DIVESTITURE - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Proceeds from sales of property	$ 330	$ 21	$ 0
Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal		(5)
Rail Infrastructure Operations and Assets [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Disposal Group, Including Discontinued Operation, Assets, Noncurrent	9
Proceeds from sales of property	95
Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal	86
Marine and Terminal Operations and Assets [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Disposal Group, Including Discontinued Operation, Assets, Noncurrent	41
Proceeds from sales of property	226
Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal	185
Lease Obligation Incurred	38
Acetone Derivatives Assets [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Proceeds from sales of property		17
Additional Paid-in Capital
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Adjustments to Additional Paid in Capital, Other	$ 0	$ 3	$ 0