PROPERTIES AND ACCUMULATED DEPRECIATION (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Property, Plant and Equipment [Line Items]
Properties and equipment at cost	$ 9,681	$ 8,383
Less: Accumulated depreciation	5,500	5,276
Net properties	4,181	3,107
Property, Plant, and Equipment, Additional Disclosures [Abstract]
Cumulative construction-period interest	152	148
Accumulated depreciation for cumulative construction-period interest	91	84
Interest capitalized	4	9	3
Depreciation expense	309	261	238
Land [Member]
Property, Plant and Equipment [Line Items]
Properties and equipment at cost	181	113
Buildings and Building Equipment [Member]
Property, Plant and Equipment [Line Items]
Properties and equipment at cost	801	772
Machinery and Equipment [Member]
Property, Plant and Equipment [Line Items]
Properties and equipment at cost	8,461	7,176
Construction in Progress [Member]
Property, Plant and Equipment [Line Items]
Properties and equipment at cost	$ 238	$ 322