Debt and Credit Facilities (Fair Value of Debt) (Details) - USD ($) $ in Millions		Dec. 31, 2023		Dec. 31, 2022
Debt Instrument [Line Items]
Long-term Debt		$ 19,411
Long-term Debt, Carrying Value		19,284		$ 18,070
Long-term Debt, Fair Value	[1]	17,950		16,164
PSEG [Member]
Debt Instrument [Line Items]
Long-term Debt		4,396		4,146
Long-term Debt, Carrying Value	[1]	4,371		4,124
Long-term Debt, Fair Value	[1]	4,240		3,808
Public Service Electric and Gas Company
Debt Instrument [Line Items]
Long-term Debt		13,765		12,790
Long-term Debt, Carrying Value	[1]	13,663		12,696
Long-term Debt, Fair Value	[1]	12,460		11,106
PSEG Power LLC [Member]
Debt Instrument [Line Items]
Long-term Debt		1,250		1,250
Long-term Debt, Carrying Value		1,250	[2]	1,250
Long-term Debt, Fair Value		$ 1,250	[2]	$ 1,250

[1] Given that these bonds do not trade actively, the fair value amounts of taxable debt securities (primarily Level 2 measurements) are generally determined by a valuation model using market-based measurements that are processed through a rules-based pricing methodology. The fair value amounts above do not represent the price at which the outstanding debt may be called for redemption by each issuer under their respective debt agreements.

[2] Private term loan with book value approximating fair value (Level 2 measurement)