Restructuring and Related Implementation Charges (Details 2) (Two Thousand Twelve Restructuring Program [Member], USD $) In Millions, unless otherwise specified	3 Months Ended	6 Months Ended
	Jun. 30, 2013	Jun. 30, 2013
Restructuring Reserve [Roll Forward]
Balance	$ 123	$ 89
Restructuring and Related Cost, Incurred Cost	102	168
Cash payments	(26)	(52)
Charges against assets	(27)	(33)
Foreign exchange	0	0
Balance	172	172
One-time Termination Benefits [Member]
Restructuring Reserve [Roll Forward]
Balance	95	84
Restructuring and Related Cost, Incurred Cost	71	86
Cash payments	(8)	(12)
Charges against assets	(17)	(17)
Foreign exchange	0	0
Balance	141	141
Incremental Depreciation [Member]
Restructuring Reserve [Roll Forward]
Balance	0	0
Restructuring and Related Cost, Incurred Cost	9	15
Cash payments	0	0
Charges against assets	(9)	(15)
Foreign exchange	0	0
Balance	0	0
Asset Impairment [Member]
Restructuring Reserve [Roll Forward]
Balance	0	0
Restructuring and Related Cost, Incurred Cost	1	1
Cash payments	0	0
Charges against assets	(1)	(1)
Foreign exchange	0	0
Balance	0	0
Other Restructuring [Member]
Restructuring Reserve [Roll Forward]
Balance	28	5
Restructuring and Related Cost, Incurred Cost	21	66
Cash payments	(18)	(40)
Charges against assets	0	0
Foreign exchange	0	0
Balance	$ 31	$ 31