Consolidated Statements of Cash Flows (Ohio Edison Company) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
CASH FLOWS FROM OPERATING ACTIVITIES:
NET INCOME	$ 771	$ 869	$ 718
Adjustments to reconcile net income to net cash from operating activities-
Provision for depreciation	1,124	1,066	750
Amortization of regulatory assets, net	307	474	736
Deferred income taxes and investment tax credits, net	647	798	450
Pensions and OPEB mark-to-market adjustment	609	507	190
Accrued compensation and retirement benefits	(55)	69	21
Cash collateral, net	16	(79)	(26)
Pension trust contribution	(600)	(372)	0
Decrease (increase) in operating assets-
Receivables	(13)	147	(177)
Prepayments and other current assets	(12)	101	100
Increase (decrease) in operating liabilities-
Accounts payable	71	35	43
Accrued taxes	6	91	57
Accrued interest	(12)	(12)	7
Other	98	(79)	15
Net cash provided from operating activities	2,320	3,063	3,076
New financing-
Short-term borrowings, net	1,969	0	0
Redemptions and Repayments-
Long-term debt	(940)	(1,909)	(1,015)
Short-term borrowings, net	0	(700)	(378)
Common stock dividend payments	(920)	(881)	(670)
Other	(52)	(38)	(19)
Net cash provided from (used for) financing activities	807	(2,924)	(983)
CASH FLOWS FROM INVESTING ACTIVITIES:
Property additions	(2,678)	(2,129)	(1,780)
Sales of investment securities held in trusts	2,980	4,207	3,172
Purchases of investment securities held in trusts	(3,020)	(4,309)	(3,219)
Cash investments	102	60	66
Other	(41)	51	27
Net cash used for investing activities	(3,157)	(956)	(1,948)
Net change in cash and cash equivalents	(30)	(817)	145
Cash and cash equivalents at beginning of period	202	1,019	874
Cash and cash equivalents at end of period	172	202	1,019
Cash paid (received) during the year-
Interest (net of amounts capitalized)	962	935	662
Income taxes	(6)	(358)	(42)
OE
CASH FLOWS FROM OPERATING ACTIVITIES:
NET INCOME	101	128	155
Adjustments to reconcile net income to net cash from operating activities-
Provision for depreciation	101	93	91
Amortization of regulatory assets, net	77	30	63
Amortization of lease costs	(9)	(9)	(9)
Deferred income taxes and investment tax credits, net	23	77	43
Pensions and OPEB mark-to-market adjustment	84	43	24
Accrued compensation and retirement benefits	(44)	(37)	(45)
Cash collateral, net	(2)	(6)	2
Pension trust contribution	0	(27)	0
Decrease (increase) in operating assets-
Receivables	41	43	27
Prepayments and other current assets	13	(11)	14
Increase (decrease) in operating liabilities-
Accounts payable	75	(5)	(21)
Accrued taxes	12	10	(3)
Other	0	(2)	(14)
Net cash provided from operating activities	472	327	327
New financing-
Short-term borrowings, net	0	0	49
Redemptions and Repayments-
Long-term debt	0	0	(10)
Short-term borrowings, net	0	(142)	0
Common stock dividend payments	(90)	(268)	(250)
Other	(4)	(5)	(2)
Net cash provided from (used for) financing activities	(94)	(415)	(213)
CASH FLOWS FROM INVESTING ACTIVITIES:
Property additions	(226)	(149)	(150)
Leasehold improvement payments from affiliated companies	0	0	18
Sales of investment securities held in trusts	105	154	83
Purchases of investment securities held in trusts	(111)	(161)	(89)
Loans to affiliated companies, net	(126)	(164)	102
Cash investments	31	27	25
Other	(27)	(13)	(7)
Net cash used for investing activities	(354)	(306)	(18)
Net change in cash and cash equivalents	24	(394)	96
Cash and cash equivalents at beginning of period	26	420	324
Cash and cash equivalents at end of period	50	26	420
Cash paid (received) during the year-
Interest (net of amounts capitalized)	82	82	83
Income taxes	$ 27	$ (69)	$ 76