Noncontrolling Interests (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Jul. 28, 2013	Jul. 29, 2012	Jul. 31, 2011
Noncontrolling Interest [Line Items]
Payments to Acquire Interest in Joint Venture	$ 5	$ 3
Contribution from noncontrolling interest	3	2	10
China [Member]
Noncontrolling Interest [Line Items]
Controlling interest in a company	60.00%
Malaysia [Member]
Noncontrolling Interest [Line Items]
Controlling interest in a company	70.00%
Noncontrolling Interests [Member]
Noncontrolling Interest [Line Items]
Contribution from noncontrolling interest	$ 3	$ 2