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Commitments and Contingent Liabilities - Environmental Matters - Additional Information (Details)
$ in Millions
Dec. 31, 2024
USD ($)
Plant
Dec. 31, 2023
USD ($)
Site Contingency [Line Items]    
Number of additional legal entities contacted by EPA in conjunction with Newark Bay study area contamination 21  
EPA estimated study costs for Hackensack River $ 55  
Public Service Electric and Gas Company [Member]    
Site Contingency [Line Items]    
Regulatory assets 6,641 $ 5,430
Passaic River Site Contingency [Member]    
Site Contingency [Line Items]    
Estimated Cleanup Costs EPA Preferred Method 2,300  
Accrual for Environmental Loss Contingencies $ 66  
Number Of Additional Potentially Responsible Parties Directed By New Jersey Department Of Environmental Protection To Arrange Damage Assessment For Lower Passaic River 56  
Passaic River Site Contingency [Member] | Public Service Electric and Gas Company [Member]    
Site Contingency [Line Items]    
Number of former generating electric station | Plant 1  
Accrual for Environmental Loss Contingencies $ 53  
Passaic River Site Contingency [Member] | PSEG Power    
Site Contingency [Line Items]    
Accrual for Environmental Loss Contingencies 13  
Mgp Remediation Site Contingency [Member] | Public Service Electric and Gas Company [Member]    
Site Contingency [Line Items]    
Remediation Liability Recorded As Other Current Liabilities 54  
Remediation Liability Recorded As Other Noncurrent Liabilities 156  
Regulatory assets 210  
Passaic River Site Upper 9 Miles    
Site Contingency [Line Items]    
Estimated Cleanup Costs EPA Preferred Method 550  
Passaic River proposed settlement other PRPs 150  
Minimum [Member] | Mgp Remediation Site Contingency [Member] | Public Service Electric and Gas Company [Member]    
Site Contingency [Line Items]    
Loss Contingency, Estimate of Possible Loss 210  
Accrual for Environmental Loss Contingencies $ 210  
Environmental Loss Contingency, Statement of Financial Position [Extensible Enumeration] Accrued Environmental Loss Contingencies, Noncurrent  
Maximum [Member] | Mgp Remediation Site Contingency [Member] | Public Service Electric and Gas Company [Member]    
Site Contingency [Line Items]    
Loss Contingency, Estimate of Possible Loss $ 234