$SPNT
SiriusPoint Ltd Stock $spnt

$spnt Overview Financials Valuation SEC Filings Company Website

2024 Q1 Form 10-K Financial Statement

#000157601824000018 Filed on February 29, 2024

Income Statement

Concept	2024 Q1	2023 Q4	2023
Revenue	$685.5M	$645.8M	$2.737B
YoY Change	0.09%	-4.13%	30.0%
Cost Of Revenue			$1.381B
YoY Change			-13.04%
Gross Profit			$1.356B
YoY Change			162.18%
Gross Profit Margin			49.54%
Selling, General & Admin
YoY Change
% of Gross Profit
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$2.900M	$2.900M	$11.10M
YoY Change	20.83%	-23.68%	-20.14%
% of Gross Profit			0.82%
Operating Expenses	$563.1M	$608.7M	$2.320B
YoY Change	11.9%	-5.51%	-9.24%
Operating Profit			-$963.6M
YoY Change			-52.73%
Interest Expense	$20.50M	-$39.00M	$64.10M
YoY Change	89.81%	-45.83%	66.06%
% of Operating Profit
Other Income/Expense, Net
YoY Change
Pretax Income	$105.6M	-$1.900M	$318.7M
YoY Change	-38.17%	-95.54%	-175.4%
Income Tax	$9.700M	-$101.6M	-$45.00M
% Of Pretax Income	9.19%		-14.12%
Net Earnings	$94.80M	$93.50M	$354.8M
YoY Change	-33.52%	-451.5%	-191.73%
Net Earnings / Revenue	13.83%	14.48%	12.96%
Basic Earnings Per Share	$0.50		$1.93
Diluted Earnings Per Share	$0.49	$0.54	$1.85
COMMON SHARES
Basic Shares Outstanding	169.8M shares	167.6M shares	163.3M shares
Diluted Shares Outstanding	174.4M shares		169.6M shares

Balance Sheet

Concept	2024 Q1	2023 Q4	2023
SHORT-TERM ASSETS
Cash & Short-Term Investments
YoY Change
Cash & Equivalents	$867.5M	$969.2M	$969.2M
Short-Term Investments
Other Short-Term Assets
YoY Change
Inventory
Prepaid Expenses
Receivables
Other Receivables
Total Short-Term Assets		$3.000M	$3.000M
YoY Change		-83.78%	-83.78%
LONG-TERM ASSETS
Property, Plant & Equipment	$24.20M	$25.60M	$25.60M
YoY Change	0.41%	-1.16%	-1.16%
Goodwill
YoY Change
Intangibles	$149.8M	$152.7M
YoY Change	-7.47%	-6.78%
Long-Term Investments	$6.197B	$6.078B	$6.078B
YoY Change	7.56%	7.5%	7.5%
Other Assets	$509.6M	$425.7M	$425.7M
YoY Change	31.78%	4.16%	4.16%
Total Long-Term Assets		$12.87B	$12.87B
YoY Change		16.8%	16.8%
TOTAL ASSETS
Total Short-Term Assets		$3.000M	$3.000M
Total Long-Term Assets		$12.87B	$12.87B
Total Assets	$13.14B	$12.87B	$12.87B
YoY Change	11.25%	16.63%	16.63%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$335.9M	$278.1M	$278.1M
YoY Change	35.66%	17.69%	17.69%
Accrued Expenses	$26.60M	$28.40M	$28.40M
YoY Change	-5.34%	-6.27%	-6.27%
Deferred Revenue
YoY Change
Short-Term Debt	$0.00	$0.00	$0.00
YoY Change
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities	$396.6M	$284.3M	$284.3M
YoY Change	18.11%	6.64%	6.64%
LONG-TERM LIABILITIES
Long-Term Debt	$770.6M	$786.2M	$786.2M
YoY Change	-1.1%	1.05%	1.05%
Other Long-Term Liabilities	$237.8M	$229.6M	$229.6M
YoY Change	26.35%	14.29%	14.29%
Total Long-Term Liabilities	$1.008B	$1.016B	$1.016B
YoY Change	4.24%	3.77%	3.77%
TOTAL LIABILITIES
Total Short-Term Liabilities	$396.6M	$284.3M	$284.3M
Total Long-Term Liabilities	$1.008B	$1.016B	$1.016B
Total Liabilities	$10.52B	$10.34B	$10.36B
YoY Change	10.0%	15.49%	15.58%
SHAREHOLDERS EQUITY
Retained Earnings	$691.8M	$601.0M
YoY Change	72.6%	129.21%
Common Stock	$17.00M	$16.80M
YoY Change	4.94%	3.7%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$2.603B	$2.514B	$2.514B
YoY Change
Total Liabilities & Shareholders Equity	$13.14B	$12.87B	$12.87B
YoY Change	11.25%	16.63%	16.63%

Cashflow Statement

Concept	2024 Q1	2023 Q4	2023
OPERATING ACTIVITIES
Net Income	$94.80M	$93.50M	$354.8M
YoY Change	-33.52%	-451.5%	-191.73%
Depreciation, Depletion And Amortization	$2.900M	$2.900M	$11.10M
YoY Change	20.83%	-23.68%	-20.14%
Cash From Operating Activities	$55.80M	$213.4M	$581.3M
YoY Change	-40.76%	213.82%	98.19%
INVESTING ACTIVITIES
Capital Expenditures
YoY Change
Acquisitions
YoY Change
Other Investing Activities	-$77.80M	$63.10M	-$332.2M
YoY Change	-1375.41%	5.87%	-74.53%
Cash From Investing Activities	-$77.80M	$63.10M	-$332.2M
YoY Change	-1375.41%	5.87%	-74.53%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net			$0.00
YoY Change			-100.0%
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	$7.100M	13.60M	-$61.50M
YoY Change	-118.02%	-351.85%	159.49%
NET CHANGE
Cash From Operating Activities	$55.80M	213.4M	$581.3M
Cash From Investing Activities	-$77.80M	63.10M	-$332.2M
Cash From Financing Activities	$7.100M	13.60M	-$61.50M
Net Change In Cash	-$14.90M	290.1M	$187.6M
YoY Change	-124.47%	137.4%	-118.13%
FREE CASH FLOW
Cash From Operating Activities	$55.80M	$213.4M	$581.3M
Capital Expenditures
Free Cash Flow
YoY Change

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2023	spnt	Segment Income Loss SegmentIncomeLoss	375900000	usd
CY2023	us-gaap	Other Income OtherIncome	38400000	usd
CY2023	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	11100000	usd
CY2023	us-gaap	Interest Expense InterestExpense	64100000	usd
CY2023	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	-34900000	usd
CY2023	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	318700000	usd
CY2023	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-45000000.0	usd
CY2023	us-gaap	Profit Loss ProfitLoss	363700000	usd
CY2023	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	8900000	usd
CY2023	us-gaap	Net Income Loss NetIncomeLoss	354800000	usd
CY2023	us-gaap	Loss Ratio LossRatio	0.569
CY2023	us-gaap	Acquisition Cost Ratio AcquisitionCostRatio	0.195
CY2023	us-gaap	Underwriting Expense Ratio UnderwritingExpenseRatio	0.081
CY2023	us-gaap	Combined Ratio CombinedRatio	0.845
CY2022	us-gaap	Premiums Written Gross PremiumsWrittenGross	3409700000	usd
CY2022	us-gaap	Premiums Written Net PremiumsWrittenNet	2549200000	usd
CY2022	us-gaap	Premiums Earned Net PremiumsEarnedNet	2318100000	usd
CY2022	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Incurred Claims1 LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredClaims1	1588400000	usd
CY2022	us-gaap	Deferred Policy Acquisition Costs And Present Value Of Future Profits Amortization1 DeferredPolicyAcquisitionCostsAndPresentValueOfFutureProfitsAmortization1	461900000	usd
CY2022	us-gaap	Underwriting Income Loss UnderwritingIncomeLoss	83300000	usd
CY2023	us-gaap	Benefits Losses And Expenses BenefitsLossesAndExpenses	2418600000	usd
CY2022	us-gaap	Benefits Losses And Expenses BenefitsLossesAndExpenses	2528300000	usd
CY2022	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-422700000	usd
CY2021	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	45100000	usd
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-10700000	usd
CY2021Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	1948400000	usd
CY2022	us-gaap	Net Investment Income NetInvestmentIncome	113300000	usd
CY2020Q4	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Net LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseNet	1289700000	usd
CY2023	us-gaap	Supplemental Information For Property Casualty Insurance Underwriters Prior Year Claims And Claims Adjustment Expense SupplementalInformationForPropertyCasualtyInsuranceUnderwritersPriorYearClaimsAndClaimsAdjustmentExpense	-174200000	usd
CY2021	us-gaap	Supplemental Information For Property Casualty Insurance Underwriters Prior Year Claims And Claims Adjustment Expense SupplementalInformationForPropertyCasualtyInsuranceUnderwritersPriorYearClaimsAndClaimsAdjustmentExpense	-42600000	usd
CY2023	dei	Entity Central Index Key EntityCentralIndexKey	0001576018
CY2023	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2023
CY2023	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2023	dei	Amendment Flag AmendmentFlag	false
CY2023Q4	us-gaap	Debt Securities Available For Sale Amortized Cost Excluding Accrued Interest After Allowance For Credit Loss DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestAfterAllowanceForCreditLoss	4754600000	usd
CY2022Q4	us-gaap	Debt Securities Available For Sale Amortized Cost Excluding Accrued Interest After Allowance For Credit Loss DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestAfterAllowanceForCreditLoss	2678100000	usd
CY2023Q4	us-gaap	Debt Securities Available For Sale Amortized Cost Allowance For Credit Loss Excluding Accrued Interest DebtSecuritiesAvailableForSaleAmortizedCostAllowanceForCreditLossExcludingAccruedInterest	0	usd
CY2022Q4	us-gaap	Debt Securities Available For Sale Amortized Cost Allowance For Credit Loss Excluding Accrued Interest DebtSecuritiesAvailableForSaleAmortizedCostAllowanceForCreditLossExcludingAccruedInterest	0.0	usd
CY2023Q4	us-gaap	Trading Securities Debt Amortized Cost TradingSecuritiesDebtAmortizedCost	568100000	usd
CY2022Q4	us-gaap	Trading Securities Debt Amortized Cost TradingSecuritiesDebtAmortizedCost	1630100000	usd
CY2023Q4	spnt	Other Short Term Investments Cost OtherShortTermInvestmentsCost	370800000	usd
CY2022Q4	spnt	Other Short Term Investments Cost OtherShortTermInvestmentsCost	984500000	usd
CY2023Q4	spnt	Other Long Term Investments Cost OtherLongTermInvestmentsCost	367200000	usd
CY2022Q4	spnt	Other Long Term Investments Cost OtherLongTermInvestmentsCost	392000000.0	usd
CY2023Q4	spnt	Other Long Term Investments Related Parties OtherLongTermInvestmentsRelatedParties	173700000	usd
CY2022Q4	spnt	Other Long Term Investments Related Parties OtherLongTermInvestmentsRelatedParties	201200000	usd
CY2023Q4	us-gaap	Equity Securities Fv Ni Cost EquitySecuritiesFvNiCost	1900000	usd
CY2022Q4	us-gaap	Equity Securities Fv Ni Cost EquitySecuritiesFvNiCost	1800000	usd
CY2023Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	168120022	shares
CY2022Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	162177653	shares
CY2023Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	168120022	shares
CY2022Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	162177653	shares
CY2021	us-gaap	Cash Acquired From Acquisition CashAcquiredFromAcquisition	740300000	usd
CY2021	us-gaap	Business Combination Bargain Purchase Gain Recognized Statement Of Income Or Comprehensive Income Extensible Enumeration BusinessCombinationBargainPurchaseGainRecognizedStatementOfIncomeOrComprehensiveIncomeExtensibleEnumeration	http://fasb.org/us-gaap/2023#OtherIncome
CY2023	us-gaap	Fair Value Recurring Basis Unobservable Input Reconciliation Liability Gain Loss Statement Of Income Extensible List FairValueRecurringBasisUnobservableInputReconciliationLiabilityGainLossStatementOfIncomeExtensibleList	http://siriuspt.com/20231231#NetInvestmentIncomeLossAndGainLossOnInvestments
CY2023	us-gaap	Fair Value Recurring Basis Unobservable Input Reconciliation Asset Gain Loss Statement Of Income Extensible List FairValueRecurringBasisUnobservableInputReconciliationAssetGainLossStatementOfIncomeExtensibleList	http://siriuspt.com/20231231#NetInvestmentIncomeLossAndGainLossOnInvestments
CY2022	us-gaap	Fair Value Recurring Basis Unobservable Input Reconciliation Asset Gain Loss Statement Of Income Extensible List FairValueRecurringBasisUnobservableInputReconciliationAssetGainLossStatementOfIncomeExtensibleList	http://siriuspt.com/20231231#NetInvestmentIncomeLossAndGainLossOnInvestments
CY2022	us-gaap	Fair Value Recurring Basis Unobservable Input Reconciliation Liability Gain Loss Statement Of Income Extensible List FairValueRecurringBasisUnobservableInputReconciliationLiabilityGainLossStatementOfIncomeExtensibleList	http://siriuspt.com/20231231#NetInvestmentIncomeLossAndGainLossOnInvestments
CY2023Q4	us-gaap	Investment Type Extensible Enumeration InvestmentTypeExtensibleEnumeration	http://fasb.org/us-gaap/2023#OtherLongTermInvestments
CY2021Q4	us-gaap	Investment Type Extensible Enumeration InvestmentTypeExtensibleEnumeration	http://fasb.org/us-gaap/2023#OtherLongTermInvestments
CY2022Q4	us-gaap	Investment Type Extensible Enumeration InvestmentTypeExtensibleEnumeration	http://fasb.org/us-gaap/2023#OtherLongTermInvestments
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CY2022Q4	us-gaap	Investment Type Extensible Enumeration InvestmentTypeExtensibleEnumeration	http://fasb.org/us-gaap/2023#OtherLongTermInvestments
CY2023Q4	us-gaap	Investment Type Extensible Enumeration InvestmentTypeExtensibleEnumeration	http://fasb.org/us-gaap/2023#OtherLongTermInvestments
CY2023Q4	us-gaap	Derivative Asset Statement Of Financial Position Extensible Enumeration DerivativeAssetStatementOfFinancialPositionExtensibleEnumeration	http://fasb.org/us-gaap/2023#OtherAssets
CY2022Q4	us-gaap	Derivative Asset Statement Of Financial Position Extensible Enumeration DerivativeAssetStatementOfFinancialPositionExtensibleEnumeration	http://fasb.org/us-gaap/2023#OtherAssets
CY2022Q4	us-gaap	Derivative Liability Statement Of Financial Position Extensible Enumeration DerivativeLiabilityStatementOfFinancialPositionExtensibleEnumeration	http://fasb.org/us-gaap/2023#AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent
CY2023Q4	us-gaap	Derivative Liability Statement Of Financial Position Extensible Enumeration DerivativeLiabilityStatementOfFinancialPositionExtensibleEnumeration	http://fasb.org/us-gaap/2023#AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent
CY2022Q4	us-gaap	Operating Lease Right Of Use Asset Statement Of Financial Position Extensible List OperatingLeaseRightOfUseAssetStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2023#OtherAssets
CY2023Q4	us-gaap	Operating Lease Right Of Use Asset Statement Of Financial Position Extensible List OperatingLeaseRightOfUseAssetStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2023#OtherAssets
CY2022Q4	us-gaap	Operating Lease Liability Statement Of Financial Position Extensible List OperatingLeaseLiabilityStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2023#AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent
CY2023Q4	us-gaap	Operating Lease Liability Statement Of Financial Position Extensible List OperatingLeaseLiabilityStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2023#AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent
CY2023	dei	Document Annual Report DocumentAnnualReport	true
CY2023	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2023	dei	Document Transition Report DocumentTransitionReport	false
CY2023	dei	Entity File Number EntityFileNumber	001-36052
CY2023	dei	Entity Registrant Name EntityRegistrantName	SIRIUSPOINT LTD.
CY2023	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	D0
CY2023	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	98-1599372
CY2023	dei	Entity Address Address Line1 EntityAddressAddressLine1	Point Building
CY2023	dei	Entity Address Address Line2 EntityAddressAddressLine2	3 Waterloo Lane
CY2023	dei	Entity Address City Or Town EntityAddressCityOrTown	Pembroke
CY2023	dei	Entity Address Country EntityAddressCountry	BM
CY2023	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	HM 08
CY2023	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	Yes
CY2023	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2023	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2023	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
CY2023	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
CY2023	dei	Entity Small Business EntitySmallBusiness	false
CY2023	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
CY2023	dei	Icfr Auditor Attestation Flag IcfrAuditorAttestationFlag	true
CY2023	dei	Document Fin Stmt Error Correction Flag DocumentFinStmtErrorCorrectionFlag	false
CY2023	dei	Entity Shell Company EntityShellCompany	false
CY2023Q2	dei	Entity Public Float EntityPublicFloat	815100000	usd
CY2024Q1	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	169797720	shares
CY2023	ecd	Non Rule10b51 Arr Adopted Flag NonRule10b51ArrAdoptedFlag	false
CY2023	ecd	Rule10b51 Arr Adopted Flag Rule10b51ArrAdoptedFlag	false
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CY2022	dei	Auditor Firm AuditorFirmId	238
CY2023	dei	Auditor Firm AuditorFirmId	238
CY2023	dei	Auditor Name AuditorName	PricewaterhouseCoopers LLP
CY2022	dei	Auditor Name AuditorName	PricewaterhouseCoopers LLP
CY2022	dei	Auditor Location AuditorLocation	New York, New York
CY2023	dei	Auditor Location AuditorLocation	New York, New York
CY2023Q4	us-gaap	Debt Securities Available For Sale Excluding Accrued Interest DebtSecuritiesAvailableForSaleExcludingAccruedInterest	4755400000	usd
CY2022Q4	us-gaap	Debt Securities Available For Sale Excluding Accrued Interest DebtSecuritiesAvailableForSaleExcludingAccruedInterest	2635500000	usd
CY2023Q4	us-gaap	Trading Securities Debt TradingSecuritiesDebt	534900000	usd
CY2022Q4	us-gaap	Trading Securities Debt TradingSecuritiesDebt	1526000000	usd
CY2023Q4	us-gaap	Other Short Term Investments OtherShortTermInvestments	371600000	usd
CY2022Q4	us-gaap	Other Short Term Investments OtherShortTermInvestments	984600000	usd
CY2023Q4	spnt	Investments In Related Party Investment Funds InvestmentsInRelatedPartyInvestmentFunds	105600000	usd
CY2022Q4	spnt	Investments In Related Party Investment Funds InvestmentsInRelatedPartyInvestmentFunds	128800000	usd
CY2023Q4	us-gaap	Other Long Term Investments OtherLongTermInvestments	308500000	usd
CY2022Q4	us-gaap	Other Long Term Investments OtherLongTermInvestments	377200000	usd
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CY2023Q4	srt	Payables To Broker Dealers And Clearing Organizations PayablesToBrokerDealersAndClearingOrganizations	6200000	usd
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CY2022Q4	us-gaap	Accounts Payable And Accrued Liabilities Current And Noncurrent AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent	266600000	usd
CY2023Q4	us-gaap	Liabilities Liabilities	10340900000	usd
CY2022Q4	us-gaap	Liabilities Liabilities	8953700000	usd
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CY2021	us-gaap	Net Investment Income NetInvestmentIncome	25400000	usd
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CY2022	spnt	Gain Loss On Investments Related Party GainLossOnInvestmentsRelatedParty	-210500000	usd
CY2021	spnt	Gain Loss On Investments Related Party GainLossOnInvestmentsRelatedParty	304000000.0	usd
CY2023	spnt	Net Investment Income Loss And Gain Loss On Investments NetInvestmentIncomeLossAndGainLossOnInvestments	272700000	usd
CY2022	spnt	Net Investment Income Loss And Gain Loss On Investments NetInvestmentIncomeLossAndGainLossOnInvestments	-322700000	usd
CY2021	spnt	Net Investment Income Loss And Gain Loss On Investments NetInvestmentIncomeLossAndGainLossOnInvestments	312500000	usd
CY2023	us-gaap	Other Income OtherIncome	38400000	usd
CY2022	us-gaap	Other Income OtherIncome	110200000	usd
CY2021	us-gaap	Other Income OtherIncome	151200000	usd
CY2023	us-gaap	Revenues Revenues	2737300000	usd
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CY2023	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Incurred Claims1 LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredClaims1	1381300000	usd
CY2022	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Incurred Claims1 LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredClaims1	1588400000	usd
CY2021	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Incurred Claims1 LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredClaims1	1326500000	usd
CY2023	us-gaap	Deferred Policy Acquisition Costs And Present Value Of Future Profits Amortization1 DeferredPolicyAcquisitionCostsAndPresentValueOfFutureProfitsAmortization1	472700000	usd
CY2022	us-gaap	Deferred Policy Acquisition Costs And Present Value Of Future Profits Amortization1 DeferredPolicyAcquisitionCostsAndPresentValueOfFutureProfitsAmortization1	461900000	usd
CY2021	us-gaap	Deferred Policy Acquisition Costs And Present Value Of Future Profits Amortization1 DeferredPolicyAcquisitionCostsAndPresentValueOfFutureProfitsAmortization1	387800000	usd
CY2023	us-gaap	Other Underwriting Expense OtherUnderwritingExpense	196300000	usd
CY2022	us-gaap	Other Underwriting Expense OtherUnderwritingExpense	184500000	usd
CY2021	us-gaap	Other Underwriting Expense OtherUnderwritingExpense	158800000	usd
CY2023	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	258200000	usd
CY2022	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	312800000	usd
CY2021	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	266600000	usd
CY2023	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	11100000	usd
CY2022	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	8100000	usd
CY2021	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	5900000	usd
CY2023	us-gaap	Interest Expense InterestExpense	64100000	usd
CY2022	us-gaap	Interest Expense InterestExpense	38600000	usd
CY2021	us-gaap	Interest Expense InterestExpense	34000000.0	usd
CY2023	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	-34900000	usd
CY2022	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	66000000.0	usd
CY2021	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	44000000.0	usd
CY2021	us-gaap	Benefits Losses And Expenses BenefitsLossesAndExpenses	2135600000	usd
CY2023	us-gaap	Undistributed Earnings Diluted UndistributedEarningsDiluted	338800000	usd
CY2022	us-gaap	Undistributed Earnings UndistributedEarnings	-402800000	usd
CY2022	us-gaap	Undistributed Earnings Diluted UndistributedEarningsDiluted	-402800000	usd
CY2021	us-gaap	Undistributed Earnings UndistributedEarnings	44600000	usd
CY2023	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.93
CY2022	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-2.51
CY2021	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.28
CY2023	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.85
CY2022	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-2.51
CY2021	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.27
CY2023	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	163341448	shares
CY2022	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	160228588	shares
CY2021	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	148667770	shares
CY2023	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	169607348	shares
CY2022	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	160228588	shares
CY2021	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	150156466	shares
CY2023	us-gaap	Profit Loss ProfitLoss	363700000	usd
CY2022	us-gaap	Profit Loss ProfitLoss	-386000000.0	usd
CY2021	us-gaap	Profit Loss ProfitLoss	55800000	usd
CY2023	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	1100000	usd
CY2022	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	-5000000.0	usd
CY2021	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	-200000	usd
CY2023	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	38900000	usd
CY2022	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	-42500000	usd
CY2021	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	0	usd
CY2023	us-gaap	Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax	-8100000	usd
CY2022	us-gaap	Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax	-2700000	usd
CY2021	us-gaap	Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax	0	usd
CY2023	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	48100000	usd
CY2022	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-44800000	usd
CY2021	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-200000	usd
CY2023	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	411800000	usd
CY2022	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	-430800000	usd
CY2021	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	55600000	usd
CY2023	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	8900000	usd
CY2022	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	800000	usd
CY2021	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	-2300000	usd
CY2023	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	402900000	usd
CY2022	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-431600000	usd
CY2021	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	57900000	usd
CY2023Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	2530600000	usd
CY2022Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	2082600000	usd
CY2021Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	2503300000	usd
CY2023	us-gaap	Profit Loss ProfitLoss	363700000	usd
CY2022	us-gaap	Profit Loss ProfitLoss	-386000000.0	usd
CY2021	us-gaap	Profit Loss ProfitLoss	55800000	usd
CY2023	us-gaap	Share Based Compensation ShareBasedCompensation	21400000	usd
CY2022	us-gaap	Share Based Compensation ShareBasedCompensation	30500000	usd
CY2021	us-gaap	Share Based Compensation ShareBasedCompensation	11400000	usd
CY2023	spnt	Realized And Unrealized Gain Loss On Investments And Derivatives RealizedAndUnrealizedGainLossOnInvestmentsAndDerivatives	-5900000	usd
CY2022	spnt	Realized And Unrealized Gain Loss On Investments And Derivatives RealizedAndUnrealizedGainLossOnInvestmentsAndDerivatives	-207600000	usd
CY2021	spnt	Realized And Unrealized Gain Loss On Investments And Derivatives RealizedAndUnrealizedGainLossOnInvestmentsAndDerivatives	-3000000.0	usd
CY2023	spnt	Gain Loss On Investments Related Party GainLossOnInvestmentsRelatedParty	-1000000.0	usd
CY2022	spnt	Gain Loss On Investments Related Party GainLossOnInvestmentsRelatedParty	-210500000	usd
CY2021	spnt	Gain Loss On Investments Related Party GainLossOnInvestmentsRelatedParty	304000000.0	usd
CY2023	spnt	Other Revenue Noncash OtherRevenueNoncash	-59400000	usd
CY2022	spnt	Other Revenue Noncash OtherRevenueNoncash	27400000	usd
CY2021	spnt	Other Revenue Noncash OtherRevenueNoncash	100100000	usd
CY2023	us-gaap	Gain Loss On Sale Of Business GainLossOnSaleOfBusiness	0	usd
CY2022	us-gaap	Gain Loss On Sale Of Business GainLossOnSaleOfBusiness	0	usd
CY2021	us-gaap	Gain Loss On Sale Of Business GainLossOnSaleOfBusiness	5800000	usd
CY2023	spnt	Accretion Amortization Of Discounts And Premiums AccretionAmortizationOfDiscountsAndPremiums	67100000	usd
CY2022	spnt	Accretion Amortization Of Discounts And Premiums AccretionAmortizationOfDiscountsAndPremiums	17200000	usd
CY2021	spnt	Accretion Amortization Of Discounts And Premiums AccretionAmortizationOfDiscountsAndPremiums	-9500000	usd
CY2023	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	11100000	usd
CY2022	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	8100000	usd
CY2021	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	5900000	usd
CY2023	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-23700000	usd
CY2022	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	28000000.0	usd
CY2021	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	16500000	usd
CY2023	us-gaap	Increase Decrease In Premiums Receivable IncreaseDecreaseInPremiumsReceivable	84300000	usd
CY2022	us-gaap	Increase Decrease In Premiums Receivable IncreaseDecreaseInPremiumsReceivable	164700000	usd
CY2021	us-gaap	Increase Decrease In Premiums Receivable IncreaseDecreaseInPremiumsReceivable	48300000	usd
CY2023	spnt	Increase Decrease In Deferred Policy Acquisition Costs And Present Value Of Future Insurance Profits IncreaseDecreaseInDeferredPolicyAcquisitionCostsAndPresentValueOfFutureInsuranceProfits	14000000.0	usd
CY2022	spnt	Increase Decrease In Deferred Policy Acquisition Costs And Present Value Of Future Insurance Profits IncreaseDecreaseInDeferredPolicyAcquisitionCostsAndPresentValueOfFutureInsuranceProfits	76100000	usd
CY2021	spnt	Increase Decrease In Deferred Policy Acquisition Costs And Present Value Of Future Insurance Profits IncreaseDecreaseInDeferredPolicyAcquisitionCostsAndPresentValueOfFutureInsuranceProfits	2300000	usd
CY2023	us-gaap	Increase Decrease In Prepaid Reinsurance Premiums IncreaseDecreaseInPrepaidReinsurancePremiums	100400000	usd
CY2022	us-gaap	Increase Decrease In Prepaid Reinsurance Premiums IncreaseDecreaseInPrepaidReinsurancePremiums	106000000.0	usd
CY2021	us-gaap	Increase Decrease In Prepaid Reinsurance Premiums IncreaseDecreaseInPrepaidReinsurancePremiums	33300000	usd
CY2023	us-gaap	Increase Decrease In Reinsurance Recoverable IncreaseDecreaseInReinsuranceRecoverable	918900000	usd
CY2022	us-gaap	Increase Decrease In Reinsurance Recoverable IncreaseDecreaseInReinsuranceRecoverable	160900000	usd
CY2021	us-gaap	Increase Decrease In Reinsurance Recoverable IncreaseDecreaseInReinsuranceRecoverable	390200000	usd
CY2023	us-gaap	Increase Decrease In Deferred Income Taxes IncreaseDecreaseInDeferredIncomeTaxes	84400000	usd
CY2022	us-gaap	Increase Decrease In Deferred Income Taxes IncreaseDecreaseInDeferredIncomeTaxes	53900000	usd
CY2021	us-gaap	Increase Decrease In Deferred Income Taxes IncreaseDecreaseInDeferredIncomeTaxes	44800000	usd
CY2023	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	28800000	usd
CY2022	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	36900000	usd
CY2021	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-34800000	usd
CY2023	us-gaap	Increase Decrease In Interest And Dividends Receivable IncreaseDecreaseInInterestAndDividendsReceivable	15600000	usd
CY2022	us-gaap	Increase Decrease In Interest And Dividends Receivable IncreaseDecreaseInInterestAndDividendsReceivable	18400000	usd
CY2023	spnt	Proceeds From Options And Warrants Exercised ProceedsFromOptionsAndWarrantsExercised	27800000	usd
CY2022	spnt	Proceeds From Options And Warrants Exercised ProceedsFromOptionsAndWarrantsExercised	0	usd
CY2021	us-gaap	Increase Decrease In Interest And Dividends Receivable IncreaseDecreaseInInterestAndDividendsReceivable	-600000	usd
CY2023	us-gaap	Increase Decrease In Liability For Claims And Claims Adjustment Expense Reserve IncreaseDecreaseInLiabilityForClaimsAndClaimsAdjustmentExpenseReserve	339400000	usd
CY2022	us-gaap	Increase Decrease In Liability For Claims And Claims Adjustment Expense Reserve IncreaseDecreaseInLiabilityForClaimsAndClaimsAdjustmentExpenseReserve	427300000	usd
CY2021	us-gaap	Increase Decrease In Liability For Claims And Claims Adjustment Expense Reserve IncreaseDecreaseInLiabilityForClaimsAndClaimsAdjustmentExpenseReserve	614800000	usd
CY2023	us-gaap	Increase Decrease In Unearned Premiums IncreaseDecreaseInUnearnedPremiums	106200000	usd
CY2023	spnt	Increase Decrease In Liability For Claims And Claims Adjustment Expense Deferred Gain On Retroactive Reinsurance Contracts IncreaseDecreaseInLiabilityForClaimsAndClaimsAdjustmentExpenseDeferredGainOnRetroactiveReinsuranceContracts	27900000	usd
CY2022	spnt	Increase Decrease In Liability For Claims And Claims Adjustment Expense Deferred Gain On Retroactive Reinsurance Contracts IncreaseDecreaseInLiabilityForClaimsAndClaimsAdjustmentExpenseDeferredGainOnRetroactiveReinsuranceContracts	0	usd
CY2021	spnt	Increase Decrease In Liability For Claims And Claims Adjustment Expense Deferred Gain On Retroactive Reinsurance Contracts IncreaseDecreaseInLiabilityForClaimsAndClaimsAdjustmentExpenseDeferredGainOnRetroactiveReinsuranceContracts	0	usd
CY2023	us-gaap	Increase Decrease In Reinsurance Payables IncreaseDecreaseInReinsurancePayables	923600000	usd
CY2022	us-gaap	Increase Decrease In Reinsurance Payables IncreaseDecreaseInReinsurancePayables	125300000	usd
CY2021	us-gaap	Increase Decrease In Reinsurance Payables IncreaseDecreaseInReinsurancePayables	223000000.0	usd
CY2023	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	11500000	usd
CY2022	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	36800000	usd
CY2021	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	-25500000	usd
CY2023	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	581300000	usd
CY2022	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	293300000	usd
CY2021	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	1600000	usd
CY2023	us-gaap	Payments To Acquire Investments PaymentsToAcquireInvestments	4966100000	usd
CY2022	us-gaap	Payments To Acquire Investments PaymentsToAcquireInvestments	6161300000	usd
CY2021	us-gaap	Payments To Acquire Investments PaymentsToAcquireInvestments	3409600000	usd
CY2023	us-gaap	Proceeds From Sale Maturity And Collections Of Investments ProceedsFromSaleMaturityAndCollectionsOfInvestments	4590700000	usd
CY2022	us-gaap	Proceeds From Sale Maturity And Collections Of Investments ProceedsFromSaleMaturityAndCollectionsOfInvestments	4110700000	usd
CY2021	us-gaap	Proceeds From Sale Maturity And Collections Of Investments ProceedsFromSaleMaturityAndCollectionsOfInvestments	2687900000	usd
CY2023	spnt	Proceeds From Redemptions From Related Party Investment Funds ProceedsFromRedemptionsFromRelatedPartyInvestmentFunds	37700000	usd
CY2022	spnt	Proceeds From Redemptions From Related Party Investment Funds ProceedsFromRedemptionsFromRelatedPartyInvestmentFunds	741800000	usd
CY2021	spnt	Proceeds From Redemptions From Related Party Investment Funds ProceedsFromRedemptionsFromRelatedPartyInvestmentFunds	200000000.0	usd
CY2023	spnt	Proceeds From Payments For Broker Dealer Related Receivables And Payables Net Investing Activities ProceedsFromPaymentsForBrokerDealerRelatedReceivablesAndPayablesNetInvestingActivities	5500000	usd
CY2022	spnt	Proceeds From Payments For Broker Dealer Related Receivables And Payables Net Investing Activities ProceedsFromPaymentsForBrokerDealerRelatedReceivablesAndPayablesNetInvestingActivities	4500000	usd
CY2021	spnt	Proceeds From Payments For Broker Dealer Related Receivables And Payables Net Investing Activities ProceedsFromPaymentsForBrokerDealerRelatedReceivablesAndPayablesNetInvestingActivities	77900000	usd
CY2023	spnt	Proceeds From Acquisition Net ProceedsFromAcquisitionNet	0	usd
CY2022	spnt	Proceeds From Acquisition Net ProceedsFromAcquisitionNet	0	usd
CY2021	spnt	Proceeds From Acquisition Net ProceedsFromAcquisitionNet	631900000	usd
CY2023	us-gaap	Proceeds From Divestiture Of Businesses Net Of Cash Divested ProceedsFromDivestitureOfBusinessesNetOfCashDivested	0	usd
CY2022	us-gaap	Proceeds From Divestiture Of Businesses Net Of Cash Divested ProceedsFromDivestitureOfBusinessesNetOfCashDivested	0	usd
CY2021	us-gaap	Proceeds From Divestiture Of Businesses Net Of Cash Divested ProceedsFromDivestitureOfBusinessesNetOfCashDivested	20500000	usd
CY2021	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	208600000	usd
CY2023	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	0	usd
CY2022	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	0	usd
CY2021	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	50800000	usd
CY2023	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	11500000	usd
CY2022	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	7100000	usd
CY2021	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	500000	usd
CY2023	us-gaap	Proceeds From Payments For In Securities Sold Under Agreements To Repurchase ProceedsFromPaymentsForInSecuritiesSoldUnderAgreementsToRepurchase	-18000000.0	usd
CY2022	us-gaap	Proceeds From Payments For In Securities Sold Under Agreements To Repurchase ProceedsFromPaymentsForInSecuritiesSoldUnderAgreementsToRepurchase	17600000	usd
CY2021	us-gaap	Proceeds From Payments For In Securities Sold Under Agreements To Repurchase ProceedsFromPaymentsForInSecuritiesSoldUnderAgreementsToRepurchase	0	usd
CY2023	us-gaap	Payments Of Dividends Preferred Stock And Preference Stock PaymentsOfDividendsPreferredStockAndPreferenceStock	16000000.0	usd
CY2022	us-gaap	Payments Of Dividends Preferred Stock And Preference Stock PaymentsOfDividendsPreferredStockAndPreferenceStock	16000000.0	usd
CY2021	us-gaap	Payments Of Dividends Preferred Stock And Preference Stock PaymentsOfDividendsPreferredStockAndPreferenceStock	12200000	usd
CY2021	spnt	Proceeds From Options And Warrants Exercised ProceedsFromOptionsAndWarrantsExercised	0	usd
CY2023	spnt	Proceeds From Payments For Deposit Contracts Liabilities ProceedsFromPaymentsForDepositContractsLiabilities	-6100000	usd
CY2022	spnt	Proceeds From Payments For Deposit Contracts Liabilities ProceedsFromPaymentsForDepositContractsLiabilities	-14000000.0	usd
CY2021	spnt	Proceeds From Payments For Deposit Contracts Liabilities ProceedsFromPaymentsForDepositContractsLiabilities	-14000000.0	usd
CY2023	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	0	usd
CY2022	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	5000000.0	usd
CY2021	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	0	usd
CY2023	us-gaap	Proceeds From Minority Shareholders ProceedsFromMinorityShareholders	800000	usd
CY2022	us-gaap	Proceeds From Minority Shareholders ProceedsFromMinorityShareholders	800000	usd
CY2021	us-gaap	Proceeds From Minority Shareholders ProceedsFromMinorityShareholders	200000	usd
CY2023	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-61500000	usd
CY2022	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-23700000	usd
CY2021	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	24300000	usd
CY2023	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	187600000	usd
CY2022	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-1034700000	usd
CY2021	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	234500000	usd
CY2022Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	913700000	usd
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	1713900000	usd
CY2023Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	1101300000	usd
CY2022Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	913700000	usd
CY2021Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	1948400000	usd
CY2023	us-gaap	Interest Paid Net InterestPaidNet	46100000	usd
CY2022	us-gaap	Interest Paid Net InterestPaidNet	39200000	usd
CY2021	us-gaap	Interest Paid Net InterestPaidNet	39300000	usd
CY2023	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	49600000	usd
CY2022	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	-2200000	usd
CY2021	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	14700000	usd
CY2023	us-gaap	Use Of Estimates UseOfEstimates	<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 preparation of consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported and disclosed amounts of assets and liabilities and the disclosure of contingent assets and liabilities at the date of the consolidated financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates. The major estimates reflected in the Company’s consolidated financial statements include, but are not limited to, the loss and loss adjustment expense reserves, estimates of written and earned premiums and fair value of financial instruments.</span></div>
CY2022Q4	us-gaap	Value Of Business Acquired Voba ValueOfBusinessAcquiredVOBA	0	usd
CY2023Q4	spnt	Liability Premium Deficiency LiabilityPremiumDeficiency	0	usd
CY2022Q3	spnt	Reinsurance Loss Portfolio Transfer Loss Reserves Covered ReinsuranceLossPortfolioTransferLossReservesCovered	1300000000	usd
CY2023	us-gaap	Number Of Operating Segments NumberOfOperatingSegments	2	segment
CY2023Q2	spnt	Reinsurance Loss Portfolio Transfer Loss Reserves Covered ReinsuranceLossPortfolioTransferLossReservesCovered	905600000	usd
CY2023	us-gaap	Prior Period Reclassification Adjustment Description PriorPeriodReclassificationAdjustmentDescription	<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%">Certain amounts in the prior period financial statements have been reclassified to conform to the presentation of the current period financial statements. These reclassifications had no impact on the </span><span style="background-color:#ffffff;color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">previously reported net income (loss) or shareholders’ equity attributable to SiriusPoint shareholders.</span></div>
	spnt	Class Of Warrant Or Right Exercised During Period ClassOfWarrantOrRightExercisedDuringPeriod	5418434	shares
CY2022	us-gaap	Impairment Of Intangible Assets Excluding Goodwill ImpairmentOfIntangibleAssetsExcludingGoodwill	0	usd
CY2023	us-gaap	Impairment Of Intangible Assets Excluding Goodwill ImpairmentOfIntangibleAssetsExcludingGoodwill	0	usd
CY2023Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	12000000.0	usd
CY2023Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	11400000	usd
CY2023Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	9900000	usd
CY2023Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	9100000	usd
CY2023Q4	spnt	Finite Lived Intangible Asset Expected Amortization After Year Four FiniteLivedIntangibleAssetExpectedAmortizationAfterYearFour	62500000	usd
CY2023Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	104900000	usd
CY2023Q4	spnt	Liability For Claims And Claims Adjustment Expense Deferred Gain On Retroactive Reinsurance Contracts LiabilityForClaimsAndClaimsAdjustmentExpenseDeferredGainOnRetroactiveReinsuranceContracts	27900000	usd
CY2023Q4	spnt	Reinsurance Loss Portfolio Transfer Aggregate Limit Percentage Of Booked Reserves ReinsuranceLossPortfolioTransferAggregateLimitPercentageOfBookedReserves	1.30
CY2023	us-gaap	Number Of Operating Segments NumberOfOperatingSegments	2	segment
CY2023	us-gaap	Premiums Written Gross PremiumsWrittenGross	3427400000	usd
