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Quarterly Results of Operations (Unaudited) (Schedule Of CY Quarterly Profit And Loss) (Detail) (USD $) In Thousands, except Per Share data, unless otherwise specified | 3 Months Ended | 12 Months Ended
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Dec. 31, 2014 | Sep. 30, 2014 | Jun. 30, 2014 | Mar. 31, 2014 | Dec. 31, 2013 | Sep. 30, 2013 | Jun. 30, 2013 | Mar. 31, 2013 | Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
Quarterly Results of Operations (Unaudited) [Abstract] |  |  |  |  |  |  |  |  |  |  |
Revenue | $ 1,715,797 us-gaap_Revenues | $ 1,630,034 us-gaap_Revenues | $ 1,630,154 us-gaap_Revenues | $ 1,342,548 us-gaap_Revenues | $ 1,694,367 us-gaap_Revenues | $ 1,587,522 us-gaap_Revenues | $ 1,618,097 us-gaap_Revenues | $ 1,343,058 us-gaap_Revenues | $ 6,318,533 us-gaap_Revenues | $ 6,243,044 us-gaap_Revenues | $ 6,246,884 us-gaap_Revenues
Operating Expenses [Abstract] |  |  |  |  |  |  |  |  |  |  |
Direct operating expenses | 648,666 us-gaap_DirectOperatingCosts | 645,981 us-gaap_DirectOperatingCosts | 643,222 us-gaap_DirectOperatingCosts | 596,496 us-gaap_DirectOperatingCosts | 674,978 us-gaap_DirectOperatingCosts | 648,743 us-gaap_DirectOperatingCosts | 632,586 us-gaap_DirectOperatingCosts | 597,780 us-gaap_DirectOperatingCosts | 2,534,365 us-gaap_DirectOperatingCosts | 2,554,087 us-gaap_DirectOperatingCosts | 2,498,400 us-gaap_DirectOperatingCosts
Selling, general and administrative expenses | 421,116 us-gaap_SellingGeneralAndAdministrativeExpense | 429,687 us-gaap_SellingGeneralAndAdministrativeExpense | 420,577 us-gaap_SellingGeneralAndAdministrativeExpense | 415,828 us-gaap_SellingGeneralAndAdministrativeExpense | 423,803 us-gaap_SellingGeneralAndAdministrativeExpense | 411,354 us-gaap_SellingGeneralAndAdministrativeExpense | 411,341 us-gaap_SellingGeneralAndAdministrativeExpense | 403,363 us-gaap_SellingGeneralAndAdministrativeExpense | 1,687,208 us-gaap_SellingGeneralAndAdministrativeExpense | 1,649,861 us-gaap_SellingGeneralAndAdministrativeExpense | 1,666,418 us-gaap_SellingGeneralAndAdministrativeExpense
Corporate expenses | 87,228 us-gaap_OtherGeneralAndAdministrativeExpense | 78,202 us-gaap_OtherGeneralAndAdministrativeExpense | 82,196 us-gaap_OtherGeneralAndAdministrativeExpense | 72,705 us-gaap_OtherGeneralAndAdministrativeExpense | 67,812 us-gaap_OtherGeneralAndAdministrativeExpense | 89,574 us-gaap_OtherGeneralAndAdministrativeExpense | 75,328 us-gaap_OtherGeneralAndAdministrativeExpense | 80,800 us-gaap_OtherGeneralAndAdministrativeExpense | 320,331 us-gaap_OtherGeneralAndAdministrativeExpense | 313,514 us-gaap_OtherGeneralAndAdministrativeExpense | 293,207 us-gaap_OtherGeneralAndAdministrativeExpense
Depreciation and amortization | 186,100 us-gaap_DepreciationDepletionAndAmortization | 175,865 us-gaap_DepreciationDepletionAndAmortization | 174,062 us-gaap_DepreciationDepletionAndAmortization | 174,871 us-gaap_DepreciationDepletionAndAmortization | 191,582 us-gaap_DepreciationDepletionAndAmortization | 177,330 us-gaap_DepreciationDepletionAndAmortization | 179,734 us-gaap_DepreciationDepletionAndAmortization | 182,182 us-gaap_DepreciationDepletionAndAmortization | 710,898 us-gaap_DepreciationDepletionAndAmortization | 730,828 us-gaap_DepreciationDepletionAndAmortization | 729,285 us-gaap_DepreciationDepletionAndAmortization
Impairment charges | 19,239 us-gaap_AssetImpairmentCharges | 35 us-gaap_AssetImpairmentCharges | 4,902 us-gaap_AssetImpairmentCharges | 0 us-gaap_AssetImpairmentCharges | 16,970 us-gaap_AssetImpairmentCharges | 0 us-gaap_AssetImpairmentCharges | 0 us-gaap_AssetImpairmentCharges | 0 us-gaap_AssetImpairmentCharges | 24,176 us-gaap_AssetImpairmentCharges | 16,970 us-gaap_AssetImpairmentCharges | 37,651 us-gaap_AssetImpairmentCharges
Other operating income, net | (5,678)us-gaap_OtherOperatingIncomeExpenseNet | 47,172 us-gaap_OtherOperatingIncomeExpenseNet | (1,628)us-gaap_OtherOperatingIncomeExpenseNet | 165 us-gaap_OtherOperatingIncomeExpenseNet | 13,304 us-gaap_OtherOperatingIncomeExpenseNet | 6,186 us-gaap_OtherOperatingIncomeExpenseNet | 1,113 us-gaap_OtherOperatingIncomeExpenseNet | 2,395 us-gaap_OtherOperatingIncomeExpenseNet | 40,031 us-gaap_OtherOperatingIncomeExpenseNet | 22,998 us-gaap_OtherOperatingIncomeExpenseNet | 48,127 us-gaap_OtherOperatingIncomeExpenseNet
Operating income (loss) | 347,770 us-gaap_OperatingIncomeLoss | 347,436 us-gaap_OperatingIncomeLoss | 303,567 us-gaap_OperatingIncomeLoss | 82,813 us-gaap_OperatingIncomeLoss | 332,526 us-gaap_OperatingIncomeLoss | 266,707 us-gaap_OperatingIncomeLoss | 320,221 us-gaap_OperatingIncomeLoss | 81,328 us-gaap_OperatingIncomeLoss | 1,081,586 us-gaap_OperatingIncomeLoss | 1,000,782 us-gaap_OperatingIncomeLoss | 1,070,050 us-gaap_OperatingIncomeLoss
Interest expense | 437,261 us-gaap_InterestExpense | 432,616 us-gaap_InterestExpense | 440,605 us-gaap_InterestExpense | 431,114 us-gaap_InterestExpense | 418,014 us-gaap_InterestExpense | 438,404 us-gaap_InterestExpense | 407,508 us-gaap_InterestExpense | 385,525 us-gaap_InterestExpense | 1,741,596 us-gaap_InterestExpense | 1,649,451 us-gaap_InterestExpense | 1,549,023 us-gaap_InterestExpense
Gain (loss) on marketable securities | 0 us-gaap_RealizedGainLossOnMarketableSecuritiesCostMethodInvestmentsAndOtherInvestments | 0 us-gaap_RealizedGainLossOnMarketableSecuritiesCostMethodInvestmentsAndOtherInvestments | 0 us-gaap_RealizedGainLossOnMarketableSecuritiesCostMethodInvestmentsAndOtherInvestments | 0 us-gaap_RealizedGainLossOnMarketableSecuritiesCostMethodInvestmentsAndOtherInvestments | (50)us-gaap_RealizedGainLossOnMarketableSecuritiesCostMethodInvestmentsAndOtherInvestments | 31 us-gaap_RealizedGainLossOnMarketableSecuritiesCostMethodInvestmentsAndOtherInvestments | 130,898 us-gaap_RealizedGainLossOnMarketableSecuritiesCostMethodInvestmentsAndOtherInvestments | 0 us-gaap_RealizedGainLossOnMarketableSecuritiesCostMethodInvestmentsAndOtherInvestments | 0 us-gaap_RealizedGainLossOnMarketableSecuritiesCostMethodInvestmentsAndOtherInvestments | 130,879 us-gaap_RealizedGainLossOnMarketableSecuritiesCostMethodInvestmentsAndOtherInvestments | (4,580)us-gaap_RealizedGainLossOnMarketableSecuritiesCostMethodInvestmentsAndOtherInvestments
