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Intangible Assets (Tables)
 12 Months Ended
Dec. 31, 2018
Goodwill and Intangible Assets Disclosure [Abstract]  
Future Amortization
As of December 31, 2018, intangible assets classified in Other Deferred Charges on FirstEnergy’s Consolidated Balance Sheets include the following:
 
 
Intangible Assets
 
Amortization Expense
 
 
 
 
 
 
 
 
Actual
 
Estimated
(In millions)
 
Gross
 
Accumulated Amortization
 
Net
 
2018
 
2019
 
2020
 
2021
 
2022
 
2023
 
Thereafter
NUG contracts(1)
 
$
124

 
$
41

 
$
83

 
$
5

 
$
5

 
$
5

 
$
5

 
$
5

 
$
5

 
$
58

OVEC
 
8

 
3

 
5

 
—

 
1

 
—

 
—

 
—

 
1

 
3

Coal contracts(2)
 
102

 
97

 
5

 
3

 
3

 
2

 
—

 
—

 
—

 
—

 
 
$
234

 
$
141

 
$
93

 
$
8

 
$
9

 
$
7

 
$
5

 
$
5

 
$
6

 
$
61


(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.