XML 49 R36.htm IDEA: XBRL DOCUMENT
v3.24.2.u1

RISK-MANAGEMENT AND HEDGING ACTIVITIES USING DERIVATIVES - Notional Quantities for Derivative Instruments (Details) - Futures and swaps | 6 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2024 GWh Bcf MMBbls | Dec. 31, 2023 GWh MMBbls Bcf
Derivatives designated as hedging instruments | - Natural gas (Bcf) | Fixed price | Sold / Receiver |  |
Derivative [Line Items] |  |
Derivative, nonmonetary notional amount, volume | Bcf | 25.3 | 16.0
Derivatives designated as hedging instruments | - Natural gas (Bcf) | Basis | Sold / Receiver |  |
Derivative [Line Items] |  |
Derivative, nonmonetary notional amount, volume | Bcf | 24.2 | 16.0
Derivatives designated as hedging instruments | - NGLs, Refined Products and crude oil (MMBbl) | Fixed price | Sold / Receiver |  |
Derivative [Line Items] |  |
Derivative, nonmonetary notional amount, volume | MMBbls | 11.1 | 14.5
Derivatives designated as hedging instruments | - Power (GWh) | Fixed price | Net Purchased / Payor |  |
Derivative [Line Items] |  |
Derivative, nonmonetary notional amount, energy measure | GWh | 66,200 | 22,100,000
Derivatives not designated as hedging instruments | - Natural gas (Bcf) | Fixed price | Sold / Receiver |  |
Derivative [Line Items] |  |
Derivative, nonmonetary notional amount, volume | Bcf | 0 | 0.7
Derivatives not designated as hedging instruments | - Natural gas (Bcf) | Basis | Sold / Receiver |  |
Derivative [Line Items] |  |
Derivative, nonmonetary notional amount, volume | Bcf | 0 | 0.7
Derivatives not designated as hedging instruments | - NGLs, Refined Products and crude oil (MMBbl) | Fixed price | Sold / Receiver |  |
Derivative [Line Items] |  |
Derivative, nonmonetary notional amount, volume | MMBbls | 1.0 |
Derivatives not designated as hedging instruments | - NGLs, Refined Products and crude oil (MMBbl) | Fixed price | Net Purchased / Payor |  |
Derivative [Line Items] |  |
Derivative, nonmonetary notional amount, volume | MMBbls |  | 0.1
Derivatives not designated as hedging instruments | - NGLs, Refined Products and crude oil (MMBbl) | Basis | Sold / Receiver |  |
Derivative [Line Items] |  |
Derivative, nonmonetary notional amount, volume | MMBbls | 0 | 0.1

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 Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 815 -SubTopic 40 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Subparagraph (f) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480237/815-40-50-5 + Details
Name: | us-gaap_DerivativeLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Nominal energy measure used to calculate payments on a derivative instrument. + References No definition available. + Details
Name: | us-gaap_DerivativeNonmonetaryNotionalAmountEnergyMeasure
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:energyItemType
Balance Type: | na
Period Type: | duration

X
- Definition Nominal volume used to calculate payments on a derivative instrument. + References No definition available. + Details
Name: | us-gaap_DerivativeNonmonetaryNotionalAmountVolume
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:volumeItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_HedgingDesignationAxis=us-gaap_DesignatedAsHedgingInstrumentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=oke_FuturesAndSwapsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | oke_DerivativesByCommodityAxis=srt_NaturalGasReservesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | oke_DerivativeInstrumentByMethodForSettingNotionalAmountAxis=oke_FixedPriceMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | oke_DerivativePositonByTransactionTypeAxis=oke_SellorMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | oke_DerivativeInstrumentByMethodForSettingNotionalAmountAxis=oke_BasisMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | oke_DerivativesByCommodityAxis=srt_CrudeOilAndNGLPerBarrelMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | oke_DerivativesByCommodityAxis=oke_PowerGWsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | oke_DerivativePositonByTransactionTypeAxis=oke_PurchasorMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_HedgingDesignationAxis=us-gaap_NondesignatedMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |