Summary of Significant Accounting Policies (Details 4)	12 Months Ended
Jan. 31, 2015
Furniture, fixtures, equipment and technology \| Minimum
Property and Equipment, net
Estimated useful lives	2 years
Furniture, fixtures, equipment and technology \| Maximum
Property and Equipment, net
Estimated useful lives	15 years
Buildings and improvements \| Minimum
Property and Equipment, net
Estimated useful lives	7 years
Buildings and improvements \| Maximum
Property and Equipment, net
Estimated useful lives	40 years

Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

No definition available.

Name:	us-gaap_PropertyPlantAndEquipmentUsefulLife
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration