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Trust Investments (Tables)
 12 Months Ended
Dec. 31, 2023
Nuclear Decommissioning Trust (NDT) Fund [Member]  
Schedule of Trust Investments [Line Items]  
Schedule of Securities Reconciliation
The following tables show the fair values and gross unrealized gains and losses for the securities held in the NDT Fund.
 As of December 31, 2023
 CostGross
Unrealized
Gains		Gross
Unrealized
Losses		Fair
Value
 Millions
Equity Securities
Domestic$482 $300 $(2)$780 
International423 118 (11)530 
Total Equity Securities905 418 (13)1,310 
Available-for-Sale Debt Securities
Government 759 4 (72)691 
Corporate555 6 (39)522 
Total Available-for-Sale Debt Securities1,314 10 (111)1,213 
Total NDT Fund Investments (A)$2,219 $428 $(124)$2,523 
    (A)    The NDT Fund Investments table excludes cash and foreign currency of $1 million as of December 31, 2023,
        which is part of the NDT Fund.
 As of December 31, 2022
 CostGross
Unrealized
Gains		Gross
Unrealized
Losses		Fair
Value
Millions
Equity Securities
Domestic$476 $232 $(12)$696 
International336 68 (28)376 
Total Equity Securities812 300 (40)1,072 
Available-for-Sale Debt Securities
Government 721 — (94)627 
Corporate597 1 (69)529 
Total Available-for-Sale Debt Securities1,318 1 (163)1,156 
Total NDT Fund Investments (A)$2,130 $301 $(203)$2,228 
(A)    The NDT Fund Investments table excludes cash and foreign currency of $2 million as of December 31, 2022, which is part of the NDT Fund.
Schedule Of Accounts Receivable And Accounts Payable
The amounts in the preceding tables do not include receivables and payables for NDT Fund transactions which have not settled at the end of each period. Such amounts are included in Accounts Receivable and Accounts Payable on the Consolidated Balance Sheets as shown in the following table.
As of December 31,
20232022
 Millions
Accounts Receivable$19 $14 
Accounts Payable$6 $6 
Fair Value of Securities, Unrealized Loss Position
The following table shows the value of securities in the NDT Fund that have been in an unrealized loss position for less than and greater than 12 months.
 As of December 31, 2023As of December 31, 2022
 Less Than 12
Months		Greater Than 12
Months		Less Than 12
Months		Greater Than 12
Months
 Fair
Value		Gross
Unrealized
Losses		Fair
Value		Gross
Unrealized
Losses		Fair
Value		Gross
Unrealized
Losses		Fair
Value		Gross
Unrealized
Losses
Millions
Equity Securities (A)
Domestic $44 $(1)$4 $— $90 $(10)$9 $(2)
International35 (4)28 (8)88 (12)38 (16)
Total Equity Securities79 (5)32 (8)178 (22)47 (18)
Available-for-Sale Debt Securities
Government (B)90 (1)432 (71)301 (27)292 (67)
Corporate (C)19 — 329 (39)221 (21)249 (48)
Total Available-for-Sale Debt Securities109 (1)761 (110)522 (48)541 (115)
NDT Trust Investments$188 $(6)$793 $(118)$700 $(70)$588 $(133)
(A)Equity Securities—Investments in marketable equity securities within the NDT Fund are primarily in common stocks within a broad range of industries and sectors. Unrealized gains and losses on these securities are recorded in Net Income.
(B)Debt Securities (Government)—Unrealized gains and losses on these securities are recorded in Accumulated Other Comprehensive Income (Loss). The unrealized losses on PSEG Power’s NDT investments in U.S. Treasury obligations and Federal Agency mortgage-backed securities were caused by interest rate changes. PSEG Power also has investments in municipal bonds. It is not expected that these securities will settle for less than their amortized cost. PSEG Power does not intend to sell these securities nor will it be more-likely-than-not required to sell before recovery of their amortized cost. PSEG Power did not recognize credit losses for U.S. Treasury obligations and Federal Agency mortgage-backed securities because these investments are guaranteed by the U.S. government or an agency of the U.S. government. PSEG Power did not recognize credit losses for municipal bonds because they are primarily investment grade securities.
(C)Debt Securities (Corporate)—Unrealized gains and losses on these securities are recorded in Accumulated Other Comprehensive Income (Loss). Unrealized losses were due to market declines. It is not expected that these securities would settle for less than their amortized cost. PSEG Power does not intend to sell these securities nor will it be more-likely-than-not required to sell before recovery of their amortized cost. PSEG Power did not recognize credit losses for corporate bonds because they are primarily investment grade securities.
Schedule of Realized Gain (Loss)
The proceeds from the sales of and the net gains (losses) on securities in the NDT Fund were:
 Years Ended December 31,
 202320222021
 Millions
Proceeds from Sales (A)$1,685 $1,521 $1,930 
Net Realized Gains (Losses):
Gross Realized Gains$142 $86 $236 
Gross Realized Losses(100)(136)(70)
Net Realized Gains (Losses) on NDT Fund (B)42 (50)166 
Net Unrealized Gains (Losses) on Equity Securities146 (205)19 
Net Gains (Losses) on NDT Fund Investments $188 $(255)$185 
(A)Includes activity in accounts related to the liquidation of funds being transitioned within the trust.
