Consolidated Balance Sheets (Parenthetical) - USD ($) shares in Millions, $ in Millions	Oct. 28, 2018	Jan. 28, 2018
Statement of Financial Position [Abstract]
Accumulated depreciation	$ 20,293	$ 19,339
Common Stock, par value	$ 0.05	$ 0.05
Common Stock, shares authorized	10,000	10,000
Common Stock, shares issued	1,782	1,780
Common Stock, shares outstanding	1,131	1,158
Treasury Stock, shares	651	622