Leases (Components Of Minimum Lease Payments) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014
Current Year, Operating Leases	$ 90,010
Year Two, Operating Leases	77,060
Year Three, Operating Leases	62,103
Year Four, Operating Leases	49,630
Year Five, Operating Leases	47,527
Years thereafter, Operating Leases	95,530
Minimum lease payments, Operating Leases	421,860
Current Year, Capital Leases	4,615
Year Two, Capital Leases	4,457
Year Three, Capital Leases	4,457
Year Four, Capital Leases	3,672
Year Five, Capital Leases	2,887
Years thereafter, Capital Leases	27,664
Minimum lease payments, Capital Leases	47,752
Less: Amount representing interest, Capital Leases	15,773
Present value of net minimum lease payments, Capital Leases	31,979
Entergy Arkansas [Member]
Current Year, Operating Leases	28,647
Year Two, Operating Leases	23,674
Year Three, Operating Leases	16,501
Year Four, Operating Leases	10,736
Year Five, Operating Leases	11,365
Years thereafter, Operating Leases	8,412
Minimum lease payments, Operating Leases	99,335
Entergy Gulf States Louisiana [Member]
Current Year, Operating Leases	12,643
Year Two, Operating Leases	10,880
Year Three, Operating Leases	10,035
Year Four, Operating Leases	9,100
Year Five, Operating Leases	10,795
Years thereafter, Operating Leases	26,671
Minimum lease payments, Operating Leases	80,124
Entergy Louisiana [Member]
Current Year, Operating Leases	11,006
Year Two, Operating Leases	9,695
Year Three, Operating Leases	7,784
Year Four, Operating Leases	6,343
Year Five, Operating Leases	5,003
Years thereafter, Operating Leases	5,458
Minimum lease payments, Operating Leases	45,289
Entergy Mississippi [Member]
Current Year, Operating Leases	6,885
Year Two, Operating Leases	5,388
Year Three, Operating Leases	4,020
Year Four, Operating Leases	3,376
Year Five, Operating Leases	3,073
Years thereafter, Operating Leases	3,212
Minimum lease payments, Operating Leases	25,954
Current Year, Capital Leases	1,570
Year Two, Capital Leases	1,570
Year Three, Capital Leases	1,570
Year Four, Capital Leases	785
Year Five, Capital Leases	0
Years thereafter, Capital Leases	0
Minimum lease payments, Capital Leases	5,495
Less: Amount representing interest, Capital Leases	656
Present value of net minimum lease payments, Capital Leases	4,839
Entergy New Orleans [Member]
Current Year, Operating Leases	2,115
Year Two, Operating Leases	1,856
Year Three, Operating Leases	1,587
Year Four, Operating Leases	1,264
Year Five, Operating Leases	1,087
Years thereafter, Operating Leases	2,227
Minimum lease payments, Operating Leases	10,136
Entergy Texas [Member]
Current Year, Operating Leases	5,837
Year Two, Operating Leases	5,111
Year Three, Operating Leases	4,239
Year Four, Operating Leases	3,707
Year Five, Operating Leases	2,719
Years thereafter, Operating Leases	2,981
Minimum lease payments, Operating Leases	24,594
System Energy [Member]
Current Year, Capital Leases	52,253
Year Two, Capital Leases	13,750
Year Three, Capital Leases	13,750
Year Four, Capital Leases	13,750
Year Five, Capital Leases	13,750
Years thereafter, Capital Leases	233,750
Minimum lease payments, Capital Leases	341,003
Less: Amount representing interest, Capital Leases	290,332
Present value of net minimum lease payments, Capital Leases	$ 50,671