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Preneed Cemetery Activities Schedule of Available-for-sale Securities (Details) (Cemetery [Member], USD $) In Thousands, unless otherwise specified | 12 Months Ended
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Dec. 31, 2014 | Dec. 31, 2013
Schedule of Available-for-sale Securities [Line Items] |  |
Available-for-sale Securities, Amortized Cost Basis | $ 1,411,166 us-gaap_AvailableForSaleSecuritiesAmortizedCost | $ 1,376,118 us-gaap_AvailableForSaleSecuritiesAmortizedCost
Available-for-sale Securities, Gross Unrealized Gains | 38,316 us-gaap_AvailableForSaleSecuritiesGrossUnrealizedGains | 227,890 us-gaap_AvailableForSaleSecuritiesGrossUnrealizedGains
Available-for-sale Securities, Gross Unrealized Losses | (45,184)us-gaap_AvailableForSaleSecuritiesGrossUnrealizedLoss | (54,826)us-gaap_AvailableForSaleSecuritiesGrossUnrealizedLoss
Available-for-sale Securities, Fair Value | 1,404,298 sci_AvailableForSaleSecuritiesFairValue | 1,549,182 sci_AvailableForSaleSecuritiesFairValue
Fair Value, Inputs, Level 2 [Member] | US Treasury Securities [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Available-for-sale Securities, Amortized Cost Basis | 63,447 us-gaap_AvailableForSaleSecuritiesAmortizedCost / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_USTreasurySecuritiesMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryMember | 113,293 us-gaap_AvailableForSaleSecuritiesAmortizedCost / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_USTreasurySecuritiesMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryMember
Available-for-sale Securities, Gross Unrealized Gains | 257 us-gaap_AvailableForSaleSecuritiesGrossUnrealizedGains / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_USTreasurySecuritiesMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryMember | 1,714 us-gaap_AvailableForSaleSecuritiesGrossUnrealizedGains / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_USTreasurySecuritiesMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryMember
Available-for-sale Securities, Gross Unrealized Losses | (605)us-gaap_AvailableForSaleSecuritiesGrossUnrealizedLoss / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_USTreasurySecuritiesMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryMember | (8,876)us-gaap_AvailableForSaleSecuritiesGrossUnrealizedLoss / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_USTreasurySecuritiesMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryMember
Available-for-sale Securities, Fair Value | 63,099 sci_AvailableForSaleSecuritiesFairValue / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_USTreasurySecuritiesMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryMember | 106,131 sci_AvailableForSaleSecuritiesFairValue / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_USTreasurySecuritiesMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryMember
Fair Value, Inputs, Level 2 [Member] | Foreign Government Debt Securities [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Available-for-sale Securities, Amortized Cost Basis | 21,687 us-gaap_AvailableForSaleSecuritiesAmortizedCost / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_ForeignGovernmentDebtSecuritiesMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryMember | 17,073 us-gaap_AvailableForSaleSecuritiesAmortizedCost / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_ForeignGovernmentDebtSecuritiesMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryMember
Available-for-sale Securities, Gross Unrealized Gains | 261 us-gaap_AvailableForSaleSecuritiesGrossUnrealizedGains / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_ForeignGovernmentDebtSecuritiesMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryMember | 170 us-gaap_AvailableForSaleSecuritiesGrossUnrealizedGains / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_ForeignGovernmentDebtSecuritiesMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryMember
Available-for-sale Securities, Gross Unrealized Losses | (134)us-gaap_AvailableForSaleSecuritiesGrossUnrealizedLoss / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_ForeignGovernmentDebtSecuritiesMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryMember | (261)us-gaap_AvailableForSaleSecuritiesGrossUnrealizedLoss / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_ForeignGovernmentDebtSecuritiesMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryMember
Available-for-sale Securities, Fair Value | 21,814 sci_AvailableForSaleSecuritiesFairValue / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_ForeignGovernmentDebtSecuritiesMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryMember | 16,982 sci_AvailableForSaleSecuritiesFairValue / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_ForeignGovernmentDebtSecuritiesMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryMember
Fair Value, Inputs, Level 2 [Member] | Corporate Debt Securities [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Available-for-sale Securities, Amortized Cost Basis | 8,725 us-gaap_AvailableForSaleSecuritiesAmortizedCost / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_CorporateDebtSecuritiesMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryMember | 48,838 us-gaap_AvailableForSaleSecuritiesAmortizedCost / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_CorporateDebtSecuritiesMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryMember
