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Stockholders' Equity (Performance Share Awards) (Details) (Performance Shares [Member])
In Thousands, unless otherwise specified
 12 Months Ended
Jan. 31, 2015
Feb. 01, 2014
Feb. 02, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Period Restricted Stock Units Are Deferred From The Time They Are Earned 1 year    
Restricted stock issued in settlement of performance share awards 303rost_ShareBasedCompensationArrangementsByShareBasedPaymentAwardsRestrictedSharesIssuedInSettlementOfPerformanceShareAwards 240rost_ShareBasedCompensationArrangementsByShareBasedPaymentAwardsRestrictedSharesIssuedInSettlementOfPerformanceShareAwards 280rost_ShareBasedCompensationArrangementsByShareBasedPaymentAwardsRestrictedSharesIssuedInSettlementOfPerformanceShareAwards
Minimum [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Vesting Period 2 years    
Maximum [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Vesting Period 3 years