Debt and Credit Facilities - Schedule of Line of Credit Facilities (Details) $ in Millions	9 Months Ended
	Sep. 30, 2024 USD ($)
Debt Instrument [Line Items]
Total Facility	$ 3,825	[1]
Usage (B)	664	[1],[2]
Available Liquidity	3,161	[1]
PSEG [Member]
Debt Instrument [Line Items]
Total Facility	1,500
Usage (B)	561	[2]
Available Liquidity	939
Revolving Credit Facility [Member] | PSEG [Member]
Debt Instrument [Line Items]
Total Facility	1,500	[3]
Usage (B)	561	[2],[3]
Available Liquidity	$ 939	[3]
Expiration Date	Mar 2028	[3]
PSEG Power [Member]
Debt Instrument [Line Items]
Total Facility	$ 1,325
Usage (B)	82	[2]
Available Liquidity	1,243
PSEG Power [Member] | Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Total Facility	1,250	[3]
Usage (B)	37	[2]
Available Liquidity	$ 1,213	[3]
Expiration Date	Mar 2028	[3]
PSEG Power [Member] | Letter Of Credit Facilities expiring April 2026 [Member]
Debt Instrument [Line Items]
Total Facility	$ 75
Usage (B)	45	[2]
Available Liquidity	$ 30
Expiration Date	Apr 2026
Public Service Electric and Gas Company [Member]
Debt Instrument [Line Items]
Total Facility	$ 1,000
Usage (B)	21	[2]
Available Liquidity	979
Public Service Electric and Gas Company [Member] | Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Total Facility	1,000
Usage (B)	21	[2]
Available Liquidity	$ 979
Expiration Date	Mar 2028

[1] Amounts do not include uncommitted credit facilities or 364-day term loans, if any apply.

[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 September 30, 2024, PSEG had $547 million outstanding commercial paper at a weighted average interest rate of 4.95% and PSE&G had no 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.