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Risk Management and Fair Values (Assets And Liabilities At Fair Value On A Recurring Basis) (Details) - USD ($) $ in Thousands | Jun. 30, 2022 | Dec. 31, 2021
--- | --- | ---
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Cash Equivalents, at Carrying Value | $ 513,624 | $ 397,615
Assets at fair value on a recurring basis |  |
Securitization recovery trust account | 28,000 | 29,000
Replacement Reserve Escrow | 331,000 | 49,000
Liabilities at fair value on a recurring basis |  |
Assets, Fair Value Disclosure | 5,021,000 | 6,005,000
Gas Hedge Contracts [Member] |  |
Liabilities at fair value on a recurring basis |  |
Liabilities, Fair Value Disclosure on Recurring Basis |  | 7,000
Debt Securities [Member] |  |
Assets at fair value on a recurring basis |  |
Decommissioning Fund Investments, Fair Value | 1,693,000 | 2,177,000
Common trust funds valued using Net Asset Value [Domain] |  |
Assets at fair value on a recurring basis |  |
Decommissioning Fund Investments, Fair Value | 2,379,000 | 3,205,000
Gas Hedge Contracts Assets [Member] |  |
Assets at fair value on a recurring basis |  |
Derivative Asset | 46,000 | 11,000
Fixed Transmission Rights (FTRs) [Member] |  |
Assets at fair value on a recurring basis |  |
Derivative Asset | 12,000 | 4,000
Equity Securities [Member] |  |
Assets at fair value on a recurring basis |  |
Decommissioning Fund Investments, Fair Value | 18,000 | 132,000
Fair Value Inputs Level 1 [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Cash Equivalents, at Carrying Value | 514,000 | 398,000
Assets at fair value on a recurring basis |  |
Securitization recovery trust account | 28,000 | 29,000
Replacement Reserve Escrow | 331,000 | 49,000
Equity Securities, FV-NI | 18,000 | 132,000
Debt Securities | 598,000 | 770,000
Liabilities at fair value on a recurring basis |  |
Assets, Fair Value Disclosure | 1,526,000 | 1,384,000
Fair Value Inputs Level 1 [Member] | Gas Hedge Contracts [Member] |  |
Liabilities at fair value on a recurring basis |  |
Liabilities, Fair Value Disclosure on Recurring Basis |  | 7,000
Fair Value Inputs Level 1 [Member] | Gas Hedge Contracts Assets [Member] |  |
Assets at fair value on a recurring basis |  |
Derivative Asset | 37,000 | 6,000
Fair Value Inputs Level 1 [Member] | Fixed Transmission Rights (FTRs) [Member] |  |
Assets at fair value on a recurring basis |  |
Derivative Asset | 0 | 0
Fair Value, Inputs, Level 2 [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Cash Equivalents, at Carrying Value | 0 | 0
Assets at fair value on a recurring basis |  |
Securitization recovery trust account | 0 | 0
Replacement Reserve Escrow | 0 | 0
Equity Securities, FV-NI | 0 | 0
Debt Securities | 1,095,000 | 1,407,000
Liabilities at fair value on a recurring basis |  |
Assets, Fair Value Disclosure | 1,104,000 | 1,412,000
Fair Value, Inputs, Level 2 [Member] | Gas Hedge Contracts [Member] |  |
Liabilities at fair value on a recurring basis |  |
Liabilities, Fair Value Disclosure on Recurring Basis |  | 0
Fair Value, Inputs, Level 2 [Member] | Gas Hedge Contracts Assets [Member] |  |
Assets at fair value on a recurring basis |  |
Derivative Asset | 9,000 | 5,000
Fair Value, Inputs, Level 2 [Member] | Fixed Transmission Rights (FTRs) [Member] |  |
Assets at fair value on a recurring basis |  |
Derivative Asset | 0 | 0
Fair Value, Inputs, Level 3 [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Cash Equivalents, at Carrying Value | 0 | 0
Assets at fair value on a recurring basis |  |
Securitization recovery trust account | 0 | 0
Replacement Reserve Escrow | 0 | 0
Equity Securities, FV-NI | 0 | 0
Debt Securities | 0 | 0
Liabilities at fair value on a recurring basis |  |
Assets, Fair Value Disclosure | 12,000 | 4,000
Fair Value, Inputs, Level 3 [Member] | Gas Hedge Contracts [Member] |  |
Liabilities at fair value on a recurring basis |  |
Liabilities, Fair Value Disclosure on Recurring Basis |  | 0
Fair Value, Inputs, Level 3 [Member] | Gas Hedge Contracts Assets [Member] |  |
Assets at fair value on a recurring basis |  |
Derivative Asset | 0 | 0
Fair Value, Inputs, Level 3 [Member] | Fixed Transmission Rights (FTRs) [Member] |  |
Assets at fair value on a recurring basis |  |
Derivative Asset | 12,000 | 4,000
Entergy New Orleans [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Cash Equivalents, at Carrying Value | 25,665 | 42,836
Assets at fair value on a recurring basis |  |
Restricted Cash and Cash Equivalents, Current | 1,740 | 1,999
Liabilities at fair value on a recurring basis |  |
Assets, Fair Value Disclosure | 28,000 | 44,900
Entergy New Orleans [Member] | Gas Hedge Contracts [Member] |  |
Liabilities at fair value on a recurring basis |  |
Liabilities, Fair Value Disclosure on Recurring Basis | 200 | 500
Entergy New Orleans [Member] | Fixed Transmission Rights (FTRs) [Member] |  |
Assets at fair value on a recurring basis |  |
Derivative Asset | 600 | 100
Entergy New Orleans [Member] | Fair Value Inputs Level 1 [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Cash Equivalents, at Carrying Value | 25,700 | 42,800
Assets at fair value on a recurring basis |  |
Restricted Cash and Cash Equivalents, Current | 1,700 | 2,000
Liabilities at fair value on a recurring basis |  |
Assets, Fair Value Disclosure | 27,400 | 44,800
Entergy New Orleans [Member] | Fair Value Inputs Level 1 [Member] | Gas Hedge Contracts [Member] |  |
Liabilities at fair value on a recurring basis |  |
Liabilities, Fair Value Disclosure on Recurring Basis | 200 | 500
Entergy New Orleans [Member] | Fair Value Inputs Level 1 [Member] | Fixed Transmission Rights (FTRs) [Member] |  |
Assets at fair value on a recurring basis |  |
Derivative Asset | 0 | 0
Entergy New Orleans [Member] | Fair Value, Inputs, Level 2 [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Cash Equivalents, at Carrying Value | 0 | 0
Assets at fair value on a recurring basis |  |
Restricted Cash and Cash Equivalents, Current | 0 | 0
Liabilities at fair value on a recurring basis |  |
Assets, Fair Value Disclosure | 0 | 0
Entergy New Orleans [Member] | Fair Value, Inputs, Level 2 [Member] | Gas Hedge Contracts [Member] |  |
Liabilities at fair value on a recurring basis |  |
Liabilities, Fair Value Disclosure on Recurring Basis | 0 | 0
Entergy New Orleans [Member] | Fair Value, Inputs, Level 2 [Member] | Fixed Transmission Rights (FTRs) [Member] |  |
Assets at fair value on a recurring basis |  |
Derivative Asset | 0 | 0
Entergy New Orleans [Member] | Fair Value, Inputs, Level 3 [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Cash Equivalents, at Carrying Value | 0 | 0
Assets at fair value on a recurring basis |  |
Restricted Cash and Cash Equivalents, Current | 0 | 0
Liabilities at fair value on a recurring basis |  |
Assets, Fair Value Disclosure | 600 | 100
Entergy New Orleans [Member] | Fair Value, Inputs, Level 3 [Member] | Gas Hedge Contracts [Member] |  |
Liabilities at fair value on a recurring basis |  |
Liabilities, Fair Value Disclosure on Recurring Basis | 0 | 0
Entergy New Orleans [Member] | Fair Value, Inputs, Level 3 [Member] | Fixed Transmission Rights (FTRs) [Member] |  |
Assets at fair value on a recurring basis |  |
Derivative Asset | 600 | 100
Entergy Mississippi [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Cash Equivalents, at Carrying Value | 26,072 | 47,598
Assets at fair value on a recurring basis |  |
Replacement Reserve Escrow | 41,100 | 48,900
Liabilities at fair value on a recurring basis |  |
Assets, Fair Value Disclosure | 88,300 | 96,800
Entergy Mississippi [Member] | Gas Hedge Contracts [Member] |  |
Liabilities at fair value on a recurring basis |  |
Liabilities, Fair Value Disclosure on Recurring Basis |  | 6,700
Entergy Mississippi [Member] | Gas Hedge Contracts Assets [Member] |  |
Assets at fair value on a recurring basis |  |
Derivative Asset | 20,600 |
Entergy Mississippi [Member] | Fixed Transmission Rights (FTRs) [Member] |  |
Assets at fair value on a recurring basis |  |
Derivative Asset | 500 | 300
Entergy Mississippi [Member] | Fair Value Inputs Level 1 [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Cash Equivalents, at Carrying Value | 26,100 | 47,600
Assets at fair value on a recurring basis |  |
Replacement Reserve Escrow | 41,100 | 48,900
Liabilities at fair value on a recurring basis |  |
Assets, Fair Value Disclosure | 87,800 | 96,500
Entergy Mississippi [Member] | Fair Value Inputs Level 1 [Member] | Gas Hedge Contracts [Member] |  |
Liabilities at fair value on a recurring basis |  |
Liabilities, Fair Value Disclosure on Recurring Basis |  | 6,700
Entergy Mississippi [Member] | Fair Value Inputs Level 1 [Member] | Gas Hedge Contracts Assets [Member] |  |
Assets at fair value on a recurring basis |  |
Derivative Asset | 20,600 |
Entergy Mississippi [Member] | Fair Value Inputs Level 1 [Member] | Fixed Transmission Rights (FTRs) [Member] |  |
Assets at fair value on a recurring basis |  |
Derivative Asset | 0 | 0
Entergy Mississippi [Member] | Fair Value, Inputs, Level 2 [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Cash Equivalents, at Carrying Value | 0 | 0
Assets at fair value on a recurring basis |  |
Replacement Reserve Escrow | 0 | 0
Liabilities at fair value on a recurring basis |  |
Assets, Fair Value Disclosure | 0 | 0
Entergy Mississippi [Member] | Fair Value, Inputs, Level 2 [Member] | Gas Hedge Contracts [Member] |  |
Liabilities at fair value on a recurring basis |  |
Liabilities, Fair Value Disclosure on Recurring Basis |  | 0
Entergy Mississippi [Member] | Fair Value, Inputs, Level 2 [Member] | Gas Hedge Contracts Assets [Member] |  |
Assets at fair value on a recurring basis |  |
Derivative Asset | 0 |
Entergy Mississippi [Member] | Fair Value, Inputs, Level 2 [Member] | Fixed Transmission Rights (FTRs) [Member] |  |
Assets at fair value on a recurring basis |  |
Derivative Asset | 0 | 0
Entergy Mississippi [Member] | Fair Value, Inputs, Level 3 [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Cash Equivalents, at Carrying Value | 0 | 0
Assets at fair value on a recurring basis |  |
Replacement Reserve Escrow | 0 | 0
Liabilities at fair value on a recurring basis |  |
Assets, Fair Value Disclosure | 500 | 300
Entergy Mississippi [Member] | Fair Value, Inputs, Level 3 [Member] | Gas Hedge Contracts [Member] |  |
Liabilities at fair value on a recurring basis |  |
Liabilities, Fair Value Disclosure on Recurring Basis |  | 0
Entergy Mississippi [Member] | Fair Value, Inputs, Level 3 [Member] | Gas Hedge Contracts Assets [Member] |  |
Assets at fair value on a recurring basis |  |
Derivative Asset | 0 |
Entergy Mississippi [Member] | Fair Value, Inputs, Level 3 [Member] | Fixed Transmission Rights (FTRs) [Member] |  |
Assets at fair value on a recurring basis |  |
Derivative Asset | 500 | 300
Entergy Louisiana [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Cash Equivalents, at Carrying Value | 65,717 | 18,378
Assets at fair value on a recurring basis |  |
Replacement Reserve Escrow | 290,100 |
Liabilities at fair value on a recurring basis |  |
Assets, Fair Value Disclosure | 2,141,800 | 2,144,500
Entergy Louisiana [Member] | Debt Securities [Member] |  |
