Description of Business, Interim Financial Data and Basis of Presentation (Narrative) (Details) (USD $) In Millions, unless otherwise specified		0 Months Ended
	Jun. 30, 2014 Affiliate Market Station	Apr. 15, 2014 San Francisco Baseball Associates, LLC	Apr. 15, 2014 San Francisco Baseball Associates, LLC Other income (expense), net
Accounting Policies [Line Items]
Number of owned and operated radio stations	460
Number of markets	90
Number of radio stations	10,000
Class B Membership Interest (percentage)		1.59%
Sales price for Class B Membership Interest		$ 13.0
Gain on sale of Class B Membership Interest			$ 3.2