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Commitments, Contingencies And Guarantees (Narrative) (Detail) (USD $) | 12 Months Ended
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Dec. 31, 2014 permits signs | Dec. 31, 2013 | Dec. 31, 2012
Commitments And Contingencies [Line Items] |  |  |
Rent expense | $ 1,170,000,000 us-gaap_OperatingLeasesRentExpenseNet | $ 1,160,000,000 us-gaap_OperatingLeasesRentExpenseNet | $ 1,140,000,000 us-gaap_OperatingLeasesRentExpenseNet
Digital modernization permits issued to Company | 82 cik0001400891_DigitalModernizationPermitsIssuedToCompany |  |
Digital displays operating | 77 cik0001400891_DigitalDisplaysOperating |  |
Conversion from static to digital | 83 cik0001400891_ConversionFromStaticToDigital |  |
Performance Requirements [Member] |  |  |
Commitments And Contingencies [Line Items] |  |  |
Estimated Maximum Contingency | $ 30,000,000 us-gaap_LossContingencyRangeOfPossibleLossMaximum / us-gaap_LossContingenciesByNatureOfContingencyAxis = cik0001400891_PerformanceRequirementsMember |  |

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- Definition Conversion From Static To Digital + References No definition available. + Details
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- Definition Digital Displays Operating at the Time of the Ruling + References No definition available. + Details
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- Definition Digital Modernization Permits Issued To Company + References No definition available. + Details
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- Details
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- Definition The estimated maximum amount of possible loss from the contingency. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14435-108349 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 9 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14557-108349 + Details
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- Definition Rental expense for the reporting period incurred under operating leases, including minimum and any contingent rent expense, net of related sublease income. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6453985&loc=d3e41499-112717 + Details
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- Details
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