Consolidated Statements Of Operations - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Operating Revenues	$ 9,084	$ 9,061	$ 10,415
Operating Expenses [Abstract]
Energy Costs	2,800	3,001	3,261
Operation and Maintenance	2,869	3,008	2,978
Depreciation and Amortization	1,986	1,476	1,214
Total Operating Expenses	7,655	7,485	7,453
OPERATING INCOME	1,429	1,576	2,962
Income from Equity Method Investments	14	11	12
Other Income	319	191	254
Other Deductions	(91)	(67)	(102)
Other-than-Temporary-Impairments	12	28	53
Interest Expense	(391)	(385)	(393)
Income (Loss) before Income Taxes	1,268	1,298	2,680
Income Tax (Expense) Benefit	306	(411)	(1,001)
Net Income	$ 1,574	$ 887	$ 1,679
WEIGHTED AVERAGE COMMON SHARES OUTSTANDING:
BASIC	505	505	505
DILUTED	507	508	508
EARNINGS PER SHARE:
NET INCOME, BASIC	$ 3.12	$ 1.76	$ 3.32
NET INCOME, DILUTED	$ 3.10	$ 1.75	$ 3.30
PSE&G [Member]
Operating Revenues	$ 6,234	$ 6,221	$ 6,636
Operating Expenses [Abstract]
Energy Costs	2,363	2,567	2,722
Operation and Maintenance	1,434	1,475	1,560
Depreciation and Amortization	685	565	892
Total Operating Expenses	4,482	4,607	5,174
OPERATING INCOME	1,752	1,614	1,462
Other Income	92	83	79
Other Deductions	(5)	(4)	(4)
Interest Expense	(303)	(289)	(280)
Income (Loss) before Income Taxes	1,536	1,404	1,257
Income Tax (Expense) Benefit	(563)	(515)	(470)
Net Income	973	889	787
Power [Member]
Operating Revenues	3,930	4,023	4,928
Operating Expenses [Abstract]
Energy Costs	1,983	1,986	2,150
Operation and Maintenance	1,038	1,143	1,057
Depreciation and Amortization	1,268	881	291
Total Operating Expenses	4,289	4,010	3,498
OPERATING INCOME	(359)	13	1,430
Income from Equity Method Investments	14	11	14
Other Income	213	102	169
Other Deductions	(56)	(57)	(72)
Other-than-Temporary-Impairments	12	28	53
Interest Expense	(50)	(84)	(121)
Income (Loss) before Income Taxes	(250)	(43)	1,367
Income Tax (Expense) Benefit	729	61	(511)
Net Income	$ 479	$ 18	$ 856