Annual report pursuant to Section 13 and 15(d)

Income Taxes (Details)

v2.4.1.9
Income Taxes (Details) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Current:      
Federal $ 110.6us-gaap_CurrentFederalTaxExpenseBenefit $ 119.2us-gaap_CurrentFederalTaxExpenseBenefit $ 141.5us-gaap_CurrentFederalTaxExpenseBenefit
State and local 7.6us-gaap_CurrentStateAndLocalTaxExpenseBenefit 9.3us-gaap_CurrentStateAndLocalTaxExpenseBenefit 4.6us-gaap_CurrentStateAndLocalTaxExpenseBenefit
Foreign 3.3us-gaap_CurrentForeignTaxExpenseBenefit 2.5us-gaap_CurrentForeignTaxExpenseBenefit 1.7us-gaap_CurrentForeignTaxExpenseBenefit
Current income tax expense 121.5us-gaap_CurrentIncomeTaxExpenseBenefit 131.0us-gaap_CurrentIncomeTaxExpenseBenefit 147.8us-gaap_CurrentIncomeTaxExpenseBenefit
Deferred:      
Federal 14.9us-gaap_DeferredFederalIncomeTaxExpenseBenefit 0.5us-gaap_DeferredFederalIncomeTaxExpenseBenefit (21.8)us-gaap_DeferredFederalIncomeTaxExpenseBenefit
State and local 4.4us-gaap_DeferredStateAndLocalIncomeTaxExpenseBenefit 7.9us-gaap_DeferredStateAndLocalIncomeTaxExpenseBenefit 4.4us-gaap_DeferredStateAndLocalIncomeTaxExpenseBenefit
Deferred income tax expense 19.3us-gaap_DeferredIncomeTaxExpenseBenefit 8.4us-gaap_DeferredIncomeTaxExpenseBenefit (17.4)us-gaap_DeferredIncomeTaxExpenseBenefit
Income tax expense $ 140.8us-gaap_IncomeTaxExpenseBenefit $ 139.4us-gaap_IncomeTaxExpenseBenefit $ 130.4us-gaap_IncomeTaxExpenseBenefit
Starz Media      
Ownership percentage 75.00%us-gaap_SubsidiaryOrEquityMethodInvesteeCumulativePercentageOwnershipAfterAllTransactions
/ dei_LegalEntityAxis
= strza_StarzMediaMember