$SPNT
SiriusPoint Ltd Stock $spnt

$spnt Overview Financials Valuation SEC Filings Company Website

2020 Q3 Form 10-Q Financial Statement

#000157601820000162 Filed on November 05, 2020

Income Statement

Concept	2020 Q3	2019 Q3
Revenue	$263.7M	$200.1M
YoY Change	31.78%	60.86%
Cost Of Revenue
YoY Change
Gross Profit
YoY Change
Gross Profit Margin
Selling, General & Admin	$21.30M	$9.200M
YoY Change	131.52%	-3.16%
% of Gross Profit
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$54.82M	$118.3M
YoY Change	-53.65%	189.59%
% of Gross Profit
Operating Expenses	$186.3M	$218.3M
YoY Change	-14.66%	61.7%
Operating Profit
YoY Change
Interest Expense	$2.100M	$2.074M
YoY Change	1.25%	0.0%
% of Operating Profit
Other Income/Expense, Net
YoY Change
Pretax Income	$69.40M	-$15.31M
YoY Change	-553.24%	14.37%
Income Tax	$700.0K	-$213.0K
% Of Pretax Income	1.01%
Net Earnings	$68.70M	-$15.10M
YoY Change	-555.0%	13.69%
Net Earnings / Revenue	26.05%	-7.55%
Basic Earnings Per Share	$0.74	-$0.16
Diluted Earnings Per Share	$0.73	-$0.16
COMMON SHARES
Basic Shares Outstanding	92.61M shares	91.90M shares
Diluted Shares Outstanding	92.97M shares	91.90M shares

Balance Sheet

Concept	2020 Q3	2019 Q3
SHORT-TERM ASSETS
Cash & Short-Term Investments
YoY Change
Cash & Equivalents	$513.8M	$693.1M
Short-Term Investments
Other Short-Term Assets
YoY Change
Inventory
Prepaid Expenses
Receivables
Other Receivables
Total Short-Term Assets
YoY Change
LONG-TERM ASSETS
Property, Plant & Equipment
YoY Change
Goodwill
YoY Change
Intangibles
YoY Change
Long-Term Investments	$1.059B	$1.042B
YoY Change	1.63%	-44.37%
Other Assets	$1.102B	$817.0M
YoY Change	34.88%	40.62%
Total Long-Term Assets
YoY Change
TOTAL ASSETS
Total Short-Term Assets
Total Long-Term Assets
Total Assets	$3.534B	$3.439B
YoY Change	2.78%	1.47%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$14.00M	$15.00M
YoY Change	-6.67%	66.67%
Accrued Expenses
YoY Change
Deferred Revenue
YoY Change
Short-Term Debt	$0.00	$0.00
YoY Change
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities	$15.00M	$16.00M
YoY Change	-6.25%	60.0%
LONG-TERM LIABILITIES
Long-Term Debt	$114.0M	$114.0M
YoY Change	0.0%	0.0%
Other Long-Term Liabilities	$171.0M	$174.0M
YoY Change	-1.72%	2.35%
Total Long-Term Liabilities	$285.0M	$288.0M
YoY Change	-1.04%	1.41%
TOTAL LIABILITIES
Total Short-Term Liabilities	$15.00M	$16.00M
Total Long-Term Liabilities	$285.0M	$288.0M
Total Liabilities	$2.106B	$2.055B
YoY Change	2.47%	9.26%
SHAREHOLDERS EQUITY
Retained Earnings	$486.1M	$447.2M
YoY Change	8.69%	-22.14%
Common Stock	$9.531M	$9.422M
YoY Change	1.16%	0.05%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$1.428B	$1.384B
YoY Change
Total Liabilities & Shareholders Equity	$3.534B	$3.439B
YoY Change	2.78%	1.47%

Cashflow Statement

Concept	2020 Q3	2019 Q3
OPERATING ACTIVITIES
Net Income	$68.70M	-$15.10M
YoY Change	-555.0%	13.69%
Depreciation, Depletion And Amortization	$54.82M	$118.3M
YoY Change	-53.65%	189.59%
Cash From Operating Activities	$14.90M	-$1.100M
YoY Change	-1454.55%	-112.36%
INVESTING ACTIVITIES
Capital Expenditures
YoY Change
Acquisitions
YoY Change
Other Investing Activities	$138.7M	$747.0M
YoY Change	-81.43%	663.02%
Cash From Investing Activities	$138.7M	$747.0M
YoY Change	-81.43%	663.02%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-10.20M	13.80M
YoY Change	-173.91%	-121.8%
NET CHANGE
Cash From Operating Activities	14.90M	-1.100M
Cash From Investing Activities	138.7M	747.0M
Cash From Financing Activities	-10.20M	13.80M
Net Change In Cash	143.4M	759.7M
YoY Change	-81.12%	1646.44%
FREE CASH FLOW
Cash From Operating Activities	$14.90M	-$1.100M
Capital Expenditures
Free Cash Flow
YoY Change

Facts In Submission

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	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2020
	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	Q3
	dei	Amendment Flag AmendmentFlag	false
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	dei	Document Type DocumentType	10-Q
	dei	Document Quarterly Report DocumentQuarterlyReport	true
	dei	Document Period End Date DocumentPeriodEndDate	2020-09-30
	dei	Document Transition Report DocumentTransitionReport	false
	dei	Entity File Number EntityFileNumber	001-35039
	dei	Entity Registrant Name EntityRegistrantName	THIRD POINT REINSURANCE LTD.
	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	D0
	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	98-1039994
	dei	Entity Address Address Line1 EntityAddressAddressLine1	Point House
	dei	Entity Address Address Line2 EntityAddressAddressLine2	3 Waterloo Lane
	dei	Entity Address City Or Town EntityAddressCityOrTown	Pembroke
	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	HM 08
	dei	Entity Address Country EntityAddressCountry	BM
	dei	City Area Code CityAreaCode	441
	dei	Local Phone Number LocalPhoneNumber	542-3300
	dei	Security12b Title Security12bTitle	Common Shares, $0.10 par value
	dei	Trading Symbol TradingSymbol	TPRE
	dei	Security Exchange Name SecurityExchangeName	NYSE
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	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.86
CY2020Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.73
CY2019Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.16
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.10
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.84
CY2020Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	92613393	shares
CY2019Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	91903556	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	92466813	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	91784268	shares
CY2020Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	92969646	shares
CY2019Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	91903556	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	92877674	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	92709421	shares
CY2020Q3	us-gaap	Stockholders Equity StockholdersEquity	1427571000	USD
CY2019Q3	us-gaap	Stockholders Equity StockholdersEquity	1383580000	USD
CY2020Q3	us-gaap	Stockholders Equity StockholdersEquity	1427571000	USD
CY2019Q3	us-gaap	Stockholders Equity StockholdersEquity	1383580000	USD
CY2020Q3	us-gaap	Minority Interest MinorityInterest	999000	USD
CY2019Q3	us-gaap	Minority Interest MinorityInterest	0	USD
CY2020Q3	us-gaap	Minority Interest MinorityInterest	999000	USD
CY2019Q3	us-gaap	Minority Interest MinorityInterest	0	USD
CY2020Q3	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	1428570000	USD
CY2019Q3	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	1383580000	USD
CY2020Q3	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	1428570000	USD
CY2019Q3	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	1383580000	USD
	us-gaap	Profit Loss ProfitLoss	9100000	USD
	us-gaap	Profit Loss ProfitLoss	170881000	USD
	us-gaap	Share Based Compensation ShareBasedCompensation	4678000	USD
	us-gaap	Share Based Compensation ShareBasedCompensation	6306000	USD
	us-gaap	Interest Expense Domestic Deposit Liabilities InterestExpenseDomesticDepositLiabilities	-95000	USD
	us-gaap	Interest Expense Domestic Deposit Liabilities InterestExpenseDomesticDepositLiabilities	4980000	USD
	us-gaap	Net Realized Or Unrealized Gain Loss On Trading Securities NetRealizedOrUnrealizedGainLossOnTradingSecurities	56799000	USD
	us-gaap	Net Realized Or Unrealized Gain Loss On Trading Securities NetRealizedOrUnrealizedGainLossOnTradingSecurities	2177000	USD
	tpre	Net Realizedand Unrealized Gain Losson Trading Securitiesrelatedpartyinvestmentfund NetRealizedandUnrealizedGainLossonTradingSecuritiesrelatedpartyinvestmentfund	8341000	USD
	tpre	Net Realizedand Unrealized Gain Losson Trading Securitiesrelatedpartyinvestmentfund NetRealizedandUnrealizedGainLossonTradingSecuritiesrelatedpartyinvestmentfund	207597000	USD
	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	3129000	USD
	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	6663000	USD
	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	1986000	USD
	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	231000	USD
	us-gaap	Increase Decrease In Premiums Receivable IncreaseDecreaseInPremiumsReceivable	-22930000	USD
	us-gaap	Increase Decrease In Premiums Receivable IncreaseDecreaseInPremiumsReceivable	50711000	USD
	us-gaap	Increase Decrease In Deferred Policy Acquisition Costs IncreaseDecreaseInDeferredPolicyAcquisitionCosts	-11871000	USD
	us-gaap	Increase Decrease In Deferred Policy Acquisition Costs IncreaseDecreaseInDeferredPolicyAcquisitionCosts	-36874000	USD
	us-gaap	Increase Decrease In Prepaid Reinsurance Premiums IncreaseDecreaseInPrepaidReinsurancePremiums	10518000	USD
	us-gaap	Increase Decrease In Prepaid Reinsurance Premiums IncreaseDecreaseInPrepaidReinsurancePremiums	-3182000	USD
	us-gaap	Increase Decrease In Reinsurance Recoverable IncreaseDecreaseInReinsuranceRecoverable	8106000	USD
	us-gaap	Increase Decrease In Reinsurance Recoverable IncreaseDecreaseInReinsuranceRecoverable	2239000	USD
	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-660000	USD
	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-2827000	USD
	us-gaap	Increase Decrease In Interest And Dividends Receivable IncreaseDecreaseInInterestAndDividendsReceivable	1602000	USD
	us-gaap	Increase Decrease In Interest And Dividends Receivable IncreaseDecreaseInInterestAndDividendsReceivable	3645000	USD
	us-gaap	Increase Decrease In Unearned Premiums IncreaseDecreaseInUnearnedPremiums	-25875000	USD
	us-gaap	Increase Decrease In Unearned Premiums IncreaseDecreaseInUnearnedPremiums	-10617000	USD
	us-gaap	Increase Decrease In Liability For Claims And Claims Adjustment Expense Reserve IncreaseDecreaseInLiabilityForClaimsAndClaimsAdjustmentExpenseReserve	77823000	USD
	us-gaap	Increase Decrease In Liability For Claims And Claims Adjustment Expense Reserve IncreaseDecreaseInLiabilityForClaimsAndClaimsAdjustmentExpenseReserve	119129000	USD
	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	-3853000	USD
	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	7346000	USD
	us-gaap	Increase Decrease In Reinsurance Payables IncreaseDecreaseInReinsurancePayables	38523000	USD
	us-gaap	Increase Decrease In Reinsurance Payables IncreaseDecreaseInReinsurancePayables	29052000	USD
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	45281000	USD
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	96697000	USD
	tpre	Proceedsfrom Trading Securities Heldfor Investment Related Party Investment Fund ProceedsfromTradingSecuritiesHeldforInvestmentRelatedPartyInvestmentFund	0	USD
	tpre	Proceedsfrom Trading Securities Heldfor Investment Related Party Investment Fund ProceedsfromTradingSecuritiesHeldforInvestmentRelatedPartyInvestmentFund	760000000	USD
	tpre	Paymentsto Acquire Trading Securities Heldfor Investment Related Party Investment Fund PaymentstoAcquireTradingSecuritiesHeldforInvestmentRelatedPartyInvestmentFund	0	USD
	tpre	Paymentsto Acquire Trading Securities Heldfor Investment Related Party Investment Fund PaymentstoAcquireTradingSecuritiesHeldforInvestmentRelatedPartyInvestmentFund	87000000	USD
	tpre	Increasedecreasein Participation Agreementwith Related Party Investment Fund IncreasedecreaseinParticipationAgreementwithRelatedPartyInvestmentFund	0	USD
	tpre	Increasedecreasein Participation Agreementwith Related Party Investment Fund IncreasedecreaseinParticipationAgreementwithRelatedPartyInvestmentFund	-2297000	USD
	us-gaap	Payments To Acquire Trading Securities Heldforinvestment PaymentsToAcquireTradingSecuritiesHeldforinvestment	444111000	USD
	us-gaap	Payments To Acquire Trading Securities Heldforinvestment PaymentsToAcquireTradingSecuritiesHeldforinvestment	330963000	USD
	us-gaap	Proceeds From Payments For Trading Securities ProceedsFromPaymentsForTradingSecurities	441611000	USD
	us-gaap	Proceeds From Payments For Trading Securities ProceedsFromPaymentsForTradingSecurities	349696000	USD
	us-gaap	Payments For Derivative Instrument Investing Activities PaymentsForDerivativeInstrumentInvestingActivities	129000	USD
	us-gaap	Payments For Derivative Instrument Investing Activities PaymentsForDerivativeInstrumentInvestingActivities	0	USD
	us-gaap	Proceeds From Derivative Instrument Investing Activities ProceedsFromDerivativeInstrumentInvestingActivities	15721000	USD
	us-gaap	Proceeds From Derivative Instrument Investing Activities ProceedsFromDerivativeInstrumentInvestingActivities	0	USD
	us-gaap	Increase Decrease In Payables To Broker Dealers IncreaseDecreaseInPayablesToBrokerDealers	-81142000	USD
	us-gaap	Increase Decrease In Payables To Broker Dealers IncreaseDecreaseInPayablesToBrokerDealers	1411000	USD
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-68050000	USD
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	690847000	USD
	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	0	USD
	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	-1887000	USD
	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	302000	USD
	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	68000	USD
	tpre	Increase Decreasein Deposit Contracts Liabilities IncreaseDecreaseinDepositContractsLiabilities	-16431000	USD
	tpre	Increase Decreasein Deposit Contracts Liabilities IncreaseDecreaseinDepositContractsLiabilities	6924000	USD
	us-gaap	Proceeds From Payments To Minority Shareholders ProceedsFromPaymentsToMinorityShareholders	1020000	USD
	us-gaap	Proceeds From Payments To Minority Shareholders ProceedsFromPaymentsToMinorityShareholders	0	USD
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-15713000	USD
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	8743000	USD
	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-38482000	USD
	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	796287000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	1653958000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	713337000	USD
CY2020Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	1615476000	USD
CY2019Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	1509624000	USD
	us-gaap	Interest Paid Net InterestPaidNet	8235000	USD
	us-gaap	Interest Paid Net InterestPaidNet	8050000	USD
	us-gaap	Income Taxes Paid IncomeTaxesPaid	53000	USD
	us-gaap	Income Taxes Paid IncomeTaxesPaid	10000	USD
CY2020Q3	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	513783000	USD
CY2019Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	639415000	USD
CY2020Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	1615476000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	1653958000	USD
CY2020Q3	us-gaap	Restricted Investments RestrictedInvestments	126851000	USD
CY2019Q4	us-gaap	Restricted Investments RestrictedInvestments	142617000	USD
CY2020Q3	tpre	Cashcashequivalentsrestrictedcashrestrictedcashequivalentsandrestrictedinvestments Cashcashequivalentsrestrictedcashrestrictedcashequivalentsandrestrictedinvestments	1742327000	USD
CY2019Q4	tpre	Cashcashequivalentsrestrictedcashrestrictedcashequivalentsandrestrictedinvestments Cashcashequivalentsrestrictedcashrestrictedcashequivalentsandrestrictedinvestments	1796575000	USD
CY2020Q3	tpre	Assetsunder Management Carrying Amount Assets AssetsunderManagementCarryingAmountAssets	2689734000	USD
CY2019Q4	tpre	Assetsunder Management Carrying Amount Assets AssetsunderManagementCarryingAmountAssets	2590636000	USD
CY2020Q3	tpre	Assetsunder Management Carrying Amount Liabilitiesand Noncontrolling Interest AssetsunderManagementCarryingAmountLiabilitiesandNoncontrollingInterest	16710000	USD
CY2019Q4	tpre	Assetsunder Management Carrying Amount Liabilitiesand Noncontrolling Interest AssetsunderManagementCarryingAmountLiabilitiesandNoncontrollingInterest	509000	USD
CY2020Q3	us-gaap	Assets Under Management Carrying Amount AssetsUnderManagementCarryingAmount	2673024000	USD
CY2019Q4	us-gaap	Assets Under Management Carrying Amount AssetsUnderManagementCarryingAmount	2590127000	USD
CY2020Q3	us-gaap	Financial Instruments Owned Corporate Equities At Fair Value FinancialInstrumentsOwnedCorporateEquitiesAtFairValue	1000000	USD
CY2020Q3	tpre	Financial Instruments Owned Principal Investments Preferred Equityat Fair Value FinancialInstrumentsOwnedPrincipalInvestmentsPreferredEquityatFairValue	3000000	USD
CY2020Q3	us-gaap	Trading Securities Equity TradingSecuritiesEquity	4000000	USD
CY2020Q3	us-gaap	Financial Instruments Owned Mortgages Mortgage Backed And Asset Backed Securities At Fair Value FinancialInstrumentsOwnedMortgagesMortgageBackedAndAssetBackedSecuritiesAtFairValue	29245000	USD
CY2020Q3	tpre	Financial Instruments Owned Bank Debtsat Fair Value FinancialInstrumentsOwnedBankDebtsatFairValue	718000	USD
CY2020Q3	us-gaap	Financial Instruments Owned Corporate Debt At Fair Value FinancialInstrumentsOwnedCorporateDebtAtFairValue	56798000	USD
CY2020Q3	us-gaap	Financial Instruments Owned Us Government And Agency Obligations At Fair Value FinancialInstrumentsOwnedUSGovernmentAndAgencyObligationsAtFairValue	99499000	USD
CY2020Q3	us-gaap	Trading Securities Debt TradingSecuritiesDebt	186260000	USD
CY2020Q3	us-gaap	Assets Fair Value Disclosure AssetsFairValueDisclosure	190260000	USD
CY2020Q3	us-gaap	Alternative Investment AlternativeInvestment	868971000	USD
CY2020Q3	tpre	Assets Including Alternative Investments Fair Value Disclosure AssetsIncludingAlternativeInvestmentsFairValueDisclosure	1059231000	USD
CY2020Q3	us-gaap	Financial Instruments Sold Not Yet Purchased Us Government And Agency Obligations FinancialInstrumentsSoldNotYetPurchasedUSGovernmentAndAgencyObligations	15389000	USD
CY2020Q3	us-gaap	Financial Instruments Sold Not Yet Purchased At Fair Value FinancialInstrumentsSoldNotYetPurchasedAtFairValue	15389000	USD
CY2020Q3	us-gaap	Embedded Derivative Fair Value Of Embedded Derivative Liability EmbeddedDerivativeFairValueOfEmbeddedDerivativeLiability	4000	USD
