MARRIOTT INTERNATIONAL INC /MD/ | 2013 | FY | 3


GOODWILL AND INTANGIBLE ASSETS
The following table details the composition of our other intangible assets at year-end 2013 and 2012:
 
($ in millions)
At Year-End 2013
 
At Year-End 2012
Contract acquisition costs and other
$
1,554

 
$
1,512

Accumulated amortization
(423
)
 
(397
)
 
$
1,131

 
$
1,115



We capitalize both direct and incremental costs that we incur to acquire management, franchise, and license agreements. We amortize these costs on a straight-line basis over the initial term of the agreements, ranging from 15 to 30 years. Our amortization expense totaled $68 million in 2013, $54 million in 2012, and $57 million in 2011. Our estimated aggregate amortization expense for each of the next five fiscal years is as follows: $59 million for 2014; $59 million for 2015; $59 million for 2016; $59 million for 2017; and $59 million for 2018.

The following table details the carrying amount of our goodwill at year-end 2013 and 2012:
 
($ in millions)
At Year-End 2013
 
At Year-End 2012
Goodwill
$
928

 
$
928

Accumulated impairment losses
(54
)
 
(54
)
 
$
874

 
$
874


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