Consolidated Statements of Cash Flows (FirstEnergy Solutions Corp.) (USD $) In Millions, unless otherwise specified	9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013
CASH FLOWS FROM OPERATING ACTIVITIES:
NET INCOME (LOSS)	$ 605	$ 250
Adjustments to reconcile net income (loss) to net cash from operating activities-
Income from discontinued operations (Note 14)	(86)	(17)
Provision for depreciation	904	909
Nuclear fuel amortization	160	156
Deferred rents and lease market valuation liability	(56)	(48)
Deferred income taxes and investment tax credits, net	327	114
Investment impairments	10	74
Commodity derivative transactions, net (Note 9)	60	15
Loss on debt redemptions	8	132
Make-whole premiums paid on debt redemptions	0	(181)
Changes in current assets and liabilities-
Receivables	90	(7)
Materials and supplies	(19)	117
Prepayments and other current assets	42	(59)
Accounts payable	(47)	(279)
Accrued taxes	(145)	(146)
Accrued compensation and benefits	(74)	(43)
Cash collateral, net	(71)	(67)
Other	85	21
Net cash provided from operating activities	1,737	1,671
New financing-
Long-term debt	3,778	2,745
Redemptions and Repayments-
Long-term debt	(1,062)	(2,662)
Short-term borrowings, net	(1,783)	0
Tender premiums paid on debt redemptions	0	(110)
Other	(37)	(64)
Net cash provided from financing activities	444	654
CASH FLOWS FROM INVESTING ACTIVITIES:
Property additions	(2,473)	(1,960)
Nuclear fuel	(98)	(159)
Proceeds from asset sales	394	0
Sales of investment securities held in trusts	1,511	1,545
Purchases of investment securities held in trusts	(1,593)	(1,567)
Other	7	3
Net cash used for investing activities	(2,290)	(2,275)
Net change in cash and cash equivalents	(109)	50
Cash and cash equivalents at beginning of period	218	172
Cash and cash equivalents at end of period	109	222
FES
CASH FLOWS FROM OPERATING ACTIVITIES:
NET INCOME (LOSS)	(30)	(29)
Adjustments to reconcile net income (loss) to net cash from operating activities-
Income from discontinued operations (Note 14)	(116)	(14)
Provision for depreciation	236	231
Nuclear fuel amortization	160	156
Deferred rents and lease market valuation liability	(63)	(61)
Deferred income taxes and investment tax credits, net	(15)	205
Investment impairments	9	66
Gain on asset sales	0	(20)
Commodity derivative transactions, net (Note 9)	61	15
Loss on debt redemptions	6	103
Make-whole premiums paid on debt redemptions	0	(31)
Changes in current assets and liabilities-
Receivables	609	(214)
Materials and supplies	(23)	66
Prepayments and other current assets	26	(22)
Accounts payable	(383)	129
Accrued taxes	7	(131)
Accrued compensation and benefits	(15)	(5)
Cash collateral, net	(82)	(35)
Other	41	(20)
Net cash provided from operating activities	428	389
New financing-
Long-term debt	878	0
Equity contribution from parent	500	1,500
Redemptions and Repayments-
Long-term debt	(749)	(1,179)
Short-term borrowings, net	(414)	0
Tender premiums paid on debt redemptions	0	(67)
Other	(14)	(7)
Net cash provided from financing activities	201	247
CASH FLOWS FROM INVESTING ACTIVITIES:
Property additions	(586)	(477)
Nuclear fuel	(98)	(159)
Proceeds from asset sales	307	21
Sales of investment securities held in trusts	890	650
Purchases of investment securities held in trusts	(933)	(694)
Loans to affiliated companies, net	(214)	22
Other	5	0
Net cash used for investing activities	(629)	(637)
Net change in cash and cash equivalents	0	(1)
Cash and cash equivalents at beginning of period	2	3
Cash and cash equivalents at end of period	$ 2	$ 2