Consolidated Statements of Income (Loss) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Operating Revenue	$ 1,117	$ 1,051	$ 2,447	$ 2,231
Operating Expenses
Fuel and purchased energy	463	446	1,077	1,008
Other services cost of sales	61	35	107	75
Other operation and maintenance	221	212	437	439
Depreciation and amortization	132	116	265	228
Other taxes	102	101	206	206
Deferred electric service costs	(13)	(4)	31	(3)
Total Operating Expenses	966	906	2,123	1,953
Operating Income	151	145	324	278
Other Income (Expenses)
Interest and dividend income	1		1
Interest expense	(67)	(70)	(132)	(137)
Other income	13	8	26	16
Total Other Expenses	(53)	(62)	(105)	(121)
Income Before Income Tax Expense	98	83	219	157
Income Tax Expense (Benefit)	45	30	91	215
Net Income (Loss) from Continuing Operations	53	53	128	(58)
Loss from Discontinued Operations, net of Income Taxes	0	(11)	0	(330)
Net Income (Loss)	53	42	128	(388)
Basic and Diluted Share Information
Weighted average shares outstanding - Basic (millions)	251	249	251	243
Weighted average shares outstanding - Diluted (millions)	252	249	251	243
Earnings (loss) per share of common stock from Continuing Operations - Basic and Diluted	$ 0.21	$ 0.21	$ 0.51	$ (0.24)
Earnings (loss) per share of common stock from Discontinued Operations - Basic and Diluted	$ 0.00	$ (0.04)	$ 0.00	$ (1.36)
Basic and Diluted earnings (loss) per share	$ 0.21	$ 0.17	$ 0.51	$ (1.60)
Potomac Electric Power Co [Member]
Operating Revenue
Operating Revenue	508	469	1,043	946
Operating Expenses
Fuel and purchased energy	177	157	407	349
Other operation and maintenance	91	95	184	197
Depreciation and amortization	56	49	112	96
Other taxes	90	88	180	177
Total Operating Expenses	414	389	883	819
Operating Income	94	80	160	127
Other Income (Expenses)
Interest expense	(30)	(28)	(57)	(54)
Other income	10	5	19	9
Total Other Expenses	(20)	(23)	(38)	(45)
Income Before Income Tax Expense	74	57	122	82
Income Tax Expense (Benefit)	28	20	44	22
Net Income (Loss)	46	37	78	60
Delmarva Power & Light Co/De [Member]
Operating Revenue
Electric	251	237	551	522
Natural gas	28	29	125	114
Operating Revenue	279	266	676	636
Operating Expenses
Fuel and purchased energy	121	121	282	280
Gas purchased	13	15	71	69
Other operation and maintenance	65	63	131	132
Depreciation and amortization	30	27	60	52
Other taxes	10	9	21	19
Total Operating Expenses	239	235	565	552
Operating Income	40	31	111	84
Other Income (Expenses)
Interest expense	(12)	(12)	(23)	(25)
Other income	4	2	6	4
Total Other Expenses	(8)	(10)	(17)	(21)
Income Before Income Tax Expense	32	21	94	63
Income Tax Expense (Benefit)	13	9	38	25
Net Income (Loss)	19	12	56	38
Atlantic City Electric Co [Member]
Operating Revenue
Operating Revenue	253	271	593	548
Operating Expenses
Fuel and purchased energy	151	154	316	311
Other operation and maintenance	52	58	113	119
Depreciation and amortization	37	32	75	63
Other taxes	1	2	2	6
Deferred electric service costs	(13)	(4)	31	(3)
Total Operating Expenses	228	242	537	496
Operating Income	25	29	56	52
Other Income (Expenses)
Interest expense	(16)	(18)	(31)	(35)
Other income	1		1
Total Other Expenses	(15)	(18)	(30)	(35)
Income Before Income Tax Expense	10	11	26	17
Income Tax Expense (Benefit)	4	4	10	1
Net Income (Loss)	$ 6	$ 7	$ 16	$ 16