Consolidated Balance Sheets - USD ($) $ in Millions	Jun. 30, 2015	Dec. 31, 2014
CURRENT ASSETS
Cash and cash equivalents	$ 34	$ 14
Restricted cash equivalents	13	25
Accounts receivable, less allowance for uncollectible accounts	956	782
Inventories	150	141
Deferred income tax assets, net	47	50
Income taxes and related accrued interest receivable	12	9
Prepaid expenses and other	79	63
Total Current Assets	1,291	1,084
OTHER ASSETS
Goodwill	1,406	1,407
Regulatory assets	2,310	2,409
Income taxes and related accrued interest receivable	81	81
Restricted cash equivalents	14	14
Other	165	166
Total Other Assets	3,976	4,077
PROPERTY, PLANT AND EQUIPMENT
Property, plant and equipment	15,787	15,465
Accumulated depreciation	(4,922)	(4,959)
Net Property, Plant and Equipment	10,865	10,506
TOTAL ASSETS	16,132	15,667
CURRENT LIABILITIES
Short-term debt	798	729
Current portion of long-term debt and project funding	312	431
Accounts payable	172	174
Accrued liabilities	353	313
Capital lease obligations due within one year	11	10
Taxes accrued	47	41
Interest accrued	50	47
Liabilities and accrued interest related to uncertain tax positions	6	6
Other	284	314
Total Current Liabilities	2,033	2,065
DEFERRED CREDITS
Regulatory liabilities	355	343
Deferred income tax liabilities, net	3,330	3,266
Investment tax credits	15	16
Pension benefit obligation	437	396
Other postretirement benefit obligations	238	265
Liabilities and accrued interest related to uncertain tax positions	2	2
Other	194	193
Total Deferred Credits	4,571	4,481
OTHER LONG-TERM LIABILITIES
Long-term debt	4,848	4,441
Transition bonds issued by ACE Funding	148	171
Long-term project funding	4	8
Capital lease obligations	45	50
Total Other Long-Term Liabilities	$ 5,045	$ 4,670
COMMITMENTS AND CONTINGENCIES
PREFERRED STOCK
Series A preferred stock, $.01 par value, 18,000 shares authorized, 16,200 and 12,600 shares outstanding, respectively	$ 165	$ 129
EQUITY
Common stock	3	3
Premium on stock and other capital contributions	3,823	3,800
Accumulated other comprehensive loss	(42)	(46)
Retained earnings	534	565
Total Equity	4,318	4,322
TOTAL LIABILITIES AND EQUITY	16,132	15,667
Potomac Electric Power Co [Member]
CURRENT ASSETS
Cash and cash equivalents	22	6
Restricted cash equivalents	2	5
Accounts receivable, less allowance for uncollectible accounts	412	315
Inventories	66	62
Deferred income tax assets, net	5	14
Income taxes and related accrued interest receivable	94	94
Prepaid expenses and other	9	21
Total Current Assets	610	517
OTHER ASSETS
Regulatory assets	677	697
Prepaid pension expense	304	316
Investment in trust	34	34
Income taxes and related accrued interest receivable	30	30
Other	75	71
Total Other Assets	1,120	1,148
PROPERTY, PLANT AND EQUIPMENT
Property, plant and equipment	7,848	7,764
Accumulated depreciation	(2,746)	(2,816)
Net Property, Plant and Equipment	5,102	4,948
TOTAL ASSETS	6,832	6,613
CURRENT LIABILITIES
Short-term debt		104
Current portion of long-term debt and project funding		12
Accounts payable	93	94
Accrued liabilities	100	91
Accounts payable due to associated companies	32	30
Capital lease obligations due within one year	11	10
Taxes accrued	31	32
Interest accrued	22	19
Customer deposits	43	44
Other	71	102
Total Current Liabilities	403	538
DEFERRED CREDITS
Regulatory liabilities	105	104
Deferred income tax liabilities, net	1,590	1,584
Investment tax credits	2	2
Other postretirement benefit obligations	53	57
Other	66	67
Total Deferred Credits	1,816	1,814
