Financial Instruments and Risk Management - Impact on Earnings (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Amounts reclassified into earnings:
Commodity contracts	$ 3		$ 7	$ 1
Cross currency swap contracts	(1)		(1)
Commodity and currency exchange contracts attributed to the divestment business	4		4
Currency exchange contracts	1		1	1
Change in fair value of cash flow hedges:
Commodity contracts	13	$ (15)	6	(11)
Interest rate contracts	1
Cross currency swap contracts	(6)		(6)
Currency exchange contracts	(3)		1	(6)
Foreign Currency and tax impacts	(2)	3	(2)	3
Changes in accumulated other comprehensive earnings (loss) for effective derivatives	10	(12)	10	(12)
Cash Flow Hedge - Reclassified Amount from Other Comprehensive Earnings (Loss)	(7)		(11)	(2)
Gain (Loss) on Derivatives not Designated as Hedge Instruments	66	90	(76)	52
Commodity contracts \| Net sales
Change in fair value of cash flow hedges:
Cash Flow Hedge - Reclassified Amount from Other Comprehensive Earnings (Loss)		2	3	1
Gain (Loss) on Derivatives not Designated as Hedge Instruments				1
Commodity contracts \| Cost of sales
Change in fair value of cash flow hedges:
Cash Flow Hedge - Reclassified Amount from Other Comprehensive Earnings (Loss)	(3)	(2)	(10)	(2)
Gain (Loss) on Derivatives not Designated as Hedge Instruments		(3)		(3)
Interest rate contracts \| Debt refinancing and other costs
Change in fair value of cash flow hedges:
Gain (Loss) on Derivatives not Designated as Hedge Instruments	(4)	5	(20)	5
Foreign currency contracts \| Selling, general and administrative
Change in fair value of cash flow hedges:
Cash Flow Hedge - Reclassified Amount from Other Comprehensive Earnings (Loss)	(1)		(1)	(1)
Gain (Loss) on Derivatives not Designated as Hedge Instruments	36	(7)	36	(21)
Foreign currency contracts \| Business consolidation and other activities
Change in fair value of cash flow hedges:
Gain (Loss) on Derivatives not Designated as Hedge Instruments	1	96	(87)	68
Equity contracts \| Selling, general and administrative
Change in fair value of cash flow hedges:
Gain (Loss) on Derivatives not Designated as Hedge Instruments	1	$ (1)	(1)	$ 2
Cross-currency swap \| Selling, general and administrative
Change in fair value of cash flow hedges:
Cash Flow Hedge - Reclassified Amount from Other Comprehensive Earnings (Loss)	1		1
Cross-currency swap \| Business consolidation and other activities
Change in fair value of cash flow hedges:
Gain (Loss) on Derivatives not Designated as Hedge Instruments	32		(4)
Commodity Contract And Currency Exchange Contract \| Business consolidation and other activities
Change in fair value of cash flow hedges:
Cash Flow Hedge - Reclassified Amount from Other Comprehensive Earnings (Loss)	$ (4)		$ (4)

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The amount of net gains or losses on cross currency cash flow hedges reclassified during the period to earnings from accumulated other comprehensive income upon the hedged transaction affecting earnings.

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The amount of net gains or losses on price risk cash flow hedges and currency exchange contracts attributed to the divestment business reclassified during the period to earnings from accumulated other comprehensive income.

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