Annual report pursuant to Section 13 and 15(d)

Summary Of Significant Accounting Policies (Tables)

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Summary Of Significant Accounting Policies (Tables)
 12 Months Ended
Dec. 31, 2011
Summary Of Significant Accounting Policies [Abstract]  
Depreciation Period Of Property Plant And Equipment

Asset Category

    Depreciation Period

Computer and broadcast equipment and capitalized software

    3 to 6 Years

Buildings, leasehold improvements and land improvements

    3 to 40 Years

Furniture and other equipment

    3 to 10 Years