Unaudited Condensed Consolidated Balance Sheets (USD $) In Millions, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Utility Plant
Utility plant in service	$ 31,601	$ 31,065
Accumulated depreciation	(12,151)	(12,001)
Utility plant in service, net	19,450	19,064
Other utility plant, net	272	217
Construction work in progress	2,711	2,449
Nuclear fuel, net of amortization	759	767
Total utility plant, net	23,192	22,497
Current assets
Cash and cash equivalents	73	230
Receivables, net	849	889
Notes receivable from affiliated companies	0	0
Inventory, net	1,427	1,438
Regulatory assets	302	275
Derivative collateral posted	124	147
Deferred tax assets	508	371
Prepayments and other current assets	104	133
Total current assets	3,387	3,483
Deferred debits and other assets
Regulatory assets	2,954	3,025
Nuclear decommissioning trust funds	1,757	1,647
Miscellaneous other property and investments	411	407
Goodwill	3,655	3,655
Other assets and deferred debits	368	345
Total deferred debits and other assets	9,145	9,079
Total assets	35,724	35,059
Common stock equity
Common stock	7,465	7,434
Accumulated other comprehensive loss	(164)	(165)
Retained earnings	2,596	2,752
Total common stock equity	9,897	10,021
Noncontrolling interests	3	4
Total equity	9,900	10,025
Preferred stock of subsidiaries	93	93
Long-term debt, affiliate	273	273
Long-term debt, net	12,739	11,718
Total capitalization	23,005	22,109
Current liabilities
Current portion of long-term debt	925	950
Short-term debt	345	671
Notes payable to affiliated companies	0	0
Accounts payable	907	909
Interest accrued	197	200
Dividends declared	1	78
Customer deposits	342	340
Derivative liabilities	326	436
Accrued compensation and other benefits	168	195
Other current liabilities	359	306
Total current liabilities	3,570	4,085
Deferred credits and other liabilities
Noncurrent income tax liabilities	2,670	2,355
Accumulated deferred investment tax credits	99	103
Regulatory liabilities	2,612	2,700
Asset retirement obligations	1,299	1,265
Accrued pension and other benefits	1,656	1,625
Capital lease obligations	310	200
Derivative liabilities	300	352
Other liabilities and deferred credits	203	265
Total deferred credits and other liabilities	9,149	8,865
Commitments and contingencies (Notes 13 and 14)	0	0
Total capitalization and liabilities	35,724	35,059
PEC
Utility Plant
Utility plant in service	17,857	17,439
Accumulated depreciation	(7,606)	(7,567)
Utility plant in service, net	10,251	9,872
Other utility plant, net	230	181
Construction work in progress	1,403	1,294
Nuclear fuel, net of amortization	513	540
Total utility plant, net	12,397	11,887
Current assets
Cash and cash equivalents	21	20
Receivables, net	459	492
Receivables from affiliated companies	12	13
Notes receivable from affiliated companies	229	0
Inventory, net	774	775
Deferred fuel cost	36	31
Derivative collateral posted	21	24
Deferred tax assets	144	142
Prepayments and other current assets	69	52
Total current assets	1,765	1,549
Deferred debits and other assets
Regulatory assets	1,356	1,310
Nuclear decommissioning trust funds	1,164	1,088
Miscellaneous other property and investments	185	188
Other assets and deferred debits	90	80
Total deferred debits and other assets	2,795	2,666
Total assets	16,957	16,102
Common stock equity
Common stock	2,159	2,148
Accumulated other comprehensive loss	(72)	(71)
Retained earnings	2,780	3,011
Total common stock equity	4,867	5,088
Preferred stock	59	59
Long-term debt, net	4,690	3,693
Total capitalization	9,616	8,840
Current liabilities
Current portion of long-term debt	500	500
Short-term debt	0	188
Notes payable to affiliated companies	0	31
Accounts payable	472	527
Payables to affiliated companies	68	41
Interest accrued	82	77
Customer deposits	120	116
Derivative liabilities	89	130
Accrued compensation and other benefits	99	110
Other current liabilities	156	85
Total current liabilities	1,586	1,805
Deferred credits and other liabilities
Noncurrent income tax liabilities	2,084	1,976
Accumulated deferred investment tax credits	96	98
Regulatory liabilities	1,622	1,543
Asset retirement obligations	921	896
Accrued pension and other benefits	721	687
Capital lease obligations	125	11
Other liabilities and deferred credits	186	246
Total deferred credits and other liabilities	5,755	5,457
Commitments and contingencies (Notes 13 and 14)	0	0
Total capitalization and liabilities	16,957	16,102
PEF
Utility Plant
Utility plant in service	13,579	13,461
Accumulated depreciation	(4,465)	(4,356)
Utility plant in service, net	9,114	9,105
Held for future use	42	36
Construction work in progress	1,308	1,155
Nuclear fuel, net of amortization	246	227
Total utility plant, net	10,710	10,523
Current assets
Cash and cash equivalents	19	16
Receivables, net	372	372
Receivables from affiliated companies	25	19
Inventory, net	654	663
Regulatory assets	266	244
Derivative collateral posted	103	123
Deferred tax assets	231	138
Prepayments and other current assets	20	39
Total current assets	1,690	1,614
Deferred debits and other assets
Regulatory assets	1,481	1,602
Nuclear decommissioning trust funds	593	559
Other assets and deferred debits	183	186
Total deferred debits and other assets	2,257	2,347
Total assets	14,657	14,484
Common stock equity
Common stock	1,762	1,757
Accumulated other comprehensive loss	(27)	(27)
Retained earnings	2,983	2,945
Total common stock equity	4,718	4,675
Preferred stock	34	34
Long-term debt, net	4,057	4,482
Total capitalization	8,809	9,191
Current liabilities
Current portion of long-term debt	425	0
Short-term debt	144	233
Notes payable to affiliated companies	243	8
Accounts payable	398	358
Payables to affiliated companies	39	25
Interest accrued	47	54
Customer deposits	222	224
Derivative liabilities	237	268
Accrued compensation and other benefits	43	53
Other current liabilities	158	112
Total current liabilities	1,956	1,335
Deferred credits and other liabilities
Noncurrent income tax liabilities	1,569	1,405
Regulatory liabilities	905	1,071
Asset retirement obligations	378	369
Accrued pension and other benefits	578	598
Capital lease obligations	185	189
Derivative liabilities	190	231
Other liabilities and deferred credits	87	95
Total deferred credits and other liabilities	3,892	3,958
Commitments and contingencies (Notes 13 and 14)	0	0
Total capitalization and liabilities	$ 14,657	$ 14,484