Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2012

Accounting Policies [Abstract]

Barter and Trade Revenues and Expenses [Table Text Block]

(In millions)		Years Ended December 31,
		2012		2011		2010
Barter and trade revenues	$	56.5	$	61.2	$	67.0
Barter and trade expenses		58.8		63.4		66.4