Consolidated Balance Sheets (USD $) In Millions, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
CURRENT ASSETS
Cash and cash equivalents	$ 257	$ 23
Restricted cash equivalents	21	13
Accounts receivable, less allowance for uncollectible accounts	812	835
Inventories	152	148
Deferred income tax assets, net	34	51
Income taxes and related accrued interest receivable	7	274
Prepaid expenses and other	86	54
Total Current Assets	1,369	1,398
OTHER ASSETS
Goodwill	1,407	1,407
Regulatory assets	2,032	2,087
Income taxes and related accrued interest receivable	57	75
Restricted cash equivalents	13	14
Other	167	163
Total Other Assets	3,676	3,746
PROPERTY, PLANT AND EQUIPMENT
Property, plant and equipment	15,241	14,567
Accumulated depreciation	(4,988)	(4,863)
Net Property, Plant and Equipment	10,253	9,704
TOTAL ASSETS	15,298	14,848
CURRENT LIABILITIES
Short-term debt	533	565
Current portion of long-term debt and project funding	279	446
Accounts payable	192	215
Accrued liabilities	321	301
Capital lease obligations due within one year	10	9
Taxes accrued	47	56
Interest accrued	80	47
Liabilities and accrued interest related to uncertain tax positions	6	397
Other	341	277
Total Current Liabilities	1,809	2,313
DEFERRED CREDITS
Regulatory liabilities	371	399
Deferred income tax liabilities, net	3,191	2,928
Investment tax credits	16	17
Pension benefit obligation	130	116
Other postretirement benefit obligations	177	206
Liabilities and accrued interest related to uncertain tax positions	6	28
Other	187	189
Total Deferred Credits	4,078	3,883
OTHER LONG-TERM LIABILITIES
Long-term debt	4,691	4,053
Transition bonds issued by ACE Funding	183	214
Long-term project funding	9	10
Capital lease obligations	55	60
Total Other Long-Term Liabilities	4,938	4,337
COMMITMENTS AND CONTINGENCIES
PREFERRED STOCK
Series A preferred stock, $.01 par value, 18,000 shares authorized, 10,800 and zero shares outstanding, respectively	111
EQUITY
Common stock	3	3
Premium on stock and other capital contributions	3,794	3,751
Accumulated other comprehensive loss	(33)	(34)
Retained earnings	598	595
Total Equity	4,362	4,315
TOTAL LIABILITIES AND EQUITY	15,298	14,848
Potomac Electric Power Co [Member]
CURRENT ASSETS
Cash and cash equivalents	72	9
Restricted cash equivalents	3	3
Accounts receivable, less allowance for uncollectible accounts	350	345
Inventories	65	67
Deferred income tax assets, net	23	48
Income taxes and related accrued interest receivable	93	113
Prepaid expenses and other	22	18
Total Current Assets	628	603
OTHER ASSETS
Regulatory assets	639	563
Prepaid pension expense	320	332
Investment in trust	34	33
Income taxes and related accrued interest receivable	28	36
Other	72	66
Total Other Assets	1,093	1,030
PROPERTY, PLANT AND EQUIPMENT
Property, plant and equipment	7,652	7,310
Accumulated depreciation	(2,836)	(2,772)
Net Property, Plant and Equipment	4,816	4,538
TOTAL ASSETS	6,537	6,171
CURRENT LIABILITIES
Short-term debt		151
Current portion of long-term debt and project funding	10	175
Accounts payable	114	132
Accrued liabilities	99	90
Accounts payable due to associated companies	31	32
Capital lease obligations due within one year	10	9
Taxes accrued	25	34
Interest accrued	34	20
Liabilities and accrued interest related to uncertain tax positions		37
Customer deposits	46	46
Other	89	75
Total Current Liabilities	458	801
DEFERRED CREDITS
Regulatory liabilities	110	113
Deferred income tax liabilities, net	1,564	1,412
Investment tax credits	3	3
Other postretirement benefit obligations	58	61
