XML 54 R36.htm IDEA: XBRL DOCUMENT v2.4.0.6
Acquistion (Narrative) (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended 6 Months Ended
Jan. 27, 2013
Oct. 28, 2012
Jul. 29, 2012
Jan. 27, 2013
Aug. 06, 2012
Business Acquisition [Line Items]          
Business Acquisition, Cost of Acquired Entity, Purchase Price         $ 1,550
Business Combination, Acquisition Related Costs   10 5 10  
Business Combination, Acquisition Related After Tax Costs   7 3    
Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual 195     366  
Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual 5     2  
Business Acquisition, Purchase Price Allocation, Goodwill Amount         695
Business Acquisition, Purchase Price Allocation, Goodwill, Expected Tax Deductible Amount         281
Purchase Price Allocation Adjustments [Member]
         
Business Acquisition [Line Items]          
Business Acquisition, Cost of Acquired Entity, Purchase Price         $ 20