Derivatives - Schedule of Derivative Instruments (Not Designated as Hedges) (Details) - Not Designated as Hedging Instrument [Member] - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Realized Gain (Loss)
Derivative Instruments, Gain (Loss) [Line Items]
Derivative instruments not designated as hedging instruments, gain (loss)	$ 6.9	$ 11.7
Unrealized Gain (Loss)
Derivative Instruments, Gain (Loss) [Line Items]
Derivative instruments not designated as hedging instruments, gain (loss)	31.6	(2.6)
Natural Gas Swaps [Member] | Specialty Product [Member] | Realized Gain (Loss)
Derivative Instruments, Gain (Loss) [Line Items]
Derivative instruments not designated as hedging instruments, gain (loss)	(0.1)	0.0
Natural Gas Swaps [Member] | Specialty Product [Member] | Unrealized Gain (Loss)
Derivative Instruments, Gain (Loss) [Line Items]
Derivative instruments not designated as hedging instruments, gain (loss)	(0.3)	0.0
WCS crude oil basis swaps | Fuel Product [Member] | Realized Gain (Loss)
Derivative Instruments, Gain (Loss) [Line Items]
Derivative instruments not designated as hedging instruments, gain (loss)	0.0	3.6
WCS crude oil basis swaps | Fuel Product [Member] | Unrealized Gain (Loss)
Derivative Instruments, Gain (Loss) [Line Items]
Derivative instruments not designated as hedging instruments, gain (loss)	(6.2)	(3.5)
WCS crude oil percentage basis swap | Fuel Product [Member] | Realized Gain (Loss)
Derivative Instruments, Gain (Loss) [Line Items]
Derivative instruments not designated as hedging instruments, gain (loss)	0.0	0.1
WCS crude oil percentage basis swap | Fuel Product [Member] | Unrealized Gain (Loss)
Derivative Instruments, Gain (Loss) [Line Items]
Derivative instruments not designated as hedging instruments, gain (loss)	0.0	7.2
Midland crude oil basis swap purchases [Member] | Specialty Product [Member] | Realized Gain (Loss)
Derivative Instruments, Gain (Loss) [Line Items]
Derivative instruments not designated as hedging instruments, gain (loss)	0.0	1.1
Midland crude oil basis swap purchases [Member] | Specialty Product [Member] | Unrealized Gain (Loss)
Derivative Instruments, Gain (Loss) [Line Items]
Derivative instruments not designated as hedging instruments, gain (loss)	0.0	(0.5)
Midland crude oil basis swap purchases [Member] | Fuel Product [Member] | Realized Gain (Loss)
Derivative Instruments, Gain (Loss) [Line Items]
Derivative instruments not designated as hedging instruments, gain (loss)	0.0	7.3
Midland crude oil basis swap purchases [Member] | Fuel Product [Member] | Unrealized Gain (Loss)
Derivative Instruments, Gain (Loss) [Line Items]
Derivative instruments not designated as hedging instruments, gain (loss)	0.0	(2.1)
Gasoline Crack Spread Swaps | Fuel Product [Member] | Realized Gain (Loss)
Derivative Instruments, Gain (Loss) [Line Items]
Derivative instruments not designated as hedging instruments, gain (loss)	2.1	0.0
Gasoline Crack Spread Swaps | Fuel Product [Member] | Unrealized Gain (Loss)
Derivative Instruments, Gain (Loss) [Line Items]
Derivative instruments not designated as hedging instruments, gain (loss)	16.8	0.0
2-1-1- Crack Spread Swap | Fuel Product [Member] | Realized Gain (Loss)
Derivative Instruments, Gain (Loss) [Line Items]
Derivative instruments not designated as hedging instruments, gain (loss)	1.8	0.0
2-1-1- Crack Spread Swap | Fuel Product [Member] | Unrealized Gain (Loss)
Derivative Instruments, Gain (Loss) [Line Items]
Derivative instruments not designated as hedging instruments, gain (loss)	(0.1)	0.0
Diesel crack spread swaps | Fuel Product [Member] | Realized Gain (Loss)
Derivative Instruments, Gain (Loss) [Line Items]
Derivative instruments not designated as hedging instruments, gain (loss)	3.1	0.7
Diesel crack spread swaps | Fuel Product [Member] | Unrealized Gain (Loss)
Derivative Instruments, Gain (Loss) [Line Items]
Derivative instruments not designated as hedging instruments, gain (loss)	10.4	(0.8)
Diesel percentage basis crack spread swaps | Fuel Product [Member] | Realized Gain (Loss)
Derivative Instruments, Gain (Loss) [Line Items]
Derivative instruments not designated as hedging instruments, gain (loss)	0.0	(1.1)
Diesel percentage basis crack spread swaps | Fuel Product [Member] | Unrealized Gain (Loss)
Derivative Instruments, Gain (Loss) [Line Items]
Derivative instruments not designated as hedging instruments, gain (loss)	0.0	9.8
Inventory Financing Obligations | Fuel Product [Member] | Realized Gain (Loss)
Derivative Instruments, Gain (Loss) [Line Items]
Derivative instruments not designated as hedging instruments, gain (loss)	0.0	0.0
Inventory Financing Obligations | Fuel Product [Member] | Unrealized Gain (Loss)
Derivative Instruments, Gain (Loss) [Line Items]
Derivative instruments not designated as hedging instruments, gain (loss)	$ 11.0	$ (12.7)