CY2023	us-gaap	Premiums Written Net PremiumsWrittenNet	2437900000	usd
CY2023	us-gaap	Premiums Earned Net PremiumsEarnedNet	2426200000	usd
CY2023	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Incurred Claims1 LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredClaims1	1381300000	usd
CY2023	us-gaap	Deferred Policy Acquisition Costs And Present Value Of Future Profits Amortization1 DeferredPolicyAcquisitionCostsAndPresentValueOfFutureProfitsAmortization1	472700000	usd
CY2023	us-gaap	Other Underwriting Expense OtherUnderwritingExpense	196300000	usd
CY2023	us-gaap	Underwriting Income Loss UnderwritingIncomeLoss	375900000	usd
CY2023	us-gaap	Net Investment Income NetInvestmentIncome	283700000	usd
CY2023	us-gaap	Gain Loss On Investments GainLossOnInvestments	-10000000.0	usd
CY2023	spnt	Gain Loss On Investments Related Party GainLossOnInvestmentsRelatedParty	-1000000.0	usd
CY2023	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	258200000	usd
CY2022	us-gaap	Other Underwriting Expense OtherUnderwritingExpense	184500000	usd
CY2022	spnt	Segment Income Loss SegmentIncomeLoss	83300000	usd
CY2022	us-gaap	Gain Loss On Investments GainLossOnInvestments	-225500000	usd
CY2022	spnt	Gain Loss On Investments Related Party GainLossOnInvestmentsRelatedParty	-210500000	usd
CY2022	us-gaap	Other Income OtherIncome	110200000	usd
CY2022	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	312800000	usd
CY2022	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	8100000	usd
CY2022	us-gaap	Interest Expense InterestExpense	38600000	usd
CY2022	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	66000000.0	usd
CY2022	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-422700000	usd
CY2022	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-36700000	usd
CY2022	us-gaap	Profit Loss ProfitLoss	-386000000.0	usd
CY2022	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	800000	usd
CY2022	us-gaap	Net Income Loss NetIncomeLoss	-386800000	usd
CY2022	us-gaap	Loss Ratio LossRatio	0.685
CY2022	us-gaap	Acquisition Cost Ratio AcquisitionCostRatio	0.199
CY2022	us-gaap	Underwriting Expense Ratio UnderwritingExpenseRatio	0.080
CY2022	us-gaap	Combined Ratio CombinedRatio	0.964
CY2021	us-gaap	Premiums Written Gross PremiumsWrittenGross	2236500000	usd
CY2021	us-gaap	Premiums Written Net PremiumsWrittenNet	1734200000	usd
CY2021	us-gaap	Premiums Earned Net PremiumsEarnedNet	1717000000	usd
CY2021	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Incurred Claims1 LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredClaims1	1326500000	usd
CY2021	us-gaap	Deferred Policy Acquisition Costs And Present Value Of Future Profits Amortization1 DeferredPolicyAcquisitionCostsAndPresentValueOfFutureProfitsAmortization1	387800000	usd
CY2021	us-gaap	Other Underwriting Expense OtherUnderwritingExpense	158800000	usd
CY2021	us-gaap	Underwriting Income Loss UnderwritingIncomeLoss	-156100000	usd
CY2021	us-gaap	Gain Loss On Investments GainLossOnInvestments	-16900000	usd
CY2021	spnt	Gain Loss On Investments Related Party GainLossOnInvestmentsRelatedParty	304000000.0	usd
CY2021	us-gaap	Other Income OtherIncome	151200000	usd
CY2021	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	266600000	usd
CY2021	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	5900000	usd
CY2021	us-gaap	Interest Expense InterestExpense	34000000.0	usd
CY2021	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	44000000.0	usd
CY2021	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	45100000	usd
CY2023	us-gaap	Premiums Written Net PremiumsWrittenNet	2437900000	usd
CY2023	us-gaap	Premiums Written Net PremiumsWrittenNet	2437900000	usd
CY2022	us-gaap	Premiums Written Net PremiumsWrittenNet	2549200000	usd
CY2022	us-gaap	Premiums Written Net PremiumsWrittenNet	2549200000	usd
CY2021	us-gaap	Premiums Written Net PremiumsWrittenNet	1734200000	usd
CY2021	us-gaap	Premiums Written Net PremiumsWrittenNet	1734200000	usd
CY2023Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	969200000	usd
CY2022Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	705300000	usd
CY2023Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	1101300000	usd
CY2022Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	913700000	usd
CY2023Q4	us-gaap	Restricted Investments RestrictedInvestments	2668000000	usd
CY2022Q4	us-gaap	Restricted Investments RestrictedInvestments	2202200000	usd
CY2023Q4	spnt	Cash Cash Equivalents Restricted Cash Restricted Cash Equivalents And Restricted Investments CashCashEquivalentsRestrictedCashRestrictedCashEquivalentsAndRestrictedInvestments	3769300000	usd
CY2022Q4	spnt	Cash Cash Equivalents Restricted Cash Restricted Cash Equivalents And Restricted Investments CashCashEquivalentsRestrictedCashRestrictedCashEquivalentsAndRestrictedInvestments	3115900000	usd
CY2023Q4	spnt	Cost And Equity Method Investments CostAndEquityMethodInvestments	80100000	usd
CY2023Q4	us-gaap	Assets Fair Value Disclosure AssetsFairValueDisclosure	6093300000	usd
CY2023Q4	us-gaap	Shares Subject To Mandatory Redemption Settlement Terms Amount SharesSubjectToMandatoryRedemptionSettlementTermsAmount	67300000	usd
CY2023Q4	us-gaap	Derivative Liabilities DerivativeLiabilities	6400000	usd
CY2023Q4	us-gaap	Liabilities Fair Value Disclosure LiabilitiesFairValueDisclosure	73700000	usd
CY2022Q4	spnt	Cost And Equity Method Investments CostAndEquityMethodInvestments	104800000	usd
CY2022Q4	us-gaap	Assets Fair Value Disclosure AssetsFairValueDisclosure	5663200000	usd
CY2022Q4	us-gaap	Financial Instruments Sold Not Yet Purchased At Fair Value FinancialInstrumentsSoldNotYetPurchasedAtFairValue	27000000.0	usd
CY2022Q4	us-gaap	Securities Loaned Or Sold Under Agreements To Repurchase Fair Value Disclosure SecuritiesLoanedOrSoldUnderAgreementsToRepurchaseFairValueDisclosure	18000000.0	usd
CY2022Q4	us-gaap	Shares Subject To Mandatory Redemption Settlement Terms Amount SharesSubjectToMandatoryRedemptionSettlementTermsAmount	60400000	usd
CY2022Q4	us-gaap	Derivative Liabilities DerivativeLiabilities	8600000	usd
CY2022Q4	us-gaap	Liabilities Fair Value Disclosure LiabilitiesFairValueDisclosure	114000000.0	usd
CY2022Q4	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Value FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue	240000000.0	usd
CY2023	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Transfers Net FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersNet	-25300000	usd
CY2023	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Purchases FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases	9400000	usd
CY2023	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Sales FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSales	30700000	usd
CY2023	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Gain Loss Included In Earnings1 FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1	-8000000.0	usd
CY2023Q4	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Value FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue	185400000	usd
CY2022Q4	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliations Recurring Basis Liability Value FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue	30000000.0	usd
CY2023	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Liability Transfers Net FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityTransfersNet	0	usd
CY2023	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Liability Purchases FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityPurchases	5100000	usd
CY2023	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Liability Sales FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilitySales	22300000	usd
CY2023	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Liability Gain Loss Included In Earnings FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityGainLossIncludedInEarnings	-60900000	usd
CY2023Q4	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliations Recurring Basis Liability Value FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue	73700000	usd
CY2021Q4	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Value FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue	265300000	usd
CY2022	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Transfers Net FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersNet	0	usd
CY2022	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Purchases FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases	45400000	usd
CY2022	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Sales FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSales	24700000	usd
CY2022	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Gain Loss Included In Earnings1 FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1	-46000000.0	usd
CY2022Q4	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Value FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue	240000000.0	usd
CY2021Q4	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliations Recurring Basis Liability Value FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue	60400000	usd
CY2022	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Liability Transfers Net FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityTransfersNet	0	usd
CY2022	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Liability Purchases FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityPurchases	0	usd
CY2022	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Liability Sales FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilitySales	-3400000	usd
CY2022	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Liability Gain Loss Included In Earnings FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityGainLossIncludedInEarnings	33800000	usd
CY2022Q4	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliations Recurring Basis Liability Value FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue	30000000.0	usd
CY2023Q4	us-gaap	Debt Securities Available For Sale Amortized Cost Excluding Accrued Interest Before Allowance For Credit Loss DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestBeforeAllowanceForCreditLoss	4754600000	usd
CY2023Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	42900000	usd
CY2023Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	41200000	usd
CY2023Q4	spnt	Debt Securities Available For Sale Accumulated Net Foreign Currency Gains Losses DebtSecuritiesAvailableForSaleAccumulatedNetForeignCurrencyGainsLosses	-900000	usd
CY2023Q4	us-gaap	Debt Securities Available For Sale Excluding Accrued Interest DebtSecuritiesAvailableForSaleExcludingAccruedInterest	4755400000	usd
CY2023Q4	us-gaap	Trading Securities Debt Amortized Cost TradingSecuritiesDebtAmortizedCost	568100000	usd
CY2023Q4	spnt	Debt Securities Trading Accumulated Unrecognized Gain DebtSecuritiesTradingAccumulatedUnrecognizedGain	700000	usd
CY2023Q4	spnt	Debt Securities Trading Accumulated Unrecognized Loss DebtSecuritiesTradingAccumulatedUnrecognizedLoss	33900000	usd
CY2023Q4	spnt	Debt Securities Trading Accumulated Net Foreign Currency Gains Losses DebtSecuritiesTradingAccumulatedNetForeignCurrencyGainsLosses	0	usd
CY2023Q4	us-gaap	Trading Securities Debt TradingSecuritiesDebt	534900000	usd
CY2022Q4	us-gaap	Debt Securities Available For Sale Amortized Cost Excluding Accrued Interest Before Allowance For Credit Loss DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestBeforeAllowanceForCreditLoss	2678100000	usd
CY2022Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	4900000	usd
CY2022Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	47400000	usd
CY2022Q4	spnt	Debt Securities Available For Sale Accumulated Net Foreign Currency Gains Losses DebtSecuritiesAvailableForSaleAccumulatedNetForeignCurrencyGainsLosses	-100000	usd
CY2022Q4	us-gaap	Debt Securities Available For Sale Excluding Accrued Interest DebtSecuritiesAvailableForSaleExcludingAccruedInterest	2635500000	usd
CY2022Q4	us-gaap	Trading Securities Debt Amortized Cost TradingSecuritiesDebtAmortizedCost	1630100000	usd
CY2022Q4	spnt	Debt Securities Trading Accumulated Unrecognized Gain DebtSecuritiesTradingAccumulatedUnrecognizedGain	900000	usd
CY2022Q4	spnt	Debt Securities Trading Accumulated Unrecognized Loss DebtSecuritiesTradingAccumulatedUnrecognizedLoss	100700000	usd
CY2022Q4	spnt	Debt Securities Trading Accumulated Net Foreign Currency Gains Losses DebtSecuritiesTradingAccumulatedNetForeignCurrencyGainsLosses	-4300000	usd
CY2022Q4	us-gaap	Trading Securities Debt TradingSecuritiesDebt	1526000000	usd
CY2023Q4	us-gaap	Debt Securities Available For Sale Amortized Cost Allowance For Credit Loss Excluding Accrued Interest DebtSecuritiesAvailableForSaleAmortizedCostAllowanceForCreditLossExcludingAccruedInterest	0	usd
CY2023Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Number Of Positions DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerNumberOfPositions	713	security
CY2023Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger	556900000	usd
CY2023Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	20300000	usd
CY2022Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger	0	usd
CY2023	spnt	Debt Securities Trading Weighted Average Duration DebtSecuritiesTradingWeightedAverageDuration	P2Y9M18D
