Document And Entity Information - shares	6 Months Ended
	Jul. 30, 2016	Aug. 15, 2016
Document And Entity Information [Abstract]
Entity Registrant Name	CHICOS FAS INC
Entity Central Index Key	0000897429
Current Fiscal Year End Date	--01-28
Entity Filer Category	Large Accelerated Filer
Document Type	10-Q
Document Period End Date	Jul. 30, 2016
Document Fiscal Year Focus	2016
Document Fiscal Period Focus	Q2
Amendment Flag	false
Entity Common Stock, Shares Outstanding		132,033,005