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Schedule III - Supplementary Insurance Information (Details) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 12 Months Ended
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Dec. 31, 2011 | Dec. 31, 2013 | Dec. 31, 2012
Supplementary Insurance Information, by Segment [Line Items] |  |  |
Deferred acquisition costs, net | $ 0 us-gaap_SupplementaryInsuranceInformationDeferredPolicyAcquisitionCosts | $ 91,193 us-gaap_SupplementaryInsuranceInformationDeferredPolicyAcquisitionCosts | $ 45,383 us-gaap_SupplementaryInsuranceInformationDeferredPolicyAcquisitionCosts
Loss and loss adjustment expense reserves | 0 us-gaap_SupplementaryInsuranceInformationLiabilityForFuturePolicyBenefitsLossesClaimsAndLossExpenseReserves | 134,331 us-gaap_SupplementaryInsuranceInformationLiabilityForFuturePolicyBenefitsLossesClaimsAndLossExpenseReserves | 67,271 us-gaap_SupplementaryInsuranceInformationLiabilityForFuturePolicyBenefitsLossesClaimsAndLossExpenseReserves
Unearned premium | 0 us-gaap_SupplementaryInsuranceInformationUnearnedPremiums | 265,187 us-gaap_SupplementaryInsuranceInformationUnearnedPremiums | 93,893 us-gaap_SupplementaryInsuranceInformationUnearnedPremiums
Net premiums earned | 0 us-gaap_SupplementaryInsuranceInformationPremiumRevenue | 220,667 us-gaap_SupplementaryInsuranceInformationPremiumRevenue | 96,481 us-gaap_SupplementaryInsuranceInformationPremiumRevenue
Net investment income | 0 us-gaap_SupplementaryInsuranceInformationNetInvestmentIncome | 253,203 us-gaap_SupplementaryInsuranceInformationNetInvestmentIncome | 136,422 us-gaap_SupplementaryInsuranceInformationNetInvestmentIncome
Loss and loss adjustment expenses incurred, net | 0 us-gaap_SupplementaryInsuranceInformationAmortizationOfDeferredPolicyAcquisitionCosts | 139,812 us-gaap_SupplementaryInsuranceInformationAmortizationOfDeferredPolicyAcquisitionCosts | 80,306 us-gaap_SupplementaryInsuranceInformationAmortizationOfDeferredPolicyAcquisitionCosts
Amortization of deferred acquisition costs, net | 0 us-gaap_SupplementaryInsuranceInformationBenefitsClaimsLossesAndSettlementExpense | 67,944 us-gaap_SupplementaryInsuranceInformationBenefitsClaimsLossesAndSettlementExpense | 24,604 us-gaap_SupplementaryInsuranceInformationBenefitsClaimsLossesAndSettlementExpense
Other operating expenses | 1,130 us-gaap_SupplementaryInsuranceInformationOtherOperatingExpense | 33,036 us-gaap_SupplementaryInsuranceInformationOtherOperatingExpense | 27,376 us-gaap_SupplementaryInsuranceInformationOtherOperatingExpense
Net premiums written | 0 us-gaap_SupplementaryInsuranceInformationPremiumsWritten | 391,962 us-gaap_SupplementaryInsuranceInformationPremiumsWritten | 190,374 us-gaap_SupplementaryInsuranceInformationPremiumsWritten
Property and Casualty Reinsurance |  |  |
Supplementary Insurance Information, by Segment [Line Items] |  |  |
Deferred acquisition costs, net | 0 us-gaap_SupplementaryInsuranceInformationDeferredPolicyAcquisitionCosts / us-gaap_StatementBusinessSegmentsAxis = us-gaap_PropertyLiabilityAndCasualtyInsuranceSegmentMember | 91,141 us-gaap_SupplementaryInsuranceInformationDeferredPolicyAcquisitionCosts / us-gaap_StatementBusinessSegmentsAxis = us-gaap_PropertyLiabilityAndCasualtyInsuranceSegmentMember | 45,383 us-gaap_SupplementaryInsuranceInformationDeferredPolicyAcquisitionCosts / us-gaap_StatementBusinessSegmentsAxis = us-gaap_PropertyLiabilityAndCasualtyInsuranceSegmentMember
Loss and loss adjustment expense reserves | 0 us-gaap_SupplementaryInsuranceInformationLiabilityForFuturePolicyBenefitsLossesClaimsAndLossExpenseReserves / us-gaap_StatementBusinessSegmentsAxis = us-gaap_PropertyLiabilityAndCasualtyInsuranceSegmentMember | 134,221 us-gaap_SupplementaryInsuranceInformationLiabilityForFuturePolicyBenefitsLossesClaimsAndLossExpenseReserves / us-gaap_StatementBusinessSegmentsAxis = us-gaap_PropertyLiabilityAndCasualtyInsuranceSegmentMember | 67,271 us-gaap_SupplementaryInsuranceInformationLiabilityForFuturePolicyBenefitsLossesClaimsAndLossExpenseReserves / us-gaap_StatementBusinessSegmentsAxis = us-gaap_PropertyLiabilityAndCasualtyInsuranceSegmentMember
Unearned premium | 0 us-gaap_SupplementaryInsuranceInformationUnearnedPremiums / us-gaap_StatementBusinessSegmentsAxis = us-gaap_PropertyLiabilityAndCasualtyInsuranceSegmentMember | 264,898 us-gaap_SupplementaryInsuranceInformationUnearnedPremiums / us-gaap_StatementBusinessSegmentsAxis = us-gaap_PropertyLiabilityAndCasualtyInsuranceSegmentMember | 93,893 us-gaap_SupplementaryInsuranceInformationUnearnedPremiums / us-gaap_StatementBusinessSegmentsAxis = us-gaap_PropertyLiabilityAndCasualtyInsuranceSegmentMember
Net premiums earned | 0 us-gaap_SupplementaryInsuranceInformationPremiumRevenue / us-gaap_StatementBusinessSegmentsAxis = us-gaap_PropertyLiabilityAndCasualtyInsuranceSegmentMember | 212,607 us-gaap_SupplementaryInsuranceInformationPremiumRevenue / us-gaap_StatementBusinessSegmentsAxis = us-gaap_PropertyLiabilityAndCasualtyInsuranceSegmentMember | 96,481 us-gaap_SupplementaryInsuranceInformationPremiumRevenue / us-gaap_StatementBusinessSegmentsAxis = us-gaap_PropertyLiabilityAndCasualtyInsuranceSegmentMember
Net investment income | 0 us-gaap_SupplementaryInsuranceInformationNetInvestmentIncome / us-gaap_StatementBusinessSegmentsAxis = us-gaap_PropertyLiabilityAndCasualtyInsuranceSegmentMember | 0 us-gaap_SupplementaryInsuranceInformationNetInvestmentIncome / us-gaap_StatementBusinessSegmentsAxis = us-gaap_PropertyLiabilityAndCasualtyInsuranceSegmentMember | 0 us-gaap_SupplementaryInsuranceInformationNetInvestmentIncome / us-gaap_StatementBusinessSegmentsAxis = us-gaap_PropertyLiabilityAndCasualtyInsuranceSegmentMember
Loss and loss adjustment expenses incurred, net | 0 us-gaap_SupplementaryInsuranceInformationAmortizationOfDeferredPolicyAcquisitionCosts / us-gaap_StatementBusinessSegmentsAxis = us-gaap_PropertyLiabilityAndCasualtyInsuranceSegmentMember | 139,616 us-gaap_SupplementaryInsuranceInformationAmortizationOfDeferredPolicyAcquisitionCosts / us-gaap_StatementBusinessSegmentsAxis = us-gaap_PropertyLiabilityAndCasualtyInsuranceSegmentMember | 80,306 us-gaap_SupplementaryInsuranceInformationAmortizationOfDeferredPolicyAcquisitionCosts / us-gaap_StatementBusinessSegmentsAxis = us-gaap_PropertyLiabilityAndCasualtyInsuranceSegmentMember
Amortization of deferred acquisition costs, net | 0 us-gaap_SupplementaryInsuranceInformationBenefitsClaimsLossesAndSettlementExpense / us-gaap_StatementBusinessSegmentsAxis = us-gaap_PropertyLiabilityAndCasualtyInsuranceSegmentMember | 66,981 us-gaap_SupplementaryInsuranceInformationBenefitsClaimsLossesAndSettlementExpense / us-gaap_StatementBusinessSegmentsAxis = us-gaap_PropertyLiabilityAndCasualtyInsuranceSegmentMember | 24,604 us-gaap_SupplementaryInsuranceInformationBenefitsClaimsLossesAndSettlementExpense / us-gaap_StatementBusinessSegmentsAxis = us-gaap_PropertyLiabilityAndCasualtyInsuranceSegmentMember
Other operating expenses | 0 us-gaap_SupplementaryInsuranceInformationOtherOperatingExpense / us-gaap_StatementBusinessSegmentsAxis = us-gaap_PropertyLiabilityAndCasualtyInsuranceSegmentMember | 21,838 us-gaap_SupplementaryInsuranceInformationOtherOperatingExpense / us-gaap_StatementBusinessSegmentsAxis = us-gaap_PropertyLiabilityAndCasualtyInsuranceSegmentMember | 20,290 us-gaap_SupplementaryInsuranceInformationOtherOperatingExpense / us-gaap_StatementBusinessSegmentsAxis = us-gaap_PropertyLiabilityAndCasualtyInsuranceSegmentMember
