Duration of waiting period before business interruption coverage begins

No definition available.

Name:	oke_DurationOfWaitingPeriodBeforeBusinessInterruptionCoverageBegins
Namespace Prefix:	oke_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Insurance deductibles

+ References

No definition available.

+ Details

Name:	oke_InsuranceDeductibles
Namespace Prefix:	oke_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Insurance Proceeds

+ References

No definition available.

+ Details

Name:	oke_InsuranceProceeds
Namespace Prefix:	oke_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Insurance Proceeds 2023

+ References

No definition available.

+ Details

Name:	oke_InsuranceProceeds2023
Namespace Prefix:	oke_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Maximum insurance recoverable amount

+ References

No definition available.

+ Details

Name:	oke_MaximumInsuranceRecoverableAmount
Namespace Prefix:	oke_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Outstanding insurance receivable

+ References

No definition available.

+ Details

Name:	oke_OutstandingInsuranceReceivable
Namespace Prefix:	oke_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount of gain (loss) from the disposal of an asset through means other than sale, for example, but not limited to, abandonment, spin-off, and expropriation.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 45
-Paragraph 15
-URI https://asc.fasb.org/extlink&oid=126905981&loc=d3e2611-110228

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 40
-Paragraph 4
-URI https://asc.fasb.org/extlink&oid=126905928&loc=d3e2212-110226

+ Details

Name:	us-gaap_AssetsDisposedOfByMethodOtherThanSaleInPeriodOfDispositionGainLossOnDisposition1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

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

- Definition

The net amount (to the extent disclosed within this portion of the income statement) by which an insurance settlement exceeds incremental costs incurred from the event causing an interruption of business, plus the insurance award for earnings lost from the event, such as a natural catastrophe, explosion or fire.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 30
-Section 50
-Paragraph 1
-Subparagraph (b)
-URI https://asc.fasb.org/extlink&oid=114868897&loc=SL114872001-224240

+ Details

Name:	us-gaap_GainOnBusinessInterruptionInsuranceRecovery
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Amount of receivable related to a loss contingency accrual. For example, an insurance recovery receivable.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 460
-SubTopic 10
-Section 50
-Paragraph 3
-URI https://asc.fasb.org/extlink&oid=124440162&loc=d3e12053-110248

+ Details

Name:	us-gaap_LossContingencyReceivable
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount of insurance proceeds for an event or transaction that is unusual in nature or infrequent in occurrence, or both.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 20
-Section 50
-Paragraph 1
-URI https://asc.fasb.org/extlink&oid=114868883&loc=SL114871943-224233

+ Details

Name:	us-gaap_UnusualOrInfrequentItemInsuranceProceeds
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Details

Name:	oke_NaturalGasLiquidsAxis=oke_MedfordIncidentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	oke_MedfordIncidentAxis=oke_PropertyDamageAndBusinessInterruption
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	oke_MedfordIncidentAxis=oke_PropertyDamageMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	oke_MedfordIncidentAxis=oke_BusinessInterruptionMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	oke_MedfordIncidentAxis=oke_TotalReceivables2022Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	oke_MedfordIncidentAxis=oke_InsuranceRecoveriesIn2022Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	oke_MedfordIncidentAxis=oke_IncurredCostsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	oke_MedfordIncidentAxis=oke_BusinessInterruptionThirdPartyFractionationCostsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	oke_MedfordIncidentAxis=oke_InsuranceRecoveriesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	oke_MedfordIncidentAxis=oke_BusinessInterruptionSettlementProceedsReceivedIn2023Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	oke_MedfordIncidentAxis=oke_BusinessInterruptionSettlementProceedsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

MEDFORD INCIDENT (Details) - Medford Incident - USD ($) $ in Millions	3 Months Ended		12 Months Ended
	Mar. 31, 2023	Dec. 31, 2022	Dec. 31, 2022
Property Damage and Business Interruption
Business Interruption Loss [Line Items]
Maximum insurance recoverable amount		$ 2,000.0	$ 2,000.0
Property damage
Business Interruption Loss [Line Items]
Insurance deductibles		5.0	5.0
Assets Disposed of by Method Other than Sale, in Period of Disposition, Gain (Loss) on Disposition			$ (45.6)
Business Interruption
Business Interruption Loss [Line Items]
Duration of waiting period before business interruption coverage begins			45 days
Total Receivables 2022
Business Interruption Loss [Line Items]
Loss Contingency, Insurance Receivable		150.7	$ 150.7
Insurance Recoveries in 2022
Business Interruption Loss [Line Items]
Unusual or Infrequent Item, or Both, Insurance Proceeds		100.0
Incurred Costs
Business Interruption Loss [Line Items]
Loss Contingency, Insurance Receivable		9.0	9.0
Business Interruption- Third Party Fractionation Costs
Business Interruption Loss [Line Items]
Loss Contingency, Insurance Receivable		96.1	96.1
Insurance Recoveries \| Subsequent Event [Member]
Business Interruption Loss [Line Items]
Insurance Proceeds	$ 930.0
Business Interruption - Settlement Proceeds Received in 2023 \| Subsequent Event [Member]
Business Interruption Loss [Line Items]
Insurance Proceeds 2023	830.0
Business Interruption- Settlement Proceeds
Business Interruption Loss [Line Items]
Outstanding insurance receivable		$ 50.7	$ 50.7
Business Interruption- Settlement Proceeds \| Subsequent Event [Member]
Business Interruption Loss [Line Items]
Gain on Business Interruption Insurance Recovery	$ 779.3