Leases Lease, Cost (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2019 USD ($)
Operating Lease, Expense	$ 63,566
Finance Lease, Right-of-Use Asset, Amortization	16,048
Finance Lease, Interest Expense	3,667
Entergy Louisiana [Member]
Operating Lease, Expense	11,975
Finance Lease, Right-of-Use Asset, Amortization	5,940
Finance Lease, Interest Expense	895
Entergy Mississippi [Member]
Operating Lease, Expense	6,927
Finance Lease, Right-of-Use Asset, Amortization	2,097
Finance Lease, Interest Expense	353
Entergy New Orleans [Member]
Operating Lease, Expense	1,406
Finance Lease, Right-of-Use Asset, Amortization	1,042
Finance Lease, Interest Expense	168
Entergy Texas [Member]
Operating Lease, Expense	4,259
Finance Lease, Right-of-Use Asset, Amortization	1,568
Finance Lease, Interest Expense	241
Entergy Arkansas [Member]
Operating Lease, Expense	13,213
Finance Lease, Right-of-Use Asset, Amortization	3,643
Finance Lease, Interest Expense	$ 594