Net premiums written | 0 us-gaap_SupplementaryInsuranceInformationPremiumsWritten / us-gaap_StatementBusinessSegmentsAxis = us-gaap_PropertyLiabilityAndCasualtyInsuranceSegmentMember | 383,613 us-gaap_SupplementaryInsuranceInformationPremiumsWritten / us-gaap_StatementBusinessSegmentsAxis = us-gaap_PropertyLiabilityAndCasualtyInsuranceSegmentMember | 190,374 us-gaap_SupplementaryInsuranceInformationPremiumsWritten / us-gaap_StatementBusinessSegmentsAxis = us-gaap_PropertyLiabilityAndCasualtyInsuranceSegmentMember
Catastrophe Risk Management |  |  |
Supplementary Insurance Information, by Segment [Line Items] |  |  |
Deferred acquisition costs, net | 0 us-gaap_SupplementaryInsuranceInformationDeferredPolicyAcquisitionCosts / us-gaap_StatementBusinessSegmentsAxis = tpre_CatastropheRiskManagementMember | 52 us-gaap_SupplementaryInsuranceInformationDeferredPolicyAcquisitionCosts / us-gaap_StatementBusinessSegmentsAxis = tpre_CatastropheRiskManagementMember | 0 us-gaap_SupplementaryInsuranceInformationDeferredPolicyAcquisitionCosts / us-gaap_StatementBusinessSegmentsAxis = tpre_CatastropheRiskManagementMember
Loss and loss adjustment expense reserves | 0 us-gaap_SupplementaryInsuranceInformationLiabilityForFuturePolicyBenefitsLossesClaimsAndLossExpenseReserves / us-gaap_StatementBusinessSegmentsAxis = tpre_CatastropheRiskManagementMember | 110 us-gaap_SupplementaryInsuranceInformationLiabilityForFuturePolicyBenefitsLossesClaimsAndLossExpenseReserves / us-gaap_StatementBusinessSegmentsAxis = tpre_CatastropheRiskManagementMember | 0 us-gaap_SupplementaryInsuranceInformationLiabilityForFuturePolicyBenefitsLossesClaimsAndLossExpenseReserves / us-gaap_StatementBusinessSegmentsAxis = tpre_CatastropheRiskManagementMember
Unearned premium | 0 us-gaap_SupplementaryInsuranceInformationUnearnedPremiums / us-gaap_StatementBusinessSegmentsAxis = tpre_CatastropheRiskManagementMember | 289 us-gaap_SupplementaryInsuranceInformationUnearnedPremiums / us-gaap_StatementBusinessSegmentsAxis = tpre_CatastropheRiskManagementMember | 0 us-gaap_SupplementaryInsuranceInformationUnearnedPremiums / us-gaap_StatementBusinessSegmentsAxis = tpre_CatastropheRiskManagementMember
Net premiums earned | 0 us-gaap_SupplementaryInsuranceInformationPremiumRevenue / us-gaap_StatementBusinessSegmentsAxis = tpre_CatastropheRiskManagementMember | 8,060 us-gaap_SupplementaryInsuranceInformationPremiumRevenue / us-gaap_StatementBusinessSegmentsAxis = tpre_CatastropheRiskManagementMember | 0 us-gaap_SupplementaryInsuranceInformationPremiumRevenue / us-gaap_StatementBusinessSegmentsAxis = tpre_CatastropheRiskManagementMember
Net investment income | 0 us-gaap_SupplementaryInsuranceInformationNetInvestmentIncome / us-gaap_StatementBusinessSegmentsAxis = tpre_CatastropheRiskManagementMember | 4,421 us-gaap_SupplementaryInsuranceInformationNetInvestmentIncome / us-gaap_StatementBusinessSegmentsAxis = tpre_CatastropheRiskManagementMember | 0 us-gaap_SupplementaryInsuranceInformationNetInvestmentIncome / us-gaap_StatementBusinessSegmentsAxis = tpre_CatastropheRiskManagementMember
Loss and loss adjustment expenses incurred, net | 0 us-gaap_SupplementaryInsuranceInformationAmortizationOfDeferredPolicyAcquisitionCosts / us-gaap_StatementBusinessSegmentsAxis = tpre_CatastropheRiskManagementMember | 196 us-gaap_SupplementaryInsuranceInformationAmortizationOfDeferredPolicyAcquisitionCosts / us-gaap_StatementBusinessSegmentsAxis = tpre_CatastropheRiskManagementMember | 0 us-gaap_SupplementaryInsuranceInformationAmortizationOfDeferredPolicyAcquisitionCosts / us-gaap_StatementBusinessSegmentsAxis = tpre_CatastropheRiskManagementMember
Amortization of deferred acquisition costs, net | 0 us-gaap_SupplementaryInsuranceInformationBenefitsClaimsLossesAndSettlementExpense / us-gaap_StatementBusinessSegmentsAxis = tpre_CatastropheRiskManagementMember | 963 us-gaap_SupplementaryInsuranceInformationBenefitsClaimsLossesAndSettlementExpense / us-gaap_StatementBusinessSegmentsAxis = tpre_CatastropheRiskManagementMember | 0 us-gaap_SupplementaryInsuranceInformationBenefitsClaimsLossesAndSettlementExpense / us-gaap_StatementBusinessSegmentsAxis = tpre_CatastropheRiskManagementMember
Other operating expenses | 0 us-gaap_SupplementaryInsuranceInformationOtherOperatingExpense / us-gaap_StatementBusinessSegmentsAxis = tpre_CatastropheRiskManagementMember | 3,852 us-gaap_SupplementaryInsuranceInformationOtherOperatingExpense / us-gaap_StatementBusinessSegmentsAxis = tpre_CatastropheRiskManagementMember | 1,534 us-gaap_SupplementaryInsuranceInformationOtherOperatingExpense / us-gaap_StatementBusinessSegmentsAxis = tpre_CatastropheRiskManagementMember
Net premiums written | 0 us-gaap_SupplementaryInsuranceInformationPremiumsWritten / us-gaap_StatementBusinessSegmentsAxis = tpre_CatastropheRiskManagementMember | 8,349 us-gaap_SupplementaryInsuranceInformationPremiumsWritten / us-gaap_StatementBusinessSegmentsAxis = tpre_CatastropheRiskManagementMember | 0 us-gaap_SupplementaryInsuranceInformationPremiumsWritten / us-gaap_StatementBusinessSegmentsAxis = tpre_CatastropheRiskManagementMember
Corporate |  |  |
Supplementary Insurance Information, by Segment [Line Items] |  |  |
Deferred acquisition costs, net | 0 us-gaap_SupplementaryInsuranceInformationDeferredPolicyAcquisitionCosts / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateMember | 0 us-gaap_SupplementaryInsuranceInformationDeferredPolicyAcquisitionCosts / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateMember | 0 us-gaap_SupplementaryInsuranceInformationDeferredPolicyAcquisitionCosts / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateMember
Loss and loss adjustment expense reserves | 0 us-gaap_SupplementaryInsuranceInformationLiabilityForFuturePolicyBenefitsLossesClaimsAndLossExpenseReserves / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateMember | 0 us-gaap_SupplementaryInsuranceInformationLiabilityForFuturePolicyBenefitsLossesClaimsAndLossExpenseReserves / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateMember | 0 us-gaap_SupplementaryInsuranceInformationLiabilityForFuturePolicyBenefitsLossesClaimsAndLossExpenseReserves / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateMember
Unearned premium | 0 us-gaap_SupplementaryInsuranceInformationUnearnedPremiums / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateMember | 0 us-gaap_SupplementaryInsuranceInformationUnearnedPremiums / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateMember | 0 us-gaap_SupplementaryInsuranceInformationUnearnedPremiums / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateMember
Net premiums earned | 0 us-gaap_SupplementaryInsuranceInformationPremiumRevenue / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateMember | 0 us-gaap_SupplementaryInsuranceInformationPremiumRevenue / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateMember | 0 us-gaap_SupplementaryInsuranceInformationPremiumRevenue / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateMember
Net investment income | 0 us-gaap_SupplementaryInsuranceInformationNetInvestmentIncome / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateMember | 248,782 us-gaap_SupplementaryInsuranceInformationNetInvestmentIncome / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateMember | 136,422 us-gaap_SupplementaryInsuranceInformationNetInvestmentIncome / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateMember
Loss and loss adjustment expenses incurred, net | 0 us-gaap_SupplementaryInsuranceInformationAmortizationOfDeferredPolicyAcquisitionCosts / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateMember | 0 us-gaap_SupplementaryInsuranceInformationAmortizationOfDeferredPolicyAcquisitionCosts / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateMember | 0 us-gaap_SupplementaryInsuranceInformationAmortizationOfDeferredPolicyAcquisitionCosts / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateMember
Amortization of deferred acquisition costs, net | 0 us-gaap_SupplementaryInsuranceInformationBenefitsClaimsLossesAndSettlementExpense / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateMember | 0 us-gaap_SupplementaryInsuranceInformationBenefitsClaimsLossesAndSettlementExpense / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateMember | 0 us-gaap_SupplementaryInsuranceInformationBenefitsClaimsLossesAndSettlementExpense / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateMember
Other operating expenses | 1,130 us-gaap_SupplementaryInsuranceInformationOtherOperatingExpense / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateMember | 7,346 us-gaap_SupplementaryInsuranceInformationOtherOperatingExpense / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateMember | 5,552 us-gaap_SupplementaryInsuranceInformationOtherOperatingExpense / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateMember
Net premiums written | $ 0 us-gaap_SupplementaryInsuranceInformationPremiumsWritten / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateMember | $ 0 us-gaap_SupplementaryInsuranceInformationPremiumsWritten / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateMember | $ 0 us-gaap_SupplementaryInsuranceInformationPremiumsWritten / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateMember

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- Definition Amount of amortization of deferred policy acquisition costs recognized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 16 -Article 12 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 235 -Section S99 -Paragraph 1 -Subparagraph (SX 210.12-16) -URI http://asc.fasb.org/extlink&oid=6588446&loc=d3e574960-122915 + Details
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- Definition Amount of insurance benefits, claims, losses and settlement expenses incurred. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 16 -Article 12 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 235 -Section S99 -Paragraph 1 -Subparagraph (SX 210.12-16) -URI http://asc.fasb.org/extlink&oid=6588446&loc=d3e574960-122915 + Details
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- Definition Net amount of deferred policy acquisition costs capitalized on contracts remaining in force on the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 16 -Article 12 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 235 -Section S99 -Paragraph 1 -Subparagraph (SX 210.12-16) -URI http://asc.fasb.org/extlink&oid=6588446&loc=d3e574960-122915 + Details
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- Definition Amount of reserves for future policy claims payable and loss expenses to be incurred. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 16 -Article 12 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 235 -Section S99 -Paragraph 1 -Subparagraph (SX 210.12-16) -URI http://asc.fasb.org/extlink&oid=6588446&loc=d3e574960-122915 + Details
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