Income Taxes (Interest And Penalties Related To Unrecognized Tax Benefits) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Income Taxes [Line Items]
Interest and Penalties on Uncertain Tax Positions	$ 69	$ 48	$ 38
PSE&G [Member]
Income Taxes [Line Items]
Interest and Penalties on Uncertain Tax Positions	15	6	1
Power [Member]
Income Taxes [Line Items]
Interest and Penalties on Uncertain Tax Positions	9	(2)	(2)
Energy Holdings [Member]
Income Taxes [Line Items]
Interest and Penalties on Uncertain Tax Positions	$ 45	$ 44	$ 39