Debt and Credit Facilities Debt and Credit Facilities (Short-Term Liquidity) (Details) - USD ($) $ in Millions		1 Months Ended		3 Months Ended
		Apr. 30, 2023	Apr. 30, 2022	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022
Commercial Paper				$ 1,250		$ 2,200
Commitments of Single Institution as Percentage of Total Commitments				10.00%
Line of Credit Facility, Remaining Borrowing Capacity	[1]			$ 3,931
Line of Credit Facility, Maximum Borrowing Capacity	[1]			4,150
Line of Credit Facility, Fair Value of Amount Outstanding	[1],[2]			219
Repayments of Short-term Debt				750	$ 1,250
Collateral Already Posted, Aggregate Fair Value				727		$ 1,521
Net Change in Commercial Paper and Loans				(200)	$ (593)
Public Service Electric and Gas Company [Member]
Line of Credit Facility, Remaining Borrowing Capacity				982
Line of Credit Facility, Maximum Borrowing Capacity				1,000
Line of Credit Facility, Fair Value of Amount Outstanding				18
PSEG Power [Member]
Line of Credit Facility, Remaining Borrowing Capacity				1,451
Line of Credit Facility, Maximum Borrowing Capacity				1,650
Line of Credit Facility, Fair Value of Amount Outstanding				199
Five Year Credit Facility Maturing March 2023 [Member] | Public Service Electric and Gas Company [Member]
Line of Credit Facility, Remaining Borrowing Capacity				$ 982
Debt Instrument, Maturity Date, Description				Mar 2027
Line of Credit Facility, Maximum Borrowing Capacity				$ 1,000
Line of Credit Facility, Fair Value of Amount Outstanding	[2]			18
Five Year Credit Facility Maturing March 2023 [Member] | PSEG Power [Member]
Line of Credit Facility, Remaining Borrowing Capacity				$ 1,211
Debt Instrument, Maturity Date, Description				Mar 2027
Line of Credit Facility, Maximum Borrowing Capacity	[3]			$ 1,250
Line of Credit Facility, Fair Value of Amount Outstanding				39
Letter of Credit Facilities expiring April 2024 | PSEG Power [Member]
Line of Credit Facility, Remaining Borrowing Capacity				$ 34
Debt Instrument, Maturity Date, Description				Apr 2024
Line of Credit Facility, Maximum Borrowing Capacity				$ 100
Line of Credit Facility, Fair Value of Amount Outstanding				66
Letter of Credit Facilities expiring April 2025 | PSEG Power [Member]
Line of Credit Facility, Remaining Borrowing Capacity				$ 106
Debt Instrument, Maturity Date, Description				Sept 2024
Line of Credit Facility, Maximum Borrowing Capacity				$ 200
Line of Credit Facility, Fair Value of Amount Outstanding				94
Letter of Credit Facilities expiring September 2024 | PSEG Power [Member]
Line of Credit Facility, Remaining Borrowing Capacity				$ 100
Debt Instrument, Maturity Date, Description				Apr 2025
Line of Credit Facility, Maximum Borrowing Capacity				$ 100
Line of Credit Facility, Fair Value of Amount Outstanding				0
Uncommitted Letter of Credit Facility | PSEG Power [Member]
Line of Credit Facility, Maximum Borrowing Capacity				150
April 2022 Term Loan
Proceeds from Short-Term Loan			$ 1,500
Repayments of Short-term Debt				750
April 2022 Term Loan | Subsequent Event [Member]
Repayments of Short-term Debt		$ 750
April 2023 Term Loan | Subsequent Event [Member]
Proceeds from Short-Term Loan		$ 750
PSEG [Member]
Line of Credit Facility, Remaining Borrowing Capacity				1,498
Line of Credit Facility, Maximum Borrowing Capacity				1,500
Line of Credit Facility, Fair Value of Amount Outstanding				2
PSEG [Member] | Five Year Credit Facility Maturing March 2023 [Member]
Line of Credit Facility, Remaining Borrowing Capacity				$ 1,498
Debt Instrument, Maturity Date, Description				Mar 2027
Line of Credit Facility, Maximum Borrowing Capacity	[3]			$ 1,500
Line of Credit Facility, Fair Value of Amount Outstanding	[2]			$ 2

[1] Amounts do not include uncommitted credit facilities.

[2] The primary use of PSEG’s and PSE&G’s credit facilities is to support their respective Commercial Paper Programs, under which as of March 31, 2023, neither PSEG nor PSE&G had any Commercial Paper outstanding.

[3] Master Credit Facility with sub-limits of $1.5 billion for PSEG and $1.25 billion for PSEG Power; sub-limits can be adjusted pursuant to the terms of the Master Credit Facility agreement. The PSEG sub-limit includes a sustainability linked pricing based mechanism with potential increases or decreases, which are not expected to be material, depending on performance relative to targeted methane emission reductions.