Name:	oge_AdvancesToParent
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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Intercomany Borrowings, Maximum Borrowing Capacity

No definition available.

Name:	oge_IntercomanyBorrowingsMaximumBorrowingCapacity
Namespace Prefix:	oge_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Intercompany Borrowing Agreement, Expiration Date

No definition available.

Name:	oge_IntercompanyBorrowingAgreementExpirationDate
Namespace Prefix:	oge_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

Outstanding Intercompany Borrowings

No definition available.

Name:	oge_OutstandingIntercompanyBorrowings
Namespace Prefix:	oge_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Period For Which Regulatory Approval Has Been Given to Acquire Short Term Debt

No definition available.

Name:	oge_PeriodForWhichRegulatoryApprovalHasBeenGivenToAcquireShortTermDebt
Namespace Prefix:	oge_
Data Type:	us-types:durationStringItemType
Balance Type:	na
Period Type:	duration

Short Term Borrowing Capacity That Has Regulatory Approval

No definition available.

Name:	oge_ShortTermBorrowingCapacityThatHasRegulatoryApproval
Namespace Prefix:	oge_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
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Carrying value as of the balance sheet date of short-term borrowings using unsecured obligations issued by banks, corporations and other borrowers to investors. The maturities of these money market securities generally do not exceed 270 days.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(19)(a)(3))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(16))
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(13)(2))
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

Name:	us-gaap_CommercialPaper
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Period Type:	instant

The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

No definition available.

Name:	us-gaap_LettersOfCreditOutstandingAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
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Period Type:	instant

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

Name:	us-gaap_ShortTermDebtLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

Weighted average interest rate of short-term debt outstanding calculated at point in time.