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Legal Contingencies (Details)
In Millions
3 Months Ended 6 Months Ended
Dec. 31, 2010
USD ($)
Dec. 31, 2010
BRL
Jun. 30, 2011
USD ($)
Jun. 30, 2011
BRL
Jun. 09, 2011
USD ($)
Loss Contingency Accrual [Roll Forward]          
Loss contingency provision $ 39 60 $ 3 5  
Ending balance, loss contingency       65  
Loss Contingencies [Line Items]          
Meritor Judgment Motion Denial Zero Damages And No Injuctive Relief         $ 0