Hedging Activities and Fair Value Measurements - Schedule of Hedging Instruments Under the FASB's Derivative and Hedging Guidance (Details)	6 Months Ended
	Jun. 30, 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	36.5
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	18.4
Derivatives designated as hedging instruments: | Forecasted sales of NGLs (MMBbls) | Cash flow hedge | Current
Derivative [Line Items]
Derivative, nonmonetary notional amount, volume	4.6
Derivatives designated as hedging instruments: | Forecasted sales of NGLs (MMBbls) | Cash flow hedge | Long-Term
Derivative [Line Items]
Derivative, nonmonetary notional amount, volume	0.4
Derivatives designated as hedging instruments: | Forecasted sales of octane enhancement products (MMBbls) | Cash flow hedge | Current
Derivative [Line Items]
Derivative, nonmonetary notional amount, volume	2.5
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	0.1
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	2.0
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	216.3
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	17.4
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	214.2
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	19.0
Derivatives designated as hedging instruments: | Forecasted purchases of refined products (MMBbls) | Cash flow hedge | Current
Derivative [Line Items]
Derivative, nonmonetary notional amount, volume	3.4
Derivatives designated as hedging instruments: | Forecasted sales of refined products (MMBbls) | Cash flow hedge | Current
Derivative [Line Items]
Derivative, nonmonetary notional amount, volume	3.6
Derivatives designated as hedging instruments: | Forecasted purchases of crude oil (MMBbls) | Cash flow hedge | Current
Derivative [Line Items]
Derivative, nonmonetary notional amount, volume	16.6
Derivatives designated as hedging instruments: | Forecasted purchases of crude oil (MMBbls) | Cash flow hedge | Long-Term
Derivative [Line Items]
Derivative, nonmonetary notional amount, volume	7.2
Derivatives designated as hedging instruments: | Forecasted sales of crude oil (MMBbls) | Cash flow hedge | Current
Derivative [Line Items]
Derivative, nonmonetary notional amount, volume	23.2
Derivatives designated as hedging instruments: | Forecasted sales of crude oil (MMBbls) | Cash flow hedge | Long-Term
Derivative [Line Items]
Derivative, nonmonetary notional amount, volume	14.3
Derivatives designated as hedging instruments: | Forecasted sales of petrochemical products (MMBbls) | Cash flow hedge | Current
Derivative [Line Items]
Derivative, nonmonetary notional amount, volume	0.1
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	1.2
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	0.7
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	64.9
Derivatives not designated as hedging instruments: | NGL risk management activities (MMBbls) | Mark-to-market | Current
Derivative [Line Items]
Derivative, nonmonetary notional amount, volume	22.4
Derivatives not designated as hedging instruments: | NGL risk management activities (MMBbls) | Mark-to-market | Long-Term
Derivative [Line Items]
Derivative, nonmonetary notional amount, volume	11.6
Derivatives not designated as hedging instruments: | Refined products risk management activities (MMBbls) | Mark-to-market | Current
Derivative [Line Items]
Derivative, nonmonetary notional amount, volume	3.5
Derivatives not designated as hedging instruments: | Crude oil risk management activities (MMBbls) | Mark-to-market | Current
Derivative [Line Items]
Derivative, nonmonetary notional amount, volume	90.9
Derivatives not designated as hedging instruments: | Crude oil risk management activities (MMBbls) | Mark-to-market | Long-Term
Derivative [Line Items]
Derivative, nonmonetary notional amount, volume	0.5
Derivatives not designated as hedging instruments: | Petrochemical risk management activities (MMBbls) | Mark-to-market | Current
Derivative [Line Items]
Derivative, nonmonetary notional amount, volume	0.3
Derivatives not designated as hedging instruments: | Commercial energy risk management activities (TWh) | Mark-to-market | Long-Term
Derivative [Line Items]
Volume | TWh	0.1