Rate And Regulatory Matters (Tables)

12 Months Ended

Dec. 31, 2020

Details Of Other Regulatory Assets

Entergy

	2020	2019
	(In Millions)
Pension & postretirement costs (Note 11 - Qualified Pension Plans, Other Postretirement Benefits, and Non-Qualified Pension Plans) (a)	$3,027.5	$2,942.4
Asset retirement obligation - recovery dependent upon timing of decommissioning of nuclear units or dismantlement of non-nuclear power plants (Note 9) (a)	1,018.9	920.4
Removal costs (Note 9)	893.8	421.0
Storm damage costs, including hurricane costs - recovered through securitization and retail rates (Note 2 - Hurricane Laura, Hurricane Delta, and Hurricane Zeta and Storm Cost Recovery Filings with Retail Regulators and Note 5 - Securitization Bonds)	379.2	372.8
Retired electric and gas meters - recovered through retail rates as determined by retail regulators	192.1	205.6
Opportunity Sales - recovery will be determined after final order in proceeding (Note 2 - Entergy Arkansas Opportunity Sales Proceeding) (b)	131.8	116.3
Deferred COVID-19 costs recovery period to be determined (Note 2 - Retail Rate Proceedings) (b)	105.7	—
Unamortized loss on reacquired debt - recovered over term of debt	79.2	66.6
Retail rate deferrals - recovered through rate riders as rates are redetermined by retail regulators	66.0	15.7
Attorney General litigation costs - recovered over a six-year period through March 2026 (b)	25.3	29.5
New nuclear generation development costs - recovery through formula rate plan December 2014 through November 2022 (b)	14.2	21.6
Little Gypsy costs – recovered through securitization (Note 5 - Entergy Louisiana Securitization Bonds - Little Gypsy)	7.5	29.9
Other	135.3	150.3
Entergy Total	$6,076.5	$5,292.1

Schedule of Regulatory Liabilities

Entergy

	2020	2019
	(In Millions)
Unrealized gains on nuclear decommissioning trust funds (Note 16) (a)	$1,694.1	$1,300.1
Louisiana Act 55 financing savings obligation (Note 3) (b)	144.3	97.1
Vidalia purchased power agreement (Note 8) (b)	115.7	127.3
Retail rate rider over-recovery - refunded through rate riders as rates are redetermined annually	75.1	62.3
Grand Gulf sale-leaseback - (Note 5 - Grand Gulf Sale-Leaseback Transactions)	55.6	55.6
Entergy Arkansas’s accumulated accelerated Grand Gulf amortization - will be returned to customers when approved by the APSC and the FERC	44.4	44.4
Future formula rate plan revenue reductions (Note 2 - Retail Rate Proceedings)	43.5	51.1
Asset retirement obligation - return to customers dependent upon timing of decommissioning (Note 9) (a)	29.7	37.2
Internal restructuring guaranteed tax credits (Note 2 - Internal Restructuring)	26.4	33.0
Business combination guaranteed customer benefits - returned to customers through retail rates and fuel rates December 2015 through November 2024	21.5	35.7
Advanced metering system (AMS) surcharge - return to customers dependent upon AMS spend	20.1	25.3
Excess decommissioning recovery for Willow Glen - (Note 14 - Dispositions)	—	21.2
Entergy Mississippi’s accumulated accelerated Grand Gulf amortization - amortized and credited through the Unit Power Sales Agreement	10.7	17.8
Income tax rate change - returned to electric and gas customers through retail rates (Note 2 - Retail Rate Proceedings)	7.3	13.9
Other	35.5	39.0
Entergy Total	$2,323.9	$1,961.0

Entergy Louisiana [Member]

Details Of Other Regulatory Assets

Entergy Louisiana

	2020	2019
	(In Millions)
Pension & postretirement costs (Note 11 - Qualified Pension Plans and Non-Qualified Pension Plans) (a)	$799.4	$787.7
Removal costs (Note 9)	302.5	—
Asset Retirement Obligation - recovery dependent upon timing of decommissioning of nuclear units or dismantlement of non-nuclear power plants (Note 9) (a)	299.0	262.5
Retired electric meters - recovered over a 22-year period through July 2041	96.4	101.1
Storm damage costs - recovered through retail rates (Note 2 - Hurricane Laura, Hurricane Delta, and Hurricane Zeta and Storm Cost Recovery Filings with Retail Regulators)	94.0	45.7
Deferred COVID-19 costs - recovery period to be determined (Note 2 - Retail Rate Proceedings) (b)	48.8	—
Unamortized loss on reacquired debt - recovered over term of debt	26.6	20.4
New nuclear generation development costs - recovery through formula rate plan December 2014 through November 2022 (b)	14.0	21.2
Business combination external costs deferral - recovery through formula rate plan December 2015 through November 2025 (b)	9.2	10.8
River Bend AFUDC - recovered through August 2025 (Note 1 - River Bend AFUDC)	7.2	9.1
Little Gypsy costs – recovered through securitization (Note 5 - Entergy Louisiana Securitization Bonds - Little Gypsy)	5.1	27.6
Other	23.9	29.1
Entergy Louisiana Total	$1,726.1	$1,315.2

