Fair Value Measurements (Details) (USD $) In Millions, unless otherwise specified	Aug. 03, 2012	Feb. 03, 2012
Fair Value, Assets and Liabilities Measured on Recurring Basis
Derivative instruments Assets	$ 129	$ 140
Total assets	11,656	14,884
Derivative instruments Liabilities	16	17
Total liabilities	16	17
Fair Value, Inputs, Level 1
Fair Value, Assets and Liabilities Measured on Recurring Basis
Derivative instruments Assets	0	0
Total assets	8,424	8,372
Derivative instruments Liabilities	0	0
Total liabilities	0	0
Fair Value, Inputs, Level 2
Fair Value, Assets and Liabilities Measured on Recurring Basis
Derivative instruments Assets	129	140
Total assets	3,232	6,512
Derivative instruments Liabilities	16	17
Total liabilities	16	17
Fair Value, Inputs, Level 3
Fair Value, Assets and Liabilities Measured on Recurring Basis
Derivative instruments Assets	0	0
Total assets	0	0
Derivative instruments Liabilities	0	0
Total liabilities	0	0
Money market funds
Fair Value, Assets and Liabilities Measured on Recurring Basis
Cash equivalents	8,422	8,370
Money market funds | Fair Value, Inputs, Level 1
Fair Value, Assets and Liabilities Measured on Recurring Basis
Cash equivalents	8,422	8,370
Money market funds | Fair Value, Inputs, Level 2
Fair Value, Assets and Liabilities Measured on Recurring Basis
Cash equivalents	0	0
Money market funds | Fair Value, Inputs, Level 3
Fair Value, Assets and Liabilities Measured on Recurring Basis
Cash equivalents	0	0
Commercial paper
Fair Value, Assets and Liabilities Measured on Recurring Basis
Cash equivalents	0	2,011
Commercial paper | Fair Value, Inputs, Level 1
Fair Value, Assets and Liabilities Measured on Recurring Basis
Cash equivalents	0	0
Commercial paper | Fair Value, Inputs, Level 2
Fair Value, Assets and Liabilities Measured on Recurring Basis
Cash equivalents	0	2,011
Commercial paper | Fair Value, Inputs, Level 3
Fair Value, Assets and Liabilities Measured on Recurring Basis
Cash equivalents	0	0
U.S. corporate
Fair Value, Assets and Liabilities Measured on Recurring Basis
Cash equivalents	7	5
Securities	2,076	2,668
U.S. corporate | Fair Value, Inputs, Level 1
Fair Value, Assets and Liabilities Measured on Recurring Basis
Cash equivalents	0	0
Securities	0	0
U.S. corporate | Fair Value, Inputs, Level 2
Fair Value, Assets and Liabilities Measured on Recurring Basis
Cash equivalents	7	5
Securities	2,076	2,668
U.S. corporate | Fair Value, Inputs, Level 3
Fair Value, Assets and Liabilities Measured on Recurring Basis
Cash equivalents	0	0
Securities	0	0
Non- U.S. government and agencies
Fair Value, Assets and Liabilities Measured on Recurring Basis
Securities	141	94
Non- U.S. government and agencies | Fair Value, Inputs, Level 1
Fair Value, Assets and Liabilities Measured on Recurring Basis
Securities	0	0
Non- U.S. government and agencies | Fair Value, Inputs, Level 2
Fair Value, Assets and Liabilities Measured on Recurring Basis
Securities	141	94
Non- U.S. government and agencies | Fair Value, Inputs, Level 3
Fair Value, Assets and Liabilities Measured on Recurring Basis
Securities	0	0
Commercial paper
Fair Value, Assets and Liabilities Measured on Recurring Basis
Securities	13	434
Commercial paper | Fair Value, Inputs, Level 1
Fair Value, Assets and Liabilities Measured on Recurring Basis
Securities	0	0
Commercial paper | Fair Value, Inputs, Level 2
Fair Value, Assets and Liabilities Measured on Recurring Basis
Securities	13	434
Commercial paper | Fair Value, Inputs, Level 3
Fair Value, Assets and Liabilities Measured on Recurring Basis
Securities	0	0
International corporate
Fair Value, Assets and Liabilities Measured on Recurring Basis
Securities	756	1,055
International corporate | Fair Value, Inputs, Level 1
Fair Value, Assets and Liabilities Measured on Recurring Basis
Securities	0	0
International corporate | Fair Value, Inputs, Level 2
Fair Value, Assets and Liabilities Measured on Recurring Basis
Securities	756	1,055
International corporate | Fair Value, Inputs, Level 3
Fair Value, Assets and Liabilities Measured on Recurring Basis
Securities	0	0
Equity and other securities
Fair Value, Assets and Liabilities Measured on Recurring Basis
Securities	112	107
Equity and other securities | Fair Value, Inputs, Level 1
Fair Value, Assets and Liabilities Measured on Recurring Basis
Securities	2	2
Equity and other securities | Fair Value, Inputs, Level 2
Fair Value, Assets and Liabilities Measured on Recurring Basis
Securities	110	105
Equity and other securities | Fair Value, Inputs, Level 3
Fair Value, Assets and Liabilities Measured on Recurring Basis
Securities	$ 0	$ 0