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Rate And Regulatory Matters (Payments or Receipts Among Utility Operating Companies Production Cost Based) (Details) (Subsequent Event [Member], USD $) In Millions, unless otherwise specified | Apr. 30, 2014
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Entergy Arkansas [Member] |
Payments (receipts) based on production costs | $ 67
Entergy Gulf States [Member] |
Payments (receipts) based on production costs | (33)
Entergy Louisiana [Member] |
Payments (receipts) based on production costs | 0
Entergy Mississippi [Member] |
Payments (receipts) based on production costs | (11)
Entergy New Orleans [Member] |
Payments (receipts) based on production costs | 2
Entergy Texas [Member] |
Payments (receipts) based on production costs | $ (25)

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- Definition Payments (receipts) based on production costs. + References No definition available. + Details
Name: | etr_PaymentsReceiptsBasedOnProductionCosts
Namespace Prefix: | etr_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant