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Inventories Inventories (Policies)
3 Months Ended
Mar. 31, 2023
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 March 31, 2023 and December 31, 2022, the carrying value of Sunoco LP’s fuel inventory included lower of cost or market reserves of $87 million and $116 million, respectively. For the three months ended March 31, 2023 and 2022, 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 March 31, 2023 and 2022, the Partnership’s cost of products sold included favorable inventory adjustments of $29 million and $120 million, respectively, related to Sunoco LP’s LIFO inventory.