Income Tax Disclosure [Abstract] Schedule of income tax expense and related effective rate Schedule of Components of Income Tax Expense (Benefit) [Table Text Block] Restructuring and Related Activities [Abstract] Rollforward of liability incurred on restructuring plan Schedule of Restructuring Reserve by Type of Cost [Table Text Block] Schedule of restructuring charges by operating segment Restructuring and Related Costs [Table Text Block] Product Warranties Disclosures [Abstract] Schedule of warranty liability activity Schedule of Product Warranty Liability [Table Text Block] Revenue from Contract with Customer [Abstract] Revenue, Initial Application Period Cumulative Effect Transition [Table] Revenue, Initial Application Period Cumulative Effect Transition [Table] Product and Service [Axis] Product and Service [Axis] Product and Service [Domain] Product and Service [Domain] Online Dashboard, Mobile Applications, And Upgrade Rights Online Dashboard, Mobile Applications, And Upgrade Rights [Member] Online Dashboard, Mobile Applications, And Upgrade Rights [Member] Gift Cards Gift Cards [Member] Gift Cards [Member] Revenue, Initial Application Period Cumulative Effect Transition [Line Items] Revenue, Initial Application Period Cumulative Effect Transition [Line Items] Estimated usage period Contract With Customer, Liability, Amortization Period Contract With Customer, Liability, Amortization Period Contract assets Contract with Customer, Asset, Net Deferred contract costs Capitalized Contract Cost, Net Contract liabilities Contract with Customer, Liability Derivative Instruments and Hedging Activities Disclosure [Abstract] DERIVATIVES AND RISK MANAGEMENT Derivative Instruments and Hedging Activities Disclosure [Text Block] Debt Disclosure [Abstract] DEBT ACTIVITY Debt Disclosure [Text Block] Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract] Schedule of changes in the balances of each component of accumulated other comprehensive income (loss), net of taxes Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] Organization, Consolidation and Presentation of Financial Statements [Abstract] Basis of Presentation Basis of Accounting, Policy [Policy Text Block] Business Business Policy [Policy Text Block] Disclosure of accounting policy for business. Hedging Instruments Derivatives, Policy [Policy Text Block] Operating Expenses Selling, General and Administrative Expenses, Policy [Policy Text Block] Earnings (Loss) Per Share (EPS) Earnings Per Share, Policy [Policy Text Block] Recently Issued and Adopted Accounting Standards New Accounting Pronouncements, Policy [Policy Text Block] Revenue Revenue from Contract with Customer [Policy Text Block] Fair Value Measurements Fair Value Measurement, Policy [Policy Text Block] Schedule of Long-term Debt Instruments [Table] Schedule of Long-term Debt Instruments [Table] Credit Facility [Axis] Credit Facility [Axis] Credit Facility [Domain] Credit Facility [Domain] Revolving Credit Facility Revolving Credit Facility [Member] Letter of Credit Letter of Credit [Member] Term Loan Facility Term Loan Facility [Member] Term Loan Facility [Member] U.S. term loan Secured Debt [Member] Debt Instrument [Axis] Debt Instrument [Axis] Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Second A&R Credit Agreement Second A&R Credit Agreement [Member] Second A&R Credit Agreement [Member] Prior Credit Agreement Credit Agreement [Member] Represents the overall credit facility which provides for revolving credit loans, a swingline loan and letters of credit. Valuation Approach and Technique [Axis] Valuation Approach and Technique [Axis] Valuation Approach and Technique [Domain] Valuation Approach and Technique [Domain] Lower Of Cost Or Market Value Lower Of Cost Or Market Value [Member] Lower Of Cost Or Market Value [Member] Net Liquidation Value Net Liquidation Value [Member] Net Liquidation Value [Member] Asset Class [Axis] Asset Class [Axis] Asset Class [Domain] Asset Class [Domain] United States Finished Goods Inventory United States Finished Goods Inventory [Member] United States Finished Goods Inventory [Member] Finished Goods Held By Foreign Subsidiaries Finished Goods Held By Foreign Subsidiaries [Member] Foreign Goods Held By Foreign Subsidiaries [Member] Foreign Finished Goods Inventory Foreign Finished Goods Inventory [Member] Foreign Finished Goods Inventory [Member] Debt Instrument, Period [Axis] Debt Instrument, Period [Axis] Debt Instrument, Period [Axis] Debt Instrument, Period [Domain] Debt Instrument, Period [Domain] [Domain] for Debt Instrument, Period [Axis] Post Closing, First Anniversary Post Closing, First Anniversary [Member] Post Closing, First Anniversary [Member] Post Closing, Second Anniversary Post Closing, Second Anniversary [Member] Post Closing, Second Anniversary [Member] Range [Axis] Range [Axis] Range [Domain] Range [Domain] Minimum Minimum [Member] Maximum Maximum [Member] Variable Rate [Axis] Variable Rate [Axis] Variable Rate [Domain] Variable Rate [Domain] London Interbank Offered Rate (LIBOR) London Interbank Offered Rate (LIBOR) [Member] Base Rate Base Rate [Member] Debt Covenant Period [Axis] Debt Covenant Period [Axis] Debt Covenant Period [Axis] Debt Covenant Period [Domain] Debt Covenant Period [Domain] [Domain] for Debt Covenant Period [Axis] Debt Covenant Period One Debt Covenant Period One [Member] Debt Covenant Period One [Member] Debt Covenant Period Two Debt Covenant Period Two [Member] Debt Covenant Period Two [Member] Debt Covenant Period Three Debt Covenant Period Three [Member] Debt Covenant Period Three [Member] Debt Covenant Period Four Debt Covenant Period Four [Member] Debt Covenant Period Four [Member] Debt Covenant Period Five Debt Covenant Period Five [Member] Debt Covenant Period Five [Member] Debt Covenant Period Six And Thereafter Debt Covenant Period Six And Thereafter [Member] Debt Covenant Period Six And Thereafter [Member] Debt Instrument [Line Items] Debt Instrument [Line Items] Line of credit facility, maximum borrowing capacity Line of Credit Facility, Maximum Borrowing Capacity Line of credit facility, components of borrowing base, percentage of assets, united states receivables Line Of Credit Facility, Components Of Borrowing Base, Percentage Of Assets, United States Receivables Line Of Credit Facility, Components Of Borrowing Base, Percentage Of Assets, United States Receivables Line of credit facility, components of borrowing base, percentage of assets, credit card receivables Line Of Credit Facility, Components Of Borrowing Base, Percentage Of Assets, Credit Card Receivables Line Of Credit Facility, Components Of Borrowing Base, Percentage Of Assets, Credit Card Receivables Line of credit facility, components of borrowing base, percentage of assets Line Of Credit Facility, Components Of Borrowing Base, Percentage Of Assets Line Of Credit Facility, Components Of Borrowing Base, Percentage Of Assets Line of credit facility, components of borrowing base, percentage of assets, foreign accounts receivable Line Of Credit Facility, Components Of Borrowing Base, Percentage Of Assets, Foreign Accounts Receivable Line Of Credit Facility, Components Of Borrowing Base, Percentage Of Assets, Foreign Accounts Receivable