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Rate Matters and Regulation Rate Matters and Regulation (Details) (Section 206 Complaint [Member], USD $) In Millions, unless otherwise specified | 3 Months Ended
--- | ---
Mar. 31, 2014
Section 206 Complaint [Member] |
Reduction of Revenue | $ 1.0

X
- 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