Schedule of Regulatory Liabilities

Entergy Louisiana

	2020	2019
	(In Millions)
Unrealized gains on nuclear decommissioning trust funds (Note 16) (a)	$567.7	$436.5
Louisiana Act 55 financing savings obligation (Note 3)	144.3	97.1
Vidalia purchased power agreement (Note 8) (b)	115.7	127.3
Asset Retirement Obligation - return to customers dependent upon timing of decommissioning (Note 9) (a)	29.7	37.1
Business combination guaranteed customer benefits - returned to customers through retail rates and fuel rates December 2015 through November 2024	21.5	35.7
Excess decommissioning recovery for Willow Glen - returned over one-year period through retail rates (Note 14 - Dispositions)	—	21.2
Other	39.4	39.2
Entergy Louisiana Total	$918.3	$794.1

The Amount Of Deferred Fuel Costs, That Entergy Expects To Recover (Or Return To Customers) Through Fuel Mechanisms, Subject To Subsequent Regulatory Review

The table below shows the amount of deferred fuel costs as of December 31, 2020 and 2019 that Entergy expects to recover (or return to customers) through fuel mechanisms, subject to subsequent regulatory review.

	2020	2019
	(In Millions)
Entergy Arkansas (a)	$15.2	$14.0
Entergy Louisiana (b)	$170.4	$112.5
Entergy Mississippi	($14.7)	($70.4)
Entergy New Orleans (b)	$6.2	($0.8)
Entergy Texas	($85.4)	($13.0)

(a)Includes $68.2 million in 2020 and $67.7 million in 2019 of fuel and purchased power costs whose recovery periods are indeterminate but are expected to be recovered over a period greater than twelve months.

(b)Includes $168.1 million in both years for Entergy Louisiana and $4.1 million in both years for Entergy New Orleans of fuel, purchased power, and capacity costs, which do not currently earn a return on investment and whose recovery periods are indeterminate but are expected to be recovered over a period greater than twelve months.

Opportunity Sales Proceeding [Table Text Block]

Refunds and interest in the following amounts were paid by Entergy Arkansas to the other operating companies in December 2018:

	Total refunds including interest
	Payment/(Receipt)
	(In Millions)
	Principal	Interest	Total
Entergy Arkansas	$68	$67	$135
Entergy Louisiana	($30)	($29)	($59)
Entergy Mississippi	($18)	($18)	($36)
Entergy New Orleans	($3)	($4)	($7)
Entergy Texas	($17)	($16)	($33)

Entergy New Orleans [Member]

Details Of Other Regulatory Assets

Entergy New Orleans

	2020	2019
	(In Millions)
Pension & postretirement costs (Note 11 - Qualified Pension Plans, Other Postretirement Benefits, and Non-Qualified Pension Plans) (a)	$75.7	$85.9
Removal costs - (Note 9)	63.2	52.9
Storm damage costs, including hurricane costs - recovered through securitization and retail rates (Note 2 - Hurricane Laura, Hurricane Delta, and Hurricane Zeta and Note 5 - Entergy New Orleans Securitization Bonds - Hurricane Isaac)	55.2	59.6
Retired meters - recovered over a 12-year period through July 2031 (b)	21.7	24.6
Deferred COVID-19 costs recovery period to be determined (Note 2 - Retail Rate Proceedings) (b)	14.3	—
Rate case costs - recovered over a three-year period through July 2022 (Note 2 - Retail Rate Proceedings)	5.7	7.0
Asset retirement obligation - recovery dependent upon timing of dismantlement of non-nuclear power plants (Note 9) (a)	5.2	4.9
New Orleans Power Station deferral – recovered over a five-year period through October 2025 (Note 2 - Retail Rate Proceedings)	5.0	—
Algiers customer migration costs - recovered over a five-year period through July 2024 (Note 2 - Retail Rate Proceedings)	3.9	4.9
Unamortized loss on reacquired debt - recovered over term of debt	1.9	2.3
Other	15.0	17.3
Entergy New Orleans Total	$266.8	$259.4

The Amount Of Deferred Fuel Costs, That Entergy Expects To Recover (Or Return To Customers) Through Fuel Mechanisms, Subject To Subsequent Regulatory Review

The table below shows the amount of deferred fuel costs as of December 31, 2020 and 2019 that Entergy expects to recover (or return to customers) through fuel mechanisms, subject to subsequent regulatory review.

	2020	2019
	(In Millions)
Entergy Arkansas (a)	$15.2	$14.0
Entergy Louisiana (b)	$170.4	$112.5
Entergy Mississippi	($14.7)	($70.4)
Entergy New Orleans (b)	$6.2	($0.8)
Entergy Texas	($85.4)	($13.0)

(a)Includes $68.2 million in 2020 and $67.7 million in 2019 of fuel and purchased power costs whose recovery periods are indeterminate but are expected to be recovered over a period greater than twelve months.

(b)Includes $168.1 million in both years for Entergy Louisiana and $4.1 million in both years for Entergy New Orleans of fuel, purchased power, and capacity costs, which do not currently earn a return on investment and whose recovery periods are indeterminate but are expected to be recovered over a period greater than twelve months.

Opportunity Sales Proceeding [Table Text Block]

Refunds and interest in the following amounts were paid by Entergy Arkansas to the other operating companies in December 2018:

	Total refunds including interest
	Payment/(Receipt)
	(In Millions)
	Principal	Interest	Total
Entergy Arkansas	$68	$67	$135
Entergy Louisiana	($30)	($29)	($59)
Entergy Mississippi	($18)	($18)	($36)
Entergy New Orleans	($3)	($4)	($7)
Entergy Texas	($17)	($16)	($33)

Entergy Texas [Member]

Details Of Other Regulatory Assets

Entergy Texas

	2020	2019
	(In Millions)
Storm damage costs, including hurricane costs - recovered through securitization and retail rates (Note 2 - Hurricane Laura, Hurricane Delta, and Hurricane Zeta and Note 5 - Entergy Texas Securitization Bonds)	$187.3	$221.4
Pension & postretirement costs (Note 11 - Qualified Pension Plans, Other Postretirement Benefits, and Non-Qualified Pension Plans) (a)	140.1	167.7
Removal costs (Note 9)	115.3	42.5
Retired electric meters - recovered over 13-year period through February 2032	26.0	28.4
Neches and Sabine costs - recovered over a 10-year period through September 2028 (Note 2 - Retail Rate Proceedings)	18.8	21.2
Deferred COVID-19 costs recovery period to be determined (Note 2 - Retail Rate Proceedings) (b)	12.9	—
Unamortized loss on reacquired debt - recovered over term of debt	10.5	7.7
Transition to competition costs - recovered over a 15-year period through February 2021	2.1	14.9
Other	11.7	8.8
Entergy Texas Total	$524.7	$512.6

Schedule of Regulatory Liabilities

Entergy Texas

	2020	2019
	(In Millions)
Advanced metering system (AMS) surcharge - returned to customers dependent upon AMS spend	$20.1	$25.3
Income tax rate change - refunded through a rate rider (Note 2 - Retail Rate Proceedings)	6.5	10.4
Transition to competition costs - returned to customers through rate riders when rates are redetermined periodically	3.2	3.8
Other	2.5	2.6
Entergy Texas Total	$32.3	$42.1

The Amount Of Deferred Fuel Costs, That Entergy Expects To Recover (Or Return To Customers) Through Fuel Mechanisms, Subject To Subsequent Regulatory Review

The table below shows the amount of deferred fuel costs as of December 31, 2020 and 2019 that Entergy expects to recover (or return to customers) through fuel mechanisms, subject to subsequent regulatory review.

	2020	2019
	(In Millions)
Entergy Arkansas (a)	$15.2	$14.0
Entergy Louisiana (b)	$170.4	$112.5
Entergy Mississippi	($14.7)	($70.4)
Entergy New Orleans (b)	$6.2	($0.8)
Entergy Texas	($85.4)	($13.0)

(a)Includes $68.2 million in 2020 and $67.7 million in 2019 of fuel and purchased power costs whose recovery periods are indeterminate but are expected to be recovered over a period greater than twelve months.

(b)Includes $168.1 million in both years for Entergy Louisiana and $4.1 million in both years for Entergy New Orleans of fuel, purchased power, and capacity costs, which do not currently earn a return on investment and whose recovery periods are indeterminate but are expected to be recovered over a period greater than twelve months.

Opportunity Sales Proceeding [Table Text Block]

Refunds and interest in the following amounts were paid by Entergy Arkansas to the other operating companies in December 2018:

	Total refunds including interest
	Payment/(Receipt)
	(In Millions)
	Principal	Interest	Total
Entergy Arkansas	$68	$67	$135
Entergy Louisiana	($30)	($29)	($59)
Entergy Mississippi	($18)	($18)	($36)
Entergy New Orleans	($3)	($4)	($7)
Entergy Texas	($17)	($16)	($33)

System Energy [Member]

Details Of Other Regulatory Assets

System Energy

	2020		2019
	(In Millions)
Asset retirement obligation - recovery dependent upon timing of decommissioning (Note 9) (a)	$226.3		$210.9
Pension & postretirement costs (Note 11 - Qualified Pension Plans and Other Postretirement Benefits) (a)	217.8		200.3
Removal costs - recovered through depreciation rates (Note 9)	92.9		75.9
Unamortized loss on reacquired debt - recovered over term of debt	2.0		3.0
System Energy Total	$	539.0	$	490.1

Schedule of Regulatory Liabilities

System Energy

	2020	2019
	(In Millions)
Unrealized gains on nuclear decommissioning trust funds (Note 16) (a)	$529.0	$403.3
Grand Gulf sale-leaseback - (Note 5 - Grand Gulf Sale-Leaseback Transactions)	55.6	55.6
Entergy Arkansas’s accumulated accelerated Grand Gulf amortization - will be returned to customers when approved by the APSC and the FERC	44.4	44.4
Grand Gulf sale-leaseback accumulated deferred income taxes (a)	25.7	12.3
Entergy Mississippi’s accumulated accelerated Grand Gulf amortization - amortized and credited through the Unit Power Sales Agreement	10.7	17.8
System Energy Total	$665.4	$533.4

Entergy Mississippi [Member]

Details Of Other Regulatory Assets

Entergy Mississippi

	2020	2019
	(In Millions)
Pension & postretirement costs (Note 11 - Qualified Pension Plans, Other Postretirement Benefits, and Non-Qualified Pension Plans) (a)	$242.7	$234.4
Removal costs (Note 9)	107.3	80.8
Retail rate deferrals - returned through rate riders as rates are redetermined annually	44.3	7.5
Attorney General litigation costs - recovered over a six-year period through March 2026 (b)	25.3	29.5
Deferred COVID-19 costs - recovery period to be determined (Note 2 - Retail Rate Proceedings) (b)	19.2	—
Unamortized loss on reacquired debt - recovered over term of debt	13.5	14.9
Asset retirement obligation - recovery dependent upon timing of dismantlement of non-nuclear power plants (Note 9) (a)	7.9	7.8
Other	7.1	3.1
Entergy Mississippi Total	$467.3	$378.0

Schedule of Regulatory Liabilities

Entergy Mississippi

	2020	2019
	(In Millions)
Retail rate rider over-recovery - refunded through rate riders as rates are redetermined annually	$14.2	$14.6
Grand Gulf Over-Recovery - returned to customers through rate riders as rates are redetermined annually	1.0	2.4
Future formula rate plan revenue reductions (Note 2 - Retail Rate Proceedings)	—	4.5
Other	0.6	—
Entergy Mississippi Total	$15.8	$21.5

The Amount Of Deferred Fuel Costs, That Entergy Expects To Recover (Or Return To Customers) Through Fuel Mechanisms, Subject To Subsequent Regulatory Review

The table below shows the amount of deferred fuel costs as of December 31, 2020 and 2019 that Entergy expects to recover (or return to customers) through fuel mechanisms, subject to subsequent regulatory review.

	2020	2019
	(In Millions)
Entergy Arkansas (a)	$15.2	$14.0
Entergy Louisiana (b)	$170.4	$112.5
Entergy Mississippi	($14.7)	($70.4)
Entergy New Orleans (b)	$6.2	($0.8)
Entergy Texas	($85.4)	($13.0)

(a)Includes $68.2 million in 2020 and $67.7 million in 2019 of fuel and purchased power costs whose recovery periods are indeterminate but are expected to be recovered over a period greater than twelve months.

