Consolidated Balance Sheets (Unaudited) (FirstEnergy Solutions Corp.) (USD $) In Millions, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
CURRENT ASSETS:
Cash and cash equivalents	$ 94	$ 202
Receivables-
Customers, net of allowance for uncollectible accounts	1,635	1,525
Other, net of allowance for uncollectible accounts	263	269
Materials and supplies	921	811
Derivatives	276	235
Prepayments and other	171	122
Total current assets	3,608	3,355
PROPERTY, PLANT AND EQUIPMENT:
In service	41,167	40,122
Less - Accumulated provision for depreciation	12,336	11,839
Property, plant and equipment in service net of accumulated provision for depreciation	28,831	28,283
Construction work in progress	1,937	2,054
Total net property, plant and equipment	30,768	30,337
INVESTMENTS:
Nuclear plant decommissioning trusts	2,153	2,112
Other	1,039	1,008
Total other property and investments	3,518	3,522
DEFERRED CHARGES AND OTHER ASSETS:
Goodwill	6,444	6,441
Other	1,588	1,641
Total deferred charges and other assets	10,154	10,112
Total assets	48,048	47,326
CURRENT LIABILITIES:
Currently payable long-term debt	1,577	1,621
Accounts payable-
Accrued taxes	436	558
Derivatives	222	218
Other	617	900
Total current liabilities	6,082	4,855
Common stockholders' equity-
Common stock	42	42
Accumulated other comprehensive income	389	426
Retained earnings (Accumulated deficit)	3,310	3,047
Total common stockholders' equity	13,497	13,280
Long-term debt and other long-term obligations	15,159	15,716
Total capitalization	28,671	29,015
NONCURRENT LIABILITIES:
Deferred gain on sale and leaseback transaction	909	925
Accumulated deferred income taxes	6,042	5,670
Asset retirement obligations	1,548	1,497
Retirement benefits	2,257	2,823
Other	1,980	2,072
Total noncurrent liabilities	13,295	13,456
COMMITMENTS, GUARANTEES AND CONTINGENCIES (Note 9)
Total liabilities and capitalization	48,048	47,326
FES
CURRENT ASSETS:
Cash and cash equivalents	7	7
Receivables-
Customers, net of allowance for uncollectible accounts	457	424
Affiliated companies	537	600
Other, net of allowance for uncollectible accounts	96	61
Notes receivable from affiliated companies	228	383
Materials and supplies	548	492
Derivatives	265	219
Prepayments and other	19	38
Total current assets	2,157	2,224
PROPERTY, PLANT AND EQUIPMENT:
In service	11,375	10,983
Less - Accumulated provision for depreciation	4,314	4,110
Property, plant and equipment in service net of accumulated provision for depreciation	7,061	6,873
Construction work in progress	919	1,014
Total net property, plant and equipment	7,980	7,887
INVESTMENTS:
Nuclear plant decommissioning trusts	1,250	1,223
Other	7	7
Total other property and investments	1,257	1,230
DEFERRED CHARGES AND OTHER ASSETS:
Customer intangibles	118	123
Goodwill	24	24
Property taxes	43	43
Unamortized sale and leaseback costs	118	80
Derivatives	110	79
Other	137	129
Total deferred charges and other assets	550	478
Total assets	11,944	11,819
CURRENT LIABILITIES:
Currently payable long-term debt	1,144	905
Accounts payable-
Affiliated companies	608	436
Other	306	220
Accrued taxes	62	227
Derivatives	219	189
Other	242	261
Total current liabilities	2,581	2,238
Common stockholders' equity-
Common stock	1,568	1,570
Accumulated other comprehensive income	84	76
Retained earnings (Accumulated deficit)	2,052	1,931
Total common stockholders' equity	3,704	3,577
Long-term debt and other long-term obligations	2,500	2,799
Total capitalization	6,204	6,376
NONCURRENT LIABILITIES:
Deferred gain on sale and leaseback transaction	909	925
Accumulated deferred income taxes	436	286
Asset retirement obligations	934	904
Retirement benefits	179	356
Lease market valuation liability	148	171
Other	553	563
Total noncurrent liabilities	3,159	3,205
COMMITMENTS, GUARANTEES AND CONTINGENCIES (Note 9)
Total liabilities and capitalization	$ 11,944	$ 11,819