Commitments And Contingent Liabilities (Future Minimum Lease Payments) (Details) $ in Millions	Dec. 31, 2016 USD ($)
Other Commitments [Line Items]
Due Next Twelve Months	$ 29
Due in Two Years	25
Due in Three Years	24
Due in Four Years	22
Due in Five Years	23
Thereafter	232
Capital Leases, Future Minimum Payments Due	355
PSE&G [Member]
Other Commitments [Line Items]
Due Next Twelve Months	12
Due in Two Years	8
Due in Three Years	7
Due in Four Years	6
Due in Five Years	6
Thereafter	61
Capital Leases, Future Minimum Payments Due	100
Power [Member]
Other Commitments [Line Items]
Due Next Twelve Months	3
Due in Two Years	3
Due in Three Years	3
Due in Four Years	2
Due in Five Years	2
Thereafter	39
Capital Leases, Future Minimum Payments Due	52
Services [Member]
Other Commitments [Line Items]
Due Next Twelve Months	13
Due in Two Years	13
Due in Three Years	13
Due in Four Years	13
Due in Five Years	14
Thereafter	132
Capital Leases, Future Minimum Payments Due	198
Other [Member]
Other Commitments [Line Items]
Due Next Twelve Months	1
Due in Two Years	1
Due in Three Years	1
Due in Four Years	1
Due in Five Years	1
Thereafter	0
Capital Leases, Future Minimum Payments Due	$ 5