OTHER LONG-TERM LIABILITIES
Long-term debt	2,332	2,124
Capital lease obligations	45	50
Total Other Long-Term Liabilities	$ 2,377	$ 2,174
COMMITMENTS AND CONTINGENCIES
EQUITY
Premium on stock and other capital contributions	$ 1,122	$ 1,010
Retained earnings	1,114	1,077
Total Equity	2,236	2,087
TOTAL LIABILITIES AND EQUITY	6,832	6,613
Delmarva Power & Light Co/De [Member]
CURRENT ASSETS
Cash and cash equivalents	6	4
Restricted cash equivalents		5
Accounts receivable, less allowance for uncollectible accounts	224	193
Inventories	56	55
Deferred income tax assets, net	21	16
Income taxes and related accrued interest receivable	34	34
Prepaid expenses and other	2	12
Total Current Assets	343	319
OTHER ASSETS
Goodwill	8	8
Regulatory assets	349	356
Prepaid pension expense	213	220
Income taxes and related accrued interest receivable	4	4
Other	13	12
Total Other Assets	587	600
PROPERTY, PLANT AND EQUIPMENT
Property, plant and equipment	4,064	3,946
Accumulated depreciation	(1,032)	(1,021)
Net Property, Plant and Equipment	3,032	2,925
TOTAL ASSETS	3,962	3,844
CURRENT LIABILITIES
Short-term debt	135	211
Current portion of long-term debt and project funding		100
Accounts payable	27	39
Accrued liabilities	79	74
Accounts payable due to associated companies	20	17
Taxes accrued	3	3
Interest accrued	7	7
Customer deposits	25	24
Other	46	42
Total Current Liabilities	342	517
DEFERRED CREDITS
Regulatory liabilities	233	225
Deferred income tax liabilities, net	927	893
Investment tax credits	4	4
Other postretirement benefit obligations	20	21
Other	34	35
Total Deferred Credits	1,218	1,178
OTHER LONG-TERM LIABILITIES
Long-term debt	$ 1,171	$ 971
COMMITMENTS AND CONTINGENCIES
EQUITY
Common stock
Premium on stock and other capital contributions	$ 612	$ 537
Retained earnings	619	641
Total Equity	1,231	1,178
TOTAL LIABILITIES AND EQUITY	3,962	3,844
Atlantic City Electric Co [Member]
CURRENT ASSETS
Cash and cash equivalents	3	2
Restricted cash equivalents	10	10
Accounts receivable, less allowance for uncollectible accounts	215	167
Inventories	26	23
Income taxes and related accrued interest receivable	151	151
Prepaid expenses and other	46	13
Total Current Assets	451	366
OTHER ASSETS
Regulatory assets	373	427
Prepaid pension expense	90	96
Income taxes and related accrued interest receivable	34	34
Restricted cash equivalents	14	14
Other	10	12
Total Other Assets	521	583
PROPERTY, PLANT AND EQUIPMENT
Property, plant and equipment	3,197	3,073
Accumulated depreciation	(779)	(760)
Net Property, Plant and Equipment	2,418	2,313
TOTAL ASSETS	3,390	3,262
CURRENT LIABILITIES
Short-term debt	218	127
Current portion of long-term debt and project funding	60	59
Accounts payable	24	20
Accrued liabilities	136	103
Accounts payable due to associated companies	15	15
Taxes accrued	9	1
Interest accrued	13	13
Customer deposits	22	21
Other	20	22
Total Current Liabilities	517	381
DEFERRED CREDITS
Regulatory liabilities	17	14
Deferred income tax liabilities, net	875	865
Investment tax credits	5	5
Other postretirement benefit obligations	35	36
Other	17	16
Total Deferred Credits	949	936
OTHER LONG-TERM LIABILITIES
Long-term debt	888	888
Transition bonds issued by ACE Funding	148	171
Total Other Long-Term Liabilities	$ 1,036	$ 1,059
COMMITMENTS AND CONTINGENCIES
EQUITY
Common stock	$ 26	$ 26
Premium on stock and other capital contributions	651	651
Retained earnings	211	209
Total Equity	888	886
TOTAL LIABILITIES AND EQUITY	$ 3,390	$ 3,262