Restructuring and Related Implementation Charges (Details 2) (Two Thousand Twelve Restructuring Program [Member], USD $) In Millions, unless otherwise specified	3 Months Ended	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2013
Restructuring Reserve [Roll Forward]
Balance	$ 172	$ 89
Charges	30	198
Cash payments	(51)	(103)
Charges against assets	(5)	(38)
Foreign exchange	0	0
Balance	146	146
One-time Termination Benefits [Member]
Restructuring Reserve [Roll Forward]
Balance	141	84
Charges	5	91
Cash payments	(40)	(52)
Charges against assets	0	(17)
Foreign exchange	0	0
Balance	106	106
Incremental Depreciation [Member]
Restructuring Reserve [Roll Forward]
Balance	0	0
Charges	5	20
Cash payments	0	0
Charges against assets	(5)	(20)
Foreign exchange	0	0
Balance	0	0
Asset Impairment [Member]
Restructuring Reserve [Roll Forward]
Balance	0	0
Charges	0	1
Cash payments	0	0
Charges against assets	0	(1)
Foreign exchange	0	0
Balance	0	0
Other Restructuring [Member]
Restructuring Reserve [Roll Forward]
Balance	31	5
Charges	20	86
Cash payments	(11)	(51)
Charges against assets	0	0
Foreign exchange	0	0
Balance	$ 40	$ 40