XML 434 R74.htm IDEA: XBRL DOCUMENT v2.4.1.9
Income Taxes - Narrative (Details) (USD $)
In Millions, except Per Share data, unless otherwise specified
 3 Months Ended 9 Months Ended 12 Months Ended 6 Months Ended
Sep. 30, 2014
Sep. 30, 2014
Sep. 30, 2013
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2014
Dec. 31, 2010
Operating Loss Carryforwards [Line Items]                
Cash paid for income taxes   $ 31.4us-gaap_IncomeTaxesPaidNet $ 75.3us-gaap_IncomeTaxesPaidNet $ 112.8us-gaap_IncomeTaxesPaidNet $ 96.5us-gaap_IncomeTaxesPaidNet $ 50.9us-gaap_IncomeTaxesPaidNet    
Unrecognized Tax Benefits 1.2us-gaap_UnrecognizedTaxBenefits 1.2us-gaap_UnrecognizedTaxBenefits   4.0us-gaap_UnrecognizedTaxBenefits 4.9us-gaap_UnrecognizedTaxBenefits 5.4us-gaap_UnrecognizedTaxBenefits   1.9us-gaap_UnrecognizedTaxBenefits
Operating Loss Carryforwards       47.2us-gaap_OperatingLossCarryforwards        
Operating Loss Carryforwards, Not Subject to Expiration       22.0out_OperatingLossCarryforwardsNotSubjecttoExpiration        
Effective income tax rate, excluding noncash benefit from REIT conversion   39.30%out_EffectiveIncomeTaxRateReconciliationPercentExcludingNonCashBenefitResultingFromREITConversion 43.50%out_EffectiveIncomeTaxRateReconciliationPercentExcludingNonCashBenefitResultingFromREITConversion          
Unrecognized Tax Benefits that Would Impact Effective Tax Rate 0.8us-gaap_UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate 0.8us-gaap_UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate   3.4us-gaap_UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate        
Deferred Tax Benefit Due To REIT Conversion 232.3out_DeferredTaxBenefitDueToREITConversion 232.3out_DeferredTaxBenefitDueToREITConversion            
Capital Distribution Per Share $ 0.37us-gaap_CommonStockDividendsPerShareCashPaid              
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent   35.00%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate            
Deferred Tax Assets, Valuation Allowance       10.1us-gaap_DeferredTaxAssetsValuationAllowance 8.0us-gaap_DeferredTaxAssetsValuationAllowance      
CBS Corp.                
Related Party Transaction [Line Items]                
Unrecognized Tax Benefit Transferred to Parent   2.1out_UnrecognizedTaxBenefitTransferredtoParent
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= us-gaap_MajorityShareholderMember		            
Subsequent Event                
Operating Loss Carryforwards [Line Items]                
Nondeductible Excise Tax Rate             4.00%out_NondeductibleExciseTaxRate
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember		  
Minimum                
Operating Loss Carryforwards [Line Items]                
Operating Loss Carryforwards, Expiration Date       Jan. 01, 2014        
Minimum | Subsequent Event                
Operating Loss Carryforwards [Line Items]                
Percent Of REIT Taxable Income To Be Distributed             90.00%out_PercentOfREITTaxableIncomeToBeDistributed
/ us-gaap_RangeAxis
= us-gaap_MinimumMember
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember		  
Maximum                
Operating Loss Carryforwards [Line Items]                
Operating Loss Carryforwards, Expiration Date       Dec. 31, 2027        
Maximum | Subsequent Event                
Operating Loss Carryforwards [Line Items]                
Percent Of REIT Taxable Income To Be Distributed             100.00%out_PercentOfREITTaxableIncomeToBeDistributed
/ us-gaap_RangeAxis
= us-gaap_MaximumMember
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember		  
Other Assets                
Operating Loss Carryforwards [Line Items]                
Deferred Tax Assets, Net, Noncurrent         $ 2.9us-gaap_DeferredTaxAssetsLiabilitiesNetNoncurrent
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_OtherAssetsMember