Equity (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Equity (Details) - USD ($) $ in Millions	Mar. 31, 2025	Sep. 30, 2025	Dec. 31, 2024
Schedule of Partners' Capital [Line Items]
Foreign currency translation adjustment	$ (1)	$ (4)
Actuarial gains related to pensions and other postretirement benefits	$ 3	2
Total AOCI included in partners’ capital, net of tax		$ (2)	$ 2
Common Units
Schedule of Partners' Capital [Line Items]
Limited Partners' Capital Account, Units Outstanding		108,140,596
Common Units [Member]
Schedule of Partners' Capital [Line Items]
Limited Partners' Capital Account, Units Outstanding		136,604,563	136,228,535
Class C Units [Member]
Schedule of Partners' Capital [Line Items]
Limited Partners' Capital Account, Units Outstanding		16,410,780	16,410,780
Energy Transfer \| Common Units [Member]
Schedule of Partners' Capital [Line Items]
Limited Partners' Capital Account, Units Outstanding		28,463,967

Amount after tax, before reclassification adjustments of gain (loss) on foreign currency translation adjustments, foreign currency transactions designated and effective as economic hedges of a net investment in a foreign entity and intra-entity foreign currency transactions that are of a long-term-investment nature.