Decommissioning Trust Funds (Tables)

6 Months Ended

Jun. 30, 2017

Securities Held

The securities held as of June 30, 2017 and December 31, 2016 are summarized as follows:

	Fair Value		Total Unrealized Gains		Total Unrealized Losses
	(In Millions)
2017
Equity Securities		$4,389		$1,857		$1
Debt Securities	2,408		45		15
Total		$6,797		$1,902		$16

	Fair Value		Total Unrealized Gains		Total Unrealized Losses
	(In Millions)
2016
Equity Securities		$3,511		$1,673		$1
Debt Securities	2,213		34		27
Total		$5,724		$1,707		$28

Available For Sale Securities Continuous Unrealized Loss Position Fair Value

The fair value and gross unrealized losses of available-for-sale equity and debt securities, summarized by investment type and length of time that the securities have been in a continuous loss position, are as follows as of June 30, 2017:

	Equity Securities				Debt Securities
	Fair Value		Gross Unrealized Losses		Fair Value		Gross Unrealized Losses
	(In Millions)
Less than 12 months		$2		$1		$997		$12
More than 12 months	—		—		47		3
Total		$2		$1		$1,044		$15

The fair value and gross unrealized losses of available-for-sale equity and debt securities, summarized by investment type and length of time that the securities have been in a continuous loss position, are as follows as of December 31, 2016:

	Equity Securities				Debt Securities
	Fair Value		Gross Unrealized Losses		Fair Value		Gross Unrealized Losses
	(In Millions)
Less than 12 months		$23		$1		$1,169		$26
More than 12 months	1		—		20		1
Total		$24		$1		$1,189		$27

Fair Value Of Debt Securities By Contractual Maturities

The fair value of debt securities, summarized by contractual maturities, as of June 30, 2017 and December 31, 2016 are as follows:

	2017		2016
	(In Millions)
less than 1 year		$106		$125
1 year - 5 years	805		763
5 years - 10 years	795		719
10 years - 15 years	111		109
15 years - 20 years	88		73
20 years+	503		424
Total		$2,408		$2,213

Entergy Arkansas [Member]

Securities Held

Entergy Arkansas holds debt and equity securities, classified as available-for-sale, in nuclear decommissioning trust accounts.  The securities held as of June 30, 2017 and December 31, 2016 are summarized as follows:

	Fair Value		Total Unrealized Gains		Total Unrealized Losses
	(In Millions)
2017
Equity Securities		$556.3		$308.0		$—
Debt Securities	328.0		3.3		2.3
Total		$884.3		$311.3		$2.3
2016
Equity Securities		$525.4		$281.5		$—
Debt Securities	309.3		3.4		4.2
Total		$834.7		$284.9		$4.2

Available For Sale Securities Continuous Unrealized Loss Position Fair Value

The fair value and gross unrealized losses of available-for-sale equity and debt securities, summarized by investment type and length of time that the securities have been in a continuous loss position, are as follows as of June 30, 2017:

	Equity Securities				Debt Securities
	Fair Value		Gross Unrealized Losses		Fair Value		Gross Unrealized Losses
	(In Millions)
Less than 12 months		$—		$—		$118.1		$1.7
More than 12 months	—		—		10.1		0.6
Total		$—		$—		$128.2		$2.3

The fair value and gross unrealized losses of available-for-sale equity and debt securities, summarized by investment type and length of time that the securities have been in a continuous loss position, are as follows as of December 31, 2016:

	Equity Securities				Debt Securities
	Fair Value		Gross Unrealized Losses		Fair Value		Gross Unrealized Losses
	(In Millions)
Less than 12 months		$—		$—		$146.7		$4.2
More than 12 months	—		—		—		—
Total		$—		$—		$146.7		$4.2

Fair Value Of Debt Securities By Contractual Maturities

The fair value of debt securities, summarized by contractual maturities, as of June 30, 2017 and December 31, 2016 are as follows:

	2017		2016
	(In Millions)
less than 1 year		$16.8		$16.7
1 year - 5 years	102.6		106.2
5 years - 10 years	183.5		161.2
10 years - 15 years	4.4		7.7
15 years - 20 years	1.1		1.0
20 years+	19.6		16.5
Total		$328.0		$309.3

Entergy Louisiana [Member]

Securities Held

Entergy Louisiana holds debt and equity securities, classified as available-for-sale, in nuclear decommissioning trust accounts.  The securities held as of June 30, 2017 and December 31, 2016 are summarized as follows:

	Fair Value		Total Unrealized Gains		Total Unrealized Losses
	(In Millions)
2017
Equity Securities		$756.6		$395.6		$—
Debt Securities	464.1		10.9		2.9
Total		$1,220.7		$406.5		$2.9
2016
Equity Securities		$715.9		$346.6		$—
Debt Securities	424.8		8.0		5.0
Total		$1,140.7		$354.6		$5.0

Available For Sale Securities Continuous Unrealized Loss Position Fair Value

The fair value and gross unrealized losses of available-for-sale equity and debt securities, summarized by investment type and length of time that the securities have been in a continuous loss position, are as follows as of June 30, 2017:

	Equity Securities				Debt Securities
	Fair Value		Gross Unrealized Losses		Fair Value		Gross Unrealized Losses
	(In Millions)
Less than 12 months		$—		$—		$164.4		$2.4
More than 12 months	—		—		9.7		0.5
Total		$—		$—		$174.1		$2.9

The fair value and gross unrealized losses of available-for-sale equity and debt securities, summarized by investment type and length of time that the securities have been in a continuous loss position, are as follows as of December 31, 2016:

	Equity Securities				Debt Securities
	Fair Value		Gross Unrealized Losses		Fair Value		Gross Unrealized Losses
	(In Millions)
Less than 12 months		$—		$—		$198.8		$4.8
More than 12 months	—		—		4.8		0.2
Total		$—		$—		$203.6		$5.0

Fair Value Of Debt Securities By Contractual Maturities

The fair value of debt securities, summarized by contractual maturities, as of June 30, 2017 and December 31, 2016 are as follows:

	2017		2016
	(In Millions)
less than 1 year		$28.5		$31.4
1 year - 5 years	105.2		99.1
5 years - 10 years	131.9		122.8
10 years - 15 years	44.3		41.4
15 years - 20 years	38.6		30.9
20 years+	115.6		99.2
Total		$464.1		$424.8

System Energy [Member]

Securities Held

System Energy holds debt and equity securities, classified as available-for-sale, in nuclear decommissioning trust accounts.  The securities held as of June 30, 2017 and December 31, 2016 are summarized as follows:

	Fair Value		Total Unrealized Gains		Total Unrealized Losses
	(In Millions)
2017
Equity Securities		$516.9		$257.6		$—
Debt Securities	322.5		3.3		2.3
Total		$839.4		$260.9		$2.3
2016
Equity Securities		$473.9		$221.9		$0.1
Debt Securities	306.6		2.0		4.5
Total		$780.5		$223.9		$4.6

Available For Sale Securities Continuous Unrealized Loss Position Fair Value

The fair value and gross unrealized losses of available-for-sale equity and debt securities, summarized by investment type and length of time that the securities have been in a continuous loss position, are as follows as of June 30, 2017:

	Equity Securities				Debt Securities
	Fair Value		Gross Unrealized Losses		Fair Value		Gross Unrealized Losses
	(In Millions)
Less than 12 months		$—		$—		$199.5		$2.0
More than 12 months	—		—		8.6		0.3
Total		$—		$—		$208.1		$2.3

The fair value and gross unrealized losses of available-for-sale equity and debt securities, summarized by investment type and length of time that the securities have been in a continuous loss position, are as follows as of December 31, 2016:

	Equity Securities				Debt Securities
	Fair Value		Gross Unrealized Losses		Fair Value		Gross Unrealized Losses
	(In Millions)
Less than 12 months		$—		$—		$220.9		$4.4
More than 12 months	—		0.1		0.8		0.1
Total		$—		$0.1		$221.7		$4.5

Fair Value Of Debt Securities By Contractual Maturities

The fair value of debt securities, summarized by contractual maturities, as of June 30, 2017 and December 31, 2016 are as follows:

	2017		2016
	(In Millions)
less than 1 year		$8.6		$6.6
1 year - 5 years	159.6		188.2
5 years - 10 years	86.4		78.5
10 years - 15 years	2.3		1.3
15 years - 20 years	7.8		7.8
20 years+	57.8		24.2
Total		$322.5		$306.6