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Inventories Table - Inventory Balances (Details) - USD ($)
$ in Millions
Sep. 30, 2021
Dec. 31, 2020
Inventory [Line Items]    
Natural gas, NGLs and refined products(1) [1] $ 1,238 $ 1,013
Crude oil 160 287
Spare parts and other 413 439
Total inventories $ 1,811 $ 1,739
[1] Due to changes in fuel prices, Sunoco LP recorded an inventory adjustment on the value of its fuel inventory of $168 million for the nine months ended September 30, 2021.