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Commitments, Contingencies And Guarantees (Narrative) (Detail)	Mar. 31, 2015 signs permits
Commitments And Contingencies [Line Items]
Digital modernization permits issued to Company	82cik0001400891_DigitalModernizationPermitsIssuedToCompany
Digital displays operating	77cik0001400891_DigitalDisplaysOperating
Conversion from static to digital	83cik0001400891_ConversionFromStaticToDigital

X

- Definition

Conversion From Static To Digital

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No definition available.

+ Details

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X

- Definition

Digital Displays Operating at the Time of the Ruling

+ References

No definition available.

+ Details

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Namespace Prefix:	cik0001400891_
Data Type:	xbrli:integerItemType
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X

- Definition

Digital Modernization Permits Issued To Company

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No definition available.

+ Details

Name:	cik0001400891_DigitalModernizationPermitsIssuedToCompany
Namespace Prefix:	cik0001400891_
Data Type:	xbrli:integerItemType
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- Details

Name:	us-gaap_LossContingenciesLineItems
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