Consolidated Statements of Income and Comprehensive Income (Unaudited) (FirstEnergy Solutions Corp.) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
REVENUES:
Electric sales	$ 1,687	$ 1,678	$ 4,844	$ 4,389
Total revenues	2,624	3,041	7,414	7,966
OPERATING EXPENSES:
Fuel	636	632	1,833	1,720
Purchased power	1,312	1,349	3,815	3,755
Other operating expenses	856	993	2,582	3,051
Provision for depreciation	282	297	859	809
General taxes	257	269	761	748
Total operating expenses	3,404	3,662	10,048	10,427
OPERATING INCOME (LOSS)	907	1,057	2,210	1,928
OTHER INCOME (EXPENSE):
Investment income	39	48	63	100
Interest expense	(230)	(267)	(750)	(763)
Capitalized interest	18	17	54	55
Total other income (expense)	(173)	(202)	(633)	(608)
INCOME BEFORE INCOME TAXES	734	855	1,577	1,320
INCOME TAXES (BENEFITS)	309	325	658	550
NET INCOME	425	530	919	770
STATEMENTS OF COMPREHENSIVE INCOME
NET INCOME	425	530	919	770
OTHER COMPREHENSIVE INCOME (LOSS):
Pension and OPEB prior service costs	(47)	(48)	(148)	(44)
Amortized gain (loss) on derivative hedges	0	2	1	13
Change in unrealized gain on available-for-sale securities	1	(26)	13	(7)
Other comprehensive income (loss)	(46)	(72)	(134)	(38)
Income taxes (benefits) on other comprehensive income (loss)	(24)	(26)	(75)	(12)
Other comprehensive income (loss), net of tax	(22)	(46)	(59)	(26)
COMPREHENSIVE INCOME	403	484	860	744
FES
REVENUES:
Other	63	73	180	229
Total revenues	1,557	1,467	4,529	4,151
OPERATING EXPENSES:
Fuel	303	386	978	1,045
Other operating expenses	343	390	1,031	1,268
Provision for depreciation	71	69	203	207
General taxes	35	31	104	91
Impairment of long-lived assets	0	2	0	22
Total operating expenses	1,382	1,261	4,117	3,776
OPERATING INCOME (LOSS)	175	206	412	375
OTHER INCOME (EXPENSE):
Investment income	38	28	50	50
Miscellaneous income	1	9	25	17
Capitalized interest	9	8	27	28
Total other income (expense)	(6)	(8)	(45)	(66)
INCOME BEFORE INCOME TAXES	169	198	367	309
INCOME TAXES (BENEFITS)	68	78	145	115
NET INCOME	101	120	222	194
STATEMENTS OF COMPREHENSIVE INCOME
NET INCOME	101	120	222	194
OTHER COMPREHENSIVE INCOME (LOSS):
Pension and OPEB prior service costs	(5)	(5)	(2)	(14)
Amortized gain (loss) on derivative hedges	(2)	(1)	(6)	4
Change in unrealized gain on available-for-sale securities	(2)	(22)	11	(7)
Other comprehensive income (loss)	(9)	(28)	3	(17)
Income taxes (benefits) on other comprehensive income (loss)	(3)	(11)	1	(7)
Other comprehensive income (loss), net of tax	(6)	(17)	2	(10)
COMPREHENSIVE INCOME	95	103	224	184
FES | Affiliates
REVENUES:
Electric sales	155	143	385	574
OPERATING EXPENSES:
Purchased power	131	55	381	189
OTHER INCOME (EXPENSE):
Interest expense	(3)	(2)	(7)	(5)
FES | Non-Affiliates
REVENUES:
Electric sales	1,339	1,251	3,964	3,348
OPERATING EXPENSES:
Purchased power	499	328	1,420	954
OTHER INCOME (EXPENSE):
Interest expense	$ (51)	$ (51)	$ (140)	$ (156)