Line of credit facility, borrowing base, excluding indebtedness to foreign subsidiaries, amount Line Of Credit Facility, Borrowing Base, Excluding Indebtedness To Foreign Subsidiaries, Amount Line Of Credit Facility, Borrowing Base, Excluding Indebtedness To Foreign Subsidiaries, Amount Line of credit facility, components of borrowing base, percentage of assets, foreign borrowers Line Of Credit Facility, Components Of Borrowing Base, Percentage Of Assets, Foreign Borrowers Line Of Credit Facility, Components Of Borrowing Base, Percentage Of Assets, Foreign Borrowers Line of credit facility, borrowing base, excluding aggregate reserves, amount Line Of Credit Facility, Borrowing Base, Excluding Aggregate Reserves, Amount Line Of Credit Facility, Borrowing Base, Excluding Aggregate Reserves, Amount Long-term debt Long-term Debt Debt instrument, penalties and early termination fees Debt Instrument, Penalties and Early Termination Fees Debt Instrument, Penalties and Early Termination Fees Loss on extinguishment of debt Gain (Loss) on Extinguishment of Debt Debt instrument, basis spread on variable rate Debt Instrument, Basis Spread on Variable Rate Debt instrument, basis spread on variable rate, increase Debt Instrument, Basis Spread on Variable Rate, Increase Debt Instrument, Basis Spread on Variable Rate, Increase Long-term debt, maturities, repayments of principal in year two Long-term Debt, Maturities, Repayments of Principal in Year Two Long-term debt, maturities, repayments of principal in year three Long-term Debt, Maturities, Repayments of Principal in Year Three Line of credit facility, annual authorized prepayment amount Line Of Credit Facility, Annual Authorized Prepayment Amount Line Of Credit Facility, Annual Authorized Prepayment Amount Debt instrument increments in excess of minimum principal amount Debt Instrument Increments in Excess of Minimum Principal Amount Represents the incremental principal payments in excess of the minimum principal amount. Line of credit, voluntary permanent reduction in revolving credit capacity Line Of Credit, Voluntary Permanent Reduction In Revolving Credit Capacity Line Of Credit, Voluntary Permanent Reduction In Revolving Credit Capacity Line of credit, incremental amount in excess of voluntary permanent reduction in revolving credit capacity Line Of Credit, Incremental Amount In Excess Of Voluntary Permanent Reduction In Revolving Credit Capacity Line Of Credit, Incremental Amount In Excess Of Voluntary Permanent Reduction In Revolving Credit Capacity Line of credit facility, commitment fee percentage Line of Credit Facility, Commitment Fee Percentage Debt instrument covenant, fixed charge coverage ratio Debt Instrument Covenant, Fixed Charge Coverage Ratio Debt Instrument Covenant, Fixed Charge Coverage Ratio Debt instrument covenant, cash and cash equivalents including amount available for borrowing Debt Instrument Covenant, Cash And Cash Equivalents Including Amount Available For Borrowing Debt Instrument Covenant, Cash And Cash Equivalents Including Amount Available For Borrowing Debt instrument covenant consolidated leverage ratio Debt Instrument Covenant Consolidated Leverage Ratio Represents the consolidated leverage ratio required per the debt agreement. Debt instrument covenant, minimum trailing twelve month EBITDA Debt Instrument Covenant, Minimum Trailing Twelve Month EBITDA Debt Instrument Covenant, Minimum Trailing Twelve Month EBITDA Debt instrument covenant, minimum liquidity requirement, cash and cash equivalents including amount available for borrowing Debt Instrument Covenant, Minimum Liquidity Requirement, Cash And Cash Equivalents Including Amount Available For Borrowing Debt Instrument Covenant, Minimum Liquidity Requirement, Cash And Cash Equivalents Including Amount Available For Borrowing Debt instrument covenant, maximum capital expenditures per year Debt Instrument Covenant, Maximum Capital Expenditures Per Year Debt Instrument Covenant, Maximum Capital Expenditures Per Year Net borrowings (repayments) of debt Proceeds from (Repayments of) Debt Line of credit facility, remaining borrowing capacity Line of Credit Facility, Remaining Borrowing Capacity Interest expense Interest Expense Interest expense, long-term debt Interest Expense, Long-term Debt Amortization of debt issuance costs Amortization of Debt Issuance Costs FINANCIAL STATEMENT POLICIES Organization, Consolidation and Presentation of Financial Statements Disclosure and Significant Accounting Policies [Text Block] Schedule of Restructuring and Related Costs [Table] Schedule of Restructuring and Related Costs [Table] Restructuring Plan [Axis] Restructuring Plan [Axis] Restructuring Plan [Domain] Restructuring Plan [Domain] New World Fossil New World Fossil [Member] New World Fossil [Member] Consolidation Items [Axis] Consolidation Items [Axis] Consolidation Items [Domain] Consolidation Items [Domain] Operating segments Operating Segments [Member] Corporate Corporate, Non-Segment [Member] Segments [Axis] Segments [Axis] Segments [Domain] Segments [Domain] Americas Americas Segment [Member] Segment on the continents of North and South America. Europe Europe Segment [Member] Segment in the region of Europe. Asia Asia Segment [Member] Segment in the region of Asia. Restructuring Cost and Reserve [Line Items] Restructuring Cost and Reserve [Line Items] Restructuring charges Restructuring Charges Warranty liability activity [Roll Forward] Movement in Standard Product Warranty Accrual [Roll Forward] Beginning balance Standard Product Warranty Accrual Settlements in cash or kind Standard Product Warranty Accrual, Decrease for Payments Warranties issued and adjustments to preexisting warranties Warranties Issued and Adjustments to Preexisting Warranties Warranties Issued And Adjustments To Preexisting Warranties. Ending balance Disaggregation of Revenue [Table] Disaggregation of Revenue [Table] Timing of Transfer of Good or Service [Axis] Timing of Transfer of Good or Service [Axis] Timing of Transfer of Good or Service [Domain] Timing of Transfer of Good or Service [Domain] Revenue recognized at a point in time Transferred at Point in Time [Member] Revenue recognized over time Transferred over Time [Member] Watches Watches [Member] Information related to the watches product line. Leathers Leathers [Member] Information related to the leathers product line. Jewelry Jewelry [Member] Information related to the jewelry product line. Other Products Other [Member] Information related to other product lines. Geographical [Axis] Geographical [Axis] Geographical [Domain] Geographical [Domain] Americas Americas [Member] Europe Europe [Member] Asia Asia [Member] Disaggregation of Revenue [Line Items] Disaggregation of Revenue [Line Items] Net sales Revenue from Contract with Customer, Excluding Assessed Tax Segment Reporting [Abstract] Schedule of Segment Reporting Information, by Segment [Table] Schedule of Segment Reporting Information, by Segment [Table] Net sales for each class of similar products Segment Reporting Information [Line Items] Percentage of Total Percentage of Product Revenue to Total Sales Revenue Percentage Of Product Revenue To Total Sales Revenue. WARRANTY LIABILITIES Product