Restructuring and Related Implementation Charges (Details 4) - Two Thousand Twelve Restructuring Program [Member] - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Restructuring Cost and Reserve [Line Items]
Beginning Balance	$ 231		$ 192
Charges	52	$ 74	152	$ 176
Cash payments	(47)		(88)
Charges against assets	(5)		(19)
Foreign exchange	0		(6)
Ending Balance	231		231
Employee-Related Costs [Member]
Restructuring Cost and Reserve [Line Items]
Beginning Balance	92		85
Charges	32		67
Cash payments	(29)		(44)
Charges against assets	(1)		(9)
Foreign exchange	0		(5)
Ending Balance	94		94
Incremental Depreciation [Member]
Restructuring Cost and Reserve [Line Items]
Beginning Balance	0		0
Charges	3		9
Cash payments	0		0
Charges against assets	(3)		(9)
Foreign exchange	0		0
Ending Balance	0		0
Asset Impairment [Member]
Restructuring Cost and Reserve [Line Items]
Beginning Balance	0		0
Charges	1		1
Cash payments	0		0
Charges against assets	(1)		(1)
Foreign exchange	0		0
Ending Balance	0		0
Other Restructuring [Member]
Restructuring Cost and Reserve [Line Items]
Beginning Balance	139		107
Charges	16		75
Cash payments	(18)		(44)
Charges against assets	0		0
Foreign exchange	0		(1)
Ending Balance	137		137
Third party Incremental Cost [Member]
Restructuring Cost and Reserve [Line Items]
Charges	14		26
Contract Termination [Member]
Restructuring Cost and Reserve [Line Items]
Charges	1		4
Land and Building [Member]
Restructuring Cost and Reserve [Line Items]
Charges	$ 1		$ 45