v3.26.1
Debt and Credit Facilities Debt - Short-Term Liquidity - Additional Information (Details) - USD ($)
$ in Millions
 1 Months Ended 3 Months Ended 12 Months Ended
Feb. 28, 2026
Dec. 31, 2025
Mar. 31, 2026
Mar. 31, 2025
Dec. 31, 2025
Debt Instrument [Line Items]          
Commitments of Single Institution as Percentage of Total Commitments     9.00%    
Line of Credit Facility, Remaining Borrowing Capacity [1]     $ 3,507    
Line of Credit Facility, Maximum Borrowing Capacity [1]     3,825    
Line of Credit Facility, Fair Value of Amount Outstanding [1],[2]     318    
Proceeds from Short-Term Loans     500 $ 0  
Public Service Electric and Gas Company [Member]          
Debt Instrument [Line Items]          
Line of Credit Facility, Remaining Borrowing Capacity     974    
Line of Credit Facility, Maximum Borrowing Capacity     1,000    
Line of Credit Facility, Fair Value of Amount Outstanding [2]     26    
PSEG Power [Member]          
Debt Instrument [Line Items]          
Line of Credit Facility, Remaining Borrowing Capacity     1,212    
Line of Credit Facility, Maximum Borrowing Capacity     1,325    
Line of Credit Facility, Fair Value of Amount Outstanding [2]     113    
Uncommitted Letter of Credit Facility [Member] | Public Service Electric and Gas Company [Member]          
Debt Instrument [Line Items]          
Line of Credit Facility, Maximum Borrowing Capacity     30    
Uncommitted Letter of Credit Facility [Member] | PSEG Power [Member]          
Debt Instrument [Line Items]          
Line of Credit Facility, Maximum Borrowing Capacity     425    
Line of Credit Facility, Fair Value of Amount Outstanding     190    
Revolving Credit Facility [Member]          
Debt Instrument [Line Items]          
Line of Credit Facility, Maximum Borrowing Capacity     3,750    
Revolving Credit Facility [Member] | Public Service Electric and Gas Company [Member]          
Debt Instrument [Line Items]          
Line of Credit Facility, Remaining Borrowing Capacity     974    
Line of Credit Facility, Maximum Borrowing Capacity     1,000    
Line of Credit Facility, Fair Value of Amount Outstanding [2]     26    
Revolving Credit Facility [Member] | PSEG Power [Member]          
Debt Instrument [Line Items]          
Line of Credit Facility, Remaining Borrowing Capacity [3]     1,192    
Line of Credit Facility, Maximum Borrowing Capacity [3]     1,250    
Line of Credit Facility, Fair Value of Amount Outstanding [3]     58    
Letter Of Credit Facilities Expiring March Two Thousand Twenty Eight [Member] | PSEG Power [Member]          
Debt Instrument [Line Items]          
Line of Credit Facility, Remaining Borrowing Capacity     20    
Line of Credit Facility, Maximum Borrowing Capacity     75    
Line of Credit Facility, Fair Value of Amount Outstanding [2]     $ 55    
December 2025 Term Loan [Member]          
Debt Instrument [Line Items]          
Proceeds from Short-Term Loans   $ 500     $ 400
Variable Rate Term Loan [Member]          
Debt Instrument [Line Items]          
Proceeds from Short-Term Loans $ 500        
[1] Amounts do not include uncommitted credit facilities or 364-day term loans, if any apply.
[2] The primary use of PSEG’s and PSE&G’s credit facilities is to support their respective Commercial Paper Programs, under which as of March 31, 2026, PSEG had $165 million commercial paper outstanding at a weighted average interest rate of 4.05% and PSE&G had no commercial paper outstanding.
[3] Master Credit Facility with sub-limits of $1.5 billion for PSEG and $1.25 billion for PSEG Power; sub-limits can be adjusted pursuant to the terms of the Master Credit Facility agreement.