XML 61 R51.htm IDEA: XBRL DOCUMENT v3.20.2
Inventory Financing Agreement Inventory Financing Agreement - Narrative (Details)
$ in Millions
3 Months Ended 6 Months Ended
May 09, 2019
Jun. 30, 2020
USD ($)
Jun. 30, 2019
USD ($)
Jun. 30, 2020
USD ($)
Jun. 30, 2019
USD ($)
Dec. 31, 2019
USD ($)
Jun. 19, 2017
D / bbl
Mar. 31, 2017
D / bbl
Oil and Gas, Delivery Commitment [Line Items]                
Financing costs   $ 30.6 $ 33.1 $ 59.9 $ 65.4      
Obligations under inventory financing agreements   80.1   $ 80.1   $ 134.3    
Inventory Financing Obligations | London Interbank Offered Rate (LIBOR)                
Oil and Gas, Delivery Commitment [Line Items]                
Debt Instrument, Basis Spread on Variable Rate       3.25%        
Inventory Financing Obligations                
Oil and Gas, Delivery Commitment [Line Items]                
Interest Income, Other   (1.4)   $ (3.2)        
Financing costs     $ 4.3   $ 6.1      
Deferred payment arrangement, maximum percentage of eligible inventory       90.00%        
Deferred payment arrangement, outstanding amount   11.0   $ 11.0   $ 26.3    
Obligations under inventory financing agreements   5.0   5.0        
Inventory Financing Obligations | Macquarie                
Oil and Gas, Delivery Commitment [Line Items]                
Amount retained from initial inventory purchase to cover credit and liquidation risks   $ 8.4   $ 8.4        
Great Falls, MT [Member]                
Oil and Gas, Delivery Commitment [Line Items]                
Inventory Financing Agreement Extension Jun. 30, 2023              
Great Falls, MT [Member] | Inventory Financing Obligations                
Oil and Gas, Delivery Commitment [Line Items]                
Barrels of crude oil per day provided by Macquarie (in barrels per day) | D / bbl               30,000
shreveport [Member]                
Oil and Gas, Delivery Commitment [Line Items]                
Inventory Financing Agreement Extension Jun. 30, 2023              
shreveport [Member] | Inventory Financing Obligations                
Oil and Gas, Delivery Commitment [Line Items]                
Barrels of crude oil per day provided by Macquarie (in barrels per day) | D / bbl             60,000