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Fair Value Measurements (Narrative) (Details) (USD $)
12 Months Ended
Jan. 31, 2015
Feb. 01, 2014
Feb. 02, 2013
Goodwill and Intangible Asset Impairment [Line Items]      
Goodwill and trade name impairment charges $ 30,100,000us-gaap_GoodwillAndIntangibleAssetImpairment $ 72,466,000us-gaap_GoodwillAndIntangibleAssetImpairment $ 0us-gaap_GoodwillAndIntangibleAssetImpairment
Goodwill impairment loss 25,800,000us-gaap_GoodwillImpairmentLoss 67,300,000us-gaap_GoodwillImpairmentLoss  
Pre-tax, non-cash impairment charge for indefinite-lived intangible assets 4,300,000us-gaap_ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill 5,200,000us-gaap_ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill  
Boston Proper [Member]      
Goodwill and Intangible Asset Impairment [Line Items]      
Goodwill impairment loss 25,800,000us-gaap_GoodwillImpairmentLoss
/ dei_LegalEntityAxis
= chs_SubsidiariesBostonProperMember
67,266,000us-gaap_GoodwillImpairmentLoss
/ dei_LegalEntityAxis
= chs_SubsidiariesBostonProperMember
0us-gaap_GoodwillImpairmentLoss
/ dei_LegalEntityAxis
= chs_SubsidiariesBostonProperMember
Boston Proper trade name [Member]      
Goodwill and Intangible Asset Impairment [Line Items]      
Pre-tax, non-cash impairment charge for indefinite-lived intangible assets $ 4,300,000us-gaap_ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill
/ dei_LegalEntityAxis
= chs_BostonProperTradeNameMember
$ 5,200,000us-gaap_ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill
/ dei_LegalEntityAxis
= chs_BostonProperTradeNameMember