Borrowings (Details Textual) (USD $)	12 Months Ended
	Feb. 03, 2012	Jan. 28, 2011
Short-term Debt
Net proceeds from Issued Notes	$ 1,500,000,000
Estimated Fair Value of debt	9,800,000,000
Secured Debt	1,400,000,000
Structured financing debt related to fixed term leases, loans and revolving loans	1,300,000,000	1,000,000,000
Short-term Secured Debt and Long-term Secured Debt, Current	964,000,000
Commercial paper	1,500,000,000	0
Line of Credit Facility, Maximum Borrowing Capacity	3,000,000,000
Commercial Paper Program	2,500,000,000
Line of Credit Facility, Amount Outstanding	0
Secured Debt
Short-term Debt
Short-term Debt, Weighted Average Interest Rate	0.28%	0.29%
Commercial paper
Short-term Debt
Short-term Debt, Weighted Average Interest Rate	0.23%
Expired on June 1, 2011
Short-term Debt
Line of Credit Facility, Maximum Borrowing Capacity	1,000,000,000
Expires on April 2, 2013
Short-term Debt
Line of Credit Facility, Maximum Borrowing Capacity	1,000,000,000
Expires on April 15, 2015
Short-term Debt
Line of Credit Facility, Maximum Borrowing Capacity	$ 2,000,000,000