Consolidated Balance Sheets - USD ($) $ in Millions	Sep. 30, 2015	Dec. 31, 2014
CURRENT ASSETS
Cash and cash equivalents	$ 271	$ 14
Restricted cash equivalents	18	25
Accounts receivable, less allowance for uncollectible accounts	947	782
Inventories	142	141
Deferred income tax assets, net	70	50
Income taxes and related accrued interest receivable	11	9
Prepaid expenses and other	87	63
Total Current Assets	1,546	1,084
OTHER ASSETS
Goodwill	1,406	1,407
Regulatory assets	2,294	2,409
Income taxes and related accrued interest receivable	81	81
Restricted cash equivalents	15	14
Other	178	166
Total Other Assets	3,974	4,077
PROPERTY, PLANT AND EQUIPMENT
Property, plant and equipment	15,989	15,465
Accumulated depreciation	(4,952)	(4,959)
Net Property, Plant and Equipment	11,037	10,506
TOTAL ASSETS	16,557	15,667
CURRENT LIABILITIES
Short-term debt	1,128	729
Current portion of long-term debt and project funding	300	431
Accounts payable	205	174
Accrued liabilities	300	313
Capital lease obligations due within one year	11	10
Taxes accrued	40	41
Interest accrued	76	47
Liabilities and accrued interest related to uncertain tax positions	6	6
Other	274	314
Total Current Liabilities	2,340	2,065
DEFERRED CREDITS
Regulatory liabilities	348	343
Deferred income tax liabilities, net	3,415	3,266
Investment tax credits	14	16
Pension benefit obligation	443	396
Other postretirement benefit obligations	236	265
Liabilities and accrued interest related to uncertain tax positions	2	2
Other	196	193
Total Deferred Credits	4,654	4,481
OTHER LONG-TERM LIABILITIES
Long-term debt	4,845	4,441
Transition bonds issued by ACE Funding	138	171
Long-term project funding	4	8
Capital lease obligations	45	50
Total Other Long-Term Liabilities	$ 5,032	$ 4,670
COMMITMENTS AND CONTINGENCIES
PREFERRED STOCK
Series A preferred stock, $.01 par value, 18,000 shares authorized, 18,000 and 12,600 shares outstanding, respectively	$ 183	$ 129
EQUITY
Common stock	3	3
Premium on stock and other capital contributions	3,830	3,800
Accumulated other comprehensive loss	(41)	(46)
Retained earnings	556	565
Total Equity	4,348	4,322
TOTAL LIABILITIES AND EQUITY	16,557	15,667
Potomac Electric Power Co [Member]
CURRENT ASSETS
Cash and cash equivalents	10	6
Restricted cash equivalents	2	5
Accounts receivable, less allowance for uncollectible accounts	418	315
Inventories	67	62
Deferred income tax assets, net	6	14
Income taxes and related accrued interest receivable	95	94
Prepaid expenses and other	24	21
Total Current Assets	622	517
OTHER ASSETS
Regulatory assets	695	697
Prepaid pension expense	298	316
Investment in trust	26	34
Income taxes and related accrued interest receivable	30	30
Other	73	71
Total Other Assets	1,122	1,148
PROPERTY, PLANT AND EQUIPMENT
Property, plant and equipment	7,949	7,764
Accumulated depreciation	(2,773)	(2,816)
Net Property, Plant and Equipment	5,176	4,948
TOTAL ASSETS	6,920	6,613
CURRENT LIABILITIES
Short-term debt	48	104
Current portion of long-term debt and project funding		12
Accounts payable	113	94
Accrued liabilities	78	91
Accounts payable due to associated companies	32	30
Capital lease obligations due within one year	11	10
Taxes accrued	28	32
Interest accrued	32	19
Customer deposits	42	44
Other	69	102
Total Current Liabilities	453	538
DEFERRED CREDITS
Regulatory liabilities	97	104
Deferred income tax liabilities, net	1,636	1,584
Investment tax credits	2	2
Other postretirement benefit obligations	52	57
Other	67	67
Total Deferred Credits	1,854	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	6,920	6,613
Delmarva Power & Light Co/De [Member]
CURRENT ASSETS
Cash and cash equivalents	5	4
Restricted cash equivalents		5
Accounts receivable, less allowance for uncollectible accounts	209	193
Inventories	46	55
Deferred income tax assets, net	20	16
Income taxes and related accrued interest receivable	34	34
Prepaid expenses and other	12	12
Total Current Assets	326	319
OTHER ASSETS
Goodwill	8	8
Regulatory assets	359	356
Prepaid pension expense	209	220
Income taxes and related accrued interest receivable	4	4
Other	12	12
Total Other Assets	592	600
PROPERTY, PLANT AND EQUIPMENT
Property, plant and equipment	4,131	3,946
Accumulated depreciation	(1,044)	(1,021)
Net Property, Plant and Equipment	3,087	2,925
TOTAL ASSETS	4,005	3,844
CURRENT LIABILITIES
Short-term debt	171	211
Current portion of long-term debt and project funding		100
Accounts payable	46	39
Accrued liabilities	63	74
Accounts payable due to associated companies	22	17
Taxes accrued	6	3
Interest accrued	16	7
Customer deposits	26	24
Other	32	42
Total Current Liabilities	382	517
DEFERRED CREDITS
Regulatory liabilities	223	225
Deferred income tax liabilities, net	944	893
Investment tax credits	4	4
Other postretirement benefit obligations	19	21
Other	34	35
Total Deferred Credits	1,224	1,178
OTHER LONG-TERM LIABILITIES
Long-term debt	$ 1,171	$ 971
COMMITMENTS AND CONTINGENCIES
EQUITY
Premium on stock and other capital contributions	$ 612	$ 537
Retained earnings	616	641
Total Equity	1,228	1,178
TOTAL LIABILITIES AND EQUITY	4,005	3,844
Atlantic City Electric Co [Member]
CURRENT ASSETS
Cash and cash equivalents	4	2
Restricted cash equivalents	15	10
Accounts receivable, less allowance for uncollectible accounts	235	167
Inventories	26	23
Income taxes and related accrued interest receivable	151	151
Prepaid expenses and other	21	13
Total Current Assets	452	366
OTHER ASSETS
Regulatory assets	340	427
Prepaid pension expense	86	96
Income taxes and related accrued interest receivable	34	34
Restricted cash equivalents	15	14
Other	10	12
Total Other Assets	485	583
PROPERTY, PLANT AND EQUIPMENT
Property, plant and equipment	3,226	3,073
Accumulated depreciation	(758)	(760)
Net Property, Plant and Equipment	2,468	2,313
TOTAL ASSETS	3,405	3,262
CURRENT LIABILITIES
Short-term debt	225	127
Current portion of long-term debt and project funding	48	59
Accounts payable	30	20
Accrued liabilities	125	103
Accounts payable due to associated companies	15	15
Taxes accrued	11	1
Interest accrued	18	13
Customer deposits	24	21
Other	20	22
Total Current Liabilities	516	381
DEFERRED CREDITS
Regulatory liabilities	28	14
Deferred income tax liabilities, net	877	865
Investment tax credits	5	5
Other postretirement benefit obligations	35	36
Liabilities and accrued interest related to uncertain tax positions	2
Other	16	16
Total Deferred Credits	963	936
OTHER LONG-TERM LIABILITIES
Long-term debt	886	888
Transition bonds issued by ACE Funding	138	171
Total Other Long-Term Liabilities	$ 1,024	$ 1,059
COMMITMENTS AND CONTINGENCIES
EQUITY
Common stock	$ 26	$ 26
Premium on stock and other capital contributions	651	651
Retained earnings	225	209
Total Equity	902	886
TOTAL LIABILITIES AND EQUITY	$ 3,405	$ 3,262