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Goodwill and Acquired Intangible Assets
9 Months Ended
Sep. 30, 2017
Goodwill and Intangible Assets Disclosure [Abstract]  
Goodwill and Acquired Intangible Assets
Goodwill and Acquired Intangible Assets
The following table identifies the activity relating to goodwill by operating segment:
In millions
Balance,
December 31,
2016
 
Adjustments
 
Currency
Translation
Adjustments
 
Balance,
September 30,
2017
Goodwill
 
 
 
 
 
 
 
Americas Data and Analytics
$
251

 
$
2

 
$

 
$
253

International Data and Analytics
139

 

 
6

 
145

Total goodwill
$
390

 
$
2

 
$
6

 
$
398



During the first nine months of 2017, the Company recorded additional goodwill of $2 million, for an immaterial acquisition that occurred during the period.

Acquired intangible assets were specifically identified when acquired, and are deemed to have finite lives. The gross carrying amount and accumulated amortization for the Company's acquired intangible assets were as follows:
 
 
 
September 30, 2017
 
December 31, 2016
In millions
Amortization
Life (in Years)
 
Gross
Carrying
Amount
 
Accumulated
Amortization
and Currency
Translation
Adjustments
 
Gross
Carrying
Amount
 
Accumulated
Amortization
and Currency
Translation
Adjustments
Acquired intangible assets
 
 
 
 
 
 
 
 
 
Intellectual property/developed technology
3 to 5

 
$
41

 
$
(18
)
 
$
71

 
$
(61
)
Trademarks/trade names
5

 

 

 
1

 
(1
)
In-process research and development
5

 
5

 
(5
)
 
5

 
(4
)
Total acquired intangible assets


 
$
46

 
$
(23
)
 
$
77

 
$
(66
)


During the first nine months of 2017 2017, the Company recorded additional intangibles of $18 million, for intellectual property related to an immaterial acquisition that occurred during the period. The gross carrying amount of acquired intangibles was reduced by certain intangible assets previously acquired that became fully amortized and were removed from the balance sheet.
The aggregate amortization expense (actual and estimated) for acquired intangible assets is as follows:
 
 
Three Months Ended September 30,
 
Nine Months Ended September 30,
In millions
 
2017
 
2016
 
2017
 
2016
Amortization expense
 
$
3

 
$
2

 
$
6

 
$
9

 
 
Actual
 
For the years ended (estimated)
In millions
 
2016
 
2017
 
2018
 
2019
 
2020
 
2021
 
2022
Amortization expense
 
$
10

 
$
8

 
$
7

 
$
5

 
$
4


$
4

 
$
1