Summary of Significant Accounting Policies (Narrative) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
Apr. 28, 2012 stores	Apr. 30, 2011
Accounting Policies [Abstract]
Number of Stores	850
Number of states in which entity operates	45
Net Earnings from Credit Operations	$ 143	$ 100

The number of states the entity operates in as of the balance sheet date.

No definition available.

Name:	us-gaap_NumberOfStatesInWhichEntityOperates
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant