Income Taxes (Interest And Penalties Related To Unrecognized Tax Benefits) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Income Taxes [Line Items]
Accumulated Interest and Penalties on Uncertain Tax Positions	$ 43	$ 70	$ 59
PSE&G [Member]
Income Taxes [Line Items]
Accumulated Interest and Penalties on Uncertain Tax Positions	12	25	22
Power [Member]
Income Taxes [Line Items]
Accumulated Interest and Penalties on Uncertain Tax Positions	9	24	17
Energy Holdings [Member]
Income Taxes [Line Items]
Accumulated Interest and Penalties on Uncertain Tax Positions	$ 22	$ 21	$ 20