CY2020Q3	us-gaap	Liabilities Fair Value Disclosure LiabilitiesFairValueDisclosure	15393000	USD
CY2019Q4	us-gaap	Financial Instruments Owned Corporate Equities At Fair Value FinancialInstrumentsOwnedCorporateEquitiesAtFairValue	1000000	USD
CY2019Q4	tpre	Financial Instruments Owned Principal Investments Preferred Equityat Fair Value FinancialInstrumentsOwnedPrincipalInvestmentsPreferredEquityatFairValue	3000000	USD
CY2019Q4	us-gaap	Trading Securities Equity TradingSecuritiesEquity	4000000	USD
CY2019Q4	us-gaap	Financial Instruments Owned Us Government And Agency Obligations At Fair Value FinancialInstrumentsOwnedUSGovernmentAndAgencyObligationsAtFairValue	101186000	USD
CY2019Q4	us-gaap	Financial Instruments Owned Other Sovereign Government Obligations At Fair Value FinancialInstrumentsOwnedOtherSovereignGovernmentObligationsAtFairValue	23885000	USD
CY2019Q4	us-gaap	Trading Securities Debt TradingSecuritiesDebt	125071000	USD
CY2019Q4	us-gaap	Assets Fair Value Disclosure AssetsFairValueDisclosure	129071000	USD
CY2019Q4	us-gaap	Alternative Investment AlternativeInvestment	860630000	USD
CY2019Q4	tpre	Assets Including Alternative Investments Fair Value Disclosure AssetsIncludingAlternativeInvestmentsFairValueDisclosure	989701000	USD
CY2019Q4	us-gaap	Embedded Derivative Fair Value Of Embedded Derivative Liability EmbeddedDerivativeFairValueOfEmbeddedDerivativeLiability	31000	USD
CY2019Q4	us-gaap	Liabilities Fair Value Disclosure LiabilitiesFairValueDisclosure	31000	USD
CY2020Q3	us-gaap	Security Owned Not Readily Marketable Quoted Value SecurityOwnedNotReadilyMarketableQuotedValue	0	USD
CY2020Q3	tpre	Security Ownedand Sold Not Yet Purchased Not Readily Marketable Quoted Price Percent SecurityOwnedandSoldNotYetPurchasedNotReadilyMarketableQuotedPricePercent	0
CY2020Q2	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Value FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue	5153000	USD
CY2020Q3	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Transfers Net FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersNet	-1153000	USD
CY2020Q3	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Purchases FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases	0	USD
CY2020Q3	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Sales FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSales	0	USD
CY2020Q3	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Gain Loss Included In Earnings1 FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1	0	USD
CY2020Q3	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Value FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue	4000000	USD
CY2020Q2	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliations Recurring Basis Liability Value FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue	4000	USD
CY2020Q3	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Liability Transfers Net FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityTransfersNet	0	USD
CY2020Q3	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Liability Purchases FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityPurchases	0	USD
CY2020Q3	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Liability Sales FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilitySales	0	USD
CY2020Q3	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Liability Gain Loss Included In Earnings FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityGainLossIncludedInEarnings	0	USD
CY2020Q3	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliations Recurring Basis Liability Value FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue	4000	USD
CY2019Q4	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Value FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue	4000000	USD
	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Transfers Net FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersNet	-5577000	USD
	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Purchases FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases	5458000	USD
	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Sales FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSales	0	USD
	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Gain Loss Included In Earnings1 FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1	119000	USD
CY2020Q3	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Value FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue	4000000	USD
CY2019Q4	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliations Recurring Basis Liability Value FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue	31000	USD
	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Liability Transfers Net FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityTransfersNet	0	USD
	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Liability Purchases FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityPurchases	0	USD
	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Liability Sales FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilitySales	0	USD
	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Liability Gain Loss Included In Earnings FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityGainLossIncludedInEarnings	27000	USD
CY2020Q3	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliations Recurring Basis Liability Value FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue	4000	USD
CY2019Q2	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Value FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue	3000000	USD
CY2019Q3	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Transfers Net FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersNet	0	USD
CY2019Q3	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Purchases FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases	500000	USD
CY2019Q3	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Sales FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSales	0	USD
CY2019Q3	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Gain Loss Included In Earnings1 FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1	0	USD
CY2019Q3	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Value FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue	3500000	USD
CY2019Q2	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliations Recurring Basis Liability Value FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue	54000	USD
CY2019Q3	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Liability Transfers Net FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityTransfersNet	0	USD
CY2019Q3	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Liability Purchases FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityPurchases	0	USD
CY2019Q3	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Liability Sales FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilitySales	0	USD
CY2019Q3	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Liability Gain Loss Included In Earnings FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityGainLossIncludedInEarnings	17000	USD
CY2019Q3	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliations Recurring Basis Liability Value FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue	37000	USD
CY2018Q4	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Value FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue	0	USD
	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Transfers Net FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersNet	0	USD
	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Purchases FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases	3500000	USD
	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Sales FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSales	0	USD
	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Gain Loss Included In Earnings1 FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1	0	USD
CY2019Q3	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Value FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue	3500000	USD
CY2018Q4	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliations Recurring Basis Liability Value FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue	22000	USD
	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Liability Transfers Net FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityTransfersNet	0	USD
	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Liability Purchases FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityPurchases	0	USD
	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Liability Sales FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilitySales	0	USD
	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Liability Gain Loss Included In Earnings FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityGainLossIncludedInEarnings	-15000	USD
CY2019Q3	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliations Recurring Basis Liability Value FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue	37000	USD
CY2020Q3	us-gaap	Fair Value Assets Measured On Recurring Basis Change In Unrealized Gain Loss FairValueAssetsMeasuredOnRecurringBasisChangeInUnrealizedGainLoss	0	USD
	us-gaap	Fair Value Assets Measured On Recurring Basis Change In Unrealized Gain Loss FairValueAssetsMeasuredOnRecurringBasisChangeInUnrealizedGainLoss	0	USD
CY2019Q3	us-gaap	Fair Value Assets Measured On Recurring Basis Change In Unrealized Gain Loss FairValueAssetsMeasuredOnRecurringBasisChangeInUnrealizedGainLoss	0	USD
	us-gaap	Fair Value Assets Measured On Recurring Basis Change In Unrealized Gain Loss FairValueAssetsMeasuredOnRecurringBasisChangeInUnrealizedGainLoss	0	USD
	us-gaap	Due To And From Broker Dealers And Clearing Organizations Disclosure DueToAndFromBrokerDealersAndClearingOrganizationsDisclosure	<div style="margin-top:9pt;text-align:justify"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:120%">6. Due from brokers </span></div><div style="margin-top:9pt;text-align:justify"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">In the nine months ended September 30, 2020, the Company expanded its fixed income portfolio by investing in structured credit and corporate credit securities such as corporate bonds and bank debt. The Company has also hedged part of the interest rate risk underlying these securities by purchasing short positions in long duration U.S. Treasuries.</span></div><div style="margin-top:9pt;text-align:justify"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">The Company holds substantially all of its fixed income investments through prime brokers pursuant to agreements between the Company and each prime broker. The brokerage arrangements differ from broker to broker, but generally cash and investments in securities are available as collateral against investments in securities sold, not yet purchased, if required. </span></div><div style="margin-top:9pt;text-align:justify"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">As of September 30, 2020, the Company’s due from/to brokers were comprised of the following:</span></div><div style="margin-bottom:5pt;margin-top:5pt;text-align:center"><table style="border-collapse:collapse;display:inline-table;vertical-align:top;width:100.000%"><tr><td style="width:1.0%"/><td style="width:84.957%"/><td style="width:0.1%"/><td style="width:1.0%"/><td style="width:12.843%"/><td style="width:0.1%"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/></tr><tr><td colspan="3" style="padding:0 1pt"/><td colspan="3" style="padding:2px 1pt;text-align:center;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:8pt;font-weight:700;line-height:100%">September 30,<br/>2020</span></td><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/></tr><tr><td colspan="3" style="background-color:#ffffff;padding:2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:700;line-height:100%">Due from brokers</span></td><td colspan="3" style="background-color:#ffffff;border-top:1pt solid #000000;padding:0 1pt"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/></tr><tr><td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">Cash held at brokers</span></td><td style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">$</span></td><td style="background-color:#cceeff;padding:2px 0;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">69,824 </span></td><td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/></tr><tr><td colspan="3" style="background-color:#ffffff;padding:2px 1pt;text-align:left;vertical-align:bottom"><div><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">Receivable from unsettled trades</span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:5.85pt;font-weight:400;line-height:100%;position:relative;top:-3.15pt;vertical-align:baseline"> (1)</span></div></td><td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">11,318 </span></td><td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/></tr><tr><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/></tr><tr><td colspan="3" style="background-color:#cceeff;padding:0 1pt"/><td style="background-color:#cceeff;border-bottom:3pt double #000000;border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">$</span></td><td style="background-color:#cceeff;border-bottom:3pt double #000000;border-top:1pt solid #000000;padding:2px 0;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">81,142 </span></td><td style="background-color:#cceeff;border-bottom:3pt double #000000;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/></tr><tr><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/></tr><tr><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/></tr><tr><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/></tr><tr><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/></tr><tr><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/></tr></table></div><div style="margin-top:6pt;padding-left:13.5pt;text-align:justify;text-indent:-13.5pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:8pt;font-weight:400;line-height:120%">(1) Receivables relating to securities sold by the Company were recorded as receivable from unsettled trades in due from brokers in the Company’s condensed consolidated balance sheets. </span></div><div style="margin-top:6pt;text-align:justify"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">Due from brokers include cash balances maintained with the Company’s prime brokers, receivables from unsettled trades and proceeds from securities sold, not yet purchased. </span></div><div style="margin-top:6pt;text-align:justify"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">Margin debt balances were collateralized by cash held by the broker and certain of the Company’s securities. Margin interest was paid either at the daily broker call rate or based on London Inter-bank Offered Rate. Amounts are borrowed through committed facilities with terms of up to 90 days, secured by assets of the Company held by the prime broker, and incur interest based on the Company’s negotiated rates. This interest expense is reflected in other net investment income (loss) in the condensed consolidated statements of income (loss).</span></div>
