Leases Lease, Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Operating Lease, Weighted Average Remaining Lease Term	4 years 5 months 8 days	4 years 9 months 25 days
Finance Lease, Weighted Average Remaining Lease Term	6 years 2 months 4 days	6 years 4 months 2 days
Operating Lease, Weighted Average Discount Rate, Percent	3.37%	3.58%
Finance Lease, Weighted Average Discount Rate, Percent	3.96%	4.42%
Operating Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration]	Other Liabilities, Current	Other Liabilities, Current
Finance Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration]	Other Liabilities, Current	Other Liabilities, Current
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration]	Deferred Credits and Other Liabilities	Deferred Credits and Other Liabilities
Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration]	Deferred Credits and Other Liabilities	Deferred Credits and Other Liabilities
Entergy Louisiana [Member]
Operating Lease, Liability, Current	$ 12,520	$ 11,934
Finance Lease, Liability, Current	4,001	3,821
Operating Lease, Liability, Noncurrent	33,931	31,260
Finance Lease, Liability, Noncurrent	$ 15,006	$ 12,603
Operating Lease, Weighted Average Remaining Lease Term	4 years 7 months 24 days	4 years 8 months 19 days
Finance Lease, Weighted Average Remaining Lease Term	5 years 6 months 25 days	5 years 2 months 12 days
Operating Lease, Weighted Average Discount Rate, Percent	2.93%	3.11%
Finance Lease, Weighted Average Discount Rate, Percent	3.08%	3.33%
Entergy Mississippi [Member]
Operating Lease, Liability, Current	$ 5,866	$ 5,738
Finance Lease, Liability, Current	1,843	1,644
Operating Lease, Liability, Noncurrent	10,976	10,867
Finance Lease, Liability, Noncurrent	$ 7,271	$ 5,808
Operating Lease, Weighted Average Remaining Lease Term	5 years 4 months 9 days	5 years 3 months 18 days
Finance Lease, Weighted Average Remaining Lease Term	5 years 7 months 17 days	5 years 5 months 8 days
Operating Lease, Weighted Average Discount Rate, Percent	3.00%	3.43%
Finance Lease, Weighted Average Discount Rate, Percent	2.87%	3.22%
Entergy New Orleans [Member]
Operating Lease, Liability, Current	$ 1,491	$ 1,406
Finance Lease, Liability, Current	812	686
Operating Lease, Liability, Noncurrent	3,994	3,819
Finance Lease, Liability, Noncurrent	$ 3,211	$ 2,741
Operating Lease, Weighted Average Remaining Lease Term	5 years 4 months 6 days	5 years 9 months 10 days
Finance Lease, Weighted Average Remaining Lease Term	5 years 11 months 8 days	5 years 8 months 8 days
Operating Lease, Weighted Average Discount Rate, Percent	2.99%	3.09%
Finance Lease, Weighted Average Discount Rate, Percent	3.03%	3.35%
Entergy Texas [Member]
Operating Lease, Liability, Current	$ 4,489	$ 4,277
Finance Lease, Liability, Current	1,476	1,327
Operating Lease, Liability, Noncurrent	10,505	10,469
Finance Lease, Liability, Noncurrent	$ 6,107	$ 4,392
Operating Lease, Weighted Average Remaining Lease Term	3 years 11 months 8 days	4 years 3 months 18 days
Finance Lease, Weighted Average Remaining Lease Term	5 years 11 months 19 days	5 years 4 months 20 days
Operating Lease, Weighted Average Discount Rate, Percent	3.04%	3.07%
Finance Lease, Weighted Average Discount Rate, Percent	2.79%	3.22%
Entergy Arkansas [Member]
Operating Lease, Liability, Current	$ 12,695	$ 11,942
Finance Lease, Liability, Current	2,964	2,660
Operating Lease, Liability, Noncurrent	43,420	43,914
Finance Lease, Liability, Noncurrent	$ 12,079	$ 9,788
Operating Lease, Weighted Average Remaining Lease Term	5 years 1 month 17 days	5 years 8 months 26 days
Finance Lease, Weighted Average Remaining Lease Term	5 years 10 months 20 days	5 years 7 months 6 days
Operating Lease, Weighted Average Discount Rate, Percent	3.10%	3.34%
Finance Lease, Weighted Average Discount Rate, Percent	2.80%	3.18%