Fair Value Measurements (Details) - USD ($) $ in Millions		Aug. 01, 2015	Jan. 31, 2015	Aug. 02, 2014
Financial assets and liabilities measured at fair value on a recurring basis
Other current assets		$ 2,250	$ 2,254	$ 2,166
Other noncurrent assets		989	923	1,064
Other noncurrent liabilities		1,353	1,452	1,495
Fair value measured on recurring basis | Company-owned life insurance investments
Financial assets and liabilities measured at fair value on a recurring basis
Company-owned life insurance investments		783	773	806
Fair value measured on recurring basis | Level 1 | Prepaid forward contracts
Financial assets and liabilities measured at fair value on a recurring basis
Other current assets		36	38	40
Fair value measured on recurring basis | Level 1 | Short-term investments
Financial assets and liabilities measured at fair value on a recurring basis
Cash and cash equivalents		1,985	1,520	3
Fair value measured on recurring basis | Level 2 | Interest rate swaps
Financial assets and liabilities measured at fair value on a recurring basis
Other current assets	[1]	25	0	0
Other noncurrent assets	[1]	16	65	51
Other current liabilities	[1]	16	0	0
Other noncurrent liabilities	[1]	0	24	31
Fair value measured on recurring basis | Level 2 | Company-owned life insurance investments
Financial assets and liabilities measured at fair value on a recurring basis
Other noncurrent assets	[2]	331	322	314
Fair value measured on recurring basis | Level 3 | Beneficial interest asset
Financial assets and liabilities measured at fair value on a recurring basis
Other current assets		29	43	56
Other noncurrent assets		$ 19	$ 31	$ 41

[1] See Note 9 for additional information on interest rate swaps.

[2] The carrying amount and estimated fair value of debt exclude unamortized swap valuation adjustments and capital lease obligations.