Decommissioning Trust Funds (Tables)

9 Months Ended

Sep. 30, 2017

Securities Held

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

	Fair Value		Total Unrealized Gains		Total Unrealized Losses
	(In Millions)
2017
Equity Securities		$4,554		$1,983		$—
Debt Securities	2,429		45		14
Total		$6,983		$2,028		$14

	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 September 30, 2017:

	Equity Securities				Debt Securities
	Fair Value		Gross Unrealized Losses		Fair Value		Gross Unrealized Losses
	(In Millions)
Less than 12 months		$5		$—		$732		$5
More than 12 months	—		—		267		9
Total		$5		$—		$999		$14

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 September 30, 2017 and December 31, 2016 are as follows:

	2017		2016
	(In Millions)
less than 1 year		$91		$125
1 year - 5 years	801		763
5 years - 10 years	789		719
10 years - 15 years	130		109
15 years - 20 years	87		73
20 years+	531		424
Total		$2,429		$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 September 30, 2017 and December 31, 2016 are summarized as follows:

	Fair Value		Total Unrealized Gains		Total Unrealized Losses
	(In Millions)
2017
Equity Securities		$576.3		$327.2		$—
Debt Securities	334.1		3.1		2.3
Total		$910.4		$330.3		$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 September 30, 2017:

	Equity Securities				Debt Securities
	Fair Value		Gross Unrealized Losses		Fair Value		Gross Unrealized Losses
	(In Millions)
Less than 12 months		$—		$—		$114.4		$0.6
More than 12 months	—		—		37.3		1.7
Total		$—		$—		$151.7		$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 September 30, 2017 and December 31, 2016 are as follows:

	2017		2016
	(In Millions)
less than 1 year		$11.8		$16.7
1 year - 5 years	107.9		106.2
5 years - 10 years	194.4		161.2
10 years - 15 years	2.6		7.7
15 years - 20 years	1.4		1.0
20 years+	16.0		16.5
Total		$334.1		$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 September 30, 2017 and December 31, 2016 are summarized as follows:

	Fair Value		Total Unrealized Gains		Total Unrealized Losses
	(In Millions)
2017
Equity Securities		$781.2		$420.3		$—
Debt Securities	478.8		10.9		2.8
Total		$1,260.0		$431.2		$2.8
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 September 30, 2017:

	Equity Securities				Debt Securities
	Fair Value		Gross Unrealized Losses		Fair Value		Gross Unrealized Losses
	(In Millions)
Less than 12 months		$—		$—		$127.3		$1.1
More than 12 months	—		—		51.5		1.7
Total		$—		$—		$178.8		$2.8

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 September 30, 2017 and December 31, 2016 are as follows:

	2017		2016
	(In Millions)
less than 1 year		$27.7		$31.4
1 year - 5 years	113.2		99.1
5 years - 10 years	117.1		122.8
10 years - 15 years	50.7		41.4
15 years - 20 years	43.4		30.9
20 years+	126.7		99.2
Total		$478.8		$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 September 30, 2017 and December 31, 2016 are summarized as follows:

	Fair Value		Total Unrealized Gains		Total Unrealized Losses
	(In Millions)
2017
Equity Securities		$541.0		$276.2		$—
Debt Securities	329.6		3.7		1.9
Total		$870.6		$279.9		$1.9
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 September 30, 2017:

	Equity Securities				Debt Securities
	Fair Value		Gross Unrealized Losses		Fair Value		Gross Unrealized Losses
	(In Millions)
Less than 12 months		$—		$—		$135.6		$1.0
More than 12 months	—		—		57.5		0.9
Total		$—		$—		$193.1		$1.9

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		$—		$—		$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 September 30, 2017 and December 31, 2016 are as follows:

	2017		2016
	(In Millions)
less than 1 year		$8.7		$6.6
1 year - 5 years	170.7		188.2
5 years - 10 years	79.1		78.5
10 years - 15 years	4.4		1.3
15 years - 20 years	6.5		7.8
20 years+	60.2		24.2
Total		$329.6		$306.6