Income Taxes - Schedule Of Unrecognized Tax Benefits (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Unrecognized Tax Benefits [Roll Forward]
Unrecognized Tax Benefits, Beginning Balance	$ 110	$ 130	$ 192
Increases as a Result of Positions Taken in a Prior Period	18	16	9
Decreases as a Result of Positions Taken in a Prior Period	(4)	(25)	(40)
Increases as a Result of Positions Taken during the Current Period	90	0	1
Decreases as a Result of Positions Taken during the Current Period	0	0	0
Decreases as a Result of Settlements with Taxing Authorities	(4)	(10)	(28)
Decreases due to Lapses of Applicable Statute of Limitations	(1)	(1)	(4)
Unrecognized Tax Benefits, Ending Balance	209	110	130
Accumulated Deferred Income Taxes Associated with Unrecognized Tax Benefits	(30)	(29)	(37)
Regulatory Asset-Unrecognized Tax Benefits	(1)	(2)	(8)
Total Amount of Unrecognized Tax Benefits that if Recognized, would Impact the Effective Tax Rate (including Interest and Penalties)	178	79	85
Public Service Electric and Gas Company
Unrecognized Tax Benefits [Roll Forward]
Unrecognized Tax Benefits, Beginning Balance	11	29	27
Increases as a Result of Positions Taken in a Prior Period	0	2	2
Decreases as a Result of Positions Taken in a Prior Period	(3)	(12)	(2)
Increases as a Result of Positions Taken during the Current Period	1	0	1
Decreases as a Result of Positions Taken during the Current Period	0	0	0
Decreases as a Result of Settlements with Taxing Authorities	0	(7)	0
Decreases due to Lapses of Applicable Statute of Limitations	(1)	(1)
Unrecognized Tax Benefit, Increase Resulting from			1
Unrecognized Tax Benefits, Ending Balance	8	11	29
Accumulated Deferred Income Taxes Associated with Unrecognized Tax Benefits	(5)	(7)	(15)
Regulatory Asset-Unrecognized Tax Benefits	(1)	(2)	(8)
Total Amount of Unrecognized Tax Benefits that if Recognized, would Impact the Effective Tax Rate (including Interest and Penalties)	$ 2	$ 2	$ 6