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Equity (Accumulated Other Comprehensive Income (Loss))(Details) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2016 | Mar. 31, 2015
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |
Accumulated Other Comprehensive Income (Loss), Net of Tax, Beginning Balance | $ 8,951 | $ (42,307)
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax | 115,055 | (8,776)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax | (94,214) | (8,654)
Other comprehensive income (loss) | 20,841 | (17,430)
Accumulated Other Comprehensive Income (Loss), Net of Tax, Ending Balance | 29,792 | (59,737)
Foreign Currency Translation [Member] |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |
Accumulated Other Comprehensive Income (Loss), Net of Tax, Beginning Balance | 2,028 | 2,669
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax | (284) | (551)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax | 0 | 0
Other comprehensive income (loss) | (284) | (551)
Accumulated Other Comprehensive Income (Loss), Net of Tax, Ending Balance | 1,744 | 2,118
Net Unrealized Investment Gains [Member] |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |
Accumulated Other Comprehensive Income (Loss), Net of Tax, Beginning Balance | 367,557 | 426,695
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax | 25,032 | 12,658
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax | (1,963) | (8,655)
Other comprehensive income (loss) | 23,069 | 4,003
Accumulated Other Comprehensive Income (Loss), Net of Tax, Ending Balance | 390,626 | 430,698
Pension And Other Postretirement Liabilities [Member] |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |
Accumulated Other Comprehensive Income (Loss), Net of Tax, Beginning Balance | (466,604) | (569,789)
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax | 0 | 13
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax | 7,562 | 8,435
Other comprehensive income (loss) | 7,562 | 8,448
Accumulated Other Comprehensive Income (Loss), Net of Tax, Ending Balance | (459,042) | (561,341)
Cash Flow Hedges Net Unrealized Gain [Member] |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |
Accumulated Other Comprehensive Income (Loss), Net of Tax, Beginning Balance | 105,970 | 98,118
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax | 90,307 | (20,896)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax | (99,813) | (8,434)
Other comprehensive income (loss) | (9,506) | (29,330)
Accumulated Other Comprehensive Income (Loss), Net of Tax, Ending Balance | 96,464 | 68,788
Entergy Louisiana [Member] |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |
Accumulated Other Comprehensive Income (Loss), Net of Tax, Beginning Balance | (56,412) |
Other comprehensive income (loss) | (263) | 380
Accumulated Other Comprehensive Income (Loss), Net of Tax, Ending Balance | (56,675) |
Entergy Louisiana [Member] | Pension And Other Postretirement Liabilities [Member] |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |
Accumulated Other Comprehensive Income (Loss), Net of Tax, Beginning Balance | (56,412) | (79,223)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax | (263) | 380
Other comprehensive income (loss) | (263) | 380
Accumulated Other Comprehensive Income (Loss), Net of Tax, Ending Balance | $ (56,675) | $ (78,843)

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- Definition Accumulated change in equity from transactions and other events and circumstances from non-owner sources, net of tax effect, at period end. Excludes Net Income (Loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners. Includes foreign currency translation items, certain pension adjustments, unrealized gains and losses on certain investments in debt and equity securities, other than temporary impairment (OTTI) losses related to factors other than credit losses on available-for-sale and held-to-maturity debt securities that an entity does not intend to sell and it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis, as well as changes in the fair value of derivatives related to the effective portion of a designated cash flow hedge. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=66004124&loc=d3e637-108580 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14 -URI http://asc.fasb.org/extlink&oid=66004124&loc=d3e681-108580 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=66004124&loc=SL7669686-108580 + Details
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