CY2020Q3	us-gaap	Deposits Paid For Securities Borrowed At Carrying Value DepositsPaidForSecuritiesBorrowedAtCarryingValue	69824000	USD
CY2020Q3	tpre	Receivablesfrom Unsettled Trades ReceivablesfromUnsettledTrades	11318000	USD
CY2020Q3	us-gaap	Receivables From Brokers Dealers And Clearing Organizations ReceivablesFromBrokersDealersAndClearingOrganizations	81142000	USD
CY2020Q3	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Reported Claims Amount LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseReportedClaimsAmount	232697000	USD
CY2019Q4	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Reported Claims Amount LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseReportedClaimsAmount	148166000	USD
CY2020Q3	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Incurred But Not Reported Ibnr Claims Amount LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredButNotReportedIBNRClaimsAmount	952319000	USD
CY2019Q4	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Incurred But Not Reported Ibnr Claims Amount LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredButNotReportedIBNRClaimsAmount	963359000	USD
CY2020Q3	tpre	Deferredgainonretroactivereinsurancecontracts Deferredgainonretroactivereinsurancecontracts	1133000	USD
CY2019Q4	tpre	Deferredgainonretroactivereinsurancecontracts Deferredgainonretroactivereinsurancecontracts	167000	USD
CY2020Q3	us-gaap	Liability For Claims And Claims Adjustment Expense Property Casualty Liability LiabilityForClaimsAndClaimsAdjustmentExpensePropertyCasualtyLiability	1186149000	USD
CY2019Q4	us-gaap	Liability For Claims And Claims Adjustment Expense Property Casualty Liability LiabilityForClaimsAndClaimsAdjustmentExpensePropertyCasualtyLiability	1111692000	USD
	us-gaap	Schedule Of Liability For Unpaid Claims And Claims Adjustment Expense ScheduleOfLiabilityForUnpaidClaimsAndClaimsAdjustmentExpense	<div style="margin-top:9pt;text-align:justify"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">The following table represents the activity in the loss and loss adjustment expense reserves for the nine months ended September 30, 2020 and 2019:</span></div><div style="margin-bottom:5pt;margin-top:5pt;text-align:center"><table style="border-collapse:collapse;display:inline-table;vertical-align:top;width:100.000%"><tr><td style="width:1.0%"/><td style="width:69.252%"/><td style="width:0.1%"/><td style="width:1.0%"/><td style="width:13.803%"/><td style="width:0.1%"/><td style="width:0.1%"/><td style="width:0.601%"/><td style="width:0.1%"/><td style="width:1.0%"/><td style="width:12.844%"/><td style="width:0.1%"/></tr><tr><td colspan="3" style="padding:0 1pt"/><td colspan="3" style="padding:2px 1pt;text-align:center;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:8pt;font-weight:700;line-height:100%">September 30, 2020</span></td><td colspan="3" style="padding:0 1pt"/><td colspan="3" style="padding:2px 1pt;text-align:center;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:8pt;font-weight:700;line-height:100%">September 30, 2019</span></td></tr><tr><td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">Gross reserves for loss and loss adjustment expenses, beginning of period</span></td><td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">$</span></td><td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 0;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">1,111,692 </span></td><td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/><td colspan="3" style="background-color:#cceeff;padding:0 1pt"/><td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">$</span></td><td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 0;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">937,157 </span></td><td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/></tr><tr><td colspan="3" style="background-color:#ffffff;padding:2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">Less: loss and loss adjustment expenses recoverable, beginning of period</span></td><td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">(5,520)</span></td><td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/><td colspan="3" style="background-color:#ffffff;padding:0 1pt"/><td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">(2,031)</span></td><td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/></tr><tr><td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">Less: deferred charges on retroactive reinsurance contracts</span></td><td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">(6,738)</span></td><td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/><td colspan="3" style="background-color:#cceeff;padding:0 1pt"/><td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">(3,847)</span></td><td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/></tr><tr><td colspan="3" style="background-color:#ffffff;padding:2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">Net reserves for loss and loss adjustment expenses, beginning of period</span></td><td colspan="2" style="background-color:#ffffff;border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">1,099,434 </span></td><td style="background-color:#ffffff;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/><td colspan="3" style="background-color:#ffffff;padding:0 1pt"/><td colspan="2" style="background-color:#ffffff;border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">931,279 </span></td><td style="background-color:#ffffff;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/></tr><tr><td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">Increase (decrease) in net loss and loss adjustment expenses incurred in respect of losses occurring in:</span></td><td colspan="3" style="background-color:#cceeff;padding:0 1pt"/><td colspan="3" style="background-color:#cceeff;padding:0 1pt"/><td colspan="3" style="background-color:#cceeff;padding:0 1pt"/></tr><tr><td colspan="3" style="background-color:#ffffff;padding:2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%"> Current year</span></td><td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">302,264 </span></td><td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/><td colspan="3" style="background-color:#ffffff;padding:0 1pt"/><td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">345,479 </span></td><td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/></tr><tr><td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%"> Prior years</span></td><td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">(14,885)</span></td><td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/><td colspan="3" style="background-color:#cceeff;padding:0 1pt"/><td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">(82,374)</span></td><td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/></tr><tr><td colspan="3" style="background-color:#ffffff;padding:2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">Total incurred loss and loss adjustment expenses</span></td><td colspan="2" style="background-color:#ffffff;border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">287,379 </span></td><td style="background-color:#ffffff;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/><td colspan="3" style="background-color:#ffffff;padding:0 1pt"/><td colspan="2" style="background-color:#ffffff;border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">263,105 </span></td><td style="background-color:#ffffff;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/></tr><tr><td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">Net loss and loss adjustment expenses paid in respect of losses occurring in:</span></td><td colspan="3" style="background-color:#cceeff;border-top:1pt solid #000000;padding:0 1pt"/><td colspan="3" style="background-color:#cceeff;padding:0 1pt"/><td colspan="3" style="background-color:#cceeff;border-top:1pt solid #000000;padding:0 1pt"/></tr><tr><td colspan="3" style="background-color:#ffffff;padding:2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%"> Current year</span></td><td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">(43,545)</span></td><td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/><td colspan="3" style="background-color:#ffffff;padding:0 1pt"/><td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">(45,380)</span></td><td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/></tr><tr><td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%"> Prior years</span></td><td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">(173,433)</span></td><td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/><td colspan="3" style="background-color:#cceeff;padding:0 1pt"/><td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">(101,594)</span></td><td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/></tr><tr><td colspan="3" style="background-color:#ffffff;padding:2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">Total net paid losses</span></td><td colspan="2" style="background-color:#ffffff;border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">(216,978)</span></td><td style="background-color:#ffffff;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/><td colspan="3" style="background-color:#ffffff;padding:0 1pt"/><td colspan="2" style="background-color:#ffffff;border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">(146,974)</span></td><td style="background-color:#ffffff;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/></tr><tr><td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">Foreign currency translation</span></td><td colspan="2" style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">(3,366)</span></td><td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/><td colspan="3" style="background-color:#cceeff;padding:0 1pt"/><td colspan="2" style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">3,714 </span></td><td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/></tr><tr><td colspan="3" style="background-color:#ffffff;padding:2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">Net reserves for loss and loss adjustment expenses, end of period</span></td><td colspan="2" style="background-color:#ffffff;border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">1,166,469 </span></td><td style="background-color:#ffffff;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/><td colspan="3" style="background-color:#ffffff;padding:0 1pt"/><td colspan="2" style="background-color:#ffffff;border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">1,051,124 </span></td><td style="background-color:#ffffff;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/></tr><tr><td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">Plus: loss and loss adjustment expenses recoverable, end of period</span></td><td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">13,626 </span></td><td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/><td colspan="3" style="background-color:#cceeff;padding:0 1pt"/><td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">4,270 </span></td><td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/></tr><tr><td colspan="3" style="background-color:#ffffff;padding:2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">Plus: deferred charges on retroactive reinsurance contracts</span></td><td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">6,054 </span></td><td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/><td colspan="3" style="background-color:#ffffff;padding:0 1pt"/><td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">4,606 </span></td><td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/></tr><tr><td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">Gross reserves for loss and loss adjustment expenses, end of period</span></td><td style="background-color:#cceeff;border-bottom:3pt double #000000;border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">$</span></td><td style="background-color:#cceeff;border-bottom:3pt double #000000;border-top:1pt solid #000000;padding:2px 0;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">1,186,149 </span></td><td style="background-color:#cceeff;border-bottom:3pt double #000000;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/><td colspan="3" style="background-color:#cceeff;padding:0 1pt"/><td style="background-color:#cceeff;border-bottom:3pt double #000000;border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">$</span></td><td style="background-color:#cceeff;border-bottom:3pt double #000000;border-top:1pt solid #000000;padding:2px 0;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">1,060,000 </span></td><td style="background-color:#cceeff;border-bottom:3pt double #000000;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/></tr></table></div>
