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Asset Retirement Obligations (Tables)

12 Months Ended

Dec. 31, 2025

Schedule of Regulatory Assets [Table Text Block]

Entergy

			2025						2024
			(In Millions)
Asset retirement obligation - recovery dependent upon timing of decommissioning of nuclear units or shutdown of non-nuclear power plants and solar facilities (Note 9) (a)			$1,437.9						$1,358.7
Removal costs (Note 9)			1,178.9						1,107.6
Pension & postretirement costs (Note 11 - Qualified Pension Plans, Other Postretirement Benefits, and Non-Qualified Pension Plans) (a)			1,067.2						1,207.6
Storm damage costs, including hurricane costs - recovered through securitization and retail rates (Note 2 - Storm Cost Recovery Filings with Retail Regulators and Note 5 - Securitization Bonds)			481.4						547.3
Qualified pension settlement cost deferral - recovered through June 2047 (Note 11 - Qualified Pension Settlement Cost)			200.2						227.1
Retail rate deferrals - recovered through formula rates or rate riders as rates are redetermined by retail regulators			140.5						195.1
Retired electric and gas meters - recovered through retail rates as determined by retail regulators (Note 2 - Retail Rate Proceedings)			117.9						135.7
Non-service pension & postretirement costs (Note 11 - Accounting for Pension and Other Postretirement Benefits)			73.0						180.0
Advanced metering system surcharge for residential customers - recovered through December 2029			53.7						39.7
Unamortized loss on reacquired debt - recovered over term of debt			53.6						57.9
Production tax credits (Note 3 - Other Tax Matters - Inflation Reduction Act of 2022) (b)			47.9						—
Deferred COVID-19 costs - recovered through retail rates as determined by retail regulators (Note 2 - Retail Rate Proceedings)			40.3						104.0
Retired distribution plant - resiliency plan - recovered over a 33-year period			22.4						—
Formula rate plan historical year rate adjustment (Note 2 - Retail Rate Proceedings) (c)			28.3						15.5
Pension & postretirement benefits expense deferral - recovered through retail rates (Note 2 - Retail Rate Proceedings and Note 11 - Entergy Texas Reserve)			0.9						15.0
Other			61.9						99.7
Entergy Total (d)			$5,006.0						$5,290.9

Schedule of Change in Asset Retirement Obligation [Table Text Block]

The cumulative decommissioning and retirement cost liabilities and expenses recorded in 2025 and 2024 for Entergy and the Registrant Subsidiaries were as follows:

			Entergy						Entergy Arkansas						Entergy Louisiana						Entergy Mississippi						Entergy New Orleans						Entergy Texas						System Energy
			(In Millions)
Liabilities as of December 31, 2023			$4,505.8						$1,560.1						$1,836.2						$8.2						$4.6						$11.7						$1,084.2
Liabilities incurred (a)			41.1						17.7						19.4						4.0						—						—						—
Accretion			233.8						93.6						94.4						1.1						0.3						0.8						43.5
Change in cash flow estimate			(67.3)						20.2						(107.1)						11.8						—						5.2						—
Liabilities as of December 31, 2024			4,713.4						1,691.6						1,842.9						25.1						4.9						17.7						1,127.7
Accretion			243.1						100.7						94.1						1.4						0.3						0.8						45.3
Change in cash flow estimate			(9.0)						(0.9)						(4.6)						—						—						(3.4)						—
Liabilities as of December 31, 2025			$4,947.5						$1,791.4						$1,932.4						$26.5						$5.2						$15.1						$1,173.0

(a)See “Other” below for additional discussion regarding the asset retirement obligations established at Entergy Arkansas, Entergy Louisiana, and Entergy Mississippi.

