Consolidated Balance Sheets (USD $) In Millions	Sep. 30, 2011		Dec. 31, 2010
CURRENT ASSETS
Cash and cash equivalents	$ 103		$ 20
Restricted cash equivalents	17		11
Accounts receivable, less allowance for uncollectible accounts	989		1,027
Inventories	146		126
Derivative assets	15		45
Prepayments of income taxes	147		276
Deferred income tax assets, net	69		90
Prepaid expenses and other	131		51
Conectiv Energy assets held for sale	1		111
Total Current Assets	1,618		1,757
INVESTMENTS AND OTHER ASSETS
Goodwill	1,407		1,407
Regulatory assets	1,915		1,915
Investment in finance leases held in trust	1,336	[1]	1,423	[1]
Income taxes receivable	85		114
Restricted cash equivalents	11		5
Assets and accrued interest related to uncertain tax positions	8		11
Other	169		169
Conectiv Energy assets held for sale	1		6
Total Investments and Other Assets	4,932		5,050
PROPERTY, PLANT AND EQUIPMENT
Property, plant and equipment	12,633		12,120
Accumulated depreciation	(4,613)		(4,447)
Net Property, Plant and Equipment	8,020		7,673
TOTAL ASSETS	14,570		14,480
CURRENT LIABILITIES
Short-term debt	545		534
Current portion of long-term debt and project funding	113		75
Accounts payable and accrued liabilities	534		587
Capital lease obligations due within one year	8		8
Taxes accrued	112		96
Interest accrued	80		45
Liabilities and accrued interest related to uncertain tax positions	3		3
Derivative liabilities	33		66
Other	255		321
Liabilities associated with Conectiv Energy assets held for sale			62
Total Current Liabilities	1,683		1,797
DEFERRED CREDITS
Regulatory liabilities	530		528
Deferred income taxes, net	2,891		2,714
Investment tax credits	23		26
Pension benefit obligation	239		332
Other postretirement benefit obligations	413		429
Income taxes payable			2
Liabilities and accrued interest related to uncertain tax positions	49		148
Derivative liabilities	8		21
Other	181		175
Liabilities associated with Conectiv Energy assets held for sale			10
Total Deferred Credits	4,334		4,385
LONG-TERM LIABILITIES
Long-term debt	3,794		3,629
Transition bonds issued by ACE Funding	306		332
Long-term project funding	14		15
Capital lease obligations	82		86
Total Long-Term Liabilities	4,196		4,062
COMMITMENTS AND CONTINGENCIES
EQUITY
Common stock	2		2
Premium on stock and other capital contributions	3,312		3,275
Accumulated other comprehensive loss	(71)		(106)
Retained earnings	1,114		1,059
Total Shareholders' Equity	4,357		4,230
Non-controlling interest			6
Total Equity	4,357		4,236
TOTAL LIABILITIES AND EQUITY	14,570		14,480
Potomac Electric Power Co [Member]
CURRENT ASSETS
Cash and cash equivalents	70		88
Accounts receivable, less allowance for uncollectible accounts	375		373
Inventories	54		44
Prepayments of income taxes	30		95
Income taxes receivable	31		37
Prepaid expenses and other	38		34
Total Current Assets	598		671
INVESTMENTS AND OTHER ASSETS
Regulatory assets	259		191
Prepaid pension expense	296		274
Investment in trust	31		25
Income taxes receivable	24		34
Other	55		57
Total Investments and Other Assets	665		581
PROPERTY, PLANT AND EQUIPMENT
Property, plant and equipment	6,475		6,185
Accumulated depreciation	(2,697)		(2,609)
Net Property, Plant and Equipment	3,778		3,576
TOTAL ASSETS	5,041		4,828
CURRENT LIABILITIES
Accounts payable and accrued liabilities	196		194
Accounts payable due to associated companies	69		75
Capital lease obligations due within one year	8		8
Taxes accrued	73		62
Interest accrued	36		18
Other	108		119
Total Current Liabilities	490		476
DEFERRED CREDITS
Regulatory liabilities	169		147
Deferred income taxes, net	1,033		958
Investment tax credits	5		7
Other postretirement benefit obligations	70		67
Income taxes payable			3
Liabilities and accrued interest related to uncertain tax positions	71		52
Other	65		64
Total Deferred Credits	1,413		1,298
LONG-TERM LIABILITIES
Long-term debt	1,540		1,540
Capital lease obligations	82		86
Total Long-Term Liabilities	1,622		1,626
COMMITMENTS AND CONTINGENCIES
EQUITY
Premium on stock and other capital contributions	705		705
Retained earnings	811		723
Total Equity	1,516		1,428
TOTAL LIABILITIES AND EQUITY	5,041		4,828
Delmarva Power & Light Co/De [Member]
CURRENT ASSETS
Cash and cash equivalents	12		69
Accounts receivable, less allowance for uncollectible accounts	172		212
Inventories	46		41
Prepayments of income taxes	53		62
Prepaid expenses and other	31		22
Total Current Assets	314		406
INVESTMENTS AND OTHER ASSETS
Goodwill	8		8
Regulatory assets	232		242
Prepaid pension expense	166		139
Other	23		21
Total Investments and Other Assets	429		410
PROPERTY, PLANT AND EQUIPMENT
Property, plant and equipment	3,119		3,000
Accumulated depreciation	(925)		(901)
Net Property, Plant and Equipment	2,194		2,099
TOTAL ASSETS	2,937		2,915
CURRENT LIABILITIES
Short-term debt	105		105
Current portion of long-term debt and project funding	66		35
Accounts payable and accrued liabilities	92		98
Accounts payable due to associated companies	20		34
Taxes accrued	7		6
Interest accrued	12		7
Derivative liabilities	13		15
Other	55		73
Total Current Liabilities	370		373
DEFERRED CREDITS
Regulatory liabilities	294		310
Deferred income taxes, net	641		561
Investment tax credits	6		7
Other postretirement benefit obligations	25		22
Liabilities and accrued interest related to uncertain tax positions	14		24
Derivative liabilities	5		8
Other	36		39
Total Deferred Credits	1,021		971
LONG-TERM LIABILITIES
Long-term debt	699		730
COMMITMENTS AND CONTINGENCIES
EQUITY
Premium on stock and other capital contributions	347		347
Retained earnings	500		494
Total Equity	847		841
TOTAL LIABILITIES AND EQUITY	2,937		2,915
Atlantic City Electric Co [Member]
CURRENT ASSETS
Cash and cash equivalents	91		4
Restricted cash equivalents	16		11
Accounts receivable, less allowance for uncollectible accounts	224		212
Inventories	24		17
Prepayments of income taxes	28		55
Income taxes receivable	5		25
Prepaid expenses and other	36		9
Total Current Assets	424		333
INVESTMENTS AND OTHER ASSETS
Regulatory assets	661		667
Prepaid pension expense	74		51
Income taxes receivable	61		59
Restricted cash equivalents	11		5
Assets and accrued interest related to uncertain tax positions	35		38
Other	14		11
Total Investments and Other Assets	856		831
PROPERTY, PLANT AND EQUIPMENT
Property, plant and equipment	2,515		2,443
Accumulated depreciation	(758)		(729)
Net Property, Plant and Equipment	1,757		1,714
TOTAL ASSETS	3,037		2,878
CURRENT LIABILITIES
Short-term debt	23		181
Current portion of long-term debt and project funding	37		35
Accounts payable and accrued liabilities	132		120
Accounts payable due to associated companies	15		29
Taxes accrued	9		7
Interest accrued	21		13
Other	40		41
Total Current Liabilities	277		426
DEFERRED CREDITS
Regulatory liabilities	67		71
Deferred income taxes, net	696		659
Investment tax credits	7		8
Other postretirement benefit obligations	31		27
Other	17		13
Total Deferred Credits	818		778
LONG-TERM LIABILITIES
Long-term debt	832		633
Transition bonds issued by ACE Funding	306		332
Total Long-Term Liabilities	1,138		965
COMMITMENTS AND CONTINGENCIES
REDEEMABLE SERIAL PREFERRED STOCK			6
EQUITY
Common stock	26		26
Premium on stock and other capital contributions	576		516
Retained earnings	202		161
Total Equity	804		703
TOTAL LIABILITIES AND EQUITY	$ 3,037		$ 2,878

[1] Excludes the credit ratings associated with collateral posted by the lessees in these transactions.