Property and Accumulated Depreciation (Details 1) - USD ($) $ in Millions	Feb. 03, 2017	Jan. 29, 2016
Cost:
Land	$ 7,329	$ 7,086
Buildings and building improvements	18,147	17,451
Equipment	10,978	10,863
Construction in progress	464	513
Total cost	36,918	35,913
Accumulated depreciation	(16,969)	(16,336)
Property, less accumulated depreciation	$ 19,949	$ 19,577