Property, Plant and Equipment - Asset Impairment and Exit Costs (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Impaired Assets to be Disposed of by Method Other than Sale [Line Items]
Non-cash property, plant and equipment write-downs	$ 109	$ 141	$ 334
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	50	59	206
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	25	36
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	(2)	5	81
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	46	15	58
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	5	13	30
Simplify to Grow Program | Corporate
Impaired Assets to be Disposed of by Method Other than Sale [Line Items]
Non-cash property, plant and equipment write-downs	$ 1	$ 1	$ 1