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Summary of Significant Accounting Policies Summary of Significant Accounting Polices - Revenue Breakdown (Details) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended 12 Months Ended
Jan. 31, 2015
Nov. 01, 2014
Aug. 02, 2014
May 03, 2014
Feb. 01, 2014
Nov. 02, 2013
Aug. 03, 2013
May 04, 2013
Jan. 31, 2015
Feb. 01, 2014
Feb. 02, 2013
Product Information [Line Items]                      
Net sales $ 647,403us-gaap_SalesRevenueNet $ 646,805us-gaap_SalesRevenueNet $ 648,660us-gaap_SalesRevenueNet $ 590,592us-gaap_SalesRevenueNet $ 623,255us-gaap_SalesRevenueNet $ 657,532us-gaap_SalesRevenueNet $ 638,198us-gaap_SalesRevenueNet $ 574,506us-gaap_SalesRevenueNet $ 2,533,460us-gaap_SalesRevenueNet $ 2,493,491us-gaap_SalesRevenueNet $ 2,375,509us-gaap_SalesRevenueNet
Concentration Risk, Percentage                 100.00%us-gaap_ConcentrationRiskPercentage1 100.00%us-gaap_ConcentrationRiskPercentage1 100.00%us-gaap_ConcentrationRiskPercentage1
Apparel [Member]                      
Product Information [Line Items]                      
Net sales                 2,253,994us-gaap_SalesRevenueNet
/ us-gaap_ProductOrServiceAxis
= ann_ApparelMember		 2,244,618us-gaap_SalesRevenueNet
/ us-gaap_ProductOrServiceAxis
= ann_ApparelMember		 2,146,173us-gaap_SalesRevenueNet
/ us-gaap_ProductOrServiceAxis
= ann_ApparelMember
Concentration Risk, Percentage                 89.00%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ProductOrServiceAxis
= ann_ApparelMember		 90.00%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ProductOrServiceAxis
= ann_ApparelMember		 90.00%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ProductOrServiceAxis
= ann_ApparelMember
Accessories [Member]                      
Product Information [Line Items]                      
Net sales                 171,564us-gaap_SalesRevenueNet
/ us-gaap_ProductOrServiceAxis
= ann_AccessoriesMember		 164,897us-gaap_SalesRevenueNet
/ us-gaap_ProductOrServiceAxis
= ann_AccessoriesMember		 157,852us-gaap_SalesRevenueNet
/ us-gaap_ProductOrServiceAxis
= ann_AccessoriesMember
Concentration Risk, Percentage                 7.00%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ProductOrServiceAxis
= ann_AccessoriesMember		 7.00%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ProductOrServiceAxis
= ann_AccessoriesMember		 7.00%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ProductOrServiceAxis
= ann_AccessoriesMember
Shoes [Member]                      
Product Information [Line Items]                      
Net sales                 44,207us-gaap_SalesRevenueNet
/ us-gaap_ProductOrServiceAxis
= ann_ShoesMember		 44,536us-gaap_SalesRevenueNet
/ us-gaap_ProductOrServiceAxis
= ann_ShoesMember		 44,331us-gaap_SalesRevenueNet
/ us-gaap_ProductOrServiceAxis
= ann_ShoesMember
Concentration Risk, Percentage                 2.00%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ProductOrServiceAxis
= ann_ShoesMember		 2.00%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ProductOrServiceAxis
= ann_ShoesMember		 2.00%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ProductOrServiceAxis
= ann_ShoesMember
Other Product and Services [Member]                      
Product Information [Line Items]                      
Net sales                 $ 63,695us-gaap_SalesRevenueNet
/ us-gaap_ProductOrServiceAxis
= ann_OtherProductandServicesMember		 $ 39,440us-gaap_SalesRevenueNet
/ us-gaap_ProductOrServiceAxis
= ann_OtherProductandServicesMember		 $ 27,153us-gaap_SalesRevenueNet
/ us-gaap_ProductOrServiceAxis
= ann_OtherProductandServicesMember
Concentration Risk, Percentage                 2.00%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ProductOrServiceAxis
= ann_OtherProductandServicesMember		 1.00%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ProductOrServiceAxis
= ann_OtherProductandServicesMember		 1.00%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ProductOrServiceAxis
= ann_OtherProductandServicesMember