v3.26.1
Organization, Basis of Presentation and Significant Accounting Policies - Schedule of Cash, Cash Equivalents and Restricted Cash (Details) - USD ($)
$ in Millions
Mar. 31, 2026
Dec. 31, 2025
Mar. 31, 2025
Dec. 31, 2024
Organization, Basis of Presentation and Significant Accounting Policies [Line Items]        
Cash and Cash Equivalents $ 404 $ 132    
Restricted Cash in Other Current Assets 3 3    
Restricted Cash in Other Noncurrent Assets 21 21    
Cash, Cash Equivalents and Restricted Cash 428 156 $ 930 $ 154
Public Service Electric and Gas Company [Member]        
Organization, Basis of Presentation and Significant Accounting Policies [Line Items]        
Cash and Cash Equivalents 349 97    
Restricted Cash in Other Current Assets 3 3    
Restricted Cash in Other Noncurrent Assets 21 21    
Cash, Cash Equivalents and Restricted Cash 373 121 $ 587 $ 108
PSEG Power & Other [Member]        
Organization, Basis of Presentation and Significant Accounting Policies [Line Items]        
Cash and Cash Equivalents [1] 55 35    
Restricted Cash in Other Current Assets [1] 0 0    
Restricted Cash in Other Noncurrent Assets [1] 0 0    
Cash, Cash Equivalents and Restricted Cash [1] $ 55 $ 35    
[1] Includes amounts applicable to PSEG Power, Energy Holdings, Services and PSEG (parent company).