Derivatives - Schedule of Notional Amounts of Outstanding Derivative Positions (Details) bbl in Thousands	9 Months Ended
	Sep. 30, 2021 bbl
Credit Derivatives [Line Items]
Derivative contracts, barrels	(1,150)
Purchases
Credit Derivatives [Line Items]
Derivative contracts, barrels	(2,917)
Sales
Credit Derivatives [Line Items]
Derivative contracts, barrels	(4,067)
Futures
Credit Derivatives [Line Items]
Derivative contracts, barrels	(150)
Futures | Purchases
Credit Derivatives [Line Items]
Derivative contracts, barrels	(192)
Futures | Sales
Credit Derivatives [Line Items]
Derivative contracts, barrels	(342)
Swaps
Credit Derivatives [Line Items]
Derivative contracts, barrels	(1,000)
Swaps | Purchases
Credit Derivatives [Line Items]
Derivative contracts, barrels	(2,725)
Swaps | Sales
Credit Derivatives [Line Items]
Derivative contracts, barrels	(3,725)