Master Trust EBP, Master Trust [Policy Text Block] Entity tax identification number Entity Tax Identification Number Investments at fair value EBP, Investment, Fair Value Maximum Maximum [Member] Annual company retirement contribution, percentage of base wage or salary EBP, Employer Contribution, Annual Fixed Rate Contribution, Percentage EBP, Employer Contribution, Annual Fixed Rate Contribution, Percentage Legal Entity [Axis] Legal Entity [Axis] Statistical Measurement [Domain] Statistical Measurement [Domain] EBP, Description of Plan [Table] EBP, Description of Plan [Table] Adjustment from contract value to fair value (wrapper value) for fully benefit-responsive investment contracts EBP, Reconciliation to Form 5500, Change in Net Asset Available for Benefit, Current Period, Decrease from Contract Value to Current Value EBP, Reconciliation to Form 5500, Change in Net Asset Available for Benefit, Current Period, Decrease from Contract Value to Current Value Involuntary cash-out limit EBP, Involuntary Cash-Out Limit EBP, Involuntary Cash-Out Limit EBP, Related Party and Party-in-Interest Transactions [Table] EBP, Related Party and Party-in-Interest Transactions [Table] EBP 020 EBP 020 [Member] EBP 020 EBP, Fully Benefit-Responsive Investment Contract [Table] EBP, Fully Benefit-Responsive Investment Contract [Table] Annual retirement contributions EBP, Participant And Employer Contribution, Receivable EBP, Participant And Employer Contribution, Receivable Brokerage accounts EBP, Self-Directed Brokerage Account [Member] Total deductions EBP, Change in Net Asset Available for Benefit, Decrease Maximum loan amount EBP, Note Receivable from Participant, Account, Maximum Borrowing, Amount Matched percentage EBP, Participant Contribution, Maximum Annual Contribution to Eligible Compensation, Percentage EBP, Participant Contribution, Maximum Annual Contribution to Eligible Compensation, Percentage Fair Value Measurements EBP, Investment, Fair Value and NAV [Text Block] Minimum loan amount EBP, Note Receivable from Participant, Account, Minimum Borrowing, Amount Common stock market value, per share (in usd per share) EBP, Investment, Year-End Market Price Per Share EBP, Investment, Year-End Market Price Per Share EBP, Fully Benefit-Responsive Investment Contract [Abstract] Money market accounts Money Market Funds [Member] EBP, Nonconsolidated, Plan Interest in Master Trust EBP, Nonconsolidated, Plan Interest in Master Trust [Member] Level 1 Fair Value, Inputs, Level 1 [Member] EBP, Reconciliation of Financial Statement to Form 5500 EBP, Reconciliation of Financial Statement to Form 5500 [Table Text Block] Income recognition EBP, Income Recognition [Policy Text Block] EBP, Income Recognition EBP, Investment, Fair Value and NAV [Abstract] Reverse: Prior year adjustment from contract value to fair value (wrapper value) for fully benefit-responsive investment contracts EBP, Reconciliation to Form 5500, Change in Net Asset Available for Benefit, Prior Period, Increase from Contract Value to Current Value EBP, Reconciliation to Form 5500, Change in Net Asset Available for Benefit, Prior Period, Increase from Contract Value to Current Value Statistical Measurement [Axis] Statistical Measurement [Axis] Additions to Net Assets attributed to: EBP, Change in Net Asset Available for Benefit, Increase [Abstract] EBP, Statement of Change in Net Asset Available for Benefit [Table] EBP, Statement of Change in Net Asset Available for Benefit [Table] Payment of benefits EBP, Payment to Participant [Policy Text Block] EBP, Master Trust [Line Items] EBP, Master Trust [Line Items] Amendment Flag Amendment Flag Participant EBP, Change in Net Asset Available for Benefit, Increase from Participant Contribution Participant loans treated as deemed distributions, including accrued interest Deemed loan distributions EBP, Reconciliation to Form 5500, Net Asset Available for Benefit, Deemed Distribution Basis of presentation EBP, Basis of Accounting [Policy Text Block] EBP, Schedule of Asset Held for Investment [Table] EBP, Schedule of Asset Held for Investment [Table] Total investments EBP, Investment, Plan Interest in Master Trust, Fair and Contract Value Maximum vesting age EBP, Employer Contribution Maximum Vesting Age EBP, Employer Contribution Maximum Vesting Age EBP, Description of Plan and Accounting Change [Abstract] RECEIVABLES: EBP, Receivable [Abstract] Master Trust Balances EBP, Investment, Excluding Plan Interest in Master Trust, Fair and Contract Value [Abstract] EBP, Investment, Fair Value and NAV EBP, Investment, Fair Value and NAV [Table Text Block] Common stock Common Stock [Member] Investments [Domain] Investments [Domain] EBP, Master Trust [Abstract] Fully benefit-responsive investment contracts at contract value EBP, Investment, Plan Interest in Master Trust, Contract Value Use of estimates in the preparation of financial statements EBP, Use of Estimate [Policy Text Block] Schedule of Assets (Held at End of Year) EBP, Schedule