Comprehensive Income (ENTERGY LOUISIANA, LLC) (Parenthetical) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Other comprehensive income, defined benefit plans, tax	$ 131,198	$ 14,387	$ 34,415
Entergy Louisiana [Member]
Other comprehensive income, defined benefit plans, tax	$ 7,363	$ 1,818	$ 1,692