Property, Plant and Equipment (Details) (USD $) In Millions, unless otherwise specified			12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2011 Building and Building Improvements [Member] years	Dec. 31, 2011 Machinery and Equipment [Member] years	Dec. 31, 2011 Owned [Member]	Dec. 31, 2010 Owned [Member]	Dec. 31, 2011 Assets Held under Capital Leases [Member]	Dec. 31, 2010 Assets Held under Capital Leases [Member]
Property, Plant and Equipment [Line Items]
Land	$ 412	$ 403			$ 411	$ 402	$ 1	$ 1
Buildings	1,991	1,857			1,954	1,821	37	36
Machinery and equipment	11,578	11,602			11,517	11,555	61	47
Construction in progress	849	947			849	947	0	0
Property, plant and equipment, gross	14,830	14,809			14,731	14,725	99	84
Accumulated depreciation	(8,629)	(8,807)			(8,578)	(8,760)	(51)	(47)
Property plant and equipment net before spare parts	6,201	6,002			6,153	5,965	48	37
Spare parts	174	163			174	163	0	0
Property, plant and equipment, net	$ 6,375	$ 6,165			$ 6,327	$ 6,128	$ 48	$ 37
Property, Plant and Equipment, Useful Life, Minimum			5	3
Property, Plant and Equipment, Useful Life, Maximum			45	30