Derivative Instruments And Hedging Activities Notional Contracts by Derivative Type (Details)	6 Months Ended
	Jun. 30, 2020 USD ($) MMBTU bbl XPT ( )
Platinum, Ounces
Economic hedges by derivative type [Line Items]
Derivative forward contract - platinum |	40,867
Maturing in Year Two [Member] | Platinum, Ounces
Economic hedges by derivative type [Line Items]
Derivative forward contract - platinum |	40,867
Designated as Hedging Instrument [Member] | Natural Gas [Member]
Economic hedges by derivative type [Line Items]
Derivative, Nonmonetary Notional Amount, Energy Measure | MMBTU	2,700,000
Designated as Hedging Instrument [Member] | Price Risk Derivative [Member]
Economic hedges by derivative type [Line Items]
Price Risk Fair Value Hedge Derivative, at Fair Value, Net	2,392,000
Designated as Hedging Instrument [Member] | Natural Gas Liquids [Member]
Economic hedges by derivative type [Line Items]
Price Risk Fair Value Hedge Derivative, at Fair Value, Net	200,000
Designated as Hedging Instrument [Member] | Maturing in Next Twelve Months [Member] | Natural Gas [Member]
Economic hedges by derivative type [Line Items]
Derivative, Nonmonetary Notional Amount, Energy Measure | MMBTU	900,000
Designated as Hedging Instrument [Member] | Maturing in Next Twelve Months [Member] | Price Risk Derivative [Member]
Economic hedges by derivative type [Line Items]
Price Risk Fair Value Hedge Derivative, at Fair Value, Net	2,392,000
Designated as Hedging Instrument [Member] | Maturing in Next Twelve Months [Member] | Natural Gas Liquids [Member]
Economic hedges by derivative type [Line Items]
Price Risk Fair Value Hedge Derivative, at Fair Value, Net	200,000
Designated as Hedging Instrument [Member] | Maturing in Year Two [Member] | Natural Gas [Member]
Economic hedges by derivative type [Line Items]
Derivative, Nonmonetary Notional Amount, Energy Measure | MMBTU	1,800,000
Designated as Hedging Instrument [Member] | Maturing in Year Two [Member] | Price Risk Derivative [Member]
Economic hedges by derivative type [Line Items]
Price Risk Fair Value Hedge Derivative, at Fair Value, Net	0
Not Designated as Hedging Instrument [Member]
Economic hedges by derivative type [Line Items]
Foreign Currency Derivative Instruments Not Designated as Hedging Instruments at Fair Value, Net | $	$ 422,074,120
Not Designated as Hedging Instrument [Member] | Forward gasoline and diesel contracts [Member]
Economic hedges by derivative type [Line Items]
Price Risk Fair Value Hedge Derivative, at Fair Value, Net	464,000
Not Designated as Hedging Instrument [Member] | Crude Oil [Member]
Economic hedges by derivative type [Line Items]
Price Risk Fair Value Hedge Derivative, at Fair Value, Net	736,000
Not Designated as Hedging Instrument [Member] | NYMEX WTI Short [Member]
Economic hedges by derivative type [Line Items]
Price Risk Fair Value Hedge Derivative, at Fair Value, Net	890,000
Not Designated as Hedging Instrument [Member] | Maturing in Next Twelve Months [Member]
Economic hedges by derivative type [Line Items]
Foreign Currency Derivative Instruments Not Designated as Hedging Instruments at Fair Value, Net | $	$ 214,491,576
Not Designated as Hedging Instrument [Member] | Maturing in Next Twelve Months [Member] | Forward gasoline and diesel contracts [Member]
Economic hedges by derivative type [Line Items]
Price Risk Fair Value Hedge Derivative, at Fair Value, Net	464,000
Not Designated as Hedging Instrument [Member] | Maturing in Next Twelve Months [Member] | Platinum, Ounces
Economic hedges by derivative type [Line Items]
Derivative forward contract - platinum |	0
Not Designated as Hedging Instrument [Member] | Maturing in Next Twelve Months [Member] | Crude Oil [Member]
Economic hedges by derivative type [Line Items]
Price Risk Fair Value Hedge Derivative, at Fair Value, Net	736,000
Not Designated as Hedging Instrument [Member] | Maturing in Next Twelve Months [Member] | NYMEX WTI Short [Member]
Economic hedges by derivative type [Line Items]
Price Risk Fair Value Hedge Derivative, at Fair Value, Net	890,000
Not Designated as Hedging Instrument [Member] | Maturing in Year Two [Member]
Economic hedges by derivative type [Line Items]
Foreign Currency Derivative Instruments Not Designated as Hedging Instruments at Fair Value, Net | $	$ 207,582,544
Not Designated as Hedging Instrument [Member] | Maturing in Year Two [Member] | Crude Oil [Member]
Economic hedges by derivative type [Line Items]
Price Risk Fair Value Hedge Derivative, at Fair Value, Net	0
Not Designated as Hedging Instrument [Member] | Maturing in Year Two [Member] | NYMEX WTI Short [Member]
Economic hedges by derivative type [Line Items]
Price Risk Fair Value Hedge Derivative, at Fair Value, Net	0