Components of Long Term Debt (Details) (USD $) In Millions, unless otherwise specified	Feb. 01, 2014	Feb. 02, 2013	Sep. 30, 2012 Senior Notes Due Twenty Twenty Three [Member]	Sep. 30, 2013 Four Point Seven Eight Percent Senior Note Due Twenty Twenty Three [Member] [Domain]	Feb. 01, 2014 Senior Notes	Feb. 02, 2013 Senior Notes	Feb. 01, 2014 Senior Notes Senior Notes Due 2017	Feb. 02, 2013 Senior Notes Senior Notes Due 2017	Feb. 01, 2014 Senior Notes Senior Notes Due 2021	Feb. 02, 2013 Senior Notes Senior Notes Due 2021	Feb. 01, 2014 Senior Notes Senior Notes Due Twenty Twenty Three [Member]	Feb. 02, 2013 Senior Notes Senior Notes Due Twenty Twenty Three [Member]	Feb. 01, 2014 Senior Notes Senior Notes Due 2029	Feb. 02, 2013 Senior Notes Senior Notes Due 2029	Feb. 01, 2014 Senior Notes Senior Notes Due 2033	Feb. 02, 2013 Senior Notes Senior Notes Due 2033	Feb. 01, 2014 Senior Notes Four Point Seven Eight Percent Senior Note Due Twenty Twenty Three [Member] [Domain]	Feb. 02, 2013 Senior Notes Four Point Seven Eight Percent Senior Note Due Twenty Twenty Three [Member] [Domain]	Feb. 01, 2014 Senior Notes Senior Notes Due 2037	Feb. 02, 2013 Senior Notes Senior Notes Due 2037
Debt Instrument [Line Items]
Effective Rate					5.54%		6.31%		4.81%		3.25%		7.36%		6.05%		4.78%		6.89%
Total senior debt					$ 2,800	$ 2,500	$ 650	$ 650	$ 650	$ 650	$ 350	$ 350	$ 200	$ 200	$ 300	$ 300	$ 300	$ 0	$ 350	$ 350
Debt Instrument, Interest Rate, Stated Percentage			3.25%	4.75%			6.25%		4.00%		3.25%		7.25%		6.00%		4.75%		6.88%
Unamortized debt discount	(8)	(8)
Long-term debt	$ 2,792	$ 2,492