Restructuring and Related Implementation Charges (Details 2) (Two Thousand Twelve Restructuring Program [Member], USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Restructuring Reserve [Roll Forward]
Balance	$ 158
Charges	102	66
Cash payments	(54)
Charges Against Assets	(7)
Foreign exchange	(2)
Balance	197
One-time Termination Benefits [Member]
Restructuring Reserve [Roll Forward]
Balance	116
Charges	20
Cash payments	(31)
Charges Against Assets	(1)
Foreign exchange	(1)
Balance	103
Incremental Depreciation [Member]
Restructuring Reserve [Roll Forward]
Balance	0
Charges	6
Cash payments	0
Charges Against Assets	(6)
Foreign exchange	0
Balance	0
Asset Impairment [Member]
Restructuring Reserve [Roll Forward]
Balance	0
Charges	0
Cash payments	0
Charges Against Assets	0
Foreign exchange	0
Balance	0
Other Restructuring [Member]
Restructuring Reserve [Roll Forward]
Balance	42
Charges	76
Cash payments	(23)
Charges Against Assets	0
Foreign exchange	(1)
Balance	$ 94