Entergy Arkansas [Member]

Schedule of Regulatory Assets [Table Text Block]

Entergy Arkansas

			2025						2024
			(In Millions)
Asset retirement obligation - recovery dependent upon timing of decommissioning of nuclear units or shutdown of non-nuclear power plants and solar facilities (Note 9) (a)			$750.5						$693.0
Removal costs (Note 9)			369.6						337.9
Pension & postretirement costs (Note 11 - Qualified Pension Plans, Other Postretirement Benefits, and Non-Qualified Pension Plans) (a)			333.4						391.2
Qualified pension settlement cost deferral - recovered through June 2047 (Note 11 - Qualified Pension Settlement Cost)			68.1						75.8
Production tax credits (Note 3 - Other Tax Matters - Inflation Reduction Act of 2022) (e)			37.1						—
Deferred COVID-19 costs - recovered over a 10-year period through December 2033			31.2						35.1
Storm damage costs - recovered through retail rates			29.3						29.8
Retired electric meters - recovered over a 15-year period through March 2034			29.2						32.8
Formula rate plan historical year rate adjustment (Note 2 - Retail Rate Proceedings) (c)			28.3						15.5
Non-service pension & postretirement costs (Note 11 - Accounting for Pension and Other Postretirement Benefits)			24.9						42.1
Unamortized loss on reacquired debt - recovered over term of debt			17.4						18.6
Retail rate deferrals - recovered through rate riders as rates are redetermined annually (c)			14.6						13.6
Other			10.2						14.7
Entergy Arkansas Total			$1,743.8						$1,700.1

Schedule of Change in Asset Retirement Obligation [Table Text Block]

The cumulative decommissioning and retirement cost liabilities and expenses recorded in 2025 and 2024 for Entergy and the Registrant Subsidiaries were as follows:

			Entergy						Entergy Arkansas						Entergy Louisiana						Entergy Mississippi						Entergy New Orleans						Entergy Texas						System Energy
			(In Millions)
Liabilities as of December 31, 2023			$4,505.8						$1,560.1						$1,836.2						$8.2						$4.6						$11.7						$1,084.2
Liabilities incurred (a)			41.1						17.7						19.4						4.0						—						—						—
Accretion			233.8						93.6						94.4						1.1						0.3						0.8						43.5
Change in cash flow estimate			(67.3)						20.2						(107.1)						11.8						—						5.2						—
Liabilities as of December 31, 2024			4,713.4						1,691.6						1,842.9						25.1						4.9						17.7						1,127.7
Accretion			243.1						100.7						94.1						1.4						0.3						0.8						45.3
Change in cash flow estimate			(9.0)						(0.9)						(4.6)						—						—						(3.4)						—
Liabilities as of December 31, 2025			$4,947.5						$1,791.4						$1,932.4						$26.5						$5.2						$15.1						$1,173.0

(a)See “Other” below for additional discussion regarding the asset retirement obligations established at Entergy Arkansas, Entergy Louisiana, and Entergy Mississippi.

Entergy Louisiana [Member]

Schedule of Regulatory Assets [Table Text Block]

Entergy Louisiana

			2025						2024
			(In Millions)
Asset retirement obligation - recovery dependent upon timing of decommissioning of nuclear units or shutdown of non-nuclear power plants (Note 9) (a)			$438.0						$421.5
Removal costs (Note 9)			348.5						323.2
Pension & postretirement costs (Note 11 - Qualified Pension Plans, Other Postretirement Benefits, and Non-Qualified Pension Plans) (a)			215.3						271.5
Storm damage costs, including hurricane costs - recovered through securitization and retail rates (Note 2 - Storm Cost Recovery Filings with Retail Regulators)			188.1						226.6
Qualified pension settlement cost deferral - recovered through June 2047 (Note 11 - Qualified Pension Settlement Cost)			98.7						111.4
Production tax credits (Note 3 - Other Tax Matters - Inflation Reduction Act of 2022) (e)			77.0						—
Retired electric and gas meters - recovered over a 22-year period through July 2041			72.9						78.5
Retired distribution plant - resiliency plan - recovered over a 33-year period			22.4						—
Non-service pension & postretirement costs (Note 11 - Accounting for Pension and Other Postretirement Benefits)			21.4						96.2
Unamortized loss on reacquired debt - recovered over term of debt			20.3						21.7
Deferred COVID-19 costs - offset with shorter-term financing interest earnings regulatory liability in 2025 (a)			—						47.8
Other			38.1						48.5
Entergy Louisiana Total (d)			$1,540.7						$1,646.9

