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Long-Term Debt, Short-Term Debt, and Financing Arrangements - Short-Term Debt (Detail) - USD ($)
$ in Millions
Dec. 31, 2016
Dec. 31, 2015
Debt Disclosure [Abstract]    
Maturities classified as current $ 3 $ 1
Short-term borrowings 87 85
Total short-term debt $ 90 $ 86