Derivative Financial Instruments (Description Of Derivative Assets And Liabilities To Fair Value Measurement) (Details) (Fair Value Inputs Level 2 [Member], USD $) In Thousands	Jul. 29, 2011		Jul. 30, 2010
Total Assets		[1]	$ 2	[1]
Total Liabilities	8,764	[1]	707	[1]
Foreign Currency Contracts [Member]
Total Assets		[1]	2	[1]
Total Liabilities	275	[1]		[1]
Treasury Lock Contracts [Member]
Total Liabilities	8,489	[1]		[1]
Interest Rate Swap Contracts [Member]
Total Liabilities		[1]	$ 707	[1]

[1] See Note 1 in Notes to Consolidated Financial Statements in our Form 10-K for more information on fair value measurements.