Available-for-sale Securities, Gross Unrealized Gains | 122 us-gaap_AvailableForSaleSecuritiesGrossUnrealizedGains / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_CorporateDebtSecuritiesMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryMember | 5,262 us-gaap_AvailableForSaleSecuritiesGrossUnrealizedGains / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_CorporateDebtSecuritiesMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryMember
Available-for-sale Securities, Gross Unrealized Losses | (116)us-gaap_AvailableForSaleSecuritiesGrossUnrealizedLoss / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_CorporateDebtSecuritiesMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryMember | (646)us-gaap_AvailableForSaleSecuritiesGrossUnrealizedLoss / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_CorporateDebtSecuritiesMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryMember
Available-for-sale Securities, Fair Value | 8,731 sci_AvailableForSaleSecuritiesFairValue / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_CorporateDebtSecuritiesMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryMember | 53,454 sci_AvailableForSaleSecuritiesFairValue / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_CorporateDebtSecuritiesMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryMember
Fair Value, Inputs, Level 2 [Member] | Residential Mortgage Backed Securities [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Available-for-sale Securities, Amortized Cost Basis | 111 us-gaap_AvailableForSaleSecuritiesAmortizedCost / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_ResidentialMortgageBackedSecuritiesMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryMember | 406 us-gaap_AvailableForSaleSecuritiesAmortizedCost / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_ResidentialMortgageBackedSecuritiesMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryMember
Available-for-sale Securities, Gross Unrealized Gains | 3 us-gaap_AvailableForSaleSecuritiesGrossUnrealizedGains / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_ResidentialMortgageBackedSecuritiesMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryMember | 2 us-gaap_AvailableForSaleSecuritiesGrossUnrealizedGains / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_ResidentialMortgageBackedSecuritiesMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryMember
Available-for-sale Securities, Gross Unrealized Losses | (1)us-gaap_AvailableForSaleSecuritiesGrossUnrealizedLoss / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_ResidentialMortgageBackedSecuritiesMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryMember | (2)us-gaap_AvailableForSaleSecuritiesGrossUnrealizedLoss / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_ResidentialMortgageBackedSecuritiesMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryMember
Available-for-sale Securities, Fair Value | 113 sci_AvailableForSaleSecuritiesFairValue / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_ResidentialMortgageBackedSecuritiesMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryMember | 406 sci_AvailableForSaleSecuritiesFairValue / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_ResidentialMortgageBackedSecuritiesMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryMember
Fair Value, Inputs, Level 2 [Member] | Asset-backed Securities [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Available-for-sale Securities, Amortized Cost Basis | 170 us-gaap_AvailableForSaleSecuritiesAmortizedCost / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_AssetBackedSecuritiesMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryMember | 3,336 us-gaap_AvailableForSaleSecuritiesAmortizedCost / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_AssetBackedSecuritiesMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryMember
Available-for-sale Securities, Gross Unrealized Gains | 16 us-gaap_AvailableForSaleSecuritiesGrossUnrealizedGains / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_AssetBackedSecuritiesMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryMember | 0 us-gaap_AvailableForSaleSecuritiesGrossUnrealizedGains / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_AssetBackedSecuritiesMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryMember
Available-for-sale Securities, Gross Unrealized Losses | 0 us-gaap_AvailableForSaleSecuritiesGrossUnrealizedLoss / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_AssetBackedSecuritiesMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryMember | (13)us-gaap_AvailableForSaleSecuritiesGrossUnrealizedLoss / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_AssetBackedSecuritiesMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryMember
Available-for-sale Securities, Fair Value | 186 sci_AvailableForSaleSecuritiesFairValue / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_AssetBackedSecuritiesMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryMember | 3,323 sci_AvailableForSaleSecuritiesFairValue / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_AssetBackedSecuritiesMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryMember
Fair Value, Inputs, Level 2 [Member] | Preferred Stock securities [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Available-for-sale Securities, Amortized Cost Basis | 10 us-gaap_AvailableForSaleSecuritiesAmortizedCost / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = sci_PreferredStockSecuritiesMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryMember | 16,654 us-gaap_AvailableForSaleSecuritiesAmortizedCost / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = sci_PreferredStockSecuritiesMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryMember
Available-for-sale Securities, Gross Unrealized Gains | 1 us-gaap_AvailableForSaleSecuritiesGrossUnrealizedGains / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = sci_PreferredStockSecuritiesMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryMember | 1,106 us-gaap_AvailableForSaleSecuritiesGrossUnrealizedGains / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = sci_PreferredStockSecuritiesMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryMember
Available-for-sale Securities, Gross Unrealized Losses | 0 us-gaap_AvailableForSaleSecuritiesGrossUnrealizedLoss / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = sci_PreferredStockSecuritiesMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryMember | (123)us-gaap_AvailableForSaleSecuritiesGrossUnrealizedLoss / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = sci_PreferredStockSecuritiesMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryMember
Available-for-sale Securities, Fair Value | 11 sci_AvailableForSaleSecuritiesFairValue / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = sci_PreferredStockSecuritiesMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryMember | 17,637 sci_AvailableForSaleSecuritiesFairValue / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = sci_PreferredStockSecuritiesMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryMember
Fair Value, Inputs, Level 1 [Member] | US Common Stock Securities [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Available-for-sale Securities, Amortized Cost Basis | 557,955 us-gaap_AvailableForSaleSecuritiesAmortizedCost / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = sci_UsCommonStockSecuritiesMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryMember | 423,524 us-gaap_AvailableForSaleSecuritiesAmortizedCost / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = sci_UsCommonStockSecuritiesMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryMember
Available-for-sale Securities, Gross Unrealized Gains | 22,746 us-gaap_AvailableForSaleSecuritiesGrossUnrealizedGains / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = sci_UsCommonStockSecuritiesMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryMember | 147,258 us-gaap_AvailableForSaleSecuritiesGrossUnrealizedGains / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = sci_UsCommonStockSecuritiesMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryMember
Available-for-sale Securities, Gross Unrealized Losses | (11,706)us-gaap_AvailableForSaleSecuritiesGrossUnrealizedLoss / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = sci_UsCommonStockSecuritiesMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryMember | (3,231)us-gaap_AvailableForSaleSecuritiesGrossUnrealizedLoss / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = sci_UsCommonStockSecuritiesMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryMember
Available-for-sale Securities, Fair Value | 568,995 sci_AvailableForSaleSecuritiesFairValue / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = sci_UsCommonStockSecuritiesMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryMember | 567,551 sci_AvailableForSaleSecuritiesFairValue / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = sci_UsCommonStockSecuritiesMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryMember
Fair Value, Inputs, Level 1 [Member] | Canada Common Stock Securities [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Available-for-sale Securities, Amortized Cost Basis | 10,962 us-gaap_AvailableForSaleSecuritiesAmortizedCost / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = sci_CanadaCommonStockSecuritiesMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryMember | 15,361 us-gaap_AvailableForSaleSecuritiesAmortizedCost / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = sci_CanadaCommonStockSecuritiesMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryMember
Available-for-sale Securities, Gross Unrealized Gains | 5,011 us-gaap_AvailableForSaleSecuritiesGrossUnrealizedGains / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = sci_CanadaCommonStockSecuritiesMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryMember | 4,063 us-gaap_AvailableForSaleSecuritiesGrossUnrealizedGains / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = sci_CanadaCommonStockSecuritiesMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryMember
Available-for-sale Securities, Gross Unrealized Losses | (841)us-gaap_AvailableForSaleSecuritiesGrossUnrealizedLoss / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = sci_CanadaCommonStockSecuritiesMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryMember | (935)us-gaap_AvailableForSaleSecuritiesGrossUnrealizedLoss / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = sci_CanadaCommonStockSecuritiesMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryMember
Available-for-sale Securities, Fair Value | 15,132 sci_AvailableForSaleSecuritiesFairValue / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = sci_CanadaCommonStockSecuritiesMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryMember | 18,489 sci_AvailableForSaleSecuritiesFairValue / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = sci_CanadaCommonStockSecuritiesMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryMember
Fair Value, Inputs, Level 1 [Member] | Other International Common Stock Securities [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Available-for-sale Securities, Amortized Cost Basis | 55,632 us-gaap_AvailableForSaleSecuritiesAmortizedCost / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = sci_OtherInternationalCommonStockSecuritiesMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryMember | 44,017 us-gaap_AvailableForSaleSecuritiesAmortizedCost / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = sci_OtherInternationalCommonStockSecuritiesMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryMember
Available-for-sale Securities, Gross Unrealized Gains | 1,605 us-gaap_AvailableForSaleSecuritiesGrossUnrealizedGains / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = sci_OtherInternationalCommonStockSecuritiesMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryMember | 10,079 us-gaap_AvailableForSaleSecuritiesGrossUnrealizedGains / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = sci_OtherInternationalCommonStockSecuritiesMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryMember
Available-for-sale Securities, Gross Unrealized Losses | (2,395)us-gaap_AvailableForSaleSecuritiesGrossUnrealizedLoss / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = sci_OtherInternationalCommonStockSecuritiesMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryMember | (200)us-gaap_AvailableForSaleSecuritiesGrossUnrealizedLoss / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = sci_OtherInternationalCommonStockSecuritiesMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryMember
Available-for-sale Securities, Fair Value | 54,842 sci_AvailableForSaleSecuritiesFairValue / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = sci_OtherInternationalCommonStockSecuritiesMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryMember | 53,896 sci_AvailableForSaleSecuritiesFairValue / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = sci_OtherInternationalCommonStockSecuritiesMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryMember
Fair Value, Inputs, Level 1 [Member] | Equity Funds [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Available-for-sale Securities, Amortized Cost Basis | 344,443 us-gaap_AvailableForSaleSecuritiesAmortizedCost / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_EquityFundsMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryMember | 325,927 us-gaap_AvailableForSaleSecuritiesAmortizedCost / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_EquityFundsMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryMember
Available-for-sale Securities, Gross Unrealized Gains | 4,244 us-gaap_AvailableForSaleSecuritiesGrossUnrealizedGains / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_EquityFundsMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryMember | 49,428 us-gaap_AvailableForSaleSecuritiesGrossUnrealizedGains / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_EquityFundsMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryMember
Available-for-sale Securities, Gross Unrealized Losses | (18,430)us-gaap_AvailableForSaleSecuritiesGrossUnrealizedLoss / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_EquityFundsMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryMember | (1,704)us-gaap_AvailableForSaleSecuritiesGrossUnrealizedLoss / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_EquityFundsMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryMember
Available-for-sale Securities, Fair Value | 330,257 sci_AvailableForSaleSecuritiesFairValue / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_EquityFundsMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryMember | 373,651 sci_AvailableForSaleSecuritiesFairValue / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_EquityFundsMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryMember
Fair Value, Inputs, Level 1 [Member] | Fixed Income Funds [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Available-for-sale Securities, Amortized Cost Basis | 314,600 us-gaap_AvailableForSaleSecuritiesAmortizedCost / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_FixedIncomeFundsMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryMember | 337,986 us-gaap_AvailableForSaleSecuritiesAmortizedCost / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_FixedIncomeFundsMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryMember
Available-for-sale Securities, Gross Unrealized Gains | 679 us-gaap_AvailableForSaleSecuritiesGrossUnrealizedGains / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_FixedIncomeFundsMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryMember | 5,236 us-gaap_AvailableForSaleSecuritiesGrossUnrealizedGains / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_FixedIncomeFundsMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryMember
Available-for-sale Securities, Gross Unrealized Losses | (4,702)us-gaap_AvailableForSaleSecuritiesGrossUnrealizedLoss / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_FixedIncomeFundsMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryMember | (33,649)us-gaap_AvailableForSaleSecuritiesGrossUnrealizedLoss / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_FixedIncomeFundsMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryMember
Available-for-sale Securities, Fair Value | 310,577 sci_AvailableForSaleSecuritiesFairValue / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_FixedIncomeFundsMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryMember | 309,573 sci_AvailableForSaleSecuritiesFairValue / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_FixedIncomeFundsMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryMember
Fair Value, Inputs, Level 3 [Member] | Private Equity Funds [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Available-for-sale Securities, Amortized Cost Basis | 32,342 us-gaap_AvailableForSaleSecuritiesAmortizedCost / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_PrivateEquityFundsMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryMember | 28,625 us-gaap_AvailableForSaleSecuritiesAmortizedCost / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_PrivateEquityFundsMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryMember
Available-for-sale Securities, Gross Unrealized Gains | 3,185 us-gaap_AvailableForSaleSecuritiesGrossUnrealizedGains / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_PrivateEquityFundsMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryMember | 3,372 us-gaap_AvailableForSaleSecuritiesGrossUnrealizedGains / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_PrivateEquityFundsMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryMember
Available-for-sale Securities, Gross Unrealized Losses | (6,183)us-gaap_AvailableForSaleSecuritiesGrossUnrealizedLoss / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_PrivateEquityFundsMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryMember | (5,153)us-gaap_AvailableForSaleSecuritiesGrossUnrealizedLoss / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_PrivateEquityFundsMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryMember
Available-for-sale Securities, Fair Value | 29,344 sci_AvailableForSaleSecuritiesFairValue / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_PrivateEquityFundsMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryMember | 26,844 sci_AvailableForSaleSecuritiesFairValue / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_PrivateEquityFundsMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryMember
Fair Value, Inputs, Level 3 [Member] | Other Investments [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Available-for-sale Securities, Amortized Cost Basis | 1,082 us-gaap_AvailableForSaleSecuritiesAmortizedCost / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_OtherInvestmentsMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryMember | 1,078 us-gaap_AvailableForSaleSecuritiesAmortizedCost / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_OtherInvestmentsMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryMember
Available-for-sale Securities, Gross Unrealized Gains | 186 us-gaap_AvailableForSaleSecuritiesGrossUnrealizedGains / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_OtherInvestmentsMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryMember | 200 us-gaap_AvailableForSaleSecuritiesGrossUnrealizedGains / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_OtherInvestmentsMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryMember
Available-for-sale Securities, Gross Unrealized Losses | (71)us-gaap_AvailableForSaleSecuritiesGrossUnrealizedLoss / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_OtherInvestmentsMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryMember | (33)us-gaap_AvailableForSaleSecuritiesGrossUnrealizedLoss / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_OtherInvestmentsMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryMember
Available-for-sale Securities, Fair Value | $ 1,197 sci_AvailableForSaleSecuritiesFairValue / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_OtherInvestmentsMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryMember | $ 1,245 sci_AvailableForSaleSecuritiesFairValue / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_OtherInvestmentsMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryMember

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