Liabilities and accrued interest related to uncertain tax positions		10
Other	64	65
Total Deferred Credits	1,799	1,664
OTHER LONG-TERM LIABILITIES
Long-term debt	2,124	1,724
Capital lease obligations	55	60
Total Other Long-Term Liabilities	2,179	1,784
COMMITMENTS AND CONTINGENCIES
EQUITY
Common stock
Premium on stock and other capital contributions	1,010	930
Retained earnings	1,091	992
Total Equity	2,101	1,922
TOTAL LIABILITIES AND EQUITY	6,537	6,171
Delmarva Power & Light Co/De [Member]
CURRENT ASSETS
Cash and cash equivalents	178	2
Restricted cash equivalents	5
Accounts receivable, less allowance for uncollectible accounts	165	208
Inventories	60	51
Deferred income tax assets, net	13	59
Income taxes and related accrued interest receivable	32	32
Prepaid expenses and other	10	9
Total Current Assets	463	361
OTHER ASSETS
Goodwill	8	8
Regulatory assets	331	311
Prepaid pension expense	222	228
Income taxes and related accrued interest receivable	4	4
Other	13	12
Total Other Assets	578	563
PROPERTY, PLANT AND EQUIPMENT
Property, plant and equipment	3,882	3,673
Accumulated depreciation	(1,037)	(1,016)
Net Property, Plant and Equipment	2,845	2,657
TOTAL ASSETS	3,886	3,581
CURRENT LIABILITIES
Short-term debt	105	252
Current portion of long-term debt and project funding	200	100
Accounts payable	34	46
Accrued liabilities	73	71
Accounts payable due to associated companies	19	22
Taxes accrued	6	4
Interest accrued	16	6
Customer deposits	26	25
Other	51	35
Total Current Liabilities	530	561
DEFERRED CREDITS
Regulatory liabilities	223	229
Deferred income tax liabilities, net	868	816
Investment tax credits	4	5
Other postretirement benefit obligations	21	23
Other	36	36
Total Deferred Credits	1,152	1,109
OTHER LONG-TERM LIABILITIES
Long-term debt	971	867
COMMITMENTS AND CONTINGENCIES
EQUITY
Common stock
Premium on stock and other capital contributions	537	407
Retained earnings	696	637
Total Equity	1,233	1,044
TOTAL LIABILITIES AND EQUITY	3,886	3,581
Atlantic City Electric Co [Member]
CURRENT ASSETS
Cash and cash equivalents	6	3
Restricted cash equivalents	13	10
Accounts receivable, less allowance for uncollectible accounts	195	186
Inventories	26	28
Income taxes and related accrued interest receivable	147	147
Prepaid expenses and other	27	16
Total Current Assets	414	390
OTHER ASSETS
Regulatory assets	442	569
Prepaid pension expense	99	106
Income taxes and related accrued interest receivable	34	34
Restricted cash equivalents	13	14
Other	11	12
Total Other Assets	599	735
PROPERTY, PLANT AND EQUIPMENT
Property, plant and equipment	3,024	2,901
Accumulated depreciation	(763)	(751)
Net Property, Plant and Equipment	2,261	2,150
TOTAL ASSETS	3,274	3,275
CURRENT LIABILITIES
Short-term debt	99	138
Current portion of long-term debt and project funding	58	148
Accounts payable	25	21
Accrued liabilities	103	105
Accounts payable due to associated companies	13	15
Taxes accrued	12	12
Interest accrued	19	13
Customer deposits	20	22
Other	43	23
Total Current Liabilities	392	497
DEFERRED CREDITS
Regulatory liabilities	18	57
Deferred income tax liabilities, net	856	833
Investment tax credits	5	5
Other postretirement benefit obligations	38	35
Other	14	14
Total Deferred Credits	931	944
OTHER LONG-TERM LIABILITIES
Long-term debt	888	753
Transition bonds issued by ACE Funding	183	214
Total Other Long-Term Liabilities	1,071	967
COMMITMENTS AND CONTINGENCIES
EQUITY
Common stock	26	26
Premium on stock and other capital contributions	651	651
Retained earnings	203	190
Total Equity	880	867
TOTAL LIABILITIES AND EQUITY	$ 3,274	$ 3,275