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Summary of Significant Accounting Policies (Tables) | 12 Months Ended
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Dec. 31, 2014
Barter and Trade Revenues and Expenses |
(In millions) | Years Ended December 31,
| 2014 |  | 2013 |  | 2012
Barter and trade revenues | $ | 69.4 |  | $ | 66.0 |  | $ | 56.5
Barter and trade expenses |  | 68.1 |  |  | 58.5 |  |  | 58.8

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