CY2019Q4	us-gaap	Liability For Claims And Claims Adjustment Expense LiabilityForClaimsAndClaimsAdjustmentExpense	1111692000	USD
CY2018Q4	us-gaap	Liability For Claims And Claims Adjustment Expense LiabilityForClaimsAndClaimsAdjustmentExpense	937157000	USD
CY2019Q4	us-gaap	Reinsurance Recoverables On Paid And Unpaid Losses ReinsuranceRecoverablesOnPaidAndUnpaidLosses	5520000	USD
CY2018Q4	us-gaap	Reinsurance Recoverables On Paid And Unpaid Losses ReinsuranceRecoverablesOnPaidAndUnpaidLosses	2031000	USD
CY2019Q4	us-gaap	Deferred Costs Current And Noncurrent DeferredCostsCurrentAndNoncurrent	6738000	USD
CY2018Q4	us-gaap	Deferred Costs Current And Noncurrent DeferredCostsCurrentAndNoncurrent	3847000	USD
CY2019Q4	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Net LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseNet	1099434000	USD
CY2018Q4	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Net LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseNet	931279000	USD
	us-gaap	Supplemental Information For Property Casualty Insurance Underwriters Current Year Claims And Claims Adjustment Expense SupplementalInformationForPropertyCasualtyInsuranceUnderwritersCurrentYearClaimsAndClaimsAdjustmentExpense	302264000	USD
	us-gaap	Supplemental Information For Property Casualty Insurance Underwriters Current Year Claims And Claims Adjustment Expense SupplementalInformationForPropertyCasualtyInsuranceUnderwritersCurrentYearClaimsAndClaimsAdjustmentExpense	345479000	USD
	us-gaap	Supplemental Information For Property Casualty Insurance Underwriters Prior Year Claims And Claims Adjustment Expense SupplementalInformationForPropertyCasualtyInsuranceUnderwritersPriorYearClaimsAndClaimsAdjustmentExpense	-14885000	USD
	us-gaap	Supplemental Information For Property Casualty Insurance Underwriters Prior Year Claims And Claims Adjustment Expense SupplementalInformationForPropertyCasualtyInsuranceUnderwritersPriorYearClaimsAndClaimsAdjustmentExpense	-82374000	USD
	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Incurred Claims1 LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredClaims1	287379000	USD
	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Incurred Claims1 LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredClaims1	263105000	USD
	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Claims Paid Current Year1 LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidCurrentYear1	43545000	USD
	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Claims Paid Current Year1 LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidCurrentYear1	45380000	USD
	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Claims Paid Prior Years1 LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidPriorYears1	173433000	USD
	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Claims Paid Prior Years1 LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidPriorYears1	101594000	USD
	us-gaap	Payments For Losses And Loss Adjustment Expense PaymentsForLossesAndLossAdjustmentExpense	216978000	USD
	us-gaap	Payments For Losses And Loss Adjustment Expense PaymentsForLossesAndLossAdjustmentExpense	146974000	USD
	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Foreign Currency Translation Gain Loss LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseForeignCurrencyTranslationGainLoss	-3366000	USD
	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Foreign Currency Translation Gain Loss LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseForeignCurrencyTranslationGainLoss	3714000	USD
CY2020Q3	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Net LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseNet	1166469000	USD
CY2019Q3	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Net LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseNet	1051124000	USD
CY2020Q3	us-gaap	Reinsurance Recoverables On Paid And Unpaid Losses ReinsuranceRecoverablesOnPaidAndUnpaidLosses	13626000	USD
CY2019Q3	us-gaap	Reinsurance Recoverables On Paid And Unpaid Losses ReinsuranceRecoverablesOnPaidAndUnpaidLosses	4270000	USD
CY2020Q3	us-gaap	Deferred Costs Current And Noncurrent DeferredCostsCurrentAndNoncurrent	6054000	USD
CY2019Q3	us-gaap	Deferred Costs Current And Noncurrent DeferredCostsCurrentAndNoncurrent	4606000	USD
CY2020Q3	us-gaap	Liability For Claims And Claims Adjustment Expense LiabilityForClaimsAndClaimsAdjustmentExpense	1186149000	USD
CY2019Q3	us-gaap	Liability For Claims And Claims Adjustment Expense LiabilityForClaimsAndClaimsAdjustmentExpense	1060000000	USD
	tpre	Prior Year Claimsand Claims Adjustment Expense Including Amortizationof Deferred Gains PriorYearClaimsandClaimsAdjustmentExpenseIncludingAmortizationofDeferredGains	-14900000	USD
CY2020Q3	us-gaap	Deferred Costs Current And Noncurrent DeferredCostsCurrentAndNoncurrent	6100000	USD
CY2019Q4	us-gaap	Deferred Costs Current And Noncurrent DeferredCostsCurrentAndNoncurrent	6700000	USD
	tpre	Prior Year Claimsand Claims Adjustment Expense Including Amortizationof Deferred Gains PriorYearClaimsandClaimsAdjustmentExpenseIncludingAmortizationofDeferredGains	-82400000	USD
CY2020Q3	us-gaap	Affiliate Costs AffiliateCosts	20416000	USD
CY2019Q3	us-gaap	Affiliate Costs AffiliateCosts	3617000	USD
	us-gaap	Affiliate Costs AffiliateCosts	27451000	USD
	us-gaap	Affiliate Costs AffiliateCosts	13603000	USD
CY2019Q4	us-gaap	Deposit Contracts Liabilities DepositContractsLiabilities	172259000	USD
CY2018Q4	us-gaap	Deposit Contracts Liabilities DepositContractsLiabilities	145342000	USD
	tpre	Deposit Contracts Liabilities Agreement Consideration DepositContractsLiabilitiesAgreementConsideration	550000	USD
	tpre	Deposit Contracts Liabilities Agreement Consideration DepositContractsLiabilitiesAgreementConsideration	23884000	USD
	tpre	Tpre Deposit Contracts Liabilities Agreement Consideration Receivable Tpre_DepositContractsLiabilitiesAgreementConsiderationReceivable	0	USD
	tpre	Tpre Deposit Contracts Liabilities Agreement Consideration Receivable Tpre_DepositContractsLiabilitiesAgreementConsiderationReceivable	10164000	USD
	tpre	Deposit Contracts Liabilities Net Investment Income Allocation Accrued DepositContractsLiabilitiesNetInvestmentIncomeAllocationAccrued	-95000	USD
	tpre	Deposit Contracts Liabilities Net Investment Income Allocation Accrued DepositContractsLiabilitiesNetInvestmentIncomeAllocationAccrued	5879000	USD
	tpre	Deposit Contracts Liabilities Payments DepositContractsLiabilitiesPayments	16981000	USD
	tpre	Deposit Contracts Liabilities Payments DepositContractsLiabilitiesPayments	13052000	USD
	tpre	Deposit Contracts Liabilities Translation Adjustment DepositContractsLiabilitiesTranslationAdjustment	-36000	USD
	tpre	Deposit Contracts Liabilities Translation Adjustment DepositContractsLiabilitiesTranslationAdjustment	42000	USD
CY2020Q3	us-gaap	Deposit Contracts Liabilities DepositContractsLiabilities	155697000	USD
CY2019Q4	us-gaap	Deposit Contracts Liabilities DepositContractsLiabilities	172259000	USD
CY2020Q3	us-gaap	Line Of Credit Facility Fair Value Of Amount Outstanding LineOfCreditFacilityFairValueOfAmountOutstanding	275189000	USD
CY2020Q3	tpre	Restrictedcashsecuringcreditfacilitiesandreinsurancecontracts Restrictedcashsecuringcreditfacilitiesandreinsurancecontracts	275189000	USD
CY2020Q3	tpre	Net Realized Gains Losseson Investment And Derivatives NetRealizedGainsLossesonInvestmentAndDerivatives	3446000	USD
CY2019Q3	tpre	Net Realized Gains Losseson Investment And Derivatives NetRealizedGainsLossesonInvestmentAndDerivatives	-4242000	USD
	tpre	Net Realized Gains Losseson Investment And Derivatives NetRealizedGainsLossesonInvestmentAndDerivatives	42572000	USD
	tpre	Net Realized Gains Losseson Investment And Derivatives NetRealizedGainsLossesonInvestmentAndDerivatives	-4198000	USD
CY2020Q3	tpre	Changein Net Unrealized Gains Losseson Investmentsand Investment Derivatives ChangeinNetUnrealizedGainsLossesonInvestmentsandInvestmentDerivatives	-1830000	USD
CY2019Q3	tpre	Changein Net Unrealized Gains Losseson Investmentsand Investment Derivatives ChangeinNetUnrealizedGainsLossesonInvestmentsandInvestmentDerivatives	3661000	USD
	tpre	Changein Net Unrealized Gains Losseson Investmentsand Investment Derivatives ChangeinNetUnrealizedGainsLossesonInvestmentsandInvestmentDerivatives	14200000	USD
	tpre	Changein Net Unrealized Gains Losseson Investmentsand Investment Derivatives ChangeinNetUnrealizedGainsLossesonInvestmentsandInvestmentDerivatives	6390000	USD
CY2020Q3	us-gaap	Foreign Currency Transaction Gain Loss Realized ForeignCurrencyTransactionGainLossRealized	5349000	USD
CY2019Q3	us-gaap	Foreign Currency Transaction Gain Loss Realized ForeignCurrencyTransactionGainLossRealized	-2065000	USD
	us-gaap	Foreign Currency Transaction Gain Loss Realized ForeignCurrencyTransactionGainLossRealized	-2218000	USD
	us-gaap	Foreign Currency Transaction Gain Loss Realized ForeignCurrencyTransactionGainLossRealized	508000	USD
CY2020Q3	tpre	Dividendand Interest Income Netof Withholding Taxes DividendandInterestIncomeNetofWithholdingTaxes	4846000	USD
CY2019Q3	tpre	Dividendand Interest Income Netof Withholding Taxes DividendandInterestIncomeNetofWithholdingTaxes	5595000	USD
	tpre	Dividendand Interest Income Netof Withholding Taxes DividendandInterestIncomeNetofWithholdingTaxes	12593000	USD
	tpre	Dividendand Interest Income Netof Withholding Taxes DividendandInterestIncomeNetofWithholdingTaxes	11428000	USD
CY2020Q3	tpre	Investment Income Other Investment Expense InvestmentIncomeOtherInvestmentExpense	407000	USD
CY2019Q3	tpre	Investment Income Other Investment Expense InvestmentIncomeOtherInvestmentExpense	336000	USD
	tpre	Investment Income Other Investment Expense InvestmentIncomeOtherInvestmentExpense	1348000	USD
	tpre	Investment Income Other Investment Expense InvestmentIncomeOtherInvestmentExpense	779000	USD
CY2020Q3	tpre	Investmentincomenetrelatedpartyinvestmentfund Investmentincomenetrelatedpartyinvestmentfund	110552000	USD
CY2019Q3	tpre	Investmentincomenetrelatedpartyinvestmentfund Investmentincomenetrelatedpartyinvestmentfund	-5751000	USD
	tpre	Investmentincomenetrelatedpartyinvestmentfund Investmentincomenetrelatedpartyinvestmentfund	8341000	USD
	tpre	Investmentincomenetrelatedpartyinvestmentfund Investmentincomenetrelatedpartyinvestmentfund	207597000	USD
CY2020Q3	tpre	Investment Income InvestmentIncome	121956000	USD
CY2019Q3	tpre	Investment Income InvestmentIncome	-3138000	USD
	tpre	Investment Income InvestmentIncome	74140000	USD
	tpre	Investment Income InvestmentIncome	220946000	USD
CY2020Q3	tpre	Other Investment Expense OtherInvestmentExpense	325000	USD
CY2019Q3	tpre	Other Investment Expense OtherInvestmentExpense	335000	USD
	tpre	Other Investment Expense OtherInvestmentExpense	1087000	USD
	tpre	Other Investment Expense OtherInvestmentExpense	779000	USD
CY2020Q3	tpre	Net Investment Income From Cash Including Foreign Exchange Gain Loss NetInvestmentIncomeFromCashIncludingForeignExchangeGainLoss	5602000	USD
CY2019Q3	tpre	Net Investment Income From Cash Including Foreign Exchange Gain Loss NetInvestmentIncomeFromCashIncludingForeignExchangeGainLoss	1509000	USD
	tpre	Net Investment Income From Cash Including Foreign Exchange Gain Loss NetInvestmentIncomeFromCashIncludingForeignExchangeGainLoss	1893000	USD
	tpre	Net Investment Income From Cash Including Foreign Exchange Gain Loss NetInvestmentIncomeFromCashIncludingForeignExchangeGainLoss	7631000	USD
CY2020Q3	tpre	Other Investment Incomeand Other OtherInvestmentIncomeandOther	5277000	USD
CY2019Q3	tpre	Other Investment Incomeand Other OtherInvestmentIncomeandOther	1174000	USD
	tpre	Other Investment Incomeand Other OtherInvestmentIncomeandOther	806000	USD
	tpre	Other Investment Incomeand Other OtherInvestmentIncomeandOther	6852000	USD
CY2020Q3	tpre	Investmentincomenetrelatedpartyinvestmentfund Investmentincomenetrelatedpartyinvestmentfund	110552000	USD
CY2019Q3	tpre	Investmentincomenetrelatedpartyinvestmentfund Investmentincomenetrelatedpartyinvestmentfund	-5751000	USD
	tpre	Investmentincomenetrelatedpartyinvestmentfund Investmentincomenetrelatedpartyinvestmentfund	8341000	USD
	tpre	Investmentincomenetrelatedpartyinvestmentfund Investmentincomenetrelatedpartyinvestmentfund	207597000	USD
CY2020Q3	tpre	Investment Income InvestmentIncome	121956000	USD
CY2019Q3	tpre	Investment Income InvestmentIncome	-3138000	USD
	tpre	Investment Income InvestmentIncome	74140000	USD
	tpre	Investment Income InvestmentIncome	220946000	USD
CY2020Q3	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	4000000.0	USD
CY2019Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	8300000	USD
CY2019Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	94225498	shares
CY2018Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	93639610	shares
CY2020Q3	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	95314893	shares
CY2019Q3	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	94220567	shares
CY2020Q3	tpre	Share Capital Authorized ShareCapitalAuthorized	33000000.0	USD
CY2020Q3	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	300000000	shares
CY2020Q3	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.10
CY2020Q3	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	30000000	shares
CY2020Q3	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.10
CY2020Q3	us-gaap	Stock Repurchase Program Remaining Authorized Repurchase Amount1 StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1	61300000	USD
CY2020Q3	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	1525000	USD
CY2019Q3	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	894000	USD
	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	4678000	USD
	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	6306000	USD
CY2020Q3	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized	12900000	USD
CY2019Q4	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized	7100000	USD
	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Period For Recognition1 EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1	P1Y10M24D
