Business and Summary of Accounting Policies Property and Equipment (Details) - USD ($) $ in Millions	Jan. 30, 2016	Jan. 31, 2015
Property, Plant and Equipment [Line Items]
Land	$ 1,110	$ 1,103
Store fixtures and equipment	1,804	2,032
Capitalized Computer Software, Gross	1,590	1,368
Construction in progress	167	210
Total property and equipment, at cost	14,518	14,405
Less accumulated depreciation	(6,210)	(5,890)
Property and equipment, net	8,308	8,515
Owned
Property, Plant and Equipment [Line Items]
Buildings and Improvements, Gross	7,999	7,844
Leased
Property, Plant and Equipment [Line Items]
Investment Building and Improvements, Gross	$ 1,848	$ 1,848