Property, Plant and Equipment (Details) (USD $) In Millions, unless otherwise specified							12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013 Owned	Dec. 31, 2012 Owned	Dec. 31, 2013 Capital Leases	Dec. 31, 2012 Capital Leases	Dec. 31, 2013 Minimum Building and Building Improvements	Dec. 31, 2013 Minimum Machinery and Equipment	Dec. 31, 2013 Maximum Building and Building Improvements	Dec. 31, 2013 Maximum Machinery and Equipment
Property, Plant and Equipment [Line Items]
Land	$ 434	$ 416	$ 433	$ 415	$ 1	$ 1
Buildings	2,359	2,078	2,336	2,061	23	17
Machinery and equipment	12,517	12,082	12,445	12,036	72	46
Construction in progress	978	1,188	978	1,173	0	15
Property, plant and equipment, gross	16,288	15,764	16,192	15,685	96	79
Accumulated depreciation	(9,158)	(8,991)	(9,137)	(8,975)	(21)	(16)
Property plant and equipment net before spare parts	7,130	6,773	7,055	6,710	75	63
Spare parts	190	183	190	183	0	0
Property, plant and equipment, net	$ 7,320	$ 6,956	$ 7,245	$ 6,893	$ 75	$ 63
Property, Plant and Equipment, Useful Life, Minimum							5 years	3 years	45 years	30 years