Pension And Postretirement Benefits (Weighted-Average Assumptions To Determine Net Periodic Benefit Costs) (Details) (Pension Plan, Defined Benefit [Member])	12 Months Ended
	Aug. 03, 2014	Jul. 28, 2013	Jul. 29, 2012
Pension Plan, Defined Benefit [Member]
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Discount Rate	4.82%	4.05%	5.41%
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Expected Long-term Return on Assets	7.62%	7.65%	7.90%
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Rate of Compensation Increase	3.30%	3.31%	3.31%