Annual report pursuant to Section 13 and 15(d)

Acquisitions Business Acquisition (Details)

v2.3.0.15
Acquisitions Business Acquisition (Details) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Sep. 25, 2011
Sep. 26, 2010
Business Acquisition, Purchase Price Allocation [Abstract]    
Weighted-average useful life of intangible assets acquired (in years) 5 11
In-process research and development estimated completion period 3  
Atheros Communications, Inc. [Member]
   
Acquisitions [Abstract]    
Current Assets $ 925  
In-process research and development (IPR&D) 150  
Goodwill 1,777  
Other assets 77  
Total assets 3,785  
Liabilities (316)  
Total 3,469  
Business Acquisition, Purchase Price Allocation [Abstract]    
Number of In-process research and development projects 26  
In-process research and development estimated costs to complete projects 36  
Low range of In-process research and development useful life (in years) 2  
High range of In-process research and development useful life (in years) 6  
Technology-based [Member]
   
Acquisitions [Abstract]    
Amortizable intangible assets 692  
Business Acquisition, Purchase Price Allocation [Abstract]    
Weighted-average useful life of intangible assets acquired (in years) 4  
Marketing-related [Member]
   
Acquisitions [Abstract]    
Amortizable intangible assets 50  
Business Acquisition, Purchase Price Allocation [Abstract]    
Weighted-average useful life of intangible assets acquired (in years) 6  
Customer-related [Member]
   
Acquisitions [Abstract]    
Amortizable intangible assets $ 114  
Business Acquisition, Purchase Price Allocation [Abstract]    
Weighted-average useful life of intangible assets acquired (in years) 3