Consolidated Statements Of Cash Flows - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
CASH FLOWS FROM OPERATING ACTIVITIES
Net Income	$ 1,693	$ 1,438	$ 1,574
Adjustments to Reconcile Net Income to Net Cash Flows from Operating Activities:
Depreciation and Amortization	1,248	1,158	1,986
Amortization of Nuclear Fuel	178	187	199
Gain (Loss) on Disposition of Assets	402	(54)	0
Emission Allowances and Renewable Energy Credit Compliance Accrual	108	97	103
Provision for Deferred Income Taxes (Other than Leases) and ITC	180	568	(167)
Non-Cash Employee Benefit Plan Costs	(48)	70	89
Leveraged Lease Income, Adjusted for Rents Received and Deferred Taxes	(14)	(149)	(159)
Net (Gain) Loss on Lease Investments	32	5	48
Net Realized and Unrealized (Gains) Losses on Energy Contracts and Other Derivatives	(290)	116	188
Net Change in Regulatory Assets and Liabilities	25	(153)	(188)
Cost of Removal	(108)	(160)	(107)
Net Realized (Gains) Losses and (Income) Expense from NDT Fund	(296)	98	(156)
Net Change in Certain Current Assets and Liabilities:
Margin Deposits	349	(247)	(90)
Tax Receivable	77	17	65
Accrued Taxes	(9)	(69)	16
Other Current Assets and Liabilities	(145)	70	(72)
Employee Benefit Plan Funding and Related Payments	(39)	(101)	(81)
Other	36	22	12
Net Cash Provided By (Used In) Operating Activities	3,379	2,913	3,260
CASH FLOWS FROM INVESTING ACTIVITIES
Additions to Property, Plant and Equipment	(3,166)	(3,912)	(4,190)
Purchase of Emissions Allowances and RECs	(98)	(146)	(117)
Proceeds from Sale of Available-for-Sale Securities	1,787	1,501	2,319
Investments in Available-for-Sale Securities	(1,814)	(1,473)	(2,340)
Other	146	114	72
Net Cash Provided By (Used In) Investing Activities	(3,145)	(3,916)	(4,256)
CASH FLOWS FROM FINANCING ACTIVITIES
Net Change in Commercial Paper and Loans	99	474	154
Issuance of Long-Term Debt	1,900	2,750	2,175
Redemption of Long-Term Debt	(1,250)	(1,350)	(500)
Cash Dividend Paid	(950)	(910)	(870)
Other	(56)	(77)	(74)
Net Cash Provided By (Used In) Financing Activities	(257)	887	885
Net Increase (Decrease) in Cash, Cash Equivalents and Restricted Cash	(23)	(116)	(111)
Cash, Cash Equivalents and Restricted Cash, beginning	199	315	426
Cash, Cash Equivalents and Restricted Cash, ending	176	199	315
Supplemental Disclosure of Cash Flow Information:
Income Taxes Paid (Received)	41	99	(8)
Interest Paid, Net of Amounts Capitalized	539	454	377
Accrued Property, Plant and Equipment Expenditures	499	517	722
Public Service Electric and Gas Company
CASH FLOWS FROM OPERATING ACTIVITIES
Net Income	1,250	1,067	973
Adjustments to Reconcile Net Income to Net Cash Flows from Operating Activities:
Depreciation and Amortization	837	770	685
Depreciation and Amortization			685
Provision for Deferred Income Taxes (Other than Leases) and ITC	(28)	405	616
Non-Cash Employee Benefit Plan Costs	(62)	37	50
Net Change in Regulatory Assets and Liabilities	25	(153)	(188)
Cost of Removal	(108)	(160)	(107)
Net Change in Certain Current Assets and Liabilities:
Accounts Receivable and Unbilled Revenues	(18)	65	(106)
Fuel, Materials and Supplies	(14)	1	(13)
Prepayments	(9)	14	(35)
Accounts Payable	(59)	64	1
Accounts Receivable/Payable-Affiliated Companies, net	203	(139)	101
Other Current Assets and Liabilities	62	5	15
Employee Benefit Plan Funding and Related Payments	(21)	(85)	(68)
Other	(23)	(38)	(86)
Net Cash Provided By (Used In) Operating Activities	2,035	1,853	1,838
CASH FLOWS FROM INVESTING ACTIVITIES
Additions to Property, Plant and Equipment	(2,542)	(2,896)	(2,919)
Proceeds from Sale of Available-for-Sale Securities	36	20	36
Investments in Available-for-Sale Securities	(34)	(22)	(37)
Solar Loan Investments	8	(5)	7
Other	10	9	10
Net Cash Provided By (Used In) Investing Activities	(2,522)	(2,894)	(2,903)
CASH FLOWS FROM FINANCING ACTIVITIES
Net Change in Commercial Paper and Loans	90	272	0
Issuance of Long-Term Debt	1,150	1,350	775
Redemption of Long-Term Debt	(500)	(750)	0
Contributed Capital	0	0	150
Cash Dividend Paid	(250)	0	0
Other	(14)	(14)	(9)
Net Cash Provided By (Used In) Financing Activities	476	858	916
Net Increase (Decrease) in Cash, Cash Equivalents and Restricted Cash	(11)	(183)	(149)
Cash, Cash Equivalents and Restricted Cash, beginning	61	244	393
Cash, Cash Equivalents and Restricted Cash, ending	50	61	244
Supplemental Disclosure of Cash Flow Information:
Income Taxes Paid (Received)	(48)	94	(104)
Interest Paid, Net of Amounts Capitalized	343	318	294
Accrued Property, Plant and Equipment Expenditures	335	350	429
PSEG Power LLC
CASH FLOWS FROM OPERATING ACTIVITIES
Net Income	468	365	479
Adjustments to Reconcile Net Income to Net Cash Flows from Operating Activities:
Depreciation and Amortization	377	354	1,268
Depreciation and Amortization			1,268
Amortization of Nuclear Fuel	178	187	199
Gain (Loss) on Disposition of Assets	402	(54)	0
Emission Allowances and Renewable Energy Credit Compliance Accrual	108	97	103
Provision for Deferred Income Taxes (Other than Leases) and ITC	248	206	(807)
Interest Accretion on Asset Retirement Obligation	40	41	30
Non-Cash Employee Benefit Plan Costs	7	23	28
Net Realized and Unrealized (Gains) Losses on Energy Contracts and Other Derivatives	(290)	116	188
Net Realized (Gains) Losses and (Income) Expense from NDT Fund	(296)	98	(156)
Net Change in Certain Current Assets and Liabilities:
Fuel, Materials and Supplies	(1)	(39)	42
Margin Deposits	349	(247)	(90)
Accounts Receivable	(32)	51	(45)
Accounts Payable	5	(13)	39
Accounts Receivable/Payable-Affiliated Companies, net	(112)	(56)	(2)
Other Current Assets and Liabilities	14	(40)	10
Employee Benefit Plan Funding and Related Payments	(11)	(9)	(7)
Other	25	4	47
Net Cash Provided By (Used In) Operating Activities	1,479	1,084	1,326
CASH FLOWS FROM INVESTING ACTIVITIES
Additions to Property, Plant and Equipment	(607)	(996)	(1,231)
Purchase of Emissions Allowances and RECs	(98)	(146)	(117)
Proceeds from Sale of Available-for-Sale Securities	1,658	1,423	2,182
Investments in Available-for-Sale Securities	(1,685)	(1,392)	(2,199)
Increase (Decrease) Due from Affiliates	149	0	(87)
Other	120	60	46
Net Cash Provided By (Used In) Investing Activities	(761)	(1,051)	(1,232)
CASH FLOWS FROM FINANCING ACTIVITIES
Issuance of Long-Term Debt	0	700	0
Redemption of Long-Term Debt	0	(250)	0
Increase (Decrease) in Due to Affiliates	(193)	(88)	281
Cash Dividend Paid	(525)	(400)	(350)
Other	(1)	(5)	(4)
Net Cash Provided By (Used In) Financing Activities	(719)	(43)	(73)
Net Increase (Decrease) in Cash, Cash Equivalents and Restricted Cash	(1)	(10)	21
Cash, Cash Equivalents and Restricted Cash, beginning	22	32	11
Cash, Cash Equivalents and Restricted Cash, ending	21	22	32
Supplemental Disclosure of Cash Flow Information:
Income Taxes Paid (Received)	(41)	(92)	77
Interest Paid, Net of Amounts Capitalized	113	73	48
Accrued Property, Plant and Equipment Expenditures	$ 164	$ 167	$ 293