Business and Summary of Accounting Policies (Narrative) (Details)	12 Months Ended
	Jan. 28, 2017 USD ($) Store $ / shares shares	Jan. 30, 2016 USD ($)	Jan. 31, 2015
Business And Summary Of Accounting Policies [Line Items]
Number of Stores | Store	1,154
Authorized common stock | shares	800,000,000
Common stock, par value | $ / shares	$ 0.01
Preferred stock, shares authorized | shares	10,000,000
Preferred stock, par value | $ / shares	$ 0.01
Weeks in reporting period	P52W	P52W	P52W
Credit and debit card receivables	$ 81,000,000	$ 92,000,000
Estimated Total Self Insurance Related Liabilities	$ 65,000,000	$ 58,000,000
Deductible as a percent of losses	5.00%
Deductible as a Percent of Losses, Minimum	200.00%
6321 Accident and Health Insurance [Member]
Business And Summary Of Accounting Policies [Line Items]
Value of initial insurance risk retained	$ 500,000
General Liability [Member]
Business And Summary Of Accounting Policies [Line Items]
Value of initial insurance risk retained	250,000
524126 Direct Property and Casualty Insurance Carriers [Member]
Business And Summary Of Accounting Policies [Line Items]
Value of initial insurance risk retained	$ 250,000