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Investments, Loans and Long-Term Receivables - Dakota Access, LLC and Energy Transfer Crude Oil, Company, LLC (ETCO) (Details) $ in Millions		1 Months Ended		3 Months Ended
	Apr. 01, 2024 USD ($)	Oct. 31, 2024 state	Mar. 31, 2024 USD ($)	Mar. 31, 2025 USD ($)	Mar. 31, 2024 USD ($)
Dakota Access and ETCO
Schedule of Equity Method Investments [Line Items]
Repayments of debt			$ 250
Percentage of ownership interest	25.00%			25.00%
Capital contribution			$ 171
Deferred distributions					$ 79
Maximum exposure, undiscounted				$ 215
Equity investments				875
Dakota Access, LLC
Schedule of Equity Method Investments [Line Items]
Number of states \| state		13
Scheduled interest payments annually				10
Dakota Access, LLC \| Senior Notes
Schedule of Equity Method Investments [Line Items]
Debt issued and guaranteed				$ 850
Dakota Access, LLC \| Senior Notes \| Dakota Senior Notes
Schedule of Equity Method Investments [Line Items]
Repayments of debt	$ 1,000