Trust Investments (Proceeds From The Sales Of And The Net Realized Gains On Securities) (Detail) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Schedule of Trust Investments [Line Items]
Net Gains (Losses) on NDT Fund Investments		$ (265)	$ 194	$ 253
Nuclear Decommissioning Trust (NDT) Fund [Member]
Schedule of Trust Investments [Line Items]
Proceeds from sales	[1]	1,521	1,930	2,031
Gross Realized Gains		86	236	214
Gross Realized Losses		136	70	94
Net Realized Gains (Losses) on NDT Fund	[2]	(50)	166	120
Net Unrealized Gains (Losses) on Equity Securities		(205)	19	120
Impairment of Available-for-Sale Debt Securities	[3]	0	0	(3)
Net Gains (Losses) on NDT Fund Investments		(255)	185	237
Rabbi Trust [Member]
Schedule of Trust Investments [Line Items]
Proceeds from sales		65	170	203
Gross Realized Gains		5	16	19
Gross Realized Losses		9	8	6
Net Realized Gains (Losses) on NDT Fund	[4]	(4)	8	13
Net Unrealized Gains (Losses) on Equity Securities		(6)	1	3
Net Gains (Losses) on NDT Fund Investments		$ (10)	$ 9	$ 16

[1] Includes activity in accounts related to the liquidation of funds being transitioned within the trust.

[2] The cost of these securities was determined on the basis of specific identification.

[3] PSEG Power recognized an impairment of available-for-sale debt securities in 2020. PSEG Power’s policy is to sell all securities that are rated below investment grade.

[4] The cost of these securities was determined on the basis of specific identification.