Consolidated Statements of Income (Loss) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Operating Revenue	$ 1,330	$ 1,180
Operating Expenses
Fuel and purchased energy	614	562
Other services cost of sales	46	40
Other operation and maintenance	216	227
Depreciation and amortization	133	112
Other taxes	104	105
Deferred electric service costs	44	1
Total Operating Expenses	1,157	1,047
Operating Income	173	133
Other Income (Expenses)
Interest expense	(65)	(67)
Other income	13	8
Total Other Expenses	(52)	(59)
Income Before Income Tax Expense	121	74
Income Tax Expense (Benefit)	46	185
Net Income (Loss) from Continuing Operations	75	(111)
Loss from Discontinued Operations, net of Income Taxes		(319)
Net Income	75	(430)
Basic and Diluted Share Information
Weighted average shares outstanding - Basic (millions)	251	237
Weighted average shares outstanding - Diluted (millions)	251	237
Earnings (loss) per share of common stock from Continuing Operations - Basic and Diluted	$ 0.30	$ (0.47)
Earnings (loss) per share of common stock from Discontinued Operations - Basic and Diluted		$ (1.35)
Basic and Diluted earnings (loss) per share	$ 0.30	$ (1.82)
Atlantic City Electric Co [Member]
Operating Revenue
Operating Revenue	340	277
Operating Expenses
Fuel and purchased energy	165	157
Other operation and maintenance	61	61
Depreciation and amortization	38	31
Other taxes	1	4
Deferred electric service costs	44	1
Total Operating Expenses	309	254
Operating Income	31	23
Other Income (Expenses)
Interest expense	(15)	(17)
Total Other Expenses	(15)	(17)
Income Before Income Tax Expense	16	6
Income Tax Expense (Benefit)	6	(3)
Net Income	10	9
Delmarva Power & Light Co/De [Member]
Operating Revenue
Electric	300	285
Natural gas	97	85
Operating Revenue	397	370
Operating Expenses
Fuel and purchased energy	161	159
Gas purchased	58	54
Other operation and maintenance	66	69
Depreciation and amortization	30	25
Other taxes	11	10
Total Operating Expenses	326	317
Operating Income	71	53
Other Income (Expenses)
Interest expense	(11)	(13)
Other income	2	2
Total Other Expenses	(9)	(11)
Income Before Income Tax Expense	62	42
Income Tax Expense (Benefit)	25	16
Net Income	37	26
Potomac Electric Power Co [Member]
Operating Revenue
Operating Revenue	535	477
Operating Expenses
Fuel and purchased energy	230	192
Other operation and maintenance	93	102
Depreciation and amortization	56	47
Other taxes	90	89
Total Operating Expenses	469	430
Operating Income	66	47
Other Income (Expenses)
Interest expense	(27)	(26)
Other income	9	4
Total Other Expenses	(18)	(22)
Income Before Income Tax Expense	48	25
Income Tax Expense (Benefit)	16	2
Net Income	$ 32	$ 23