Restructuring and Related Implementation Charges (Details 4) - Two Thousand Twelve Restructuring Program [Member] - USD ($) $ in Millions	3 Months Ended		9 Months Ended		36 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015
Restructuring Cost and Reserve [Line Items]
Beginning Balance	$ 231		$ 192
Charges	46	$ 55	198	$ 231
Cash payments	(37)		(125)
Charges against assets	(16)		(35)
Foreign exchange	0		(6)
Ending Balance	224		224		$ 224
Employee-Related Costs [Member]
Restructuring Cost and Reserve [Line Items]
Beginning Balance	94		85
Charges	22		89
Cash payments	(17)		(61)
Charges against assets	(8)		(17)
Foreign exchange	0		(5)
Ending Balance	91		91		91
Incremental Depreciation [Member]
Restructuring Cost and Reserve [Line Items]
Beginning Balance	0		0
Charges	6		15
Cash payments	0		0
Charges against assets	(6)		(15)
Foreign exchange	0		0
Ending Balance	0		0		0
Asset Impairment [Member]
Restructuring Cost and Reserve [Line Items]
Beginning Balance	0		0
Charges	2		3
Cash payments	0		0
Charges against assets	(2)		(3)
Foreign exchange	0		0
Ending Balance	0		0		0
Other Restructuring [Member]
Restructuring Cost and Reserve [Line Items]
Beginning Balance	137		107
Charges	16		91
Cash payments	(20)		(64)
Charges against assets	0		0
Foreign exchange	0		(1)
Ending Balance	133		133		$ 133
Third party Incremental Cost [Member]
Restructuring Cost and Reserve [Line Items]
Charges	13		39
Contract Termination [Member]
Restructuring Cost and Reserve [Line Items]
Charges	1		5
Land and Building [Member]
Restructuring Cost and Reserve [Line Items]
Charges	$ 2		$ 47
Average Percentage of Aftertax Rate of Return [Member]
Restructuring Cost and Reserve [Line Items]
Average Percentage of Aftertax Rate of Return Program to Date					30.00%