Debt And Credit Facilities (Summary Of Long-Term Debt) (Details) (USD $) In Millions, unless otherwise specified	6 Months Ended		12 Months Ended
	Aug. 03, 2013	Jul. 28, 2012	Feb. 02, 2013
Debt Instrument [Line Items]
Total secured debt	$ 378	$ 385	$ 382
Total unsecured debt	2,744	2,754	2,749
Total long-term debt	3,122	3,139	3,131
Less: current portion	(407)	(6)	(7)
Total due beyond one year	2,715	3,133	3,124
Series 2011-1 Class A Notes, 2.28%, due October 2016 [Member]
Debt Instrument [Line Items]
Total secured debt	325	325	325
Debt instrument interest rate	2.28%	2.28%	2.28%
Maturity date	October 2016	October 2016	October 2016
Mortgage Payable, 7.68%, due April 2020 [Member]
Debt Instrument [Line Items]
Total secured debt	44	49	47
Debt instrument interest rate	7.68%	7.68%	7.68%
Maturity date	April 2020	April 2020	April 2020
Other [Member]
Debt Instrument [Line Items]
Total secured debt	9	11	10
Total unsecured debt	54	66	60
Senior Notes, 6.75%, due June 2014, net of unamortized discount [Member]
Debt Instrument [Line Items]
Total unsecured debt	400	399	400
Debt instrument interest rate	6.75%	6.75%	6.75%
Maturity date	June 2014	June 2014	June 2014
Senior Notes, 6.25%, due January 2018, net of unamortized discount [Member]
Debt Instrument [Line Items]
Total unsecured debt	648	648	648
Debt instrument interest rate	6.25%	6.25%	6.25%
Maturity date	January 2018	January 2018	January 2018
Senior Notes, 4.75%, due May 2020, net of unamortized discount [Member]
Debt Instrument [Line Items]
Total unsecured debt	499	498	498
Debt instrument interest rate	4.75%	4.75%	4.75%
Maturity date	May 2020	May 2020	May 2020
Senior Notes, 4.00%, due October 2021, net of unamortized discount [Member]
Debt Instrument [Line Items]
Total unsecured debt	499	499	499
Debt instrument interest rate	4.00%	4.00%	4.00%
Maturity date	October 2021	October 2021	October 2021
Senior Debentures, 6.95%, due March 2028 [Member]
Debt Instrument [Line Items]
Total unsecured debt	300	300	300
Debt instrument interest rate	6.95%	6.95%	6.95%
Maturity date	March 2028	March 2028	March 2028
Senior Notes, 7.00%, due January 2038, net of unamortized discount [Member]
Debt Instrument [Line Items]
Total unsecured debt	$ 344	$ 344	$ 344
Debt instrument interest rate	7.00%	7.00%	7.00%
Maturity date	January 2038	January 2038	January 2038