	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Period For Recognition1 EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1	P1Y6M
CY2019Q4	tpre	Total Noncontrolling Interests TotalNoncontrollingInterests	0	USD
	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	-21000	USD
	tpre	Contributions From Noncontrolling Interest ContributionsFromNoncontrollingInterest	1020000	USD
CY2020Q3	tpre	Total Noncontrolling Interests TotalNoncontrollingInterests	999000	USD
CY2020Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	92613393	shares
CY2019Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	91903556	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	92466813	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	91784268	shares
CY2020Q3	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	0	shares
CY2019Q3	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	0	shares
	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	0	shares
	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	208652	shares
CY2020Q3	us-gaap	Incremental Common Shares Attributable To Call Options And Warrants IncrementalCommonSharesAttributableToCallOptionsAndWarrants	0	shares
CY2019Q3	us-gaap	Incremental Common Shares Attributable To Call Options And Warrants IncrementalCommonSharesAttributableToCallOptionsAndWarrants	0	shares
	us-gaap	Incremental Common Shares Attributable To Call Options And Warrants IncrementalCommonSharesAttributableToCallOptionsAndWarrants	0	shares
	us-gaap	Incremental Common Shares Attributable To Call Options And Warrants IncrementalCommonSharesAttributableToCallOptionsAndWarrants	150501	shares
CY2020Q3	us-gaap	Incremental Common Shares Attributable To Contingently Issuable Shares IncrementalCommonSharesAttributableToContingentlyIssuableShares	356253	shares
CY2019Q3	us-gaap	Incremental Common Shares Attributable To Contingently Issuable Shares IncrementalCommonSharesAttributableToContingentlyIssuableShares	0	shares
	us-gaap	Incremental Common Shares Attributable To Contingently Issuable Shares IncrementalCommonSharesAttributableToContingentlyIssuableShares	410861	shares
	us-gaap	Incremental Common Shares Attributable To Contingently Issuable Shares IncrementalCommonSharesAttributableToContingentlyIssuableShares	566000	shares
CY2020Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	92969646	shares
CY2019Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	91903556	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	92877674	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	92709421	shares
CY2020Q3	us-gaap	Net Income Loss NetIncomeLoss	68743000	USD
CY2019Q3	us-gaap	Net Income Loss NetIncomeLoss	-15099000	USD
	us-gaap	Net Income Loss NetIncomeLoss	9121000	USD
	us-gaap	Net Income Loss NetIncomeLoss	170881000	USD
CY2020Q3	us-gaap	Undistributed Earnings UndistributedEarnings	-574000	USD
CY2019Q3	us-gaap	Undistributed Earnings UndistributedEarnings	0	USD
	us-gaap	Undistributed Earnings UndistributedEarnings	-56000	USD
	us-gaap	Undistributed Earnings UndistributedEarnings	-515000	USD
CY2020Q3	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	68169000	USD
CY2019Q3	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-15099000	USD
	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	9065000	USD
	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	170366000	USD
CY2020Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.74
CY2019Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.16
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.10
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.86
CY2020Q3	us-gaap	Net Income Loss NetIncomeLoss	68743000	USD
CY2019Q3	us-gaap	Net Income Loss NetIncomeLoss	-15099000	USD
	us-gaap	Net Income Loss NetIncomeLoss	9121000	USD
	us-gaap	Net Income Loss NetIncomeLoss	170881000	USD
CY2020Q3	us-gaap	Undistributed Earnings Diluted UndistributedEarningsDiluted	-572000	USD
CY2019Q3	us-gaap	Undistributed Earnings Diluted UndistributedEarningsDiluted	0	USD
	us-gaap	Undistributed Earnings Diluted UndistributedEarningsDiluted	-56000	USD
	us-gaap	Undistributed Earnings Diluted UndistributedEarningsDiluted	-510000	USD
CY2020Q3	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	68171000	USD
CY2019Q3	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	-15099000	USD
	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	9065000	USD
	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	170371000	USD
CY2020Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.73
CY2019Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.16
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.10
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.84
CY2020Q3	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	3741266	shares
	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	3741266	shares
	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	3712037	shares
	us-gaap	Number Of Operating Segments NumberOfOperatingSegments	1	segment
CY2020Q3	us-gaap	Assumed Premiums Written AssumedPremiumsWritten	60779000	USD
CY2019Q3	us-gaap	Assumed Premiums Written AssumedPremiumsWritten	95388000	USD
CY2020Q3	us-gaap	Ceded Premiums Written CededPremiumsWritten	-185000	USD
CY2019Q3	us-gaap	Ceded Premiums Written CededPremiumsWritten	1116000	USD
CY2020Q3	us-gaap	Premiums Written Net PremiumsWrittenNet	60964000	USD
CY2019Q3	us-gaap	Premiums Written Net PremiumsWrittenNet	94272000	USD
CY2020Q3	us-gaap	Increase Decrease In Unearned Premiums Net IncreaseDecreaseInUnearnedPremiumsNet	80748000	USD
CY2019Q3	us-gaap	Increase Decrease In Unearned Premiums Net IncreaseDecreaseInUnearnedPremiumsNet	108976000	USD
CY2020Q3	us-gaap	Premiums Earned Net PremiumsEarnedNet	141712000	USD
CY2019Q3	us-gaap	Premiums Earned Net PremiumsEarnedNet	203248000	USD
CY2020Q3	us-gaap	Incurred Claims Property Casualty And Liability IncurredClaimsPropertyCasualtyAndLiability	110487000	USD
CY2019Q3	us-gaap	Incurred Claims Property Casualty And Liability IncurredClaimsPropertyCasualtyAndLiability	85703000	USD
CY2020Q3	us-gaap	Deferred Policy Acquisition Cost Amortization Expense DeferredPolicyAcquisitionCostAmortizationExpense	54817000	USD
CY2019Q3	us-gaap	Deferred Policy Acquisition Cost Amortization Expense DeferredPolicyAcquisitionCostAmortizationExpense	118271000	USD
CY2020Q3	tpre	Benefits Lossesand Expenses Excluding Other Expenses BenefitsLossesandExpensesExcludingOtherExpenses	169860000	USD
CY2019Q3	tpre	Benefits Lossesand Expenses Excluding Other Expenses BenefitsLossesandExpensesExcludingOtherExpenses	208743000	USD
CY2020Q3	tpre	Investment Income InvestmentIncome	121956000	USD
CY2019Q3	tpre	Investment Income InvestmentIncome	-3138000	USD
CY2020Q3	us-gaap	Other Operating Income Expense Net OtherOperatingIncomeExpenseNet	283000	USD
CY2019Q3	us-gaap	Other Operating Income Expense Net OtherOperatingIncomeExpenseNet	-5058000	USD
CY2020Q3	us-gaap	Interest Expense InterestExpense	2068000	USD
CY2019Q3	us-gaap	Interest Expense InterestExpense	2074000	USD
CY2020Q3	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	-5885000	USD
CY2019Q3	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	4921000	USD
CY2020Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	652000	USD
CY2019Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-213000	USD
CY2020Q3	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	-21000	USD
CY2019Q3	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	0	USD
CY2020Q3	us-gaap	Net Income Loss NetIncomeLoss	68743000	USD
CY2019Q3	us-gaap	Net Income Loss NetIncomeLoss	-15099000	USD
	us-gaap	Assumed Premiums Written AssumedPremiumsWritten	422481000	USD
	us-gaap	Assumed Premiums Written AssumedPremiumsWritten	497616000	USD
	us-gaap	Ceded Premiums Written CededPremiumsWritten	30037000	USD
	us-gaap	Ceded Premiums Written CededPremiumsWritten	3301000	USD
	us-gaap	Premiums Written Net PremiumsWrittenNet	392444000	USD
	us-gaap	Premiums Written Net PremiumsWrittenNet	494315000	USD
	us-gaap	Increase Decrease In Unearned Premiums Net IncreaseDecreaseInUnearnedPremiumsNet	36393000	USD
	us-gaap	Increase Decrease In Unearned Premiums Net IncreaseDecreaseInUnearnedPremiumsNet	7435000	USD
	us-gaap	Premiums Earned Net PremiumsEarnedNet	428837000	USD
	us-gaap	Premiums Earned Net PremiumsEarnedNet	501750000	USD
	us-gaap	Incurred Claims Property Casualty And Liability IncurredClaimsPropertyCasualtyAndLiability	287379000	USD
	us-gaap	Incurred Claims Property Casualty And Liability IncurredClaimsPropertyCasualtyAndLiability	263105000	USD
	us-gaap	Deferred Policy Acquisition Cost Amortization Expense DeferredPolicyAcquisitionCostAmortizationExpense	147741000	USD
	us-gaap	Deferred Policy Acquisition Cost Amortization Expense DeferredPolicyAcquisitionCostAmortizationExpense	233775000	USD
	tpre	Benefits Lossesand Expenses Excluding Other Expenses BenefitsLossesandExpensesExcludingOtherExpenses	450151000	USD
	tpre	Benefits Lossesand Expenses Excluding Other Expenses BenefitsLossesandExpensesExcludingOtherExpenses	514642000	USD
	tpre	Investment Income InvestmentIncome	74140000	USD
	tpre	Investment Income InvestmentIncome	220946000	USD
	us-gaap	Other Operating Income Expense Net OtherOperatingIncomeExpenseNet	-6410000	USD
	us-gaap	Other Operating Income Expense Net OtherOperatingIncomeExpenseNet	-12994000	USD
	us-gaap	Interest Expense InterestExpense	6162000	USD
	us-gaap	Interest Expense InterestExpense	6154000	USD
	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	3129000	USD
	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	6663000	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	4380000	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	1431000	USD
	us-gaap	Net Income Loss NetIncomeLoss	9121000	USD
	us-gaap	Net Income Loss NetIncomeLoss	170881000	USD
CY2020Q3	us-gaap	Assumed Premiums Written AssumedPremiumsWritten	60779000	USD
CY2020Q3	tpre	Gross Premiums As Percentage Of Total Gross Premiums GrossPremiumsAsPercentageOfTotalGrossPremiums	1.000
CY2019Q3	us-gaap	Assumed Premiums Written AssumedPremiumsWritten	95388000	USD
CY2019Q3	tpre	Gross Premiums As Percentage Of Total Gross Premiums GrossPremiumsAsPercentageOfTotalGrossPremiums	1.000
	us-gaap	Assumed Premiums Written AssumedPremiumsWritten	422481000	USD
	tpre	Gross Premiums As Percentage Of Total Gross Premiums GrossPremiumsAsPercentageOfTotalGrossPremiums	1.000
	us-gaap	Assumed Premiums Written AssumedPremiumsWritten	497616000	USD
	tpre	Gross Premiums As Percentage Of Total Gross Premiums GrossPremiumsAsPercentageOfTotalGrossPremiums	1.000
CY2020Q3	us-gaap	Investments Investments	1059231000	USD
CY2020Q3	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	513783000	USD
CY2020Q3	us-gaap	Restricted Cash And Cash Equivalents RestrictedCashAndCashEquivalents	1101693000	USD
CY2020Q3	tpre	Investmentsin Subsidiaries Consolidated InvestmentsinSubsidiariesConsolidated	0	USD
CY2020Q3	us-gaap	Receivables From Brokers Dealers And Clearing Organizations ReceivablesFromBrokersDealersAndClearingOrganizations	81142000	USD
CY2020Q3	us-gaap	Accrued Investment Income Receivable AccruedInvestmentIncomeReceivable	1835000	USD
CY2020Q3	us-gaap	Premiums And Other Receivables Net PremiumsAndOtherReceivablesNet	572672000	USD
CY2020Q3	us-gaap	Deferred Policy Acquisition Costs DeferredPolicyAcquisitionCosts	142846000	USD
CY2020Q3	us-gaap	Prepaid Reinsurance Premiums PrepaidReinsurancePremiums	27463000	USD
CY2020Q3	us-gaap	Reinsurance Recoverables On Paid And Unpaid Losses ReinsuranceRecoverablesOnPaidAndUnpaidLosses	13626000	USD
CY2020Q3	us-gaap	Due From Affiliates DueFromAffiliates	0	USD
CY2020Q3	us-gaap	Other Assets OtherAssets	20171000	USD
CY2020Q3	us-gaap	Assets Assets	3534462000	USD
CY2020Q3	us-gaap	Accounts Payable And Accrued Liabilities Current And Noncurrent AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent	13963000	USD
CY2020Q3	us-gaap	Reinsurance Payable ReinsurancePayable	120469000	USD
CY2020Q3	us-gaap	Deposit Contracts Liabilities DepositContractsLiabilities	155697000	USD
CY2020Q3	us-gaap	Unearned Premiums UnearnedPremiums	498893000	USD
CY2020Q3	us-gaap	Liability For Claims And Claims Adjustment Expense Property Casualty Liability LiabilityForClaimsAndClaimsAdjustmentExpensePropertyCasualtyLiability	1186149000	USD
CY2020Q3	us-gaap	Financial Instruments Sold Not Yet Purchased At Fair Value FinancialInstrumentsSoldNotYetPurchasedAtFairValue	15389000	USD
CY2020Q3	us-gaap	Interest And Dividends Payable Current And Noncurrent InterestAndDividendsPayableCurrentAndNoncurrent	1110000	USD
CY2020Q3	us-gaap	Senior Notes Current SeniorNotesCurrent	114222000	USD
CY2020Q3	us-gaap	Liabilities Liabilities	2105892000	USD
CY2020Q3	us-gaap	Common Stock Value CommonStockValue	9531000	USD
CY2020Q3	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	931972000	USD
CY2020Q3	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	486068000	USD
CY2020Q3	us-gaap	Stockholders Equity StockholdersEquity	1427571000	USD
CY2020Q3	us-gaap	Minority Interest MinorityInterest	999000	USD
CY2020Q3	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	1428570000	USD
CY2020Q3	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	3534462000	USD
CY2019Q4	us-gaap	Investments Investments	989701000	USD
CY2019Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	639415000	USD
CY2019Q4	us-gaap	Restricted Cash And Cash Equivalents RestrictedCashAndCashEquivalents	1014543000	USD
CY2019Q4	tpre	Investmentsin Subsidiaries Consolidated InvestmentsinSubsidiariesConsolidated	0	USD
CY2019Q4	us-gaap	Accrued Investment Income Receivable AccruedInvestmentIncomeReceivable	2178000	USD
CY2019Q4	us-gaap	Premiums And Other Receivables Net PremiumsAndOtherReceivablesNet	596120000	USD
CY2019Q4	us-gaap	Deferred Policy Acquisition Costs DeferredPolicyAcquisitionCosts	154717000	USD
CY2019Q4	us-gaap	Prepaid Reinsurance Premiums PrepaidReinsurancePremiums	16945000	USD
CY2019Q4	us-gaap	Reinsurance Recoverables On Paid And Unpaid Losses ReinsuranceRecoverablesOnPaidAndUnpaidLosses	5520000	USD
CY2019Q4	us-gaap	Due From Affiliates DueFromAffiliates	0	USD
CY2019Q4	us-gaap	Other Assets OtherAssets	20555000	USD
CY2019Q4	us-gaap	Assets Assets	3439694000	USD
