Consolidated Statements Of Cash Flows - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
CASH FLOWS FROM OPERATING ACTIVITIES
Net Income	$ 887	$ 1,679	$ 1,518
Adjustments to Reconcile Net Income to Net Cash Flows from Operating Activities:
Depreciation and Amortization	1,476	1,214	1,227
Amortization of Nuclear Fuel	203	213	200
Renewable Energy Credit Compliance Accrual	109	104	69
Impairment Costs for Early Plant Retirements	102	0	0
Provision for Deferred Income Taxes (Other than Leases) and ITC	474	685	515
Non-Cash Employee Benefit Plan Costs	127	161	47
Leveraged Lease Income, Adjusted for Rents Received and Deferred Taxes	(6)	26	(4)
Net (Gain) Loss on Lease Investments	92	0	(3)
Net Realized and Unrealized (Gains) Losses on Energy Contracts and Other Derivatives	183	(143)	(93)
Net Change in Regulatory Assets and Liabilities	(138)	(48)	187
Cost of Removal	(131)	(120)	(98)
Net Realized (Gains) Losses and (Income) Expense from NDT Fund	(26)	(38)	(166)
Net Change in Certain Current Assets and Liabilities:
Margin Deposits	(76)	122	(22)
Tax Receivable	303	(94)	30
Accrued Taxes	3	(91)	(156)
Other Current Assets and Liabilities	(180)	288	(31)
Employee Benefit Plan Funding and Related Payments	(103)	(109)	(95)
Other	12	70	35
Net Cash Provided By (Used In) Operating Activities	3,311	3,919	3,160
CASH FLOWS FROM INVESTING ACTIVITIES
Additions to Property, Plant and Equipment	(4,199)	(3,863)	(2,820)
Purchase of Emissions Allowances and RECs	(99)	(106)	(101)
Proceeds from Sale of Capital Leases and Investments	0	14	25
Proceeds from Sale of Available-for-Sale Securities	824	1,501	1,915
Investments in Available-for-Sale Securities	(856)	(1,552)	(1,934)
Other	82	64	23
Net Cash Provided By (Used In) Investing Activities	(4,248)	(3,942)	(2,892)
CASH FLOWS FROM FINANCING ACTIVITIES
Net Change in Commercial Paper and Loans	24	364	(60)
Issuance of Long-Term Debt	2,675	1,350	1,250
Redemption of Long-Term Debt	(824)	(600)	(500)
Redemption of Securitization Debt	0	(259)	(237)
Cash Dividend Paid	(830)	(789)	(748)
Other	(79)	(51)	(64)
Net Cash Provided By (Used In) Financing Activities	966	15	(359)
Net Increase (Decrease) In Cash and Cash Equivalents	29	(8)	(91)
Cash and Cash Equivalents at Beginning of Period	394	402	493
Cash and Cash Equivalents at End of Period	423	394	402
Supplemental Disclosure of Cash Flow Information:
Income Taxes Paid (Received)	(245)	447	538
Interest Paid, Net of Amounts Capitalized	365	381	382
Accrued Property, Plant and Equipment Expenditures	664	510	382
PSE&G [Member]
CASH FLOWS FROM OPERATING ACTIVITIES
Net Income	889	787	725
Adjustments to Reconcile Net Income to Net Cash Flows from Operating Activities:
Depreciation and Amortization	565	892	906
Provision for Deferred Income Taxes (Other than Leases) and ITC	658	386	310
Non-Cash Employee Benefit Plan Costs	72	95	27
Net Change in Regulatory Assets and Liabilities	(138)	(48)	187
Cost of Removal	(131)	(120)	(98)
Net Change in Certain Current Assets and Liabilities:
Accounts Receivable and Unbilled Revenues	(84)	165	63
Fuel, Materials and Supplies	(7)	(15)	(18)
Prepayments	22	11	(18)
Accounts Payable	(29)	45	(3)
Accounts Receivable/Payable-Affiliated Companies, net	199	0	(167)
Other Current Assets and Liabilities	8	(29)	6
Employee Benefit Plan Funding and Related Payments	(82)	(91)	(83)
Other	(48)	47	(4)
