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Goodwill And Acquisition-Related Intangibles, Net
3 Months Ended
Jun. 30, 2017
Goodwill and Intangible Assets Disclosure [Abstract]  
Goodwill And Acquisition-Related Intangibles, Net
(6) GOODWILL AND ACQUISITION-RELATED INTANGIBLES, NET
The changes in the carrying amount of goodwill for the three months ended June 30, 2017 are as follows (in millions):
 
As of
March 31, 2017
 
Activity
 
Effects of Foreign Currency Translation
 
As of
June 30, 2017
Goodwill
$
2,075

 
$

 
$
1

 
$
2,076

Accumulated impairment
(368
)
 

 

 
(368
)
Total
$
1,707

 
$

 
$
1

 
$
1,708


Goodwill represents the excess of the purchase price over the fair value of the underlying acquired net tangible and intangible assets.
Acquisition-related intangibles consisted of the following (in millions):
 
As of June 30, 2017
 
As of March 31, 2017
 
Gross
Carrying
Amount
 
Accumulated
Amortization
 
Acquisition-
Related
Intangibles, Net
 
Gross
Carrying
Amount
 
Accumulated
Amortization
 
Acquisition-
Related
Intangibles, Net
Developed and core technology
$
412

 
$
(412
)
 
$

 
$
412

 
$
(412
)
 
$

Trade names and trademarks
106

 
(99
)
 
7

 
106

 
(98
)
 
8

Registered user base and other intangibles
5

 
(5
)
 

 
5

 
(5
)
 

Carrier contracts and related
85

 
(85
)
 

 
85

 
(85
)
 

Total
$
608

 
$
(601
)
 
$
7

 
$
608

 
$
(600
)
 
$
8


Amortization of intangibles for the three months ended June 30, 2017 and 2016 are classified in the Condensed Consolidated Statement of Operations as follows (in millions):
 
Three months ended
June 30,
 
2017
 
2016
Cost of service and other
$

 
$
8

Cost of product

 
5

Operating expenses
1

 
2

Total
$
1

 
$
15


Acquisition-related intangible assets are amortized using the straight-line method over the lesser of their estimated useful lives or the agreement terms, typically from 2 to 14 years. As of June 30, 2017 and March 31, 2017, the weighted-average remaining useful life for acquisition-related intangible assets was approximately 1.1 years and 1.4 years, respectively.
As of June 30, 2017, future amortization of acquisition-related intangibles that will be recorded in the Condensed Consolidated Statement of Operations is estimated as follows (in millions): 
Fiscal Year Ending March 31,
 
2018 (remaining nine months)
$
5

2019
2

Total
$
7