Leases (Components Of Minimum Lease Payments) (Details) $ in Thousands	Dec. 31, 2015 USD ($)
Current Year, Operating Leases	$ 78,302
Year Two, Operating Leases	64,371
Year Three, Operating Leases	53,073
Year Four, Operating Leases	50,574
Year Five, Operating Leases	33,337
Years thereafter, Operating Leases	79,662
Minimum lease payments, Operating Leases	359,319
Current Year, Capital Leases	4,694
Year Two, Capital Leases	4,694
Year Three, Capital Leases	3,909
Year Four, Capital Leases	3,124
Year Five, Capital Leases	3,065
Years thereafter, Capital Leases	24,778
Minimum lease payments, Capital Leases	44,264
Less: Amount representing interest, Capital Leases	13,918
Present value of net minimum lease payments, Capital Leases	30,346
Entergy Arkansas [Member]
Current Year, Operating Leases	25,358
Year Two, Operating Leases	18,600
Year Three, Operating Leases	12,947
Year Four, Operating Leases	13,555
Year Five, Operating Leases	7,029
Years thereafter, Operating Leases	28,390
Minimum lease payments, Operating Leases	105,879
Entergy Louisiana [Member]
Current Year, Operating Leases	16,757
Year Two, Operating Leases	14,245
Year Three, Operating Leases	12,187
Year Four, Operating Leases	12,677
Year Five, Operating Leases	7,107
Years thereafter, Operating Leases	6,903
Minimum lease payments, Operating Leases	69,876
Entergy Mississippi [Member]
Current Year, Operating Leases	7,139
Year Two, Operating Leases	5,596
Year Three, Operating Leases	4,946
Year Four, Operating Leases	4,619
Year Five, Operating Leases	3,710
Years thereafter, Operating Leases	6,028
Minimum lease payments, Operating Leases	32,038
Current Year, Capital Leases	1,570
Year Two, Capital Leases	1,570
Year Three, Capital Leases	785
Year Four, Capital Leases	0
Year Five, Capital Leases	0
Years thereafter, Capital Leases	0
Minimum lease payments, Capital Leases	3,925
Less: Amount representing interest, Capital Leases	329
Present value of net minimum lease payments, Capital Leases	3,596
Entergy New Orleans [Member]
Current Year, Operating Leases	1,960
Year Two, Operating Leases	1,730
Year Three, Operating Leases	1,416
Year Four, Operating Leases	1,233
Year Five, Operating Leases	1,003
Years thereafter, Operating Leases	1,733
Minimum lease payments, Operating Leases	9,075
Entergy Texas [Member]
Current Year, Operating Leases	5,700
Year Two, Operating Leases	4,841
Year Three, Operating Leases	4,302
Year Four, Operating Leases	3,194
Year Five, Operating Leases	1,666
Years thereafter, Operating Leases	1,695
Minimum lease payments, Operating Leases	21,398
System Energy [Member]
Current Year, Capital Leases	17,188
Year Two, Capital Leases	17,188
Year Three, Capital Leases	17,188
Year Four, Capital Leases	17,188
Year Five, Capital Leases	17,188
Years thereafter, Capital Leases	275,000
Minimum lease payments, Capital Leases	360,940
Less: Amount representing interest, Capital Leases	326,579
Present value of net minimum lease payments, Capital Leases	$ 34,361