Assets at fair value on a recurring basis |  |
Decommissioning Fund Investments, Fair Value | 733,300 | 794,200
Entergy Louisiana [Member] | Common trust funds valued using Net Asset Value [Domain] |  |
Assets at fair value on a recurring basis |  |
Decommissioning Fund Investments, Fair Value | 1,010,600 | 1,300,100
Entergy Louisiana [Member] | Gas Hedge Contracts Assets [Member] |  |
Assets at fair value on a recurring basis |  |
Derivative Asset | 24,800 | 11,000
Entergy Louisiana [Member] | Fixed Transmission Rights (FTRs) [Member] |  |
Assets at fair value on a recurring basis |  |
Derivative Asset | 4,700 | 600
Entergy Louisiana [Member] | Equity Securities [Member] |  |
Assets at fair value on a recurring basis |  |
Decommissioning Fund Investments, Fair Value | 12,600 | 20,200
Entergy Louisiana [Member] | Fair Value Inputs Level 1 [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Cash Equivalents, at Carrying Value | 65,700 | 18,400
Assets at fair value on a recurring basis |  |
Replacement Reserve Escrow | 290,100 |
Equity Securities, FV-NI | 12,600 | 20,200
Debt Securities | 225,000 | 262,600
Liabilities at fair value on a recurring basis |  |
Assets, Fair Value Disclosure | 609,500 | 306,900
Entergy Louisiana [Member] | Fair Value Inputs Level 1 [Member] | Gas Hedge Contracts Assets [Member] |  |
Assets at fair value on a recurring basis |  |
Derivative Asset | 16,100 | 5,700
Entergy Louisiana [Member] | Fair Value Inputs Level 1 [Member] | Fixed Transmission Rights (FTRs) [Member] |  |
Assets at fair value on a recurring basis |  |
Derivative Asset | 0 | 0
Entergy Louisiana [Member] | Fair Value, Inputs, Level 2 [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Cash Equivalents, at Carrying Value | 0 | 0
Assets at fair value on a recurring basis |  |
Replacement Reserve Escrow | 0 |
Equity Securities, FV-NI | 0 | 0
Debt Securities | 508,300 | 531,600
Liabilities at fair value on a recurring basis |  |
Assets, Fair Value Disclosure | 517,000 | 536,900
Entergy Louisiana [Member] | Fair Value, Inputs, Level 2 [Member] | Gas Hedge Contracts Assets [Member] |  |
Assets at fair value on a recurring basis |  |
Derivative Asset | 8,700 | 5,300
Entergy Louisiana [Member] | Fair Value, Inputs, Level 2 [Member] | Fixed Transmission Rights (FTRs) [Member] |  |
Assets at fair value on a recurring basis |  |
Derivative Asset | 0 | 0
Entergy Louisiana [Member] | Fair Value, Inputs, Level 3 [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Cash Equivalents, at Carrying Value | 0 | 0
Assets at fair value on a recurring basis |  |
Replacement Reserve Escrow | 0 |
Equity Securities, FV-NI | 0 | 0
Debt Securities | 0 | 0
Liabilities at fair value on a recurring basis |  |
Assets, Fair Value Disclosure | 4,700 | 600
Entergy Louisiana [Member] | Fair Value, Inputs, Level 3 [Member] | Gas Hedge Contracts Assets [Member] |  |
Assets at fair value on a recurring basis |  |
Derivative Asset | 0 | 0
Entergy Louisiana [Member] | Fair Value, Inputs, Level 3 [Member] | Fixed Transmission Rights (FTRs) [Member] |  |
Assets at fair value on a recurring basis |  |
Derivative Asset | 4,700 | 600
Entergy Arkansas [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Cash Equivalents, at Carrying Value | 58,167 | 4,760
Liabilities at fair value on a recurring basis |  |
Assets, Fair Value Disclosure | 1,257,400 | 1,445,500
Entergy Arkansas [Member] | Debt Securities [Member] |  |
Assets at fair value on a recurring basis |  |
Decommissioning Fund Investments, Fair Value | 484,800 | 526,300
Entergy Arkansas [Member] | Common trust funds valued using Net Asset Value [Domain] |  |
Assets at fair value on a recurring basis |  |
Decommissioning Fund Investments, Fair Value | 705,900 | 895,400
Entergy Arkansas [Member] | Fixed Transmission Rights (FTRs) [Member] |  |
Assets at fair value on a recurring basis |  |
Derivative Asset | 4,400 | 2,300
Entergy Arkansas [Member] | Equity Securities [Member] |  |
Assets at fair value on a recurring basis |  |
Decommissioning Fund Investments, Fair Value | 4,100 | 16,700
Entergy Arkansas [Member] | Fair Value Inputs Level 1 [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Cash Equivalents, at Carrying Value | 58,200 | 4,800
Assets at fair value on a recurring basis |  |
Equity Securities, FV-NI | 4,100 | 16,700
Debt Securities | 131,600 | 119,500
Liabilities at fair value on a recurring basis |  |
Assets, Fair Value Disclosure | 193,900 | 141,000
Entergy Arkansas [Member] | Fair Value Inputs Level 1 [Member] | Fixed Transmission Rights (FTRs) [Member] |  |
Assets at fair value on a recurring basis |  |
Derivative Asset | 0 | 0
Entergy Arkansas [Member] | Fair Value, Inputs, Level 2 [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Cash Equivalents, at Carrying Value | 0 | 0
Assets at fair value on a recurring basis |  |
Equity Securities, FV-NI | 0 | 0
Debt Securities | 353,200 | 406,800
Liabilities at fair value on a recurring basis |  |
Assets, Fair Value Disclosure | 353,200 | 406,800
Entergy Arkansas [Member] | Fair Value, Inputs, Level 2 [Member] | Fixed Transmission Rights (FTRs) [Member] |  |
Assets at fair value on a recurring basis |  |
Derivative Asset | 0 | 0
Entergy Arkansas [Member] | Fair Value, Inputs, Level 3 [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Cash Equivalents, at Carrying Value | 0 | 0
Assets at fair value on a recurring basis |  |
Equity Securities, FV-NI | 0 | 0
Debt Securities | 0 | 0
Liabilities at fair value on a recurring basis |  |
Assets, Fair Value Disclosure | 4,400 | 2,300
Entergy Arkansas [Member] | Fair Value, Inputs, Level 3 [Member] | Fixed Transmission Rights (FTRs) [Member] |  |
Assets at fair value on a recurring basis |  |
Derivative Asset | 4,400 | 2,300
Entergy Texas [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Cash Equivalents, at Carrying Value | 14,351 | 0
Assets at fair value on a recurring basis |  |
Restricted Cash and Cash Equivalents, Current | 26,551 | 26,629
Liabilities at fair value on a recurring basis |  |
Assets, Fair Value Disclosure | 42,500 | 27,400
Entergy Texas [Member] | Fixed Transmission Rights (FTRs) [Member] |  |
Assets at fair value on a recurring basis |  |
Derivative Asset | 1,500 | 800
Entergy Texas [Member] | Fair Value Inputs Level 1 [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Cash Equivalents, at Carrying Value | 14,400 |
Assets at fair value on a recurring basis |  |
Restricted Cash and Cash Equivalents, Current | 26,600 | 26,600
Liabilities at fair value on a recurring basis |  |
Assets, Fair Value Disclosure | 41,000 | 26,600
Entergy Texas [Member] | Fair Value Inputs Level 1 [Member] | Fixed Transmission Rights (FTRs) [Member] |  |
Assets at fair value on a recurring basis |  |
Derivative Asset | 0 | 0
Entergy Texas [Member] | Fair Value, Inputs, Level 2 [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Cash Equivalents, at Carrying Value | 0 |
Assets at fair value on a recurring basis |  |
Restricted Cash and Cash Equivalents, Current | 0 | 0
Liabilities at fair value on a recurring basis |  |
Assets, Fair Value Disclosure | 0 | 0
Entergy Texas [Member] | Fair Value, Inputs, Level 2 [Member] | Fixed Transmission Rights (FTRs) [Member] |  |
Assets at fair value on a recurring basis |  |
Derivative Asset | 0 | 0
Entergy Texas [Member] | Fair Value, Inputs, Level 3 [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Cash Equivalents, at Carrying Value | 0 |
Assets at fair value on a recurring basis |  |
Restricted Cash and Cash Equivalents, Current | 0 | 0
Liabilities at fair value on a recurring basis |  |
Assets, Fair Value Disclosure | 1,500 | 800
Entergy Texas [Member] | Fair Value, Inputs, Level 3 [Member] | Fixed Transmission Rights (FTRs) [Member] |  |
Assets at fair value on a recurring basis |  |
Derivative Asset | 1,500 | 800
System Energy [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Cash Equivalents, at Carrying Value | 134,648 | 89,114
Liabilities at fair value on a recurring basis |  |
Assets, Fair Value Disclosure | 1,273,400 | 1,474,400
System Energy [Member] | Debt Securities [Member] |  |
Assets at fair value on a recurring basis |  |
Decommissioning Fund Investments, Fair Value | 474,200 | 524,500
System Energy [Member] | Common trust funds valued using Net Asset Value [Domain] |  |
Assets at fair value on a recurring basis |  |
Decommissioning Fund Investments, Fair Value | 662,900 | 847,900
System Energy [Member] | Equity Securities [Member] |  |
Assets at fair value on a recurring basis |  |
Decommissioning Fund Investments, Fair Value | 1,700 | 12,900
System Energy [Member] | Fair Value Inputs Level 1 [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Cash Equivalents, at Carrying Value | 134,600 | 89,100
Assets at fair value on a recurring basis |  |
Equity Securities, FV-NI | 1,700 | 12,900
Debt Securities | 241,100 | 273,000
Liabilities at fair value on a recurring basis |  |
Assets, Fair Value Disclosure | 377,400 | 375,000
System Energy [Member] | Fair Value, Inputs, Level 2 [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Cash Equivalents, at Carrying Value | 0 | 0
Assets at fair value on a recurring basis |  |
Equity Securities, FV-NI | 0 | 0
Debt Securities | 233,100 | 251,500
Liabilities at fair value on a recurring basis |  |
Assets, Fair Value Disclosure | 233,100 | 251,500
System Energy [Member] | Fair Value, Inputs, Level 3 [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Cash Equivalents, at Carrying Value | 0 | 0
Assets at fair value on a recurring basis |  |
Equity Securities, FV-NI | 0 | 0
Debt Securities | 0 | 0
Liabilities at fair value on a recurring basis |  |
Assets, Fair Value Disclosure | $ 0 | $ 0

X
- Definition Securitization recovery trust account + References No definition available. + Details
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Balance Type: | debit
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- Definition Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123874694&loc=d3e19207-110258 + Details
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Balance Type: | debit
Period Type: | instant

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- References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Amount of short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.1) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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- Definition Amount, after allowance for credit loss, of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), investment in debt security measured at amortized cost (held-to-maturity), and investment in debt security measured at fair value with change in fair value recognized in net income (trading). + References No definition available. + Details
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- Definition The fair value of investments held in a trust fund to pay for the costs of decontaminating and decommissioning facilities, whether such amount is presented as a separate caption or as a parenthetical disclosure on the balance sheet. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 410 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6392692&loc=d3e7535-110849 + Details
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