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Intangible Assets
 9 Months Ended
May 29, 2014
Goodwill and Intangible Assets Disclosure [Abstract]  
Intangible Assets
Intangible Assets

As of
 
May 29, 2014
 
August 29, 2013
 
 
Gross
Amount
 
Accumulated
Amortization
 
Gross
Amount
 
Accumulated
Amortization
Product and process technology
 
$
670

 
$
(328
)
 
$
642

 
$
(269
)
Customer relationships
 
127

 
(126
)
 
127

 
(114
)
Other
 
16

 
(16
)
 
—

 
—

 
 
$
813

 
$
(470
)
 
$
769

 
$
(383
)


During the first nine months of 2014 and 2013, we capitalized $29 million and $24 million, respectively, for product and process technology with weighted-average useful lives of 10 years.

Amortization expense was $34 million and $88 million for the third quarter and first nine months of 2014, respectively, and $21 million and $62 million for the third quarter and first nine months of 2013, respectively.  Annual amortization expense is estimated to be $108 million for 2014, $77 million for 2015, $65 million for 2016, $55 million for 2017 and $44 million for 2018.