(B)The cost of these securities was determined on the basis of specific identification.
Amount Of Available-For-Sale Debt Securities By Maturity Periods
The NDT Fund debt securities held as of December 31, 2023 had the following maturities:
Time FrameFair Value
 Millions
Less than one year$17 
1 - 5 years314 
6 - 10 years214 
11 - 15 years62 
16 - 20 years101 
Over 20 years505 
Total NDT Available-for-Sale Debt Securities$1,213 
 
Rabbi Trust [Member]  
Schedule of Trust Investments [Line Items]  
Schedule of Securities Reconciliation
 As of December 31, 2023
 CostGross
Unrealized
Gains		Gross
Unrealized
Losses		Fair
Value
 Millions
Domestic Equity Securities$10 $8 $— $18 
Available-for-Sale Debt Securities
  Government 110 — (19)91 
  Corporate80 — (10)70 
Total Available-for-Sale Debt Securities190 — (29)161 
Total Rabbi Trust Investments$200 $8 $(29)$179 
 As of December 31, 2022
 CostGross
Unrealized
Gains		Gross
Unrealized
Losses		Fair
Value
Millions
Domestic Equity Securities$14 $6 $— $20 
Available-for-Sale Debt Securities
  Government 110 — (21)89 
  Corporate89 — (15)74 
Total Available-for-Sale Debt Securities199 — (36)163 
Total Rabbi Trust Investments$213 $6 $(36)$183 
Schedule Of Accounts Receivable And Accounts Payable
The amounts in the preceding tables do not include receivables and payables for Rabbi Trust Fund transactions which have not settled at the end of each period. Such amounts are included in Accounts Receivable and Accounts Payable on the Consolidated Balance Sheets as shown in the following table.
As of December 31,
20232022
 Millions
Accounts Receivable$1 $1 
Accounts Payable$— $— 
Fair Value of Securities, Unrealized Loss Position
The following table shows the value of securities in the Rabbi Trust Fund that have been in an unrealized loss position for less than and greater than 12 months:
 As of December 31, 2023As of December 31, 2022
 Less Than 12
Months		Greater Than 12
Months		Less Than 12
Months		Greater Than 12
Months
 Fair
Value		Gross
Unrealized
Losses		Fair
Value		Gross
Unrealized
Losses		Fair
Value		Gross
Unrealized
Losses		Fair
Value		Gross
Unrealized
Losses
Millions
Available-for-Sale Debt Securities
Government (A)$3 $— $83 $(19)$32 $(5)$57 $(16)
Corporate (B)3 — 60 (10)35 (5)39 (10)
Total Available-for-Sale Debt Securities6 — 143 (29)67 (10)96 (26)
Rabbi Trust Investments$6 $— $143 $(29)$67 $(10)$96 $(26)
(A)Debt Securities (Government)—Unrealized gains and losses on these securities are recorded in Accumulated Other Comprehensive Income (Loss). The unrealized losses on PSEG’s Rabbi Trust investments in U.S. Treasury obligations and Federal Agency mortgage-backed securities were caused by interest rate changes. PSEG also has investments in municipal bonds. It is not expected that these securities will settle for less than their amortized cost. PSEG does not intend to sell these securities nor will it be more-likely-than-not required to sell before recovery of their amortized cost. PSEG did not recognize credit losses for U.S. Treasury obligations and Federal Agency mortgage-backed securities because these investments are guaranteed by the U.S. government or an agency of the U.S. government. PSEG did not recognize credit losses for municipal bonds because they are primarily investment grade securities.
(B)Debt Securities (Corporate)—Unrealized gains and losses on these securities are recorded in Accumulated Other Comprehensive Income (Loss). Unrealized losses were due to market declines. It is not expected that these securities would settle for less than their amortized cost. PSEG does not intend to sell these securities nor will it be more-likely-than-not required to sell before recovery of their amortized cost. PSEG did not recognize credit losses for corporate bonds because they are primarily investment grade.
Schedule of Realized Gain (Loss)
The proceeds from the sales of and the net gains (losses) on securities in the Rabbi Trust Fund were:
 Years Ended December 31,
 202320222021
 Millions
Proceeds from Rabbi Trust Sales $29 $65 $170 
Net Realized Gains (Losses):
Gross Realized Gains $5 $5 $16 
Gross Realized Losses (6)(9)(8)
Net Realized Gains (Losses) on Rabbi Trust (A)(1)(4)8 
Net Unrealized Gains (Losses) on Equity Securities 2 (6)1 
Net Gains (Losses) on Rabbi Trust Investments $1 $(10)$9 
(A)The cost of these securities was determined on the basis of specific identification.
Amount Of Available-For-Sale Debt Securities By Maturity Periods
The Rabbi Trust debt securities held as of December 31, 2023 had the following maturities:
Time FrameFair Value
 Millions
Less than one year$8 
1 - 5 years27 
6 - 10 years16 
11 - 15 years10 
16 - 20 years20 
Over 20 years80 
Total Rabbi Trust Available-for-Sale Debt Securities$161 
 
Rabbi Trust Fair Value by Company The fair value of the Rabbi Trust related to PSEG and PSE&G are detailed as follows:
As of December 31,As of December 31,
20232022
 Millions
PSE&G$32 $32 
PSEG Power & Other147 151 
Total Rabbi Trust Investments$179 $183