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Equity and Incentive Compensation Plans - Summary of Stock Option Activity (Detail) (USD $)
3 Months Ended
May 02, 2015
May 03, 2014
Share Based Compensation Arrangement by Share-based Payment Award [Line Items]    
Weighted-average fair value of options granted (dollars per share) $ 15.11us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue $ 16.79us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
Stock Options    
Options outstanding at beginning of period (shares) 1,697,223us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber  
Granted (shares) 59,200us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod  
Exercised (shares) (102,941)us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised  
Forfeited or expired (shares) (3,600)us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod  
Options outstanding at end of period (shares) 1,649,882us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber  
Vested and exercisable at end of period (shares) 1,511,080us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber  
Options expected to vest in the future as of end of period (shares) 138,802ann_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpectedToVestOutstandingNumber  
Weighted Average Exercise Price    
Options outstanding at beginning of period (dollars per share) $ 26.17us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice  
Granted (dollars per share) $ 41.31us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice  
Exercised (dollars per share) $ 17.45us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice  
Forfeited or expired (dollars per share) $ 33.84us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice  
Options outstanding at end of period (dollars per share) $ 27.24us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice  
Vested and exercisable at end of period (dollars per share) $ 26.29us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice  
Options expected to vest in the future as of end of period (dollars per share) $ 37.58ann_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpectedToVestOutstandingWeightedAverageExercisePrice