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, 2019	Dec. 31, 2018	Dec. 31, 2017
Segment Reporting Information [Line Items]
Rationalizations	$ 205	$ 44	$ 135
Deconsolidation, gain (loss), amount	0	272	0
Asset write-offs and accelerated depreciation	15	4	40
Americas
Segment Reporting Information [Line Items]
Asset write-offs and accelerated depreciation	13	0	0
Europe, Middle East and Africa
Segment Reporting Information [Line Items]
Asset write-offs and accelerated depreciation	2	4	40
Operating Segments
Segment Reporting Information [Line Items]
Rationalizations	205	42	119
Net (gains) losses on asset sales	(16)	(273)	(14)
Operating Segments | Americas
Segment Reporting Information [Line Items]
Rationalizations	90	3	6
Net (gains) losses on asset sales	0	(275)	(4)
Operating Segments | Europe, Middle East and Africa
Segment Reporting Information [Line Items]
Rationalizations	115	36	111
Net (gains) losses on asset sales	(16)	2	(10)
Operating Segments | Asia Pacific
Segment Reporting Information [Line Items]
Rationalizations	0	3	2
Corporate
Segment Reporting Information [Line Items]
Rationalizations	$ 0	$ 2	$ 16