XML 112 R96.htm IDEA: XBRL DOCUMENT
v3.24.0.1

Retirement Plans and Postretirement Benefit Plans - Projected Benefit Obligation Funded Status Thresholds (Details) | 12 Months Ended
--- | ---
Dec. 31, 2023
Less Than 90% [Member] |
Defined Benefit Plan Disclosure [Line Items] |
Projected Benefit Obligation Funded Status Thresholds Fixed Income | 50.00%
Projected Benefit Obligation Funded Status Thresholds Equity | 50.00%
Projected Benefit Obligation Funded Status Thresholds | 100.00%
95% [Member] |
Defined Benefit Plan Disclosure [Line Items] |
Projected Benefit Obligation Funded Status Thresholds Fixed Income | 58.00%
Projected Benefit Obligation Funded Status Thresholds Equity | 42.00%
Projected Benefit Obligation Funded Status Thresholds | 100.00%
100% [Member] |
Defined Benefit Plan Disclosure [Line Items] |
Projected Benefit Obligation Funded Status Thresholds Fixed Income | 65.00%
Projected Benefit Obligation Funded Status Thresholds Equity | 35.00%
Projected Benefit Obligation Funded Status Thresholds | 100.00%
105% [Member] |
Defined Benefit Plan Disclosure [Line Items] |
Projected Benefit Obligation Funded Status Thresholds Fixed Income | 73.00%
Projected Benefit Obligation Funded Status Thresholds Equity | 27.00%
Projected Benefit Obligation Funded Status Thresholds | 100.00%
110% [Member] |
Defined Benefit Plan Disclosure [Line Items] |
Projected Benefit Obligation Funded Status Thresholds Fixed Income | 80.00%
Projected Benefit Obligation Funded Status Thresholds Equity | 20.00%
Projected Benefit Obligation Funded Status Thresholds | 100.00%
115% [Member] |
Defined Benefit Plan Disclosure [Line Items] |
Projected Benefit Obligation Funded Status Thresholds Fixed Income | 85.00%
Projected Benefit Obligation Funded Status Thresholds Equity | 15.00%
Projected Benefit Obligation Funded Status Thresholds | 100.00%
120% [Member] |
Defined Benefit Plan Disclosure [Line Items] |
Projected Benefit Obligation Funded Status Thresholds Fixed Income | 90.00%
Projected Benefit Obligation Funded Status Thresholds Equity | 10.00%
Projected Benefit Obligation Funded Status Thresholds | 100.00%
Domestic All-Cap/Large Cap Equity [Member] |
Defined Benefit Plan Disclosure [Line Items] |
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage | 40.00%
Domestic All-Cap/Large Cap Equity [Member] | Minimum [Member] |
Defined Benefit Plan Disclosure [Line Items] |
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage | 35.00%
Domestic All-Cap/Large Cap Equity [Member] | Maximum [Member] |
Defined Benefit Plan Disclosure [Line Items] |
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage | 60.00%
Domestic Mid-Cap Equity [Member] |
Defined Benefit Plan Disclosure [Line Items] |
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage | 15.00%
Domestic Mid-Cap Equity [Member] | Minimum [Member] |
Defined Benefit Plan Disclosure [Line Items] |
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage | 5.00%
Domestic Mid-Cap Equity [Member] | Maximum [Member] |
Defined Benefit Plan Disclosure [Line Items] |
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage | 25.00%
Domestic Small-Cap Equity [Member] |
Defined Benefit Plan Disclosure [Line Items] |
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage | 25.00%
Domestic Small-Cap Equity [Member] | Minimum [Member] |
Defined Benefit Plan Disclosure [Line Items] |
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage | 5.00%
Domestic Small-Cap Equity [Member] | Maximum [Member] |
Defined Benefit Plan Disclosure [Line Items] |
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage | 30.00%
International Equity [Member] |
Defined Benefit Plan Disclosure [Line Items] |
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage | 20.00%
International Equity [Member] | Minimum [Member] |
Defined Benefit Plan Disclosure [Line Items] |
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage | 10.00%
International Equity [Member] | Maximum [Member] |
Defined Benefit Plan Disclosure [Line Items] |
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage | 30.00%

X
- Definition Projected Benefit Obligation Funded Status Thresholds + References No definition available. + Details
Name: | oge_ProjectedBenefitObligationFundedStatusThresholds
Namespace Prefix: | oge_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Projected Benefit Obligation Funded Status Thresholds Equity + References No definition available. + Details
Name: | oge_ProjectedBenefitObligationFundedStatusThresholdsEquity
Namespace Prefix: | oge_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Projected Benefit Obligation Funded Status Thresholds Fixed Income + References No definition available. + Details
Name: | oge_ProjectedBenefitObligationFundedStatusThresholdsFixedIncome
Namespace Prefix: | oge_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition 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. + References No definition available. + Details
Name: | us-gaap_DefinedBenefitPlanDisclosureLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Percentage of target investment allocation to total plan assets. Includes, but is not limited to, percentage on weighted-average basis if more than one plan. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 17 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480482/715-20-55-17 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (d)(i) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-1 + Details
Name: | us-gaap_DefinedBenefitPlanPlanAssetsTargetAllocationPercentage
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | us-gaap_FairValueByAssetClassAxis=oge_LessThan90Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByAssetClassAxis=oge_A95Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByAssetClassAxis=oge_A100Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByAssetClassAxis=oge_A105Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByAssetClassAxis=oge_A110Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByAssetClassAxis=oge_A115Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByAssetClassAxis=oge_A120Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByAssetClassAxis=oge_DomesticAllCaplargeCapEquityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByAssetClassAxis=oge_DomesticMidCapEquityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByAssetClassAxis=oge_DomesticSmallCapEquityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByAssetClassAxis=oge_InternationalEquityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |