Leases Lease, Terms and Discount Rate (Details)	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%
Entergy Louisiana [Member]
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, 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, 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, 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, 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%