XML 95 R15.htm IDEA: XBRL DOCUMENT v2.4.1.9
Intangible Assets
 12 Months Ended
Dec. 31, 2014
Goodwill and Intangible Assets Disclosure [Abstract]  
Intangible Assets
INTANGIBLE ASSETS

Indefinite-Lived Intangible Assets
 
Carrying Amount at December 31,
(in millions)
2014
2013
International routes and slots
$
2,287

$
2,287

Delta tradename
850

850

SkyTeam related assets
661

661

Domestic slots
622

622

Total
$
4,420

$
4,420



International Routes and Slots. Our international routes and slots are indefinite-lived intangible assets and primarily relate to Pacific route authorities and slots at Tokyo-Narita International Airport ("Narita"). This intangible asset supports Delta’s Narita hub activities and is essential to Delta's Pacific network.

Domestic Slots. Our domestic slots are indefinite-lived intangible assets and relate to our slots at Washington-Reagan National and New York-LaGuardia airports.

Changes to our operations could result in an impairment charge or a change from indefinite-lived to definite-lived in the period in which the changes occur or are projected to occur.

Definite-Lived Intangible Assets
 
December 31, 2014
 
December 31, 2013
(in millions)
Gross
Carrying
Amount
 
Accumulated
Amortization
 
Gross
Carrying
Amount
 
Accumulated
Amortization
Marketing agreements
$
730

$
(648
)
 
$
730

$
(602
)
Contracts
193

(92
)
 
193

(83
)
Other
53

(53
)
 
53

(53
)
Total
$
976

$
(793
)
 
$
976

$
(738
)


Amortization expense was $55 million for the year ended December 31, 2014, and approximately $70 million for each of the years ended December 31, 2013 and 2012. The following table summarizes the estimated aggregate amortization expense for each of the five succeeding fiscal years:
Years Ending December 31,
(in millions)
 
2015
$
18

2016
18

2017
17

2018
17

2019
16