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Preneed Cemetery Activities Preneed Cemetery Activities, Textuals (Details) (Cemetery [Member], USD $)
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Cemetery [Member]
     
Fair Value, Measurement with unobservable inputs, risk discount, high end of the range 0.00%sci_FairValueMeasurementWithUnobservableInputsRiskDiscountLowEndOfRange
/ us-gaap_StatementBusinessSegmentsAxis
= sci_CemeteryMember
   
Fair Value, Measurement with unobservable inputs, risk discount, high end of the range 20.00%sci_FairValueMeasurementWithUnobservableInputsRiskDiscountHighEndOfRange
/ us-gaap_StatementBusinessSegmentsAxis
= sci_CemeteryMember
   
Fair Value, Measurement with unobservable inputs, liquidity discount, low end of the range 0.00%sci_FairValueMeasurementWithUnobservableInputsLiquidityDiscountLowEndOfRange
/ us-gaap_StatementBusinessSegmentsAxis
= sci_CemeteryMember
   
Fair Value, Measurement with unobservable inputs, liquidity discount, high end of the range 10.00%sci_FairValueMeasurementWithUnobservableInputsLiquidityDiscountHighEndOfRange
/ us-gaap_StatementBusinessSegmentsAxis
= sci_CemeteryMember
   
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share, Unfunded Commitments $ 26,900,000us-gaap_FairValueInvestmentsEntitiesThatCalculateNetAssetValuePerShareUnfundedCommittments
/ us-gaap_StatementBusinessSegmentsAxis
= sci_CemeteryMember
   
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 48,200,000sci_InvestmentEarningsNet
/ us-gaap_StatementBusinessSegmentsAxis
= sci_CemeteryMember
39,000,000sci_InvestmentEarningsNet
/ us-gaap_StatementBusinessSegmentsAxis
= sci_CemeteryMember
27,700,000sci_InvestmentEarningsNet
/ us-gaap_StatementBusinessSegmentsAxis
= sci_CemeteryMember
Other than Temporary Impairment Losses, Investments, Portion Recognized in Earnings, Net $ 60,040,000us-gaap_OtherThanTemporaryImpairmentLossesInvestmentsPortionRecognizedInEarningsNet
/ us-gaap_StatementBusinessSegmentsAxis
= sci_CemeteryMember
$ 1,575,000us-gaap_OtherThanTemporaryImpairmentLossesInvestmentsPortionRecognizedInEarningsNet
/ us-gaap_StatementBusinessSegmentsAxis
= sci_CemeteryMember
$ 824,000us-gaap_OtherThanTemporaryImpairmentLossesInvestmentsPortionRecognizedInEarningsNet
/ us-gaap_StatementBusinessSegmentsAxis
= sci_CemeteryMember