PROPERTY AND EQUIPMENT - Carrying Value of Property and Equipment and Estimated Service Lives (Details) (USD $) In Millions, unless otherwise specified			12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013 Minimum Buildings and Improvements	Dec. 31, 2013 Minimum Machinery and Equipment	Dec. 31, 2013 Minimum Roads	Dec. 31, 2013 Minimum Other	Dec. 31, 2013 Maximum Buildings and Improvements	Dec. 31, 2013 Maximum Machinery and Equipment	Dec. 31, 2013 Maximum Roads	Dec. 31, 2013 Maximum Other
Property, Plant and Equipment [Line Items]
Land	$ 129	$ 129
Buildings and improvements	1,275	1,327
Machinery and equipment	6,742	6,926
Roads	594	549
Other	332	329
Total cost	9,072	9,260
Allowance for depreciation and amortization	(6,368)	(6,388)
Property and equipment, net	$ 2,704	$ 2,872
Estimated service lives			5 years	2 years	10 years	3 years	40 years	25 years	20 years	10 years