Preferred Equity (Narratives) (Details)	1 Months Ended			12 Months Ended
	Oct. 31, 2015 USD ($) shares	Sep. 30, 2015 USD ($)	Dec. 31, 2013 USD ($) shares	Dec. 31, 2015 USD ($) $ / shares $ / unit shares		Dec. 31, 2007 shares	Dec. 31, 2014 shares
Preferred Equity [Line Items]
Shares purchased by subsidiaries | shares						160,000
Entergy Louisiana [Member]
Preferred Equity [Line Items]
Preferred units outstanding | shares				0			1,100,000
Preferred Membership Interests, Series A, 8.25% [Member] | Entergy Louisiana [Member]
Preferred Equity [Line Items]
Preferred stock/preferred membership interests rate				8.25%
Preferred Stock, 8.75% Rate [Member] | Entergy Finance Holding Inc [Member]
Preferred Equity [Line Items]
Preferred stock/preferred membership interests rate			8.75%	8.75%	[1]
Temporary Equity, Shares Issued | shares			250,000
Temporary Equity, Par Value | $			$ 100
Temporary Equity, Redemption Price Per Share | $ / shares				$ 100
Adjustments to Additional Paid in Capital, Stock Issued, Issuance Costs | $				$ 751,000
Preferred Stock, Cumulative $100 Par Value, 4.72% Series [Member] | Entergy Arkansas [Member]
Preferred Equity [Line Items]
Preferred stock/preferred membership interests rate				4.72%
Preferred Stock, Cumulative $100 Par Value, 4.75% Series [Member] | Entergy New Orleans [Member]
Preferred Equity [Line Items]
Preferred stock/preferred membership interests rate				4.75%
Preferred Stock, Cumulative One Thousand Dollar Par Value, Seven Point Five Percent Series [Member] | Entergy Utility Holding Company LLC [Member]
Preferred Equity [Line Items]
Preferred stock/preferred membership interests rate	7.50%
Temporary Equity, Shares Issued | shares	110,000
Temporary Equity, Par Value | $	$ 1,000
Temporary Equity, Redemption Price Per Share | $ / shares				$ 1,000
Adjustments to Additional Paid in Capital, Stock Issued, Issuance Costs | $				$ 2,575,000
Preferred Membership Interests Cumulative One Hundred Dollar Liquidation Value Six Point Nine Five Percent Series [Member] | Entergy Louisiana [Member]
Preferred Equity [Line Items]
Preferred stock/preferred membership interests rate				6.95%
Preferred units outstanding | shares				0			1,000,000
Redeemable redemption price per share | $ / unit				0
Stock Redeemed or Called During Period, Value | $		$ 100,000,000
Preferred Membership Interests, Cumulative $100 Liquidation Value, 8.25% Series [Member] | Entergy Gulf States Louisiana [Member]
Preferred Equity [Line Items]
Stock Redeemed or Called During Period, Value | $		$ 10,000,000
Preferred Membership Interests, Cumulative $100 Liquidation Value, 8.25% Series [Member] | Entergy Louisiana [Member]
Preferred Equity [Line Items]
Preferred stock/preferred membership interests rate				8.25%
Preferred units outstanding | shares				0			100,000
Redeemable redemption price per share | $ / unit				0

[1] Dollar amount outstanding is net of $751 thousand of preferred stock issuance costs.