Annual report pursuant to Section 13 and 15(d)

Business and Credit Concentrations - Additional Information (Detail)

v2.4.1.9
Business and Credit Concentrations - Additional Information (Detail) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Concentration Risk [Line Items]      
Credit losses charged to expense $ 11.8us-gaap_AllowanceForDoubtfulAccountsReceivableWriteOffs $ 2.6us-gaap_AllowanceForDoubtfulAccountsReceivableWriteOffs $ 1.5us-gaap_AllowanceForDoubtfulAccountsReceivableWriteOffs
Sales return and allowance expense (recoveries) 2.3us-gaap_AllowanceForDoubtfulAccountsReceivableRecoveries 0.2us-gaap_AllowanceForDoubtfulAccountsReceivableRecoveries (0.4)us-gaap_AllowanceForDoubtfulAccountsReceivableRecoveries
Net assets held outside the United States 548.9us-gaap_ConcentrationRiskNetAssetsAmountGeographicArea 413.2us-gaap_ConcentrationRiskNetAssetsAmountGeographicArea  
Net Sales [Member] | Customer Concentration Risk [Member]      
Concentration Risk [Line Items]      
Number of customers accounting for more than 10% 0skx_NumberOfCustomersGreaterThanTenPercentThreshold
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_SalesRevenueGoodsNetMember
/ us-gaap_ConcentrationRiskByTypeAxis
= us-gaap_CustomerConcentrationRiskMember
0skx_NumberOfCustomersGreaterThanTenPercentThreshold
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_SalesRevenueGoodsNetMember
/ us-gaap_ConcentrationRiskByTypeAxis
= us-gaap_CustomerConcentrationRiskMember
0skx_NumberOfCustomersGreaterThanTenPercentThreshold
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_SalesRevenueGoodsNetMember
/ us-gaap_ConcentrationRiskByTypeAxis
= us-gaap_CustomerConcentrationRiskMember
Number of largest customers 5skx_NumberOfLargestCustomers
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_SalesRevenueGoodsNetMember
/ us-gaap_ConcentrationRiskByTypeAxis
= us-gaap_CustomerConcentrationRiskMember
5skx_NumberOfLargestCustomers
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_SalesRevenueGoodsNetMember
/ us-gaap_ConcentrationRiskByTypeAxis
= us-gaap_CustomerConcentrationRiskMember
5skx_NumberOfLargestCustomers
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_SalesRevenueGoodsNetMember
/ us-gaap_ConcentrationRiskByTypeAxis
= us-gaap_CustomerConcentrationRiskMember
Percentage of net sales to largest customers 15.70%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_SalesRevenueGoodsNetMember
/ us-gaap_ConcentrationRiskByTypeAxis
= us-gaap_CustomerConcentrationRiskMember
18.10%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_SalesRevenueGoodsNetMember
/ us-gaap_ConcentrationRiskByTypeAxis
= us-gaap_CustomerConcentrationRiskMember
18.10%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_SalesRevenueGoodsNetMember
/ us-gaap_ConcentrationRiskByTypeAxis
= us-gaap_CustomerConcentrationRiskMember
Net Trade Receivable [Member] | Credit Concentration Risk [Member]      
Concentration Risk [Line Items]      
Number of customers accounting for more than 10% 0skx_NumberOfCustomersGreaterThanTenPercentThreshold
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_AccountsReceivableMember
/ us-gaap_ConcentrationRiskByTypeAxis
= us-gaap_CreditConcentrationRiskMember
0skx_NumberOfCustomersGreaterThanTenPercentThreshold
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_AccountsReceivableMember
/ us-gaap_ConcentrationRiskByTypeAxis
= us-gaap_CreditConcentrationRiskMember
 
Domestic [Member]      
Concentration Risk [Line Items]      
Accounts receivable 166.9us-gaap_AccountsReceivableGross
/ us-gaap_StatementGeographicalAxis
= country_US
138.4us-gaap_AccountsReceivableGross
/ us-gaap_StatementGeographicalAxis
= country_US
 
Foreign [Member]      
Concentration Risk [Line Items]      
Accounts receivable 126.2us-gaap_AccountsReceivableGross
/ us-gaap_StatementGeographicalAxis
= skx_ForeignCountriesMember
103.5us-gaap_AccountsReceivableGross
/ us-gaap_StatementGeographicalAxis
= skx_ForeignCountriesMember
 
International net sales $ 819.3skx_InternationalNetSales
/ us-gaap_StatementGeographicalAxis
= skx_ForeignCountriesMember
$ 558.1skx_InternationalNetSales
/ us-gaap_StatementGeographicalAxis
= skx_ForeignCountriesMember
$ 496.0skx_InternationalNetSales
/ us-gaap_StatementGeographicalAxis
= skx_ForeignCountriesMember