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Intangible Assets
 3 Months Ended
Nov. 29, 2012
Disclosure Text Block [Abstract]  
Intangible Assets
Intangible Assets

As of
 
November 29, 2012
 
August 30, 2012
 
 
Gross
Amount
 
Accumulated
Amortization
 
Gross
Amount
 
Accumulated
Amortization
Product and process technology
 
$
578

 
$
(244
)
 
$
575

 
$
(234
)
Customer relationships
 
127

 
(102
)
 
127

 
(98
)
Other
 
1

 
(1
)
 
1

 
—

 
 
$
706

 
$
(347
)
 
$
703

 
$
(332
)


During the first quarter of 2013 and 2012, we capitalized $9 million and $9 million, respectively, for product and process technology with weighted-average useful lives of 9 years and 10 years, respectively. Amortization expense was $20 million and $22 million for the first quarters of 2013 and 2012, respectively.  Annual amortization expense is estimated to be $82 million for 2013, $77 million for 2014, $59 million for 2015, $51 million for 2016 and $41 million for 2017.