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Hedging Activities and Fair Value Measurements - Schedule of Hedging Instruments Under the FASB's Derivative and Hedging Guidance (Details)	12 Months Ended
	Dec. 31, 2025 TWh MMBbls Bcf
Derivatives designated as hedging instruments: | Forecasted sales of natural gas (Bcf) | Cash flow hedge | Current
Derivative [Line Items]
Derivative, nonmonetary notional amount, volume | Bcf	45.3
Derivatives designated as hedging instruments: | Forecasted sales of natural gas (Bcf) | Cash flow hedge | Long-Term
Derivative [Line Items]
Derivative, nonmonetary notional amount, volume | Bcf	18.0
Derivatives designated as hedging instruments: | Forecasted sales of NGLs (MMBbls) | Cash flow hedge | Current
Derivative [Line Items]
Derivative, nonmonetary notional amount, volume	0.9
Derivatives designated as hedging instruments: | Forecasted sales of octane enhancement products (MMBbls) | Cash flow hedge | Current
Derivative [Line Items]
Derivative, nonmonetary notional amount, volume	2.3
Derivatives designated as hedging instruments: | Forecasted sales of octane enhancement products (MMBbls) | Cash flow hedge | Long-Term
Derivative [Line Items]
Derivative, nonmonetary notional amount, volume	0.2
Derivatives designated as hedging instruments: | Natural gas storage inventory management activities (Bcf) | Fair value hedge | Current
Derivative [Line Items]
Derivative, nonmonetary notional amount, volume | Bcf	1.8
Derivatives designated as hedging instruments: | Forecasted purchases of NGLs and related hydrocarbon products (MMBbls) | Cash flow hedge | Current
Derivative [Line Items]
Derivative, nonmonetary notional amount, volume	208.3
Derivatives designated as hedging instruments: | Forecasted purchases of NGLs and related hydrocarbon products (MMBbls) | Cash flow hedge | Long-Term
Derivative [Line Items]
Derivative, nonmonetary notional amount, volume	16.9
Derivatives designated as hedging instruments: | Forecasted sales of NGLs and related hydrocarbon products (MMBbls) | Cash flow hedge | Current
Derivative [Line Items]
Derivative, nonmonetary notional amount, volume	212.9
Derivatives designated as hedging instruments: | Forecasted sales of NGLs and related hydrocarbon products (MMBbls) | Cash flow hedge | Long-Term
Derivative [Line Items]
Derivative, nonmonetary notional amount, volume	27.0
Derivatives designated as hedging instruments: | Forecasted purchases of refined products (MMBbls) | Cash flow hedge | Current
Derivative [Line Items]
Derivative, nonmonetary notional amount, volume	3.0
Derivatives designated as hedging instruments: | Forecasted sales of refined products (MMBbls) | Cash flow hedge | Current
Derivative [Line Items]
Derivative, nonmonetary notional amount, volume	6.1
Derivatives designated as hedging instruments: | Forecasted sales of refined products (MMBbls) | Cash flow hedge | Long-Term
Derivative [Line Items]
Derivative, nonmonetary notional amount, volume	0.1
Derivatives designated as hedging instruments: | Forecasted purchases of crude oil (MMBbls) | Cash flow hedge | Current
Derivative [Line Items]
Derivative, nonmonetary notional amount, volume	19.5
Derivatives designated as hedging instruments: | Forecasted purchases of crude oil (MMBbls) | Cash flow hedge | Long-Term
Derivative [Line Items]
Derivative, nonmonetary notional amount, volume	7.3
Derivatives designated as hedging instruments: | Forecasted sales of crude oil (MMBbls) | Cash flow hedge | Current
Derivative [Line Items]
Derivative, nonmonetary notional amount, volume	28.1
Derivatives designated as hedging instruments: | Forecasted sales of crude oil (MMBbls) | Cash flow hedge | Long-Term
Derivative [Line Items]
Derivative, nonmonetary notional amount, volume	14.1
Derivatives designated as hedging instruments: | Forecasted sales of petrochemical products (MMBbls) | Cash flow hedge | Current
Derivative [Line Items]
Derivative, nonmonetary notional amount, volume	0.3
Derivatives designated as hedging instruments: | Forecasted purchases of power related to asset operations (terawatt hours (“TWh”)) | Cash flow hedge | Current
Derivative [Line Items]
Volume | TWh	1.0
Derivatives designated as hedging instruments: | Forecasted purchases of power related to asset operations (terawatt hours (“TWh”)) | Cash flow hedge | Long-Term
Derivative [Line Items]
Volume | TWh	0.3
Derivatives not designated as hedging instruments: | Natural gas risk management activities (Bcf) | Mark-to-market | Current
Derivative [Line Items]
Derivative, nonmonetary notional amount, volume | Bcf	39.4
Derivatives not designated as hedging instruments: | NGL risk management activities (MMBbls) | Mark-to-market | Current
Derivative [Line Items]
Derivative, nonmonetary notional amount, volume	58.3
Derivatives not designated as hedging instruments: | NGL risk management activities (MMBbls) | Mark-to-market | Long-Term
Derivative [Line Items]
Derivative, nonmonetary notional amount, volume	6.4
Derivatives not designated as hedging instruments: | Refined products risk management activities (MMBbls) | Mark-to-market | Current
Derivative [Line Items]
Derivative, nonmonetary notional amount, volume	7.8
Derivatives not designated as hedging instruments: | Crude oil risk management activities (MMBbls) | Mark-to-market | Current
Derivative [Line Items]
Derivative, nonmonetary notional amount, volume	4.6

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/2009/role/commonPracticeRef
-Topic 815
-SubTopic 20
-Name Accounting Standards Codification
-Section 25
-Paragraph 6A
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480682/815-20-25-6A

Reference 2: 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

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+ References

No definition available.

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- Definition

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+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 815
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 181
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480401/815-10-55-181

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