Debt and Credit Facilities (Fair Value of Debt) (Details) - USD ($) $ in Millions		Dec. 31, 2022		Dec. 31, 2021
Debt Instrument [Line Items]
Long-term Debt		$ 18,186
Long-term Debt, Carrying Value		18,070		$ 15,919
Long-term Debt, Fair Value	[1]	16,164		17,546
PSEG [Member]
Debt Instrument [Line Items]
Long-term Debt		4,146		4,146
Long-term Debt, Carrying Value	[1]	4,124		4,124
Long-term Debt, Fair Value	[1]	3,808		4,172
Public Service Electric and Gas Company
Debt Instrument [Line Items]
Long-term Debt		12,790		11,890
Long-term Debt, Carrying Value	[1]	12,696		11,795
Long-term Debt, Fair Value	[1]	11,106		13,374
PSEG Power LLC [Member]
Debt Instrument [Line Items]
Long-term Debt		1,250		0
Long-term Debt, Carrying Value		1,250	[2]	0
Long-term Debt, Fair Value		$ 1,250	[2]	$ 0

[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)