Consolidated Statements of Income and Comprehensive Income (Ohio Edison Company) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
REVENUES:
Excise and gross receipts tax collections	$ 455	$ 486	$ 428
Total revenues	9,637	10,400	9,820
OPERATING EXPENSES:
Purchased power	4,237	4,875	4,624
Pensions and OPEB mark-to-market adjustment	609	507	190
Other operating expenses	3,769	3,964	2,714
Provision for depreciation	1,124	1,066	750
Amortization of regulatory assets, net	307	474	736
General taxes	985	978	776
Total operating expenses	13,127	14,449	11,596
OPERATING INCOME (LOSS)	2,176	1,698	1,743
OTHER INCOME (EXPENSE):
Investment income	77	114	117
Interest expense	(1,001)	(1,008)	(845)
Capitalized interest	72	70	165
Total other income (expense)	(852)	(255)	(563)
INCOME BEFORE INCOME TAXES	1,324	1,443	1,180
INCOME TAXES (BENEFITS)	553	574	462
NET INCOME	771	869	718
STATEMENTS OF COMPREHENSIVE INCOME
NET INCOME	771	869	718
OTHER COMPREHENSIVE INCOME (LOSS):
Pension and OPEB prior service costs	(115)	(90)	(220)
Change in unrealized gain on available-for-sale securities	(6)	19	8
Other comprehensive income (loss)	(120)	(48)	(176)
Income taxes (benefits) on other comprehensive income (loss)	(79)	(49)	(74)
Other comprehensive income (loss), net of tax	(41)	1	(102)
COMPREHENSIVE INCOME	730	870	616
OE
REVENUES:
Electric sales	1,512	1,526	1,729
Excise and gross receipts tax collections	103	107	107
Total revenues	1,615	1,633	1,836
OPERATING EXPENSES:
Pensions and OPEB mark-to-market adjustment	84	43	24
Other operating expenses	491	451	342
Provision for depreciation	101	93	91
Amortization of regulatory assets, net	77	30	63
General taxes	193	190	183
Total operating expenses	1,379	1,366	1,541
OPERATING INCOME (LOSS)	236	267	295
OTHER INCOME (EXPENSE):
Investment income	26	25	26
Interest expense	(90)	(88)	(89)
Capitalized interest	3	2	1
Total other income (expense)	(61)	(61)	(62)
INCOME BEFORE INCOME TAXES	175	206	233
INCOME TAXES (BENEFITS)	74	78	78
NET INCOME	101	128	155
STATEMENTS OF COMPREHENSIVE INCOME
NET INCOME	101	128	155
OTHER COMPREHENSIVE INCOME (LOSS):
Pension and OPEB prior service costs	(24)	(43)	(31)
Other comprehensive income (loss)	(24)	(43)	(31)
Income taxes (benefits) on other comprehensive income (loss)	(15)	(15)	(9)
Other comprehensive income (loss), net of tax	(9)	(28)	(22)
COMPREHENSIVE INCOME	92	100	133
OE | Affiliates
OPERATING EXPENSES:
Purchased power	159	287	522
OE | Non-Affiliates
OPERATING EXPENSES:
Purchased power	$ 274	$ 272	$ 316