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Variable Interest Entities (Tables)
12 Months Ended
Dec. 31, 2017
Variable Interest Entities [Abstract]  
Net exposure to loss based upon the casualty value provisions
The following table discloses FirstEnergy's net exposure to loss based upon the casualty value provisions as of December 31, 2017:
 
Maximum
Exposure
 
Discounted Lease
Payments, net
 
Net
Exposure
 
(In millions)
FirstEnergy(1)
$
1,083

 
$
862

 
$
221



(1) All amounts are associated with FES.