Schedule of Change in Asset Retirement Obligation [Table Text Block]

The cumulative decommissioning and retirement cost liabilities and expenses recorded in 2025 and 2024 for Entergy and the Registrant Subsidiaries were as follows:

			Entergy						Entergy Arkansas						Entergy Louisiana						Entergy Mississippi						Entergy New Orleans						Entergy Texas						System Energy
			(In Millions)
Liabilities as of December 31, 2023			$4,505.8						$1,560.1						$1,836.2						$8.2						$4.6						$11.7						$1,084.2
Liabilities incurred (a)			41.1						17.7						19.4						4.0						—						—						—
Accretion			233.8						93.6						94.4						1.1						0.3						0.8						43.5
Change in cash flow estimate			(67.3)						20.2						(107.1)						11.8						—						5.2						—
Liabilities as of December 31, 2024			4,713.4						1,691.6						1,842.9						25.1						4.9						17.7						1,127.7
Accretion			243.1						100.7						94.1						1.4						0.3						0.8						45.3
Change in cash flow estimate			(9.0)						(0.9)						(4.6)						—						—						(3.4)						—
Liabilities as of December 31, 2025			$4,947.5						$1,791.4						$1,932.4						$26.5						$5.2						$15.1						$1,173.0

(a)See “Other” below for additional discussion regarding the asset retirement obligations established at Entergy Arkansas, Entergy Louisiana, and Entergy Mississippi.

Entergy Mississippi [Member]

Schedule of Regulatory Assets [Table Text Block]

Entergy Mississippi

			2025						2024
			(In Millions)
Removal costs (Note 9)			$198.6						$184.8
Retail rate deferrals - recovered through formula rates or rate riders as rates are redetermined annually			105.3						162.5
Pension & postretirement costs (Note 11 - Qualified Pension Plans, Other Postretirement Benefits, and Non-Qualified Pension Plans) (a)			70.3						82.2
Qualified pension settlement cost deferral - recovered through June 2047 (Note 11 - Qualified Pension Settlement Cost)			26.0						29.1
Non-service pension & postretirement costs (Note 11 - Accounting for Pension and Other Postretirement Benefits)			21.2						29.9
Asset retirement obligation - recovery dependent upon timing of shutdown of non-nuclear power plants and solar facility (Note 9) (a)			12.2						9.4
Unamortized loss on reacquired debt - recovered over term of debt			8.2						9.1
Other			13.9						18.8
Entergy Mississippi Total			$455.7						$525.8

Schedule of Change in Asset Retirement Obligation [Table Text Block]

The cumulative decommissioning and retirement cost liabilities and expenses recorded in 2025 and 2024 for Entergy and the Registrant Subsidiaries were as follows:

			Entergy						Entergy Arkansas						Entergy Louisiana						Entergy Mississippi						Entergy New Orleans						Entergy Texas						System Energy
			(In Millions)
Liabilities as of December 31, 2023			$4,505.8						$1,560.1						$1,836.2						$8.2						$4.6						$11.7						$1,084.2
Liabilities incurred (a)			41.1						17.7						19.4						4.0						—						—						—
Accretion			233.8						93.6						94.4						1.1						0.3						0.8						43.5
Change in cash flow estimate			(67.3)						20.2						(107.1)						11.8						—						5.2						—
Liabilities as of December 31, 2024			4,713.4						1,691.6						1,842.9						25.1						4.9						17.7						1,127.7
Accretion			243.1						100.7						94.1						1.4						0.3						0.8						45.3
Change in cash flow estimate			(9.0)						(0.9)						(4.6)						—						—						(3.4)						—
Liabilities as of December 31, 2025			$4,947.5						$1,791.4						$1,932.4						$26.5						$5.2						$15.1						$1,173.0

(a)See “Other” below for additional discussion regarding the asset retirement obligations established at Entergy Arkansas, Entergy Louisiana, and Entergy Mississippi.

