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Summary of Significant Accounting Policies (Details) (USD $)
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12 Months Ended | ||
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Dec. 31, 2011
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Dec. 31, 2010
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Dec. 31, 2009
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| Accounting Policies [Abstract] | |||
| FUSF, E-911, and other regulatory fees included in gross revenue | $ 68,600,000 | $ 81,800,000 | $ 171,300,000 |
| Impairment of indefinite-lived intangible assets | 0 | ||
| Sensitivity analysis of fair value, indefinite-lived intangible assets, impairment impact of adverse change in significant assumptions | 0 | ||
| Advertising and promotion costs | 194,300,000 | 187,300,000 | 150,800,000 |
| Accumulated other comprehensive gain, available-for-sale securities | 3,600,000 | ||
| Accumulated other comprehensive loss, cash flow hedging derivatives | $ 12,900,000 | ||
| X | ||||||||||
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- Definition
The amount of regulatory fees incuded in sales and revenues, which are then deducted as a cost of sales. No definition available.
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| X | ||||||||||
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- Definition
Impairment charge that would result from a sensitivity analysis of the fair value estimate for indefinite-lived intangible assets, assuming an adverse change in significant assumptions including a one percent decline in annual revenue growth rates, a one percent decline in annual net cash flows, or a one percent increase in discount rate. No definition available.
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| X | ||||||||||
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- Details
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| X | ||||||||||
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- Definition
Accumulated appreciation or loss, net of tax, in value of the total of available-for-sale securities at the end of an accounting period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Accumulated change, net of tax, in accumulated gains and losses from derivative instruments designated and qualifying as the effective portion of cash flow hedges. Includes an entity's share of an equity investee's Increase or Decrease in deferred hedging gains or losses. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Amount charged to advertising expense for the period, which are expenses incurred with the objective of increasing revenue for a specified brand, product or product line. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The amount of impairment loss recognized in the period resulting from the write-down of the carrying amount of an indefinite-lived intangible asset, other than goodwill, to fair value. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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