Consolidated Balance Sheets (FirstEnergy Solutions Corp.) (USD $) In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
CURRENT ASSETS:
Cash and cash equivalents	$ 85	$ 218
Receivables-
Customers, net of allowance for uncollectible accounts of $18 in 2014 and $11 in 2013	1,554	1,720
Other, net of allowance for uncollectible accounts of $3 in 2014 and 2013	225	198
Materials and supplies	817	752
Derivatives	159	166
Collateral	230	155
Prepayments and other	160	212
Total current assets	3,876	4,013
PROPERTY, PLANT AND EQUIPMENT:
In service	47,484	44,228
Less - Accumulated provision for depreciation	14,150	13,280
Property, plant and equipment in service net of accumulated provision for depreciation	33,334	30,948
Construction work in progress	2,449	2,304
Total net property, plant and equipment	35,783	33,252
INVESTMENTS:
Nuclear plant decommissioning trusts	2,341	2,201
Other	881	903
Total other property and investments	3,222	3,104
ASSETS HELD FOR SALE (Note 19)	0	235
DEFERRED CHARGES AND OTHER ASSETS:
Customer intangibles	496
Goodwill	6,418	6,418
Other	1,456	1,548
Total deferred charges and other assets	9,285	9,820
Total assets	52,166	50,424
CURRENT LIABILITIES:
Currently payable long-term debt	804	1,415
Short-term borrowings-
Short-term borrowings	1,799	3,404
Accounts payable-
Accrued taxes	490	485
Derivatives	167	111
Other	693	621
Total current liabilities	5,561	7,637
Common stockholders' equity-
Common stock, without par value, authorized 750 shares- 7 shares outstanding as of December 31, 2014 and 2013	42	42
Accumulated other comprehensive income	246	284
Retained earnings	2,285	2,590
Total common stockholders' equity	12,420	12,692
Long-term debt and other long-term obligations	19,176	15,831
Total capitalization	31,598	28,526
NONCURRENT LIABILITIES:
Deferred gain on sale and leaseback transaction	824	858
Accumulated deferred income taxes	7,057	6,968
Asset retirement obligations	1,387	1,678
Retirement benefits	3,932	2,689
Other	1,590	1,778
Total noncurrent liabilities	15,007	14,261
COMMITMENTS, GUARANTEES AND CONTINGENCIES (Note 15)
Total liabilities and capitalization	52,166	50,424
FES
CURRENT ASSETS:
Cash and cash equivalents	2	2
Receivables-
Customers, net of allowance for uncollectible accounts of $18 in 2014 and $11 in 2013	415	539
Affiliated companies	525	1,036
Other, net of allowance for uncollectible accounts of $3 in 2014 and 2013	107	81
Materials and supplies	492	448
Derivatives	147	165
Collateral	229	136
Prepayments and other	95	109
Total current assets	2,012	2,516
PROPERTY, PLANT AND EQUIPMENT:
In service	13,596	12,472
Less - Accumulated provision for depreciation	5,208	4,755
Property, plant and equipment in service net of accumulated provision for depreciation	8,388	7,717
Construction work in progress	1,010	1,308
Total net property, plant and equipment	9,398	9,025
INVESTMENTS:
Nuclear plant decommissioning trusts	1,365	1,276
Other	10	11
Total other property and investments	1,375	1,287
ASSETS HELD FOR SALE (Note 19)	0	122
DEFERRED CHARGES AND OTHER ASSETS:
Customer intangibles	78	95
Goodwill	23	23
Property taxes	41	41
Unamortized sale and leaseback costs	217	168
Derivatives	52	53
Other	114	172
Total deferred charges and other assets	525	552
Total assets	13,310	13,502
CURRENT LIABILITIES:
Currently payable long-term debt	506	892
Short-term borrowings-
Short-term borrowings	99	4
Accounts payable-
Affiliated companies	416	765
Other	248	290
Accrued taxes	102	66
Derivatives	166	110
Other	184	197
Total current liabilities	1,756	2,755
Common stockholders' equity-
Common stock, without par value, authorized 750 shares- 7 shares outstanding as of December 31, 2014 and 2013	3,594	3,080
Accumulated other comprehensive income	57	54
Retained earnings	1,934	2,178
Total common stockholders' equity	5,585	5,312
Long-term debt and other long-term obligations	2,608	2,130
Total capitalization	8,193	7,442
NONCURRENT LIABILITIES:
Deferred gain on sale and leaseback transaction	824	858
Accumulated deferred income taxes	511	741
Asset retirement obligations	841	1,015
Retirement benefits	324	185
Derivatives	14	14
Other	847	492
Total noncurrent liabilities	3,361	3,305
COMMITMENTS, GUARANTEES AND CONTINGENCIES (Note 15)
Total liabilities and capitalization	13,310	13,502
FES | Affiliates
Short-term borrowings-
Other Short-term Borrowings	$ 35	$ 431