Restructuring Charges (Narrative) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Restructuring Charges [Abstract]
Restructuring costs	$ 136	$ 74	$ 126
The amount of employees that the workforce was reduced by	5,000
NumbeofSalariedPositionsExpectedtobeEliminated	1,200
Restructuring and Related Cost, Expected Cost	500
Restructuring Charges New Plan	78
Restructuring Chages Old Plan	$ 58