of Asset Held for Investment [Text Block] Cover [Abstract] Minimum Minimum [Member] Investment Type [Axis] Investment Type [Axis] Total contributions EBP, Change in Net Asset Available for Benefit, Increase from Contribution Net realized and unrealized appreciation of investments EBP, Change in Net Asset Available for Benefit, Increase (Decrease) from Gain (Loss) on Investment Break in service, period EBP, Break In Service, Period EBP, Break In Service, Period EBP, Description of Plan [Line Items] EBP, Description of Plan [Line Items] Plan number EBP, Plan Number Maximum borrowing term, general loan EBP, Note Receivable From Participant, General Loan, Maximum Borrowing Term EBP, Note Receivable From Participant, General Loan, Maximum Borrowing Term Reasonable number of days, after hire EBP, Requisite Service Period EBP, Requisite Service Period Other debit adjustments - net EBP, Change in Net Asset Available for Benefit, Increase (Decrease) from Other Investment Income (Loss) EBP, Investment, Fair Value and NAV [Line Items] EBP, Investment, Fair Value and NAV [Line Items] General Description of the Plan EBP, Description of Plan [Text Block] EBP, Statement of Change in Net Asset Available for Benefit [Line Items] EBP, Statement of Change in Net Asset Available for Benefit [Line Items] EBP, Statement of Net Asset Available for Benefit [Table] EBP, Statement of Net Asset Available for Benefit [Table] Reverse: Prior year participant loans treated as deemed distributions, including accrued interest EBP, Reconciliation to Form 5500, Change in Net Asset Available for Benefit, Prior Period, Increase from Deemed Distribution Adjustment from contract value to fair value (wrapper value) for fully benefit-responsive investment contracts EBP, Reconciliation to Form 5500, Net Asset Available for Benefit, Contract Value to Current Value Adjustment EBP, Schedule of Asset Held for Investment [Line Items] EBP, Schedule of Asset Held for Investment [Line Items] Interest income on notes receivable from participants EBP, Change in Net Asset Available for Benefit, Increase from Interest Income on Investment EBP, Nonconsolidated, Master Trust and Plan Interest in Master Trust [Domain] EBP, Nonconsolidated, Master Trust and Plan Interest in Master Trust [Domain] EBP, Employer, Common Stock EBP, Employer, Common Stock [Member] EBP, Schedule of Asset Held for Investment [Abstract] EBP, Accounting Policy [Table] EBP, Accounting Policy [Table] Total additions EBP, Change in Net Asset Available for Benefit, Increase Maximum borrowing term, primary residence EBP, Note Receivable From Participant, Account, Primary Residence, Maximum Borrowing Term EBP, Note Receivable From Participant, Account, Primary Residence, Maximum Borrowing Term Cumulative amount to be distributed EBP, Inactive Accounts, Cumulative Distributions To Participants EBP, Inactive Accounts, Cumulative Distributions To Participants Administrative fees EBP, Change in Net Asset Available for Benefit, Decrease from Administrative Expense Maximum percentage of account invested in fund EBP, Investment, Participant, Percentage Of Investment In Fund, Maximum EBP, Investment, Participant, Percentage Of Investment In Fund, Maximum Fully benefit- responsive investment contracts at contract value EBP, Investment, Contract Value Risk and uncertainties EBP, Risk and Uncertainty [Policy Text Block] Document Information [Line Items] Document Information [Line Items] Vesting period EBP, Employer Contribution Vesting Service Period EBP, Employer Contribution Vesting Service Period Interest in Master Trust EBP, Master Trust [Text Block] Plan interest in Master Trust: EBP, Investment, Plan Interest in Master Trust, Fair and Contract Value [Abstract] EBP, Statement of Change in Net Asset Available for Benefit [Abstract] Level 2 Fair Value, Inputs, Level 2 [Member] Participant loans treated as deemed distributions, including accrued interest EBP, Reconciliation to Form 5500, Change in Net Asset Available for Benefit, Current Period, Decrease from Deemed Distribution Net income per Form 5500 EBP, Form 5500 Caption, Net Income (Loss) EBP, Fully Benefit-Responsive Investment Contract [Line Items] EBP, Fully Benefit-Responsive Investment Contract [Line Items] Employer - net of forfeitures EBP, Change in Net Asset Available for Benefit, Increase from Employer Contribution, Cash and Noncash EBP, Tax Status [Table] EBP, Tax Status [Table] Net increase in Net Assets Increase in net assets per the financial statements EBP, Change in Net Asset Available for Benefit, Increase (Decrease) Related Party Transactions and Exempt Party-In-Interest Transactions EBP, Related Party and Party-in-Interest Transactions [Text Block] Total investments EBP, Investment, Fair and Contract Value EBP, Related Party and Party-in-Interest Transactions [Abstract] EBP, Accounting Policy, Accounting Standard Update, and Change in Accounting Principle [Abstract] Total receivables EBP, Receivable Automatic rate EBP, Participant Contribution, Automatic, Deferral Rate Dividends EBP, Change in Net Asset Available for Benefit, Increase from Dividend Income on Investment Payments to participants or beneficiaries EBP, Change in Net Asset Available for Benefit, Decrease from Payment to Participant Investments at fair value Total investments at fair value EBP, Investment, Plan Interest in Master Trust, Fair Value Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV [Domain] EBP, Statement of Net Asset Available for Benefit [Abstract] EBP, Accounting Policy [Line Items] EBP, Accounting Policy [Line Items] EBP, Tax Status [Abstract] EBP, Reconciliation of Financial Statement to Form 5500 [Table] EBP, Reconciliation of Financial Statement to Form 5500 [Table] Investment Contracts With Insurance Companies EBP, Investment [Text Block] EBP, Investment Plan interest in Master Trust investment income EBP, Change in Net Asset Available for Benefit, Increase (Decrease) from Change in Plan Interest in Master Trust EBP, Reconciliation of Financial Statement to Form 5500 [Line Items] EBP, Reconciliation of Financial Statement to Form 5500 [Line Items] General administrative expenses EBP, Expense [Policy Text Block] Reconciliation to Form 5500 EBP, Reconciliation of Financial Statement to Form 5500 [Text Block] Current value EBP, Asset Held for Investment, Participant Loan, after Deemed Distribution Investment valuation EBP, Investment [Policy Text Block] EBP, Master Trust [Table] EBP, Master Trust [Table] Total Fair Value, Inputs, Level 1, Level 2, and Level 3 [Member] Document Type Document Type Entergy Savings Plan IX Termination EBP, Plan Termination [Text Block] Entity Central Index Key Entity Central Index Key Participant loan, interest rate EBP, Asset Held for Investment, Participant Loan, Interest Rate EBP, Reconciliation of Financial Statement to Form 5500 [Abstract] Common Trust Funds Common Collective Trust [Member] Net Assets Available for Benefits: EBP, Net Asset Available for Benefit [Abstract] EBP, Tax Status [Line Items] EBP, Tax Status [Line Items] EBP, Subsequent Event [Table] EBP, Subsequent Event [Table] Deductions from Net Assets attributed to: EBP, Change in Net Asset Available for Benefit, Decrease [Abstract] Reduction in company matching contributions EBP, Forfeited Nonvested Account, Decrease from Employer Contribution Notes receivable from participants EBP, Note Receivable from Participant EBP, Nonconsolidated, Master Trust EBP, Nonconsolidated, Master Trust [Member] Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] Summary of Significant Accounting Policies EBP, Summary of Accounting Policy [Text Block] Entity Registrant Name Entity Registrant Name EBP, Master Trust EBP, Master Trust [Table Text Block] EBP, Subsequent Event [Abstract] Subsequent Events EBP, Subsequent Event [Text Block] Tax Status EBP, Tax Status [Text Block] Loan amount, maximum percentage of account balance EBP, Note Receivable from Participant, Account, Maximum Borrowing, to Total Account, Percentage EBP, Subsequent Event [Line Items] EBP, Subsequent Event [Line Items] Document Information [Table] Document Information [Table] Annual increase in automatic rate EBP, Participant Contribution, Automatic, Annual Increase Deferral Rate EBP, Participant Contribution, Automatic, Annual Increase Deferral Rate Supplemental compensation contributed maximum percentage EBP, Participant Contribution, Pretax, Maximum Annual Supplemental Compensation to Total Compensation, Percentage EBP, Participant Contribution, Pretax, Maximum Annual Supplemental Compensation to Total Compensation, Percentage Note receivable from participants EBP, Note Receivable from Participant [Policy Text Block] Total investment income EBP, Change in Net Asset Available for Benefit, Increase (Decrease) from Income (Loss) on Investment EBP, Nonconsolidated, Master Trust and Plan Interest in Master Trust [Axis] EBP, Nonconsolidated, Master Trust and Plan Interest in Master Trust [Axis] Interest rate EBP, Participant Loan, Basis Spread On Variable Rate EBP, Participant Loan, Basis Spread On Variable Rate EBP, Related Party and Party-in-Interest Transactions [Line Items] EBP, Related Party and Party-in-Interest Transactions [Line Items] Level 3 Fair Value, Inputs, Level 3 [Member] Net Assets Available for Benefits Beginning of Year End of Year Net Assets Available for Benefits EBP, Net Asset Available for Benefit Entity [Domain] Entity [Domain] Contributions: EBP, Change in Net Asset Available for Benefit, Increase from Contribution [Abstract] Forfeiture account balance EBP, Forfeited Nonvested Account Net assets per Form 5500 EBP, Form 5500 Caption, Net Assets Fair value measured at net asset value per share Fair Value Measured at Net Asset Value Per Share [Member] EBP, Investment, Fair Value and NAV [Table] EBP, Investment, Fair Value and NAV [Table] EBP, Statement of Net Asset Available for Benefit [Line Items] EBP, Statement of Net Asset Available for Benefit [Line Items]