Derivative and Other Financial Instruments - Fair Values of Derivative Instruments and Valuation Hierarchy (Details) - USD ($) $ in Millions	Mar. 31, 2019	Dec. 31, 2018
Derivative assets
Total	$ 66	$ 47
Derivative liabilities
Total	45	59
Fair Value, Inputs, Level 2
Derivative assets
Total	66	47
Derivative liabilities
Total	45	59
Fair Value, Inputs, Level 2 \| Other current assets \| Foreign exchange \| Derivatives not designated as hedges
Derivative assets
Derivative Instruments Not Designated as Hedging Instruments, Asset, at Fair Value	5	4
Fair Value, Inputs, Level 2 \| Accrued liabilities \| Foreign exchange \| Derivatives not designated as hedges
Derivative assets
Derivative Instruments Not Designated as Hedging Instruments, Asset, at Fair Value	9	4
Fair Value, Inputs, Level 2 \| Other non-current assets \| Foreign exchange \| Derivatives not designated as hedges
Derivative assets
Derivative Instruments Not Designated as Hedging Instruments, Asset, at Fair Value	2	0
Fair Value, Inputs, Level 2 \| Other non-current liabilities \| Foreign exchange \| Derivatives not designated as hedges
Derivative assets
Derivative Instruments Not Designated as Hedging Instruments, Asset, at Fair Value	1	0
Fair Value, Inputs, Level 2 \| Other assets \| Designated as Hedging Instrument
Derivative assets
Derivatives designated as hedges	59	43
Fair Value, Inputs, Level 2 \| Other assets \| Derivatives not designated as hedges
Derivative assets
Derivative Instruments Not Designated as Hedging Instruments, Asset, at Fair Value	7	4
Fair Value, Inputs, Level 2 \| Other liabilities \| Designated as Hedging Instrument
Derivative assets
Derivatives designated as hedges	35	55
Fair Value, Inputs, Level 2 \| Other liabilities \| Derivatives not designated as hedges
Derivative assets
Derivative Instruments Not Designated as Hedging Instruments, Asset, at Fair Value	10	4
Derivatives in cash flow hedges \| Fair Value, Inputs, Level 2 \| Other current assets \| Foreign exchange \| Designated as Hedging Instrument
Derivative assets
Derivatives designated as hedges	7	6
Derivatives in cash flow hedges \| Fair Value, Inputs, Level 2 \| Other current assets \| Commodities \| Designated as Hedging Instrument
Derivative assets
Derivatives designated as hedges, Commodities	14	16
Derivatives in cash flow hedges \| Fair Value, Inputs, Level 2 \| Accrued liabilities \| Foreign exchange \| Designated as Hedging Instrument
Derivative assets
Derivatives designated as hedges	10	5
Derivatives in cash flow hedges \| Fair Value, Inputs, Level 2 \| Accrued liabilities \| Commodities \| Designated as Hedging Instrument
Derivative assets
Derivatives designated as hedges, Commodities	23	42
Derivatives in cash flow hedges \| Fair Value, Inputs, Level 2 \| Other non-current assets \| Foreign exchange \| Designated as Hedging Instrument
Derivative assets
Derivatives designated as hedges	1	3
Derivatives in cash flow hedges \| Fair Value, Inputs, Level 2 \| Other non-current assets \| Commodities \| Designated as Hedging Instrument
Derivative assets
Derivatives designated as hedges, Commodities	2	2
Derivatives in cash flow hedges \| Fair Value, Inputs, Level 2 \| Other non-current liabilities \| Foreign exchange \| Designated as Hedging Instrument
Derivative assets
Derivatives designated as hedges	0	1
Derivatives in cash flow hedges \| Fair Value, Inputs, Level 2 \| Other non-current liabilities \| Commodities \| Designated as Hedging Instrument
Derivative assets
Derivatives designated as hedges, Commodities	2	6
Derivatives in fair value hedges \| Accrued liabilities \| Designated as Hedging Instrument
Derivative liabilities
Derivatives designated as hedges, Foreign exchange	64	13
Derivatives in fair value hedges \| Fair Value, Inputs, Level 2 \| Other current assets \| Foreign exchange \| Designated as Hedging Instrument
Derivative assets
Derivatives designated as hedges	1	1
Derivatives in fair value hedges \| Fair Value, Inputs, Level 2 \| Accrued liabilities \| Foreign exchange \| Designated as Hedging Instrument
Derivative assets
Derivatives designated as hedges	0	1
Derivatives designated as net investment hedges \| Fair Value, Inputs, Level 2 \| Other non-current assets \| Designated as Hedging Instrument
Derivative assets
Derivatives designated as hedges	34	15
Derivatives designated as net investment hedges \| Fair Value, Inputs, Level 2 \| Other non-current liabilities \| Designated as Hedging Instrument
Derivative assets
Derivatives designated as hedges	$ 0	$ 0

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