CY2022	spnt	Debt Securities Trading Weighted Average Duration DebtSecuritiesTradingWeightedAverageDuration	P1Y9M18D
CY2023Q4	spnt	Debt Securities Trading Maturity Allocated And Single Maturity Date Rolling Within One Year Amortized Cost DebtSecuritiesTradingMaturityAllocatedAndSingleMaturityDateRollingWithinOneYearAmortizedCost	80200000	usd
CY2023Q4	spnt	Debt Securities Trading Maturity Allocated And Single Maturity Date Rolling Within One Year Fair Value DebtSecuritiesTradingMaturityAllocatedAndSingleMaturityDateRollingWithinOneYearFairValue	79700000	usd
CY2023Q4	us-gaap	Available For Sale Securities Debt Maturities Next Rolling Twelve Months Amortized Cost Basis AvailableForSaleSecuritiesDebtMaturitiesNextRollingTwelveMonthsAmortizedCostBasis	358600000	usd
CY2023Q4	us-gaap	Available For Sale Securities Debt Maturities Next Rolling Twelve Months Fair Value AvailableForSaleSecuritiesDebtMaturitiesNextRollingTwelveMonthsFairValue	357200000	usd
CY2022Q4	spnt	Debt Securities Trading Maturity Allocated And Single Maturity Date Rolling Within One Year Amortized Cost DebtSecuritiesTradingMaturityAllocatedAndSingleMaturityDateRollingWithinOneYearAmortizedCost	240400000	usd
CY2022Q4	spnt	Debt Securities Trading Maturity Allocated And Single Maturity Date Rolling Within One Year Fair Value DebtSecuritiesTradingMaturityAllocatedAndSingleMaturityDateRollingWithinOneYearFairValue	230900000	usd
CY2022Q4	us-gaap	Available For Sale Securities Debt Maturities Next Rolling Twelve Months Amortized Cost Basis AvailableForSaleSecuritiesDebtMaturitiesNextRollingTwelveMonthsAmortizedCostBasis	104200000	usd
CY2022Q4	us-gaap	Available For Sale Securities Debt Maturities Next Rolling Twelve Months Fair Value AvailableForSaleSecuritiesDebtMaturitiesNextRollingTwelveMonthsFairValue	104000000.0	usd
CY2023Q4	spnt	Debt Securities Trading Maturity Allocated And Single Maturity Date Rolling After One Through Five Years Amortized Cost DebtSecuritiesTradingMaturityAllocatedAndSingleMaturityDateRollingAfterOneThroughFiveYearsAmortizedCost	37200000	usd
CY2023Q4	spnt	Debt Securities Trading Maturity Allocated And Single Maturity Date Rolling After One Through Five Years Fair Value DebtSecuritiesTradingMaturityAllocatedAndSingleMaturityDateRollingAfterOneThroughFiveYearsFairValue	34500000	usd
CY2023Q4	us-gaap	Available For Sale Securities Debt Maturities Rolling Year Two Through Five Amortized Cost Basis AvailableForSaleSecuritiesDebtMaturitiesRollingYearTwoThroughFiveAmortizedCostBasis	2221000000	usd
CY2023Q4	us-gaap	Available For Sale Securities Debt Maturities Rolling Year Two Through Five Fair Value AvailableForSaleSecuritiesDebtMaturitiesRollingYearTwoThroughFiveFairValue	2219800000	usd
CY2022Q4	spnt	Debt Securities Trading Maturity Allocated And Single Maturity Date Rolling After One Through Five Years Amortized Cost DebtSecuritiesTradingMaturityAllocatedAndSingleMaturityDateRollingAfterOneThroughFiveYearsAmortizedCost	426500000	usd
CY2022Q4	spnt	Debt Securities Trading Maturity Allocated And Single Maturity Date Rolling After One Through Five Years Fair Value DebtSecuritiesTradingMaturityAllocatedAndSingleMaturityDateRollingAfterOneThroughFiveYearsFairValue	407000000.0	usd
CY2022Q4	us-gaap	Available For Sale Securities Debt Maturities Rolling Year Two Through Five Amortized Cost Basis AvailableForSaleSecuritiesDebtMaturitiesRollingYearTwoThroughFiveAmortizedCostBasis	1822700000	usd
CY2022Q4	us-gaap	Available For Sale Securities Debt Maturities Rolling Year Two Through Five Fair Value AvailableForSaleSecuritiesDebtMaturitiesRollingYearTwoThroughFiveFairValue	1802000000	usd
CY2023Q4	spnt	Debt Securities Trading Maturity Allocated And Single Maturity Date Rolling After Five Through Ten Years Amortized Cost DebtSecuritiesTradingMaturityAllocatedAndSingleMaturityDateRollingAfterFiveThroughTenYearsAmortizedCost	19400000	usd
CY2023Q4	spnt	Debt Securities Trading Maturity Allocated And Single Maturity Date Rolling After Five Through Ten Years Fair Value DebtSecuritiesTradingMaturityAllocatedAndSingleMaturityDateRollingAfterFiveThroughTenYearsFairValue	18000000.0	usd
CY2023Q4	us-gaap	Available For Sale Securities Debt Maturities Rolling Year Six Through Ten Amortized Cost Basis AvailableForSaleSecuritiesDebtMaturitiesRollingYearSixThroughTenAmortizedCostBasis	183300000	usd
CY2023Q4	us-gaap	Available For Sale Securities Debt Maturities Rolling Year Six Through Ten Fair Value AvailableForSaleSecuritiesDebtMaturitiesRollingYearSixThroughTenFairValue	188500000	usd
CY2022Q4	spnt	Debt Securities Trading Maturity Allocated And Single Maturity Date Rolling After Five Through Ten Years Amortized Cost DebtSecuritiesTradingMaturityAllocatedAndSingleMaturityDateRollingAfterFiveThroughTenYearsAmortizedCost	63400000	usd
CY2022Q4	spnt	Debt Securities Trading Maturity Allocated And Single Maturity Date Rolling After Five Through Ten Years Fair Value DebtSecuritiesTradingMaturityAllocatedAndSingleMaturityDateRollingAfterFiveThroughTenYearsFairValue	55700000	usd
CY2022Q4	us-gaap	Available For Sale Securities Debt Maturities Rolling Year Six Through Ten Amortized Cost Basis AvailableForSaleSecuritiesDebtMaturitiesRollingYearSixThroughTenAmortizedCostBasis	95800000	usd
CY2022Q4	us-gaap	Available For Sale Securities Debt Maturities Rolling Year Six Through Ten Fair Value AvailableForSaleSecuritiesDebtMaturitiesRollingYearSixThroughTenFairValue	92300000	usd
CY2023Q4	spnt	Debt Securities Trading Maturity Allocated And Single Maturity Date Rolling After Ten Years Amortized Cost DebtSecuritiesTradingMaturityAllocatedAndSingleMaturityDateRollingAfterTenYearsAmortizedCost	26600000	usd
CY2023Q4	spnt	Debt Securities Trading Maturity Allocated And Single Maturity Date Rolling After Ten Years Fair Value DebtSecuritiesTradingMaturityAllocatedAndSingleMaturityDateRollingAfterTenYearsFairValue	21300000	usd
CY2023Q4	us-gaap	Available For Sale Securities Debt Maturities Rolling After Year Ten Amortized Cost Basis AvailableForSaleSecuritiesDebtMaturitiesRollingAfterYearTenAmortizedCostBasis	2500000	usd
CY2023Q4	us-gaap	Available For Sale Securities Debt Maturities Rolling After Year Ten Fair Value AvailableForSaleSecuritiesDebtMaturitiesRollingAfterYearTenFairValue	2300000	usd
CY2022Q4	spnt	Debt Securities Trading Maturity Allocated And Single Maturity Date Rolling After Ten Years Amortized Cost DebtSecuritiesTradingMaturityAllocatedAndSingleMaturityDateRollingAfterTenYearsAmortizedCost	35500000	usd
CY2022Q4	spnt	Debt Securities Trading Maturity Allocated And Single Maturity Date Rolling After Ten Years Fair Value DebtSecuritiesTradingMaturityAllocatedAndSingleMaturityDateRollingAfterTenYearsFairValue	28500000	usd
CY2022Q4	us-gaap	Available For Sale Securities Debt Maturities Rolling After Year Ten Amortized Cost Basis AvailableForSaleSecuritiesDebtMaturitiesRollingAfterYearTenAmortizedCostBasis	4900000	usd
CY2022Q4	us-gaap	Available For Sale Securities Debt Maturities Rolling After Year Ten Fair Value AvailableForSaleSecuritiesDebtMaturitiesRollingAfterYearTenFairValue	4600000	usd
CY2023Q4	us-gaap	Trading Securities Debt Amortized Cost TradingSecuritiesDebtAmortizedCost	568100000	usd
CY2023Q4	us-gaap	Trading Securities Debt TradingSecuritiesDebt	534900000	usd
CY2023Q4	us-gaap	Debt Securities Available For Sale Amortized Cost Excluding Accrued Interest Before Allowance For Credit Loss DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestBeforeAllowanceForCreditLoss	4754600000	usd
CY2023Q4	us-gaap	Debt Securities Available For Sale Excluding Accrued Interest DebtSecuritiesAvailableForSaleExcludingAccruedInterest	4755400000	usd
CY2022Q4	us-gaap	Trading Securities Debt Amortized Cost TradingSecuritiesDebtAmortizedCost	1630100000	usd
CY2022Q4	us-gaap	Trading Securities Debt TradingSecuritiesDebt	1526000000	usd
CY2022Q4	us-gaap	Debt Securities Available For Sale Amortized Cost Excluding Accrued Interest Before Allowance For Credit Loss DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestBeforeAllowanceForCreditLoss	2678100000	usd
CY2022Q4	us-gaap	Debt Securities Available For Sale Excluding Accrued Interest DebtSecuritiesAvailableForSaleExcludingAccruedInterest	2635500000	usd
CY2023Q4	us-gaap	Trading Securities Debt TradingSecuritiesDebt	534900000	usd
CY2023Q4	us-gaap	Debt Securities Available For Sale Excluding Accrued Interest DebtSecuritiesAvailableForSaleExcludingAccruedInterest	4755400000	usd
CY2022Q4	us-gaap	Trading Securities Debt TradingSecuritiesDebt	1526000000	usd
CY2022Q4	us-gaap	Debt Securities Available For Sale Excluding Accrued Interest DebtSecuritiesAvailableForSaleExcludingAccruedInterest	2635500000	usd
CY2023Q4	us-gaap	Equity Securities Fv Ni Cost EquitySecuritiesFvNiCost	1900000	usd
CY2023Q4	spnt	Equity Securities Fvni Accumulated Unrecognized Gain EquitySecuritiesFVNIAccumulatedUnrecognizedGain	0	usd
CY2023Q4	spnt	Equity Securities Fvni Accumulated Unrecognized Loss EquitySecuritiesFVNIAccumulatedUnrecognizedLoss	500000	usd
CY2023Q4	spnt	Equity Securities Fvni Accumulated Net Foreign Currency Gains Losses EquitySecuritiesFVNIAccumulatedNetForeignCurrencyGainsLosses	200000	usd
CY2023Q4	us-gaap	Equity Securities Fv Ni Current And Noncurrent EquitySecuritiesFvNiCurrentAndNoncurrent	1600000	usd
CY2023Q4	spnt	Other Long Term Investments Cost OtherLongTermInvestmentsCost	367200000	usd
CY2023Q4	spnt	Other Long Term Investments Accumulated Unrecognized Gain OtherLongTermInvestmentsAccumulatedUnrecognizedGain	20000000.0	usd
CY2023Q4	spnt	Other Long Term Investments Accumulated Unrecognized Loss OtherLongTermInvestmentsAccumulatedUnrecognizedLoss	81100000	usd
CY2023Q4	spnt	Other Long Term Investments Accumulated Net Foreign Currency Gains Losses OtherLongTermInvestmentsAccumulatedNetForeignCurrencyGainsLosses	2400000	usd
CY2023Q4	us-gaap	Other Long Term Investments OtherLongTermInvestments	308500000	usd
CY2022Q4	us-gaap	Equity Securities Fv Ni Cost EquitySecuritiesFvNiCost	1800000	usd
CY2022Q4	spnt	Equity Securities Fvni Accumulated Unrecognized Gain EquitySecuritiesFVNIAccumulatedUnrecognizedGain	0	usd
CY2022Q4	spnt	Equity Securities Fvni Accumulated Unrecognized Loss EquitySecuritiesFVNIAccumulatedUnrecognizedLoss	200000	usd
CY2022Q4	spnt	Equity Securities Fvni Accumulated Net Foreign Currency Gains Losses EquitySecuritiesFVNIAccumulatedNetForeignCurrencyGainsLosses	0	usd
CY2022Q4	us-gaap	Equity Securities Fv Ni Current And Noncurrent EquitySecuritiesFvNiCurrentAndNoncurrent	1600000	usd
CY2022Q4	spnt	Other Long Term Investments Cost OtherLongTermInvestmentsCost	392000000.0	usd
CY2022Q4	spnt	Other Long Term Investments Accumulated Unrecognized Gain OtherLongTermInvestmentsAccumulatedUnrecognizedGain	27500000	usd
CY2022Q4	spnt	Other Long Term Investments Accumulated Unrecognized Loss OtherLongTermInvestmentsAccumulatedUnrecognizedLoss	41800000	usd
CY2022Q4	spnt	Other Long Term Investments Accumulated Net Foreign Currency Gains Losses OtherLongTermInvestmentsAccumulatedNetForeignCurrencyGainsLosses	-500000	usd
CY2022Q4	us-gaap	Other Long Term Investments OtherLongTermInvestments	377200000	usd
CY2023Q4	us-gaap	Other Long Term Investments OtherLongTermInvestments	308500000	usd
CY2023Q4	us-gaap	Other Long Term Investments OtherLongTermInvestments	308500000	usd
CY2022Q4	us-gaap	Other Long Term Investments OtherLongTermInvestments	377200000	usd
CY2023	us-gaap	Investment Income Investment Expense InvestmentIncomeInvestmentExpense	16100000	usd
CY2021	us-gaap	Investment Income Investment Expense InvestmentIncomeInvestmentExpense	11600000	usd
CY2023	spnt	Net Investment Income Loss And Gain Loss On Investments NetInvestmentIncomeLossAndGainLossOnInvestments	272700000	usd
CY2022	us-gaap	Investment Income Investment Expense InvestmentIncomeInvestmentExpense	20300000	usd
CY2022	spnt	Net Investment Income Loss And Gain Loss On Investments NetInvestmentIncomeLossAndGainLossOnInvestments	-322700000	usd
CY2021	spnt	Net Investment Income Loss And Gain Loss On Investments NetInvestmentIncomeLossAndGainLossOnInvestments	312500000	usd
CY2023	spnt	Realized Investment Gains RealizedInvestmentGains	148300000	usd
CY2022	spnt	Realized Investment Gains RealizedInvestmentGains	56200000	usd
CY2021	spnt	Realized Investment Gains RealizedInvestmentGains	40400000	usd
CY2023	spnt	Realized Investment Losses RealizedInvestmentLosses	189000000.0	usd
CY2022	spnt	Realized Investment Losses RealizedInvestmentLosses	132300000	usd
CY2021	spnt	Realized Investment Losses RealizedInvestmentLosses	9600000	usd
CY2023	us-gaap	Realized Investment Gains Losses RealizedInvestmentGainsLosses	-40700000	usd
CY2022	us-gaap	Realized Investment Gains Losses RealizedInvestmentGainsLosses	-76100000	usd
CY2021	us-gaap	Realized Investment Gains Losses RealizedInvestmentGainsLosses	30800000	usd
CY2023	us-gaap	Unrealized Gain Loss On Investments UnrealizedGainLossOnInvestments	30700000	usd
CY2022	us-gaap	Unrealized Gain Loss On Investments UnrealizedGainLossOnInvestments	-149400000	usd
CY2021	us-gaap	Unrealized Gain Loss On Investments UnrealizedGainLossOnInvestments	-47700000	usd
CY2023	us-gaap	Gain Loss On Investments GainLossOnInvestments	-10000000.0	usd
CY2022	us-gaap	Gain Loss On Investments GainLossOnInvestments	-225500000	usd
CY2021	us-gaap	Gain Loss On Investments GainLossOnInvestments	-16900000	usd
CY2023	spnt	Related Party Transaction Gain Loss On Investments RelatedPartyTransactionGainLossOnInvestments	-9100000	usd
CY2022	spnt	Related Party Transaction Gain Loss On Investments RelatedPartyTransactionGainLossOnInvestments	5600000	usd
CY2021	spnt	Related Party Transaction Gain Loss On Investments RelatedPartyTransactionGainLossOnInvestments	12900000	usd
CY2023	us-gaap	Debt Securities Available For Sale Realized Gain Loss DebtSecuritiesAvailableForSaleRealizedGainLoss	-10000000.0	usd
CY2022	us-gaap	Debt Securities Available For Sale Realized Gain Loss DebtSecuritiesAvailableForSaleRealizedGainLoss	2700000	usd
CY2021	us-gaap	Debt Securities Available For Sale Realized Gain Loss DebtSecuritiesAvailableForSaleRealizedGainLoss	0	usd
CY2023	us-gaap	Debt Securities Trading Realized Gain Loss DebtSecuritiesTradingRealizedGainLoss	-42000000.0	usd
CY2022	us-gaap	Debt Securities Trading Realized Gain Loss DebtSecuritiesTradingRealizedGainLoss	-66700000	usd
CY2021	us-gaap	Debt Securities Trading Realized Gain Loss DebtSecuritiesTradingRealizedGainLoss	12300000	usd
CY2023	spnt	Gain Loss On Sale Of Other Short Term Investments GainLossOnSaleOfOtherShortTermInvestments	-1400000	usd
CY2022	spnt	Gain Loss On Sale Of Other Short Term Investments GainLossOnSaleOfOtherShortTermInvestments	-2900000	usd
CY2021	spnt	Gain Loss On Sale Of Other Short Term Investments GainLossOnSaleOfOtherShortTermInvestments	-100000	usd
CY2023	us-gaap	Equity Securities Fv Ni Realized Gain Loss EquitySecuritiesFvNiRealizedGainLoss	0	usd
CY2022	us-gaap	Equity Securities Fv Ni Realized Gain Loss EquitySecuritiesFvNiRealizedGainLoss	-2300000	usd
CY2021	us-gaap	Equity Securities Fv Ni Realized Gain Loss EquitySecuritiesFvNiRealizedGainLoss	-100000	usd
CY2021	spnt	Gain Loss On Sale Of Other Long Term Investments GainLossOnSaleOfOtherLongTermInvestments	14100000	usd
CY2021	us-gaap	Debt Securities Trading Unrealized Gain Loss DebtSecuritiesTradingUnrealizedGainLoss	-40200000	usd
CY2023	us-gaap	Equity Securities Fv Ni Unrealized Gain Loss EquitySecuritiesFvNiUnrealizedGainLoss	-100000	usd
CY2022	us-gaap	Equity Securities Fv Ni Unrealized Gain Loss EquitySecuritiesFvNiUnrealizedGainLoss	1800000	usd
CY2021	us-gaap	Equity Securities Fv Ni Unrealized Gain Loss EquitySecuritiesFvNiUnrealizedGainLoss	-2500000	usd
CY2023	spnt	Other Long Term Investments Unrealized Gain Loss OtherLongTermInvestmentsUnrealizedGainLoss	-40300000	usd
CY2023	us-gaap	Unrealized Gain Loss On Derivatives UnrealizedGainLossOnDerivatives	4800000	usd
CY2022	us-gaap	Unrealized Gain Loss On Derivatives UnrealizedGainLossOnDerivatives	0	usd
CY2021	us-gaap	Unrealized Gain Loss On Derivatives UnrealizedGainLossOnDerivatives	0	usd
CY2023	spnt	Other Long Term Investments Unrealized Gain Loss OtherLongTermInvestmentsUnrealizedGainLoss	-40300000	usd
CY2022Q4	us-gaap	Minority Interest MinorityInterest	7900000	usd
CY2021Q4	us-gaap	Minority Interest MinorityInterest	-400000	usd
CY2023	us-gaap	Noncontrolling Interest Increase From Business Combination NoncontrollingInterestIncreaseFromBusinessCombination	0	usd
CY2022	us-gaap	Noncontrolling Interest Increase From Business Combination NoncontrollingInterestIncreaseFromBusinessCombination	800000	usd
CY2023	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	8900000	usd
CY2022	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	800000	usd
CY2023	spnt	Noncontrolling Interest Increase Decrease From Contributions Redemptions NoncontrollingInterestIncreaseDecreaseFromContributionsRedemptions	800000	usd
CY2022	spnt	Noncontrolling Interest Increase Decrease From Contributions Redemptions NoncontrollingInterestIncreaseDecreaseFromContributionsRedemptions	0	usd
CY2022	spnt	Noncontrolling Interest Increase Decrease From Derecognition NoncontrollingInterestIncreaseDecreaseFromDerecognition	6700000	usd
CY2023	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%">As of December 31, 2023 and 2022, loss and loss adjustment expense reserves in the consolidated balance sheets was comprised of the following:</span></div><div><table style="border-collapse:collapse;display:inline-table;margin-bottom:5pt;vertical-align:text-bottom;width:100.000%"><tr><td style="width:1.0%"></td><td style="width:75.239%"></td><td style="width:0.1%"></td><td style="width:1.0%"></td><td style="width:10.358%"></td><td style="width:0.1%"></td><td style="width:0.1%"></td><td style="width:0.544%"></td><td style="width:0.1%"></td><td style="width:1.0%"></td><td style="width:10.359%"></td><td style="width:0.1%"></td></tr><tr><td colspan="3" style="padding:0 1pt"></td><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%">December 31,<br/>2023</span></td><td colspan="3" style="padding:0 1pt"></td><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%">December 31, 2022</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%">Case loss and loss adjustment expense reserves</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%">$</span></td><td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 0;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">2,042.5 </span></td><td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></td><td colspan="3" style="background-color:#cceeff;padding:0 1pt"></td><td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">$</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%">1,980.2 </span></td><td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></td></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%">Incurred but not reported loss and loss adjustment expense reserves</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%">3,509.7 </span></td><td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></td><td colspan="3" style="background-color:#ffffff;padding:0 1pt"></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%">3,226.5 </span></td><td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></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%">Unallocated loss adjustment expense reserves</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%">55.9 </span></td><td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></td><td colspan="3" style="background-color:#cceeff;padding:0 1pt"></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%">62.0 </span></td><td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></td></tr><tr><td colspan="3" style="display:none"></td><td colspan="3" style="display:none"></td><td colspan="3" style="display:none"></td><td colspan="3" style="display:none"></td></tr><tr><td colspan="3" style="background-color:#ffffff;padding:0 1pt"></td><td style="background-color:#ffffff;border-bottom:3pt double #000000;border-top:1pt solid #000;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%">$</span></td><td style="background-color:#ffffff;border-bottom:3pt double #000000;border-top:1pt solid #000;padding:2px 0;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">5,608.1 </span></td><td style="background-color:#ffffff;border-bottom:3pt double #000000;border-top:1pt solid #000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></td><td colspan="3" style="background-color:#ffffff;padding:0 1pt"></td><td style="background-color:#ffffff;border-bottom:3pt double #000000;border-top:1pt solid #000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">$</span></td><td style="background-color:#ffffff;border-bottom:3pt double #000000;border-top:1pt solid #000;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%">5,268.7 </span></td><td style="background-color:#ffffff;border-bottom:3pt double #000000;border-top:1pt solid #000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></td></tr></table></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 following table represents the activity in the loss and loss adjustment expense reserves for the years ended December 31, 2023, 2022 and 2021:</span></div><div style="text-align:center"><table style="border-collapse:collapse;display:inline-table;margin-bottom:5pt;vertical-align:text-bottom;width:100.000%"><tr><td style="width:1.0%"></td><td style="width:63.929%"></td><td style="width:0.1%"></td><td style="width:1.0%"></td><td style="width:10.060%"></td><td style="width:0.1%"></td><td style="width:0.1%"></td><td style="width:0.544%"></td><td style="width:0.1%"></td><td style="width:1.0%"></td><td style="width:10.060%"></td><td style="width:0.1%"></td><td style="width:0.1%"></td><td style="width:0.544%"></td><td style="width:0.1%"></td><td style="width:1.0%"></td><td style="width:10.063%"></td><td style="width:0.1%"></td></tr><tr><td colspan="3" style="padding:0 1pt"></td><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%">2023</span></td><td colspan="3" style="padding:0 1pt"></td><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%">2022</span></td><td colspan="3" style="padding:0 1pt"></td><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%">2021</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 year</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%">$</span></td><td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 0;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">5,268.7 </span></td><td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></td><td colspan="3" style="background-color:#cceeff;padding:0 1pt"></td><td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">$</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%">4,841.4 </span></td><td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></td><td colspan="3" style="background-color:#cceeff;padding:0 1pt"></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%">1,310.1 </span></td><td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></td></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 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%">(1,376.2)</span></td><td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></td><td colspan="3" style="background-color:#ffffff;padding:0 1pt"></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%">(1,215.3)</span></td><td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></td><td colspan="3" style="background-color:#ffffff;padding:0 1pt"></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%">(14.4)</span></td><td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></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%">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%">(1.0)</span></td><td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></td><td colspan="3" style="background-color:#cceeff;padding:0 1pt"></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%">(1.4)</span></td><td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></td><td colspan="3" style="background-color:#cceeff;padding:0 1pt"></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%">(6.0)</span></td><td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></td></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 year</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%">3,891.5 </span></td><td style="background-color:#ffffff;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></td><td colspan="3" style="background-color:#ffffff;padding:0 1pt"></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%">3,624.7 </span></td><td style="background-color:#ffffff;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></td><td colspan="3" style="background-color:#ffffff;padding:0 1pt"></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%">1,289.7 </span></td><td style="background-color:#ffffff;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></td></tr><tr><td colspan="3" style="background-color:#cceeff;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%">Net reserves for loss and loss adjustment expenses disposed</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:#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%">(758.3)</span></td><td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></td><td colspan="3" style="background-color:#cceeff;padding:0 1pt"></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%">— </span></td><td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></td><td colspan="3" style="background-color:#cceeff;padding:0 1pt"></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%">— </span></td><td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></td></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%">Increase (decrease) in net loss and loss adjustment expenses incurred in respect of losses occurring in:</span></td><td colspan="3" style="background-color:#ffffff;padding:0 1pt"></td><td colspan="3" style="background-color:#ffffff;padding:0 1pt"></td><td colspan="3" style="background-color:#ffffff;padding:0 1pt"></td><td colspan="3" style="background-color:#ffffff;padding:0 1pt"></td><td colspan="3" style="background-color:#ffffff;padding:0 1pt"></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%"> Current year</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%">1,555.5 </span></td><td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></td><td colspan="3" style="background-color:#cceeff;padding:0 1pt"></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%">1,609.7 </span></td><td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></td><td colspan="3" style="background-color:#cceeff;padding:0 1pt"></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%">1,369.1 </span></td><td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></td></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%"> Prior years </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%">(174.2)</span></td><td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></td><td colspan="3" style="background-color:#ffffff;padding:0 1pt"></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%">(21.3)</span></td><td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></td><td colspan="3" style="background-color:#ffffff;padding:0 1pt"></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%">(42.6)</span></td><td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></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%">Total incurred loss and loss adjustment expenses</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%">1,381.3 </span></td><td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></td><td colspan="3" style="background-color:#cceeff;padding:0 1pt"></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%">1,588.4 </span></td><td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></td><td colspan="3" style="background-color:#cceeff;padding:0 1pt"></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%">1,326.5 </span></td><td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></td></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 loss and loss adjustment expenses paid in respect of losses occurring in:</span></td><td colspan="3" style="background-color:#ffffff;padding:0 1pt"></td><td colspan="3" style="background-color:#ffffff;padding:0 1pt"></td><td colspan="3" style="background-color:#ffffff;padding:0 1pt"></td><td colspan="3" style="background-color:#ffffff;padding:0 1pt"></td><td colspan="3" style="background-color:#ffffff;padding:0 1pt"></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%"> Current year</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%">(347.4)</span></td><td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></td><td colspan="3" style="background-color:#cceeff;padding:0 1pt"></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%">(316.1)</span></td><td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></td><td colspan="3" style="background-color:#cceeff;padding:0 1pt"></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%">(271.2)</span></td><td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></td></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%"> Prior years</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%">(837.3)</span></td><td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></td><td colspan="3" style="background-color:#ffffff;padding:0 1pt"></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%">(939.2)</span></td><td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></td><td colspan="3" style="background-color:#ffffff;padding:0 1pt"></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%">(1,178.9)</span></td><td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></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%">Total net paid losses</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%">(1,184.7)</span></td><td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></td><td colspan="3" style="background-color:#cceeff;padding:0 1pt"></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%">(1,255.3)</span></td><td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></td><td colspan="3" style="background-color:#cceeff;padding:0 1pt"></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%">(1,450.1)</span></td><td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></td></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%">Foreign currency translation</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%">10.7 </span></td><td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></td><td colspan="3" style="background-color:#ffffff;padding:0 1pt"></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%">(66.3)</span></td><td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></td><td colspan="3" style="background-color:#ffffff;padding:0 1pt"></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%">(9.2)</span></td><td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></td></tr><tr><td colspan="3" style="background-color:#cceeff;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%">Amounts acquired as a result of Sirius Group acquisition </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"> (2)</span></div></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%">— </span></td><td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></td><td colspan="3" style="background-color:#cceeff;padding:0 1pt"></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%">— </span></td><td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></td><td colspan="3" style="background-color:#cceeff;padding:0 1pt"></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%">2,467.8 </span></td><td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></td></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 year</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%">3,340.5 </span></td><td style="background-color:#ffffff;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></td><td colspan="3" style="background-color:#ffffff;padding:0 1pt"></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%">3,891.5 </span></td><td style="background-color:#ffffff;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></td><td colspan="3" style="background-color:#ffffff;padding:0 1pt"></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%">3,624.7 </span></td><td style="background-color:#ffffff;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></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%">Plus: loss and loss adjustment expenses recoverable, end of year</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%">2,295.1 </span></td><td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></td><td colspan="3" style="background-color:#cceeff;padding:0 1pt"></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%">1,376.2 </span></td><td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></td><td colspan="3" style="background-color:#cceeff;padding:0 1pt"></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%">1,215.3 </span></td><td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></td></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%">Plus: deferred (gains) charges on retroactive reinsurance contracts</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"> (3)</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%">(27.5)</span></td><td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></td><td colspan="3" style="background-color:#ffffff;padding:0 1pt"></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%">1.0 </span></td><td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></td><td colspan="3" style="background-color:#ffffff;padding:0 1pt"></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%">1.4 </span></td><td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></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, end of year</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%">5,608.1 </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><td colspan="3" style="background-color:#cceeff;padding:0 1pt"></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%">$</span></td><td style="background-color:#cceeff;border-bottom:3pt double #000000;border-top:1pt solid #000000;padding:2px 0;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">5,268.7 </span></td><td style="background-color:#cceeff;border-bottom:3pt double #000000;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></td><td colspan="3" style="background-color:#cceeff;padding:0 1pt"></td><td style="background-color:#cceeff;border-bottom:3pt double #000000;border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">$</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%">4,841.4 </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></tr></table></div><div style="margin-top:3pt;padding-left:18pt;text-align:justify;text-indent:-18pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:8pt;font-weight:400;line-height:120%">(1)</span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:8pt;font-weight:400;line-height:120%;padding-left:8.68pt">Net reserves for loss and loss adjustment expenses transferred represents the transfer of reserves under the 2023 LPT</span></div><div style="margin-top:3pt;padding-left:18pt;text-align:justify;text-indent:-18pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:8pt;font-weight:400;line-height:120%">(2)</span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:8pt;font-weight:400;line-height:120%;padding-left:8.68pt">Represents the fair value of Sirius Group’s reserves for claims and claim expenses, net of reinsurance recoverables, acquired at February 26, 2021. See Note 3 for additional information related to the acquisition of Sirius Group.</span></div><div style="margin-top:3pt;padding-left:18pt;text-align:justify;text-indent:-18pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:8pt;font-weight:400;line-height:120%">(3)</span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:8pt;font-weight:400;line-height:120%;padding-left:8.68pt">Deferred charges on retroactive reinsurance are recorded in other assets on the Company’s consolidated balance sheets. Deferred gains on retroactive reinsurance are presented as a separate line item on the Company’s consolidated balance sheets.</span></div>
CY2023Q4	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Reported Claims Amount LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseReportedClaimsAmount	2042500000	usd
CY2022Q4	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Reported Claims Amount LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseReportedClaimsAmount	1980200000	usd
CY2023Q4	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Incurred But Not Reported Ibnr Claims Amount LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredButNotReportedIBNRClaimsAmount	3509700000	usd
CY2022Q4	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Incurred But Not Reported Ibnr Claims Amount LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredButNotReportedIBNRClaimsAmount	3226500000	usd
CY2023Q4	spnt	Liability For Unpaid Claims And Claims Adjustment Expense Accumulated Unallocated Claim Adjustment Expense LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseAccumulatedUnallocatedClaimAdjustmentExpense	55900000	usd
CY2023Q4	us-gaap	Shortduration Insurance Contracts Liability For Unpaid Claims And Claims Adjustment Expense Accumulated Unallocated Claim Adjustment Expense ShortdurationInsuranceContractsLiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseAccumulatedUnallocatedClaimAdjustmentExpense	55900000	usd
CY2022Q4	spnt	Liability For Unpaid Claims And Claims Adjustment Expense Accumulated Unallocated Claim Adjustment Expense LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseAccumulatedUnallocatedClaimAdjustmentExpense	62000000.0	usd
CY2023Q4	us-gaap	Liability For Claims And Claims Adjustment Expense LiabilityForClaimsAndClaimsAdjustmentExpense	5608100000	usd
CY2022Q4	us-gaap	Liability For Claims And Claims Adjustment Expense LiabilityForClaimsAndClaimsAdjustmentExpense	5268700000	usd
CY2022Q4	us-gaap	Liability For Claims And Claims Adjustment Expense LiabilityForClaimsAndClaimsAdjustmentExpense	5268700000	usd
CY2021Q4	us-gaap	Liability For Claims And Claims Adjustment Expense LiabilityForClaimsAndClaimsAdjustmentExpense	4841400000	usd
CY2020Q4	us-gaap	Liability For Claims And Claims Adjustment Expense LiabilityForClaimsAndClaimsAdjustmentExpense	1310100000	usd
CY2022Q4	us-gaap	Reinsurance Recoverables On Paid And Unpaid Losses ReinsuranceRecoverablesOnPaidAndUnpaidLosses	1376200000	usd
CY2021Q4	us-gaap	Reinsurance Recoverables On Paid And Unpaid Losses ReinsuranceRecoverablesOnPaidAndUnpaidLosses	1215300000	usd
CY2020Q4	us-gaap	Reinsurance Recoverables On Paid And Unpaid Losses ReinsuranceRecoverablesOnPaidAndUnpaidLosses	14400000	usd
CY2022Q4	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Opening Balance Adjustments LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseOpeningBalanceAdjustments	-1000000.0	usd
CY2021Q4	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Opening Balance Adjustments LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseOpeningBalanceAdjustments	-1400000	usd
CY2020Q4	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Opening Balance Adjustments LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseOpeningBalanceAdjustments	-6000000.0	usd
CY2022Q4	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Net LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseNet	3891500000	usd
