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Intangible Assets
 12 Months Ended
Dec. 31, 2017
Goodwill and Intangible Assets Disclosure [Abstract]  
INTANGIBLE ASSETS
INTANGIBLE ASSETS

As of December 31, 2017, intangible assets classified in Other Deferred Charges on FirstEnergy’s Consolidated Balance Sheet, include the following:
 
 
Intangible Assets
 
Amortization Expense
 
 
 
 
 
 
 
 
Actual
 
Estimated
(In millions)
 
Gross
 
Accumulated Amortization
 
Net
 
2017
 
2018
 
2019
 
2020
 
2021
 
2022
 
Thereafter
NUG contracts(1)
 
$
124

 
$
36

 
$
88

 
$
5

 
$
5

 
$
5

 
$
5

 
$
5

 
$
5

 
$
63

OVEC
 
8

 
3

 
5

 
1

 
—

 
1

 
—

 
—

 
—

 
4

Coal contracts(2)
 
102

 
94

 
8

 
4

 
3

 
3

 
2

 
—

 
—

 
—

FES customer contracts
 
148

 
144

 
4

 
5

 
3

 
1

 
—

 
—

 
—

 
—

 
 
$
382

 
$
277

 
$
105

 
$
15

 
$
11

 
$
10

 
$
7

 
$
5

 
$
5

 
$
67


(1) 
NUG contracts are subject to regulatory accounting and their amortization does not impact earnings.
(2) 
The coal contracts were recorded with a regulatory offset and their amortization does not impact earnings.