Employee Separation / Asset Related Charges, Net (Schedule of 2012 Restructuring Program) (Details) (Restructuring Program 2012 [Member], USD $) In Millions, unless otherwise specified	9 Months Ended
	Sep. 30, 2013		Dec. 31, 2012
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve	$ 91		$ 161
Payments	(69)
Net translation adjustment	(1)
Employee Separation Costs [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve	87		154
Payments	(66)
Net translation adjustment	(1)
Other Non-Personnel Charges [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve	4	[1]	7	[1]
Payments	(3)	[1]
Net translation adjustment	$ 0	[1]

[1] Other non-personnel charges consist of contractual obligation costs.