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Accrued Expenses and Other Current Liabilities - Details of Accrued Expenses and Other Current Liabilities (Details) - USD ($)
$ in Millions
Dec. 31, 2016
Dec. 31, 2015
Payables And Accruals [Abstract]    
Accrued employee salary, bonus, and related benefits $ 53 $ 47
Accrued marketing costs 37 43
Other 37 33
Total $ 127 $ 123