Derivatives (Details) (USD $)
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3 Months Ended | 1 Months Ended | 3 Months Ended | |||||||||||||
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Mar. 31, 2012
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Dec. 31, 2011
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Mar. 31, 2012
Cash flow hedge
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Mar. 31, 2011
Cash flow hedge
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Mar. 31, 2012
Cash flow hedge
Foreign currency forward/option contracts
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Mar. 31, 2011
Cash flow hedge
Foreign currency forward/option contracts
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Mar. 31, 2011
Cash flow hedge
Foreign currency forward/option contracts
Cost of Sales
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Mar. 31, 2012
Cash flow hedge
Foreign currency forward contracts
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Mar. 31, 2011
Cash flow hedge
Foreign currency forward contracts
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Mar. 31, 2011
Cash flow hedge
Foreign currency forward contracts
Interest expense
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Mar. 31, 2012
Cash flow hedge
Commodity price swap contracts
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Mar. 31, 2011
Cash flow hedge
Commodity price swap contracts
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Mar. 31, 2012
Cash flow hedge
Commodity price swap contracts
Cost of Sales
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Mar. 31, 2011
Cash flow hedge
Commodity price swap contracts
Cost of Sales
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Aug. 31, 2011
Cash flow hedge
Interest rate swap contracts
Y
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Mar. 31, 2012
Cash flow hedge
Interest rate swap contracts
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Derivatives gain (loss) | ||||||||||||||||
Maximum length of time hedged (in months) | 12 months | 12 months | ||||||||||||||
Term of interest rate swap (in years) | 5 years | |||||||||||||||
Dollar equivalent gross notional amount, foreign exchange forward and option contracts designated as cash flow hedges | $ 5,200,000,000 | |||||||||||||||
Dollar equivalent gross notional amount, natural gas commodity price swaps designated as cash flow hedges | 23,000,000 | |||||||||||||||
Dollar equivalent gross notional amount, forecasted debt issuance contracts designated as cash flow hedges | 400,000,000 | |||||||||||||||
Principal amount | 1,000,000,000 | |||||||||||||||
Pretax Gain (Loss) Recognized in Other Comprehensive Income on Effective portion of Derivative | (28,000,000) | (27,000,000) | (24,000,000) | (34,000,000) | 1,000,000 | 8,000,000 | (5,000,000) | (1,000,000) | (7,000,000) | |||||||
Accumulated other comprehensive income (loss), unrealized gain (loss) on cash flow hedges | 7,000,000 | 22,000,000 | (4,000,000) | |||||||||||||
The time period estimated for the anticipated transfer of gains (losses), net from accumulated other comprehensive income into earnings (in months) | 12 months | 5 years | ||||||||||||||
Debt instrument term | 5 | |||||||||||||||
Pretax Gain (Loss) Recognized in Income on Effective Portion of Derivative as a Result of Reclassification from Accumulated Other Comprehensive Income | $ (4,000,000) | $ (6,000,000) | $ 10,000,000 | $ (4,000,000) | $ (4,000,000) |