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The Company and its Significant Accounting Policies (Narrative) (Details) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
The Company and its Significant Accounting Policies [Abstract]      
Ownership percentage in Interparfums SA 73.00%us-gaap_MinorityInterestOwnershipPercentageByParent    
Allowances for sales returns and doubtful accounts $ 6.9us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent $ 6.4us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent  
Overhead 3.3us-gaap_CostOfGoodsSoldOverhead 3.6us-gaap_CostOfGoodsSoldOverhead 4.0us-gaap_CostOfGoodsSoldOverhead
Inventory reserves 6.0us-gaap_InventoryValuationReserves 6.8us-gaap_InventoryValuationReserves  
Shipping and handling costs 5.2us-gaap_ShippingHandlingAndTransportationCosts 6.1us-gaap_ShippingHandlingAndTransportationCosts 8.4us-gaap_ShippingHandlingAndTransportationCosts
Advertising costs 86.7us-gaap_AdvertisingExpense 94.0us-gaap_AdvertisingExpense 132.7us-gaap_AdvertisingExpense
Customer incentives cost 24.4us-gaap_MarketingExpense 25.7us-gaap_MarketingExpense 46.5us-gaap_MarketingExpense
Accrued advertising liabilities $ 16.5us-gaap_AccruedAdvertisingCurrent $ 22.4us-gaap_AccruedAdvertisingCurrent  
Weighted average cost of capital 6.70%us-gaap_FairValueInputsDiscountRate    
Equipment and License Agreements [Line Items]      
Royalty expense, percentage of net sales 7.10%ipar_RoyaltyExpenseNetSalesPercentage 7.20%ipar_RoyaltyExpenseNetSalesPercentage 9.00%ipar_RoyaltyExpenseNetSalesPercentage
Minimum [Member]      
Equipment and License Agreements [Line Items]      
Estimated useful life 3 years    
License agreement term 5 years    
License agreement renwal term 1 year    
Royalty expense, percentage of net sales 5.00%ipar_RoyaltyExpenseNetSalesPercentage
/ us-gaap_RangeAxis
= us-gaap_MinimumMember
   
Maximum [Member]      
Equipment and License Agreements [Line Items]      
Estimated useful life 10 years    
License agreement term 15 years    
License agreement renwal term 14 years    
Royalty expense, percentage of net sales 10.00%ipar_RoyaltyExpenseNetSalesPercentage
/ us-gaap_RangeAxis
= us-gaap_MaximumMember