Equity in earnings (loss) of nonconsolidated affiliates | (29)us-gaap_IncomeLossFromEquityMethodInvestments | 3,955 us-gaap_IncomeLossFromEquityMethodInvestments | (16)us-gaap_IncomeLossFromEquityMethodInvestments | (13,326)us-gaap_IncomeLossFromEquityMethodInvestments | (91,291)us-gaap_IncomeLossFromEquityMethodInvestments | 3,983 us-gaap_IncomeLossFromEquityMethodInvestments | 5,971 us-gaap_IncomeLossFromEquityMethodInvestments | 3,641 us-gaap_IncomeLossFromEquityMethodInvestments | (9,416)us-gaap_IncomeLossFromEquityMethodInvestments | (77,696)us-gaap_IncomeLossFromEquityMethodInvestments | 18,557 us-gaap_IncomeLossFromEquityMethodInvestments
Loss on extinguishment of debt | 12,912 us-gaap_GainsLossesOnExtinguishmentOfDebt | (4,840)us-gaap_GainsLossesOnExtinguishmentOfDebt | (47,503)us-gaap_GainsLossesOnExtinguishmentOfDebt | (3,916)us-gaap_GainsLossesOnExtinguishmentOfDebt | (83,980)us-gaap_GainsLossesOnExtinguishmentOfDebt | 0 us-gaap_GainsLossesOnExtinguishmentOfDebt | 0 us-gaap_GainsLossesOnExtinguishmentOfDebt | (3,888)us-gaap_GainsLossesOnExtinguishmentOfDebt | (43,347)us-gaap_GainsLossesOnExtinguishmentOfDebt | (87,868)us-gaap_GainsLossesOnExtinguishmentOfDebt | (254,723)us-gaap_GainsLossesOnExtinguishmentOfDebt
Other income (expense), net | (7,211)us-gaap_OtherNonoperatingIncomeExpense | 2,617 us-gaap_OtherNonoperatingIncomeExpense | 12,157 us-gaap_OtherNonoperatingIncomeExpense | 1,541 us-gaap_OtherNonoperatingIncomeExpense | (4,591)us-gaap_OtherNonoperatingIncomeExpense | 1,709 us-gaap_OtherNonoperatingIncomeExpense | (18,098)us-gaap_OtherNonoperatingIncomeExpense | (1,000)us-gaap_OtherNonoperatingIncomeExpense | 9,104 us-gaap_OtherNonoperatingIncomeExpense | (21,980)us-gaap_OtherNonoperatingIncomeExpense | 250 us-gaap_OtherNonoperatingIncomeExpense
Loss before income taxes | (83,819)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest | (83,448)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest | (172,400)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest | (364,002)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest | (265,400)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest | (165,974)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest | 31,484 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest | (305,444)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest | (703,669)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest | (705,334)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest | (719,469)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
