Borrowings (Details Textual) (USD $)	Feb. 01, 2013	Feb. 03, 2012	Feb. 01, 2013 Secured Debt	Feb. 03, 2012 Secured Debt	Feb. 01, 2013 Commercial paper	Feb. 03, 2012 Commercial paper	Nov. 02, 2012 Expires on April 2, 2013	Nov. 02, 2012 Expires on April 15, 2015	Feb. 01, 2013 Senior Notes and Debentures	Feb. 03, 2012 Senior Notes and Debentures
Debt
Carrying Value of Senior Notes and Debentures									$ 6,000,000,000	$ 6,400,000,000
Estimated Fair Value of Senior Notes and Debentures									5,900,000,000	6,900,000,000
Short-term Debt, Weighted Average Interest Rate			1.00%	0.98%	0.38%	0.23%
Short-term Secured Debt and Long-term Secured Debt, Current and Non-Current	1,300,000,000
Long-term structured financing debt	872,000,000	920,000,000
Secured Debt, Current	517,000,000
Commercial paper	1,807,000,000	1,500,000,000
Line of Credit Facility, Maximum Borrowing Capacity	3,000,000,000						1,000,000,000	2,000,000,000
Commercial Paper Program	2,500,000,000
Line of Credit Facility, Amount Outstanding	$ 0