Crude Oil Supply and Inventory Purchase Agreement - Recurring Cash Fee Paid (Details) - Interest expense - J. Aron - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Oil and Gas, Delivery Commitment [Line Items]
Recurring cash fees paid	$ 5.0	$ 4.2
El Dorado Refinery
Oil and Gas, Delivery Commitment [Line Items]
Recurring cash fees paid	2.9	2.4
Big Spring refinery
Oil and Gas, Delivery Commitment [Line Items]
Recurring cash fees paid	1.0	0.7
Krotz Spring Refinery
Oil and Gas, Delivery Commitment [Line Items]
Recurring cash fees paid	$ 1.1	$ 1.1