Property, Plant And Equipment And Jointly-Owned Facilities (Schedule Of Jointly-Owned Facilities) (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Conemaugh [Member] | Power [Member]
Public Utility, Property, Plant and Equipment [Line Items]
Ownership Interest	23.00%
Plant	$ 374	$ 321
Accumulated Depreciation	139	132
Keystone [Member] | Power [Member]
Public Utility, Property, Plant and Equipment [Line Items]
Ownership Interest	23.00%
Plant	388	387
Accumulated Depreciation	140	128
Peach Bottom [Member] | Power [Member]
Public Utility, Property, Plant and Equipment [Line Items]
Ownership Interest	50.00%
Plant	886	730
Accumulated Depreciation	215	193
Salem [Member] | Power [Member]
Public Utility, Property, Plant and Equipment [Line Items]
Ownership Interest	57.00%
Plant	897	865
Accumulated Depreciation	254	209
Nuclear Support Facilities [Member] | Power [Member]
Public Utility, Property, Plant and Equipment [Line Items]
Plant	205	191
Accumulated Depreciation	37	29
Yards Creek [Member] | Power [Member]
Public Utility, Property, Plant and Equipment [Line Items]
Ownership Interest	50.00%
Plant	36	35
Accumulated Depreciation	23	23
Merrill Creek Reservoir [Member] | Power [Member]
Public Utility, Property, Plant and Equipment [Line Items]
Ownership Interest	14.00%
Plant	1	1
Accumulated Depreciation	0	0
Transmission Facilities [Member] | PSE&G [Member]
Public Utility, Property, Plant and Equipment [Line Items]
Plant	161	156
Accumulated Depreciation	$ 66	$ 63