Schedule Of Consolidated Debt (Long-Term Debt Maturities) (Details) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Debt Instrument [Line Items]
Repayments in Next Twelve Months	$ 1,000
Repayments in Year Two	1,644
Repayments in Year Three	665
Repayments in Year Four	1,684
Repayments in Year Five	700
Thereafter	7,465
Long-term Debt	13,158
PSEG [Member]
Debt Instrument [Line Items]
Repayments in Next Twelve Months	0
Repayments in Year Two	1,100
Repayments in Year Three	0
Repayments in Year Four	300
Repayments in Year Five	700
Thereafter	0
Long-term Debt	2,100	$ 1,200
PSE&G
Debt Instrument [Line Items]
Repayments in Next Twelve Months	750
Repayments in Year Two	500
Repayments in Year Three	259
Repayments in Year Four	434
Repayments in Year Five	0
Thereafter	6,715
Long-term Debt	8,658	7,883
Power [Member]
Debt Instrument [Line Items]
Repayments in Next Twelve Months	250
Repayments in Year Two	44
Repayments in Year Three	406
Repayments in Year Four	950
Repayments in Year Five	0
Thereafter	750
Long-term Debt	$ 2,400	$ 2,400

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.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(22))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef
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-Section S99
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Reference 3: http://www.xbrl.org/2003/role/presentationRef
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Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing after the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 10
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6802200&loc=d3e1835-112601

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 3
-Subparagraph (SX 210.12-04.(a))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24072-122690

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