Consolidated Balance Sheets (Unaudited) (FirstEnergy Solutions Corp.) (USD $) In Millions, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011
CURRENT ASSETS:
Cash and cash equivalents	$ 150	$ 202
Receivables-
Customers, net of allowance for uncollectible accounts	1,604	1,525
Other, net of allowance for uncollectible accounts	227	269
Materials and supplies	875	811
Derivatives	212	235
Prepayments and other	190	122
Total current assets	3,709	3,355
PROPERTY, PLANT AND EQUIPMENT:
In service	41,756	40,122
Less - Accumulated provision for depreciation	12,434	11,839
Property, plant and equipment in service net of accumulated provision for depreciation	29,322	28,283
Construction work in progress	2,119	2,054
Total net property, plant and equipment	31,441	30,337
INVESTMENTS:
Nuclear plant decommissioning trusts	2,203	2,112
Other	1,038	1,008
Total other property and investments	3,451	3,522
DEFERRED CHARGES AND OTHER ASSETS:
Goodwill	6,444	6,441
Other	1,580	1,641
Total deferred charges and other assets	10,137	10,112
Total assets	48,738	47,326
CURRENT LIABILITIES:
Currently payable long-term debt	1,473	1,621
Accounts payable-
Accrued taxes	508	558
Derivatives	155	218
Other	942	900
Total current liabilities	5,920	4,855
Common stockholders' equity-
Common stock	42	42
Accumulated other comprehensive income	367	426
Retained earnings (Accumulated deficit)	3,266	3,047
Total common stockholders' equity	13,433	13,280
Long-term debt and other long-term obligations	15,627	15,716
Total capitalization	29,076	29,015
NONCURRENT LIABILITIES:
Deferred gain on sale and leaseback transaction	900	925
Accumulated deferred income taxes	6,543	5,670
Asset retirement obligations	1,574	1,497
Retirement benefits	2,271	2,823
Other	1,904	2,072
Total noncurrent liabilities	13,742	13,456
COMMITMENTS, GUARANTEES AND CONTINGENCIES (Note 10)
Total liabilities and capitalization	48,738	47,326
FES
CURRENT ASSETS:
Cash and cash equivalents	3	7
Receivables-
Customers, net of allowance for uncollectible accounts	485	424
Affiliated companies	402	600
Other, net of allowance for uncollectible accounts	103	61
Notes receivable from affiliated companies	438	383
Materials and supplies	533	492
Derivatives	209	219
Prepayments and other	137	38
Total current assets	2,310	2,224
PROPERTY, PLANT AND EQUIPMENT:
In service	11,638	10,983
Less - Accumulated provision for depreciation	4,312	4,110
Property, plant and equipment in service net of accumulated provision for depreciation	7,326	6,873
Construction work in progress	1,055	1,014
Total net property, plant and equipment	8,381	7,887
INVESTMENTS:
Nuclear plant decommissioning trusts	1,286	1,223
Other	16	7
Total other property and investments	1,302	1,230
DEFERRED CHARGES AND OTHER ASSETS:
Customer intangibles	114	123
Goodwill	24	24
Property taxes	43	43
Unamortized sale and leaseback costs	111	80
Derivatives	78	79
Other	181	129
Total deferred charges and other assets	551	478
Total assets	12,544	11,819
CURRENT LIABILITIES:
Currently payable long-term debt	1,074	905
Accounts payable-
Affiliated companies	787	436
Other	174	220
Accrued taxes	83	227
Derivatives	153	189
Other	244	261
Total current liabilities	2,515	2,238
Common stockholders' equity-
Common stock	1,571	1,570
Accumulated other comprehensive income	78	76
Retained earnings (Accumulated deficit)	2,153	1,931
Total common stockholders' equity	3,802	3,577
Long-term debt and other long-term obligations	3,085	2,799
Total capitalization	6,887	6,376
NONCURRENT LIABILITIES:
Deferred gain on sale and leaseback transaction	900	925
Accumulated deferred income taxes	501	286
Asset retirement obligations	950	904
Retirement benefits	183	356
Lease market valuation liability	87	171
Other	521	563
Total noncurrent liabilities	3,142	3,205
COMMITMENTS, GUARANTEES AND CONTINGENCIES (Note 10)
Total liabilities and capitalization	$ 12,544	$ 11,819