Warranty Disclosure [Text Block] Fair Value Disclosures [Abstract] Fair Value Measurements, Recurring and Nonrecurring [Table] Fair Value Measurements, Recurring and Nonrecurring [Table] 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] SKAGEN Trade Names SKAGEN [Member] Trade Names SKAGEN [Member] Measurement Input Type [Axis] Measurement Input Type [Axis] Measurement Input Type [Domain] Measurement Input Type [Domain] Discount rate Measurement Input, Discount Rate [Member] Measurement Basis [Axis] Measurement Basis [Axis] Fair Value Measurement [Domain] Fair Value Measurement [Domain] Portion at Fair Value Measurement Portion at Fair Value Measurement [Member] Carrying Value Reported Value Measurement [Member] Estimate of Fair Value Measurement Estimate of Fair Value Measurement [Member] Income Statement Location [Axis] Income Statement Location [Axis] Income Statement Location [Domain] Income Statement Location [Domain] Selling, General and Administrative Selling, General and Administrative Expenses [Member] Restructuring Charges Restructuring Charges [Member] Specific Company Owned Stores Specific Company Owned Stores Net [Member] The specific company-owned stores-net class of assets measured and disclosed at fair value. Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV [Domain] Level 3 Fair Value, Inputs, Level 3 [Member] Liability Class [Axis] Liability Class [Axis] Fair Value by Liability Class [Domain] Fair Value by Liability Class [Domain] Contingent Consideration Contingent Consideration [Member] Contingent Consideration [Member] Fair value hierarchy for assets and liabilities measured at fair value on a recurring basis Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Debt, fair value Long-term Debt, Fair Value Carrying amount of trade name Indefinite-lived Intangible Assets (Excluding Goodwill) Implied fair value Indefinite-lived Intangible Assets (Excluding Goodwill), Fair Value Disclosure Impairment charge Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill) Property, plant and equipment - net Property, Plant and Equipment, Net Fair value write-down Property, Plant, and Equipment, Fair Value Disclosure Key amount not recoverable Impairment of Leasehold Impairment of property, plant, and equipment Impairment of Long-Lived Assets Held-for-use Discount rate Debt Instrument Measurement Input Percent Debt Instrument Measurement Input Percent Contingent consideration Business Combination, Contingent Consideration, Liability Derivative [Table] Derivative [Table] 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] Forward Contracts Foreign Exchange Forward [Member] Interest Rate Swaps Interest Rate Swap [Member] Derivative [Line Items] Derivative [Line Items] Total gain (loss) recognized in other comprehensive income (loss), net of taxes Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, before Tax Unrecognized tax benefits Unrecognized Tax Benefits Unrecognized tax benefits, excluding interest and penalties, that are expected to be settled within the next 12 months Significant Change in Unrecognized Tax Benefits is Reasonably Possible, Amount of Unrecorded Benefit Accrued income-tax related interest and penalties Unrecognized Tax Benefits, Interest on Income Taxes Accrued Accrued income tax penalties Unrecognized Tax Benefits, Income Tax Penalties Accrued Income-tax related interest expense Unrecognized Tax Benefits, Interest on Income Taxes Expense Disclosure of Compensation Related Costs, Share-based Payments [Abstract] EMPLOYEE BENEFIT PLANS Disclosure of Compensation Related Costs, Share-based Payments [Text Block] Numerator: Net Income (Loss) Attributable to Parent [Abstract] Net income (loss) attributable to Fossil Group, Inc. Net Income (Loss) Available to Common Stockholders, Basic Denominator: Weighted Average Number of Shares Outstanding, Basic [Abstract] Basic weighted average common shares outstanding (in shares) Weighted Average Number of Shares Outstanding, Basic Basic EPS (in dollars per share) Earnings Per Share, Basic Diluted EPS computation: Weighted Average Number of Shares Outstanding, Diluted [Abstract] Diluted weighted average common shares outstanding (in shares) Weighted Average Number of Shares Outstanding, Diluted Diluted EPS (in dollars per share) Earnings Per Share, Diluted 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] Stock Compensation Plan Stock Compensation Plan [Member] Performance Shares Performance Shares [Member] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Other EPS Disclosures Earnings Per Share, Diluted, Other Disclosures [Abstract] Weighted shares issuable under stock-based awards not included in the diluted EPS calculation (in shares) Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Inventory Disclosure [Abstract] Components and parts Inventory, Raw Materials and Purchased Parts, Net of Reserves Work-in-process Inventory, Work in Process, Net of Reserves Finished goods Inventory, Finished Goods, Net of Reserves Inventories Inventory, Net Schedule of new accounting pronouncements and changes in accounting principles Schedule of New Accounting Pronouncements and Changes in Accounting Principles [Table Text Block] Disaggregation of revenue Disaggregation of Revenue [Table Text Block] INCOME TAXES Income Tax Disclosure [Text Block] Business Combinations [Abstract] Schedule of Goodwill [Table] Schedule of Goodwill [Table] Changes in carrying amount of goodwill Goodwill [Line Items] Goodwill [Roll Forward] Goodwill [Roll Forward] Document and Entity Information Entity Registrant Name Entity Registrant Name Entity Central Index Key Entity Central Index Key Document Type Document Type Document Period End Date Document Period End Date Amendment Flag Amendment Flag Current Fiscal Year End Date Current Fiscal Year End Date Entity Filer Category Entity Filer Category Entity Common Stock, Shares Outstanding (in shares) Entity Common Stock, Shares Outstanding Document Fiscal Year Focus Document Fiscal Year Focus Document Fiscal Period Focus Document Fiscal Period Focus Summary information by operating segment Operating Income (Loss) Operating Income (Loss) Schedule of the fair value hierarchy of assets and liabilities measured at fair value on a recurring basis Fair Value, Assets Measured on Recurring Basis [Table Text Block] ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) Comprehensive Income (Loss) Note [Text Block] INTANGIBLE AND OTHER ASSETS INTANGIBLE AND OTHER ASSETS Intangible and Other Assets Disclosure [Text Block] The entire disclosure for intangibles and other assets. Schedule of Indefinite-Lived Intangible Assets [Table] Schedule of Indefinite-Lived Intangible Assets [Table] MISFIT Trade Names MISFIT [Member] Trade Names MISFIT [Member] MICHELE Trade Name MICHELE [Member] Trade Name MICHELE [Member] Indefinite-lived Intangible Assets [Line Items] Indefinite-lived Intangible Assets [Line Items] Impairment charge recognized Goodwill, Impairment Loss Derivative Instruments, Gain (Loss) [Table] Derivative Instruments, Gain (Loss) [Table] Other income (expense)-net Other Nonoperating Income (Expense) [Member] Interest expense Interest Expense [Member] Reclassification out of Accumulated Other Comprehensive Income [Axis] Reclassification out of Accumulated Other Comprehensive Income [Axis] Reclassification out of Accumulated Other Comprehensive Income [Domain] Reclassification out of Accumulated Other Comprehensive Income [Domain] Amount Reclassified from AOCI Reclassification out of Accumulated Other Comprehensive Income [Member] Hedging Designation [Axis] Hedging Designation [Axis] Hedging Designation [Domain] Hedging Designation [Domain] Designated as cash flow hedges Designated as Hedging Instrument [Member] Not designated as hedging instruments Not Designated as Hedging Instrument [Member] Effective portion of gains and losses on derivative instruments Derivative Instruments, Gain (Loss) [Line Items] Total gain (loss) reclassified from accumulated other comprehensive income (loss) Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net Total gain (loss) recognized in income Derivative, Gain (Loss) on Derivative, Net Income Statement [Abstract] Cost of sales Cost of Goods and Services Sold Gross profit Gross Profit Operating expenses: Operating Expenses [Abstract] Selling, general and administrative expenses Selling, General and Administrative Expense Goodwill and trade name impairments Goodwill and Intangible Asset Impairment Total operating expenses Operating Expenses Operating income (loss) Other income (expense) - net Other Nonoperating Income (Expense) Income (loss) before income taxes Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Provision for income taxes Income Tax Expense (Benefit) Net income (loss) Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Less: Net income attributable to noncontrolling interest Net Income (Loss) Attributable to Noncontrolling Interest Net income (loss) attributable to Fossil Group, Inc. Other comprehensive income (loss), net of taxes: Other Comprehensive Income (Loss), Net of Tax [Abstract] Currency translation adjustment Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax, Portion Attributable to Parent Cash flow hedges - net change Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Net of Tax Total other comprehensive income (loss) Other Comprehensive Income (Loss), Net of Tax Total comprehensive income (loss) Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest Less: Comprehensive income attributable to noncontrolling interest Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest Comprehensive income (loss) attributable to Fossil Group, Inc. Comprehensive Income (Loss), Net of Tax, Attributable to Parent Earnings (loss) per share: Earnings Per Share [Abstract] Basic (in dollars per share) Diluted (in dollars per share) Weighted average common shares outstanding: Basic (in shares) Diluted (in shares) FAIR VALUE MEASUREMENTS Fair Value Disclosures [Text Block] INVENTORIES Inventory Disclosure [Text Block] Intangible and Other Assets [Table] Intangible and Other Assets [Table] Schedule of intangibles and other assets. 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] Customer lists Customer Lists [Member] Patents Patents [Member] Noncompete agreement Noncompete Agreements [Member] Developed technology Developed Technology Rights [Member] Other Other Intangible Assets [Member] Other Assets [Axis] Other Assets [Axis] Information by type or class of other assets. Other Assets [Domain] Other Assets [Domain] The major type or class of other assets. Key money deposits Key Money Deposits [Member] Represents key money deposits. Other deposits Other Deposits [Member] Represents other deposits. Deferred compensation plan assets Deferred Compensation Plan Assets [Member] Represents deferred compensation plan assets. Deferred tax asset-net Deferred Tax Asset [Member] Represents deferred tax assets. Restricted cash Restricted Cash [Member] Represents restricted cash. Shop-in-shop Shop In Shop [Member] Represents information pertaining to shop-in-shop. Tax receivable Long Term Tax Receivable [Member] Long Term Tax Receivable [Member] Forward contracts Forward Contracts [Member] Investments Investments [Member] Other Assets Other [Member] Represents other assets that are not specifically identified. Intangible and other assets Intangible and Other Assets [Line Items] Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. Intangibles-subject to amortization: Finite-Lived Intangible Assets, Net [Abstract] Useful Lives Finite-Lived Intangible Asset, Useful Life Gross Amount Finite-Lived Intangible Assets, Gross Accumulated Amortization Finite-Lived Intangible Assets, Accumulated Amortization Intangibles-not subject to amortization: Indefinite-lived Intangible Assets (Excluding Goodwill) [Abstract] Trade names Indefinite-Lived Trade Names Other assets: Prepaid Expense and Other Assets [Abstract] Gross Amount Other Assets Accumulated Amortization Accumulated Amortization Related to Other Assets Accumulated Amortization Related To Other Assets. Gross Amount Total Intangibles and Other Assets Total Intangibles And Other Assets. Accumulated Amortization Intangible and Other, Assets Accumulated Amortization The cumulative amount of amortization (related to Intangible And Other Assets) that has been recognized in the income statement. Total intangible and other assets-net Intangible Assets and Other Assets, Noncurrent Sum of the carrying amounts of all intangible assets, excluding goodwill, as of the balance sheet date, net of accumulated amortization and impairment charges. Also includes the aggregate carrying amount, as of the balance sheet date, of noncurrent assets not separately disclosed in the balance sheet due to materiality considerations. Noncurrent assets are expected to be realized or consumed after one year. Amortization period based on initial lease term Commercial Property Initial Lease Term Represents the initial term of the commercial property lease. Schedule of intangible and other assets-net Schedule of Intangible and Other Assets [Table Text Block] Schedule of Intangible and Other Assets. Schedule of estimated aggregate future amortization expense by fiscal year for intangible assets Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block] Summary of stock options and stock appreciation rights activity Schedule of Share-based Compensation, Stock Options and Stock Appreciation Rights Award Activity [Table Text Block] Summary of stock options and stock appreciation rights outstanding and exercisable Share-based Compensation, Activity [Table Text Block] Summary of restricted stock, restricted stock units and performance restricted stock units activity Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity [Table Text Block] Fair value of designated forward contracts Derivative, Fair Value, Net Hedged amount Derivative, Amount of Hedged Item Derivative, term of contract Derivative, Term of Contract Shares Share Based Compensation Arrangement by Share Based Payment Award Options and Stock Appreciation Rights Additional Disclosures [Roll Forward] Outstanding at beginning of period (in shares) Share Based Compensation Arrangement by Share Based Payment Award Options and Stock Appreciation Rights Outstanding Number The number of shares reserved for issuance under stock option and stock appreciation rights agreements awarded under the plan that validly exist and are outstanding as of the balance sheet date, including vested options. Granted (in shares) Share Based Compensation Arrangement by Share Based Payment Award Options and Stock Appreciation Rights Grants in Period Gross Gross number of share options and stock appreciation rights granted during the period. Exercised (in shares) Stock Issued During Period Shares Stock Options and Stock Appreciation Rights Exercised Number of share options and stock appreciation rights exercised during the current period. Forfeited or expired (in shares) Share Based Compensation Arrangement by Share Based Payment Award Options and Stock Appreciation Rights Forfeitures and Expirations in Period For presentations that combine terminations, the number of shares under options and stock appreciation rights that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option and stock appreciation right plan or that expired. Outstanding at end of period (in shares) Exercisable at end of period (in shares) Share Based Compensation Arrangement by Share Based Payment Award Options and Stock Appreciation Rights Exercisable Number The number of shares into which fully or partially vested stock options and stock appreciation rights outstanding as of the balance sheet date can be currently converted under the option and stock appreciation rights plans. Weighted- Average Exercise Price Share Based Compensation Arrangement by Share Based Payment Award, Options and Stock Appreciation Rights Outstanding Weighted Average Exercise Price [Roll Forward] Outstanding at beginning of period (in dollars per share) Share Based Compensation Arrangement by Share Based Payment Award, Options and Stock Appreciation Rights Outstanding Weighted Average Exercise Price Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option and stock appreciation rights plans. Granted (in dollars per share) Share Based Compensation Arrangements By Share Based Payment Award, Options And Stock Appreciation Rights, Grants In Period, Weighted Average Exercise Price Share Based Compensation Arrangements By Share Based Payment Award, Options And Stock Appreciation Rights, Grants In Period, Weighted Average Exercise Price Exercised (in dollars per share) Share Based Compensation Arrangements by Share Based Payment Award, Options and Stock Appreciation Rights Exercises in Period Weighted Average Exercise Price Weighted average price at which option holders acquired shares when converting their stock options and stock appreciation rights into shares. Forfeited or expired (in dollars per share) Share Based Compensation Arrangement by Share Based Payment Award, Options and Stock Appreciation Rights Forfeitures and Expirations in Period Weighted Average Exercise Price Weighted average price of options and stock appreciation rights that were either forfeited or expired. Outstanding at end of period (in dollars per share) Exercisable at end of period (in dollars per share) Share Based Compensation Arrangement by Share Based Payment Award, Options and Stock Appreciation Rights Exercisable Weighted Average Exercise Price The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options and stock appreciation rights outstanding and currently exercisable under the stock option and stock appreciation right plan. Weighted- Average Remaining Contractual Term Share Based Compensation Arrangement by Share Based Payment Award, Options and Stock Appreciation Rights Additional General Disclosures [Abstract] Outstanding Share Based Compensation Arrangement by Share Based Payment Award, Options and Stock Appreciation Rights Outstanding Weighted Average Remaining Contractual Term Weighted average remaining contractual term for option awards and stock appreciation rights outstanding. Exercisable at end of period Share Based Compensation Arrangement by Share Based Payment Award, Options and Stock Appreciation Rights Exercisable Weighted Average Remaining Contractual Term Weighted average remaining contractual term for vested portions of options and stock appreciation rights outstanding and currently exercisable. Aggregate Intrinsic Value Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract] Aggregate intrinsic value outstanding Share Based Compensation Arrangement by Share Based Payment Award, Options and Stock Appreciation Rights Outstanding Intrinsic Value Amount of difference between fair value of the underlying shares reserved for issuance and exercise price of options and stock appreciation rights outstanding. Exercised Share Based Compensation Arrangement by Share Based Payment Award, Options and Stock Appreciation Rights Exercises in Period Total Intrinsic Value The total accumulated difference between fair values of underlying shares on dates of exercise and exercise price on options and stock appreciation rights which were exercised (or share units converted) into shares during the reporting period under the plan. Exercisable at end of period Share Based Compensation Arrangement by Share Based Payment Award, Options and Stock Appreciation Rights Exercisable Intrinsic Value Amount of difference between fair value of the underlying shares reserved for issuance and exercise price of vested portions of options and stock appreciation rights outstanding and currently exercisable. Statement of Cash Flows [Abstract] Operating Activities: Net Cash Provided by (Used in) Operating Activities, Continuing Operations [Abstract] Net Income (loss) Adjustments to reconcile net loss to net cash provided by operating activities: Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Depreciation, amortization and accretion Depreciation, Amortization and Accretion, Net Stock-based compensation Share-based Compensation Decrease in allowance for returns and markdowns Other Noncash Income (Expense) Loss on disposal of assets Gain (Loss) on Disposition of Property Plant Equipment Property, plant and equipment and other long-lived asset impairment losses Non-cash restructuring charges Restructuring Charges, Noncash Restructuring Charges, Noncash Increase in allowance for doubtful accounts Provision for Doubtful Accounts Loss on extinguishment of debt Deferred income taxes and other Increase (Decrease) in Deferred Income Taxes Contingent consideration remeasurement Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Liability Changes in operating assets and liabilities, net of effect of acquisitions: Increase (Decrease) in Operating Capital [Abstract] Accounts receivable Increase (Decrease) in Accounts Receivable Inventories Increase (Decrease) in Inventories Prepaid expenses and other current assets Increase (Decrease) in Prepaid Expense and Other Assets Accounts payable Increase (Decrease) in Accounts Payable Accrued expenses Increase (Decrease) in Accrued Liabilities Income taxes payable Increase (Decrease) in Income Taxes Payable Net cash provided by operating activities Net Cash Provided by (Used in) Operating Activities Investing Activities: Net Cash Provided by (Used in) Investing Activities, Continuing Operations [Abstract] Additions to property, plant and equipment Payments to Acquire Property, Plant, and Equipment (Increase) decrease in intangible and other assets Payments for (Proceeds from) Productive Assets Proceeds from the sale of property, plant and equipment Proceeds from Sale of Property, Plant, and Equipment Net cash used in investing activities Net Cash Provided by (Used in) Investing Activities Financing Activities: Net Cash Provided by (Used in) Financing Activities, Continuing Operations [Abstract] Proceeds from exercise of stock options Proceeds from Stock Options Exercised Net settlement of restricted grants, restricted stock units and preferred stock units Payments Related to Tax Withholding for Share-based Compensation Distribution of noncontrolling interest earnings Payments of Ordinary Dividends, Noncontrolling Interest Debt borrowings Proceeds from Notes Payable Debt payments Repayments of Notes Payable Payment for shares of Fossil Accessories South Africa Pty. Ltd. Payments to Noncontrolling Interests Debt issuance costs Payments of Debt Issuance Costs Net cash (used in) provided by financing activities Net Cash Provided by (Used in) Financing Activities Effect of exchange rate changes on cash, cash equivalents, and restricted cash Effect of Exchange Rate on Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents Net increase in cash, cash equivalents, and restricted cash Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect Cash, cash equivalents, and restricted cash: Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents [Abstract] Beginning of period Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents End of period RESTRUCTURING Restructuring and Related Activities Disclosure [Text Block] Stockholders' Equity Note [Abstract] STOCKHOLDERS' EQUITY Stockholders' Equity Note Disclosure [Text Block] 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] Restricted Stock Units (RSUs) Restricted Stock Units (RSUs) [Member] Stock-based compensation plans disclosures Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Number of Shares Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward] Nonvested at beginning of period (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number Granted (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period Vested (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period Forfeited (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period Nonvested at end of period (in shares) Weighted-Average Grant Date Fair Value Per Share Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract] Nonvested at beginning of period (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value Granted (in dollars 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 Vested (in dollars 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 (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value Nonvested at end of period (in dollars per share) Fair value of restricted stock and restricted stock units vested Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value Statement of Financial Position [Abstract] Accounts receivable - allowances Allowance For Doubtful Accounts Receivable and Sales Returns Current Valuation allowance for trade and other receivables due to an Entity within one year (or the normal operating cycle, whichever is longer) that are expected to be uncollectible and valuation allowance for the amount of products sold that the entity expects to be returned by the purchaser. Property, plant and equipment, accumulated depreciation Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Common stock, shares issued (in shares) Common Stock, Shares, Issued Common stock, shares outstanding (in shares) Common Stock, Shares, Outstanding Restructuring Type [Axis] Restructuring Type [Axis] Type of Restructuring [Domain] Type of Restructuring [Domain] Store closures Store Closure [Member] Store Closure [Member] Professional services Professional Services [Member] Professional Services [Member] Severance and employee-related benefits Employee Severance [Member] Restructuring Reserve [Roll Forward] Restructuring Reserve [Roll Forward] Beginning balance Restructuring Reserve Cash Payments Payments for Restructuring Non-cash Items Restructuring Reserve, Settled without Cash Ending balance Assets Assets [Abstract] Current assets: Assets, Current [Abstract] Cash and cash equivalents Cash and Cash Equivalents, at Carrying Value Accounts receivable - net of allowances of $25,085 and $88,128, respectively Accounts Receivable, Net, Current Inventories Prepaid expenses and other current assets Prepaid Expense and Other Assets, Current Total current assets Assets, Current Property, plant and equipment - net of accumulated depreciation of $445,685 and $431,914, respectively Intangible and other assets-net Total long-term assets Assets, Noncurrent Total assets Assets Liabilities and Stockholders’ Equity Liabilities and Equity [Abstract] Current liabilities: Liabilities, Current [Abstract] Accounts payable Accounts Payable, Current Short-term and current portion of long-term debt Debt, Current Accrued expenses: Accrued Liabilities, Current [Abstract] Compensation Employee-related Liabilities, Current Royalties Accrued Royalties, Current Customer liabilities Contract with Customer, Liability, Current Transaction taxes Taxes Payable, Current Other Other Accrued Liabilities, Current Income taxes payable Accrued Income Taxes, Current Total current liabilities Liabilities, Current Long-term income taxes payable Accrued Income Taxes, Noncurrent Deferred income tax liabilities Deferred Income Tax Liabilities, Net Long-term debt Long-term Debt and Capital Lease Obligations Other long-term liabilities Other Liabilities, Noncurrent Total long-term liabilities Liabilities, Noncurrent Commitments and contingencies (Note 13) Commitments and Contingencies Stockholders’ equity: Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest [Abstract] Common stock, 49,339 and 48,643 shares issued and outstanding at June 30, 2018 and December 30, 2017, respectively Common Stock, Value, Issued Additional paid-in capital Additional Paid in Capital, Common Stock Retained earnings Retained Earnings (Accumulated Deficit) Accumulated other comprehensive income (loss) Accumulated Other Comprehensive Income (Loss), Net of Tax Total Fossil Group, Inc. stockholders’ equity Stockholders' Equity Attributable to Parent Noncontrolling interest Stockholders' Equity Attributable to Noncontrolling Interest Total stockholders’ equity Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest Total liabilities and stockholders’ equity Liabilities and Equity Summary of changes in equity attributable to controlling and noncontrolling interest Schedule of Stockholders' Equity and Noncontrolling Interest Disclosure [Table Text Block] Schedule Of Stockholders Equity And Noncontrolling Interest Disclosure Table Text Block. SEGMENT INFORMATION Segment Reporting Disclosure [Text Block] Schedule of inventories Schedule of Inventory, Current [Table Text Block] Commitments and Contingencies Disclosure [Abstract] COMMITMENTS AND CONTINGENCIES Commitments and Contingencies Disclosure [Text Block] Initial Application Period Cumulative Effect Transition [Axis] Initial Application Period Cumulative Effect Transition [Axis] Initial Application Period Cumulative Effect Transition [Domain] Initial Application Period Cumulative Effect