Long-Term Investments (Schedule Of Long Term Investments) (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Long-Term Investments [Line Items]
Total Long-Term Investments		$ 1,233	$ 1,307
Dividends in equity method investments		16	17	$ 11
Power [Member]
Long-Term Investments [Line Items]
Total Long-Term Investments		119	121
PSE&G [Member]
Long-Term Investments [Line Items]
Total Long-Term Investments		330	348
Life Insurance And Supplemental Benefits [Member] | PSE&G [Member]
Long-Term Investments [Line Items]
Total Long-Term Investments		150	156
Solar Loan Investments [Member] | PSE&G [Member]
Long-Term Investments [Line Items]
Total Long-Term Investments		175	187
Lease Investments [Member] | Energy Holdings [Member]
Long-Term Investments [Line Items]
Total Long-Term Investments		784	836
Partnerships And Corporate Joint Ventures [Member] | Power [Member]
Long-Term Investments [Line Items]
Total Long-Term Investments	[1]	119	121
Other Investments [Member] | PSE&G [Member]
Long-Term Investments [Line Items]
Total Long-Term Investments		5	5
Equity Method Investments [Member] | Partnerships And Corporate Joint Ventures [Member] | Energy Holdings [Member]
Long-Term Investments [Line Items]
Total Long-Term Investments		$ 0	$ 2

[1] During the three years ended December 31, 2015, 2014 and 2013, the amount of dividends from these investments was $16 million, $17 million and $11 million, respectively.