Decommissioning Trust Funds (Tables)

12 Months Ended

Dec. 31, 2020

Securities Held

The available-for-sale securities held as of December 31, 2020 and 2019 are summarized as follows:

	Fair Value	Total Unrealized Gains	Total Unrealized Losses
	(In Millions)
2020
Debt Securities (a)	$2,617	$197	$3
2019
Debt Securities (a)	$2,456	$96	$6

(a)    Debt securities presented herein do not include the $507 million of debt securities held in the wholly-owned registered investment company as of December 31, 2019, which are not accounted for as available-for-sale.

Available For Sale Securities Continuous Unrealized Loss Position Fair Value

The fair value and gross unrealized losses of available-for-sale debt securities, summarized by length of time that the securities have been in a continuous loss position, are as follows as of December 31, 2020:

	Fair Value	Gross Unrealized Losses
	(In Millions)
Less than 12 months	$187	$3
More than 12 months	2	—
Total	$189	$3

The fair value and gross unrealized losses of available-for-sale debt securities, summarized by length of time that the securities have been in a continuous loss position, are as follows as of December 31, 2019:

	Fair Value	Gross Unrealized Losses
	(In Millions)
Less than 12 months	$404	$5
More than 12 months	38	1
Total	$442	$6

Fair Value Of Debt Securities By Contractual Maturities

The fair value of available-for-sale debt securities, summarized by contractual maturities, as of December 31, 2020 and 2019 are as follows:

	2020	2019
	(In Millions)
Less than 1 year	($4)	$128
1 year - 5 years	672	807
5 years - 10 years	852	666
10 years - 15 years	377	125
15 years - 20 years	144	126
20 years+	576	604
Total	$2,617	$2,456

Entergy Arkansas [Member]

Securities Held

The available-for-sale securities held as of December 31, 2020 and 2019 are summarized as follows:

	Fair Value	Total Unrealized Gains	Total Unrealized Losses
	(In Millions)
2020
Debt Securities	$447.9	$27.7	$0.3
2019
Debt Securities	$412.8	$9.9	$2.6

Available For Sale Securities Continuous Unrealized Loss Position Fair Value

The fair value and gross unrealized losses of available-for-sale debt securities, summarized by length of time that the securities have been in a continuous loss position, are as follows as of December 31, 2020:

	Fair Value	Gross Unrealized Losses
	(In Millions)
Less than 12 months	$29.9	$0.3
More than 12 months	—	—
Total	$29.9	$0.3

The fair value and gross unrealized losses of available-for-sale debt securities, summarized by length of time that the securities have been in a continuous loss position, are as follows as of December 31, 2019:

	Fair Value	Gross Unrealized Losses
	(In Millions)
Less than 12 months	$104.8	$2.5
More than 12 months	7.7	0.1
Total	$112.5	$2.6

Fair Value Of Debt Securities By Contractual Maturities

The fair value of available-for-sale debt securities, summarized by contractual maturities, as of December 31, 2020 and 2019 are as follows:

	2020	2019
	(In Millions)
Less than 1 year	$—	$44.1
1 year - 5 years	113.1	109.1
5 years - 10 years	189.8	156.0
10 years - 15 years	81.4	31.3
15 years - 20 years	28.5	23.8
20 years+	35.1	48.5
Total	$447.9	$412.8

Entergy Louisiana [Member]

Securities Held

The available-for-sale securities held as of December 31, 2020 and 2019 are summarized as follows:

	Fair Value	Total Unrealized Gains	Total Unrealized Losses
	(In Millions)
2020
Debt Securities	$632.2	$51.3	$0.5
2019
Debt Securities	$601.5	$29.3	$0.8

Available For Sale Securities Continuous Unrealized Loss Position Fair Value

The fair value and gross unrealized losses of available-for-sale debt securities, summarized by length of time that the securities have been in a continuous loss position, are as follows as of December 31, 2020:

	Fair Value	Gross Unrealized Losses
	(In Millions)
Less than 12 months	$36.4	$0.5
More than 12 months	0.8	—
Total	$37.2	$0.5

The fair value and gross unrealized losses of available-for-sale debt securities, summarized by length of time that the securities have been in a continuous loss position, are as follows as of December 31, 2019:

	Fair Value	Gross Unrealized Losses
	(In Millions)
Less than 12 months	$71.2	$0.8
More than 12 months	7.9	—
Total	$79.1	$0.8

Fair Value Of Debt Securities By Contractual Maturities

The fair value of available-for-sale debt securities, summarized by contractual maturities, as of December 31, 2020 and 2019 are as follows:

	2020	2019
	(In Millions)
Less than 1 year	$—	$40.7
1 year - 5 years	117.0	142.0
5 years - 10 years	159.4	132.4
10 years - 15 years	101.2	39.8
15 years - 20 years	66.9	49.2
20 years+	187.7	197.4
Total	$632.2	$601.5

System Energy [Member]

Securities Held

The available-for-sale securities held as of December 31, 2020 and 2019 are summarized as follows:

	Fair Value	Total Unrealized Gains	Total Unrealized Losses
	(In Millions)
2020
Debt Securities	$427.7	$30.0	$0.8
2019
Debt Securities	$386.2	$15.1	$0.3

Available For Sale Securities Continuous Unrealized Loss Position Fair Value

The fair value and gross unrealized losses of available-for-sale debt securities, summarized by length of time that the securities have been in a continuous loss position, are as follows as of December 31, 2020:

	Fair Value	Gross Unrealized Losses
	(In Millions)
Less than 12 months	$28.9	$0.8
More than 12 months	—	—
Total	$28.9	$0.8

The fair value and gross unrealized losses of available-for-sale debt securities, summarized by length of time that the securities have been in a continuous loss position, are as follows as of December 31, 2019:

	Fair Value	Gross Unrealized Losses
	(In Millions)
Less than 12 months	$56.9	$0.3
More than 12 months	0.3	—
Total	$57.2	$0.3

Fair Value Of Debt Securities By Contractual Maturities

The fair value of available-for-sale debt securities, summarized by contractual maturities, as of December 31, 2020 and 2019 are as follows:

	2020	2019
	(In Millions)
Less than 1 year	($1.1)	$8.5
1 year - 5 years	134.7	154.6
5 years - 10 years	141.5	92.3
10 years - 15 years	31.5	13.4
15 years - 20 years	5.3	14.4
20 years+	115.8	103.0
Total	$427.7	$386.2