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Preneed Funeral Activities Preneed Funeral Activities, Textuals (Details) (USD $)
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Insurance Commissions and Fees $ 123,000,000us-gaap_InsuranceCommissionsAndFees $ 106,500,000us-gaap_InsuranceCommissionsAndFees $ 94,000,000us-gaap_InsuranceCommissionsAndFees
Funeral [Member]      
Fair Value, Measurement with unobservable inputs, risk discount, low end of the range 0.00%sci_FairValueMeasurementWithUnobservableInputsRiskDiscountLowEndOfRange
/ us-gaap_StatementBusinessSegmentsAxis
= sci_FuneralMember
   
Fair Value, Measurement with unobservable inputs, risk discount, high end of the range 20.00%sci_FairValueMeasurementWithUnobservableInputsRiskDiscountHighEndOfRange
/ us-gaap_StatementBusinessSegmentsAxis
= sci_FuneralMember
   
Fair Value, Measurement with unobservable inputs, liquidity discount, high end of the range 0.00%sci_FairValueMeasurementWithUnobservableInputsLiquidityDiscountLowEndOfRange
/ us-gaap_StatementBusinessSegmentsAxis
= sci_FuneralMember
   
Fair Value, Measurement with unobservable inputs, liquidity discount, high end of the range 10.00%sci_FairValueMeasurementWithUnobservableInputsLiquidityDiscountHighEndOfRange
/ us-gaap_StatementBusinessSegmentsAxis
= sci_FuneralMember
   
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share, Unfunded Commitments 25,400,000us-gaap_FairValueInvestmentsEntitiesThatCalculateNetAssetValuePerShareUnfundedCommittments
/ us-gaap_StatementBusinessSegmentsAxis
= sci_FuneralMember
   
Underlying assets liquidation range, minimum 2 years    
Underlying assets liquidation range, maximum 10 years    
Available-for-sale securities, estimated maturity date, minimum 2015    
Available-for-sale securities, estimated maturity date, maximum 2044    
Investment Earnings, Net 62,800,000sci_InvestmentEarningsNet
/ us-gaap_StatementBusinessSegmentsAxis
= sci_FuneralMember
48,500,000sci_InvestmentEarningsNet
/ us-gaap_StatementBusinessSegmentsAxis
= sci_FuneralMember
38,700,000sci_InvestmentEarningsNet
/ us-gaap_StatementBusinessSegmentsAxis
= sci_FuneralMember
Other than Temporary Impairment Losses, Investments, Portion Recognized in Earnings, Net $ 41,846,000us-gaap_OtherThanTemporaryImpairmentLossesInvestmentsPortionRecognizedInEarningsNet
/ us-gaap_StatementBusinessSegmentsAxis
= sci_FuneralMember
$ 829,000us-gaap_OtherThanTemporaryImpairmentLossesInvestmentsPortionRecognizedInEarningsNet
/ us-gaap_StatementBusinessSegmentsAxis
= sci_FuneralMember
$ 781,000us-gaap_OtherThanTemporaryImpairmentLossesInvestmentsPortionRecognizedInEarningsNet
/ us-gaap_StatementBusinessSegmentsAxis
= sci_FuneralMember