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Decommissioning Trust Funds (Tables)
 3 Months Ended
Mar. 31, 2023
Securities Held
The available-for-sale securities held as of March 31, 2023 and December 31, 2022 are summarized as follows:
Fair
Value		Total
Unrealized
Gains		Total
Unrealized
Losses
(In Millions)
2023
Debt Securities$1,707 $8 $160 
2022
Debt Securities$1,655 $4 $201 
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 had been in a continuous loss position, were as follows as of March 31, 2023 and December 31, 2022:
March 31, 2023December 31, 2022
Fair
Value		Gross
Unrealized
Losses		Fair
Value		Gross
Unrealized
Losses
(In Millions)
Less than 12 months$391 $13 $840 $63 
More than 12 months961 147 666 138 
Total$1,352 $160 $1,506 $201 
Fair Value Of Debt Securities By Contractual Maturities
The fair value of available-for-sale debt securities, summarized by contractual maturities, as of March 31, 2023 and December 31, 2022 were as follows:
20232022
(In Millions)
Less than 1 year$70 $62 
1 year - 5 years516 520 
5 years - 10 years496 461 
10 years - 15 years111 117 
15 years - 20 years161 161 
20 years+353 334 
Total$1,707 $1,655 
Entergy Arkansas [Member]  
Securities Held The available-for-sale securities held as of March 31, 2023 and December 31, 2022 are summarized as follows:
Fair
Value		Total
Unrealized
Gains		Total
Unrealized
Losses
(In Millions)
2023
Debt Securities$479.4 $0.9 $56.8 
2022
Debt Securities$470.7 $0.2 $69.3 
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 had been in a continuous loss position, were as follows as of March 31, 2023 and December 31, 2022:
March 31, 2023December 31, 2022
Fair
Value		Gross
Unrealized
Losses		Fair
Value		Gross
Unrealized
Losses
(In Millions)
Less than 12 months$52.3 $1.4 $197.6 $18.8 
More than 12 months380.4 55.4 260.1 50.5 
Total$432.7 $56.8 $457.7 $69.3 
Fair Value Of Debt Securities By Contractual Maturities
The fair value of available-for-sale debt securities, summarized by contractual maturities, as of March 31, 2023 and December 31, 2022 were as follows:
 20232022
 (In Millions)
Less than 1 year$28.7 $21.2 
1 year - 5 years153.6 159.7 
5 years - 10 years194.2 191.7 
10 years - 15 years41.6 38.0 
15 years - 20 years43.0 42.6 
20 years+18.3 17.5 
Total$479.4 $470.7 
Entergy Louisiana [Member]  
Securities Held The available-for-sale securities held as of March 31, 2023 and December 31, 2022 are summarized as follows:
Fair
Value		Total
Unrealized
Gains		Total
Unrealized
Losses
(In Millions)
2023
Debt Securities$759.0 $5.4 $50.4 
2022
Debt Securities$725.1 $3.5 $67.5 
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 had been in a continuous loss position, were as follows as of March 31, 2023 and December 31, 2022:
March 31, 2023December 31, 2022
Fair
Value		Gross
Unrealized
Losses		Fair
Value		Gross
Unrealized
Losses
(In Millions)
Less than 12 months$258.1 $6.7 $409.9 $24.6 
More than 12 months304.8 43.7 207.5 42.9 
Total$562.9 $50.4 $617.4 $67.5 
Fair Value Of Debt Securities By Contractual Maturities
The fair value of available-for-sale debt securities, summarized by contractual maturities, as of March 31, 2023 and December 31, 2022 were as follows:
20232022
(In Millions)
Less than 1 year$37.1 $33.6 
1 year - 5 years168.4 159.1 
5 years - 10 years176.4 161.7 
10 years - 15 years62.8 67.1 
15 years - 20 years80.0 83.3 
20 years+234.3 220.3 
Total$759.0 $725.1 
System Energy [Member]  
Securities Held The available-for-sale securities held as of March 31, 2023 and December 31, 2022 are summarized as follows:
Fair
Value		Total
Unrealized
Gains		Total
Unrealized
Losses
(In Millions)
2023
Debt Securities$468.1 $2.1 $52.6 
2022
Debt Securities$459.7 $0.7 $63.7 
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 had been in a continuous loss position, were as follows as of March 31, 2023 and December 31, 2022:
March 31, 2023December 31, 2022
Fair
Value		Gross
Unrealized
Losses		Fair
Value		Gross
Unrealized
Losses
(In Millions)
Less than 12 months$80.8 $4.3 $231.9 $19.2 
More than 12 months275.2 48.3 198.0 44.5 
Total$356.0 $52.6 $429.9 $63.7 
Fair Value Of Debt Securities By Contractual Maturities
The fair value of available-for-sale debt securities, summarized by contractual maturities, as of March 31, 2023 and December 31, 2022 were as follows:
20232022
(In Millions)
Less than 1 year$3.8 $6.8 
1 year - 5 years193.9 201.7 
5 years - 10 years125.2 107.1 
10 years - 15 years6.8 11.7 
15 years - 20 years38.1 35.0 
20 years+100.3 97.4 
Total$468.1 $459.7