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Commitments, Guarantees and Contingencies (Tables)
6 Months Ended
Jun. 30, 2018
Commitments and Contingencies Disclosure [Abstract]  
Schedule of Guarantor Obligations
Potential Collateral Obligations
 
 
AE Supply
 
Utilities and FET
 
FE
 
Total
 
 
(In millions)
Contractual Obligations for Additional Collateral
 
 
 
 
 
 
 
 
 
At Current Credit Rating
 
 
$
1

 
$

 
$

 
$
1

Upon Further Downgrade
 
 

 
56

 

 
56

Surety Bonds (Collateralized Amount)
 
 
1

 
59

 
235

 
295

Total Exposure from Contractual Obligations
 
 
$
2

 
$
115

 
$
235

 
$
352