Document And Entity Information - shares	3 Months Ended
	May 04, 2019	May 28, 2019
Document And Entity Information [Abstract]
Entity Registrant Name	CHICOS FAS INC
Entity Central Index Key	0000897429
Current Fiscal Year End Date	--02-01
Entity Filer Category	Large Accelerated Filer
Document Type	10-Q
Document Period End Date	May 04, 2019
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	Q1
Amendment Flag	false
Entity Emerging Growth Company	false
Entity Small Business	false
Trading Symbol	CHS
Entity Common Stock, Shares Outstanding		117,944,837