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Financial Instruments and Fair Value Measures (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended 6 Months Ended 3 Months Ended 6 Months Ended 3 Months Ended 6 Months Ended 3 Months Ended 6 Months Ended
Jun. 30, 2011
Jun. 30, 2010
Jun. 30, 2011
Jun. 30, 2010
Jun. 30, 2011
Fair Value, Inputs, Level 2 [Member]
Commodity Contracts [Member]
Dec. 31, 2010
Fair Value, Inputs, Level 2 [Member]
Commodity Contracts [Member]
Jun. 30, 2011
Commodity Contracts [Member]
Dec. 31, 2010
Commodity Contracts [Member]
Jun. 30, 2011
Accounts Notes And Other Receivables [Member]
Commodity Contracts [Member]
Dec. 31, 2010
Accounts Notes And Other Receivables [Member]
Commodity Contracts [Member]
Jun. 30, 2011
Accrued Liability [Member]
Commodity Contracts [Member]
Dec. 31, 2010
Accrued Liability [Member]
Commodity Contracts [Member]
Jun. 30, 2011
Commodity Contracts [Member]
Jun. 30, 2010
Commodity Contracts [Member]
Jun. 30, 2011
Commodity Contracts [Member]
Jun. 30, 2010
Commodity Contracts [Member]
Jun. 30, 2011
Fair Value, Inputs, Level 2 [Member]
Interest Rate Swap Agreements [Member]
Dec. 31, 2010
Fair Value, Inputs, Level 2 [Member]
Interest Rate Swap Agreements [Member]
Jun. 30, 2011
Interest Rate Swap Agreements [Member]
Dec. 31, 2010
Interest Rate Swap Agreements [Member]
Jun. 30, 2011
Accrued Liability [Member]
Interest Rate Swap Agreements [Member]
Dec. 31, 2010
Accrued Liability [Member]
Interest Rate Swap Agreements [Member]
Jun. 30, 2011
Other Assets [Member]
Interest Rate Swap Agreements [Member]
Dec. 31, 2010
Other Assets [Member]
Interest Rate Swap Agreements [Member]
Jun. 30, 2011
Fair Value, Inputs, Level 2 [Member]
Foreign Currency Exchange Contracts [Member]
Dec. 31, 2010
Fair Value, Inputs, Level 2 [Member]
Foreign Currency Exchange Contracts [Member]
Jun. 30, 2011
Foreign Currency Exchange Contracts [Member]
Dec. 31, 2010
Foreign Currency Exchange Contracts [Member]
Jun. 30, 2011
Accounts Notes And Other Receivables [Member]
Foreign Currency Exchange Contracts [Member]
Dec. 31, 2010
Accounts Notes And Other Receivables [Member]
Foreign Currency Exchange Contracts [Member]
Jun. 30, 2011
Accrued Liability [Member]
Foreign Currency Exchange Contracts [Member]
Dec. 31, 2010
Accrued Liability [Member]
Foreign Currency Exchange Contracts [Member]
Jun. 30, 2011
Foreign Currency Exchange Contracts [Member]
Jun. 30, 2010
Foreign Currency Exchange Contracts [Member]
Jun. 30, 2011
Foreign Currency Exchange Contracts [Member]
Jun. 30, 2010
Foreign Currency Exchange Contracts [Member]
Jun. 30, 2011
Fair Value, Inputs, Level 2 [Member]
Available for sale Securities [Member]
Dec. 31, 2010
Fair Value, Inputs, Level 2 [Member]
Available for sale Securities [Member]
Jun. 30, 2011
Fair Value, Inputs, Level 3 [Member]
Jun. 30, 2010
Fair Value, Inputs, Level 3 [Member]
Jun. 30, 2011
Fair Value, Inputs, Level 3 [Member]
Jun. 30, 2010
Fair Value, Inputs, Level 3 [Member]
Jun. 30, 2011
Carrying (Reported) Amount, Fair Value Disclsure [Member]
Dec. 31, 2010
Carrying (Reported) Amount, Fair Value Disclsure [Member]
Jun. 30, 2011
Estimate of Fair Value, Fair Value Disclosure [Member]
Dec. 31, 2010
Estimate of Fair Value, Fair Value Disclosure [Member]
Fair Value Disclosures Paragraph Details [Line Items]                                                                                            
Derivative Notional Amount             $ 27 $ 23                                     $ 5,684 $ 5,733                                    
Fixed rate debt percent changed to LIBOR                                     4.09% 3.88%                                                    
Derivative Amount Of Hedged Item                                     1,400 600                                                    
Derivatives Fair Value By Balance Sheet Location [Line Items]                                                                                            
Derivative Fair Value Of Derivative Asset         3 2                     55 22             56 16                     399 322                
Derivative Fair Value Of Derivative Liability         0 2                     0 0             48 14                                        
Financial Instruments, Financial Assets, Balance Sheet Grouping [Abstract]                                                                                            
Long-term receivables                                                                                     136 203 130 199
Liabilities Balance Sheet Groupings [Abstract]                                                                                            
Long-term debt and related current maturities                                                                                     7,304 6,278 7,864 6,835
Fair Value, by Balance Sheet Grouping Paragraph Details [Line Items]                                                                                            
Non-Financial assets                                                                             5 4 15 18        
Asset Impairment Charges                                                                             2 4 12 17        
Derivative Asset, Fair Value [Abstract]                                                                                            
Asset Designated as a Hedge                 3 2                         55 22         53 10                                
Asset Not Designated as a Hedge                                                         3 6                                
Derivative Liability, Fair Value [Abstract]                                                                                            
Liability Designated as a Hedge                     0 2                 0 0                 43 9                            
Liability Not Designated as a Hedge                                                             5 5                            
Gains Losses Recognized In OCI [Line Items]                                                                                            
Derivative Instruments Gain Loss Recognized In Other Comprehensive Income Effective Portion Net                         (1) (1) 2 (3)                                 8 (12) 16 8                    
Cash Flow Hedge Gain (Loss) Reclassified to Income Statement Locations [Abstract]                                                                                            
Product sales                                                                 10 (3) 16 (6)                    
Costs of products sold                         1 (2) 0 (3)                                 (11) 7 (16) 9                    
Cash Flow Hedge Gain Loss Reclassified To Selling General And Administrative Expense Net                                                                 4 (4) 6 (3)                    
Cash Flow Hedge Gain (Loss) Reclassified to Income Statement Locations Paragraph Details [Abstract]                                                                                            
Gains (Losses) On Interest Rate Swap Agreements 24 16 33 20                                                                                    
Foreign Exchange Mark to Market Expense (Income) $ (15) $ (6) $ (38) $ 16