Text Block [Abstract] Statement [Table] Statement [Table] Legal Entity [Axis] Legal Entity [Axis] Entity [Domain] Entity [Domain] Power [Member] Power [Member] Power [Member] PSE And G [Member] Pse And G [Member] PSE and G [Member] Statement [Line Items] Statement [Line Items] Basis of Presentation Basis of Accounting, Policy [Policy Text Block] Disclosure Fair Value Measurements Schedule Of Quantitative Information About Level 3 Fair Value Measurements [Abstract] Disclosure - Fair Value Measurements (Schedule Of Quantitative Information About Level 3 Fair Value Measurements) [Abstract] Fair Value Measurements, Recurring and Nonrecurring [Table] Fair Value Measurements, Recurring and Nonrecurring [Table] Range [Axis] Range [Axis] Range [Domain] Range [Domain] Minimum [Member] Minimum [Member] Maximum [Member] Maximum [Member] Measurement Units [Axis] Measurement Units [Axis] Measurement Units [Axis] Measurement Units [Domain] Measurement Units [Domain] Measurement Units [Domain] MMBTU [Member] Mmbtu [Member] MMBTU MW-Day [Member] Megawatt Day [Member] Megawatt Day [Member] Dekatherm [Member] Dekatherm [Member] Dekatherm [Member] MWh [Member] Megawatt Hours [Member] Megawatt Hours Measurement Frequency [Axis] Measurement Frequency [Axis] Fair Value, Measurement Frequency [Domain] Fair Value, Measurement Frequency [Domain] Long-Term Gas Supply [Member] Long Term Gas Supply [Member] Long-Term Gas Supply [Member] Long Term Electric Capacity [Member] Long Term Electric Capacity [Member] Long-Term Electric Capacity [Member] Electric Swaps [Member] Electric Swaps [Member] Electric Swaps [Member] Electric Load Deals [Member] Electric Load Deals [Member] Electric Load Deals [Member] Various [Member] Various [Member] Various [Member] Forward Contracts [Member] Forward Contracts [Member] PSEG [Member] Parent Company [Member] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Assets, Fair Value Assets, Fair Value Disclosure Liabilities, Fair Value Liabilities, Fair Value Disclosure Valuation Technique (s) Fair Value Measurements, Valuation Techniques Significant Unobservable Inputs Fair Value Measurement With Significant Unobservable Inputs Fair value, measurement with significant unobservable inputs Power Basis Range Power Basis Range Power basis range Historic Load Variability Historic Load Variability Historic Load Variability Longer-Term Basis Range Longer Term Basis Range Longer-Term Basis Range Forecasted capacity prices Forecasted Capacity Prices Range Forecasted Capacity Prices Range Disclosure Financial Risk Management Activities Schedule Of Derivative Instruments Fair Value In Balance Sheets [Abstract] Disclosure - Financial Risk Management Activities (Schedule Of Derivative Instruments Fair Value In Balance Sheets) [Abstract] Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] Balance Sheet Location [Axis] Balance Sheet Location [Axis] Balance Sheet Location [Domain] Balance Sheet Location [Domain] Current Assets [Member] Current Assets [Member] Current Assets [Member] Non Current Assets [Member] Non Current Assets [Member] Noncurrent Assets [Member] Current Liabilities [Member] Current Liabilities [Member] Current Liabilities [Member] Hedging Designation [Axis] Hedging Designation [Axis] Hedging Designation [Domain] Hedging Designation [Domain] Not Designated as Hedging Instrument [Member] Not Designated as Hedging Instrument [Member] Derivative Instrument Risk [Axis] Derivative Instrument Risk [Axis] Derivative Contract Type [Domain] Derivative Contract Type [Domain] Energy-Related Contracts [Member] Energy Related Contracts [Member] Energy Related Contracts Member Interest Rate Swap [Member] Interest Rate Swap [Member] Hedging Relationship [Axis] Hedging Relationship [Axis] Hedging Relationship [Domain] Hedging Relationship [Domain] Cash Flow Hedging [Member] Cash Flow Hedging [Member] Netting [Member] Net Investment Hedging [Member] Fair Value Hedging [Member] Fair Value Hedging [Member] Derivatives, Fair Value [Line Items] Derivatives, Fair Value [Line Items] Derivative Contracts, Current Assets Derivative Assets, Current Derivative Contracts, Noncurrent Assets Derivative Assets, Noncurrent Total Mark-to-Market Derivative Assets Derivative Assets Derivative Contracts, Current Liabilities Derivative Liabilities, Current Derivative Contracts, Noncurrent Liabilities Derivative Liabilities, Noncurrent Total Mark-to-Market Derivative (Liabilities) Derivative Liabilities Net Mark-to-Market Derivative Assets (Liabilities) Derivative, Fair Value, Net Net cash collateral received in connection with net derivative contracts Derivative, Fair Value, Amount Offset Against Collateral, Net Disclosure Available For Sale Securities Schedule Of Accounts Receivable And Accounts Payable [Abstract] Disclosure - Available-For-Sale Securities (Schedule Of Accounts Receivable And Accounts Payable) [Abstract] Major Types of Debt and Equity Securities [Axis] Major Types of Debt and Equity Securities [Axis] Major Types of Debt and Equity Securities [Domain] Major Types of Debt and Equity Securities [Domain] Government Obligations [Member] US States and Political Subdivisions Debt Securities [Member] Scenario [Axis] Scenario [Axis] Scenario, Unspecified [Domain] Scenario, Unspecified [Domain] Nuclear Decommissioning Trust (NDT) Fund [Member] Nuclear Decommissioning Trust Ndt Funds [Member] Nuclear Decommissioning Trust (NDT) Funds [Member] Accounts Receivable Accounts Receivable, Net Accounts Payable Accounts Payable Schedule Of Financial Statements Of Guarantors Schedule Of Financial Statements Of Guarantors Table [Table Text Block] Schedule Of Financial Statements Of Guarantors [Table Text Block] Disclosure Available For Sale Securities Proceeds From The Sales Of And The Net Realized Gains On Securities In The Ndt Funds And Rabbi Trusts [Abstract] Disclosure - Available-For-Sale Securities (Proceeds From The Sales Of And The Net Realized Gains On Securities In The NDT Funds And Rabbi Trusts) [Abstract] Schedule of Available-for-sale Securities [Table] Schedule of Available-for-sale Securities [Table] Available-for-Sale Securities Type of Trust [Axis] Available For Sale Securities Type Of Trust [Axis] Available-for-Sale Securities Type of Trust [Axis] Available For Sale Securities Type Of Trust [Domain] Available For Sale Securities Type Of Trust [Domain] Available-for-Sale Securities Type of Trust [Domain] Rabbi Trusts [Member] Rabbi Trusts [Member] Rabbi Trusts [Member] Schedule of Available-for-sale Securities [Line Items] Schedule of Available-for-sale Securities [Line Items] Proceeds from Sales Proceeds from Sale and Maturity of Available-for-sale Securities Gross Realized Gains Available-for-sale Securities, Gross Realized Gains Gross Realized Losses Available-for-sale Securities, Gross Realized Losses Net Realized Gains (Losses) Realized Investment Gains (Losses) Disclosure Available For Sale Securities Fair Value Of Rabbi Trust [Abstract] Disclosure - Available-For-Sale Securities (Fair Value Of Rabbi Trust) [Abstract] Equity Securities [Member] Equity Securities [Member] Other Debt Securities [Member] Other Debt Obligations [Member] Total Debt Securities [Member] Debt Securities Total [Member] Debt Securities Total [Member] Total Debt Securities [Member] Available For Sale Securities Debt Securities Total [Member] Available For Sale Securities Debt Securities Total [Member] Other Securities [Member] Other Securities [Member] Other Securities Member Other Entity [Member] Other Entity [Member] Other Entity [Member] Total Rabbi Trust Available-for-Sale Securities Available-for-sale Securities Disclosure Financing Receivables Schedule Of Credit Risk Profile Based On Payment Activity [Abstract] Disclosure - Financing Receivables (Schedule Of Credit Risk Profile Based On Payment Activity) [Abstract] Concentration Risk [Table] Concentration Risk [Table] Concentration Risk Type [Axis] Concentration Risk Type [Axis] Concentration Risk Type [Domain] Concentration Risk Type [Domain] Commercial/Industrial [Member] Commercial Industrial Concentration Credit Risk [Member] Commercial/Industrial Concentration Credit Risk [Member] Residential [Member] Residential Concentration Credit Risk [Member] Residential [Member] Concentration Risk [Line Items] Concentration Risk [Line Items] Credit Risk Profile Based on Payment Activity Ceded Credit Risk, Amount Commitments and Contingencies Disclosure [Abstract] Commitments and Contingent Liabilities Commitments and Contingencies Disclosure [Text Block] Income Statement [Abstract] Disclosure Related Party Transactions Schedule Of Related Party Transactions Receivables [Abstract] Disclosure - Related-Party Transactions (Schedule Of Related Party Transactions, Receivables) [Abstract] Receivables from PSE&G through BGS and BGSS Contracts Receivables From Affiliate Through Bgs And Bgss Contracts Receivables from PSE&G through BGS and BGSS Contracts Receivables from PSE&G Related to Gas Supply Hedges for BGSS Receivables From Affiliate Related To Gas Supply Hedges For Bgss Receivables from PSE&G Related to Gas Supply Hedges for BGSS Receivable from (Payable to) Services Payable To Affiliate For Services Payable to affiliate for services. Tax Receivable from (Payable to) PSEG Related Party Tax Expense, Due from Affiliates, Current Receivable from (Payable to) PSEG Receivable From Payable To Parent Receivable from (Payable to) PSEG Accounts Receivable-Affiliated Companies, net Due from Affiliates Accounts Receivable (Payable) - Affiliated Companies, net Due from Affiliate, Current Short-Term Loan to Affiliate (Demand Note to PSEG) Short Term Loan To Affiliate Short-Term Loan to Affiliate Working Capital Advances to Services Advances to Affiliate Long-Term Accrued Taxes Receivable (Payable) Accounts Receivable, Related Parties, Noncurrent Disclosure Other Income And Deductions Schedule Of Other Income [Abstract] Disclosure - Other Income And Deductions (Schedule Of Other Income) [Abstract] Component of Other Income, Nonoperating [Table] Component of Other Income, Nonoperating [Table] Business Segments [Axis] Business Segments [Axis] Segment [Domain] Segment [Domain] Other Segments [Member] Other Income And Deductions [Member] Other Income And Deductions Member Component of Other Income, Nonoperating [Line Items] Component of Other Income, Nonoperating [Line Items] NDT Fund Gains, Interest, Dividend and Other Income Ndt Funds Gains Interest Dividend And Other Income NDT Funds Gains, Interest, Dividend and Other Income Allowance for Funds Used During Construction Public Utilities, Allowance for Funds Used During Construction, Capitalized Cost of Equity Solar Loan Interest Solar Loan Interest Solar loan interest Other Other Nonoperating Income Other Other nonoperating income, other Total Other Income Other Nonoperating Income Disclosure Available for Sale Securities Schedule of Accounts Receivable and Accounts Payable in the Rabbi Trust Funds [Abstract] Disclosure Available for Sale Securities Schedule of Accounts Receivable and Accounts Payable in the Rabbi Trust Funds [Abstract] Financing Receivables Financing Receivables [Text Block] Disclosure Financial Risk Management Activities Schedule Of Gross Volume On Absolute Basis For Derivative Contracts [Abstract] Disclosure - Financial Risk Management Activities (Schedule Of Gross Volume, On Absolute Basis For Derivative Contracts) [Abstract] Derivative [Table] Derivative [Table] Derivative, by Nature [Axis] Derivative, by Nature [Axis] Derivative, Name [Domain] Derivative, Name [Domain] Natural Gas Dth [Member] Natural Gas Dth [Member] Natural Gas Dth [Member] Electricity MWh [Member] Electricity Mwh [Member] Electricity MWh [Member] Capacity MW Days [Member] Capacity Mw Days [Member] Capacity MW Days [Member] FTRs MWh [Member] Ftrs Mwh [Member] FTRs MWh [Member] Interest Rate Swaps [Member] Interest Rate Swaps [Member] Interest Rate Swaps [Member] Coal Tons [Member] Coal Tons [Member] Coal Tons [Member] Derivative [Line Items] Derivative [Line Items] Gross volume of derivative on absolute value basis Nonmonetary Notional Amount of Price Risk Derivatives Disclosure Fair Value Measurements Narrative [Abstract] Disclosure - Fair Value Measurements (Narrative) [Abstract] Asset Class [Axis] Asset Class [Axis] Fair Value by Asset Class [Domain] Fair Value by Asset Class [Domain] Derivative [Member] Derivative [Member] Rabbi Trust [Member] Rabbi Trust [Member] Rabbi Trust [Member] Energy Holdings [Member] Energy Holdings [Member] Energy Holdings [Member] Minimum Number of Pricing Inputs Minimum Number of Pricing Inputs Minimum Number of Pricing Inputs Current liabilities, fair value Net assets measured at fair value on a recurring basis Net Assets Measured At Fair Value On A Recurring Basis Net Assets Measured At Fair Value On A Recurring Basis Net assets measured at fair value on a recurring basis measured using unobservable input and as Level 3 Net Assets Measured At Fair Value On A Recurring Basis Measured Using Unobservable Input And Classified As Level3 Net Assets Measured At Fair Value On A Recurring Basis Measured Using Unobservable Input And Classified As Level3 Fair Value Measurements Fair Value Disclosures [Text Block] Other Income and Deductions Other Income and Other Expense Disclosure [Text Block] Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract] Accumulated Other Comprehensive Income (Loss) [Table] Accumulated Other Comprehensive Income (Loss) [Table] Accumulated Other Comprehensive Income (Loss) [Table] Equity Components [Axis] Equity Components [Axis] Equity Component [Domain] Equity Component [Domain] Energy Related Contracts [Member] Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member] Pension and OPEB Plans [Member] Accumulated Defined Benefit Plans Adjustment [Member] Available-for-Sale Securities [Member] Accumulated Net Unrealized Investment Gain (Loss) [Member] Accumulated Other Comprehensive Income (Loss) [Line Items] Accumulated Other Comprehensive Income (Loss) [Line Items] 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. Accumulated Other Comprehensive Income (Loss) [Roll Forward] Accumulated Other Comprehensive Income (Loss) [Roll Forward] Accumulated Other Comprehensive Income (Loss) [Roll Forward] Accumulated Other Comprehensive Income (Loss), Beginning Balance Accumulated Other Comprehensive Income (Loss), Net of Tax Other Comprehensive Income before Reclassifications Other Comprehensive Income (Loss), before Reclassifications, Net of Tax Other Comprehensive Income (Loss), before Reclassifications, Net of Tax Amounts Reclassified from Accumulated Other Comprehensive Income (Loss) Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax Other Comprehensive Income (Loss), net of tax Other Comprehensive Income (Loss), Net of Tax Accumulated Other Comprehensive Income (Loss), Ending Balance Long-term Purchase Commitment [Table] Long-term Purchase Commitment [Table] Commitments Through 2017 [Member] Commitments Through 2017 [Member] Commitments Through 2017 [Member] Category of Item Purchased [Axis] Category of Item Purchased [Axis] Long-term Purchase Commitment, Category of Item Purchased [Domain] Long-term Purchase Commitment, Category of Item Purchased [Domain] Nuclear Fuel Uranium [Member] Nuclear Fuel Uranium [Member] Nuclear Fuel Uranium [Member] Nuclear Fuel Enrichment [Member] Nuclear Fuel Enrichment [Member] Nuclear Fuel Enrichment [Member] Nuclear Fuel Fabrication [Member] Nuclear Fuel Fabrication [Member] Nuclear Fuel Fabrication [Member] Natural Gas [Member] Natural Gas [Member] Natural Gas [Member] Coal [Member] Coal Oil [Member] Coal/Oil [Member] Long-term Purchase Commitment [Line Items] Long-term Purchase Commitment [Line Items] Coverage percentage of nuclear fuel commitments of uranium, enrichment, and fabrication requirements Coverage Percentage Of Nuclear Fuel Commitments Of Uranium Enrichment And Fabrication Requirements Coverage percentage of nuclear fuel commitments of uranium, enrichment, and fabrication requirements. Total minimum purchase requirements Long-term Purchase Commitment, Amount Disclosure Financial Risk Management Activities Schedule Providing Credit Risk From Others Net Of Collateral [Abstract] Disclosure - Financial Risk Management Activities (Schedule Providing Credit Risk From Others, Net Of Collateral) [Abstract] Investment Grade - External Rating [Member] Investment Grade External Rating [Member] Investment Grade External Rating [Member] Non-Investment Grade - External Rating [Member] Non Investment Grade External Rating [Member] Non-Investment Grade External-Rating [Member] Investment Grade - No External Rating [Member] Investment Grade No External Rating [Member] Investment Grade-No External Rating [Member] Non-Investment Grade - No External Rating [Member] Non Investment Grade No External Rating [Member] Non-Investment Grade-No External Rating [Member] Current Exposure Total Credit Exposure With Counterparties Total credit exposure with counterparties Securities held as Collateral Securities Held as Collateral, at Fair Value Net exposure Net Credit Exposure With Counterparties After Applying Collateral Net credit exposure with counterparties after applying collateral Number of Counterparties greater than 10% Number Of Counterparties With Greater Than Ten Percent Of Net Credit Exposure Number of counterparties with greater than ten percent of net credit exposure Net Exposure of Counterparties greater than 10% Amount Of Net Credit Exposure Greater Than Ten Percent Amount of net credit exposure greater than ten percent Disclosure Guarantees Of Debt Schedule Of Financial Statements Of Guarantors [Abstract] Disclosure - Guarantees Of Debt (Schedule Of Financial Statements Of Guarantors) [Abstract] Guarantee Party [Axis] Guarantee Party [Axis] Guarantee Party [Axis] Guarantee Party [Domain] Guarantee Party [Domain] Guarantee Party [Domain] Power Parent [Member] Power Parent [Member] Power Parent [Member] Debt Instrument [Axis] Debt Instrument [Axis] Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Power Senior Notes [Member] Power Senior Notes [Member] Power Senior Notes [Member] Guarantor Subsidiaries [Member] Guarantor Subsidiaries [Member] Consolidating Adjustments [Member] Consolidation, Eliminations [Member] Non-Guarantor Subsidiaries [Member] Non-Guarantor Subsidiaries [Member] Operating Revenues Revenues Operating Expenses Operating Expenses Operating Income (Loss) Operating Income (Loss) Equity Earnings (Losses) of Subsidiaries Income (Loss) from Equity Method Investments Other Income Other Deductions Other Nonoperating Expense Other-Than-Temporary Impairments Other than Temporary Impairment Losses, Investments Interest Expense Interest Expense Income Tax Expense Income Tax Expense (Benefit) Net Income Net Income (Loss) Attributable to Parent Comprehensive Income (Loss) Comprehensive Income (Loss), Net of Tax, Attributable to Parent Net Cash Provided By (Used In) Operating Activities Net Cash Provided by (Used in) Operating Activities Net Cash Provided By (Used In) Investing Activities Net Cash Provided by (Used in) Investing Activities Net Cash Provided By (Used In) Financing Activities Net Cash Provided by (Used in) Financing Activities Current Assets Assets, Current Property, Plant and Equipment, net Public Utilities, Property, Plant and Equipment, Net Investment in Subsidiaries Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures Noncurrent Assets Assets, Noncurrent Total Assets Assets Current Liabilities Liabilities, Current Noncurrent Liabilities Liabilities, Noncurrent Long-Term Debt Long-term Debt, Excluding Current Maturities Member's Equity Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest TOTAL LIABILITIES AND CAPITALIZATION Liabilities and Equity Accumulated Other Comprehensive Income (Loss), Net of Tax Comprehensive Income (Loss) Note [Text Block] Disclosure Financial Risk Management Activities Narrative [Abstract] Disclosure - Financial Risk Management Activities (Narrative) [Abstract] Schedule of Long-term Debt Instruments [Table] Schedule of Long-term Debt Instruments [Table] Senior Notes 5.5% Due December 2015 [Member] Senior Notes Five Point Five Percent Due Two Thousand Fifteen [Member] Senior Notes Five Point Five Percent Due Two Thousand Fifteen [Member] Senior Notes 5.32% Due September 2016 [Member] Senior Notes 532 Due September 2016 [Member] Senior notes 5.32% due september 2016 [Member] Senior Notes 2.75% Due September 2016 [Member] Senior Notes Two Point Seven Five Percent Due September Two Thousand Sixteen [Member] Senior Notes Two Point Seven Five Percent Due September Two Thousand Sixteen [Member] Amount of after-tax gains on derivatives designated and effective as cash flow hedges expected to be reclassified to earnings during the 12 months following period end Commodity Cash Flow Hedge Gain Loss To Be Reclassified During Next 12 Months Net Commodity Cash Flow Hedge Gain Loss to be Reclassified During Next 12 Months Net Percent of gross margin, less than Percentage Of Marked To Market To Gross Margin Percentage Of Marked To Market To Gross Margin Number of interest rate swaps outstanding, total Number Of Interest Rate Swaps Outstanding Total Number of interest rate swaps outstanding, total Aggregate amount of series of interest rate swaps converting to variable-rate debt Notional Amount of Interest Rate Derivatives Senior Notes converted into variable rate debt Senior Notes Stated interest rate of debt instrument Debt Instrument, Interest Rate, Stated Percentage Fair value of interest rate swaps designated as underlying hedges Interest Rate Fair Value Hedge Asset at Fair Value Aggregate amount of accumulated other comprehensive income (loss) attributed to interest rate derivatives designated as cash flow hedges Unrealized Gain (Loss) on Interest Rate Cash Flow Hedges, Pretax, Accumulated Other Comprehensive Income (Loss) Aggregate fair value of derivative contracts in a liability position that contains triggers for additional collateral Derivative Asset, Fair Value, Amount Offset Against Collateral Additional collateral aggregate fair value Additional Collateral, Aggregate Fair Value Amount of reduction in interest expense attributed to interest rate swaps designated as fair value hedges Increase (Decrease) in Fair Value of Interest Rate Fair Value Hedging Instruments Credit exposure, percentage Percentage Of Credit Exposure Percentage Of Credit Exposure Number of active counterparties on credit risk derivatives Number Of Active Counterparties On Credit Risk Derivatives Number of active counterparties on credit risk derivatives Disclosure Available For Sale Securities Amount Of Available For Sale Debt Securities By Maturity Periods [Abstract] Disclosure - Available-For-Sale Securities (Amount Of Available-For-Sale Debt Securities By Maturity Periods) [Abstract] Available-for-sale debt securities, Less than one year Available-for-sale Securities, Debt Maturities, Next Twelve Months, Fair Value Available-for-sale debt securities, 1-5 years Available-for-sale Securities, Debt Maturities, Year Two Through Five, Fair Value Available-for-sale debt securities, 6-10 years Available-for-sale Securities, Debt Maturities, Year Six Through Ten, Fair Value Available-for-sale debt securities, 11-15 years Available For Sale Securities Debt Maturities After Ten Through Fifteen Years Fair Value Available For Sale Securities Debt Maturities After Ten Through Fifteen Years Fair Value Available-for-sale debt securities, 16-20 years Available For Sale Securities Debt Maturities After Fifteen Through Twenty Years Fair Value Available For Sale Securities Debt Maturities After Fifteen Through Twenty Years Fair Value Available-for-sale debt securities, Over 20 years Available For Sale Securities Debt Maturities After Twenty Years Fair Value Available For Sale Securities Debt Maturities After Twenty Years Fair Value Total Available-for-Sale Debt Securities Available-for-sale Securities, Debt Securities Disclosure Fair Value Measurements Fair Value Of Debt [Abstract] Disclosure - Fair Value Measurements (Fair Value Of Debt) [Abstract] Power - Recourse Debt [Member] Power Recourse Debt [Member] Power Recourse Debt [Member] Transition Funding (PSE&G) [Member] Transition Funding Pse G [Member] Transition Funding (PSE&G) [Member] Transition Funding II (PSE&G) [Member] Transition Funding Ii [Member] Transition Funding II [Member] Energy Holdings Project Level, Non-Recourse Debt [Member] Energy Holdins Project Level Non Recourse Debt [Member] Energy Holdins Project Level, Non-Recourse Debt [Member] Long-Term Debt, Carrying Amount Long-term Debt Long-Term Debt, Fair Value Long-term Debt, Fair Value Related-Party Transactions Related Party Transactions Disclosure [Text Block] Financial Information By Business Segments Segment Reporting Disclosure [Text Block] Schedule Of Effective Tax Rates Schedule of Effective Income Tax Rate Reconciliation [Table Text Block] Variable Interest Entities (VIEs) Schedule of Variable Interest Entities [Table Text Block] Disclosure Other Income And Deductions Schedule Of Other Deductions [Abstract] Disclosure - Other Income And Deductions (Schedule Of Other Deductions) [Abstract] NDT Fund Realized Losses and Expenses Ndt Funds Losses And Expenses NDT Funds Losses And Expenses Other Other Nonoperating Expense Other Other Non operating Expense Other Total Other Deductions Schedule Of Related Party Transactions, Revenue Schedule Of Related Party Transactions Revenue Table [Table Text Block] Schedule Of Related Party Transactions Revenue [Table Text Block] Schedule Of Related Party Transactions, Receivables Schedule Of Related Party Transactions Receivables Table [Table Text Block] Schedule Of Related Party Transactions Receivables [Table Text Block] Schedule Of Related Party Transactions, Payables Schedule Of Related Party Transactions Payables Table [Table Text Block] Schedule Of Related Party Transactions Payables [Table Text Block] Statement of Other Comprehensive Income [Abstract] Net Income Other Comprehensive Income (Loss), net of tax Other Comprehensive Income (Loss), Net of Tax [Abstract] Unrealized Gains (Losses) on Available-for-Sale Securities, net of tax (expense) benefit Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net of Tax Unrealized Gains (Losses) on Cash Flow Hedges, net of tax (expense) benefit Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Net of Tax Pension/OPEB adjustment, net of tax (expense) benefit Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Adjustment, Net of Tax COMPREHENSIVE INCOME Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest Components Of Net Periodic Benefit Cost Schedule of Net Benefit Costs [Table Text Block] Schedule Of Pension And OPEB Costs Schedule Of Pension And Opeb Costs [Table Text Block] Schedule Of Pension And OPEB Costs [Text Block] Disclosure Earnings Per Share E P S And Dividends Basic And Diluted Earnings Per Share Computation [Abstract] Disclosure - Earnings Per Share (EPS) And Dividends (Basic And Diluted Earnings Per Share Computation) [Abstract] Weighted Average Common Shares Outstanding, Basic Weighted Average Common Shares Outstanding Before Various Effects Basic Weighted Average Common Shares Outstanding Before Various Effects, Basic Effect of Stock Based Compensation Awards, Basic Incremental Common Shares Attributable To Share Based Payment Arrangements Basic Incremental Common Shares Attributable To Share Based Payment Arrangements Basic Total Shares, Basic Weighted Average Number of Shares Outstanding, Basic Net Income, Basic Earnings Per Share, Basic Weighted Average Common Shares Outstanding, Diluted Weighted Average Common Shares Outstanding Before Various Effects Diluted Weighted Average Common Shares Outstanding Before Various Effects, Diluted Effect of Stock Based Compensation Awards, Diluted Incremental Common Shares Attributable to Share-based Payment Arrangements Total Shares, Diluted Weighted Average Number of Shares Outstanding, Diluted Net Income, Diluted Earnings Per Share, Diluted Disclosure Financial Risk Management Activities Schedule Of Derivative Instruments Not Designated As Hedging Instruments And Impact On Results Of Operations [Abstract] Disclosure - Financial Risk Management Activities (Schedule Of Derivative Instruments Not Designated As Hedging Instruments And Impact On Results Of Operations) [Abstract] Derivative Instruments, Gain (Loss) by Hedging Relationship, by Income Statement Location, by Derivative Instrument Risk [Table] Derivative Instruments, Gain (Loss) by Hedging Relationship, by Income Statement Location, by Derivative Instrument Risk [Table] Income Statement Location [Axis] Income Statement Location [Axis] Income Statement Location [Domain] Income Statement Location [Domain] Operating Revenues [Member] Operating Revenues [Member] Operating Revenues [Member] Energy Costs [Member] Energy Costs [Member] Energy Costs [Member] Derivative Instruments, Gain (Loss) [Line Items] Derivative Instruments, Gain (Loss) [Line Items] Pre-Tax Gain (Loss) Recognized in Income on Derivatives Increase (Decrease) in Fair Value of Derivative Instruments, Not Designated as Hedging Instruments Rate Filings [Abstract] Rate Filings [Abstract] Schedule of Regulatory Assets [Table] Schedule of Regulatory Assets [Table] Regulatory Assets [Line Items] Regulatory Assets [Line Items] Rate Filings Public Utilities Disclosure [Text Block] Unrealized Gains (Losses) on Available-for-Sale Securities, tax Other Comprehensive Income (Loss), Available-for-sale Securities, Tax Unrealized Gains (Losses) on Cash Flow Hedges, tax Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Tax Pension/OPEB adjustment, tax Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Tax Disclosure Pension And O P E B Narrative [Abstract] Disclosure - Pension And OPEB (Narrative) [Abstract] Schedule of Defined Benefit Plans Disclosures [Table] Schedule of Defined Benefit Plans Disclosures [Table] Defined Benefit Plans and Other Postretirement Benefit Plans [Axis] Defined Benefit Plans and Other Postretirement Benefit Plans [Axis] Defined Benefit Plans and Other Postretirement Benefit Plans [Domain] Defined Benefit Plans and Other Postretirement Benefit Plans [Domain] Pension Benefits [Member] Pension Plans, Defined Benefit [Member] Postretirement Healthcare Plans [Member] Other Postretirement Benefit Plans, Defined Benefit [Member] Defined Benefit Plan Disclosure [Line Items] Defined Benefit Plan Disclosure [Line Items] Employer contributions Defined Benefit Plan, Contributions by Employer Face Value of Outstanding Guarantees Guarantor Obligations, Maximum Exposure, Undiscounted Exposure under Current Guarantees Exposure Under Current Guarantees Exposure under Current Guarantees Letters of Credit Margin Posted Letters Of Credit Margin Posted Letters of Credit Margin Posted Letters of Credit Margin Received Letters Of Credit Margin Received Letters of Credit Margin Received Counterparty Cash Margin Deposited Counterparty Cash Margin Deposited Counterparty Cash Margin Deposited Counterparty Cash Margin Received Counterparty Cash Margin Received Counterparty Cash Margin Received Net Broker Balance Deposited (Received) Net Broker Balance Received Net Broker Balance Received Additional Collateral that could be Required Additional Collateral That Could Be Required If Power Looses Investment Grade Rating Additional Collateral that could be Required if Power Looses Investment Grade Rating Liquidity Available under PSEG's and Power's Credit Facilities to Post Collateral Liquidity Available Under Pseg And Power Credit Facilities To Post Collateral Liquidity Available under PSEG and Power Credit Facilities to Post Collateral Other Letters of Credit Additional Amounts Posted Other Letters Of Credit Additional Amounts Posted Other Letters of Credit Schedule Of Derivative Transactions Designated And Effective As Cash Flow Hedges Schedule Of Derivative Instruments Designated And Effective As Cash Flow Hedges [Table Text Block] Schedule of derivative instruments designated and effective as cash flow hedges Schedule Of Derivative Instruments Fair Value In Balance Sheets Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block] Schedule Of Derivative Instruments Designated As Cash Flow Hedges Schedule of Derivative Instruments, Gain (Loss) in Statement of Financial Performance [Table Text Block] Schedule of Derivative Instruments, Effect on Other Comprehensive Income (Loss) [Table Text Block] Schedule of Derivative Instruments, Effect on Other Comprehensive Income (Loss) [Table Text Block] Schedule Of Derivative Instruments Not Designated As Hedging Instruments And Impact On Results Of Operations Schedule of Other Derivatives Not Designated as Hedging Instruments, Statements of Financial Performance and Financial Position, Location [Table Text Block] Schedule Of Gross Volume, On Absolute Value Basis For Derivative Contracts Schedule of Notional Amounts of Outstanding Derivative Positions [Table Text Block] Schedule Providing Credit Risk From Others, Net Of Collateral Schedule Providing Credit Risk From Others Net Of Collateral [Table Text Block] Schedule providing credit risk from others, net of collateral Regulatory Assets and Liabilities Disclosure [Abstract] Regulatory Assets And Liabilities [Table] Regulatory Assets And Liabilities [Table] Regulatory Assets And Liabilities [Table] Rate Type [Axis] Rate Type [Axis] Rate Type [Axis] Rate Type [Domain] Rate Type [Domain] [Domain] for Rate Type [Axis] Subsequent Event Type [Axis] Subsequent Event Type [Axis] Subsequent Event Type [Domain] Subsequent Event Type [Domain] Regulatory Assets And Liabilities [Line Items] Regulatory Assets And Liabilities [Line Items] Regulatory Assets And Liabilities [Line Items] Approved WNC Deficiency Revenues Recovery Approved WNC Deficiency Revenues Recovery Approved WNC Deficiency Revenues Recovery Approved WNC Carryover Deficiency Revenues Recovery Approved WNC Carryover Deficiency Revenues Recovery Approved WNC Carryover Deficiency Revenues Recovery Supplemental Request for WNC Carryover Deficiency Revenues Recovery Supplemental Request for WNC Carryover Deficiency Revenues Recovery Supplemental Request for WNC Carryover Deficiency Revenues Recovery USF and Lifeline Recovery USF and Lifeline Recovery Rates set to recover spending under mandated energy assistance programs. Request for Increased Transmission Revenues Request for Increased Transmission Revenues The total transmission revenue requirement for a specific period authorized to recovered through regulated rates based on fixed formula, which includes operating expenses and a return on equity. Self Implementing Bill Credit per therm Self Implementing Bill Credit per therm Self Implementing Bill Credit per therm Self Implementing BGSS rate credit to residential customers Self Implementing BGSS rate credit to residential customers Self Implementing BGSS rate credit to residential customers Disclosure Financial Risk Management Activities Schedule Of Reconciliation For Derivative Activity Included In Accumulated Other Comprehensive Loss [Abstract] Disclosure - Financial Risk Management Activities (Schedule Of Reconciliation For Derivative Activity Included In Accumulated Other Comprehensive Loss) [Abstract] Pre-Tax Balance at Beginning of Period Accumulated Other Comprehensive Income Loss Cumulative Changes In Net Gain Loss From Cash Flow Hedges Effect Pre Tax Accumulated Other Comprehensive Income Loss Cumulative Changes In Net Gain Loss From Cash Flow Hedges Effect Pre Tax Gain (Loss) in AOCI Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, before Tax Less: Gain Reclassified into Income Other Comprehensive Income (Loss), Reclassification Adjustment on Derivatives Included in Net Income, before Tax Pre-Tax Balance at End of Period After-Tax Balance at Beginning of Period Accumulated Other Comprehensive Income Loss Cumulative Changes In Net Gain Loss From Cash Flow Hedges Effect After Tax Accumulated Other Comprehensive Income Loss Cumulative Changes In Net Gain Loss From Cash Flow Hedges Effect After Tax Gain (Loss) in AOCI, After-Tax Derivative Instruments, Loss Recognized in Other Comprehensive Income (Loss), Effective Portion Less: Gain Reclassified into Income, After-Tax Derivative Instruments, Gain Reclassified from Accumulated OCI into Income, Effective Portion After-Tax Balance at End of Period Disclosure Available For Sale Securities Securities Held In The Rabbi Trust [Abstract] Disclosure - Available-For-Sale Securities (Securities Held In The Rabbi Trust) [Abstract] Debt Securities [Member] Debt Securities [Member] Cost Available-for-sale Securities, Amortized Cost Basis Gross Unrealized Gains Available-for-sale Securities, Gross Unrealized Gains Gross Unrealized Losses Available-for-sale Securities, Gross Unrealized Losses Fair Value Available-for-sale Securities, Fair Value Disclosure Other [Member] Other Entities [Member] Other Entities [Member] Other Comprehensive Income (Loss), Net of Tax Disclosure Financing Receivables Narrative [Abstract] Disclosure - Financing Receivables (Narrative) [Abstract] Number of Coal Generation Facilities Leased to GenOn REMA Number of Coal Generation Facilities Leased to GenOn REMA Number of Coal Generation Facilities Leased to GenOn REMA Lease investment with non-investment grade counterparties, gross Lease Investment With Non Investment Grade Counterparties Gross Lease Investment With Non Investment Grade Counterparties Gross Lease investment with non-investment grade counterparties, net of deferred taxes Lease Investment With Non Investment Grade Counterparties Net Of Deferred Taxes Lease Investment With Non Investment Grade Counterparties Net Of Deferred Taxes Partial Rental Payment Partial Rental Payment Partial Rental Payment NRG commitment to invest NRG commitment to invest NRG commitment to invest Discontinued Operations and Disposal Groups [Abstract] Asset Disposition Disposal Groups, Including Discontinued Operations, Disclosure [Text Block] Guarantees of Debt Financial Statements Of Guarantors [Text Block] Financial information provided for subsidiary guarantors of Parent debt per rule 3-10 of Reg S-X. Disclosure Changes In Capitalization [Abstract] Disclosure - Changes In Capitalization [Abstract] Senior Notes Two Point Five Zero Percentage Due Two Thousand Thirteen [Member] Senior Notes Two Point Five Zero Percentage Due Two Thousand Thirteen [Member] Senior Notes Two Point Five Zero Percentage Due Two Thousand Thirteen [Member] Two Point Three Percent Secured MTN [Member] Two Point Three Percent Secured MTN [Member] Two Point Three Percent Secured MTN [Member] Three Point Seven Five Percent Secured Medium Term Notes [Member] Three Point Seven Five Percent Secured Medium Term Notes [Member] Three Point Seven Five Percent Secured Medium Term Notes [Member] Five Point Three Seven Five Percent Secured Medium Term Notes [Member] Five Point Three Seven Five Percent Secured Medium Term Notes [Member] Five Point Three Seven Five Percent Secured Medium Term Notes [Member] Two Point Three Seven Five Percent Secured Medium Term Notes [Member] Two Point Three Seven Five Percent Secured Medium Term Notes [Member] Two Point Three Seven Five Percent Secured Medium Term Notes [Member] Five Point Zero Secured MTN [Member] Five Point Zero Secured MTN [Member] Five Point Zero Secured MTN [Member] Three Point Eight Secured MTN [Member] Three Point Eight Secured MTN [Member] Three Point Eight Secured MTN [Member] Transition Fundings Securitization Debt [Member] Transition Fundings Securitization Debt [Member] Transition Fundings Securitization Debt [Member] Transition Fundings Ii Securitization Debt [Member] Transition Fundings Ii Securitization Debt [Member] Transition Fundings II Securitization Debt [Member] Long-term debt Contributed Capital Proceeds from Contributed Capital Cash dividend paid Cash Dividends Paid to Parent Company Repayments of Long-term Debt Repayments of Long-term Debt Transition Funding's securitization debt Payments For Transition Fundings Securitization Debt Payments for transition fundings securitization debt. Issuance of senior debt Debt Instrument, Face Amount Payments For Transition Fundings I I Securitization Debt Payments For Transition Fundings I I Securitization Debt Payments For Transition Fundings II Securitization Debt Financial Risk Management Activities Derivative Instruments and Hedging Activities Disclosure [Text Block] Disclosure Available For Sale Securities Narrative [Abstract] Disclosure - Available-For-Sale Securities (Narrative) [Abstract] Available For Sale Securities Impairment Charge Available For Sale Securities Impairment Charge Available For Sale Securities Impairment Charge Number of Nuclear Facilities Number of Nuclear Facilities Number of Nuclear Facilities After tax amount of net unrealized gains recognized in AOCI Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net of Tax, Portion Attributable to Parent Site Contingency [Table] Site Contingency [Table] Transferred To Power From Pse G [Member] Transferred To Power From Pse G [Member] Transferred to Power from PSE&G [Member] PSE&G's Former MGP Sites [Member] Pse G S Former Mgp Sites [Member] PSE&G's former MGP sites [Member] Environmental Remediation Site [Axis] Environmental Remediation Site [Axis] Site Contingency, Nature of Contingency [Domain] Site Contingency, Nature of Contingency [Domain] Passaic River Site Contingency [Member] Passaic River Site Contingency [Member] Passaic River Site Contingency [Member] PSD NSR Regulations Site Contingency [Member] Psd Nsr Regulations Site Contingency [Member] Psd Nsr Regulations Site Contingency [Member] MGP Remediation Site Contingency [Member] Mgp Remediation Site Contingency [Member] MGP Remediation Site Contingency [Member] Remedial Investigation And Feasibility Study [Member] Remedial Investigation And Feasibility Study [Member] Remedial Investigation And Feasibility Study [Member] Passaic River mile 10.9 contaminant removal [Member] Passaic River mile 10.9 contaminant removal [Member] Passaic River mile 10.9 contaminant removal [Member] Site Contingency [Line Items] Site Contingency [Line Items] Number of miles related to the Passaic River constituting a facility as determined by the US Environmental Protection Agency Number Of Miles Pertaining To Passaic River Facility As Determined By Epa Number of miles pertaining to Passaic River facility as determined by EPA Number of miles on Passaic River tidal reach required to be studied as determined by the US Environmental Protection Agency Number Of Miles Pertaining To Passaic River Tidal Reach Required To Be Studied By Epa Number of miles pertaining to Passaic River tidal reach required to be studied by EPA Number of operating electric generating station (Essex Site) Number Of Operating Electric Generating Station Essex Site Number of operating electric generating station (Essex Site). Number of former generating electric station Number Of Former Generating Electric Station Number of former generating electric station Number of former Manufactured Gas Plant (MGP) sites Number Of Former Manufactured Gas Plant Mgp Sites Number of former Manufactured Gas Plant (MGP) sites. Estimated, total cost of the study Estimated Total Cost Of Study Estimated, Total Cost OF The Study Number of potentially responsible parties ("PRPs") in connection with environmental liabilities for operations conducted near Passaic River Number Of Potentially Responsible Parties In Connection With Environmental Liabilities For Operations Conducted Near Passaic River Number of potentially responsible parties in connection with environmental liabilities for operations conducted near Passaic River Number of current potentially responsible parties ("PRPs") in connection with environmental liabilities for operations conducted near Passaic River Number Of Current Potentially Responsible Parties Prps In Connection With Environmental Liabilities For Operations Conducted Near Passaic River Number of Current potentially responsible parties ("PRPs") in connection with environmental liabilities for operations conducted near Passaic River. Percentage of cost attributable to potentially responsible party Percentage Of Cost Attributable To Potentially Responsible Party Percentage Of Cost Attributable To Potentially Responsible Party Estimated cleanup costs-low estimate Estimated Cleanup Costs Low Estimate Estimated Cleanup Costs Low Estimate Estimated cleanup costs-high estimate Estimated Cleanup Costs High Estimate Estimated Cleanup Costs High Estimate Estimated cleanup costs agreed to by two potentially responsible parties Estimated Cleanup Costs Agreed To By Two Potentially Responsible Parties Estimated Cleanup Costs Agreed To By Two Potentially Responsible Parties Aggregate number of defendants including registrant entities Power and PSE&G included in NJDEP complaint filed February 2009 Aggregate Number Of Defendants In New Jersey Department Of Environmental Protection Complaint Aggregate Number Of Defendants In New Jersey Department Of Environmental Protection Complaint Number of additional PRPs directed by the NJDEP to arrange for natural resource damage assessment and interim compensatory restoration along the lower Passaic River Number Of Additional Potentially Responsible Parties Directed By New Jersey Department Of Environmental Protection To Arrange Damage Assessment For Lower Passaic River Number Of Additional Potentially Responsible Parties Directed By New Jersey Department Of Environmental Protection To Arrange Damage Assessment For Lower Passaic River Estimated cost of interim natural resource injury restoration Estimated Cost Of Interim Natural Resource Injury Restoration Estimated Cost Of Interim Natural Resource Injury Restoration Number of additional legal entities contacted by EPA in conjunction with Newark Bay study area contamination Number Of Additional Legal Entities Contacted By Epa In Conjunction With Newark Bay Study Area Contamination Number Of Additional Legal Entities Contacted By EPA In Conjunction With Newark Bay Study Area Contamination Number of operating electric generating stations located on Hackensack River Number Of Operating Electric Generating Stations Located On Hackensack River In Conjunction With Newark Bay Study Area Contamination Number Of Operating Electric Generating Stations Located On Hackensack River In Conjunction With Newark Bay Study Area Contamination Number of former MGP contamination sites located on Hackensack river in conjunction with Newark Bay study area contamination Number Of Former Mgp Contamination Sites Located On Hackensack River In Conjunction With Newark Bay Study Area Contamination Number Of Former MGP Contamination Sites Located On Hackensack River In Conjunction With Newark Bay Study Area Contamination Number of MGP sites identified by registrant and the NJDEP requiring some level of remedial action Aggregate Number Of Mgp Sites Identified For Cleanup By New Jersey Department Of Environmental Protection Aggregate Number Of MGP Sites Identified For Cleanup By New Jersey Department Of Environmental Protection Estimated expenditures, low end of range Estimated Expenditures Low End Of Range Estimated expenditures, low end of range Estimated expenditures, high end of range Estimated Expenditures High End Of Range Estimated expenditures, high end of range Accrued environmental costs Accrued Environmental Loss Contingencies, Noncurrent Remediation liability recorded as other current liabilities Remediation Liability Recorded As Other Current Liabilities Remediation Liability Recorded As Other Current Liabilities Remediation liability recorded as environmental costs in noncurrent liabilities Remediation Liability Recorded As Other Noncurrent Liabilities Remediation Liability Recorded As Other Noncurrent Liabilities Regulatory assets Regulatory Assets Penalty per day from date of violation-minimum Penalty Per Day From Date Of Violation Minimum Penalty Per Day From Date Of Violation Minimum Penalty per day from date of violation-maximum Penalty Per Day From Date Of Violation Maximum Penalty Per Day From Date Of Violation Maximum Ownership percentage of Keystone Coal fired plant in Pennsylvania Ownership Percentage Of Keystone Coal Fired Plant In Pennsylvania Ownership percentage of Keystone Coal fired plant in Pennsylvania Parent companies share of investment in Clean Air Act requirements Parent Companies Share Of Investment In Clean Air Act Requirements Parent companies share of investment in Clean Air Act requirements Number of combustion turbines required to be retired to meet NOx emission reduction requirements Number Of Combustion Turbines Required To Be Retired To Meet Nox Emission Reduction Requirements Number of combustion turbines required to be retired to meet NOx emission reduction requirements. Number of MW required to be retired to meet NOx emission reduction requirements Number Of Mw Required To Be Retired To Meet Nox Emission Reduction Requirements Number of MW required to be retired to meet NOx emission reduction requirements. Number of steam electric generation units requiring significant capital investment for additional controls or retirement as determined by NJDEP Number Of Steam Electric Generation Units Requiring Significant Capital Investments Number Of Steam Electric Generation Units Requiring Significant Capital Investments Number of MW requiring significant capital investment for additional controls or retirement as determined by NJDEP Number Of Mw Requiring Significant Capital Investment For Additional Controls Or Retirement As Determined By Njdep Number of MW requiring significant capital investment for additional controls or retirement as determined by NJDEP. New Salem facility cooling towers estimated cost total New Salem Facility Cooling Towers Estimated Cost Total New Salem facility cooling towers estimated cost total. Disclosure Fair Value Measurements Changes In Level 3 Assets And Liabilities Measured At Fair Value On A Recurring Basis [Abstract] Disclosure - Fair Value Measurements (Changes In Level 3 Assets And (Liabilities) Measured At Fair Value On A Recurring Basis) [Abstract] Net Derivative Assets (Liabilities) [Member] Net Derivative Assets [Member] Net Derivative Assets Member Non Recourse Debt [Member] Non Recourse Debt [Member] Non Recourse Debt Member Opening Balance Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value Included in Income Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Earnings Included in Regulatory Assets/Liabilities Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Gain Loss Included In Regulatory Assets Liabilities Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Gain Loss Included In Regulatory Assets Liabilities Purchases, (Sales) Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Liability Purchases And Sales Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Liability Purchases And Sales Issuances (Settlements) Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Liability Issuances And Settlements Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Liability Issuances And Settlements Transfers In (Out) Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Transfers, Net Closing Balance Gains and losses attributable to changes in net derivative assets and liabilities, included in Operating Income Fair Value Assets And Liabilities Measured On Recurring Basis Gain Loss Included In Trading Revenue FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisGainLossIncludedInTradingRevenue Gains and losses attributable to changes in net derivative assets and liabilities, unrealized Fair Value, Assets Measured on Recurring Basis, Change in Unrealized Gain (Loss) Included in Trading Revenue Settlements Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Settlements Schedule Of Other Income Schedule Of Other Income Table [Text Block] Schedule Of Other Income [Table Text Block] Schedule Of Other Deductions Other Deductions Table [Text Block] Schedule of Other Deductions Statement of Cash Flows [Abstract] CASH FLOWS FROM OPERATING ACTIVITIES Net Cash Provided by (Used in) Operating Activities [Abstract] Adjustments to Reconcile Net Income to Net Cash Flows from Operating Activities: Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Depreciation and Amortization Depreciation, Depletion and Amortization Amortization of Nuclear Fuel Amortization Of Nuclear Fuel Amortization of nuclear fuel. Provision for Deferred Income Taxes and ITC Deferred Income Taxes and Tax Credits Non-Cash Employee Benefit Plan Costs Pension and Other Postretirement Benefit Expense Leveraged Lease Income, Adjusted for Rents Received and Deferred Taxes Leveraged Leases, Income (Loss) Net Realized and Unrealized (Gains) Losses on Energy Contracts and Other Derivatives Realized Unrealized Gain Loss On Derivatives And Commodity Contracts Adjustment on the fair value of derivatives and commodity contracts resulting from changes in market prices from the time contracts are entered to the time of the reporting period. Change in Accrued Storm Costs Deferred Storm Costs Deferred Storm Costs Net Change in Regulatory Assets and Liabilities Increase (Decrease) in Regulatory Assets and Liabilities Cost of Removal Payments for (Proceeds from) Removal Costs Net Realized (Gains) Losses and (Income) Expense from NDT Fund Net Realized Gains Losses And Income Expense From Nuclear Decommissioning Trust Funds Net Realized Gains Losses And Income Expense From Nuclear Decommissioning Trust Funds Employee Benefit Plan Funding and Related Payments Pension and Other Postretirement Benefit Contributions Other Increase (Decrease) in Other Operating Assets and Liabilities, Net Net Change in Certain Current Assets and Liabilities: Increase (Decrease) in Operating Capital [Abstract] Accounts Receivable and Unbilled Revenues Increase (Decrease) in Accounts and Other Receivables Fuel, Materials and Supplies Increase (Decrease) in Materials and Supplies Margin Deposit Increase (Decrease) in Margin Deposits Outstanding Prepayments Increase (Decrease) in Prepaid Expense Accounts Receivable Increase (Decrease) in Accounts Receivable Net Change in Tax Receivable Increase (Decrease) in Income Taxes Receivable Net Change in Certain Current Assets and Liabilities Increase (Decrease) in Operating Capital Accounts Payable Increase (Decrease) in Accounts Payable Accounts Receivable/Payable-Affiliated Companies, net Increase (Decrease) in Accounts Payable, Related Parties Accrued Interest Payable, Net Increase (Decrease) in Interest Payable, Net Other Current Assets and Liabilities Increase (Decrease) in Other Current Assets and Liabilities, Net Net Cash Provided By (Used In) Operating Activities CASH FLOWS FROM INVESTING ACTIVITIES Net Cash Provided by (Used in) Investing Activities [Abstract] Additions to Property, Plant and Equipment Payments to Acquire Property, Plant, and Equipment Proceeds from Sale of Capital Leases and Investments Proceeds from Sale, Maturity and Collection of Investments Proceeds from Sale of Available-for-Sale Securities Proceeds from Sale of Available-for-sale Securities Investments in Available-for-Sale Securities Payments to Acquire Available-for-sale Securities Solar Loan Investments Issuance Of Loans For Solar Investments Net cash outflow under approved solar loan programs for the period Short-Term Loan-Affiliated Company, net Increase (Decrease) in Due to Related Parties, Current Other Payments for (Proceeds from) Other Investing Activities Restricted Funds Increase (Decrease) in Restricted Cash Net Cash Provided By (Used In) Investing Activities CASH FLOWS FROM FINANCING ACTIVITIES Net Cash Provided by (Used in) Financing Activities [Abstract] Net Change in Short-Term Debt Proceeds from (Repayments of) Short-term Debt Net Change in Commercial Paper and Loans Proceeds from (Repayments of) Commercial Paper Issuance of Long-Term Debt Proceeds from Issuance of Other Long-term Debt Redemption of Long-Term Debt Repayments of Other Long-term Debt Redemption of Securitization Debt Repayment Of Transition Bonds Repayment of transition bonds. Repayments Of Nonrecourse Debt Repayments Of Nonrecourse Debt Cash outflows associated with repayments of non-recourse debt. Cash Dividend Paid on Common Stock Payments of Ordinary Dividends, Common Stock Other Proceeds from (Payments for) Other Financing Activities Net Cash Provided By (Used In) Financing Activities Net Increase (Decrease) In Cash and Cash Equivalents Cash and Cash Equivalents, Period Increase (Decrease) Cash and Cash Equivalents at Beginning of Period Cash and Cash Equivalents, at Carrying Value Cash and Cash Equivalents at End of Period Supplemental Disclosure of Cash Flow Information: Supplemental Cash Flow Information [Abstract] Income Taxes Paid (Received) Income Taxes Paid Interest Paid, Net of Amounts Capitalized Interest Paid, Net Accrued Property, Plant and Equipment Expenditures Capital Expenditures Incurred but Not yet Paid Document and Entity Information [Abstract] Document and Entity Information [Abstract] Document Information [Table] Document Information [Table] Entity Information [Line Items] Entity Information [Line Items] Document Type Document Type Amendment Flag Amendment Flag Document Period End Date Document Period End Date Document Fiscal Year Focus Document Fiscal Year Focus Document Fiscal Period Focus Document Fiscal Period Focus Trading Symbol Trading Symbol Entity Registrant Name Entity Registrant Name Entity Central Index Key Entity Central Index Key Current Fiscal Year End Date Current Fiscal Year End Date Entity Filer Category Entity Filer Category Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Changes in Capitalization Schedule of Capitalization [Table Text Block] Income Taxes Income Tax Disclosure [Text Block] Disclosure Financing Receivables Schedule Of Assets Under Lease Receivables [Abstract] Disclosure - Financing Receivables (Schedule Of Assets Under Lease Receivables) [Abstract] Schedule Of Financial Receivables [Table] Schedule Of Financial Receivables [Table] Schedule Of Financial Receivables [Table] Property, Plant and Equipment, Type [Axis] Property, Plant and Equipment, Type [Axis] Property, Plant and Equipment, Type [Domain] Property, Plant and Equipment, Type [Domain] Powerton Station Units 5 And 6 [Member] Powerton Station [Member] Powerton Station Joliet Station Units 7 And 8 [Member] Joliet Station [Member] Joliet Station Keystone Station Units 1 And 2 [Member] Keystone Station [Member] Keystone Station Conemaugh Station Units 1 And 2 [Member] Conemaugh Station [Member] Conemaugh Station Shawville Station Units 1, 2, 3 And 4 [Member] Shawville Station [Member] Shawville Station Property, Plant and Equipment [Line Items] Property, Plant and Equipment [Line Items] Lease Receivable, Asset Location Lease Receivable Asset Location Lease Receivable, Asset Location Lease Receivable, Gross Investment Lease Receivable Gross Investment Lease Receivable, Gross Investment Lease Receivable, % Owned Lease Receivable Percent Owned Lease Receivable, Percent Owned Lease Receivable, Total, MW Lease Receivable Asset Capacity Lease Receivable, Asset Capacity Lease Receivable, Asset, Fuel Type Lease Receivable Asset Fuel Type Lease Receivable, Asset, Fuel Type Lease Receivable, Counterparties' S&P Credit Ratings Lease Receivable Counterparties Credit Ratings Lease receivable counterparties credit ratings Lease Receivable, Counterparty Lease Receivable Counterparty Lease Receivable, Counterparty Disclosure Income Taxes Narrative [Abstract] Disclosure - Income Taxes (Narrative) [Abstract] Component of Other Expense, Nonoperating [Table] Component of Other Expense, Nonoperating [Table] Component of Other Expense, Nonoperating [Line Items] Component of Other Expense, Nonoperating [Line Items] Bonus depreciation for tax purposes Bonus Depreciation For Tax Purposes Bonus Depreciation For Tax Purposes Average tax benefits recognition period Average Tax Benefits Recognition Period Average Tax Benefits Recognition Period Tax