Quarterly report pursuant to Section 13 or 15(d)

Commitments and Contingencies - Narrative (Details)

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Commitments and Contingencies - Narrative (Details) - Pre-1972 Copyright Litigation
 1 Months Ended 3 Months Ended 12 Months Ended 15 Months Ended
Oct. 23, 2015
USD ($)
Mar. 31, 2016
USD ($)
Dec. 31, 2015
USD ($)
Oct. 31, 2015
USD ($)
Oct. 01, 2016
installment
Sep. 30, 2015
USD ($)
Dec. 31, 2015
USD ($)
Dec. 31, 2016
USD ($)
Loss Contingencies [Line Items]                
Litigation settlement, amount       $ 90,000,000        
Payment for legal settlement $ 60,000,000 $ 7,500,000.0 $ 7,500,000.0          
Litigation settlement, expense           $ 57,900,000    
Forecast                
Loss Contingencies [Line Items]                
Litigation settlement, expense               $ 24,600,000
Number of litigation installments | installment         2      
Cost of revenue - content acquisition costs                
Loss Contingencies [Line Items]                
Litigation settlement, expense             $ 65,400,000