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Acquisitions Acquisitions (Narrative) (Details) $ in Thousands | 1 Months Ended | 3 Months Ended
--- | --- | ---
Mar. 31, 2016 USD ($) MW | Mar. 31, 2016 USD ($) MW | Mar. 31, 2015 USD ($)
Payments to Acquire Property, Plant, and Equipment |  | $ (947,778) | $ 0
Union Power Station [Member] |  |  |
Capacity Per Power Block | MW | 495 | 495 |
Payments to Acquire Property, Plant, and Equipment | $ (948,000) |  |
Capacity Of Power Plant Unit | MW | 1,980 |  |
Entergy Arkansas [Member] |  |  |
Payments to Acquire Property, Plant, and Equipment | $ (237,000) | $ (236,947) | 0
Entergy Arkansas [Member] | Union Power Station [Member] |  |  |
Percentage of Undivided Ownership Interest | 25.00% | 25.00% |
Payments to Acquire Property, Plant, and Equipment | $ (236,944) |  |
Power Blocks Purchased | 1 | 1 |
Entergy Louisiana [Member] |  |  |
Payments to Acquire Property, Plant, and Equipment | $ (474,000) | $ (473,888) | 0
Entergy Louisiana [Member] | Union Power Station [Member] |  |  |
Percentage of Undivided Ownership Interest | 50.00% | 50.00% |
Payments to Acquire Property, Plant, and Equipment | $ (473,888) |  |
Power Blocks Purchased | 2 | 2 |
Entergy New Orleans [Member] |  |  |
Payments to Acquire Property, Plant, and Equipment | $ (237,000) | $ (236,944) | $ 0
Entergy New Orleans [Member] | Union Power Station [Member] |  |  |
Percentage of Undivided Ownership Interest | 25.00% | 25.00% |
Payments to Acquire Property, Plant, and Equipment | $ (236,944) |  |
Power Blocks Purchased | 1 | 1 |

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- Definition The cash outflow associated with the acquisition of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale; includes cash outflows to pay for construction of self-constructed assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Investing Activities -URI http://asc.fasb.org/extlink&oid=6516133 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3213-108585 + Details
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