XML 112 R90.htm IDEA: XBRL DOCUMENT
v3.10.0.1

Accumulated Other Comprehensive Income (Loss), Net of Tax (Changes of AOCI) (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended | 12 Months Ended |
--- | --- | --- | --- | ---
Sep. 30, 2018 | Jun. 30, 2018 | Sep. 30, 2017 | Sep. 30, 2018 | Sep. 30, 2017 | Dec. 31, 2017 | Jan. 01, 2018
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |  |  |  |  |
Cumulative Effect of New Accounting Principle in Period of Adoption |  |  |  |  |  |  | $ (176)
Accumulated Other Comprehensive Income (Loss) [Roll Forward] |  |  |  |  |  |  |
Accumulated Other Comprehensive Income (Loss), Beginning Balance | $ (410) |  | $ (226) | $ (229) | $ (263) | $ (263) |
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax | (6) |  | 25 | (29) | 78 |  |
Amounts Reclassified from Accumulated Other Comprehensive Income (Loss) | 9 |  | (3) | 27 | (19) |  |
Other Comprehensive Income (Loss), net of tax | 3 |  | 22 | (2) | 59 |  |
Accumulated Other Comprehensive Income (Loss), Ending Balance | (407) | $ (410) | (204) | (407) | (204) | (229) |
Net Change in Accumulated Other Comprehensive Income |  |  |  | (178) |  |  |
Cash Flow Hedges [Member] |  |  |  |  |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |  |  |  |  |
Cumulative Effect of New Accounting Principle in Period of Adoption |  |  |  |  |  |  | 0
Accumulated Other Comprehensive Income (Loss) [Roll Forward] |  |  |  |  |  |  |
Accumulated Other Comprehensive Income (Loss), Beginning Balance | (1) |  | 2 | 0 | 2 | 2 |
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax | 0 | (1) | 0 | (1) | 0 | 0 |
Amounts Reclassified from Accumulated Other Comprehensive Income (Loss) | 0 |  | (1) | 0 | (1) | (2) |
Other Comprehensive Income (Loss), net of tax | 0 |  | (1) | (1) | (1) |  |
Accumulated Other Comprehensive Income (Loss), Ending Balance | (1) | (1) | 1 | (1) | 1 | 0 |
Net Change in Accumulated Other Comprehensive Income |  |  |  | (1) |  |  |
Pension and OPEB Plans [Member] |  |  |  |  |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |  |  |  |  |
Cumulative Effect of New Accounting Principle in Period of Adoption |  |  |  |  |  |  | 0
Accumulated Other Comprehensive Income (Loss) [Roll Forward] |  |  |  |  |  |  |
Accumulated Other Comprehensive Income (Loss), Beginning Balance | (391) |  | (386) | (406) | (398) | (398) |
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax | 0 |  | 0 | 0 | 0 |  |
Amounts Reclassified from Accumulated Other Comprehensive Income (Loss) | 7 |  | 6 | 22 | 18 |  |
Other Comprehensive Income (Loss), net of tax | 7 |  | 6 | 22 | 18 |  |
Accumulated Other Comprehensive Income (Loss), Ending Balance | (384) | (391) | (380) | (384) | (380) | (406) |
Net Change in Accumulated Other Comprehensive Income |  |  |  | 22 |  |  |
Available-for-Sale Securities [Member] |  |  |  |  |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |  |  |  |  |
Cumulative Effect of New Accounting Principle in Period of Adoption |  |  |  |  |  |  | (176)
Accumulated Other Comprehensive Income (Loss) [Roll Forward] |  |  |  |  |  |  |
Accumulated Other Comprehensive Income (Loss), Beginning Balance | (18) |  | 158 | 177 | 133 | 133 |
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax | (6) |  | 25 | (28) | 78 |  |
Amounts Reclassified from Accumulated Other Comprehensive Income (Loss) | 2 |  | (8) | 5 | (36) |  |
Other Comprehensive Income (Loss), net of tax | (4) |  | 17 | (23) | 42 |  |
Accumulated Other Comprehensive Income (Loss), Ending Balance | (22) | (18) | 175 | (22) | 175 | 177 |
Net Change in Accumulated Other Comprehensive Income |  |  |  | (199) |  |  |
Power [Member] |  |  |  |  |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |  |  |  |  |
Cumulative Effect of New Accounting Principle in Period of Adoption |  |  |  |  |  |  | (175)
Accumulated Other Comprehensive Income (Loss) [Roll Forward] |  |  |  |  |  |  |
Accumulated Other Comprehensive Income (Loss), Beginning Balance | (350) |  | (172) | (172) | (211) | (211) |
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax | (5) |  | 24 | (23) | 74 |  |
Amounts Reclassified from Accumulated Other Comprehensive Income (Loss) | 8 |  | (4) | 23 | (15) |  |
Other Comprehensive Income (Loss), net of tax | 3 |  | 20 | 0 | 59 |  |
Accumulated Other Comprehensive Income (Loss), Ending Balance | (347) | (350) | (152) | (347) | (152) | (172) |
Net Change in Accumulated Other Comprehensive Income |  |  |  | (175) |  |  |
Power [Member] | Cash Flow Hedges [Member] |  |  |  |  |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |  |  |  |  |
Cumulative Effect of New Accounting Principle in Period of Adoption |  |  |  |  |  |  | 0
Accumulated Other Comprehensive Income (Loss) [Roll Forward] |  |  |  |  |  |  |
Accumulated Other Comprehensive Income (Loss), Beginning Balance | 0 |  | 0 | 0 | 0 | 0 |
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax | 0 |  | 0 | 0 | 0 |  |
Amounts Reclassified from Accumulated Other Comprehensive Income (Loss) | 0 |  | 0 | 0 | 0 |  |
Other Comprehensive Income (Loss), net of tax | 0 |  | 0 | 0 | 0 |  |
Accumulated Other Comprehensive Income (Loss), Ending Balance | 0 | 0 | 0 | 0 | 0 | 0 |
Net Change in Accumulated Other Comprehensive Income |  |  |  | 0 |  |  |
Power [Member] | Pension and OPEB Plans [Member] |  |  |  |  |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |  |  |  |  |