CY2019Q4	us-gaap	Accounts Payable And Accrued Liabilities Current And Noncurrent AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent	17816000	USD
CY2019Q4	us-gaap	Reinsurance Payable ReinsurancePayable	81941000	USD
CY2019Q4	us-gaap	Deposit Contracts Liabilities DepositContractsLiabilities	172259000	USD
CY2019Q4	us-gaap	Unearned Premiums UnearnedPremiums	524768000	USD
CY2019Q4	us-gaap	Liability For Claims And Claims Adjustment Expense Property Casualty Liability LiabilityForClaimsAndClaimsAdjustmentExpensePropertyCasualtyLiability	1111692000	USD
CY2019Q4	us-gaap	Interest And Dividends Payable Current And Noncurrent InterestAndDividendsPayableCurrentAndNoncurrent	3055000	USD
CY2019Q4	us-gaap	Senior Notes Current SeniorNotesCurrent	114089000	USD
CY2019Q4	us-gaap	Liabilities Liabilities	2025620000	USD
CY2019Q4	us-gaap	Common Stock Value CommonStockValue	9423000	USD
CY2019Q4	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	927704000	USD
CY2019Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	476947000	USD
CY2019Q4	us-gaap	Stockholders Equity StockholdersEquity	1414074000	USD
CY2019Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	3439694000	USD
CY2020Q3	us-gaap	Assumed Premiums Written AssumedPremiumsWritten	60779000	USD
CY2020Q3	us-gaap	Ceded Premiums Written CededPremiumsWritten	-185000	USD
CY2020Q3	us-gaap	Premiums Written Net PremiumsWrittenNet	60964000	USD
CY2020Q3	us-gaap	Increase Decrease In Unearned Premiums Net IncreaseDecreaseInUnearnedPremiumsNet	80748000	USD
CY2020Q3	us-gaap	Premiums Earned Net PremiumsEarnedNet	141712000	USD
CY2020Q3	tpre	Investment Income InvestmentIncome	121956000	USD
CY2020Q3	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	0	USD
CY2020Q3	us-gaap	Revenues Revenues	263668000	USD
CY2020Q3	us-gaap	Incurred Claims Property Casualty And Liability IncurredClaimsPropertyCasualtyAndLiability	110487000	USD
CY2020Q3	us-gaap	Deferred Policy Acquisition Cost Amortization Expense DeferredPolicyAcquisitionCostAmortizationExpense	54817000	USD
CY2020Q3	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	21320000	USD
CY2020Q3	us-gaap	Other Operating Income Expense Net OtherOperatingIncomeExpenseNet	283000	USD
CY2020Q3	us-gaap	Interest Expense InterestExpense	2068000	USD
CY2020Q3	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	-5885000	USD
CY2020Q3	us-gaap	Benefits Losses And Expenses BenefitsLossesAndExpenses	194294000	USD
CY2020Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	69374000	USD
CY2020Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	652000	USD
CY2020Q3	us-gaap	Profit Loss ProfitLoss	68722000	USD
CY2020Q3	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	-21000	USD
CY2020Q3	us-gaap	Net Income Loss NetIncomeLoss	68743000	USD
	us-gaap	Assumed Premiums Written AssumedPremiumsWritten	422481000	USD
	us-gaap	Ceded Premiums Written CededPremiumsWritten	30037000	USD
	us-gaap	Premiums Written Net PremiumsWrittenNet	392444000	USD
	us-gaap	Increase Decrease In Unearned Premiums Net IncreaseDecreaseInUnearnedPremiumsNet	36393000	USD
	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	-21000	USD
	us-gaap	Incurred Claims Property Casualty And Liability IncurredClaimsPropertyCasualtyAndLiability	287379000	USD
	us-gaap	Deferred Policy Acquisition Cost Amortization Expense DeferredPolicyAcquisitionCostAmortizationExpense	147741000	USD
	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	44934000	USD
	us-gaap	Premiums Earned Net PremiumsEarnedNet	428837000	USD
	tpre	Investment Income InvestmentIncome	74140000	USD
	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	0	USD
	us-gaap	Revenues Revenues	502977000	USD
	us-gaap	Other Operating Income Expense Net OtherOperatingIncomeExpenseNet	-6410000	USD
	us-gaap	Interest Expense InterestExpense	6162000	USD
	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	3129000	USD
	us-gaap	Benefits Losses And Expenses BenefitsLossesAndExpenses	489497000	USD
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	13480000	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	4380000	USD
	us-gaap	Profit Loss ProfitLoss	9100000	USD
	us-gaap	Net Income Loss NetIncomeLoss	9121000	USD
CY2019Q3	us-gaap	Assumed Premiums Written AssumedPremiumsWritten	95388000	USD
CY2019Q3	us-gaap	Ceded Premiums Written CededPremiumsWritten	1116000	USD
CY2019Q3	us-gaap	Premiums Written Net PremiumsWrittenNet	94272000	USD
CY2019Q3	us-gaap	Increase Decrease In Unearned Premiums Net IncreaseDecreaseInUnearnedPremiumsNet	108976000	USD
CY2019Q3	us-gaap	Premiums Earned Net PremiumsEarnedNet	203248000	USD
CY2019Q3	tpre	Investment Income InvestmentIncome	-3138000	USD
CY2019Q3	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	0	USD
CY2019Q3	us-gaap	Revenues Revenues	200110000	USD
CY2019Q3	us-gaap	Incurred Claims Property Casualty And Liability IncurredClaimsPropertyCasualtyAndLiability	85703000	USD
CY2019Q3	us-gaap	Deferred Policy Acquisition Cost Amortization Expense DeferredPolicyAcquisitionCostAmortizationExpense	118271000	USD
CY2019Q3	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	9237000	USD
CY2019Q3	us-gaap	Other Operating Income Expense Net OtherOperatingIncomeExpenseNet	-5058000	USD
CY2019Q3	us-gaap	Interest Expense InterestExpense	2074000	USD
CY2019Q3	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	4921000	USD
CY2019Q3	us-gaap	Benefits Losses And Expenses BenefitsLossesAndExpenses	215422000	USD
CY2019Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-15312000	USD
CY2019Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-213000	USD
CY2019Q3	us-gaap	Net Income Loss NetIncomeLoss	-15099000	USD
	us-gaap	Assumed Premiums Written AssumedPremiumsWritten	497616000	USD
	us-gaap	Ceded Premiums Written CededPremiumsWritten	3301000	USD
	us-gaap	Premiums Written Net PremiumsWrittenNet	494315000	USD
	us-gaap	Increase Decrease In Unearned Premiums Net IncreaseDecreaseInUnearnedPremiumsNet	7435000	USD
	us-gaap	Premiums Earned Net PremiumsEarnedNet	501750000	USD
	tpre	Investment Income InvestmentIncome	220946000	USD
	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	0	USD
	us-gaap	Revenues Revenues	722696000	USD
	us-gaap	Incurred Claims Property Casualty And Liability IncurredClaimsPropertyCasualtyAndLiability	263105000	USD
	us-gaap	Deferred Policy Acquisition Cost Amortization Expense DeferredPolicyAcquisitionCostAmortizationExpense	233775000	USD
	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	41019000	USD
	us-gaap	Other Operating Income Expense Net OtherOperatingIncomeExpenseNet	-12994000	USD
	us-gaap	Interest Expense InterestExpense	6154000	USD
	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	6663000	USD
	us-gaap	Benefits Losses And Expenses BenefitsLossesAndExpenses	550384000	USD
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	172312000	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	1431000	USD
	us-gaap	Net Income Loss NetIncomeLoss	170881000	USD
	us-gaap	Profit Loss ProfitLoss	9100000	USD
	tpre	Equityin Earningsof Consolidated Subsidiaries EquityinEarningsofConsolidatedSubsidiaries	0	USD
	us-gaap	Share Based Compensation ShareBasedCompensation	4678000	USD
	us-gaap	Interest Expense Domestic Deposit Liabilities InterestExpenseDomesticDepositLiabilities	-95000	USD
	us-gaap	Net Realized Or Unrealized Gain Loss On Trading Securities NetRealizedOrUnrealizedGainLossOnTradingSecurities	56799000	USD
	tpre	Net Realizedand Unrealized Gain Losson Trading Securitiesrelatedpartyinvestmentfund NetRealizedandUnrealizedGainLossonTradingSecuritiesrelatedpartyinvestmentfund	8341000	USD
	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	3129000	USD
	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	1986000	USD
	us-gaap	Increase Decrease In Premiums Receivable IncreaseDecreaseInPremiumsReceivable	-22930000	USD
	us-gaap	Increase Decrease In Deferred Policy Acquisition Costs IncreaseDecreaseInDeferredPolicyAcquisitionCosts	-11871000	USD
	us-gaap	Increase Decrease In Prepaid Reinsurance Premiums IncreaseDecreaseInPrepaidReinsurancePremiums	10518000	USD
	us-gaap	Increase Decrease In Reinsurance Recoverable IncreaseDecreaseInReinsuranceRecoverable	8106000	USD
	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-660000	USD
	us-gaap	Increase Decrease In Interest And Dividends Receivable IncreaseDecreaseInInterestAndDividendsReceivable	3645000	USD
	us-gaap	Increase Decrease In Interest And Dividends Receivable IncreaseDecreaseInInterestAndDividendsReceivable	1602000	USD
	us-gaap	Increase Decrease In Unearned Premiums IncreaseDecreaseInUnearnedPremiums	-25875000	USD
	us-gaap	Increase Decrease In Liability For Claims And Claims Adjustment Expense Reserve IncreaseDecreaseInLiabilityForClaimsAndClaimsAdjustmentExpenseReserve	77823000	USD
	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	-3853000	USD
	us-gaap	Increase Decrease In Reinsurance Payables IncreaseDecreaseInReinsurancePayables	38523000	USD
	us-gaap	Increase Decrease In Due To Affiliates IncreaseDecreaseInDueToAffiliates	0	USD
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	45281000	USD
	us-gaap	Payments To Acquire Trading Securities Heldforinvestment PaymentsToAcquireTradingSecuritiesHeldforinvestment	444111000	USD
	us-gaap	Proceeds From Payments For Trading Securities ProceedsFromPaymentsForTradingSecurities	441611000	USD
	us-gaap	Payments For Derivative Instrument Investing Activities PaymentsForDerivativeInstrumentInvestingActivities	129000	USD
	us-gaap	Proceeds From Derivative Instrument Investing Activities ProceedsFromDerivativeInstrumentInvestingActivities	15721000	USD
	us-gaap	Increase Decrease In Payables To Broker Dealers IncreaseDecreaseInPayablesToBrokerDealers	-81142000	USD
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-68050000	USD
	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	302000	USD
	tpre	Increase Decreasein Deposit Contracts Liabilities IncreaseDecreaseinDepositContractsLiabilities	-16431000	USD
	us-gaap	Proceeds From Payments To Minority Shareholders ProceedsFromPaymentsToMinorityShareholders	1020000	USD
	us-gaap	Cash Dividends Paid To Parent Company By Consolidated Subsidiaries CashDividendsPaidToParentCompanyByConsolidatedSubsidiaries	0	USD
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-15713000	USD
	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-38482000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	1653958000	USD
CY2020Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	1615476000	USD
	us-gaap	Profit Loss ProfitLoss	170881000	USD
	tpre	Equityin Earningsof Consolidated Subsidiaries EquityinEarningsofConsolidatedSubsidiaries	0	USD
	us-gaap	Share Based Compensation ShareBasedCompensation	6306000	USD
	us-gaap	Interest Expense Domestic Deposit Liabilities InterestExpenseDomesticDepositLiabilities	4980000	USD
	us-gaap	Net Realized Or Unrealized Gain Loss On Trading Securities NetRealizedOrUnrealizedGainLossOnTradingSecurities	2177000	USD
	tpre	Net Realizedand Unrealized Gain Losson Trading Securitiesrelatedpartyinvestmentfund NetRealizedandUnrealizedGainLossonTradingSecuritiesrelatedpartyinvestmentfund	207597000	USD
	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	6663000	USD
	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	231000	USD
	us-gaap	Increase Decrease In Premiums Receivable IncreaseDecreaseInPremiumsReceivable	50711000	USD
	us-gaap	Increase Decrease In Deferred Policy Acquisition Costs IncreaseDecreaseInDeferredPolicyAcquisitionCosts	-36874000	USD
	us-gaap	Increase Decrease In Prepaid Reinsurance Premiums IncreaseDecreaseInPrepaidReinsurancePremiums	-3182000	USD
	us-gaap	Increase Decrease In Reinsurance Recoverable IncreaseDecreaseInReinsuranceRecoverable	2239000	USD
	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-2827000	USD
	tpre	Increase Decreasein Deposit Contracts Liabilities IncreaseDecreaseinDepositContractsLiabilities	6924000	USD
	us-gaap	Increase Decrease In Unearned Premiums IncreaseDecreaseInUnearnedPremiums	-10617000	USD
	us-gaap	Increase Decrease In Liability For Claims And Claims Adjustment Expense Reserve IncreaseDecreaseInLiabilityForClaimsAndClaimsAdjustmentExpenseReserve	119129000	USD
	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	7346000	USD
	us-gaap	Increase Decrease In Reinsurance Payables IncreaseDecreaseInReinsurancePayables	29052000	USD
	us-gaap	Increase Decrease In Due To Affiliates IncreaseDecreaseInDueToAffiliates	0	USD
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	96697000	USD
	tpre	Proceedsfrom Trading Securities Heldfor Investment Related Party Investment Fund ProceedsfromTradingSecuritiesHeldforInvestmentRelatedPartyInvestmentFund	760000000	USD
	tpre	Paymentsto Acquire Trading Securities Heldfor Investment Related Party Investment Fund PaymentstoAcquireTradingSecuritiesHeldforInvestmentRelatedPartyInvestmentFund	87000000	USD
	tpre	Increasedecreasein Participation Agreementwith Related Party Investment Fund IncreasedecreaseinParticipationAgreementwithRelatedPartyInvestmentFund	-2297000	USD
	us-gaap	Payments To Acquire Trading Securities Heldforinvestment PaymentsToAcquireTradingSecuritiesHeldforinvestment	330963000	USD
	us-gaap	Proceeds From Payments For Trading Securities ProceedsFromPaymentsForTradingSecurities	349696000	USD
	us-gaap	Increase Decrease In Payables To Broker Dealers IncreaseDecreaseInPayablesToBrokerDealers	1411000	USD
	tpre	Contributed Capital To Subsidiaries ContributedCapitalToSubsidiaries	0	USD
	us-gaap	Proceeds From Contributed Capital ProceedsFromContributedCapital	0	USD
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	690847000	USD
	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	-1887000	USD
	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	68000	USD
	us-gaap	Cash Dividends Paid To Parent Company By Consolidated Subsidiaries CashDividendsPaidToParentCompanyByConsolidatedSubsidiaries	0	USD
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	8743000	USD
	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	796287000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	713337000	USD
CY2019Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	1509624000	USD

