Document And Entity Information (USD $)	12 Months Ended
	Jan. 31, 2015	Mar. 02, 2015	Aug. 02, 2014
Document And Entity Information [Abstract]
Entity Registrant Name	CHICOS FAS INC
Entity Central Index Key	0000897429
Current Fiscal Year End Date	--01-31
Entity Filer Category	Large Accelerated Filer
Document Type	10-K
Document Period End Date	Jan. 31, 2015
Document Fiscal Year Focus	2014
Document Fiscal Period Focus	FY
Amendment Flag	false
Entity Common Stock, Shares Outstanding		154,159,961
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Public Float			$ 2,360,000,000