Leases (Components Of Minimum Lease Payments) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013
2014, Operating Leases	$ 106,175
2015, Operating Leases	89,999
2016, Operating Leases	64,758
2017, Operating Leases	46,731
2018, Operating Leases	36,778
Years thereafter, Operating Leases	111,484
Minimum lease payments, Operating Leases	455,925
2014, Capital Leases	4,694
2015, Capital Leases	4,615
2016, Capital Leases	4,457
2017, Capital Leases	4,457
2018, Capital Leases	3,672
Years thereafter, Capital Leases	30,551
Minimum lease payments, Capital Leases	52,446
Less: Amount representing interest, Capital Leases	18,135
Present value of net minimum lease payments, Capital Leases	34,311
Entergy Arkansas [Member]
2014, Operating Leases	32,124
2015, Operating Leases	33,069
2016, Operating Leases	17,999
2017, Operating Leases	11,019
2018, Operating Leases	6,669
Years thereafter, Operating Leases	3,908
Minimum lease payments, Operating Leases	104,788
2014, Capital Leases	237
2015, Capital Leases	158
2016, Capital Leases	0
2017, Capital Leases	0
2018, Capital Leases	0
Years thereafter, Capital Leases	0
Minimum lease payments, Capital Leases	395
Less: Amount representing interest, Capital Leases	216
Present value of net minimum lease payments, Capital Leases	179
Entergy Gulf States Louisiana [Member]
2014, Operating Leases	19,735
2015, Operating Leases	10,294
2016, Operating Leases	9,551
2017, Operating Leases	8,547
2018, Operating Leases	7,753
Years thereafter, Operating Leases	34,981
Minimum lease payments, Operating Leases	90,861
Entergy Louisiana [Member]
2014, Operating Leases	11,398
2015, Operating Leases	9,825
2016, Operating Leases	6,574
2017, Operating Leases	4,580
2018, Operating Leases	3,078
Years thereafter, Operating Leases	3,706
Minimum lease payments, Operating Leases	39,161
Entergy Mississippi [Member]
2014, Operating Leases	7,155
2015, Operating Leases	6,162
2016, Operating Leases	4,379
2017, Operating Leases	2,992
2018, Operating Leases	2,300
Years thereafter, Operating Leases	4,306
Minimum lease payments, Operating Leases	27,294
2014, Capital Leases	1,570
2015, Capital Leases	1,570
2016, Capital Leases	1,570
2017, Capital Leases	1,570
2018, Capital Leases	785
Years thereafter, Capital Leases	0
Minimum lease payments, Capital Leases	7,065
Less: Amount representing interest, Capital Leases	1,081
Present value of net minimum lease payments, Capital Leases	5,984
Entergy New Orleans [Member]
2014, Operating Leases	2,121
2015, Operating Leases	2,083
2016, Operating Leases	1,720
2017, Operating Leases	1,300
2018, Operating Leases	883
Years thereafter, Operating Leases	1,988
Minimum lease payments, Operating Leases	10,095
Entergy Texas [Member]
2014, Operating Leases	6,442
2015, Operating Leases	5,620
2016, Operating Leases	4,487
2017, Operating Leases	3,318
2018, Operating Leases	2,681
Years thereafter, Operating Leases	2,356
Minimum lease payments, Operating Leases	24,904
System Energy [Member]
2014, Capital Leases	51,637
2015, Capital Leases	52,253
2016, Capital Leases	13,750
2017, Capital Leases	13,750
2018, Capital Leases	13,750
Years thereafter, Capital Leases	247,500
Minimum lease payments, Capital Leases	392,640
Less: Amount representing interest, Capital Leases	295,226
Present value of net minimum lease payments, Capital Leases	$ 97,414