deposit Tax Deposit Tax Deposit Unrecognized tax benefit decrease on settlement with IRS Unrecognized Tax Benefit Potential Decrease On Settlement With Irs Unrecognized tax benefit potential decrease on settlement with IRS Auction Year 2010 [Member] Auction Year 2010 [Member] Auction Year 2010 [Member] Auction Year 2011 [Member] Auction Year 2011 [Member] Auction Year 2011 [Member] Auction Year 2012 [Member] Auction Year 2012 [Member] Auction Year 2012 [Member] Auction Year 2013 [Member] Auction Year 2013 [Member] [Domain] Auction Year 2013 [Member] [Domain] 36-Month Terms Ending Long-term Contract for Purchase of Electric Power, Date of Contract Expiration Load (MW) Load Megawatt Load Megawatt $ per kWh Dollars Per Kilowatt Hour Dollars Per Kilowatt Hour Number of cubic feet in gas hedging permitted to be recovered by BPU Number Of Cubic Feet In Gas Hedging Permitted To Be Recovered By Bpu Number of cubic feet in gas hedging permitted to be recovered by BPU. Percentage of residential gas supply permitted to be recovered in gas hedging by BPU Percentage Of Residential Gas Supply Permitted To Be Recovered In Gas Hedging By Bpu Percentage of residential gas supply permitted to be recovered in gas hedging by BPU. Percentage of annual residential gas supply requirements to be hedged Percentage Of Annual Residential Gas Supply Requirements To Be Hedged Percentage of annual residential gas supply requirements to be hedged Number of cubic feet to be hedged Number Of Cubic Feet To Be Hedged Number of cubic feet to be hedged Organization, Consolidation and Presentation of Financial Statements [Abstract] Number of Direct Wholly Owned Subsidiaries Number of Direct Wholly Owned Subsidiaries Number of Direct Wholly Owned Subsidiaries Disclosure Fair Value Measurements Pses Powers And Psegs Respective Assets And Liabilities Measured At Fair Value On A Recurring Basis [Abstract] Disclosure - Fair Value Measurements (PSEG's, Power's And PSE&G's Respective Assets And (Liabilities) Measured At Fair Value On A Recurring Basis) [Abstract] Fair Value, Hierarchy [Axis] Fair Value, Hierarchy [Axis] Fair Value, Measurements, Fair Value Hierarchy [Domain] Fair Value, Measurements, Fair Value Hierarchy [Domain] Total Estimate Of Fair Value [Member] Estimate of Fair Value, Fair Value Disclosure [Member] Cash Collateral Netting [Member] Derivativefairvalueofderivative Amount Offset Against Collateral [Member] Derivative Fair Value Of Derivative Amount Offset Against Collateral Quoted Market Prices of Identical Assets (Level 1) [Member] Fair Value, Inputs, Level 1 [Member] Significant Other Observable Inputs (Level 2) [Member] Fair Value, Inputs, Level 2 [Member] Significant Unobservable Inputs (Level 3) [Member] Fair Value, Inputs, Level 3 [Member] Rabbi Trust - Equity Securities-Mutual Funds [Member] Rabbi Trusts Equity Securities Mutual Funds [Member] Rabbi Trusts Equity Securities Mutual Funds [Member] Rabbi Trust - Debt Securities-Govt Obligations [Member] Rabbi Trusts Debt Securities Government Obligations [Member] Rabbi Trusts Debt Securities Government Obligations [Member] Rabbi Trust - Debt Securities-Other [Member] Rabbi Trusts Debt Securities Other [Member] Rabbi Trusts Debt Securities Other [Member] Rabbi Trust - Other Securities [Member] Rabbi Trusts Other Securities [Member] Rabbi Trusts Other Securities [Member] Total Mark-to-Market Derivative Assets Total Mark-to-Market Derivative (Liabilities) Fair Value, Measured on Recurring Basis, Investments Investments, Fair Value Disclosure Disclosure Financial Risk Management Activities Schedule Of Derivative Transactions Designated And Effective As Cash Flow Hedges [Abstract] Disclosure - Financial Risk Management Activities (Schedule Of Derivative Transactions Designated And Effective As Cash Flow Hedges) [Abstract] Fair Value of Cash Flow Hedges Cash Flow Hedge Derivative Instrument Assets at Fair Value Impact on Accumulated Other Comprehensive Income (Loss) (after tax) Accumulated Other Comprehensive Income (Loss), Cumulative Changes in Net Gain (Loss) from Cash Flow Hedges, Effect Net of Tax Reclassification out of Accumulated Other Comprehensive Income [Table] Reclassification out of Accumulated Other Comprehensive Income [Table] Reclassification out of Accumulated Other Comprehensive Income [Table] Reclassification out of Accumulated Other Comprehensive Income [Axis] Reclassification out of Accumulated Other Comprehensive Income [Axis] Reclassification out of Accumulated Other Comprehensive Income [Axis] Reclassification out of Accumulated Other Comprehensive Income [Domain] Reclassification out of Accumulated Other Comprehensive Income [Domain] [Domain] for Reclassification out of Accumulated Other Comprehensive Income [Axis] Reclassification out of Accumulated Other Comprehensive Income [Member] Reclassification out of Accumulated Other Comprehensive Income [Member] Reclassification out of Accumulated Other Comprehensive Income [Member] Reclassification out of Accumulated Other Comprehensive Income [Line Items] Reclassification out of Accumulated Other Comprehensive Income [Line Items] [Line Items] for Reclassification out of Accumulated Other Comprehensive Income [Table] Interest Expense Income (Loss) from Continuing Operations before Income Taxes Income Loss From Continuing Operations Before Income Taxes Sum of operating profit and nonoperating income (expense) before income taxes. Tax (Expense) Benefit Net Income (Loss) Amortization of Prior Service Cost, Pre-Tax Other Comprehensive Income (Loss), Amortization, Pension and Other Postretirement Benefit Plans, Net Prior Service Cost Recognized in Net Periodic Benefit Cost, before Tax Amortization of Prior Service Cost, Tax Other Comprehensive Income (Loss), Amortization, Pension and Other Postretirement Benefit Plans, Net Prior Service Cost Recognized in Net Periodic Pension Cost, Tax Amortization of Prior Service Cost, After-Tax Other Comprehensive Income (Loss), Amortization, Pension and Other Postretirement Benefit Plans, Net Prior Service Cost Recognized in Net Periodic Pension Cost, Net of Tax Amortization of Actuarial Loss, Pre-Tax Other Comprehensive Income (Loss), Reclassification, Pension and Other Postretirement Benefit Plans, Net Gain (Loss) Recognized in Net Periodic Benefit Cost, before Tax Amortization of Actuarial Loss, Tax Other Comprehensive Income (Loss), Reclassification, Pension and Other Postretirement Benefit Plans, Net Gain (Loss) Recognized in Net Periodic Benefit Cost, Tax Amortization of Actuarial Loss, After-Tax Other Comprehensive Income (Loss), Reclassification, Pension and Other Postretirement Benefit Plans, Net Gain (Loss) Recognized in Net Periodic Benefit Cost, Net of Tax Realized Gains, Pre-Tax Gain (Loss) on Investments, Excluding Other than Temporary Impairments Realized Gains, Tax Gain (Loss) on Investments, Excluding Other than Temporary Impairments, Tax Gain (Loss) on Investments, Excluding Other than Temporary Impairments, Tax Realized Gains. After-Tax Gain (Loss) on Investments, Excluding Other than Temporary Impairments. Net of Tax Gain (Loss) on Investments, Excluding Other than Temporary Impairments. Net of Tax Realized Losses, Pre-Tax Other Comprehensive Income (Loss), Reclassification Adjustment for Sale of Securities Included in Net Income, before Tax Realized Losses, Tax Other Comprehensive Income (Loss), Reclassification Adjustment for Sale of Securities Included in Net Income, Tax Realized Losses, After-Tax Other Comprehensive Income (Loss), Reclassification Adjustment for Sale of Securities Included in Net Income, Net of Tax Other-Than-Temporary Impairments, Pre-Tax Other than Temporary Impairment Losses, Investments, Portion Recognized in Earnings, Net Other-Than-Temporary Impairments, Tax Other than Temporary Impairment Losses, Investments, Portion Recognized in Earnings, Net, Tax Other than Temporary Impairment Losses, Investments, Portion Recognized in Earnings, Net, Tax Other-Than-Temporary Impairments, After-Tax Other than Temporary Impairment Losses, Investments, Portion Recognized in Earnings, Net of Tax Other than Temporary Impairment Losses, Investments, Portion Recognized in Earnings, Net of Tax Disclosure Pension And O P E B Components Of Net Periodic Benefit Cost [Abstract] Disclosure - Pension And OPEB (Components Of Net Periodic Benefit Cost) [Abstract] OPEB [Member] Service Cost Defined Benefit Plan, Service Cost Interest Cost Defined Benefit Plan, Interest Cost Expected Return on Plan Assets Defined Benefit Plan, Expected Return on Plan Assets Amortization of Net Transition Obligation Defined Benefit Plan, Amortization of Transition Obligations (Assets) Amortization of Prior Service Cost Defined Benefit Plan, Amortization of Prior Service Cost (Credit) Amortization of Actuarial Loss Defined Benefit Plan Actuarial Amortization Of Net Losses Gains Defined Benefit Plan Actuarial Amortization Of Net Losses Gains Net Periodic Benefit Cost Defined Benefit Plan, Net Periodic Benefit Cost Defined Benefit Plan, Cost of Providing Special or Contractual Termination Benefits Recognized During Period Defined Benefit Plan, Cost of Providing Special or Contractual Termination Benefits Recognized During Period Effect of Regulatory Asset Amortization of Regulatory Asset Total Benefit Costs, Including Effect of Regulatory Asset Total Benefit Costs Including Effect Of Regulatory Asset Total Benefit Costs Including Effect Of Regulatory Asset Schedule Of Credit Risk Profile Based On Payment Activity Schedules of Concentration of Risk, by Risk Factor [Table Text Block] Schedule Of Gross And Net Lease Investment Schedule of Components of Leveraged Lease Investments [Table Text Block] Schedule Of Lease Receivables, Net Of Nonrecourse Debt, Associated With Leveraged Lease Portfolio Based On Counterparty Credit Rating Schedule Of Lease Receivables Net Of Nonrecourse Debt Associated With Leveraged Lease Portfolio Based On Counterparty Credit Rating [Text Block] Schedule of Lease Receivables Net of Nonrecourse Debt Associated with Leveraged Lease Portfolio Based On Counterparty Credit Rating [Text Block] Schedule Of Assets Under Lease Receivables Schedule Of Assets Under Lease Receivables [Text Block] Schedule of assets under lease receivables Schedule of Changes in Accumulated Other Comprehensive Income by Component Schedule of Changes in Accumulated Other Comprehensive Income by Component [Table Text Block] Schedule of Changes in Accumulated Other Comprehensive Income by Component [Table Text Block] Reclassifications out of Accumulated Other Comprehensive Income Reclassifications out of Accumulated Other Comprehensive Income [Table Text Block] Reclassifications out of Accumulated Other Comprehensive Income [Table Text Block] Schedule of Accumulated Other Comprehensive Income (Loss) Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] Disclosure Financial Risk Management Activities Schedule Of Derivative Instruments Designated As Cash Flow Hedges [Abstract] Disclosure - Financial Risk Management Activities (Schedule Of Derivative Instruments Designated As Cash Flow Hedges) [Abstract] Interest Expense [Member] Interest Expense [Member] Amount of Pre-Tax Gain (Loss) attributed to Cash Flow Hedges Recognized in AOCI on Derivatives (Effective Portion) Unrealized Gain (Loss) on Cash Flow Hedging Instruments Amount of Pre-Tax Gain (Loss) Recognized in Income on Derivatives (Ineffective Portion) Gain (Loss) on Cash Flow Hedge Ineffectiveness, Net Amount of Pre-Tax Gain (Loss) attributed to Cash Flow Hedges Reclassified from AOCI into Operating Revenues (Effective Portion) Cash Flow Hedge Gain (Loss) Reclassified to Revenue, Net Amount of Pre-Tax Gain (Loss) attributed to Cash Flow Hedges Reclassified from AOCI into Energy Costs (Effective Portion) Cash Flow Hedge Gain (Loss) Reclassified to Cost of Sales, Net Amount of Pre-Tax Gain (Loss) attributed to Cash Flow Hedges Reclassified from AOCI into Energy Costs (Effective Portion) Cash Flow Hedge Gain (Loss) Reclassified to Earnings, Net Cash