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Divestitures (Details) - USD ($) $ in Millions		9 Months Ended
	Aug. 01, 2024	Sep. 30, 2025	Sep. 30, 2024
Business Combination [Line Items]
Proceeds from dispositions of equity-method investments (Note 3)		$ 0	$ 161
Equity Method Investment, Realized Gain (Loss) on Disposal		$ 0	$ 149
Northeast G & P [Member] | Aux Sable Liquid Products Inc And Aux Sable Liquid Products LP And Aux Sable Midstream LLC
Business Combination [Line Items]
Proceeds from dispositions of equity-method investments (Note 3)	$ 161
Equity Method Investment, Realized Gain (Loss) on Disposal	$ 149

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