Transition [Domain] Without Adoption of ASU 2014-09 Calculated under Revenue Guidance in Effect before Topic 606 [Member] Impact of Adoption of ASU 2014-09 Difference between Revenue Guidance in Effect before and after Topic 606 [Member] Adjustments for New Accounting Pronouncements [Axis] Adjustments for New Accounting Pronouncements [Axis] Type of Adoption [Domain] Type of Adoption [Domain] Accounting Standards Update 2014-09 Accounting Standards Update 2014-09 [Member] Accounts receivable Liabilities: Liabilities [Abstract] Authorizations remaining Stock Repurchase Program, Remaining Authorized Repurchase Amount Payments to noncontrolling interests Present value of purchase price Noncontrolling Interest, Decrease from Redemptions or Purchase of Interests Variable consideration in accrued expenses Noncontrolling Interest, Purchase of Interests, Current Amount Noncontrolling Interest, Purchase of Interests, Current Amount Variable consideration in other long-term liabilities Noncontrolling Interest, Purchase of Interests, Non-Current Amount Noncontrolling Interest, Purchase of Interests, Non-Current Amount Income tax (benefit) expense Effective tax rate Effective Income Tax Rate Reconciliation, Percent Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] Balance Sheet Location [Axis] Balance Sheet Location [Axis] Balance Sheet Location [Domain] Balance Sheet Location [Domain] Prepaid expenses and other current assets Prepaid Expenses and Other Current Assets [Member] Intangible and other assets-net Intangible And Other Assets [Member] Line item in the statement of financial position Accrued expenses- other Accrued Expenses Other [Member] Line item in the statement of financial position in which the fair value amounts of the derivative instruments are included. Other long-term liabilities Other Liabilities [Member] Fair value of derivative instruments Derivatives, Fair Value [Line Items] Asset derivatives, fair value Derivative Asset, Fair Value, Gross Asset Liability derivatives, fair value Derivative Liability, Fair Value, Gross Liability Net gain expected to be reclassified into earnings within the next twelve months Foreign Currency Cash Flow Hedge Gain (Loss) to be Reclassified During Next 12 Months REVENUE Revenue from Contract with Customer [Text Block] Equity Components [Axis] Equity Components [Axis] Equity Component [Domain] Equity Component [Domain] Cash Flow Hedges Accumulated Net Gain (Loss) from Cash Flow Hedges Attributable to Parent [Member] Currency [Axis] Currency [Axis] All Currencies [Domain] All Currencies [Domain] Euro Euro Member Countries, Euro Canadian dollar Canada, Dollars British pound United Kingdom, Pounds Japanese yen Japan, Yen Mexican peso Mexico, Pesos Australian dollar Australia, Dollars U.S. dollar United States of America, Dollars Foreign currency cash flow hedge maximum length of projection term Maximum Length of Time, Foreign Currency Cash Flow Hedge Forecasted purchases to manage fluctuations (up to) Cash Flow Hedge Coverage Percentage Maximum percentage of cash flow hedge coverage as defined by policy. Hedges resulted in ineffectiveness Derivative Instruments, Gain (Loss) Recognized in Income, Ineffective Portion and Amount Excluded from Effectiveness Testing, Net Gain (loss) reclassified into earnings Notional amount Derivative, Notional Amount Total expected costs to be incurred Restructuring and Related Cost, Expected Cost Restructuring, expected remaining costs Restructuring and Related Cost, Expected Cost Remaining Schedule of outstanding forward contracts Schedule of Notional Amounts of Outstanding Derivative Positions [Table Text Block] Schedule of effective portion of gains and losses on derivative instruments recognized in other comprehensive income (loss), net of taxes Schedule of Derivative Instruments, Effect on Other Comprehensive Income (Loss) [Table Text Block] Schedule of effective portion of gains and losses on derivative instruments recognized in other comprehensive income (loss), net of taxes reclassified into earnings and derivatives not designated as hedging instruments recorded directly to earnings Derivative Instruments, Gain (Loss) [Table Text Block] Schedule of fair value amounts for derivative instruments as separate asset and liability values on a gross basis and their location on condensed consolidated balance sheets Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block] Range of Exercise Prices Price [Axis] Information by range of exercise prices. Price [Domain] Price [Domain] Identification of range of exercise prices. $29.78 - $47.99 Range Two Of Exercise Prices [Member] Represents the exercise price range two of the outstanding stock options. $13.65 - $29.49 Range One Of Exercise Prices [Member] Represents the exercise price range one of the outstanding stock options. $55.04 - $83.83 Range Three Of Exercise Prices [Member] Represents the exercise price range three of the outstanding stock options. $95.91 - $131.46 Range Four Of Exercise Prices [Member] Represents the exercise price range four of the outstanding stock options. Cash Stock Appreciation Rights Cash Stock Appreciation Rights [Member] Cash Stock Appreciation Rights [Member] Stock options Employee And Nonemployee Stock Option [Member] An arrangement whereby an employee or non-employee is entitled to receive in the future, subject to vesting and other restrictions, a number of shares in the entity at a specified price, as defined in the agreement. Stock appreciation rights Stock Appreciation Rights (SARs) [Member] Equity instruments other than options outstanding, lower range (in dollars per share) Share Based Compensation Shares Authorized Under Equity Plans Other than Options Exercise Price Range Lower Range Limit The floor of a customized range of exercise prices for purposes of disclosing shares potentially issuable under outstanding stock appreciation rights awards on all stock appreciation rights plans and other required information pertaining to awards in the customized range. Equity instruments other than options outstanding, upper range (in dollars per share) Share Based Compensation Shares Authorized Under Equity Plans Other than Options Exercise Price Range Upper Range Limit The ceiling of a customized range of exercise prices for purposes of disclosing shares potentially issuable under outstanding stock appreciation rights awards on all stock appreciation rights plans and other required information pertaining to awards in the customized range. Equity instruments other than options outstanding, number of shares (in shares) Equity instruments other than options outstanding, weighted- average exercise price (in dollars per share) Share Based Compensation Arrangement by Share Based Payment Award Equity Instruments Other than Options Outstanding Weighted Average Exercise Price Weighted average price at which grantees can acquire the shares reserved for issuance under the stock compensation plan, other than options. Equity instruments other than options outstanding, weighted- average remaining contractual term Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Outstanding, Weighted Average Remaining Contractual Terms Equity instruments other than options exercisable, number