Long-term Debt (Schedule Of Long-term Debt Instruments) (Details) - USD ($) $ in Millions		Oct. 28, 2017	Jan. 28, 2017	Oct. 29, 2016
Senior Unsecured Debt with Subsidiary Guarantee		$ 5,060	$ 5,055	$ 5,056
Unsecured Debt		725	681	668
Debt, Current		(80)	(36)	(23)
Debt, Long-term and Short-term, Combined Amount		5,785	5,736	5,724
Total Long-term Debt, Net of Current Portion		5,705	5,700	5,701
Fixed Rate 6.875% Notes Due November 2035 [Member]
Senior Unsecured Debt with Subsidiary Guarantee		990	989	989
Fixed Rate 5.625% Notes Due February 2022 [Member]
Senior Unsecured Debt with Subsidiary Guarantee		993	992	992
Fixed Rate 6.625% Notes Due April 2021 [Member]
Senior Unsecured Debt with Subsidiary Guarantee		994	992	992
Fixed Rate 5.625% Notes Due October 2023 [Member]
Senior Unsecured Debt with Subsidiary Guarantee		497	497	497
Fixed Rate 8.50% Notes Due June 2019 [Member]
Senior Unsecured Debt with Subsidiary Guarantee	[1]	496	496	498
Fair Value Interest Rate Hedge Adjustment		1	2	6
Fixed Rate 7.00% Notes Due May 2020 [Member]
Senior Unsecured Debt with Subsidiary Guarantee		398	397	396
Fixed Rate 6.95% Debentures Due March 2033 [Member]
Senior Unsecured Debt		348	348	348
Fixed Rate 7.60% Notes Due July 2037 [Member]
Senior Unsecured Debt		297	297	297
Fixed Rate 6.75% Notes Due July 2036 [Member]
Senior Unsecured Debt with Subsidiary Guarantee		692	692	692
Foreign Facilities [Member]
Other Borrowings		$ 80	$ 36	$ 23

[1] The balances include a fair value interest rate hedge adjustment which increased the debt balance by $1 million as of October 28, 2017, $2 million as of January 28, 2017 and $6 million as of October 29, 2016.