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Goodwill and Intangible Assets
12 Months Ended
Dec. 31, 2017
Goodwill and Intangible Assets Disclosure [Abstract]  
Goodwill and Intangible Assets
Goodwill and Intangible Assets
The following table presents the net carrying amount of goodwill allocated by reporting unit, and changes during 2017:
(In millions)
Balance at December 31, 2016
 
Acquisitions
 
Divestitures
 
Translation
 
Balance at December 31, 2017
Americas
$
91

 
$

 
$

 
$

 
$
91

Europe, Middle East and Africa
383

 
1

 

 
53

 
437

Asia Pacific
61

 
1

 

 
5

 
67

 
$
535

 
$
2

 
$

 
$
58

 
$
595


The following table presents the net carrying amount of goodwill allocated by reporting unit, and changes during 2016:
(In millions)
Balance at December 31, 2015
 
Acquisitions
 
Divestitures
 
Translation
 
Balance at December 31, 2016
Americas
$
91

 
$

 
$

 
$

 
$
91

Europe, Middle East and Africa
401

 

 

 
(18
)
 
383

Asia Pacific
63

 

 

 
(2
)
 
61

 
$
555

 
$

 
$

 
$
(20
)
 
$
535


The following table presents information about intangible assets:
 
2017
 
2016
(In millions)
Gross Carrying Amount(1)
 
Accumulated Amortization(1)
 
Net Carrying Amount
 
Gross Carrying Amount(1)
 
Accumulated Amortization(1)
 
Net Carrying Amount
Intangible assets with indefinite lives
$
124

 
$
(6
)
 
$
118

 
$
128

 
$
(6
)
 
$
122

Trademarks and patents
26

 
(21
)
 
5

 
24

 
(20
)
 
4

Other intangible assets
24

 
(8
)
 
16

 
19

 
(9
)
 
10

 
$
174

 
$
(35
)
 
$
139

 
$
171

 
$
(35
)
 
$
136


(1)
Includes impact of foreign currency translation.
Intangible assets primarily comprise the rights to use the Dunlop brand name and related trademarks and certain other brand names and trademarks.
Amortization expense for intangible assets totaled $1 million in 2017, 2016 and 2015, respectively. We estimate that annual amortization expense related to intangible assets will be approximately $2 million in 2018 through 2022, and the weighted average remaining amortization period is approximately 21 years.
Our annual impairment analyses for 2017, 2016 and 2015 indicated no impairment of goodwill or intangible assets with indefinite lives. In addition, there were no events or circumstances that indicated the impairment tests should be re-performed for goodwill or for intangible assets with indefinite lives for any reporting unit at December 31, 2017.