Cumulative Effect of New Accounting Principle in Period of Adoption |  |  |  |  |  |  | 0
Accumulated Other Comprehensive Income (Loss) [Roll Forward] |  |  |  |  |  |  |
Accumulated Other Comprehensive Income (Loss), Beginning Balance | (335) |  | (330) | (347) | (340) | (340) |
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax | 0 |  | 0 | 0 | 0 |  |
Amounts Reclassified from Accumulated Other Comprehensive Income (Loss) | 7 |  | 5 | 19 | 15 |  |
Other Comprehensive Income (Loss), net of tax | 7 |  | 5 | 19 | 15 |  |
Accumulated Other Comprehensive Income (Loss), Ending Balance | (328) | (335) | (325) | (328) | (325) | (347) |
Net Change in Accumulated Other Comprehensive Income |  |  |  | 19 |  |  |
Power [Member] | Available-for-Sale Securities [Member] |  |  |  |  |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |  |  |  |  |
Cumulative Effect of New Accounting Principle in Period of Adoption |  |  |  |  |  |  | $ (175)
Accumulated Other Comprehensive Income (Loss) [Roll Forward] |  |  |  |  |  |  |
Accumulated Other Comprehensive Income (Loss), Beginning Balance | (15) |  | 158 | 175 | 129 | 129 |
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax | (5) |  | 24 | (23) | 74 |  |
Amounts Reclassified from Accumulated Other Comprehensive Income (Loss) | 1 |  | (9) | 4 | (30) |  |
Other Comprehensive Income (Loss), net of tax | (4) |  | 15 | (19) | 44 |  |
Accumulated Other Comprehensive Income (Loss), Ending Balance | $ (19) | $ (15) | $ 173 | (19) | $ 173 | $ 175 |
Net Change in Accumulated Other Comprehensive Income |  |  |  | $ (194) |  |  |

X
- Definition Accumulated Other Comprehensive Income (Loss) [Roll Forward] + References No definition available. + Details
Name: | pseg_AccumulatedOtherComprehensiveIncomeLossRollForward
Namespace Prefix: | pseg_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Net Change in Accumulated Other Comprehensive Income + References No definition available. + Details
Name: | pseg_NetChangeinAccumulatedOtherComprehensiveIncome
Namespace Prefix: | pseg_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Accumulated change in equity from transactions and other events and circumstances from non-owner sources, net of tax effect, at period end. Excludes Net Income (Loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners. Includes foreign currency translation items, certain pension adjustments, unrealized gains and losses on certain investments in debt and equity securities, other than temporary impairment (OTTI) losses related to factors other than credit losses on available-for-sale and held-to-maturity debt securities that an entity does not intend to sell and it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis, as well as changes in the fair value of derivatives related to the effective portion of a designated cash flow hedge. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=84228862&loc=d3e637-108580 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14 -URI http://asc.fasb.org/extlink&oid=84228862&loc=d3e681-108580 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=84228862&loc=SL7669686-108580 + Details
Name: | us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount after tax of increase (decrease) to equity or (increase) decrease to net assets, resulting from the cumulative effect adjustment of a new accounting principle applied in the period of adoption. + References No definition available. + Details
Name: | us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount after tax, before reclassification adjustments of other comprehensive income (loss). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 55 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=84158357&loc=d3e1436-108581 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=84228862&loc=SL7669686-108580 + Details
Name: | us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount after tax and reclassification adjustments of other comprehensive income (loss). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=84159872&loc=d3e21463-112644 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 1A -URI http://asc.fasb.org/extlink&oid=84228862&loc=SL7669619-108580 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 1B -URI http://asc.fasb.org/extlink&oid=84228862&loc=SL7669625-108580 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 55 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=84158357&loc=d3e1436-108581 + Details
Name: | us-gaap_OtherComprehensiveIncomeLossNetOfTax
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount after tax of reclassification adjustments of other comprehensive income (loss). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=84228862&loc=SL7669686-108580 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 55 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=84158357&loc=d3e1436-108581 + Details
Name: | us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | us-gaap_StatementEquityComponentsAxis=us-gaap_AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedgesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementEquityComponentsAxis=us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementEquityComponentsAxis=us-gaap_AccumulatedNetUnrealizedInvestmentGainLossMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=pseg_PowerMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |