Income Taxes (Interest And Penalties Related To Unrecognized Tax Benefits) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Income Taxes [Line Items]
Accumulated Interest and Penalties on Uncertain Tax Positions	$ 66	$ 69	$ 48
PSE&G [Member]
Income Taxes [Line Items]
Accumulated Interest and Penalties on Uncertain Tax Positions	20	15	6
Power [Member]
Income Taxes [Line Items]
Accumulated Interest and Penalties on Uncertain Tax Positions	6	9	(2)
Energy Holdings [Member]
Income Taxes [Line Items]
Accumulated Interest and Penalties on Uncertain Tax Positions	$ 40	$ 45	$ 44