Consolidated Balance Sheets (Parenthetical) - $ / shares	Jan. 29, 2016	Jan. 30, 2015
Shareholders' equity:
Preferred stock, par value	$ 5	$ 5
Preferred stock, shares issued	0	0
Common stock, par value	$ 0.50	$ 0.50
Common stock, shares issued	910,000,000	960,000,000
Common stock, shares outstanding	910,000,000	960,000,000