XML 70 R58.htm IDEA: XBRL DOCUMENT v3.5.0.2

Derivative Instruments (Details 3) - Not Designated as Hedging Instrument - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Revenue
Effect of derivative instruments on the statements of income and comprehensive income for instruments not designated in hedging relationships
Realized Gain (Loss) Reclassified	$ 60	$ 16	$ 133	$ 52
Purchase Power Expense
Effect of derivative instruments on the statements of income and comprehensive income for instruments not designated in hedging relationships
Realized Gain (Loss) Reclassified	(37)	(25)	(83)	(28)
Other Operating Expense
Effect of derivative instruments on the statements of income and comprehensive income for instruments not designated in hedging relationships
Unrealized Gain (Loss) Recognized	(70)	9	(5)	7
Realized Gain (Loss) Reclassified	(9)	(13)	(22)	(26)
Fuel Expense
Effect of derivative instruments on the statements of income and comprehensive income for instruments not designated in hedging relationships
Realized Gain (Loss) Reclassified		(5)	(7)	(21)
Commodity contracts | Revenue
Effect of derivative instruments on the statements of income and comprehensive income for instruments not designated in hedging relationships
Realized Gain (Loss) Reclassified	59	8	130	7
Commodity contracts | Purchase Power Expense
Effect of derivative instruments on the statements of income and comprehensive income for instruments not designated in hedging relationships
Realized Gain (Loss) Reclassified	(37)	(25)	(83)	(28)
Commodity contracts | Other Operating Expense
Effect of derivative instruments on the statements of income and comprehensive income for instruments not designated in hedging relationships
Unrealized Gain (Loss) Recognized	(79)	11	(17)	22
Realized Gain (Loss) Reclassified	0	0	0	0
Commodity contracts | Fuel Expense
Effect of derivative instruments on the statements of income and comprehensive income for instruments not designated in hedging relationships
Realized Gain (Loss) Reclassified		(5)	(7)	(21)
FTRs | Revenue
Effect of derivative instruments on the statements of income and comprehensive income for instruments not designated in hedging relationships
Realized Gain (Loss) Reclassified	1	8	3	45
FTRs | Purchase Power Expense
Effect of derivative instruments on the statements of income and comprehensive income for instruments not designated in hedging relationships
Realized Gain (Loss) Reclassified	0	0	0	0
FTRs | Other Operating Expense
Effect of derivative instruments on the statements of income and comprehensive income for instruments not designated in hedging relationships
Unrealized Gain (Loss) Recognized	9	(2)	12	(15)
Realized Gain (Loss) Reclassified	(9)	(13)	(22)	(26)
FTRs | Fuel Expense
Effect of derivative instruments on the statements of income and comprehensive income for instruments not designated in hedging relationships
Realized Gain (Loss) Reclassified		0	0	0
FES | Revenue
Effect of derivative instruments on the statements of income and comprehensive income for instruments not designated in hedging relationships
Realized Gain (Loss) Reclassified	60	16	133
FES | Purchase Power Expense
Effect of derivative instruments on the statements of income and comprehensive income for instruments not designated in hedging relationships
Realized Gain (Loss) Reclassified	(37)	(25)	(83)	(28)
FES | Other Operating Expense
Effect of derivative instruments on the statements of income and comprehensive income for instruments not designated in hedging relationships
Unrealized Gain (Loss) Recognized	(70)	9	(5)
Realized Gain (Loss) Reclassified	(9)	(13)	(22)	(26)
FES | Fuel Expense
Effect of derivative instruments on the statements of income and comprehensive income for instruments not designated in hedging relationships
Realized Gain (Loss) Reclassified		(5)	(7)
FES | Commodity contracts | Revenue
Effect of derivative instruments on the statements of income and comprehensive income for instruments not designated in hedging relationships
Realized Gain (Loss) Reclassified	59	8	130	7
FES | Commodity contracts | Purchase Power Expense
Effect of derivative instruments on the statements of income and comprehensive income for instruments not designated in hedging relationships
Realized Gain (Loss) Reclassified	(37)	(25)	(83)	(28)
FES | Commodity contracts | Other Operating Expense
Effect of derivative instruments on the statements of income and comprehensive income for instruments not designated in hedging relationships
Unrealized Gain (Loss) Recognized	(79)	11	(17)	22
Realized Gain (Loss) Reclassified	0	0	0	0
FES | Commodity contracts | Fuel Expense
Effect of derivative instruments on the statements of income and comprehensive income for instruments not designated in hedging relationships
Realized Gain (Loss) Reclassified		(5)	(7)
FES | FTRs | Revenue
Effect of derivative instruments on the statements of income and comprehensive income for instruments not designated in hedging relationships
Realized Gain (Loss) Reclassified	1	8	3	44
FES | FTRs | Purchase Power Expense
Effect of derivative instruments on the statements of income and comprehensive income for instruments not designated in hedging relationships
Realized Gain (Loss) Reclassified	0	0	0	0
FES | FTRs | Other Operating Expense
Effect of derivative instruments on the statements of income and comprehensive income for instruments not designated in hedging relationships
Unrealized Gain (Loss) Recognized	9	(2)	12	(14)
Realized Gain (Loss) Reclassified	$ (9)	(13)	(22)	$ (26)
FES | FTRs | Fuel Expense
Effect of derivative instruments on the statements of income and comprehensive income for instruments not designated in hedging relationships
Realized Gain (Loss) Reclassified		$ 0	$ 0

X

- Definition

Effect of derivative instruments on statements of income and comprehensive income for instruments designated in cash flow hedging relationships and not in hedging relationships.

+ References

No definition available.

+ Details

Name:	fe_EffectOfDerivativeInstrumentsOnStatementsOfIncomeAndComprehensiveIncomeForInstrumentsDesignatedInCashFlowHedgingRelationshipsAndNotInHedgingRelationshipsAbstract
Namespace Prefix:	fe_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Amount of increase (decrease) in the fair value of derivatives recognized in the income statement.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4A
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=64837297&loc=SL5618551-113959

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4C
-Subparagraph (a),(c),(d),(e)
-URI http://asc.fasb.org/extlink&oid=64837297&loc=SL5624171-113959

+ Details

Name:	us-gaap_DerivativeGainLossOnDerivativeNet
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

The net change in the difference between the fair value and the carrying value, or in the comparative fair values, of derivative instruments, including options, swaps, futures, and forward contracts, held at each balance sheet date, that was included in earnings for the period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3602-108585

+ Details

Name:	us-gaap_UnrealizedGainLossOnDerivatives
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Details

Name:	us-gaap_HedgingDesignationAxis=us-gaap_NondesignatedMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_IncomeStatementLocationAxis=fe_RevenueMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_IncomeStatementLocationAxis=fe_PurchasedPowerExpenseMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_IncomeStatementLocationAxis=us-gaap_OtherOperatingIncomeExpenseMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_IncomeStatementLocationAxis=fe_FuelExpenseMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_DerivativeInstrumentRiskAxis=us-gaap_CommodityContractMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_DerivativeInstrumentRiskAxis=fe_FtrsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	dei_LegalEntityAxis=fe_FesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: