Property, Plant, And Equipment (Narrative) (Details) (USD $)	Jun. 30, 2014	Dec. 31, 2013
Construction expenditures in accounts payable	$ 146,600,000	$ 166,000,000
Economic transition payments	4,108,256,000	3,933,416,000
Entergy Arkansas [Member]
Construction expenditures in accounts payable	54,000,000	61,900,000
Economic transition payments	794,294,000	723,771,000
Entergy Gulf States Louisiana [Member]
Construction expenditures in accounts payable	24,200,000	13,100,000
Economic transition payments	414,700,000	403,084,000
Entergy Louisiana [Member]
Construction expenditures in accounts payable	19,400,000	31,100,000
Economic transition payments	491,255,000	479,086,000
Entergy Mississippi [Member]
Construction expenditures in accounts payable	700,000	2,800,000
Economic transition payments	6,591,000	6,401,000
Entergy New Orleans [Member]
Construction expenditures in accounts payable	300,000	1,700,000
Economic transition payments	2,427,000	2,347,000
Entergy Texas [Member]
Construction expenditures in accounts payable	7,400,000	10,900,000
Economic transition payments	4,477,000	4,349,000
System Energy [Member]
Construction expenditures in accounts payable	10,400,000	6,700,000
Economic transition payments	636,717,000	616,157,000
Vermont Yankee [Member]
Clean energy development support		5,000,000
Economic transitional payments		10,000,000
Restoration liability		25,000,000
VERMONT | Vermont Yankee [Member]
Economic transitional payments		$ 5,000,000