XML 56 R47.htm IDEA: XBRL DOCUMENT
v3.10.0.1

Income Taxes (Details) - USD ($) $ in Millions | 9 Months Ended |
--- | --- | ---
Sep. 30, 2018 | Dec. 31, 2017
Non-Current Regulatory Liabilities | $ 1,291.0 | $ 1,283.4
Interim Rate Revenue Reserved | 22.8 |
Income taxes recoverable from customers, net [Member] |  |
Non-Current Regulatory Liabilities | $ 1,028.0 |

X
- Definition Interim Rate Revenue Reserved + References No definition available. + Details
Name: | oge_InterimRateRevenueReserved
Namespace Prefix: | oge_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The amount for the individual regulatory noncurrent liability as itemized in a table of regulatory noncurrent liabilities as of the end of the period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.24) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_RegulatoryLiabilityNoncurrent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
Name: | us-gaap_RegulatoryLiabilityAxis=oge_IncometaxesrefundabletocustomersnetMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |