Condensed Consolidated Statements Of Cash Flows - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
CASH FLOWS FROM OPERATING ACTIVITIES
Net Income	$ (2)	$ 648
Adjustments to Reconcile Net Income to Net Cash Flows from Operating Activities:
Depreciation and Amortization	283	341
Amortization of Nuclear Fuel	50	49
(Gains) Losses on Asset Dispositions and Impairments	43	0
Emission Allowances and Renewable Energy Credit Compliance Accrual	28	43
Provision for Deferred Income Taxes and ITC	(340)	96
Non-Cash Employee Benefit Plan (Credits) Costs	(60)	(44)
Leveraged Lease (Income), (Gains) and Losses, Adjusted for Rents Received and Deferred Taxes	31	16
Net Realized and Unrealized (Gains) Losses on Energy Contracts and Other Derivatives	847	46
Payments for Removal Costs	(30)	(27)
Net Change in Regulatory Assets and Liabilities	(122)	(28)
Net Realized (Gains) Losses and (Income) Expense from NDT Fund	54	(68)
Net Change in Certain Current Assets and Liabilities:
Tax Receivable	1	66
Accrued Taxes	215	(44)
Margin Deposit	(683)	(44)
Obligation to Return Cash Collateral	205	(4)
Other Current Assets and Liabilities	20	(26)
Employee Benefit Plan Funding and Related Payments	(6)	(3)
Other	62	(10)
Net Cash Provided By (Used In) Operating Activities	472	1,027
CASH FLOWS FROM INVESTING ACTIVITIES
Additions to Property, Plant and Equipment	(686)	(633)
Proceeds from Sale of Trust Investments	501	662
Purchase of Trust Investments	510	660
Proceeds from Sales of Long-Lived Assets and Lease Investments	1,890	0
Other	(12)	7
Net Cash Provided By (Used In) Investing Activities	1,183	(624)
CASH FLOWS FROM FINANCING ACTIVITIES
Net Change in Commercial Paper and Loans	(593)	(598)
Proceeds from Short-Term Loan	0	500
Repayments of Short-term Debt	(1,250)	(300)
Proceeds from Issuance of Other Long-term Debt	1,750	900
Redemption of Long-term Debt	0	(300)
Payments for Share Repurchase Program	(500)	0
Cash Dividends Paid on Common Stock	(271)	(258)
Other	(12)	(78)
Net Cash Provided By (Used In) Financing Activities	(876)	(134)
Net Increase (Decrease) In Cash, Cash Equivalents and Restricted Cash	779	269
Cash, Cash Equivalents and Restricted Cash at Beginning of Period	863	572
Cash, Cash Equivalents and Restricted Cash at End of Period	1,642	841
Supplemental Disclosure of Cash Flow Information:
Income Taxes Paid (Received)	0	(25)
Interest Paid, Net of Amounts Capitalized	115	95
Accrued Property, Plant and Equipment Expenditures	295	258
Public Service Electric and Gas Company [Member]
CASH FLOWS FROM OPERATING ACTIVITIES
Net Income	509	477
Adjustments to Reconcile Net Income to Net Cash Flows from Operating Activities:
Depreciation and Amortization	241	241
Provision for Deferred Income Taxes and ITC	41	32
Non-Cash Employee Benefit Plan (Credits) Costs	(45)	(39)
Payments for Removal Costs	(30)	(27)
Net Change in Regulatory Assets and Liabilities	(122)	(28)
Net Change in Certain Current Assets and Liabilities:
Accounts Receivable and Unbilled Revenues	(120)	(39)
Fuel, Materials and Supplies	(13)	(3)
Prepayments	(5)	(8)
Obligation to Return Cash Collateral	205	(4)
Accounts Payable	(26)	(99)
Accounts Receivable/Payable-Affiliated Companies, net	86	9
Other Current Assets and Liabilities	44	39
Employee Benefit Plan Funding and Related Payments	(3)	0
Other	26	33
Net Cash Provided By (Used In) Operating Activities	736	518
CASH FLOWS FROM INVESTING ACTIVITIES
Additions to Property, Plant and Equipment	(628)	(586)
Proceeds from Sale of Trust Investments	5	16
Purchase of Trust Investments	4	10
Solar Loan Investments	4	2
Other	2	4
Net Cash Provided By (Used In) Investing Activities	(621)	(574)
CASH FLOWS FROM FINANCING ACTIVITIES
Net Change in Commercial Paper and Loans	0	(100)
Proceeds from Issuance of Other Long-term Debt	500	900
Redemption of Long-term Debt	0	(300)
Other	(5)	(8)
Net Cash Provided By (Used In) Financing Activities	495	492
Net Increase (Decrease) In Cash, Cash Equivalents and Restricted Cash	610	436
Cash, Cash Equivalents and Restricted Cash at Beginning of Period	339	233
Cash, Cash Equivalents and Restricted Cash at End of Period	949	669
Supplemental Disclosure of Cash Flow Information:
Income Taxes Paid (Received)	0	51
Interest Paid, Net of Amounts Capitalized	95	81
Accrued Property, Plant and Equipment Expenditures	$ 245	$ 218