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Employee Benefit Plans (Details 4) (USD $)
12 Months Ended
Jan. 03, 2015
Stock options  
Stock-based compensation plans disclosures  
Stock Options Outstanding, Number Of Shares 428,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
/ us-gaap_AwardTypeAxis
= fosl_EmployeeAndNonemployeeStockOptionMember
Stock Options Outstanding, Weighted- Average Exercise Price (in dollars per share) $ 79.24us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice
/ us-gaap_AwardTypeAxis
= fosl_EmployeeAndNonemployeeStockOptionMember
Stock Options Outstanding, Weighted- Average Remaining Contractual Term 5 years 7 months 6 days
Stock Options Exercisable, Number Of Shares 373,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber
/ us-gaap_AwardTypeAxis
= fosl_EmployeeAndNonemployeeStockOptionMember
Stock Options Exercisable, Weighted- Average Exercise Price (in dollars per share) $ 72.29us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice
/ us-gaap_AwardTypeAxis
= fosl_EmployeeAndNonemployeeStockOptionMember
Stock appreciation rights  
Stock-based compensation plans disclosures  
Stock Appreciation Rights Outstanding, Number Of Shares 235,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber
/ us-gaap_AwardTypeAxis
= us-gaap_StockAppreciationRightsSARSMember
Stock Appreciation Rights Outstanding, Weighted- Average Exercise Price (in dollars per share) $ 95.68fosl_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsOutstandingWeightedAverageExercisePrice
/ us-gaap_AwardTypeAxis
= us-gaap_StockAppreciationRightsSARSMember
Stock Appreciation Rights Outstanding, Weighted- Average Remaining Contractual Term 5 years 7 months 6 days
Stock Appreciation Rights Exercisable, Number Of Shares 106,000fosl_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsExercisableNumber
/ us-gaap_AwardTypeAxis
= us-gaap_StockAppreciationRightsSARSMember
Stock Appreciation Rights Exercisable, Weighted- Average Exercise Price (in dollars per share) $ 77.52fosl_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsExercisableWeightedAverageExercisePrice
/ us-gaap_AwardTypeAxis
= us-gaap_StockAppreciationRightsSARSMember
Range Of Exercise Prices $13.65 - $21.51 | Stock options  
Stock-based compensation plans disclosures  
Stock Options Outstanding, lower range (in dollars per share) $ 13.65us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeLowerRangeLimit
/ us-gaap_AwardTypeAxis
= fosl_EmployeeAndNonemployeeStockOptionMember
/ fosl_PriceAxis
= fosl_RangeOneOfExercisePricesMember
Stock Options Outstanding, upper range (in dollars per share) $ 21.51us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeUpperRangeLimit
/ us-gaap_AwardTypeAxis
= fosl_EmployeeAndNonemployeeStockOptionMember
/ fosl_PriceAxis
= fosl_RangeOneOfExercisePricesMember
Stock Options Outstanding, Number Of Shares 56,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
/ us-gaap_AwardTypeAxis
= fosl_EmployeeAndNonemployeeStockOptionMember
/ fosl_PriceAxis
= fosl_RangeOneOfExercisePricesMember
Stock Options Outstanding, Weighted- Average Exercise Price (in dollars per share) $ 15.09us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice
/ us-gaap_AwardTypeAxis
= fosl_EmployeeAndNonemployeeStockOptionMember
/ fosl_PriceAxis
= fosl_RangeOneOfExercisePricesMember
Stock Options Outstanding, Weighted- Average Remaining Contractual Term 3 years 7 months 6 days
Stock Options Exercisable, Number Of Shares 56,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber
/ us-gaap_AwardTypeAxis
= fosl_EmployeeAndNonemployeeStockOptionMember
/ fosl_PriceAxis
= fosl_RangeOneOfExercisePricesMember
Stock Options Exercisable, Weighted- Average Exercise Price (in dollars per share) $ 15.09us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice
/ us-gaap_AwardTypeAxis
= fosl_EmployeeAndNonemployeeStockOptionMember
/ fosl_PriceAxis
= fosl_RangeOneOfExercisePricesMember
Range Of Exercise Prices $13.65 - $21.51 | Stock appreciation rights  
Stock-based compensation plans disclosures  
Stock Appreciation Rights Outstanding, lower range (in dollars per share) $ 13.65fosl_ShareBasedCompensationSharesAuthorizedUnderEquityPlansOtherThanOptionsExercisePriceRangeLowerRangeLimit
/ us-gaap_AwardTypeAxis
= us-gaap_StockAppreciationRightsSARSMember
/ fosl_PriceAxis
= fosl_RangeOneOfExercisePricesMember
Stock Appreciation Rights Outstanding, upper range (in dollars per share) $ 21.51fosl_ShareBasedCompensationSharesAuthorizedUnderEquityPlansOtherThanOptionsExercisePriceRangeUpperRangeLimit
/ us-gaap_AwardTypeAxis
= us-gaap_StockAppreciationRightsSARSMember
/ fosl_PriceAxis
= fosl_RangeOneOfExercisePricesMember
Stock Appreciation Rights Outstanding, Number Of Shares 18,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber
/ us-gaap_AwardTypeAxis
= us-gaap_StockAppreciationRightsSARSMember
/ fosl_PriceAxis
= fosl_RangeOneOfExercisePricesMember
Stock Appreciation Rights Outstanding, Weighted- Average Exercise Price (in dollars per share) $ 13.65fosl_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsOutstandingWeightedAverageExercisePrice
/ us-gaap_AwardTypeAxis
= us-gaap_StockAppreciationRightsSARSMember
/ fosl_PriceAxis
= fosl_RangeOneOfExercisePricesMember
Stock Appreciation Rights Outstanding, Weighted- Average Remaining Contractual Term 2 years 1 month 6 days
Stock Appreciation Rights Exercisable, Number Of Shares 18,000fosl_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsExercisableNumber
/ us-gaap_AwardTypeAxis
= us-gaap_StockAppreciationRightsSARSMember
/ fosl_PriceAxis
= fosl_RangeOneOfExercisePricesMember
Stock Appreciation Rights Exercisable, Weighted- Average Exercise Price (in dollars per share) $ 13.65fosl_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsExercisableWeightedAverageExercisePrice
/ us-gaap_AwardTypeAxis
= us-gaap_StockAppreciationRightsSARSMember
/ fosl_PriceAxis
= fosl_RangeOneOfExercisePricesMember
Range Of Exercise Prices $25.77 - $42.76 | Stock options  
Stock-based compensation plans disclosures  
Stock Options Outstanding, lower range (in dollars per share) $ 25.77us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeLowerRangeLimit
/ us-gaap_AwardTypeAxis
= fosl_EmployeeAndNonemployeeStockOptionMember
/ fosl_PriceAxis
= fosl_RangeTwoOfExercisePricesMember
Stock Options Outstanding, upper range (in dollars per share) $ 42.76us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeUpperRangeLimit
/ us-gaap_AwardTypeAxis
= fosl_EmployeeAndNonemployeeStockOptionMember
/ fosl_PriceAxis
= fosl_RangeTwoOfExercisePricesMember
Stock Options Outstanding, Number Of Shares 103,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
/ us-gaap_AwardTypeAxis
= fosl_EmployeeAndNonemployeeStockOptionMember
/ fosl_PriceAxis
= fosl_RangeTwoOfExercisePricesMember
Stock Options Outstanding, Weighted- Average Exercise Price (in dollars per share) $ 34.94us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice
/ us-gaap_AwardTypeAxis
= fosl_EmployeeAndNonemployeeStockOptionMember
/ fosl_PriceAxis
= fosl_RangeTwoOfExercisePricesMember
Stock Options Outstanding, Weighted- Average Remaining Contractual Term 3 years 8 months 12 days
Stock Options Exercisable, Number Of Shares 103,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber
/ us-gaap_AwardTypeAxis
= fosl_EmployeeAndNonemployeeStockOptionMember
/ fosl_PriceAxis
= fosl_RangeTwoOfExercisePricesMember
Stock Options Exercisable, Weighted- Average Exercise Price (in dollars per share) $ 34.94us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice
/ us-gaap_AwardTypeAxis
= fosl_EmployeeAndNonemployeeStockOptionMember
/ fosl_PriceAxis
= fosl_RangeTwoOfExercisePricesMember
Range Of Exercise Prices $25.77 - $42.76 | Stock appreciation rights  
Stock-based compensation plans disclosures  
Stock Appreciation Rights Outstanding, lower range (in dollars per share) $ 25.77fosl_ShareBasedCompensationSharesAuthorizedUnderEquityPlansOtherThanOptionsExercisePriceRangeLowerRangeLimit
/ us-gaap_AwardTypeAxis
= us-gaap_StockAppreciationRightsSARSMember
/ fosl_PriceAxis
= fosl_RangeTwoOfExercisePricesMember
Stock Appreciation Rights Outstanding, upper range (in dollars per share) $ 42.76fosl_ShareBasedCompensationSharesAuthorizedUnderEquityPlansOtherThanOptionsExercisePriceRangeUpperRangeLimit
/ us-gaap_AwardTypeAxis
= us-gaap_StockAppreciationRightsSARSMember
/ fosl_PriceAxis
= fosl_RangeTwoOfExercisePricesMember
Stock Appreciation Rights Outstanding, Number Of Shares 17,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber
/ us-gaap_AwardTypeAxis
= us-gaap_StockAppreciationRightsSARSMember
/ fosl_PriceAxis
= fosl_RangeTwoOfExercisePricesMember
Stock Appreciation Rights Outstanding, Weighted- Average Exercise Price (in dollars per share) $ 35.69fosl_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsOutstandingWeightedAverageExercisePrice
/ us-gaap_AwardTypeAxis
= us-gaap_StockAppreciationRightsSARSMember
/ fosl_PriceAxis
= fosl_RangeTwoOfExercisePricesMember
Stock Appreciation Rights Outstanding, Weighted- Average Remaining Contractual Term 2 years 6 months
Stock Appreciation Rights Exercisable, Number Of Shares 17,000fosl_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsExercisableNumber
/ us-gaap_AwardTypeAxis
= us-gaap_StockAppreciationRightsSARSMember
/ fosl_PriceAxis
= fosl_RangeTwoOfExercisePricesMember
Stock Appreciation Rights Exercisable, Weighted- Average Exercise Price (in dollars per share) $ 35.68fosl_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsExercisableWeightedAverageExercisePrice
/ us-gaap_AwardTypeAxis
= us-gaap_StockAppreciationRightsSARSMember
/ fosl_PriceAxis
= fosl_RangeTwoOfExercisePricesMember
Range Of Exercise Prices $43.92 - $67.10 | Stock options  
Stock-based compensation plans disclosures  
Stock Options Outstanding, lower range (in dollars per share) $ 43.92us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeLowerRangeLimit
/ us-gaap_AwardTypeAxis
= fosl_EmployeeAndNonemployeeStockOptionMember
/ fosl_PriceAxis
= fosl_RangeThreeOfExercisePricesMember
Stock Options Outstanding, upper range (in dollars per share) $ 67.10us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeUpperRangeLimit
/ us-gaap_AwardTypeAxis
= fosl_EmployeeAndNonemployeeStockOptionMember
/ fosl_PriceAxis
= fosl_RangeThreeOfExercisePricesMember
Stock Options Outstanding, Number Of Shares 5,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
/ us-gaap_AwardTypeAxis
= fosl_EmployeeAndNonemployeeStockOptionMember
