Schedule II - Valuation And Qualifying Accounts (Details) (Allowance for Doubtful Accounts [Member], USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Period	$ 34,311	$ 31,956	$ 31,159
Additions Charged to Income or Regulatory Assets	4,573	2,355	2,448
Other Changes Deductions from Provisions	3,221	0	1,651
Balance at End of Period	35,663	34,311	31,956
Entergy Arkansas [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Period	30,113	28,343	26,155
Additions Charged to Income or Regulatory Assets	2,881	1,770	2,188
Other Changes Deductions from Provisions	747	0	0
Balance at End of Period	32,247	30,113	28,343
Entergy Gulf States Louisiana [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Period	909	711	843
Additions Charged to Income or Regulatory Assets	326	198	123
Other Changes Deductions from Provisions	610	0	255
Balance at End of Period	625	909	711
Entergy Louisiana [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Period	965	867	1,147
Additions Charged to Income or Regulatory Assets	516	98	121
Other Changes Deductions from Provisions	497	0	401
Balance at End of Period	984	965	867
Entergy Mississippi [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Period	906	910	756
Additions Charged to Income or Regulatory Assets	269	(4)	154
Other Changes Deductions from Provisions	302	0	0
Balance at End of Period	873	906	910
Entergy New Orleans [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Period	974	446	465
Additions Charged to Income or Regulatory Assets	99	528	12
Other Changes Deductions from Provisions	811	0	31
Balance at End of Period	262	974	446
Entergy Texas [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Period	443	680	1,461
Additions Charged to Income or Regulatory Assets	483	(237)	(21)
Other Changes Deductions from Provisions	254	0	760
Balance at End of Period	$ 672	$ 443	$ 680