Shareholders' Equity - Share Repurchase Programs (Details) (USD $) Share data in Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	May 02, 2015	May 03, 2014	Jan. 31, 2015	Mar. 04, 2015
Class of Stock [Line Items]
Stock Repurchased During Period, Value	$ 36,790,000	$ 82,780,000	$ 167,891,000
Common Stock [Member] | 2015 Repurchase Program [Member]
Class of Stock [Line Items]
Stock Repurchase Program, Authorized Amount				200,000,000
Stock Repurchased During Period, Shares	800
Stock Repurchased During Period, Value	$ 35,100,000