Decommissioning Trust Funds (Tables)

6 Months Ended

Jun. 30, 2018

Securities Held

The available-for-sale securities held as of June 30, 2018 and December 31, 2017 are summarized as follows:

	Fair Value		Total Unrealized Gains		Total Unrealized Losses
	(In Millions)
2018
Debt Securities		$2,620		$20		$53
2017
Equity Securities		$4,662		$2,131		$1
Debt Securities	2,550		44		16
Total		$7,212		$2,175		$17

Available For Sale Securities Continuous Unrealized Loss Position Fair Value

The fair value and gross unrealized losses of the available-for-sale 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, 2018:

	Debt Securities
	Fair Value		Gross Unrealized Losses
	(In Millions)
Less than 12 months		$1,624		$40
More than 12 months	229		13
Total		$1,853		$53

The fair value and gross unrealized losses of available-for-sale 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, 2017:

	Equity Securities				Debt Securities
	Fair Value		Gross Unrealized Losses		Fair Value		Gross Unrealized Losses
	(In Millions)
Less than 12 months		$8		$1		$1,099		$7
More than 12 months	—		—		265		9
Total		$8		$1		$1,364		$16

Fair Value Of Debt Securities By Contractual Maturities

The fair value of debt securities, summarized by contractual maturities, as of June 30, 2018 and December 31, 2017 are as follows:

	2018		2017
	(In Millions)
less than 1 year		$131		$74
1 year - 5 years	963		902
5 years - 10 years	693		812
10 years - 15 years	148		147
15 years - 20 years	105		100
20 years+	580		515
Total		$2,620		$2,550

Entergy Arkansas [Member]

Securities Held

The available-for-sale securities held as of June 30, 2018 and December 31, 2017 are summarized as follows:

	Fair Value		Total Unrealized Gains		Total Unrealized Losses
	(In Millions)
2018
Debt Securities		$341.7		$0.4		$9.9
2017
Equity Securities		$596.7		$354.9		$—
Debt Securities	348.2		2.1		3.0
Total		$944.9		$357.0		$3.0

Available For Sale Securities Continuous Unrealized Loss Position Fair Value

The fair value and gross unrealized losses of the available-for-sale 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, 2018:

	Debt Securities
	Fair Value		Gross Unrealized Losses
	(In Millions)
Less than 12 months		$266.6		$7.9
More than 12 months	34.4		2.0
Total		$301.0		$9.9

The fair value and gross unrealized losses of the available-for-sale 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, 2017:

	Equity Securities				Debt Securities
	Fair Value		Gross Unrealized Losses		Fair Value		Gross Unrealized Losses
	(In Millions)
Less than 12 months		$—		$—		$168.0		$1.2
More than 12 months	—		—		41.4		1.8
Total		$—		$—		$209.4		$3.0

Fair Value Of Debt Securities By Contractual Maturities

The fair value of debt securities, summarized by contractual maturities, as of June 30, 2018 and December 31, 2017 are as follows:

	2018		2017
	(In Millions)
less than 1 year		$29.5		$13.0
1 year - 5 years	161.6		123.4
5 years - 10 years	115.4		180.6
10 years - 15 years	3.4		4.8
15 years - 20 years	5.9		3.4
20 years+	25.9		23.0
Total		$341.7		$348.2

Entergy Louisiana [Member]

Securities Held

The available-for-sale securities held as of June 30, 2018 and December 31, 2017 are summarized as follows:

	Fair Value		Total Unrealized Gains		Total Unrealized Losses
	(In Millions)
2018
Debt Securities		$513.8		$4.7		$10.3
2017
Equity Securities		$818.3		$461.2		$—
Debt Securities	493.8		10.9		3.6
Total		$1,312.1		$472.1		$3.6

Available For Sale Securities Continuous Unrealized Loss Position Fair Value

The fair value and gross unrealized losses of the available-for-sale 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, 2018:

	Debt Securities
	Fair Value		Gross Unrealized Losses
	(In Millions)
Less than 12 months		$287.6		$6.3
More than 12 months	75.5		4.0
Total		$363.1		$10.3

The fair value and gross unrealized losses of the available-for-sale 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, 2017:

	Equity Securities				Debt Securities
	Fair Value		Gross Unrealized Losses		Fair Value		Gross Unrealized Losses
	(In Millions)
Less than 12 months		$—		$—		$135.3		$1.1
More than 12 months	—		—		84.4		2.5
Total		$—		$—		$219.7		$3.6

Fair Value Of Debt Securities By Contractual Maturities

The fair value of debt securities, summarized by contractual maturities, as of June 30, 2018 and December 31, 2017 are as follows:

	2018		2017
	(In Millions)
less than 1 year		$29.5		$23.2
1 year - 5 years	140.5		122.8
5 years - 10 years	101.7		109.3
10 years - 15 years	53.7		52.7
15 years - 20 years	45.0		50.7
20 years+	143.4		135.1
Total		$513.8		$493.8

System Energy [Member]

Securities Held

The available-for-sale securities held as of June 30, 2018 and December 31, 2017 are summarized as follows:

	Fair Value		Total Unrealized Gains		Total Unrealized Losses
	(In Millions)
2018
Debt Securities		$324.2		$1.6		$5.7
2017
Equity Securities		$575.2		$308.6		$—
Debt Securities	330.5		4.2		1.2
Total		$905.7		$312.8		$1.2

Available For Sale Securities Continuous Unrealized Loss Position Fair Value

The fair value and gross unrealized losses of the available-for-sale 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, 2018:

		Debt Securities
		Fair Value		Gross Unrealized Losses
	(In Millions)
Less than 12 months			$187.0		$5.1
More than 12 months		9.2		0.6
Total			$196.2		$5.7

The fair value and gross unrealized losses of the available-for-sale 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, 2017:

	Equity Securities				Debt Securities
	Fair Value		Gross Unrealized Losses		Fair Value		Gross Unrealized Losses
	(In Millions)
Less than 12 months		$—		$—		$196.9		$1.0
More than 12 months	—		—		10.4		0.2
Total		$—		$—		$207.3		$1.2

Fair Value Of Debt Securities By Contractual Maturities

The fair value of debt securities, summarized by contractual maturities, as of June 30, 2018 and December 31, 2017 are as follows:

	2018		2017
	(In Millions)
less than 1 year		$9.7		$4.1
1 year - 5 years	169.2		173.0
5 years - 10 years	71.6		78.5
10 years - 15 years	2.7		1.0
15 years - 20 years	11.3		6.9
20 years+	59.7		67.0
Total		$324.2		$330.5