Inventories Inventories (Policies)	9 Months Ended
Inventories Inventories (Policies)	Sep. 30, 2024
Inventory Disclosure [Abstract]
Inventory, Policy [Policy Text Block]	Sunoco LP’s fuel inventories are stated at the lower of cost or market using the last-in, first-out (“LIFO”) method. As of September 30, 2024 and December 31, 2023, the carrying value of Sunoco LP’s fuel inventory included lower of cost or market reserves of $329 million and $230 million, respectively. For the three and nine months ended September 30, 2024 and 2023, the Partnership’s consolidated income statements did not include any material amounts of income from the liquidation of Sunoco LP’s LIFO fuel inventory. For the three months ended September 30, 2024 and 2023, the Partnership’s cost of products sold included unfavorable inventory valuation adjustments of $197 million and favorable inventory adjustments of $141 million, respectively, related to Sunoco LP’s LIFO inventory. For the nine months ended September 30, 2024 and 2023, the Partnership’s cost of products sold included unfavorable inventory adjustments of $99 million and favorable inventory adjustments of $113 million, respectively, related to Sunoco LP’s LIFO inventory.

Disclosure of inventory accounting policy for inventory classes, including, but not limited to, basis for determining inventory amounts, methods by which amounts are added and removed from inventory classes, loss recognition on impairment of inventories, and situations in which inventories are stated above cost.