Other Income And Deductions (Schedule Of Other Deductions) (Detail) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Components of Other Deductions [Roll Forward]
NDT Fund Realized Losses and Expenses		$ 40	$ 45	$ 31
Other		27	57	30
Total Other Deductions		67	102	61
PSE&G [Member]
Components of Other Deductions [Roll Forward]
NDT Fund Realized Losses and Expenses		0	0	0
Other		4	4	3
Total Other Deductions		4	4	3
Power [Member]
Components of Other Deductions [Roll Forward]
NDT Fund Realized Losses and Expenses		40	45	31
Other		17	27	21
Total Other Deductions		57	72	52
Other [Member]
Components of Other Deductions [Roll Forward]
NDT Fund Realized Losses and Expenses	[1]	0	0	0
Other	[1]	6	26	6
Total Other Deductions	[1]	$ 6	$ 26	$ 6

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