Consolidated Statements Of Income (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2012		Mar. 31, 2011
Operating Revenue
Power Delivery	$ 1,055		$ 1,249
Pepco Energy Services	228		373
Other	9		12
Total Operating Revenue	1,292		1,634
Operating Expenses
Fuel and purchased energy	684		995
Other services cost of sales	45		43
Other operation and maintenance	225		234
Depreciation and amortization	110		105
Other taxes	104		111
Deferred electric service costs	(15)		(3)
Total Operating Expenses	1,153	[1]	1,485	[2]
Operating Income	139		149
Other Income (Expenses)
Interest expense	(65)		(62)
Loss from equity investments			(1)
Other income	8		10
Total Other Expenses	(57)		(53)
Income from Continuing Operations Before Income Tax Expense	82		96
Income Tax Expense Related to Continuing Operations	14		34
Net Income from Continuing Operations	68		62
Income Tax (Benefit) Expense	14		34
Income from Discontinued Operations, net of Income Taxes			2
Net Income	68		64
Basic and Diluted Earnings per Share Information
Weighted average shares outstanding (millions)	228		225
Earnings per share of common stock from Continuing Operations	$ 0.30		$ 0.27
Earnings per share of common stock from Discontinued Operations			$ 0.01
Basic and diluted earnings per share	$ 0.30		$ 0.28
Potomac Electric Power Co [Member]
Operating Revenue
Total Operating Revenue	465		534
Operating Expenses
Purchased energy	185		255
Other operation and maintenance	103		102
Depreciation and amortization	47		42
Other taxes	90		92
Total Operating Expenses	425		491
Operating Income	40		43
Other Income (Expenses)
Interest expense	(25)		(24)
Other income	4		6
Total Other Expenses	(21)		(18)
Income from Continuing Operations Before Income Tax Expense	19		25
Income Tax (Benefit) Expense	(5)		7
Net Income	24		18
Delmarva Power & Light Co/De [Member]
Operating Revenue
Electric	259		298
Natural Gas	74		102
Total Operating Revenue	333		400
Operating Expenses
Purchased energy	143		182
Gas purchased	49		71
Other operation and maintenance	65		65
Depreciation and amortization	24		22
Other taxes	9		11
Total Operating Expenses	290		351
Operating Income	43		49
Other Income (Expenses)
Interest expense	(11)		(11)
Other income	3		2
Total Other Expenses	(8)		(9)
Income from Continuing Operations Before Income Tax Expense	35		40
Income Tax (Benefit) Expense	14		17
Net Income	21		23
Atlantic City Electric Co [Member]
Operating Revenue
Total Operating Revenue	256		315
Operating Expenses
Purchased energy	166		198
Other operation and maintenance	56		55
Depreciation and amortization	28		33
Other taxes	4		6
Deferred electric service costs	(15)		(3)
Total Operating Expenses	239		289
Operating Income	17		26
Other Income (Expenses)
Interest expense	(17)		(15)
Other income	1
Total Other Expenses	(16)		(15)
Income from Continuing Operations Before Income Tax Expense	1		11
Income Tax (Benefit) Expense	(1)		5
Net Income	$ 2		$ 6

[1] Includes depreciation and amortization expense of $110 million, consisting of $99 million for Power Delivery, $6 million for Pepco Energy Services, $1 million for Other Non-Regulated and $4 million for Corporate and Other.

[2] Includes depreciation and amortization expense of $105 million, consisting of $97 million for Power Delivery, $4 million for Pepco Energy Services and $4 million for Corporate and Other.