Business Organization and Summary of Significant Accounting Policies - Inventories (Details) - supplier	12 Months Ended
Jan. 30, 2016	Jan. 31, 2015
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Percentage of purchases made from supplier	23.00%	24.00%
Number of suppliers total purchases made from	1	1

Number of Suppliers with Significant Total Purchases

No definition available.

Name:	chs_NumberofSupplierswithSignificantTotalPurchases
Namespace Prefix:	chs_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration