Leases (Future Minimum Lease Payments Sale Leaseback Transactions) (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2016
System Energy [Member] \| Grand Gulf [Member]
Minimum Lease Payments, Sale Leaseback Transactions, Next Twelve Months	$ 17,188
Year Two	17,188
Year Three	17,188
Year Four	17,188
Year Five	17,188
Years thereafter	223,437
Minimum Lease Payments, Sale Leaseback Transactions	309,377
Interest Portion of Minimum Lease Payments, Sale Leaseback Transactions	275,025
Present value of net minimum lease payments	$ 34,352
Entergy Louisiana [Member] \| Waterford 3 [Member]
Minimum Lease Payments, Sale Leaseback Transactions		$ 57,500
Interest Portion of Minimum Lease Payments, Sale Leaseback Transactions		$ 2,300

Amount necessary to reduce minimum lease payments to present value for sale-leaseback transactions accounted for using the deposit method or as a financing.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 840
-SubTopic 30
-Section 50
-Paragraph 1
-Subparagraph (b)
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Amount of minimum lease payments for sale-leaseback transactions accounted for using the deposit method or as a financing.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 840
-SubTopic 40
-Section 50
-Paragraph 2
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Amount of minimum lease payments for sale-leaseback transactions accounted for using the deposit method or as a financing due after the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of minimum lease payments for sale-leaseback transactions accounted for using the deposit method or as a financing due in the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of minimum lease payments for sale-leaseback transactions accounted for using the deposit method or as a financing due in the fourth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of minimum lease payments for sale-leaseback transactions accounted for using the deposit method or as a financing due in the next fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of minimum lease payments for sale-leaseback transactions accounted for using the deposit method or as a financing due in the third fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of minimum lease payments for sale-leaseback transactions accounted for using the deposit method or as a financing due in the second fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Present value of minimum lease payments for sale-leaseback transactions accounted for using the deposit method or as a financing.

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