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Cemetery Perpetual Care Trusts Schedule of Available-for-sale Securities (Details) (Cemetery Perpetual Care [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 | $ 1,207,563 us-gaap_AvailableForSaleSecuritiesAmortizedCost | $ 1,266,428 us-gaap_AvailableForSaleSecuritiesAmortizedCost
Available-for-sale Securities, Gross Unrealized Gains | 19,424 us-gaap_AvailableForSaleSecuritiesGrossUnrealizedGains | 101,437 us-gaap_AvailableForSaleSecuritiesGrossUnrealizedGains
Available-for-sale Securities, Gross Unrealized Losses | (34,021)us-gaap_AvailableForSaleSecuritiesGrossUnrealizedLoss | (15,614)us-gaap_AvailableForSaleSecuritiesGrossUnrealizedLoss
Available-for-sale Securities, Fair Value | 1,192,966 sci_AvailableForSaleSecuritiesFairValue | 1,352,251 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 | 794 us-gaap_AvailableForSaleSecuritiesAmortizedCost / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_USTreasurySecuritiesMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryPerpetualCareMember | 1,588 us-gaap_AvailableForSaleSecuritiesAmortizedCost / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_USTreasurySecuritiesMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryPerpetualCareMember
Available-for-sale Securities, Gross Unrealized Gains | 40 us-gaap_AvailableForSaleSecuritiesGrossUnrealizedGains / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_USTreasurySecuritiesMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryPerpetualCareMember | 9 us-gaap_AvailableForSaleSecuritiesGrossUnrealizedGains / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_USTreasurySecuritiesMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryPerpetualCareMember
Available-for-sale Securities, Gross Unrealized Losses | (4)us-gaap_AvailableForSaleSecuritiesGrossUnrealizedLoss / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_USTreasurySecuritiesMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryPerpetualCareMember | (14)us-gaap_AvailableForSaleSecuritiesGrossUnrealizedLoss / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_USTreasurySecuritiesMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryPerpetualCareMember
Available-for-sale Securities, Fair Value | 830 sci_AvailableForSaleSecuritiesFairValue / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_USTreasurySecuritiesMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryPerpetualCareMember | 1,583 sci_AvailableForSaleSecuritiesFairValue / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_USTreasurySecuritiesMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryPerpetualCareMember
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 | 31,993 us-gaap_AvailableForSaleSecuritiesAmortizedCost / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_ForeignGovernmentDebtSecuritiesMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryPerpetualCareMember | 28,487 us-gaap_AvailableForSaleSecuritiesAmortizedCost / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_ForeignGovernmentDebtSecuritiesMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryPerpetualCareMember
Available-for-sale Securities, Gross Unrealized Gains | 442 us-gaap_AvailableForSaleSecuritiesGrossUnrealizedGains / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_ForeignGovernmentDebtSecuritiesMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryPerpetualCareMember | 301 us-gaap_AvailableForSaleSecuritiesGrossUnrealizedGains / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_ForeignGovernmentDebtSecuritiesMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryPerpetualCareMember
Available-for-sale Securities, Gross Unrealized Losses | (233)us-gaap_AvailableForSaleSecuritiesGrossUnrealizedLoss / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_ForeignGovernmentDebtSecuritiesMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryPerpetualCareMember | (459)us-gaap_AvailableForSaleSecuritiesGrossUnrealizedLoss / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_ForeignGovernmentDebtSecuritiesMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryPerpetualCareMember
Available-for-sale Securities, Fair Value | 32,202 sci_AvailableForSaleSecuritiesFairValue / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_ForeignGovernmentDebtSecuritiesMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryPerpetualCareMember | 28,329 sci_AvailableForSaleSecuritiesFairValue / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_ForeignGovernmentDebtSecuritiesMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryPerpetualCareMember
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 | 16,762 us-gaap_AvailableForSaleSecuritiesAmortizedCost / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_CorporateDebtSecuritiesMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryPerpetualCareMember | 43,191 us-gaap_AvailableForSaleSecuritiesAmortizedCost / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_CorporateDebtSecuritiesMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryPerpetualCareMember
