Consolidated Statements of Cash Flows (FirstEnergy Corp.) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
CASH FLOWS FROM OPERATING ACTIVITIES:
NET INCOME	$ 208	$ 196
Adjustments to reconcile net income to net cash from operating activities-
Provision for depreciation	294	293
Amortization of regulatory assets, net	(28)	59
Nuclear fuel amortization	48	53
Deferred purchased power and other costs	(34)	(25)
Deferred income taxes and investment tax credits, net	181	134
Deferred rents and lease market valuation liability	33	37
Retirement benefits	(20)	(64)
Commodity derivative transactions, net (Note 8)	(17)	4
Loss on debt redemptions	7	117
Income from discontinued operations (Note 13)	(86)	(4)
Changes in current assets and liabilities-
Receivables	(168)	(34)
Materials and supplies	12	26
Prepayments and other current assets	(29)	(159)
Accounts payable	200	(378)
Accrued taxes	(242)	(128)
Accrued interest	46	53
Accrued compensation and benefits	(118)	(91)
Cash collateral, net	(461)	(1)
Other	82	(38)
Net cash (used for) provided from operating activities	(92)	50
New Financing-
Long-term debt	1,467	1,800
Short-term borrowings, net	0	181
Redemptions and Repayments-
Long-term debt	(489)	(846)
Short-term borrowings, net	(319)	0
Tender premiums paid on debt redemptions	0	(110)
Common stock dividend payments	(151)	(230)
Other	(10)	(23)
Net cash provided from (used for) financing activities	498	772
CASH FLOWS FROM INVESTING ACTIVITIES:
Property additions	(821)	(826)
Nuclear fuel	(55)	(27)
Proceeds from asset sales	394	0
Sales of investment securities held in trusts	621	539
Purchases of investment securities held in trusts	(646)	(565)
Cash investments	28	6
Asset removal costs	(39)	(53)
Other	3	(1)
Net cash used for investing activities	(515)	(927)
Net change in cash and cash equivalents	(109)	(105)
Cash and cash equivalents at beginning of period	218	172
Cash and cash equivalents at end of period	$ 109	$ 67