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Rate Matters and Regulation Rate Matters and Regulation (Details) (USD $) | 3 Months Ended
--- | ---
Jun. 30, 2014
Section 206 Complaint [Member] |
Reduction of Revenue | $ 1,000,000
Regional Haze [Member] |
Estimated Environmental Capital Costs | $ 1,100,000,000

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- Definition Estimated Environmental Capital Costs + References No definition available. + Details
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Namespace Prefix: | oge_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition Reduction of Revenue + References No definition available. + Details
Name: | oge_ReductionofRevenue
Namespace Prefix: | oge_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration