Regulatory charge, net of tax

No definition available.

Name:	etr_RegulatoryChargeNetOfTax
Namespace Prefix:	etr_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Regulatory Liability For Income Taxes - Current and Non Current

+ References

No definition available.

+ Details

Name:	etr_RegulatoryLiabilityForIncomeTaxesCurrentandNonCurrent
Namespace Prefix:	etr_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Percent of domestic statutory tax rate of respective state applicable to pretax income (loss)

+ References

No definition available.

+ Details

Name:	etr_StateEffectiveIncomeTaxRatePercent
Namespace Prefix:	etr_
Data Type:	dtr-types1:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

The increase (decrease) during the reporting period in regulated liabilities. Regulated liabilities are created when regulatory agency permits an entity to defer revenues to the balance sheet.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 45
-Paragraph 28
-Subparagraph (a)
-SubTopic 10
-Topic 230
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482740/230-10-45-28

+ Details

Name:	us-gaap_IncreaseDecreaseInRegulatoryLiabilities
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The amount for the individual regulatory noncurrent liability as itemized in a table of regulatory noncurrent liabilities as of the end of the period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.24)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1

+ Details

Name:	us-gaap_RegulatoryLiabilityNoncurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Details

Name:	dei_LegalEntityAxis=etr_EntergyNewOrleansMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	dei_LegalEntityAxis=etr_EntergyArkansasMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RegulatoryLiabilityAxis=etr_CreditsExpectedToBeSharedWithCustomersFromResolutionOfThe20162018IRSAuditMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Income Taxes (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended		5 Months Ended	6 Months Ended		12 Months Ended
Income Taxes (Narrative) (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023	May 31, 2024	Jun. 30, 2024	Jun. 30, 2023	Dec. 31, 2024	Apr. 30, 2024
Regulatory Liability, Noncurrent		$ 3,116,926		$ 3,488,314
Increase (Decrease) in Regulatory Liabilities				380,394	$ 308,058
Entergy New Orleans [Member]
Regulatory Liability, Noncurrent		90,434		259,613
Increase (Decrease) in Regulatory Liabilities				167,529	30,722
Entergy Arkansas [Member]
Regulatory Liability, Noncurrent		759,181		803,680
Increase (Decrease) in Regulatory Liabilities				71,529	$ 97,349
State Effective Income Tax Rate, Percent			4.80%
Regulatory Liability For Income Taxes - Current and Non Current				$ 31,000
Entergy Arkansas [Member] \| Subsequent Event [Member]
State Effective Income Tax Rate, Percent						4.30%
Credits expected to be shared with customers from resolution of the 2016-2018 IRS audit [Member] \| Entergy New Orleans [Member]
Regulatory Liability, Noncurrent	$ 138,000	60,000					$ 138,000
Regulatory charge, net of tax	57,000	$ 44,000
Increase (Decrease) in Regulatory Liabilities	$ 78,000