Financial Instruments - Income Statement Location (Details) - Not Designated as Hedging Instrument - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss)	$ 2,573	$ 2,830
Commodity contracts | Other income (expense), net
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss)	(407)	(56)
Economic interests in loans | Financial services revenue
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss)	$ 2,980	$ 2,886