Basis of Presentation Basis of Presentation (Narrative) (Details) - Entergy New Orleans [Member] - USD ($) $ in Thousands	10 Months Ended
	Oct. 31, 2015	Sep. 30, 2015	Sep. 01, 2015	Dec. 31, 2014
Purchase price of net assets that support Algiers customers			$ 85,000
Long-term payable due to Entergy Louisiana		$ 25,500		$ 82,316
Subsequent Event [Member]
Cash Paid to Entergy Louisiana for Algiers Assets	$ 58,700