Summary Of Significant Accounting Policies (Schedule Of Earnings Per Share, Basic And Diluted) (Details) (USD $)	3 Months Ended								12 Months Ended
	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Basic earnings per share
Net income (loss) attributable to Entergy Corporation	$ 146,929,000	$ 239,850,000	$ 163,723,000	$ 161,400,000	$ 296,267,000	$ 337,088,000	$ 365,001,000	$ (151,683,000)	$ 711,902,000	$ 846,673,000	$ 1,346,439,000
Net Income Attributable to Entergy Corporation, Shares									178,211,192	177,324,813	177,430,208
Basic earnings per share (in usd per share)	$ 0.82	$ 1.35	$ 0.92	$ 0.91	$ 1.67	$ 1.90	$ 2.06	$ (0.86)	$ 3.99	$ 4.77	$ 7.59
Average dilutive effect of:
Diluted earnings per share, Shares									178,570,400	177,737,565	178,370,695
Diluted earnings per share (in usd per share)	$ 0.82	$ 1.34	$ 0.92	$ 0.90	$ 1.67	$ 1.89	$ 2.06	$ (0.86)	$ 3.99	$ 4.76	$ 7.55
Parent Company [Member]
Basic earnings per share
Net income (loss) attributable to Entergy Corporation									711,900,000	846,700,000	1,346,400,000
Net Income Attributable to Entergy Corporation, Shares									178,200,000	177,300,000	177,400,000
Basic earnings per share (in usd per share)									$ 3.99	$ 4.77	$ 7.59
Average dilutive effect of:
Stock options, Shares									100,000	300,000	1,000,000
Stock options $/share									$ 0.00	$ (0.01)	$ (0.04)
Equity units, Income									$ 300,000	$ 100,000	$ 0
Diluted earnings per share, Shares									178,600,000	177,700,000	178,400,000
Diluted earnings per share (in usd per share)									$ 3.99	$ 4.76	$ 7.55