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Related Party Transactions (Schedule of Related Party Receivables and Payables) (Details) - USD ($)
$ in Millions
Dec. 31, 2016
Dec. 31, 2015
Related Party Transaction [Line Items]    
Accounts payable and accrued liabilities $ 1,146 $ 1,196
Other long-term liabilities 386 312
Banco Bradesco [Member] | Affiliated Entity [Member]    
Related Party Transaction [Line Items]    
Trade receivables 45 31
Accounts payable and accrued liabilities 10 9
Other long-term liabilities $ 22 $ 24