Files In Submission

Name	View Source	Status
0001576018-20-000162-index-headers.html	Edgar Link	pending
0001576018-20-000162-index.html	Edgar Link	pending
0001576018-20-000162.txt	Edgar Link	pending
0001576018-20-000162-xbrl.zip	Edgar Link	pending
creditagreement.htm	Edgar Link	pending
davidjuniusofferletter.htm	Edgar Link	pending
davidjuniusrestricteds.htm	Edgar Link	pending
exhibit311093020.htm	Edgar Link	pending
exhibit312093020.htm	Edgar Link	pending
exhibit321093020.htm	Edgar Link	pending
exhibit322093020.htm	Edgar Link	pending
FilingSummary.xml	Edgar Link	unprocessable
Financial_Report.xlsx	Edgar Link	pending
image_01a.jpg	Edgar Link	pending
MetaLinks.json	Edgar Link	pending
R1.htm	Edgar Link	pending
R10.htm	Edgar Link	pending
R11.htm	Edgar Link	pending
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R3.htm	Edgar Link	pending
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R78.htm	Edgar Link	pending
R8.htm	Edgar Link	pending
R9.htm	Edgar Link	pending
report.css	Edgar Link	pending
Show.js	Edgar Link	pending
sidsankaranemploymenta.htm	Edgar Link	pending
sidsankaranrestricteds.htm	Edgar Link	pending
tpre-20200930.htm	Edgar Link	pending
tpre-20200930.xsd	Edgar Link	pending
tpre-20200930_cal.xml	Edgar Link	unprocessable
tpre-20200930_def.xml	Edgar Link	unprocessable
tpre-20200930_htm.xml	Edgar Link	completed
tpre-20200930_lab.xml	Edgar Link	unprocessable
tpre-20200930_pre.xml	Edgar Link	unprocessable

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$SPNT
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2020 Q3 Form 10-Q Financial Statement

#000157601820000162 Filed on November 05, 2020

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$SPNT SiriusPoint Ltd Stock $spnt

2020 Q3 Form 10-Q Financial Statement

#000157601820000162 Filed on November 05, 2020

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$SPNT
SiriusPoint Ltd Stock $spnt