/ fosl_PriceAxis
= fosl_RangeThreeOfExercisePricesMember
Stock Options Outstanding, Weighted- Average Exercise Price (in dollars per share) $ 43.92us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice
/ us-gaap_AwardTypeAxis
= fosl_EmployeeAndNonemployeeStockOptionMember
/ fosl_PriceAxis
= fosl_RangeThreeOfExercisePricesMember
Stock Options Outstanding, Weighted- Average Remaining Contractual Term 3 years
Stock Options Exercisable, Number Of Shares 5,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber
/ us-gaap_AwardTypeAxis
= fosl_EmployeeAndNonemployeeStockOptionMember
/ fosl_PriceAxis
= fosl_RangeThreeOfExercisePricesMember
Stock Options Exercisable, Weighted- Average Exercise Price (in dollars per share) $ 43.92us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice
/ us-gaap_AwardTypeAxis
= fosl_EmployeeAndNonemployeeStockOptionMember
/ fosl_PriceAxis
= fosl_RangeThreeOfExercisePricesMember
Range Of Exercise Prices $43.92 - $67.10 | Stock appreciation rights  
Stock-based compensation plans disclosures  
Stock Appreciation Rights Outstanding, lower range (in dollars per share) $ 43.92fosl_ShareBasedCompensationSharesAuthorizedUnderEquityPlansOtherThanOptionsExercisePriceRangeLowerRangeLimit
/ us-gaap_AwardTypeAxis
= us-gaap_StockAppreciationRightsSARSMember
/ fosl_PriceAxis
= fosl_RangeThreeOfExercisePricesMember
Stock Appreciation Rights Outstanding, upper range (in dollars per share) $ 67.10fosl_ShareBasedCompensationSharesAuthorizedUnderEquityPlansOtherThanOptionsExercisePriceRangeUpperRangeLimit
/ us-gaap_AwardTypeAxis
= us-gaap_StockAppreciationRightsSARSMember
/ fosl_PriceAxis
= fosl_RangeThreeOfExercisePricesMember
Stock Appreciation Rights Outstanding, Number Of Shares 3,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber
/ us-gaap_AwardTypeAxis
= us-gaap_StockAppreciationRightsSARSMember
/ fosl_PriceAxis
= fosl_RangeThreeOfExercisePricesMember
Stock Appreciation Rights Outstanding, Weighted- Average Exercise Price (in dollars per share) $ 67.10fosl_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsOutstandingWeightedAverageExercisePrice
/ us-gaap_AwardTypeAxis
= us-gaap_StockAppreciationRightsSARSMember
/ fosl_PriceAxis
= fosl_RangeThreeOfExercisePricesMember
Stock Appreciation Rights Outstanding, Weighted- Average Remaining Contractual Term 5 years 6 months
Stock Appreciation Rights Exercisable, Number Of Shares 2,000fosl_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsExercisableNumber
/ us-gaap_AwardTypeAxis
= us-gaap_StockAppreciationRightsSARSMember
/ fosl_PriceAxis
= fosl_RangeThreeOfExercisePricesMember
Stock Appreciation Rights Exercisable, Weighted- Average Exercise Price (in dollars per share) $ 67.10fosl_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsExercisableWeightedAverageExercisePrice
/ us-gaap_AwardTypeAxis
= us-gaap_StockAppreciationRightsSARSMember
/ fosl_PriceAxis
= fosl_RangeThreeOfExercisePricesMember
Range Of Exercise Prices $69.53 - $106.40 | Stock options  
Stock-based compensation plans disclosures  
Stock Options Outstanding, lower range (in dollars per share) $ 69.53us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeLowerRangeLimit
/ us-gaap_AwardTypeAxis
= fosl_EmployeeAndNonemployeeStockOptionMember
/ fosl_PriceAxis
= fosl_RangeFourOfExercisePricesMember
Stock Options Outstanding, upper range (in dollars per share) $ 106.40us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeUpperRangeLimit
/ us-gaap_AwardTypeAxis
