Derivative and Other Financial Instruments (Fair Values of Outstanding Derivative Instruments in the Consolidated Balance Sheets) (Details) - USD ($) $ in Millions	Mar. 31, 2016	Dec. 31, 2015
Derivative assets
Total	$ 53	$ 42
Derivative liabilities
Total	67	52
Fair Value, Inputs, Level 2 [Member] \| Other Current Assets [Member] \| Foreign Exchange [Member] \| Designated as Hedging Instrument [Member]
Derivative assets
Derivatives designated as hedges, Foreign exchange	46	32
Fair Value, Inputs, Level 2 [Member] \| Other Current Assets [Member] \| Commodities [Member] \| Designated as Hedging Instrument [Member]
Derivative assets
Derivatives designated as hedges, Commodities	4	5
Fair Value, Inputs, Level 2 [Member] \| Other Current Assets [Member] \| Commodities [Member] \| Not Designated as Hedging Instrument [Member]
Derivative assets
Derivatives designated as hedges, Commodities	2	3
Fair Value, Inputs, Level 2 [Member] \| Other Noncurrent Assets [Member] \| Commodities [Member] \| Designated as Hedging Instrument [Member]
Derivative assets
Derivatives designated as hedges, Commodities	1	2
Fair Value, Inputs, Level 2 [Member] \| Accounts Payable and Accrued Liabilities [Member] \| Foreign Exchange [Member]
Derivative liabilities
Derivatives not designated as hedges, Foreign exchange	3	2
Fair Value, Inputs, Level 2 [Member] \| Accounts Payable and Accrued Liabilities [Member] \| Foreign Exchange [Member] \| Designated as Hedging Instrument [Member]
Derivative liabilities
Derivatives designated as hedges, Foreign exchange	35	14
Fair Value, Inputs, Level 2 [Member] \| Accounts Payable and Accrued Liabilities [Member] \| Commodities [Member] \| Designated as Hedging Instrument [Member]
Derivative liabilities
Derivatives designated as hedges, Commodities	21	26
Fair Value, Inputs, Level 2 [Member] \| Accounts Payable and Accrued Liabilities [Member] \| Commodities [Member] \| Not Designated as Hedging Instrument [Member]
Derivative liabilities
Derivatives designated as hedges, Commodities	4	5
Fair Value, Inputs, Level 2 [Member] \| Other Noncurrent Liabilities [Member] \| Commodities [Member] \| Designated as Hedging Instrument [Member]
Derivative liabilities
Derivatives designated as hedges, Commodities	$ 4	$ 5

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