Consolidated Balance Sheets (Unaudited) (Parentheticals) - USD ($) $ in Millions	Aug. 01, 2015	May. 02, 2015
Series C Preferred Stock [Member]
Preferred stock, par value (in dollars per share)	$ 1	$ 1
Preferred stock, shares issued (in shares)	150,000	150,000
Treasury stock, shares (in shares)	150,000	150,000
Series D Preferred Stock [Member]
Preferred stock, par value (in dollars per share)	$ 1	$ 1
Preferred stock, shares issued (in shares)	120,000	120,000
Preferred stock, aggregate liquidation preference	$ 6	$ 6
Common Treasury Stock [Member]
Treasury stock, shares (in shares)	4,032,784	4,032,784
Preferred stock, shares authorized (in shares)	1,000,000	1,000,000
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	75,000,000	75,000,000
Common stock, shares issued (in shares)	50,437,859	50,418,019