Debt And Credit Facilities (Summary Of Long-Term Debt) (Details) (USD $)	12 Months Ended
	Jan. 28, 2012	Jan. 29, 2011
Debt Instrument [Line Items]
Total secured debt	$ 888,000,000	$ 569,000,000
Total unsecured debt	2,759,000,000	2,212,000,000
Total long-term debt	3,647,000,000	2,781,000,000
Less: current portion	(506,000,000)	(6,000,000)
Total due beyond one year	3,141,000,000	2,775,000,000
Series 2007-2 Class A Notes, One-Month LIBOR Plus 0.06% Per Year, Due April 2012 [Member]
Debt Instrument [Line Items]
Total secured debt	454,000,000	454,000,000
Interest rate for debt instruments	one-month LIBOR plus 0.06% per year	one-month LIBOR plus 0.06% per year
Maturity date	April 2012	April 2012
Series 2007-2 Class B Notes, One-Month LIBOR Plus 0.18% Per Year, Due April 2012 [Member]
Debt Instrument [Line Items]
Total secured debt	46,000,000	46,000,000
Interest rate for debt instruments	one-month LIBOR plus 0.18% per year	one-month LIBOR plus 0.18% per year
Maturity date	April 2012	April 2012
Series 2011-1 Class A Notes, 2.28%, Due October 2016 [Member]
Debt Instrument [Line Items]
Total secured debt	325,000,000
Debt instrument interest rate	2.28%
Maturity date	October 2016
Mortgage Payable, 7.68%, Due April 2020 [Member]
Debt Instrument [Line Items]
Total secured debt	51,000,000	55,000,000
Debt instrument interest rate	7.68%	7.68%
Maturity date	April 2020	April 2020
Senior Notes, 6.75%, Due June 2014, Net Of Unamortized Discount [Member]
Debt Instrument [Line Items]
Total unsecured debt	399,000,000	399,000,000
Debt instrument interest rate	6.75%	6.75%
Maturity date	June 2014	June 2014
Senior Notes, 6.25%, Due January 2018, Net Of Unamortized Discount [Member]
Debt Instrument [Line Items]
Total unsecured debt	648,000,000	647,000,000
Debt instrument interest rate	6.25%	6.25%
Maturity date	January 2018	January 2018
Senior Notes, 4.75%, Due May 2020, Net Of Unamortized Discount [Member]
Debt Instrument [Line Items]
Total unsecured debt	498,000,000	498,000,000
Debt instrument interest rate	4.75%	4.75%
Maturity date	May 2020	May 2020
Senior Notes, 4.00%, Due October 2021, Net Of Unamortized Discount [Member]
Debt Instrument [Line Items]
Total unsecured debt	499,000,000
Debt instrument interest rate	4.00%
Maturity date	October 2021
Senior Debentures, 6.95%, Due March 2028 [Member]
Debt Instrument [Line Items]
Total unsecured debt	300,000,000	300,000,000
Debt instrument interest rate	6.95%	6.95%
Maturity date	March 2028	March 2028
Senior Notes, 7.00%, Due January 2038, Net Of Unamortized Discount [Member]
Debt Instrument [Line Items]
Total unsecured debt	343,000,000	343,000,000
Debt instrument interest rate	7.00%	7.00%
Maturity date	January 2038	January 2038
Other Debt Securities [Member]
Debt Instrument [Line Items]
Total secured debt	12,000,000	14,000,000
Total unsecured debt	$ 72,000,000	$ 25,000,000