Income Taxes (Difference Between Income Taxes At Federal Statutory Rate And Provision For Income Taxes) (Details)	12 Months Ended
	Jul. 26, 2014	Jul. 27, 2013	Jul. 28, 2012
Income Tax Disclosure [Abstract]
Federal statutory rate	35.00%	35.00%	35.00%
State taxes, net of federal tax benefit	0.50%	0.80%	0.40%
Foreign income at other than U.S. rates	(16.40%)	(16.40%)	(15.60%)
Tax credits	(0.70%)	(1.60%)	(0.40%)
Domestic manufacturing deduction	(0.90%)	(1.00%)	(1.10%)
Nondeductible compensation	3.30%	1.30%	1.80%
Effective Income Tax Rate Reconciliation, Tax Settlement, Percent	0.00%	(7.10%)	0.00%
Other, net	(1.60%)	0.10%	0.70%
Total	19.20%	11.10%	20.80%