of shares (in shares) Share Based Compensation Arrangement by Share Based Payment Award Equity Instruments Other than Options Exercisable Number The number of shares into which equity instruments other than options outstanding as of the balance sheet date can be currently converted under the stock-based compensation plan. Equity instruments other than options exercisable, weighted- average exercise price (in dollars per share) Share Based Compensation Arrangement by Share Based Payment Award Equity Instruments Other than Options Exercisable Weighted Average Exercise Price The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on equity instruments, other than options, outstanding and currently exercisable under the stock-based compensation plan. Stock options outstanding, lower range (in dollars per share) Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Lower Range Limit Stock options outstanding, upper range (in dollars per share) Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Upper Range Limit Stock options outstanding, number of shares (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number Stock options outstanding, weighted- average exercise price (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price Stock options outstanding, weighted- average remaining contractual term Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term Stock options exercisable, number of shares (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number Stock options exercisable, weighted- average exercise price (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Exercise Price Accumulated Other Comprehensive Income (Loss) [Table] Accumulated Other Comprehensive Income (Loss) [Table] Currency Translation Adjustments Accumulated Foreign Currency Adjustment Attributable to Parent [Member] Pension Plan Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member] Total AOCI Attributable to Parent [Member] Accumulated Other Comprehensive Income (Loss) [Line Items] Accumulated Other Comprehensive Income (Loss) [Line Items] Accumulated Other Comprehensive Income (Loss), Net of Tax AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward] Beginning balance Other comprehensive income (loss) before reclassifications Other Comprehensive Income (Loss), before Reclassifications, before Tax Tax (expense) benefit Other Comprehensive Income (Loss) before Reclassifications, Tax Amounts reclassed from accumulated other comprehensive income Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax Tax (expense) benefit Reclassification from AOCI, Current Period, Tax Ending balance Amortization expense for intangible assets Amortization of Intangible Assets Estimated aggregate future amortization expense by fiscal year Finite-Lived Intangible Assets, Amortization Expense, Maturity Schedule [Abstract] 2018 (remaining) Finite-Lived Intangible Assets, Amortization Expense, Remainder of Fiscal Year 2019 Finite-Lived Intangible Assets, Amortization Expense, Year Two 2020 Finite-Lived Intangible Assets, Amortization Expense, Year Three 2021 Finite-Lived Intangible Assets, Amortization Expense, Year Four 2022 Finite-Lived Intangible Assets, Amortization Expense, Year Five 2023 Finite-Lived Intangible Assets, Amortization Expense, after Year Five Difference between Revenue Guidance in Effect before and after Topic 606 Markdowns adjustment, net of taxes Accounting Standards Update 2014-09, Markdown Adjustment [Member] Accounting Standards Update 2014-09, Markdown Adjustment [Member] Sales adjustment, net of taxes Accounting Standards Update 2014-09, Sales Adjustment [Member] Accounting Standards Update 2014-09, Sales Adjustment [Member] 12/30/2017 Cumulative effect on retained earnings, net of tax Cumulative Effect on Retained Earnings, Net of Tax June 30, 2018 Cash and cash equivalents Restricted cash included in prepaid expenses and other current assets Restricted Cash, Current Restricted cash included in intangible and other assets-net Restricted Cash, Noncurrent Cash, cash equivalents and restricted cash Controlling and Noncontrolling Interest [Table] Controlling and Noncontrolling Interest [Table] Schedule of controlling and noncontrolling interest. Fossil Group, Inc. Stockholders’ Equity Parent [Member] Noncontrolling Interest Noncontrolling Interest [Member] Summary of changes in equity attributable to controlling and noncontrolling interest Controlling and Noncontrolling Interest [Line Items] Stockholders' Equity Attributable to Controlling and Noncontrolling Interest [Roll Forward] Stockholders' Equity Attributable to Controlling and Noncontrolling Interest [Roll Forward] Stockholders' Equity Attributable to Controlling and Noncontrolling Interest [Roll Forward] Cumulative Effect of New Accounting Principle in Period of Adoption Cumulative Effect of New Accounting Principle in Period of Adoption Cumulative effect on retained earnings, net of tax Currency translation adjustment Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax Cash flow hedges - net change Common stock issued upon exercise of stock options Stock Issued During Period, Value, Share-based Compensation, Gross Distribution of noncontrolling interest earnings and other Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders Net settlement of restricted stock units and preferred stock units to satisfy employee tax withholding upon vesting Adjustment to Additional Paid in Capital, Income Tax Effect from Share-based Compensation, Net Stock-based compensation expense Adjustments to Additional Paid in Capital, Share-based Compensation, Requisite Service Period Recognition Cumulative effect on retained earnings, tax Income Tax Effects Allocated Directly to Equity, Cumulative Effect of Change in Accounting Principle Net gain of forward contracts Unrealized Gain Loss On Foreign Exchange Forward Contracts, If Settled, Recognized In Other Comprehensive Income Unrealized Gain Loss On Foreign Exchange Forward Contracts, If Settled, Recognized In Other Comprehensive Income Measurement Frequency [Axis] Measurement Frequency [Axis] Fair Value, Measurement Frequency [Domain] Fair Value, Measurement Frequency [Domain] Fair Value Measurement, Recurring Basis Fair Value, Measurements, Recurring [Member] Level 1 Fair Value, Inputs, Level 1 [Member] Level 2 Fair Value, Inputs, Level 2 [Member] Assets: Forward contracts Foreign Currency Contract, Asset, Fair Value Disclosure Investment in publicly traded mutual funds Defined Benefit Plan, Plan Assets, Amount Interest rate swap Interest Rate Derivative Assets, at Fair Value Total Assets, Fair Value Disclosure Forward contracts Foreign Currency Contracts, Liability, Fair Value Disclosure Total Financial and Nonfinancial Liabilities, Fair Value Disclosure Numerators and denominators used in the computations of both basic and diluted EPS Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Schedule of Cash and Cash Equivalents Schedule of Cash and Cash Equivalents [Table Text Block] Summary information by operating segment Schedule of Segment Reporting Information, by Segment [Table Text Block] Schedule of net sales for each class of similar products Revenue from External Customers by Products and Services [Table Text Block]