PROPERTY (Schedule of Property) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Property, Plant and Equipment [Line Items]
Property	$ 7,144	$ 7,036
Land [Member]
Property, Plant and Equipment [Line Items]
Property	69	69
Land and waterway improvements [Member]
Property, Plant and Equipment [Line Items]
Property	205	209
Buildings [Member]
Property, Plant and Equipment [Line Items]
Property	396	420
Machinery and equipment [Member]
Property, Plant and Equipment [Line Items]
Property	5,872	5,809
Utility and Supply Lines [Member]
Property, Plant and Equipment [Line Items]
Property	171	164
Other property [Member]
Property, Plant and Equipment [Line Items]
Property	101	98
Construction in Progress [Member]
Property, Plant and Equipment [Line Items]
Property	$ 330	$ 267
Maximum [Member] | Land and waterway improvements [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	25 years
Maximum [Member] | Buildings [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	50 years
Maximum [Member] | Machinery and equipment [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	20 years
Maximum [Member] | Utility and Supply Lines [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	20 years
Maximum [Member] | Other property [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	30 years
Minimum [Member] | Land and waterway improvements [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	15 years
Minimum [Member] | Buildings [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	5 years
Minimum [Member] | Machinery and equipment [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	3 years
Minimum [Member] | Utility and Supply Lines [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	5 years
Minimum [Member] | Other property [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	3 years