Entergy New Orleans [Member]

Schedule of Regulatory Assets [Table Text Block]

Entergy New Orleans

			2025						2024
			(In Millions)
Removal costs (Note 9)			$56.8						$62.5
Pension & postretirement costs (Note 11 - Qualified Pension Plans, Other Postretirement Benefits, and Non-Qualified Pension Plans) (a)			18.2						22.9
Retired electric and gas meters - recovered over a 12-year period through July 2031 (c)			10.0						13.5
Qualified pension settlement cost deferral - recovered through June 2047 (Note 11 - Qualified Pension Settlement Cost)			7.4						10.8
Deferred COVID-19 costs - recovered over a five-year period through August 2028 (c)			5.8						10.2
Unamortized loss on reacquired debt - recovered over term of debt			0.3						0.5
Storm damage costs, including hurricane costs - recovered through securitization and retail rates (Note 2 - Storm Cost Recovery Filings with Retail Regulators and Note 5 - Securitization Bonds)			0.2						4.0
Gas cross-boring costs - recovered through formula rates as rates are redetermined by retail regulators			—						11.9
Other			11.0						20.7
Entergy New Orleans Total (d)			$109.7						$157.0

Schedule of Change in Asset Retirement Obligation [Table Text Block]

The cumulative decommissioning and retirement cost liabilities and expenses recorded in 2025 and 2024 for Entergy and the Registrant Subsidiaries were as follows:

			Entergy						Entergy Arkansas						Entergy Louisiana						Entergy Mississippi						Entergy New Orleans						Entergy Texas						System Energy
			(In Millions)
Liabilities as of December 31, 2023			$4,505.8						$1,560.1						$1,836.2						$8.2						$4.6						$11.7						$1,084.2
Liabilities incurred (a)			41.1						17.7						19.4						4.0						—						—						—
Accretion			233.8						93.6						94.4						1.1						0.3						0.8						43.5
Change in cash flow estimate			(67.3)						20.2						(107.1)						11.8						—						5.2						—
Liabilities as of December 31, 2024			4,713.4						1,691.6						1,842.9						25.1						4.9						17.7						1,127.7
Accretion			243.1						100.7						94.1						1.4						0.3						0.8						45.3
Change in cash flow estimate			(9.0)						(0.9)						(4.6)						—						—						(3.4)						—
Liabilities as of December 31, 2025			$4,947.5						$1,791.4						$1,932.4						$26.5						$5.2						$15.1						$1,173.0

(a)See “Other” below for additional discussion regarding the asset retirement obligations established at Entergy Arkansas, Entergy Louisiana, and Entergy Mississippi.

Entergy Texas [Member]

Schedule of Regulatory Assets [Table Text Block]

Entergy Texas

			2025						2024
			(In Millions)
Storm damage costs, including hurricane costs - recovered through securitization and retail rates (Note 5 - Securitization Bonds)			$263.8						$286.5
Removal costs (Note 9)			105.0						102.3
Advanced metering system surcharge for residential customers - recovered through December 2029			53.7						39.7
Pension & postretirement costs (Note 11 - Qualified Pension Plans, Other Postretirement Benefits, and Non-Qualified Pension Plans) (a)			43.0						57.1
Unamortized loss on reacquired debt - recovered over term of debt			7.0						7.6
Neches and Sabine costs - recovered over a 10-year period through October 2028			6.7						9.2
Retired electric meters - recovered through retail rates (Note 2 - Retail Rate Proceedings)			5.8						10.9
Pension & postretirement benefits expense deferral - recovered through retail rates (Note 2 - Retail Rate Proceedings and Note 11 - Entergy Texas Reserve)			0.9						15.0
Non-service pension & postretirement costs (Note 11 - Accounting for Pension and Other Postretirement Benefits)			—						5.8
Other			24.9						15.6
Entergy Texas Total			$510.8						$549.7

Schedule of Change in Asset Retirement Obligation [Table Text Block]

The cumulative decommissioning and retirement cost liabilities and expenses recorded in 2025 and 2024 for Entergy and the Registrant Subsidiaries were as follows:

