Other Income And Deductions (Schedule Of Other Deductions) (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014		Dec. 31, 2013		Dec. 31, 2012
Components of Other Deductions [Roll Forward]
NDT Fund Realized Losses and Expenses	$ 31		$ 34		$ 58
Gains (Losses) on Extinguishment of Debt					15
Other	30		20		25
Total Other Deductions	61		54		98
PSE&G [Member]
Components of Other Deductions [Roll Forward]
NDT Fund Realized Losses and Expenses	0		0		0
Gains (Losses) on Extinguishment of Debt					0
Other	3		3		5
Total Other Deductions	3		3		5
Power [Member]
Components of Other Deductions [Roll Forward]
NDT Fund Realized Losses and Expenses	31		34		58
Gains (Losses) on Extinguishment of Debt					15
Other	21		15		17
Total Other Deductions	52		49		90
Other [Member]
Components of Other Deductions [Roll Forward]
NDT Fund Realized Losses and Expenses	0	[1]	0	[1]	0	[1]
Gains (Losses) on Extinguishment of Debt					0	[1]
Other	6	[1]	2	[1]	3	[1]
Total Other Deductions	$ 6	[1]	$ 2	[1]	$ 3	[1]

[1] Other primarily consists of activity at PSEG (as parent company), Energy Holdings, Services and intercompany eliminations.