Other Current Assets (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Other Assets [Abstract]
Unrealized gains on derivative contracts	$ 619	$ 636
Deferred receivables consideration	446	379
Customer Omnibus Receivable	1,014	450
Financing Receivable, after Allowance for Credit Loss	395	424
Premiums Receivable, Net	41	35
Prepaid Expense, Current	318	184
Biodiesel tax credit	541	0
Tax receivables	579	379
Other Receivables	369	323
Other current assets	278	229
Total other current assets	4,600	3,039
Financing Receivable, Allowance for Credit Loss	3	3
Interest on financing receivables	27	26	$ 25
Reinsurance Recoverables	$ 81	$ 84