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Accrued Expenses and Other Current Liabilities (Details) - USD ($)
$ in Millions
Dec. 31, 2017
Dec. 31, 2016
Accrued Expenses And Other Current Liabilities [Abstract]    
Wage and other employee-related accrued expenses $ 72 $ 42
Accrued tax expense 180 154
Accrued Insurance 26 23
Accrued interest expense 43 39
Others 31 84
Total $ 368 $ 372