Unit-Based Compensation - Schedule of Unit Grants Outstanding (Details) - Phantom Share Units (PSUs) [Member]	12 Months Ended
	Dec. 31, 2025 $ / shares shares
Number of Phantom Common Units
Beginning balance (in units) | shares	1,542,700
Units granted (in units) | shares	730,078
Units vested (in units) | shares	442,386
Units forfeited (in units) | shares	59,020
Ending balance (in units) | shares	1,771,372
Weighted-Average Grant Date Fair Value
Beginning balance (in dollars per unit)	$ 46.83
Units granted (in dollars per unit)	54.79
Units vested (in dollars per unit)	36.60
Units forfeited (in dollars per unit)	48.22
Ending balance (in dollars per unit)	$ 52.49
SunocoCorp
Number of Phantom Common Units
Beginning balance (in units) | shares	0
Units vested (in units) | shares	0
Units forfeited (in units) | shares	0
Ending balance (in units) | shares	183,813
Weighted-Average Grant Date Fair Value
Beginning balance (in dollars per unit)	$ 0
Units granted (in dollars per unit)	51.24
Units vested (in dollars per unit)	0
Units forfeited (in dollars per unit)	0
Ending balance (in dollars per unit)	$ 51.24