XML 66 R49.htm IDEA: XBRL DOCUMENT
v3.25.0.1

Summary of Significant Accounting Policies - Summary of Components of Benefit Obligation (Details) - USD ($) $ in Millions | Dec. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Regulatory Asset, Noncurrent | $ 568.1 | $ 577.6
Pension Plan [Member] | Defined Benefit Plans Income Loss [Member] |  |
Components of Benefit Obligation Regulatory Asset | 76.5 | 75.9
Other Postretirement Benefits Plan [Member] | Defined Benefit Plans Income Loss [Member] |  |
Components of Benefit Obligation Regulatory Asset | 14.3 | 13.5
Benefit obligations regulatory asset [Member] |  |
Regulatory Asset, Noncurrent | $ 90.8 | $ 89.4

X
- Definition Components of Benefit Obligation Regulatory Asset + References No definition available. + Details
Name: | oge_ComponentsOfBenefitObligationRegulatoryAsset
Namespace Prefix: | oge_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Carrying amount as of the balance sheet date of capitalized costs of regulated entities that are not expected to be recovered through revenue sources within one year or the normal operating cycle if longer. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 980 -SubTopic 340 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147478742/980-340-50-1 + Details
Name: | us-gaap_RegulatoryAssetsNoncurrent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | us-gaap_RetirementPlanTypeAxis=us-gaap_PensionPlansDefinedBenefitMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | oge_ComponentsOfBenefitObligationRegulatoryAssetAxis=oge_DefinedBenefitPlansIncomeLossMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RetirementPlanTypeAxis=us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RegulatoryAssetAxis=oge_BenefitObligationsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |