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Restructuring and Acquisition-Related Activities (Tables)
12 Months Ended
Dec. 31, 2017
Restructuring and Acquisition-Related Activities [Abstract]  
Schedule of Recognized Identified Assets Acquired and Liabilities Assumed
The Company also recorded intangible assets of $169 million, which are subject to amortization over their estimated useful lives:
 
Estimated Fair Value (dollars in millions)
 
Estimated Useful Life (In Years)
Customer relationships
$
118

 
14
Technology
48

 
7
Trade name
3

 
2
Total intangible assets
$
169

 
 
Restructuring and Related Costs
The following table shows the components of restructuring and acquisition-related activities expense (dollars in millions):
 
Year Ended December 31,
 
2017
 
2016
 
2015
Restructuring activities
$
12

 
$
28

 
$
17

Acquisition-related costs
3

 
7

 

Total restructuring and acquisition-related activities
$
15

 
$
35

 
$
17