Available-for-sale Securities, Gross Unrealized Gains | 344 us-gaap_AvailableForSaleSecuritiesGrossUnrealizedGains / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_CorporateDebtSecuritiesMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryPerpetualCareMember | 312 us-gaap_AvailableForSaleSecuritiesGrossUnrealizedGains / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_CorporateDebtSecuritiesMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryPerpetualCareMember
Available-for-sale Securities, Gross Unrealized Losses | (210)us-gaap_AvailableForSaleSecuritiesGrossUnrealizedLoss / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_CorporateDebtSecuritiesMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryPerpetualCareMember | (263)us-gaap_AvailableForSaleSecuritiesGrossUnrealizedLoss / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_CorporateDebtSecuritiesMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryPerpetualCareMember
Available-for-sale Securities, Fair Value | 16,896 sci_AvailableForSaleSecuritiesFairValue / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_CorporateDebtSecuritiesMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryPerpetualCareMember | 43,240 sci_AvailableForSaleSecuritiesFairValue / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_CorporateDebtSecuritiesMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryPerpetualCareMember
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 | 910 us-gaap_AvailableForSaleSecuritiesAmortizedCost / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_ResidentialMortgageBackedSecuritiesMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryPerpetualCareMember | 4,256 us-gaap_AvailableForSaleSecuritiesAmortizedCost / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_ResidentialMortgageBackedSecuritiesMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryPerpetualCareMember
Available-for-sale Securities, Gross Unrealized Gains | 15 us-gaap_AvailableForSaleSecuritiesGrossUnrealizedGains / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_ResidentialMortgageBackedSecuritiesMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryPerpetualCareMember | 14 us-gaap_AvailableForSaleSecuritiesGrossUnrealizedGains / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_ResidentialMortgageBackedSecuritiesMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryPerpetualCareMember
Available-for-sale Securities, Gross Unrealized Losses | (6)us-gaap_AvailableForSaleSecuritiesGrossUnrealizedLoss / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_ResidentialMortgageBackedSecuritiesMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryPerpetualCareMember | (19)us-gaap_AvailableForSaleSecuritiesGrossUnrealizedLoss / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_ResidentialMortgageBackedSecuritiesMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryPerpetualCareMember
Available-for-sale Securities, Fair Value | 919 sci_AvailableForSaleSecuritiesFairValue / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_ResidentialMortgageBackedSecuritiesMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryPerpetualCareMember | 4,251 sci_AvailableForSaleSecuritiesFairValue / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_ResidentialMortgageBackedSecuritiesMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryPerpetualCareMember
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 | 661 us-gaap_AvailableForSaleSecuritiesAmortizedCost / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_AssetBackedSecuritiesMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryPerpetualCareMember | 3,006 us-gaap_AvailableForSaleSecuritiesAmortizedCost / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_AssetBackedSecuritiesMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryPerpetualCareMember
Available-for-sale Securities, Gross Unrealized Gains | 10 us-gaap_AvailableForSaleSecuritiesGrossUnrealizedGains / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_AssetBackedSecuritiesMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryPerpetualCareMember | 5 us-gaap_AvailableForSaleSecuritiesGrossUnrealizedGains / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_AssetBackedSecuritiesMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryPerpetualCareMember
Available-for-sale Securities, Gross Unrealized Losses | (4)us-gaap_AvailableForSaleSecuritiesGrossUnrealizedLoss / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_AssetBackedSecuritiesMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryPerpetualCareMember | (11)us-gaap_AvailableForSaleSecuritiesGrossUnrealizedLoss / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_AssetBackedSecuritiesMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryPerpetualCareMember
Available-for-sale Securities, Fair Value | 667 sci_AvailableForSaleSecuritiesFairValue / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_AssetBackedSecuritiesMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryPerpetualCareMember | 3,000 sci_AvailableForSaleSecuritiesFairValue / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_AssetBackedSecuritiesMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryPerpetualCareMember
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 | 4,439 us-gaap_AvailableForSaleSecuritiesAmortizedCost / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = sci_PreferredStockSecuritiesMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryPerpetualCareMember | 25,946 us-gaap_AvailableForSaleSecuritiesAmortizedCost / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = sci_PreferredStockSecuritiesMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryPerpetualCareMember
Available-for-sale Securities, Gross Unrealized Gains | 60 us-gaap_AvailableForSaleSecuritiesGrossUnrealizedGains / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = sci_PreferredStockSecuritiesMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryPerpetualCareMember | 192 us-gaap_AvailableForSaleSecuritiesGrossUnrealizedGains / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = sci_PreferredStockSecuritiesMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryPerpetualCareMember
Available-for-sale Securities, Gross Unrealized Losses | (12)us-gaap_AvailableForSaleSecuritiesGrossUnrealizedLoss / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = sci_PreferredStockSecuritiesMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryPerpetualCareMember | (252)us-gaap_AvailableForSaleSecuritiesGrossUnrealizedLoss / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = sci_PreferredStockSecuritiesMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryPerpetualCareMember
Available-for-sale Securities, Fair Value | 4,487 sci_AvailableForSaleSecuritiesFairValue / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = sci_PreferredStockSecuritiesMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryPerpetualCareMember | 25,886 sci_AvailableForSaleSecuritiesFairValue / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = sci_PreferredStockSecuritiesMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryPerpetualCareMember
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 | 225,129 us-gaap_AvailableForSaleSecuritiesAmortizedCost / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = sci_UsCommonStockSecuritiesMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryPerpetualCareMember | 231,093 us-gaap_AvailableForSaleSecuritiesAmortizedCost / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = sci_UsCommonStockSecuritiesMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryPerpetualCareMember
Available-for-sale Securities, Gross Unrealized Gains | 9,340 us-gaap_AvailableForSaleSecuritiesGrossUnrealizedGains / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = sci_UsCommonStockSecuritiesMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryPerpetualCareMember | 53,782 us-gaap_AvailableForSaleSecuritiesGrossUnrealizedGains / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = sci_UsCommonStockSecuritiesMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryPerpetualCareMember
Available-for-sale Securities, Gross Unrealized Losses | (4,881)us-gaap_AvailableForSaleSecuritiesGrossUnrealizedLoss / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = sci_UsCommonStockSecuritiesMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryPerpetualCareMember | (2,087)us-gaap_AvailableForSaleSecuritiesGrossUnrealizedLoss / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = sci_UsCommonStockSecuritiesMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryPerpetualCareMember
Available-for-sale Securities, Fair Value | 229,588 sci_AvailableForSaleSecuritiesFairValue / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = sci_UsCommonStockSecuritiesMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryPerpetualCareMember | 282,788 sci_AvailableForSaleSecuritiesFairValue / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = sci_UsCommonStockSecuritiesMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryPerpetualCareMember
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 | 7,419 us-gaap_AvailableForSaleSecuritiesAmortizedCost / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = sci_CanadaCommonStockSecuritiesMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryPerpetualCareMember | 8,846 us-gaap_AvailableForSaleSecuritiesAmortizedCost / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = sci_CanadaCommonStockSecuritiesMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryPerpetualCareMember
Available-for-sale Securities, Gross Unrealized Gains | 2,737 us-gaap_AvailableForSaleSecuritiesGrossUnrealizedGains / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = sci_CanadaCommonStockSecuritiesMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryPerpetualCareMember | 2,222 us-gaap_AvailableForSaleSecuritiesGrossUnrealizedGains / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = sci_CanadaCommonStockSecuritiesMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryPerpetualCareMember
Available-for-sale Securities, Gross Unrealized Losses | (596)us-gaap_AvailableForSaleSecuritiesGrossUnrealizedLoss / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = sci_CanadaCommonStockSecuritiesMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryPerpetualCareMember | (623)us-gaap_AvailableForSaleSecuritiesGrossUnrealizedLoss / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = sci_CanadaCommonStockSecuritiesMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryPerpetualCareMember
