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Short-term Borrowings and Other Debt Obligations (Schedule of Short-term Debt) (Details) - USD ($)
$ in Millions
Jun. 30, 2017
Dec. 31, 2016
Short-term Debt [Line Items]    
Short-term debt $ 7 $ 2
Current portion of long-term debt and term loan agreement 145 177
Short-term borrowings and current portion of long-term debt 152 179
Revolving credit facility    
Short-term Debt [Line Items]    
Short-term debt 0 0
Other short-term bank loans    
Short-term Debt [Line Items]    
Short-term debt $ 7 $ 2