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Commitment and Contingencies - Narrative (Details) $ in Millions | Jun. 30, 2015 USD ($)
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Commitments and Contingencies Disclosure [Abstract] |
Outstanding letters of credit and surety bonds | $ 115.7

X
- Definition Letters of Credit and Surety Bonds, Amount Outstanding + References No definition available. + Details
Name: | out_LettersofCreditandSuretyBondsAmountOutstanding
Namespace Prefix: | out_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- References No definition available. + Details
Name: | us-gaap_CommitmentsAndContingenciesDisclosureAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration