Commitments And Contingencies (Tables)

3 Months Ended

Mar. 31, 2013

Schedule Of Accrued Liabilities For Environmental Exposures

			Legacy Generation
	Transmission and  Distribution		Regulated		Non- Regulated		Other		Total
	(millions of dollars)
Beginning balance as of January 1	$	15	$	7	$	5	$	2	$	29
Accruals		—		—		—		—		—
Payments		—		1		—		—		1
Ending balance as of March 31		15		6		5		2		28
Less amounts in Other current liabilities		2		1		—		2		5
Amounts in Other deferred credits	$	13	$	5	$	5	$	—	$	23

Schedule Of Commitments And Obligations

	Guarantor
	PHI		Pepco		DPL		ACE		Total
Energy procurement obligations of Pepco Energy Services (a)	$	75	$	—	$	—	$	—	$	75
Guarantees associated with disposal of Conectiv Energy assets (b)		13		—		—		—		13
Guaranteed lease residual values (c)		2		5		7		4		18
Total	$	90	$	5	$	7	$	4	$	106

Delmarva Power & Light Co/De [Member]

Schedule Of Accrued Liabilities For Environmental Exposures

	Transmission and Distribution		Legacy Generation  - Regulated		Other		Total
	(millions of dollars)
Beginning balance as of January 1	$	1	$	3	$	2	$	6
Accruals		—		—		—		—
Payments		—		1		—		1
Ending balance as of March 31		1		2		2		5
Less amounts in Other Current Liabilities		1		1		2		4
Amounts in Other Deferred Credits	$	—	$	1	$	—	$	1

Atlantic City Electric Co [Member]

Schedule Of Accrued Liabilities For Environmental Exposures

	Legacy Generation - Regulated
	(millions of dollars)
Beginning balance as of January 1	$	1
Accruals		—
Payments		—
Ending balance as of March 31		1
Less amounts in Other Current Liabilities		—
Amounts in Other Deferred Credits	$	1

Potomac Electric Power Co [Member]

Schedule Of Accrued Liabilities For Environmental Exposures

	Transmission and Distribution		Legacy Generation - Regulated		Total
	(millions of dollars)
Beginning balance as of January 1	$	14	$	3	$	17
Accruals		—		—		—
Payments		—		—		—
Ending balance as of March 31		14		3		17
Less amounts in Other current liabilities		1		—		1
Amounts in Other deferred credits	$	13	$	3	$	16