Income Taxes (Possible Decrease In Total Unrecognized Tax Benefits Including Interest) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Income Taxes [Line Items]
Possible Decrease in Total Unrecognized Tax Benefits including Interest	$ 59
Power [Member]
Income Taxes [Line Items]
Possible Decrease in Total Unrecognized Tax Benefits including Interest		2
PSE&G [Member]
Income Taxes [Line Items]
Possible Decrease in Total Unrecognized Tax Benefits including Interest			$ 23