Business Segments - Charges and Credits Attributable to the SBUs (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Segment Reporting Information [Line Items]
Rationalizations	$ 37	$ 29
Net (gains) losses on asset sales	2	(1)
Asset write-offs and accelerated depreciation	1	8
Americas
Segment Reporting Information [Line Items]
Net (gains) losses on asset sales	0	(1)
Europe, Middle East and Africa
Segment Reporting Information [Line Items]
Net (gains) losses on asset sales	2	0
Asset write-offs and accelerated depreciation	1	8
Operating Segments
Segment Reporting Information [Line Items]
Rationalizations	33	29
Operating Segments | Americas
Segment Reporting Information [Line Items]
Rationalizations	3	1
Operating Segments | Europe, Middle East and Africa
Segment Reporting Information [Line Items]
Rationalizations	27	27
Operating Segments | Asia Pacific
Segment Reporting Information [Line Items]
Rationalizations	3	1
Corporate
Segment Reporting Information [Line Items]
Rationalizations	$ 4	$ 0