Organization and Summary of Significant Accounting Policies (Narrative) (Details) $ in Millions	12 Months Ended
	Jan. 30, 2016 USD ($)	Jan. 31, 2015 USD ($)
Number of states in which entity operates	45
Maximum number of merchandise vendors providing advertising allowances	1,000
Number of years analyzed for gift card redemption patterns	3
Minimum [Member]
Number of months sales are expected to occur after advertising and direct marketing programs	1
Maximum [Member]
Number of months sales are expected to occur after advertising and direct marketing programs	4
Vendor allowance terms (in years)	1
Buildings and Building Equipment [Member] | Minimum [Member]
Estimated useful life in years, minimum	15 years
Buildings and Building Equipment [Member] | Maximum [Member]
Estimated useful life in years, minimum	50 years
Fixtures and Equipment [Member] | Minimum [Member]
Estimated useful life in years, minimum	3 years
Fixtures and Equipment [Member] | Maximum [Member]
Estimated useful life in years, minimum	15 years
Software and Software Development [Member] | Minimum [Member]
Estimated useful life in years, minimum	2 years
Software and Software Development [Member] | Maximum [Member]
Estimated useful life in years, minimum	5 years
Cash and Cash Equivalents [Member]
Credit card sales transactions settled early	$ 128	$ 111