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Subsequent Events (Details) - Subsequent Event
$ in Millions
Oct. 02, 2017
USD ($)
Term Loan B, Maturing 2024  
Subsequent Event [Line Items]  
Annual principal payments due $ 3
Term Loan B, Maturing 2024 | LIBOR  
Subsequent Event [Line Items]  
LIBOR plus margin range 2.25%
Katz Broadcasting  
Subsequent Event [Line Items]  
Business purchase price net of noncontrolling interest $ 292
Debt amount $ 300