Net Cash Provided By (Used In) Operating Activities	1,894	2,125	1,833
CASH FLOWS FROM INVESTING ACTIVITIES
Additions to Property, Plant and Equipment	(2,816)	(2,692)	(2,164)
Proceeds from Sale of Available-for-Sale Securities	22	21	103
Investments in Available-for-Sale Securities	(24)	(22)	(101)
Solar Loan Investments	14	11	7
Other	15	11	0
Net Cash Provided By (Used In) Investing Activities	(2,789)	(2,671)	(2,155)
CASH FLOWS FROM FINANCING ACTIVITIES
Net Change in Short-Term Debt	(153)	153	(60)
Issuance of Long-Term Debt	1,275	850	1,250
Redemption of Long-Term Debt	(271)	(300)	(500)
Contributed Capital	250	0	175
Redemption of Securitization Debt	0	(259)	(237)
Other	(14)	(10)	(14)
Net Cash Provided By (Used In) Financing Activities	1,087	434	614
Net Increase (Decrease) In Cash and Cash Equivalents	192	(112)	292
Cash and Cash Equivalents at Beginning of Period	198	310	18
Cash and Cash Equivalents at End of Period	390	198	310
Supplemental Disclosure of Cash Flow Information:
Income Taxes Paid (Received)	(295)	(28)	283
Interest Paid, Net of Amounts Capitalized	273	261	259
Accrued Property, Plant and Equipment Expenditures	420	396	292
Power [Member]
CASH FLOWS FROM OPERATING ACTIVITIES
Net Income	18	856	760
Adjustments to Reconcile Net Income to Net Cash Flows from Operating Activities:
Depreciation and Amortization	881	291	292
Amortization of Nuclear Fuel	203	213	200
Renewable Energy Credit Compliance Accrual	109	104	69
Impairment Costs for Early Plant Retirements	102	0	0
Provision for Deferred Income Taxes (Other than Leases) and ITC	(208)	261	221
Interest Accretion on Asset Retirement Obligation	26	26	30
Non-Cash Employee Benefit Plan Costs	39	48	13
Net Realized and Unrealized (Gains) Losses on Energy Contracts and Other Derivatives	183	(143)	(93)
Net Realized (Gains) Losses and (Income) Expense from NDT Fund	(26)	(38)	(166)
Net Change in Certain Current Assets and Liabilities:
Fuel, Materials and Supplies	31	62	19
Margin Deposits	(76)	122	(22)
Accounts Receivable	(71)	63	(15)
Accounts Payable	(22)	(46)	(59)
Accounts Receivable/Payable-Affiliated Companies, net	6	(84)	220
Other Current Assets and Liabilities	10	(36)	(6)
Employee Benefit Plan Funding and Related Payments	(13)	(11)	(7)
Other	63	18	(31)
Net Cash Provided By (Used In) Operating Activities	1,255	1,706	1,425
CASH FLOWS FROM INVESTING ACTIVITIES
Additions to Property, Plant and Equipment	(1,343)	(1,117)	(626)
Purchase of Emissions Allowances and RECs	(99)	(106)	(101)
Proceeds from Sale of Available-for-Sale Securities	739	1,422	1,557
Investments in Available-for-Sale Securities	(766)	(1,455)	(1,573)
Short-Term Loan-Affiliated Company, net	276	221	206
Other	46	34	13
Net Cash Provided By (Used In) Investing Activities	(1,147)	(1,001)	(524)
CASH FLOWS FROM FINANCING ACTIVITIES
Issuance of Long-Term Debt	700	0	0
Redemption of Long-Term Debt	(553)	(300)	0
Cash Dividend Paid	(250)	(400)	(895)
Other	(6)	(2)	(3)
Net Cash Provided By (Used In) Financing Activities	(109)	(702)	(898)
Net Increase (Decrease) In Cash and Cash Equivalents	(1)	3	3
Cash and Cash Equivalents at Beginning of Period	12	9	6
Cash and Cash Equivalents at End of Period	11	12	9
Supplemental Disclosure of Cash Flow Information:
Income Taxes Paid (Received)	50	393	68
Interest Paid, Net of Amounts Capitalized	81	116	119
Accrued Property, Plant and Equipment Expenditures	$ 244	$ 114	$ 91