Commitments And Contingent Liabilities (Future Minimum Lease Payments) (Details) $ in Millions	Dec. 31, 2018 USD ($)
Other Commitments [Line Items]
Operating Leases, Future Minimum Payments due, Next Twelve Months	$ 41
Operating Leases, Future Minimum Payments, Due in Two Years	40
Operating Leases, Future Minimum Payments, Due in Three Years	39
Operating Leases, Future Minimum Payments, Due in Four Years	38
Operating Leases, Future Minimum Payments, Due in Five Years	31
Operating Leases, Future Minimum Payments, Due Thereafter	222
Operating Leases, Future Minimum Payments Due	411
PSE&G [Member]
Other Commitments [Line Items]
Operating Leases, Future Minimum Payments due, Next Twelve Months	15
Operating Leases, Future Minimum Payments, Due in Two Years	11
Operating Leases, Future Minimum Payments, Due in Three Years	10
Operating Leases, Future Minimum Payments, Due in Four Years	8
Operating Leases, Future Minimum Payments, Due in Five Years	8
Operating Leases, Future Minimum Payments, Due Thereafter	66
Operating Leases, Future Minimum Payments Due	118
Power [Member]
Other Commitments [Line Items]
Operating Leases, Future Minimum Payments due, Next Twelve Months	11
Operating Leases, Future Minimum Payments, Due in Two Years	13
Operating Leases, Future Minimum Payments, Due in Three Years	13
Operating Leases, Future Minimum Payments, Due in Four Years	14
Operating Leases, Future Minimum Payments, Due in Five Years	8
Operating Leases, Future Minimum Payments, Due Thereafter	51
Operating Leases, Future Minimum Payments Due	110
Services [Member]
Other Commitments [Line Items]
Operating Leases, Future Minimum Payments due, Next Twelve Months	14
Operating Leases, Future Minimum Payments, Due in Two Years	14
Operating Leases, Future Minimum Payments, Due in Three Years	15
Operating Leases, Future Minimum Payments, Due in Four Years	15
Operating Leases, Future Minimum Payments, Due in Five Years	15
Operating Leases, Future Minimum Payments, Due Thereafter	105
Operating Leases, Future Minimum Payments Due	178
Other [Member]
Other Commitments [Line Items]
Operating Leases, Future Minimum Payments due, Next Twelve Months	1
Operating Leases, Future Minimum Payments, Due in Two Years	2
Operating Leases, Future Minimum Payments, Due in Three Years	1
Operating Leases, Future Minimum Payments, Due in Four Years	1
Operating Leases, Future Minimum Payments, Due in Five Years	0
Operating Leases, Future Minimum Payments, Due Thereafter	0
Operating Leases, Future Minimum Payments Due	$ 5