Commitments and Contingent Liabilities - Basic Generation Service (BGS), Basic Gas Supply Service (BGSS) and Zero Emission Certificates (ZECs) - Additional Information (Details) Cf in Billions	9 Months Ended
	Sep. 30, 2024 USD ($) Cf $ / MWd
Long-term Purchase Commitment [Line Items]
Number of cubic feet in gas hedging permitted to be recovered by BPU | Cf	115
Percentage of residential gas supply permitted to be recovered in gas hedging by BPU	80.00%
Number Of Cubic Feet To Be Hedged | Cf	70
Percentage of annual residential gas supply requirements to be hedged	50.00%
Public Service Electric and Gas Company [Member]
Long-term Purchase Commitment [Line Items]
ZEC Charge per kwh | $	$ 0.004
Public Service Electric and Gas Company [Member] | Auction Year 2023
Long-term Purchase Commitment [Line Items]
Dollars Per Megawatt-Day | $ / MWd	330.72
Public Service Electric and Gas Company [Member] | Auction Year 2024
Long-term Purchase Commitment [Line Items]
Dollars Per Megawatt-Day | $ / MWd	378.21