(b)Includes $168.1 million in both years for Entergy Louisiana and $4.1 million in both years for Entergy New Orleans of fuel, purchased power, and capacity costs, which do not currently earn a return on investment and whose recovery periods are indeterminate but are expected to be recovered over a period greater than twelve months.

Opportunity Sales Proceeding [Table Text Block]

Refunds and interest in the following amounts were paid by Entergy Arkansas to the other operating companies in December 2018:

	Total refunds including interest
	Payment/(Receipt)
	(In Millions)
	Principal	Interest	Total
Entergy Arkansas	$68	$67	$135
Entergy Louisiana	($30)	($29)	($59)
Entergy Mississippi	($18)	($18)	($36)
Entergy New Orleans	($3)	($4)	($7)
Entergy Texas	($17)	($16)	($33)

Entergy Arkansas [Member]

Details Of Other Regulatory Assets

Entergy Arkansas

	2020	2019
	(In Millions)
Pension & postretirement costs (Note 11 - Qualified Pension Plans, Other Postretirement Benefits, and Non-Qualified Pension Plans) (a)	$831.5	$796.5
Asset retirement obligation - recovery dependent upon timing of decommissioning of nuclear units or dismantlement of non-nuclear power plants (Note 9) (a)	479.3	433.0
Removal costs (Note 9)	212.6	168.9
Opportunity sales - recovery will be determined after final order in proceeding (Note 2 - Entergy Arkansas Opportunity Sales Proceeding) (b)	131.8	116.3
Retired electric meters - recovered over 15-year period through March 2034	46.9	50.4
Storm damage costs - recovered either through securitization or retail rates (Note 5 - Entergy Arkansas Securitization Bonds)	42.7	46.1
Unamortized loss on reacquired debt - recovered over term of debt	24.7	18.3
Retail rate deferrals - recovered through rate riders as rates are redetermined annually (b)	12.6	2.3
Deferred COVID-19 costs - recovery period to be determined (Note 2 - Retail Rate Proceedings) (b)	10.5	—
ANO Fukushima and Flood Barrier costs - recovered through retail rates through February 2026 (Note 2 - Retail Rate Proceedings) (b)	9.1	10.9
Other	30.7	24.2
Entergy Arkansas Total	$1,832.4	$1,666.9

Schedule of Regulatory Liabilities

Entergy Arkansas

	2020	2019
	(In Millions)
Unrealized gains on nuclear decommissioning trust funds (Note 16) (a)	$597.4	$460.3
Future formula rate plan revenue reductions (Note 2 - Retail Rate Proceedings)	43.5	46.6
Internal restructuring guaranteed customer credits (Note 2 - Retail Rate Proceedings)	26.4	33.0
Retail rate rider over-recovery - refunded through rate riders as rates are redetermined annually	19.6	19.7
Entergy Arkansas Total	$686.9	$559.6

The Amount Of Deferred Fuel Costs, That Entergy Expects To Recover (Or Return To Customers) Through Fuel Mechanisms, Subject To Subsequent Regulatory Review

The table below shows the amount of deferred fuel costs as of December 31, 2020 and 2019 that Entergy expects to recover (or return to customers) through fuel mechanisms, subject to subsequent regulatory review.

	2020	2019
	(In Millions)
Entergy Arkansas (a)	$15.2	$14.0
Entergy Louisiana (b)	$170.4	$112.5
Entergy Mississippi	($14.7)	($70.4)
Entergy New Orleans (b)	$6.2	($0.8)
Entergy Texas	($85.4)	($13.0)

(a)Includes $68.2 million in 2020 and $67.7 million in 2019 of fuel and purchased power costs whose recovery periods are indeterminate but are expected to be recovered over a period greater than twelve months.

(b)Includes $168.1 million in both years for Entergy Louisiana and $4.1 million in both years for Entergy New Orleans of fuel, purchased power, and capacity costs, which do not currently earn a return on investment and whose recovery periods are indeterminate but are expected to be recovered over a period greater than twelve months.

Opportunity Sales Proceeding [Table Text Block]

Refunds and interest in the following amounts were paid by Entergy Arkansas to the other operating companies in December 2018:

	Total refunds including interest
	Payment/(Receipt)
	(In Millions)
	Principal	Interest	Total
Entergy Arkansas	$68	$67	$135
Entergy Louisiana	($30)	($29)	($59)
Entergy Mississippi	($18)	($18)	($36)
Entergy New Orleans	($3)	($4)	($7)
Entergy Texas	($17)	($16)	($33)