Flow Hedge Gain (Loss) Reclassified to Interest Expense, Net Cash Flow Hedge Gain (Loss) Reclassified to Interest Expense, Net Loss Contingencies [Table] Loss Contingencies [Table] SOCA Contract commencing in 2015/2016 Delivery Year [Member] SOCA Contract commencing in 2015/2016 Delivery Year [Member] SOCA Contract commencing in 2015/2016 Delivery Year [Member] Loss Contingency Nature [Axis] Loss Contingency Nature [Axis] Loss Contingency, Nature [Domain] Loss Contingency, Nature [Domain] New Jersey Clean Energy Program Unfavorable Regulatory Action [Member] New Jersey Clean Energy Program Unfavorable Regulatory Action [Member] New Jersey Clean Energy Program Unfavorable Regulatory Action [Member] Superstorm Sandy [Member] Superstorm Sandy [Member] Superstorm Sandy [Member] Loss Contingencies [Line Items] Loss Contingencies [Line Items] Aggregate funding for New Jersey Clean Energy Program Loss Contingency, Estimate of Possible Loss Discounted liability recorded-current Loss Contingency, Accrual Carrying Value, Current Number of Generators selected under LCAPP Number of Generators selected under LCAPP Number of Generators selected under LCAPP Aggregate notional amount of MW capacity New Combined Cycle Generating Facilities To Be Built Under Lcapp New Combined Cycle Generating Facilities To Be Built Under LCAPP SOCA payments term Standard Offer Capacity Agreements Payments Terms Standard Offer Capacity Agreements Payments Terms Percentage of Installed Capacity Under LCAPP Subsidiary Will Be Serving Percentage of Installed Capacity Under LCAPP Subsidiary Will Be Serving Percentage of Installed Capacity Under LCAPP Subsidiary Will Be Serving Number of Installed Capacity Under LCAPP Subsidiary Will Be Serving Number of Installed Capacity Under LCAPP Subsidiary Will Be Serving Number of Installed Capacity Under LCAPP Subsidiary Will Be Serving Operation and Maintenance Utilities Operating Expense, Maintenance and Operations Proceeds from Insurance Recoveries Proceeds from Insurance Recoveries Proceeds from Insurance Recoveries Total Costs to Restore to pre-Storm conditions Utilities, Operating Expenses, Estimated Future Costs Utilities, Operating Expenses, Estimated Future Costs Available-for-Sale Securities Available-for-sale Securities [Table Text Block] Earnings Per Share (EPS) and Dividends Earnings Per Share [Text Block] Disclosure Related Party Transactions Schedule Of Related Party Transactions Revenue [Abstract] Disclosure - Related-Party Transactions (Schedule Of Related Party Transactions, Revenue) [Abstract] Billings From Power through BGSS Billings To Affiliate Through Bgss Billings to affiliate through BGSS Billings From Power through BGS Billings To Affiliate Through Bgs Billings to affiliate through BGS Total Revenue from Affiliates Revenue from Related Parties Administrative Billings from Services Billings From Administrative Shared Service Company Affiliated Aggregate billings from affiliated entities earned during the period from providing administrative services to investment managers or funds seeking to outsource all or part of their mutual fund service functions. Examples of such administrative or support services include the following: legal advice, centralized cash management, filing of reports with the SEC and the IRS, registering of fund shares, corresponding with shareholders, and determination of compliance with various restrictions. An affiliate is a party that, directly or indirectly through one or more intermediaries, controls, is controlled by, or is under common control with the entity. Total Expense Billings from Affiliates Affiliate Costs PSEG's, Power's And PSE&G's Respective Assets And (Liabilities) Measured At Fair Value On A Recurring Basis Fair Value, Assets Measured on Recurring Basis [Table Text Block] Schedule of Quantitative Information About Level 3 Fair Value Measurements Fair Value Inputs, Assets, Quantitative Information [Table Text Block] Changes In Level 3 Assets And (Liabilities) Measured At Fair Value On A Recurring Basis Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block] Schedule Of Fair Value Of Debt Table [Text Block] Schedule Of Fair Value Of Debt Table [Table Text Block] Schedule of Fair Value of Debt Disclosure Financing Receivables Schedule Of Lease Receivables Net Of Nonrecourse Debt Associated With Leveraged Lease Portfolio Based On Counterparty Credit Rating [Abstract] Disclosure - Financing Receivables (Schedule Of Lease Receivables, Net Of Nonrecourse Debt, Associated With Leveraged Lease Portfolio Based On Counterparty Credit Rating) [Abstract] Schedule of Guarantor Obligations [Table] Schedule of Guarantor Obligations [Table] Credit Rating [Axis] Credit Rating [Axis] Credit Rating [Domain] Credit Rating [Domain] Counterparties' Credit Rating (S&P), AA [Member] Standard & Poor's, AA Rating [Member] Counterparties' Credit Rating (S&P), AA- [Member] Standard & Poor's, AA- Rating [Member] Counterparties' Credit Rating (S&P), BBB+ - BBB- [Member] Standard & Poor's, BBB Rating [Member] Counterparties' Credit Rating (S&P), B [Member] Standard & Poor's, B Rating [Member] Counterparties' Credit Rating (S&P) Not Rated [Member] Standard Poors Not Rated [Member] Standard Poors Not Rated [Member] Guarantor Obligations [Line Items] Guarantor Obligations [Line Items] Lease Receivables, Net of Non-Recourse Debt Leveraged Leases, Net Investment in Leveraged Leases Disclosure, Rental Receivables, Net Operating Expenses [Abstract] Operating Expenses [Abstract] Energy Costs Cost of Services, Energy Services Depreciation and Amortization Cost of Goods Sold, Depreciation and Amortization Taxes Other Than Income Taxes Excise and Sales Taxes Total Operating Expenses OPERATING INCOME Income from Equity Method Investments INCOME FROM CONTINUING OPERATIONS BEFORE INCOME TAXES WEIGHTED AVERAGE COMMON SHARES OUTSTANDING (THOUSANDS): Weighted Average Number of Shares Outstanding, Diluted [Abstract] BASIC DILUTED EARNINGS PER SHARE: Earnings Per Share [Abstract] INCOME FROM CONTINUING OPERATIONS, BASIC Income (Loss) from Continuing Operations, Per Basic Share NET INCOME INCOME FROM CONTINUING OPERATIONS, DILUTED Income (Loss) from Continuing Operations, Per Diluted Share NET INCOME DIVIDENDS PAID PER SHARE OF COMMON STOCK Common Stock, Dividends, Per Share, Cash Paid Disclosure Pension And O P E B Schedule Of Pension And O P E B Costs [Abstract] Disclosure - Pension And OPEB (Schedule Of Pension And OPEB Costs) [Abstract] Total Benefit Costs Statement of Financial Position [Abstract] Accounts Receivable, allowances Allowance for Doubtful Accounts Receivable, Current Common Stock, issued Common Stock, Shares, Issued Common Stock, outstanding Common Stock, Shares, Outstanding Common Stock, authorized Common Stock, Shares Authorized Treasury Stock, Shares Treasury Stock, Shares Financial Information By Business Segments Schedule of Segment Reporting Information, by Segment [Table Text Block] Disclosure Available For Sale Securities Fair Values And Gross Unrealized Gains And Losses For The Securities Held In The Ndt Fund [Abstract] Disclosure - Available-For-Sale Securities (Fair Values And Gross Unrealized Gains And Losses For The Securities Held In The NDT Fund) [Abstract] Disclosure Income Taxes Schedule Of Effective Tax Rates [Abstract] Disclosure - Income Taxes (Schedule Of Effective Tax Rates) [Abstract] Effective tax rate Effective Income Tax Rate, Continuing Operations Disclosure Earnings Per Share E P S And Dividends Dividend Payments On Common Stock [Abstract] Disclosure - Earnings Per Share (EPS) And Dividends (Dividend Payments On Common Stock) [Abstract] Dividend Payments on Common Stock, Per Share Dividend Payments on Common Stock Proceeds from sale of its investments in a commercial office complex Proceeds from Sale of Other Investments Gain on sale of its investments in a commercial office complex Gain (Loss) on Sale of Other Investments Pension and OPEB Pension and Other Postretirement Benefits Disclosure [Text Block] ASSETS Assets [Abstract] CURRENT ASSETS Assets, Current [Abstract] Cash and Cash Equivalents Accounts Receivable, net of allowances in 2013 and 2012, respectively Accounts Receivable, Net, Current Tax Receivable Income Taxes Receivable Accounts Receivable-Affiliated Companies, net Accounts Receivable, Related Parties, Current Unbilled Revenues Unbilled Receivables, Current Short-Term Loan to Affiliate Notes Receivable, Related Parties, Current Fuel Fuel Carrying amount as of the balance sheet date of fuel inventory to be used in the production of energy. Materials and Supplies, net Inventory, Raw Materials and Supplies, Gross Prepayments Prepaid Expense, Current Derivative Contracts Deferred Income Taxes Deferred Tax Assets, Net of Valuation Allowance, Current Regulatory Assets Regulatory Assets, Current Other Other Current Assets Other Current Assets Other Other Assets, Current Total Current Assets PROPERTY, PLANT AND EQUIPMENT Public Utilities, Property, Plant and Equipment, Plant in Service Less: Accumulated Depreciation and Amortization Public Utilities, Property, Plant and Equipment, Accumulated Depreciation Net Property, Plant and Equipment NONCURRENT ASSETS Assets, Noncurrent [Abstract] Regulatory Assets Regulatory Assets, Noncurrent Regulatory Assets of Variable Interest Entities (VIEs) Regulatory Assets Of Consolidated Variable Interest Entity Noncurrent Regulatory Assets of Consolidated Variable Interest Entities, Noncurrent. Long-Term Investments Long-term Investments Nuclear Decommissioning Trust (NDT) Fund Decommissioning Fund Investments Other Special Funds Other Special Funds Amounts Deposited to fund a qualified pension plan, non-qualified pension plans and a deferred compensation plan. Goodwill Goodwill Other Intangibles Intangible Assets, Net (Excluding Goodwill) Derivative Contracts Restricted Cash of VIEs Restricted Cash Noncurent Held By Consolidated Variable Interest Entities The noncurrent cash, cash equivalents and investments that is restricted as to withdrawal or usage. Restrictions may include legally restricted deposits held as compensating balances against borrowing arrangements, contracts entered into with others, or entity statements of intention with regard to particular deposits classified as long-term; that is not expected to be released from such existing restrictions within one year of the balance sheet date or operating cycle, whichever is longer. Excludes compensating balance arrangements that are not agreements which legally restrict the use of cash amounts shown on the balance sheet. Includes noncurrent cash equivalents and investments that are similarly restricted as to withdrawal, usage or disposal., held by consolidated variable interest entities, noncurrent Other Other Assets, Noncurrent Total Noncurrent Assets LIABILITIES AND CAPITALIZATION Liabilities and Equity [Abstract] CURRENT LIABILITIES Liabilities, Current [Abstract] Long-Term Debt Due Within One Year Long-term Debt, Current Maturities Securitization Debt of VIEs Due Within One Year Long-term Transition Bond, Current Commercial Paper and Loans Commercial Paper Accounts Payable Accounts Payable, Current Derivative Contracts Accounts Payable-Affiliated Companies, net Accounts Payable, Related Parties, Current Accrued Interest Interest Payable, Current Accrued Taxes Taxes Payable, Current Deferred Income Taxes Deferred Tax Liabilities, Net, Current Clean Energy Program Clean Energy Program Current Carrying value on the balance sheet for obligations of less than one year for renewable energy and energy efficiency programs the company is obligated to participate. Obligation to Return Cash Collateral Customer Collateral Liabilities Amounts of Cash Deposits Collected related to energy contract contractual obligations Regulatory Liabilities Regulatory Liability, Current Other Other Liabilities, Current Total Current Liabilities NONCURRENT LIABILITIES Liabilities, Noncurrent [Abstract] Deferred Income Taxes and Investment Tax Credits (ITC) Deferred Income Taxes and Other Tax Liabilities, Noncurrent Regulatory Liabilities Regulatory Liability, Noncurrent Regulatory Liabilities of VIEs Regulatory Liabilities Of Consolidated Variable Interest Entity Noncurrent Regulatory Liabilities of Consolidated Variable Interest Entity, Noncurrent Asset Retirement Obligations Asset Retirement Obligations, Noncurrent Other Postretirement Benefit (OPEB) Costs Other Postretirement Defined Benefit Plan, Liabilities, Noncurrent Accrued Pension Costs Defined Benefit Pension Plan, Liabilities, Noncurrent Environmental Costs Derivative Contracts Long-Term Accrued Taxes Liability for Uncertain Tax Positions, Noncurrent Other Other Liabilities, Noncurrent Total Noncurrent Liabilities COMMITMENTS AND CONTINGENT LIABILITIES (See Note 9) Commitments and Contingencies LONG-TERM DEBT Long-term Debt, Excluding Current Maturities [Abstract] Long-Term Debt Other Long-term Debt, Noncurrent Securitization Debt of VIEs Long-term Transition Bond, Noncurrent Project Level, Non-Recourse Debt Nonrecourse Debt Noncurrent The non-current portion of the entity's non-recourse debt. Non-recourse debt is secured by the capital stock, physical assets, contracts and cash flows of the related subsidiary. The risk is limited to the respective subsidiary business and is without recourse to the Parent Company and other subsidiaries. Total Long-Term Debt STOCKHOLDER'S EQUITY Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest [Abstract] Common Stock Common Stock, Value, Outstanding Treasury Stock, at cost Treasury Stock, Value Contributed Capital Contributed Capital Contributed Capital Basis Adjustment Basis Adjustment Basis Adjustment Retained Earnings Retained Earnings (Accumulated Deficit) Accumulated Other Comprehensive Income (Loss) Total Common Stockholders' Equity Stockholders' Equity Attributable to Parent Noncontrolling Interest Stockholders' Equity Attributable to Noncontrolling Interest Total Stockholder's Equity Total Capitalization Capitalization, Long-term Debt and Equity Future Periods [Axis] Future Periods [Axis] Future Periods [Axis] Future Periods [Domain] Future Periods [Domain] [Domain] for Future Periods [Axis] Through 2015 [Member] Through 2015 [Member] Through 2015 [Member] Fiscal Year 2013 [Member] Fiscal Year 2013 [Member] Fiscal Year 2013 [Member] Fiscal Year 2014 [Member] Fiscal Year 2014 [Member] Fiscal Year 2014 [Member] Fiscal Year 2015 [Member] Fiscal Year 2015 [Member] Fiscal Year 2015 [Member] Solar Loan Investment [Member] Solar Loan Investment [Member] Solar Loan Investment [Member] General Plant Assets [Member] General Plant Assets [Member] General Plant Assets [Member] Energy Holdings-Solar [Member] Energy Holdings Solar [Member] Energy Holdings Solar [Member] Increase in Projected Capital Expenditures Increase in Projected Capital Expenditures Increase in Projected Capital Expenditures Capital Expenditures Capital Expenditures Capital Expenditures Approximate amount committed Total expenditures to date Payments for Removal Costs Payments for Removal Costs Payments for Nuclear Fuel Payments for Nuclear Fuel Total Capital Expenditures Total Capital Expenditures Total Capital Expenditures Guarantee payment of obligations Guarantor Obligations, Current Carrying Value Disclosure Financing Receivables Gross And Net Lease Investment [Abstract] Disclosure - Financing Receivables (Gross And Net Lease Investment) [Abstract] Lease Receivables (net of Non-Recourse Debt) Estimated Residual Value of Leased Assets Leveraged Leases, Net Investment in Leveraged Leases Disclosure, Residual Value of Leased Assets Total Investment in Rental Receivables Leveraged Lease Rental Receivables Net Plus Estimated Residual Value Leveraged Lease Rental Receivables Net Plus Estimated Residual Value Unearned and Deferred Income Leveraged Leases, Net Investment in Leveraged Leases Disclosure, Deferred Income Gross Investments in Leases Leveraged Leases Gross Investment Leveraged Leases Gross Investment Deferred Tax Liabilities Leveraged Leases, Net Investment in Leveraged Leases Disclosure, Deferred Taxes Arising from Leveraged Leases Net Investments in Leases Leveraged Leases, Net Investment in Leveraged Leases Disclosure, Investment in Leveraged Leases, Net Disclosure Available For Sale Securities Value Of Securities That Have Been In An Unrealized Loss Position For Less Than And Greater Than 12 Months [Abstract] Disclosure - Available-For-Sale Securities (Value Of Securities That Have Been In An Unrealized Loss Position For Less Than And Greater Than 12 Months) [Abstract] Unrealized Loss Position Less Than 12 Months [Member] Unrealized Loss Position Less Than 12 Months [Member] Unrealized Loss Position Less Than 12 Months [Member] Unrealized Loss Position Greater Than 12 Months [Member] Unrealized Loss Position Greater Than 12 Months [Member] Unrealized Loss Position Greater Than 12 Months [Member] Fair Value Disclosure Related Party Transactions Schedule Of Related Party Transactions Payables [Abstract] Disclosure - Related-Party Transactions (Schedule Of Related Party Transactions, Payables) [Abstract] Power's Share Of PSE&G's Liability [Member] Power S Share Of Pse G S Liability [Member] Power's Share of PSE&G's Liability SREC Price Limit SREC Price Limit Limit for SREC and SACP prices charged to BGS suppliers from June 2008 to May 2010 Payable to Power through BGS and BGSS Contracts Payable To Affiliate Through Bgs And Bgss Contracts Payable to Power through BGS and BGSS Contracts Payable to Power Related to Gas Supply Hedges for BGSS Payable To Affiliate Related To Gas Supply Hedges For Bgss Payable to Power Related to Gas Supply Hedges for BGSS Payable to Power for SREC Liability Payable To Affiliate For Srec Liability Payable to Power for SREC Liability Receivable from PSEG Receivable From Parent Receivable from PSEG Receivable from Energy Holdings Long-Term Accrued Taxes Payable Accrued Liability for Excess SREC costs Accrued Liability For Excess Srec Costs Accrued Liability for Excess SREC costs PSEG To IRS [Member] Pseg To Irs [Member] PSEG To IRS [Member] IRS To PSEG [Member] Irs To Pseg [Member] IRS To PSEG [Member] IRS [Member] Irs [Member] IRS [Member] Unrecognized tax benefit potential increase on settlement with IRS Unrecognized Tax Benefit Potential Increase On Settlement With Irs Unrecognized tax benefit potential increase on settlement with IRS Financial statement tax reserves Financial Statement Tax Reserves Financial statement tax reserves Amount deposited with IRS to defray potential interest costs Amount Deposited With Irs To Defray Potential Interest Costs Amount Deposited With IRS To Defray Potential Interest Costs Tax And Interest Deficiency Tax And Interest Deficiency Tax and interest deficiency Estimate of tax interest potentially payable in current year from 2004 through 2006 tax years high estimate Estimate Of Tax Interest Potentially Payable In Current Year From Two Thousand Four Through Two Thousand Six Tax Years High Estimate Estimate of tax interest potentially payable in current year from two thousand four through two thousand six tax years high estimate Estimate of tax interest potentially payable in current year from 2007 through two 2010 years high estimate Estimate Of Tax Interest Potentially Payable In Current Year From Two Thousand Seven Through Two Thousand Ten Tax Years High Estimate Estimate of tax interest potentially payable in current year from two thousand seven through two thousand ten tax years high estimate Tax deduction for the accrued deficiency interest Tax Deduction For Accrued Deficiency Interest Tax deduction for the accrued deficiency interest Face Value Of Outstanding Guarantees, Current Exposure And Margin Positions Schedule of Guarantor Obligations [Table Text Block] Schedule of Capital Expenditures [Table Text Block] Schedule of Capital Expenditures [Table Text Block] Schedule of Capital Expenditures [Table Text Block] Contract For Anticipated BGS-Fixed Price Eligible Load Schedule of Long-term Contracts for Purchase of Electric Power [Table Text Block] Total Minimum Purchase Commitments Long-term Purchase Commitment [Table Text Block] Disclosure Financial Information By Business Segments Financial Information By Business Segments [Abstract] Disclosure - Financial Information By Business Segments (Financial Information By Business Segments) [Abstract] Schedule of Segment Reporting Information, by Segment [Table] Schedule of Segment Reporting Information, by Segment [Table] PSEG Other [Member] Pseg Other [Member] PSEG Other [Member] Consolidated [Member] Consolidated [Member] Consolidated Member Segment Reporting Information [Line Items] Segment Reporting Information [Line Items] Operating Revenues Segment Reporting Information, Revenue for Reportable Segment Income (Loss) From Continuing Operations Segment Reporting Information Income Loss From Continuing Operations Segment Reporting Information Income (Loss) from Continuing Operations Segment Earnings (Loss) Segments Earnings Loss Segments Earnings (Loss) Gross Additions to Long-Lived Assets Segment Reporting Information, Expenditures for Additions to Long-Lived Assets Total Assets Investments in Equity Method Subsidiaries Segment Reporting Investments In Equity Method Subsidiaries Segment Reporting Investments In Equity Method Subsidiaries Disclosure Variable Interest Entities V I Es [Abstract] Disclosure - Variable Interest Entities (VIEs) [Abstract] Variable Interest Entity, Number of Entities Variable Interest Entity, Number of Entities The number of variable interest entities consolidated by the company Maximum exposure to loss Variable Interest Entity, Reporting Entity Involvement, Maximum Loss Exposure, Amount Basic And Diluted Earnings Per Share Computation Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Dividend Payments On Common Stock Dividend Payments On Common Stock [Table Text Block] Dividend Payments On Common Stock Text Block Recent Accounting Standards Schedule of New Accounting Pronouncements and Changes in Accounting Principles [Table Text Block] Fair Values And Gross Unrealized Gains And Losses For The Securities Held In The NDT Fund Fair Values And Gross Unrealized Gains And Losses For Securities Held In Ndt Funds [Table Text Block] Fair values and gross unrealized gains and losses for the securities held in the NDT Funds Schedule Of Accounts Receivable And Accounts Payable in the NDT Funds Schedule Of Accounts Receivable And Accounts Payable in the NDT Funds [Table Text Block] Accounts Receivable and Accounts Payable Value Of Securities That Have Been In An Unrealized Loss Position For Less Than And Greater Than 12 Months Schedule Of Available For Sale Securities Continuous Unrealized Loss Positions [Table Text Block] Schedule Of Available For Sale Securities Continuous Unrealized Loss Positions [Text Block] Securities Held In The Rabbi Trusts Securities Held In Rabbi Trusts [Table Text Block] Securities Held In Rabbi Trusts [Text Block] Schedule of Accounts Receivable and Accounts Payable in the Rabbi Trust Funds [Table Text Block] Schedule of Accounts Receivable and Accounts Payable in the Rabbi Trust Funds [Table Text Block] [Table Text Block] for Schedule of Accounts Receivable and Accounts Payable in the Rabbi Trust Funds [Table] Proceeds From The Sales Of And The Net Realized Gains On Securities In The NDT Funds And Rabbi Trusts Available For Sale Securities Proceeds From Sales And Net Realized Gains [Table Text Block] Available For Sale Securities Proceeds From Sales And Net Realized Gains [Text Block] Amount Of Available-For-Sale Debt Securities By Maturity Periods Amount Of Available For Sale Debt Securities By Maturity Periods [Table Text Block] Amount Of Available-for-sale Debt Securities By Maturity Periods [Text Block] Fair Value Of The Rabbi Trusts Deferred Compensation Rabbi Trust Fair Value [Table Text Block] Deferred compensation, Rabbi Trust, Fair Value Organization and Basis of Presentation Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block]