			Entergy						Entergy Arkansas						Entergy Louisiana						Entergy Mississippi						Entergy New Orleans						Entergy Texas						System Energy
			(In Millions)
Liabilities as of December 31, 2023			$4,505.8						$1,560.1						$1,836.2						$8.2						$4.6						$11.7						$1,084.2
Liabilities incurred (a)			41.1						17.7						19.4						4.0						—						—						—
Accretion			233.8						93.6						94.4						1.1						0.3						0.8						43.5
Change in cash flow estimate			(67.3)						20.2						(107.1)						11.8						—						5.2						—
Liabilities as of December 31, 2024			4,713.4						1,691.6						1,842.9						25.1						4.9						17.7						1,127.7
Accretion			243.1						100.7						94.1						1.4						0.3						0.8						45.3
Change in cash flow estimate			(9.0)						(0.9)						(4.6)						—						—						(3.4)						—
Liabilities as of December 31, 2025			$4,947.5						$1,791.4						$1,932.4						$26.5						$5.2						$15.1						$1,173.0

(a)See “Other” below for additional discussion regarding the asset retirement obligations established at Entergy Arkansas, Entergy Louisiana, and Entergy Mississippi.

System Energy [Member]

Schedule of Regulatory Assets [Table Text Block]

System Energy

			2025						2024
			(In Millions)
Asset retirement obligation - recovery dependent upon timing of decommissioning of nuclear unit (Note 9) (c)			$222.4						$224.8
Production tax credits (Note 3 - Other Tax Matters - Inflation Reduction Act of 2022) (e)			185.7						—
Removal costs - recovered through depreciation rates (Note 9)			100.4						96.9
Pension & postretirement costs (Note 11 - Qualified Pension Plans, Other Postretirement Benefits, and Non-Qualified Pension Plans) (a)			87.2						96.5
Non-service pension & postretirement costs (Note 11 - Accounting for Pension and Other Postretirement Benefits)			5.1						7.9
Unamortized loss on reacquired debt - recovered over term of debt			0.4						0.4
System Energy Total			$601.2						$426.5

Schedule of Change in Asset Retirement Obligation [Table Text Block]

The cumulative decommissioning and retirement cost liabilities and expenses recorded in 2025 and 2024 for Entergy and the Registrant Subsidiaries were as follows:

			Entergy						Entergy Arkansas						Entergy Louisiana						Entergy Mississippi						Entergy New Orleans						Entergy Texas						System Energy
			(In Millions)
Liabilities as of December 31, 2023			$4,505.8						$1,560.1						$1,836.2						$8.2						$4.6						$11.7						$1,084.2
Liabilities incurred (a)			41.1						17.7						19.4						4.0						—						—						—
Accretion			233.8						93.6						94.4						1.1						0.3						0.8						43.5
Change in cash flow estimate			(67.3)						20.2						(107.1)						11.8						—						5.2						—
Liabilities as of December 31, 2024			4,713.4						1,691.6						1,842.9						25.1						4.9						17.7						1,127.7
Accretion			243.1						100.7						94.1						1.4						0.3						0.8						45.3
Change in cash flow estimate			(9.0)						(0.9)						(4.6)						—						—						(3.4)						—
Liabilities as of December 31, 2025			$4,947.5						$1,791.4						$1,932.4						$26.5						$5.2						$15.1						$1,173.0

(a)See “Other” below for additional discussion regarding the asset retirement obligations established at Entergy Arkansas, Entergy Louisiana, and Entergy Mississippi.

Removal Costs [Member] | Entergy Arkansas [Member]

Schedule of Regulatory Assets [Table Text Block]

In accordance with regulatory accounting principles, the Registrant Subsidiaries have recorded regulatory assets in the following amounts to reflect their estimates of the difference between estimated incurred removal costs and estimated removal costs expected to be recovered in rates:

			December 31,
			2025						2024
			(In Millions)
Entergy Arkansas			$369.6						$337.9
Entergy Louisiana			$348.5						$323.2
Entergy Mississippi			$198.6						$184.8
Entergy New Orleans			$56.8						$62.5
Entergy Texas			$105.0						$102.3
System Energy			$100.4						$96.9

Removal Costs [Member] | Entergy Louisiana [Member]

Schedule of Regulatory Assets [Table Text Block]

In accordance with regulatory accounting principles, the Registrant Subsidiaries have recorded regulatory assets in the following amounts to reflect their estimates of the difference between estimated incurred removal costs and estimated removal costs expected to be recovered in rates:

			December 31,
			2025						2024
			(In Millions)
Entergy Arkansas			$369.6						$337.9
Entergy Louisiana			$348.5						$323.2
Entergy Mississippi			$198.6						$184.8
Entergy New Orleans			$56.8						$62.5
Entergy Texas			$105.0						$102.3
System Energy			$100.4						$96.9

Removal Costs [Member] | Entergy Mississippi [Member]

Schedule of Regulatory Assets [Table Text Block]

In accordance with regulatory accounting principles, the Registrant Subsidiaries have recorded regulatory assets in the following amounts to reflect their estimates of the difference between estimated incurred removal costs and estimated removal costs expected to be recovered in rates:

			December 31,
			2025						2024
			(In Millions)
Entergy Arkansas			$369.6						$337.9
Entergy Louisiana			$348.5						$323.2
Entergy Mississippi			$198.6						$184.8
Entergy New Orleans			$56.8						$62.5
Entergy Texas			$105.0						$102.3
System Energy			$100.4						$96.9

Removal Costs [Member] | Entergy New Orleans [Member]

Schedule of Regulatory Assets [Table Text Block]

In accordance with regulatory accounting principles, the Registrant Subsidiaries have recorded regulatory assets in the following amounts to reflect their estimates of the difference between estimated incurred removal costs and estimated removal costs expected to be recovered in rates:

			December 31,
			2025						2024
			(In Millions)
Entergy Arkansas			$369.6						$337.9
Entergy Louisiana			$348.5						$323.2
Entergy Mississippi			$198.6						$184.8
Entergy New Orleans			$56.8						$62.5
Entergy Texas			$105.0						$102.3
System Energy			$100.4						$96.9

Removal Costs [Member] | Entergy Texas [Member]

Schedule of Regulatory Assets [Table Text Block]

In accordance with regulatory accounting principles, the Registrant Subsidiaries have recorded regulatory assets in the following amounts to reflect their estimates of the difference between estimated incurred removal costs and estimated removal costs expected to be recovered in rates:

			December 31,
			2025						2024
			(In Millions)
Entergy Arkansas			$369.6						$337.9
Entergy Louisiana			$348.5						$323.2
Entergy Mississippi			$198.6						$184.8
Entergy New Orleans			$56.8						$62.5
Entergy Texas			$105.0						$102.3
System Energy			$100.4						$96.9

Removal Costs [Member] | System Energy [Member]

Schedule of Regulatory Assets [Table Text Block]

In accordance with regulatory accounting principles, the Registrant Subsidiaries have recorded regulatory assets in the following amounts to reflect their estimates of the difference between estimated incurred removal costs and estimated removal costs expected to be recovered in rates:

			December 31,
			2025						2024
			(In Millions)
Entergy Arkansas			$369.6						$337.9
Entergy Louisiana			$348.5						$323.2
Entergy Mississippi			$198.6						$184.8
Entergy New Orleans			$56.8						$62.5
Entergy Texas			$105.0						$102.3
System Energy			$100.4						$96.9

X

- Definition

Tabular disclosure of the changes in carrying amount of a liability for asset retirement obligations, for changes such as new obligations, changes in estimates of existing obligations, spending on existing obligations, property dispositions, and foreign currency translation.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 410
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481850/410-20-50-1

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	dtr-types:textBlockItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Tabular disclosure of assets that are created when regulatory agencies permit public utilities to defer certain costs included in rate-setting to the balance sheet.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 980
-SubTopic 340
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478742/980-340-50-1

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 980
-SubTopic 715
-Section 50
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-Publisher FASB
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-Name Accounting Standards Codification
-Topic 980
-SubTopic 340
-Section 50
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-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478742/980-340-50-2

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