Derivative and Other Financial Instruments (Fair Values of Outstanding Derivative Instruments in the Consolidated Balance Sheets) (Details) - USD ($) $ in Millions	Sep. 30, 2017	Dec. 31, 2016
Derivative assets
Total	$ 47	$ 45
Derivative liabilities
Total	32	37
Fair Value, Inputs, Level 2 \| Other current assets \| Foreign exchange \| Designated as Hedging Instrument
Derivative assets
Derivatives designated as hedges, Foreign exchange	12	24
Fair Value, Inputs, Level 2 \| Other current assets \| Commodities \| Designated as Hedging Instrument
Derivative assets
Derivatives designated as hedges, Commodities	16	13
Fair Value, Inputs, Level 2 \| Other current assets \| Commodities \| Not Designated as Hedging Instrument
Derivative assets
Derivatives designated as hedges, Commodities	15	5
Fair Value, Inputs, Level 2 \| Other non-current assets \| Commodities \| Designated as Hedging Instrument
Derivative assets
Derivatives designated as hedges, Commodities	3	3
Fair Value, Inputs, Level 2 \| Other non-current assets \| Commodities \| Not Designated as Hedging Instrument
Derivative assets
Derivatives designated as hedges, Commodities	1	0
Fair Value, Inputs, Level 2 \| Accounts payable and accrued liabilities \| Foreign exchange \| Designated as Hedging Instrument
Derivative liabilities
Derivatives designated as hedges, Foreign exchange	12	28
Fair Value, Inputs, Level 2 \| Accounts payable and accrued liabilities \| Foreign exchange \| Not Designated as Hedging Instrument
Derivative liabilities
Derivatives not designated as hedges, Foreign exchange	10	5
Fair Value, Inputs, Level 2 \| Accounts payable and accrued liabilities \| Commodities \| Designated as Hedging Instrument
Derivative liabilities
Derivatives designated as hedges, Commodities	1	3
Fair Value, Inputs, Level 2 \| Accounts payable and accrued liabilities \| Commodities \| Not Designated as Hedging Instrument
Derivative liabilities
Derivatives designated as hedges, Commodities	8	0
Fair Value, Inputs, Level 2 \| Other non-current liabilities \| Commodities \| Designated as Hedging Instrument
Derivative liabilities
Derivatives designated as hedges, Commodities	0	1
Fair Value, Inputs, Level 2 \| Other non-current liabilities \| Commodities \| Not Designated as Hedging Instrument
Derivative liabilities
Derivatives designated as hedges, Commodities	$ 1	$ 0

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
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