Cash Stock-based compensation Adjustments to Additional Paid in Capital, Share-based Compensation, Requisite Service Period Recognition Exercise of stock options and incentive-based transactions Adjustment to Additional Paid in Capital, Income Tax Effect from Share-based Compensation, Net Repurchase of common stock Treasury Stock, Value, Acquired, Cost Method Net loss attributable to noncontrolling interests Ending balance, stockholders' equity Performance Shares [Member] Performance Shares [Member] Performance Stock Units and Restricted Stock Units [Member] Performance Stock Units and Restricted Stock Units [Member] Performance Stock Units and Restricted Stock Units [Member] Employee service share-based compensation, nonvested awards, compensation cost not yet recognized Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized Employee service share-based compensation, nonvested awards, compensation cost not yet recognized, period for recognition Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition Weighted-average fair value of options granted (per share) Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value Intrinsic value of options exercised (in millions of dollars) Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value Performance stock units for which measurement date has not yet occurred for accounting purposes (shares) Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Number Excluded The number of performance stock award units for which the measurement date has not yet occurred for accounting purposes. 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). 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 Common stock, conversion basis (shares) Deferred Compensation Arrangement with Individual, Conversion Basis Deferred Compensation Arrangement with Individual, Conversion Basis Basic and Diluted Earnings Per Share Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Percentage of voting interests acquired Business Acquisition, Percentage of Voting Interests Acquired Business combination, gain recognized Line of Credit Facility [Table] Line of Credit Facility [Table] Credit Facility [Axis] Credit Facility [Axis] Credit Facility [Domain] Credit Facility [Domain] Revolving Credit Facility Revolving Credit Facility [Member] Line of Credit Line of Credit [Member] Foreign Line of Credit Foreign Line of Credit [Member] Short-term Debt, Type [Axis] Short-term Debt, Type [Axis] Short-term Debt, Type [Domain] Short-term Debt, Type [Domain] Commercial Paper Commercial Paper [Member] Line of Credit Facility [Line Items] Line of Credit Facility [Line Items] Line of credit facility, maximum borrowing capacity Line of Credit Facility, Maximum Borrowing Capacity Line of credit facility, accordion feature increase limit Line Of Credit Facility, Accordion Feature Increase Limit Line Of Credit Facility, Accordion Feature Increase Limit Short-term foreign bank loans against the lines of credit Line of Credit, Current Short-term debt, weighted average interest rate Short-term Debt, Weighted Average Interest Rate Treasury Stock Activity Treasury Stock [Text Block] Summary of Business Realignment And Impairment Charges Restructuring and Related Costs [Table Text Block] Summary of Business Realignment Activity Schedule of Restructuring Reserve by Type of Cost [Table Text Block] Income Taxes Income Tax Disclosure [Text Block] Summary of Treasury Stock Activity Schedule of Common Stock Outstanding Roll Forward [Table Text Block] 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] 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] Dividends, Common Stock, Cash, Additional Percentage Over Class B Common Stock Dividends Dividends, Common Stock, Cash, Additional Percentage Over Class B Common Stock Dividends Dividends, Common Stock, Cash, Additional Percentage Over Class B Common Stock Dividends Basic earnings per share: Earnings Per Share, Basic, Two Class Method [Abstract] Allocation of distributed earnings (cash dividends paid) Dividends Allocation of undistributed earnings Undistributed Earnings (Loss) Allocated to Participating Securities, Basic Total earnings—basic Participating Securities, Distributed and Undistributed Earnings (Loss), Basic Total weighted-average shares—basic (shares) Weighted Average Number of Shares Outstanding, Basic Earnings Per Share—basic (USD per share) Diluted earnings per share: Earnings Per Share, Diluted, Two Class Method [Abstract] Allocation of total earnings used in basic computation Reallocation of total earnings as a result of conversion of Class B common stock to Common stock Distributed Earnings Reallocation of undistributed earnings Undistributed Earnings (Loss) Allocated to Participating Securities, Diluted Total earnings—diluted Participating Securities, Distributed and Undistributed Earnings (Loss), Diluted 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 Incremental common shares attributable to dilutive effect of share-based payment arrangements Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements Total weighted-average shares—diluted (shares) Weighted Average Number of Shares Outstanding, Diluted Earnings Per Share—diluted (USD per share)