Leases (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 1988
Operating Lease, Expense	$ 65,463	$ 69,067
Finance Lease, Right-of-Use Asset, Amortization	13,493	12,483
Finance Lease, Interest Expense	2,702	2,845
Short-term Lease, Cost	$ 5,400	$ 2,800
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]	Public Utilities, Property, Plant and Equipment, Plant in Service	Public Utilities, Property, Plant and Equipment, Plant in Service
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]	Public Utilities, Property, Plant and Equipment, Plant in Service	Public Utilities, Property, Plant and Equipment, Plant in Service
Entergy Arkansas [Member]
Operating Lease, Right-of-Use Asset	$ 56,000	$ 56,099
Finance Lease, Right-of-Use Asset	13,493	15,043
Operating Lease, Expense	15,435	15,087
Finance Lease, Right-of-Use Asset, Amortization	3,048	2,860
Finance Lease, Interest Expense	402	432
Short-term Lease, Cost	1,700	826
Entergy Louisiana [Member]
Operating Lease, Right-of-Use Asset	46,137	46,443
Finance Lease, Right-of-Use Asset	18,540	19,007
Operating Lease, Expense	15,016	14,368
Finance Lease, Right-of-Use Asset, Amortization	4,259	3,938
Finance Lease, Interest Expense	592	607
Short-term Lease, Cost	1,800	934
Entergy Mississippi [Member]
Operating Lease, Right-of-Use Asset	23,624	16,831
Finance Lease, Right-of-Use Asset	8,578	9,114
Operating Lease, Expense	7,510	7,018
Finance Lease, Right-of-Use Asset, Amortization	1,962	1,766
Finance Lease, Interest Expense	261	270
Short-term Lease, Cost	900	703
Entergy New Orleans [Member]
Operating Lease, Right-of-Use Asset	5,906	5,480
Finance Lease, Right-of-Use Asset	4,342	4,023
Operating Lease, Expense	1,755	1,745
Finance Lease, Right-of-Use Asset, Amortization	906	731
Finance Lease, Interest Expense	134	124
Short-term Lease, Cost	200	77
Entergy Texas [Member]
Operating Lease, Right-of-Use Asset	17,076	14,986
Finance Lease, Right-of-Use Asset	8,094	7,583
Operating Lease, Expense	5,624	5,370
Finance Lease, Right-of-Use Asset, Amortization	1,629	1,493
Finance Lease, Interest Expense	230	214
Short-term Lease, Cost	$ 800	261
System Energy [Member] | Grand Gulf [Member]
Sale Leaseback Transaction, Net Book Value			$ 500,000
Net regulatory liability related to sale and leaseback transaction		$ 55,600