= fosl_EmployeeAndNonemployeeStockOptionMember
/ fosl_PriceAxis
= fosl_RangeFourOfExercisePricesMember
Stock Options Outstanding, Number Of Shares 97,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
/ us-gaap_AwardTypeAxis
= fosl_EmployeeAndNonemployeeStockOptionMember
/ fosl_PriceAxis
= fosl_RangeFourOfExercisePricesMember
Stock Options Outstanding, Weighted- Average Exercise Price (in dollars per share) $ 80.86us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice
/ us-gaap_AwardTypeAxis
= fosl_EmployeeAndNonemployeeStockOptionMember
/ fosl_PriceAxis
= fosl_RangeFourOfExercisePricesMember
Stock Options Outstanding, Weighted- Average Remaining Contractual Term 6 years 3 months 18 days
Stock Options Exercisable, Number Of Shares 95,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber
/ us-gaap_AwardTypeAxis
= fosl_EmployeeAndNonemployeeStockOptionMember
/ fosl_PriceAxis
= fosl_RangeFourOfExercisePricesMember
Stock Options Exercisable, Weighted- Average Exercise Price (in dollars per share) $ 80.80us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice
/ us-gaap_AwardTypeAxis
= fosl_EmployeeAndNonemployeeStockOptionMember
/ fosl_PriceAxis
= fosl_RangeFourOfExercisePricesMember
Range Of Exercise Prices $69.53 - $106.40 | Stock appreciation rights  
Stock-based compensation plans disclosures  
Stock Appreciation Rights Outstanding, lower range (in dollars per share) $ 69.53fosl_ShareBasedCompensationSharesAuthorizedUnderEquityPlansOtherThanOptionsExercisePriceRangeLowerRangeLimit
/ us-gaap_AwardTypeAxis
= us-gaap_StockAppreciationRightsSARSMember
/ fosl_PriceAxis
= fosl_RangeFourOfExercisePricesMember
Stock Appreciation Rights Outstanding, upper range (in dollars per share) $ 106.40fosl_ShareBasedCompensationSharesAuthorizedUnderEquityPlansOtherThanOptionsExercisePriceRangeUpperRangeLimit
/ us-gaap_AwardTypeAxis
= us-gaap_StockAppreciationRightsSARSMember
/ fosl_PriceAxis
= fosl_RangeFourOfExercisePricesMember
Stock Appreciation Rights Outstanding, Number Of Shares 70,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber
/ us-gaap_AwardTypeAxis
= us-gaap_StockAppreciationRightsSARSMember
/ fosl_PriceAxis
= fosl_RangeFourOfExercisePricesMember
Stock Appreciation Rights Outstanding, Weighted- Average Exercise Price (in dollars per share) $ 93.62fosl_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsOutstandingWeightedAverageExercisePrice
/ us-gaap_AwardTypeAxis
= us-gaap_StockAppreciationRightsSARSMember
/ fosl_PriceAxis
= fosl_RangeFourOfExercisePricesMember
Stock Appreciation Rights Outstanding, Weighted- Average Remaining Contractual Term 5 years 7 months 6 days
Stock Appreciation Rights Exercisable, Number Of Shares 39,000fosl_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsExercisableNumber
/ us-gaap_AwardTypeAxis
= us-gaap_StockAppreciationRightsSARSMember
/ fosl_PriceAxis
= fosl_RangeFourOfExercisePricesMember
Stock Appreciation Rights Exercisable, Weighted- Average Exercise Price (in dollars per share) $ 87.56fosl_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsExercisableWeightedAverageExercisePrice
/ us-gaap_AwardTypeAxis
= us-gaap_StockAppreciationRightsSARSMember
/ fosl_PriceAxis
= fosl_RangeFourOfExercisePricesMember
Range Of Exercise Prices $106.89 - $131.46 | Stock options  
Stock-based compensation plans disclosures  
Stock Options Outstanding, lower range (in dollars per share) $ 106.89us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeLowerRangeLimit
/ us-gaap_AwardTypeAxis
= fosl_EmployeeAndNonemployeeStockOptionMember
/ fosl_PriceAxis
= fosl_RangeFiveOfExercisePricesMember
Stock Options Outstanding, upper range (in dollars per share) $ 131.46us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeUpperRangeLimit
/ us-gaap_AwardTypeAxis
= fosl_EmployeeAndNonemployeeStockOptionMember
/ fosl_PriceAxis
= fosl_RangeFiveOfExercisePricesMember
Stock Options Outstanding, Number Of Shares 167,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
/ us-gaap_AwardTypeAxis
= fosl_EmployeeAndNonemployeeStockOptionMember
/ fosl_PriceAxis
= fosl_RangeFiveOfExercisePricesMember
Stock Options Outstanding, Weighted- Average Exercise Price (in dollars per share) $ 128.10us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice
/ us-gaap_AwardTypeAxis
= fosl_EmployeeAndNonemployeeStockOptionMember
/ fosl_PriceAxis
= fosl_RangeFiveOfExercisePricesMember
Stock Options Outstanding, Weighted- Average Remaining Contractual Term 7 years 1 month 6 days
Stock Options Exercisable, Number Of Shares 114,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber
/ us-gaap_AwardTypeAxis
= fosl_EmployeeAndNonemployeeStockOptionMember
/ fosl_PriceAxis
= fosl_RangeFiveOfExercisePricesMember
Stock Options Exercisable, Weighted- Average Exercise Price (in dollars per share) $ 128.10us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice
/ us-gaap_AwardTypeAxis
= fosl_EmployeeAndNonemployeeStockOptionMember
/ fosl_PriceAxis
= fosl_RangeFiveOfExercisePricesMember
Range Of Exercise Prices $106.89 - $131.46 | Stock appreciation rights  
Stock-based compensation plans disclosures  
Stock Appreciation Rights Outstanding, lower range (in dollars per share) $ 106.89fosl_ShareBasedCompensationSharesAuthorizedUnderEquityPlansOtherThanOptionsExercisePriceRangeLowerRangeLimit
/ us-gaap_AwardTypeAxis
= us-gaap_StockAppreciationRightsSARSMember
/ fosl_PriceAxis
= fosl_RangeFiveOfExercisePricesMember
Stock Appreciation Rights Outstanding, upper range (in dollars per share) $ 131.46fosl_ShareBasedCompensationSharesAuthorizedUnderEquityPlansOtherThanOptionsExercisePriceRangeUpperRangeLimit
/ us-gaap_AwardTypeAxis
= us-gaap_StockAppreciationRightsSARSMember
/ fosl_PriceAxis
= fosl_RangeFiveOfExercisePricesMember
Stock Appreciation Rights Outstanding, Number Of Shares 127,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber
/ us-gaap_AwardTypeAxis
= us-gaap_StockAppreciationRightsSARSMember
/ fosl_PriceAxis
= fosl_RangeFiveOfExercisePricesMember
Stock Appreciation Rights Outstanding, Weighted- Average Exercise Price (in dollars per share) $ 117.46fosl_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsOutstandingWeightedAverageExercisePrice
/ us-gaap_AwardTypeAxis
= us-gaap_StockAppreciationRightsSARSMember
/ fosl_PriceAxis
= fosl_RangeFiveOfExercisePricesMember
Stock Appreciation Rights Outstanding, Weighted- Average Remaining Contractual Term 6 years 6 months
Stock Appreciation Rights Exercisable, Number Of Shares 30,000fosl_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsExercisableNumber
/ us-gaap_AwardTypeAxis
= us-gaap_StockAppreciationRightsSARSMember
/ fosl_PriceAxis
= fosl_RangeFiveOfExercisePricesMember
Stock Appreciation Rights Exercisable, Weighted- Average Exercise Price (in dollars per share) $ 127.16fosl_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsExercisableWeightedAverageExercisePrice
/ us-gaap_AwardTypeAxis
= us-gaap_StockAppreciationRightsSARSMember
/ fosl_PriceAxis
= fosl_RangeFiveOfExercisePricesMember