Business Segments - Rationalizations, Asset Sales, Other Expense and Asset Write-offs and Accelerated Depreciation Attributable to the SBUs (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Segment Reporting Information [Line Items]
Rationalizations	$ 114	$ 95	$ 58
Net gains (losses) on asset sales	71	3	8
Asset write-offs and accelerated depreciation	8	7	23
Operating Segments
Segment Reporting Information [Line Items]
Net gains (losses) on asset sales	(7)	1	8
Operating Segments | North America
Segment Reporting Information [Line Items]
Rationalizations	9	(6)	12
Net gains (losses) on asset sales	1	8	4
Operating Segments | Europe, Middle East and Africa
Segment Reporting Information [Line Items]
Rationalizations	95	89	26
Net gains (losses) on asset sales	(14)	(7)	1
Asset write-offs and accelerated depreciation	8	7	23
Operating Segments | Asia Pacific
Segment Reporting Information [Line Items]
Rationalizations	4	9	16
Net gains (losses) on asset sales	5	0	2
Operating Segments | Latin America
Segment Reporting Information [Line Items]
Rationalizations	6	3	4
Net gains (losses) on asset sales	1	0	1
Corporate
Segment Reporting Information [Line Items]
Net gains (losses) on asset sales	78	$ 2	$ 0
SRI
Segment Reporting Information [Line Items]
Net gains (losses) on asset sales	48
Pre-tax gain on sale of common stock in SRI	$ 30