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Debt - Summary of Total Outstanding Debt (Details) - USD ($)
$ in Millions
Dec. 31, 2016
Dec. 31, 2015
Short-Term Debt:    
Short-Term Debt [1] $ 80 $ 1
Long-Term Debt:    
Long-Term Debt 91 200
Chinese Credit Facilities    
Short-Term Debt:    
Credit Facilities 7 1
2016 Credit Facility    
Short-Term Debt:    
Credit Facilities 73  
2015 Credit Facility    
Long-Term Debt:    
Credit Facilities $ 91 $ 200
[1] The weighted-average interest rate on short-term debt was 2.1% as of December 31, 2016.