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Income Taxes (Components of Deferred Tax Assets (Liabilities)) (Details) (USD $)
In Millions, unless otherwise specified
Dec. 31, 2014
Dec. 31, 2013
Deferred tax assets:    
Accrued liabilities $ 24.4us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities $ 28.9us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities
Accrued compensation 43.0us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeCompensation 36.6us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeCompensation
Allowance for doubtful accounts 18.7us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAllowanceForDoubtfulAccounts 19.8us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAllowanceForDoubtfulAccounts
Interest limitation 115.3quad_DeferredTaxAssetsInterestLimitation 153.6quad_DeferredTaxAssetsInterestLimitation
Pension, postretirement and workers compensation benefits 98.2us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsOther 80.0us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsOther
Net operating loss and other tax carryforwards 151.6quad_DeferredTaxAssetsOperatingLossCarryforawardsAndTaxCreditCarryforwardsTotal 152.3quad_DeferredTaxAssetsOperatingLossCarryforawardsAndTaxCreditCarryforwardsTotal
Other 24.8us-gaap_DeferredTaxAssetsOther 24.7us-gaap_DeferredTaxAssetsOther
Total deferred tax assets 476.0us-gaap_DeferredTaxAssetsGross 495.9us-gaap_DeferredTaxAssetsGross
Valuation allowance (156.1)us-gaap_DeferredTaxAssetsValuationAllowance [1] (151.5)us-gaap_DeferredTaxAssetsValuationAllowance [1]
Net deferred tax assets 319.9us-gaap_DeferredTaxAssetsNet 344.4us-gaap_DeferredTaxAssetsNet
Deferred tax liabilities:    
Property, plant and equipment (359.0)us-gaap_DeferredTaxLiabilitiesPropertyPlantAndEquipment (362.5)us-gaap_DeferredTaxLiabilitiesPropertyPlantAndEquipment
Goodwill and intangible assets (41.2)us-gaap_DeferredTaxLiabilitiesGoodwillAndIntangibleAssets (67.4)us-gaap_DeferredTaxLiabilitiesGoodwillAndIntangibleAssets
Investment in U.S. subsidiaries (240.9)us-gaap_DeferredTaxLiabilitiesInvestmentInNoncontrolledAffiliates (245.1)us-gaap_DeferredTaxLiabilitiesInvestmentInNoncontrolledAffiliates
Other (14.8)us-gaap_DeferredTaxLiabilitiesOther (16.5)us-gaap_DeferredTaxLiabilitiesOther
Total deferred tax liabilities (655.9)us-gaap_DeferredTaxLiabilities (691.5)us-gaap_DeferredTaxLiabilities
Net deferred tax liabilities (336.0)us-gaap_DeferredTaxAssetsLiabilitiesNet (347.1)us-gaap_DeferredTaxAssetsLiabilitiesNet
Deferred Tax Liabilities, Classification    
Current net deferred tax asset 48.4us-gaap_DeferredTaxAssetsLiabilitiesNetCurrent 48.1us-gaap_DeferredTaxAssetsLiabilitiesNetCurrent
Non-current net deferred tax liability (384.4)us-gaap_DeferredTaxAssetsLiabilitiesNetNoncurrent (395.2)us-gaap_DeferredTaxAssetsLiabilitiesNetNoncurrent
Net deferred tax liabilities (336.0)us-gaap_DeferredTaxAssetsLiabilitiesNet (347.1)us-gaap_DeferredTaxAssetsLiabilitiesNet
Tax credit carryforward 44.8us-gaap_TaxCreditCarryforwardAmount  
Tax credit carryforward, not subject to expiration 30.9quad_TaxCreditCarryforwardAmountNotSubjectToExpiration  
Foreign Tax Authority [Member]    
Deferred tax assets:    
Valuation allowance (56.2)us-gaap_DeferredTaxAssetsValuationAllowance
/ us-gaap_IncomeTaxAuthorityAxis
= us-gaap_ForeignCountryMember		  
Deferred Tax Liabilities, Classification    
Net operating loss carryforwards 136.6us-gaap_OperatingLossCarryforwards
/ us-gaap_IncomeTaxAuthorityAxis
= us-gaap_ForeignCountryMember		  
Net operating loss carryforwards, not subject to expiration 41.9us-gaap_DeferredTaxAssetsOperatingLossCarryforwardsNotSubjectToExpiration
/ us-gaap_IncomeTaxAuthorityAxis
= us-gaap_ForeignCountryMember		  
Domestic Tax Authority [Member]    
Deferred tax assets:    
Valuation allowance (55.3)us-gaap_DeferredTaxAssetsValuationAllowance
/ us-gaap_IncomeTaxAuthorityAxis
= us-gaap_DomesticCountryMember		  
State and Local Jurisdiction [Member]    
Deferred tax assets:    
Valuation allowance (44.6)us-gaap_DeferredTaxAssetsValuationAllowance
/ us-gaap_IncomeTaxAuthorityAxis
= us-gaap_StateAndLocalJurisdictionMember		  
Deferred Tax Liabilities, Classification    
Net operating loss carryforwards $ 679.2us-gaap_OperatingLossCarryforwards
/ us-gaap_IncomeTaxAuthorityAxis
= us-gaap_StateAndLocalJurisdictionMember		  
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