Leases Leases (Lease, Cost) (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2019
Operating Lease, Expense	$ 15,255	$ 30,976
Finance Lease, Right-of-Use Asset, Amortization	4,980	7,892
Finance Lease, Interest Expense	1,081	1,834
Entergy Arkansas [Member]
Operating Lease, Expense	3,124	6,419
Finance Lease, Right-of-Use Asset, Amortization	1,198	1,828
Finance Lease, Interest Expense	198	303
Entergy Louisiana [Member]
Operating Lease, Expense	2,824	5,850
Finance Lease, Right-of-Use Asset, Amortization	1,975	3,000
Finance Lease, Interest Expense	299	451
Entergy Mississippi [Member]
Operating Lease, Expense	1,716	3,468
Finance Lease, Right-of-Use Asset, Amortization	691	1,039
Finance Lease, Interest Expense	117	176
Entergy New Orleans [Member]
Operating Lease, Expense	351	709
Finance Lease, Right-of-Use Asset, Amortization	342	518
Finance Lease, Interest Expense	55	85
Entergy Texas [Member]
Operating Lease, Expense	977	2,062
Finance Lease, Right-of-Use Asset, Amortization	325	630
Finance Lease, Interest Expense	$ 53	$ 99