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Commitments, Guarantees and Contingencies (Tables) | 6 Months Ended
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Jun. 30, 2017
Commitments and Contingencies Disclosure [Abstract] |
Schedule of Guarantor Obligations |
Potential Collateral Obligations |  | FES |  | AE Supply |  | Regulated |  | FE Corp |  | Total
|  |  | (in millions)
Contractual Obligations for Additional Collateral |  |  |  |  |  |  |  |  |  |
At Current Credit Rating |  | $ | 6 |  |  | $ | 2 |  |  | $ | — |  |  | $ | — |  |  | $ | 8 |
Upon Further Downgrade |  | — |  |  | — |  |  | 43 |  |  | — |  |  | 43 |
Surety Bonds (Collateralized Amount)(1) |  | 65 |  |  | 25 |  |  | 92 |  |  | 187 |  |  | 369 |
Total Exposure from Contractual Obligations |  | $ | 71 |  |  | $ | 27 |  |  | $ | 135 |  |  | $ | 187 |  |  | $ | 420 |
(1) Surety Bonds are not tied to a credit rating. Surety Bonds impact assumes maximum contractual obligations (typical obligations require 30 days to cure). FE is a guarantor for $169 million of FES' surety bonds for the benefit of the PA DEP with respect to LBR and a guarantor for a $12 million FES surety bond for the benefit of the Ohio Environmental Protection Agency relating to the W.H. Sammis generating station.

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- Definition Tabular disclosure of each guarantee obligation, or each group of similar guarantee obligations, including (a) the nature of the guarantee, including its term, how it arose, and the events or circumstances that would require the guarantor to perform under the guarantee; (b) the maximum potential amount of future payments (undiscounted) the guarantor could be required to make under the guarantee; (c) the current carrying amount of the liability, if any, for the guarantor's obligations under the guarantee; and (d) the nature of any recourse provisions under the guarantee, and any assets held either as collateral or by third parties, and any relevant related party disclosure. Excludes disclosures about product warranties. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 460 -SubTopic 10 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=82913245&loc=d3e12265-110248 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 460 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=82913245&loc=d3e12069-110248 + Details
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