Debt and Credit Facilities (Long-Term Debt Maturities) (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Debt Instrument [Line Items]
Repayments in Next Twelve Months	$ 700
Repayments in Year Two	1,575
Repayments in Year Three	1,500
Repayments in Year Four	900
Repayments in Year Five	875
Thereafter	10,486
Long-term Debt	16,036
Public Service Electric and Gas Company
Debt Instrument [Line Items]
Repayments in Next Twelve Months	0
Repayments in Year Two	825
Repayments in Year Three	750
Repayments in Year Four	350
Repayments in Year Five	875
Thereafter	9,090
Long-term Debt	11,890	$ 10,999
PSEG [Member]
Debt Instrument [Line Items]
Repayments in Next Twelve Months	700
Repayments in Year Two	750
Repayments in Year Three	750
Repayments in Year Four	550
Repayments in Year Five	0
Thereafter	1,396
Long-term Debt	$ 4,146	$ 2,946

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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Amount of long-term debt payable, sinking fund requirement, and other securities issued that are redeemable by holder at fixed or determinable price and date, maturing after fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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