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v3.19.2

Debt and Credit Facilities (Changes in Long-Term Debt) (Detail) - USD ($) $ in Millions | 6 Months Ended
--- | ---
Jun. 30, 2019 | Jun. 30, 2018
Debt Instrument [Line Items] |  |
Issuance of Long-term Debt | $ 1,500 | $ 1,400
Public Service Electric and Gas Company [Member] |  |
Debt Instrument [Line Items] |  |
Issuance of Long-term Debt | 750 | 700
PSEG Power [Member] |  |
Debt Instrument [Line Items] |  |
Issuance of Long-term Debt | 0 | $ 700
Senior Notes Two Point Eight Seven Five Percent due Two Thousand Twenty Four [Member] | PSEG [Member] |  |
Debt Instrument [Line Items] |  |
Issuance of Long-term Debt | $ 750 |
Debt Instrument, Interest Rate, Stated Percentage | 2.875% |
Term Loan maturing in 2019 [Member] | PSEG [Member] |  |
Debt Instrument [Line Items] |  |
Repayments of Long-term Debt | $ 350 |
Medium Term Notes Three Point Two Zero Percent due Two Thousand Twenty NIne [Member] | Public Service Electric and Gas Company [Member] |  |
Debt Instrument [Line Items] |  |
Issuance of Long-term Debt | $ 375 |
Debt Instrument, Interest Rate, Stated Percentage | 3.20% |
Medium Term Notes Three Point Eight Five Percent due Two Thousand Forty Nine [Member] | Public Service Electric and Gas Company [Member] |  |
Debt Instrument [Line Items] |  |
Issuance of Long-term Debt | $ 375 |
Debt Instrument, Interest Rate, Stated Percentage | 3.85% |
Medium Term Notes One Point Eight Percent Due In Two Thousand Nineteen [Member] [Domain] | Public Service Electric and Gas Company [Member] |  |
Debt Instrument [Line Items] |  |
Debt Instrument, Interest Rate, Stated Percentage | 1.80% |
Repayments of Long-term Debt | $ 250 |
Pollution Control Notes Floating Rate Due On Two Thousand Twenty Two [Member] | PSEG Power [Member] |  |
Debt Instrument [Line Items] |  |
Long-term Debt, Gross | $ 44 |

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- Definition 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. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (b)(1) -URI http://asc.fasb.org/extlink&oid=109500613&loc=SL6031897-161870 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(16)) -URI http://asc.fasb.org/extlink&oid=119400593&loc=d3e572229-122910 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -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 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 + Details
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