Property, Plant and Equipment - Asset Impairment and Exit Costs (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Impaired Assets to be Disposed of by Method Other than Sale [Line Items]
Non-cash property, plant and equipment write-downs			$ 99	$ 4
Simplify to Grow Program
Impaired Assets to be Disposed of by Method Other than Sale [Line Items]
Non-cash property, plant and equipment write-downs	$ 7	$ (1)	8	5
Simplify to Grow Program | Latin America
Impaired Assets to be Disposed of by Method Other than Sale [Line Items]
Non-cash property, plant and equipment write-downs	0	0	0	1
Simplify to Grow Program | AMEA
Impaired Assets to be Disposed of by Method Other than Sale [Line Items]
Non-cash property, plant and equipment write-downs	5	(3)	4	(2)
Simplify to Grow Program | Europe
Impaired Assets to be Disposed of by Method Other than Sale [Line Items]
Non-cash property, plant and equipment write-downs	1	1	2	2
Simplify to Grow Program | North America
Impaired Assets to be Disposed of by Method Other than Sale [Line Items]
Non-cash property, plant and equipment write-downs	$ 1	$ 1	$ 2	$ 4