Income tax benefit (expense) | 33,654 us-gaap_IncomeTaxExpenseBenefit | (24,376)us-gaap_IncomeTaxExpenseBenefit | 621 us-gaap_IncomeTaxExpenseBenefit | (68,388)us-gaap_IncomeTaxExpenseBenefit | (36,833)us-gaap_IncomeTaxExpenseBenefit | 73,802 us-gaap_IncomeTaxExpenseBenefit | (11,477)us-gaap_IncomeTaxExpenseBenefit | 96,325 us-gaap_IncomeTaxExpenseBenefit | (58,489)us-gaap_IncomeTaxExpenseBenefit | 121,817 us-gaap_IncomeTaxExpenseBenefit | 308,279 us-gaap_IncomeTaxExpenseBenefit
Consolidated net income (loss) | (50,165)us-gaap_ProfitLoss | (107,824)us-gaap_ProfitLoss | (171,779)us-gaap_ProfitLoss | (432,390)us-gaap_ProfitLoss | (302,233)us-gaap_ProfitLoss | (92,172)us-gaap_ProfitLoss | 20,007 us-gaap_ProfitLoss | (209,119)us-gaap_ProfitLoss | (762,158)us-gaap_ProfitLoss | (583,517)us-gaap_ProfitLoss | (411,190)us-gaap_ProfitLoss
Less amount attributable to noncontrolling interest | 17,923 us-gaap_NetIncomeLossAttributableToNoncontrollingInterest | 7,028 us-gaap_NetIncomeLossAttributableToNoncontrollingInterest | 14,852 us-gaap_NetIncomeLossAttributableToNoncontrollingInterest | (8,200)us-gaap_NetIncomeLossAttributableToNoncontrollingInterest | 6,994 us-gaap_NetIncomeLossAttributableToNoncontrollingInterest | 9,683 us-gaap_NetIncomeLossAttributableToNoncontrollingInterest | 12,805 us-gaap_NetIncomeLossAttributableToNoncontrollingInterest | (6,116)us-gaap_NetIncomeLossAttributableToNoncontrollingInterest | 31,603 us-gaap_NetIncomeLossAttributableToNoncontrollingInterest | 23,366 us-gaap_NetIncomeLossAttributableToNoncontrollingInterest | 13,289 us-gaap_NetIncomeLossAttributableToNoncontrollingInterest
Net income (loss) attributable to the Company | $ (68,088)us-gaap_NetIncomeLoss | $ (114,852)us-gaap_NetIncomeLoss | $ (186,631)us-gaap_NetIncomeLoss | $ (424,190)us-gaap_NetIncomeLoss | $ (309,227)us-gaap_NetIncomeLoss | $ (101,855)us-gaap_NetIncomeLoss | $ 7,202 us-gaap_NetIncomeLoss | $ (203,003)us-gaap_NetIncomeLoss | $ (793,761)us-gaap_NetIncomeLoss | $ (606,883)us-gaap_NetIncomeLoss | $ (424,479)us-gaap_NetIncomeLoss
Net loss attributable to the Company per common share: |  |  |  |  |  |  |  |  |  |  |
Basic | $ (0.81)us-gaap_EarningsPerShareBasic | $ (1.37)us-gaap_EarningsPerShareBasic | $ (2.22)us-gaap_EarningsPerShareBasic | $ (5.06)us-gaap_EarningsPerShareBasic | $ (3.7)us-gaap_EarningsPerShareBasic | $ (1.22)us-gaap_EarningsPerShareBasic | $ 0.09 us-gaap_EarningsPerShareBasic | $ (2.47)us-gaap_EarningsPerShareBasic | $ (9.46)us-gaap_EarningsPerShareBasic | $ (7.31)us-gaap_EarningsPerShareBasic | $ (5.23)us-gaap_EarningsPerShareBasic
Diluted | $ (0.81)us-gaap_EarningsPerShareDiluted | $ (1.37)us-gaap_EarningsPerShareDiluted | $ (2.22)us-gaap_EarningsPerShareDiluted | $ (5.06)us-gaap_EarningsPerShareDiluted | $ (3.7)us-gaap_EarningsPerShareDiluted | $ (1.22)us-gaap_EarningsPerShareDiluted | $ 0.09 us-gaap_EarningsPerShareDiluted | $ (2.47)us-gaap_EarningsPerShareDiluted | $ (9.46)us-gaap_EarningsPerShareDiluted | $ (7.31)us-gaap_EarningsPerShareDiluted | $ (5.23)us-gaap_EarningsPerShareDiluted

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