v2.4.0.6
Acquisitions and Divestitures BBPP Holdings Ltda (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended
Mar. 31, 2013
Dec. 31, 2012
Business Acquisition [Line Items]    
Proceeds from Sale of Equity Method Investments $ 88  
Assets Held-for-sale, Current 32 298
Bolivia to Brazil Pipeline [Member]
   
Business Acquisition [Line Items]    
Assets Held-for-sale, Current   $ 88