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Intangible Assets
 3 Months Ended
Nov. 28, 2013
Disclosure Text Block [Abstract]  
Intangible Assets
Intangible Assets

As of
 
November 28, 2013
 
August 29, 2013
 
 
Gross
Amount
 
Accumulated
Amortization
 
Gross
Amount
 
Accumulated
Amortization
Product and process technology
 
$
647

 
$
(288
)
 
$
642

 
$
(269
)
Customer relationships
 
127

 
(118
)
 
127

 
(114
)
 
 
$
774

 
$
(406
)
 
$
769

 
$
(383
)


During the first quarters of 2014 and 2013, we capitalized $6 million and $9 million, respectively, for product and process technology with weighted-average useful lives of 9 years. Amortization expense was $23 million and $20 million for the first quarters of 2014 and 2013, respectively.  Annual amortization expense is estimated to be $90 million for 2014, $74 million for 2015, $66 million for 2016, $56 million for 2017 and $45 million for 2018.