XML 102 R55.htm IDEA: XBRL DOCUMENT v3.20.1
Crude Oil Supply and Inventory Purchase Agreement (Details) - J. Aron - Baseline Step-Out Liability - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Oil and Gas, Delivery Commitment [Line Items]    
Gain (loss) on change in fair value resulting from modification of instruments $ (1.5)  
Alon Refinery [Member]    
Oil and Gas, Delivery Commitment [Line Items]    
Gain (loss) on change in fair value resulting from modification of instruments   $ 7.6