Inventory (Policies)	9 Months Ended
Inventory (Policies)	Sep. 30, 2026
Inventory Disclosure [Abstract]
Inventory, Policy	Fuel inventories included balances stated at the lower of cost or market using the LIFO method, except for certain fuel inventories in the Caribbean, as discussed below. As of September 30, 2026 and December 31, 2025, the Partnership’s fuel inventory balance included lower of cost or market reserves of nil and $472 million, respectively. At September 30, 2026, the replacement cost of our fuel inventories accounted for using the LIFO method exceeded the carrying value by approximately $395 million. For the three months ended September 30, 2026 and 2025, the Partnership's cost of sales included favorable inventory valuation adjustments of $19 million and $10 million, respectively, which increased net income. For the nine months ended September 30, 2026 and 2025, the Partnership’s cost of sales included favorable inventory valuation adjustments of $445 million and $31 million, respectively, which increased net income.

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.