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Intangible Assets
 12 Months Ended
Aug. 29, 2013
Goodwill and Intangible Assets Disclosure [Abstract]  
Intangible Assets
Intangible Assets

As of
 
2013
 
2012
 
 
Gross
Amount
 
Accumulated
Amortization
 
Gross
Amount
 
Accumulated
Amortization
Product and process technology
 
$
642

 
$
(269
)
 
$
575

 
$
(234
)
Customer relationships
 
127

 
(114
)
 
127

 
(98
)
Other
 
—

 
—

 
1

 
—

 
 
$
769

 
$
(383
)
 
$
703

 
$
(332
)


During 2013 and 2012, we capitalized $100 million and $47 million, respectively, for product and process technology with weighted-average useful lives of 7 years and 10 years, respectively. Amortization expense was $83 million, $88 million and $79 million for 2013, 2012 and 2011, respectively.  Annual amortization expense is estimated to be $90 million for 2014, $73 million for 2015, $65 million for 2016, $54 million for 2017 and $44 million for 2018.