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Rate Filings - Additional Information (Details) - Public Service Electric and Gas Company [Member] | 1 Months Ended | 6 Months Ended
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Aug. 31, 2025 USD ($) | Jul. 31, 2025 USD ($) | Jun. 30, 2025 USD ($) | May 31, 2025 USD ($) | Apr. 30, 2025 USD ($) | Jan. 31, 2025 USD ($) | Jun. 30, 2025
Conservation Incentive Program [Member] |  |  |  |  |  |  |
Regulatory Assets And Liabilities [Line Items] |  |  |  |  |  |  |
Public utilities, approved rate increase (decrease), amount |  |  |  | $ 65,000,000 |  |  |
Public Utilities, Requested Rate Increase (Decrease), Amount |  |  |  | 97,000,000 |  |  |
Gas System Modernization Program II [Member] | Subsequent Event [Member] |  |  |  |  |  |  |
Regulatory Assets And Liabilities [Line Items] |  |  |  |  |  |  |
Public utilities, approved rate increase (decrease), amount |  | $ 49,000,000 |  |  |  |  |
Public Utilities, Requested Rate Increase (Decrease), Amount | $ 28,000,000 |  |  |  |  |  |
Remediation Adjustment Clause [Member] |  |  |  |  |  |  |
Regulatory Assets And Liabilities [Line Items] |  |  |  |  |  |  |
Public utilities, approved rate increase (decrease), amount |  |  |  |  |  | $ 56,000,000 |
Electric Green Program Recovery [Member] |  |  |  |  |  |  |
Regulatory Assets And Liabilities [Line Items] |  |  |  |  |  |  |
Public utilities, approved rate increase (decrease), amount |  |  |  | 54,000,000 |  |  |
Public Utilities, Requested Rate Increase (Decrease), Amount |  |  | $ 207,000,000 |  |  |  |
Gas Green Program Recovery [Member] |  |  |  |  |  |  |
Regulatory Assets And Liabilities [Line Items] |  |  |  |  |  |  |
Public utilities, approved rate increase (decrease), amount |  |  |  | $ 22,000,000 |  |  |
Public Utilities, Requested Rate Increase (Decrease), Amount |  |  | 24,000,000 |  |  |  |
Electric Generation/Capacity Cost Deferral [Member] |  |  |  |  |  |  |
Regulatory Assets And Liabilities [Line Items] |  |  |  |  |  |  |
Public utilities amount approved to provide credit to residential electric customers |  |  | 30 |  |  |  |
Public utilities amount charged to residential electric customers |  |  | 10 |  |  |  |
Public utilities approved to provide credit and charge to customers description |  |  |  |  |  |  | In June 2025, the BPU approved an Order authorizing PSE&G to provide a $30 credit to each residential electric customer’s monthly bill for the two-month period July through August 2025. For the six-month period September 2025 through February 2026, PSE&G will apply a charge to each residential electric customer’s monthly bill of $10.
Basic Gas Supply Service [Member] |  |  |  |  |  |  |
Regulatory Assets And Liabilities [Line Items] |  |  |  |  |  |  |
Approved BGSS rate per therm |  |  |  |  | 0.33 |  |
Requested to increase BGSS rate per therm |  |  |  | 0.36 |  |  |
Electric Infrastructure Advancement Program [Member] |  |  |  |  |  |  |
Regulatory Assets And Liabilities [Line Items] |  |  |  |  |  |  |
Public utilities, approved rate increase (decrease), amount |  |  |  |  | $ 6,000,000 |  |
Gas Infrastructure Advancement Program [Member] |  |  |  |  |  |  |
Regulatory Assets And Liabilities [Line Items] |  |  |  |  |  |  |
Public utilities, approved rate increase (decrease), amount |  |  |  |  | $ 3,000,000 |  |
Transmission [Member] |  |  |  |  |  |  |
Regulatory Assets And Liabilities [Line Items] |  |  |  |  |  |  |
Public utilities, approved rate increase (decrease), amount |  |  | $ 28,000,000 |  |  |  |

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