Available-for-sale Securities, Fair Value | 9,560 sci_AvailableForSaleSecuritiesFairValue / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = sci_CanadaCommonStockSecuritiesMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryPerpetualCareMember | 10,445 sci_AvailableForSaleSecuritiesFairValue / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = sci_CanadaCommonStockSecuritiesMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryPerpetualCareMember
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 | 8,102 us-gaap_AvailableForSaleSecuritiesAmortizedCost / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = sci_OtherInternationalCommonStockSecuritiesMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryPerpetualCareMember | 20,671 us-gaap_AvailableForSaleSecuritiesAmortizedCost / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = sci_OtherInternationalCommonStockSecuritiesMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryPerpetualCareMember
Available-for-sale Securities, Gross Unrealized Gains | 90 us-gaap_AvailableForSaleSecuritiesGrossUnrealizedGains / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = sci_OtherInternationalCommonStockSecuritiesMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryPerpetualCareMember | 1,319 us-gaap_AvailableForSaleSecuritiesGrossUnrealizedGains / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = sci_OtherInternationalCommonStockSecuritiesMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryPerpetualCareMember
Available-for-sale Securities, Gross Unrealized Losses | (399)us-gaap_AvailableForSaleSecuritiesGrossUnrealizedLoss / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = sci_OtherInternationalCommonStockSecuritiesMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryPerpetualCareMember | (167)us-gaap_AvailableForSaleSecuritiesGrossUnrealizedLoss / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = sci_OtherInternationalCommonStockSecuritiesMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryPerpetualCareMember
Available-for-sale Securities, Fair Value | 7,793 sci_AvailableForSaleSecuritiesFairValue / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = sci_OtherInternationalCommonStockSecuritiesMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryPerpetualCareMember | 21,823 sci_AvailableForSaleSecuritiesFairValue / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = sci_OtherInternationalCommonStockSecuritiesMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryPerpetualCareMember
Fair Value, Inputs, Level 1 [Member] | Equity Funds [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Available-for-sale Securities, Amortized Cost Basis | 17,310 us-gaap_AvailableForSaleSecuritiesAmortizedCost / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_EquityFundsMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryPerpetualCareMember | 41,270 us-gaap_AvailableForSaleSecuritiesAmortizedCost / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_EquityFundsMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryPerpetualCareMember
Available-for-sale Securities, Gross Unrealized Gains | 3,264 us-gaap_AvailableForSaleSecuritiesGrossUnrealizedGains / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_EquityFundsMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryPerpetualCareMember | 5,693 us-gaap_AvailableForSaleSecuritiesGrossUnrealizedGains / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_EquityFundsMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryPerpetualCareMember
Available-for-sale Securities, Gross Unrealized Losses | (93)us-gaap_AvailableForSaleSecuritiesGrossUnrealizedLoss / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_EquityFundsMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryPerpetualCareMember | (35)us-gaap_AvailableForSaleSecuritiesGrossUnrealizedLoss / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_EquityFundsMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryPerpetualCareMember
Available-for-sale Securities, Fair Value | 20,481 sci_AvailableForSaleSecuritiesFairValue / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_EquityFundsMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryPerpetualCareMember | 46,928 sci_AvailableForSaleSecuritiesFairValue / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_EquityFundsMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryPerpetualCareMember
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 | 846,230 us-gaap_AvailableForSaleSecuritiesAmortizedCost / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_FixedIncomeFundsMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryPerpetualCareMember | 819,244 us-gaap_AvailableForSaleSecuritiesAmortizedCost / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_FixedIncomeFundsMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryPerpetualCareMember
Available-for-sale Securities, Gross Unrealized Gains | 1,580 us-gaap_AvailableForSaleSecuritiesGrossUnrealizedGains / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_FixedIncomeFundsMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryPerpetualCareMember | 35,963 us-gaap_AvailableForSaleSecuritiesGrossUnrealizedGains / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_FixedIncomeFundsMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryPerpetualCareMember
Available-for-sale Securities, Gross Unrealized Losses | (14,263)us-gaap_AvailableForSaleSecuritiesGrossUnrealizedLoss / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_FixedIncomeFundsMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryPerpetualCareMember | (2,598)us-gaap_AvailableForSaleSecuritiesGrossUnrealizedLoss / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_FixedIncomeFundsMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryPerpetualCareMember
Available-for-sale Securities, Fair Value | 833,547 sci_AvailableForSaleSecuritiesFairValue / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_FixedIncomeFundsMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryPerpetualCareMember | 852,609 sci_AvailableForSaleSecuritiesFairValue / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_FixedIncomeFundsMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryPerpetualCareMember
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 | 34,288 us-gaap_AvailableForSaleSecuritiesAmortizedCost / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_PrivateEquityFundsMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryPerpetualCareMember | 28,309 us-gaap_AvailableForSaleSecuritiesAmortizedCost / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_PrivateEquityFundsMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryPerpetualCareMember
Available-for-sale Securities, Gross Unrealized Gains | 408 us-gaap_AvailableForSaleSecuritiesGrossUnrealizedGains / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_PrivateEquityFundsMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryPerpetualCareMember | 472 us-gaap_AvailableForSaleSecuritiesGrossUnrealizedGains / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_PrivateEquityFundsMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryPerpetualCareMember
Available-for-sale Securities, Gross Unrealized Losses | (10,788)us-gaap_AvailableForSaleSecuritiesGrossUnrealizedLoss / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_PrivateEquityFundsMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryPerpetualCareMember | (9,002)us-gaap_AvailableForSaleSecuritiesGrossUnrealizedLoss / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_PrivateEquityFundsMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryPerpetualCareMember
Available-for-sale Securities, Fair Value | 23,908 sci_AvailableForSaleSecuritiesFairValue / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_PrivateEquityFundsMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryPerpetualCareMember | 19,779 sci_AvailableForSaleSecuritiesFairValue / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_PrivateEquityFundsMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryPerpetualCareMember
Fair Value, Inputs, Level 3 [Member] | Other Investments [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Available-for-sale Securities, Amortized Cost Basis | 13,526 us-gaap_AvailableForSaleSecuritiesAmortizedCost / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_OtherInvestmentsMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryPerpetualCareMember | 10,521 us-gaap_AvailableForSaleSecuritiesAmortizedCost / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_OtherInvestmentsMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryPerpetualCareMember
Available-for-sale Securities, Gross Unrealized Gains | 1,094 us-gaap_AvailableForSaleSecuritiesGrossUnrealizedGains / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_OtherInvestmentsMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryPerpetualCareMember | 1,153 us-gaap_AvailableForSaleSecuritiesGrossUnrealizedGains / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_OtherInvestmentsMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryPerpetualCareMember
Available-for-sale Securities, Gross Unrealized Losses | (2,532)us-gaap_AvailableForSaleSecuritiesGrossUnrealizedLoss / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_OtherInvestmentsMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryPerpetualCareMember | (84)us-gaap_AvailableForSaleSecuritiesGrossUnrealizedLoss / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_OtherInvestmentsMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryPerpetualCareMember
Available-for-sale Securities, Fair Value | $ 12,088 sci_AvailableForSaleSecuritiesFairValue / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_OtherInvestmentsMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryPerpetualCareMember | $ 11,590 sci_AvailableForSaleSecuritiesFairValue / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_OtherInvestmentsMember / us-gaap_StatementBusinessSegmentsAxis = sci_CemeteryPerpetualCareMember

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