Identifiable Intangible Assets and Goodwill
 9 Months Ended
Feb. 28, 2014
Goodwill and Intangible Assets Disclosure [Abstract]  
Identifiable Intangible Assets and Goodwill
NOTE 3 — Identifiable Intangible Assets and Goodwill
The following table summarizes the Company’s identifiable intangible asset balances as of February 28, 2014 and May 31, 2013:
 
 
As of February 28, 2014
 
As of May 31, 2013
(In millions)
 
Gross Carrying
Amount
 
Accumulated
Amortization
 
Net Carrying
Amount
 
Gross Carrying
Amount
 
Accumulated
Amortization
 
Net Carrying
Amount
Amortized intangible assets:
 
 
 
 
 
 
 
 
 
 
 
 
Patents
 
$
132

 
$
(40
)
 
$
92

 
$
119

 
$
(35
)
 
$
84

Trademarks
 
46

 
(37
)
 
9

 
43

 
(32
)
 
11

Other
 
19

 
(17
)
 
2

 
20

 
(16
)
 
4

TOTAL
 
$
197

 
$
(94
)
 
$
103

 
$
182

 
$
(83
)
 
$
99

Unamortized intangible assets — Trademarks
 
 
 
 
 
283

 
 
 
 
 
283

IDENTIFIABLE INTANGIBLE ASSETS, NET
 
 
 
 
 
$
386

 
 
 
 
 
$
382


Amortization expense, which is included in selling and administrative expense, was $3 million for each of the three month periods ended February 28, 2014 and 2013, respectively, and $11 million and $10 million for the nine month periods ended February 28, 2014 and 2013, respectively. The estimated amortization expense for intangible assets subject to amortization for the remainder of fiscal year 2014 and each of the years ending May 31, 2015 through May 31, 2018 is as follows: remainder of 2014: $3 million; 2015: $11 million; 2016: $10 million; 2017: $9 million; 2018: $8 million.
Goodwill was $131 million at February 28, 2014 and May 31, 2013; $64 million is included in the Converse segment and the remaining amounts are included in Global Brand Divisions for segment reporting purposes. There were no accumulated impairment balances for goodwill as of either period end.