CY2021Q4	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Net LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseNet	3624700000	usd
CY2023	spnt	Liability For Unpaid Claims And Claims Adjustment Expense Transferred LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseTransferred	758300000	usd
CY2022	spnt	Liability For Unpaid Claims And Claims Adjustment Expense Transferred LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseTransferred	0	usd
CY2021	spnt	Liability For Unpaid Claims And Claims Adjustment Expense Transferred LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseTransferred	0	usd
CY2023	us-gaap	Supplemental Information For Property Casualty Insurance Underwriters Current Year Claims And Claims Adjustment Expense SupplementalInformationForPropertyCasualtyInsuranceUnderwritersCurrentYearClaimsAndClaimsAdjustmentExpense	1555500000	usd
CY2022	us-gaap	Supplemental Information For Property Casualty Insurance Underwriters Current Year Claims And Claims Adjustment Expense SupplementalInformationForPropertyCasualtyInsuranceUnderwritersCurrentYearClaimsAndClaimsAdjustmentExpense	1609700000	usd
CY2021	us-gaap	Supplemental Information For Property Casualty Insurance Underwriters Current Year Claims And Claims Adjustment Expense SupplementalInformationForPropertyCasualtyInsuranceUnderwritersCurrentYearClaimsAndClaimsAdjustmentExpense	1369100000	usd
CY2022	us-gaap	Supplemental Information For Property Casualty Insurance Underwriters Prior Year Claims And Claims Adjustment Expense SupplementalInformationForPropertyCasualtyInsuranceUnderwritersPriorYearClaimsAndClaimsAdjustmentExpense	-21300000	usd
CY2023	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Incurred Claims1 LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredClaims1	1381300000	usd
CY2022	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Incurred Claims1 LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredClaims1	1588400000	usd
CY2021	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Incurred Claims1 LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredClaims1	1326500000	usd
CY2023	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Claims Paid Current Year1 LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidCurrentYear1	347400000	usd
CY2022	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Claims Paid Current Year1 LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidCurrentYear1	316100000	usd
CY2021	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Claims Paid Current Year1 LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidCurrentYear1	271200000	usd
CY2023	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Claims Paid Prior Years1 LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidPriorYears1	837300000	usd
CY2022	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Claims Paid Prior Years1 LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidPriorYears1	939200000	usd
CY2021	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Claims Paid Prior Years1 LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidPriorYears1	1178900000	usd
CY2023	us-gaap	Payments For Losses And Loss Adjustment Expense PaymentsForLossesAndLossAdjustmentExpense	1184700000	usd
CY2022	us-gaap	Payments For Losses And Loss Adjustment Expense PaymentsForLossesAndLossAdjustmentExpense	1255300000	usd
CY2021	us-gaap	Payments For Losses And Loss Adjustment Expense PaymentsForLossesAndLossAdjustmentExpense	1450100000	usd
CY2023	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Foreign Currency Translation Gain Loss LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseForeignCurrencyTranslationGainLoss	-10700000	usd
CY2022	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Foreign Currency Translation Gain Loss LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseForeignCurrencyTranslationGainLoss	66300000	usd
CY2022	us-gaap	Assumed Premiums Earned AssumedPremiumsEarned	1915200000	usd
CY2021	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Foreign Currency Translation Gain Loss LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseForeignCurrencyTranslationGainLoss	9200000	usd
CY2023	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Business Acquisitions LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseBusinessAcquisitions	0	usd
CY2022	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Business Acquisitions LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseBusinessAcquisitions	0	usd
CY2021	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Business Acquisitions LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseBusinessAcquisitions	2467800000	usd
CY2023Q4	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Net LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseNet	3340500000	usd
CY2022Q4	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Net LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseNet	3891500000	usd
CY2021Q4	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Net LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseNet	3624700000	usd
CY2023Q4	us-gaap	Reinsurance Recoverables On Paid And Unpaid Losses ReinsuranceRecoverablesOnPaidAndUnpaidLosses	2295100000	usd
CY2022Q4	us-gaap	Reinsurance Recoverables On Paid And Unpaid Losses ReinsuranceRecoverablesOnPaidAndUnpaidLosses	1376200000	usd
CY2021Q4	us-gaap	Reinsurance Recoverables On Paid And Unpaid Losses ReinsuranceRecoverablesOnPaidAndUnpaidLosses	1215300000	usd
CY2023Q4	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Opening Balance Adjustments LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseOpeningBalanceAdjustments	27500000	usd
CY2022Q4	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Opening Balance Adjustments LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseOpeningBalanceAdjustments	-1000000.0	usd
CY2021Q4	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Opening Balance Adjustments LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseOpeningBalanceAdjustments	-1400000	usd
CY2023Q4	us-gaap	Liability For Claims And Claims Adjustment Expense LiabilityForClaimsAndClaimsAdjustmentExpense	5608100000	usd
CY2022Q4	us-gaap	Liability For Claims And Claims Adjustment Expense LiabilityForClaimsAndClaimsAdjustmentExpense	5268700000	usd
CY2021Q4	us-gaap	Liability For Claims And Claims Adjustment Expense LiabilityForClaimsAndClaimsAdjustmentExpense	4841400000	usd
CY2023	us-gaap	Supplemental Information For Property Casualty Insurance Underwriters Prior Year Claims And Claims Adjustment Expense SupplementalInformationForPropertyCasualtyInsuranceUnderwritersPriorYearClaimsAndClaimsAdjustmentExpense	-174200000	usd
CY2023	spnt	Prior Year Claims And Claims Adjustment Expense Loss Portfolio Transfers PriorYearClaimsAndClaimsAdjustmentExpenseLossPortfolioTransfers	-127800000	usd
CY2022	us-gaap	Supplemental Information For Property Casualty Insurance Underwriters Prior Year Claims And Claims Adjustment Expense SupplementalInformationForPropertyCasualtyInsuranceUnderwritersPriorYearClaimsAndClaimsAdjustmentExpense	-21300000	usd
CY2021	us-gaap	Supplemental Information For Property Casualty Insurance Underwriters Prior Year Claims And Claims Adjustment Expense SupplementalInformationForPropertyCasualtyInsuranceUnderwritersPriorYearClaimsAndClaimsAdjustmentExpense	-42600000	usd
CY2023	us-gaap	Number Of Operating Segments NumberOfOperatingSegments	2	segment
CY2023Q4	us-gaap	Shortduration Insurance Contracts Liability For Unpaid Claims And Allocated Claim Adjustment Expense Net ShortdurationInsuranceContractsLiabilityForUnpaidClaimsAndAllocatedClaimAdjustmentExpenseNet	3169800000	usd
CY2023Q4	us-gaap	Reinsurance Recoverables On Paid And Unpaid Losses ReinsuranceRecoverablesOnPaidAndUnpaidLosses	2295100000	usd
CY2023Q4	spnt	Liability For Unpaid Claims And Claims Adjustment Expense Accumulated Unallocated Claim Adjustment Expense LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseAccumulatedUnallocatedClaimAdjustmentExpense	55900000	usd
CY2023Q4	us-gaap	Shortduration Insurance Contracts Liability For Unpaid Claims And Claims Adjustment Expense Accumulated Unallocated Claim Adjustment Expense ShortdurationInsuranceContractsLiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseAccumulatedUnallocatedClaimAdjustmentExpense	55900000	usd
CY2023Q4	us-gaap	Shortduration Insurance Contracts Liability For Unpaid Claims And Claim Adjustment Expense Other Reconciling Item ShortdurationInsuranceContractsLiabilityForUnpaidClaimsAndClaimAdjustmentExpenseOtherReconcilingItem	114800000	usd
CY2023Q4	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Opening Balance Adjustments LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseOpeningBalanceAdjustments	27500000	usd
CY2023Q4	us-gaap	Liability For Claims And Claims Adjustment Expense LiabilityForClaimsAndClaimsAdjustmentExpense	5608100000	usd
CY2023	us-gaap	Direct Premiums Written DirectPremiumsWritten	1678700000	usd
CY2022	us-gaap	Direct Premiums Written DirectPremiumsWritten	1403900000	usd
CY2021	us-gaap	Direct Premiums Written DirectPremiumsWritten	718000000.0	usd
CY2023	us-gaap	Assumed Premiums Written AssumedPremiumsWritten	1748700000	usd
CY2022	us-gaap	Assumed Premiums Written AssumedPremiumsWritten	2005800000	usd
CY2021	us-gaap	Assumed Premiums Written AssumedPremiumsWritten	1518500000	usd
CY2023	us-gaap	Premiums Written Gross PremiumsWrittenGross	3427400000	usd
CY2022	us-gaap	Premiums Written Gross PremiumsWrittenGross	3409700000	usd
CY2021	us-gaap	Premiums Written Gross PremiumsWrittenGross	2236500000	usd
CY2023	us-gaap	Ceded Premiums Written CededPremiumsWritten	989500000	usd
CY2022	us-gaap	Ceded Premiums Written CededPremiumsWritten	860500000	usd
CY2021	us-gaap	Ceded Premiums Written CededPremiumsWritten	502300000	usd
CY2023	us-gaap	Premiums Written Net PremiumsWrittenNet	2437900000	usd
CY2022	us-gaap	Premiums Written Net PremiumsWrittenNet	2549200000	usd
CY2021	us-gaap	Premiums Written Net PremiumsWrittenNet	1734200000	usd
CY2023	us-gaap	Direct Premiums Earned DirectPremiumsEarned	1498000000	usd
CY2022	us-gaap	Direct Premiums Earned DirectPremiumsEarned	1153600000	usd
CY2021	us-gaap	Direct Premiums Earned DirectPremiumsEarned	600800000	usd
CY2023	us-gaap	Assumed Premiums Earned AssumedPremiumsEarned	1826000000	usd
CY2021	us-gaap	Assumed Premiums Earned AssumedPremiumsEarned	1598500000	usd
CY2023	spnt	Premiums Earned Gross PremiumsEarnedGross	3324000000	usd
CY2022	spnt	Premiums Earned Gross PremiumsEarnedGross	3068800000	usd
CY2021	spnt	Premiums Earned Gross PremiumsEarnedGross	2199300000	usd
CY2023	us-gaap	Ceded Premiums Earned CededPremiumsEarned	897800000	usd
CY2022	us-gaap	Ceded Premiums Earned CededPremiumsEarned	750700000	usd
CY2021	us-gaap	Ceded Premiums Earned CededPremiumsEarned	482300000	usd
CY2023	us-gaap	Premiums Earned Net PremiumsEarnedNet	2426200000	usd
CY2022	us-gaap	Premiums Earned Net PremiumsEarnedNet	2318100000	usd
CY2021	us-gaap	Premiums Earned Net PremiumsEarnedNet	1717000000	usd
CY2023	us-gaap	Policyholder Benefits And Claims Incurred Gross PolicyholderBenefitsAndClaimsIncurredGross	1008600000	usd
CY2022	us-gaap	Policyholder Benefits And Claims Incurred Gross PolicyholderBenefitsAndClaimsIncurredGross	778000000.0	usd
CY2021	us-gaap	Policyholder Benefits And Claims Incurred Gross PolicyholderBenefitsAndClaimsIncurredGross	349300000	usd
CY2023	us-gaap	Reinsurance Effect On Claims And Benefits Incurred Amount Assumed ReinsuranceEffectOnClaimsAndBenefitsIncurredAmountAssumed	910500000	usd
CY2022	us-gaap	Reinsurance Effect On Claims And Benefits Incurred Amount Assumed ReinsuranceEffectOnClaimsAndBenefitsIncurredAmountAssumed	1386800000	usd
CY2021	us-gaap	Reinsurance Effect On Claims And Benefits Incurred Amount Assumed ReinsuranceEffectOnClaimsAndBenefitsIncurredAmountAssumed	1506100000	usd
CY2023	spnt	Policyholder Benefits And Claims Incurred Direct And Assumed PolicyholderBenefitsAndClaimsIncurredDirectAndAssumed	1919100000	usd
CY2022	spnt	Policyholder Benefits And Claims Incurred Direct And Assumed PolicyholderBenefitsAndClaimsIncurredDirectAndAssumed	2164800000	usd
CY2021	spnt	Policyholder Benefits And Claims Incurred Direct And Assumed PolicyholderBenefitsAndClaimsIncurredDirectAndAssumed	1855400000	usd
CY2023	us-gaap	Reinsurance Effect On Claims And Benefits Incurred Amount Ceded ReinsuranceEffectOnClaimsAndBenefitsIncurredAmountCeded	537800000	usd
CY2022	us-gaap	Reinsurance Effect On Claims And Benefits Incurred Amount Ceded ReinsuranceEffectOnClaimsAndBenefitsIncurredAmountCeded	576400000	usd
CY2021	us-gaap	Reinsurance Effect On Claims And Benefits Incurred Amount Ceded ReinsuranceEffectOnClaimsAndBenefitsIncurredAmountCeded	528900000	usd
CY2023	us-gaap	Policyholder Benefits And Claims Incurred Net PolicyholderBenefitsAndClaimsIncurredNet	1381300000	usd
CY2022	us-gaap	Policyholder Benefits And Claims Incurred Net PolicyholderBenefitsAndClaimsIncurredNet	1588400000	usd
CY2021	us-gaap	Policyholder Benefits And Claims Incurred Net PolicyholderBenefitsAndClaimsIncurredNet	1326500000	usd
CY2023Q4	us-gaap	Reinsurance Recoverables On Paid And Unpaid Losses ReinsuranceRecoverablesOnPaidAndUnpaidLosses	2295100000	usd
CY2022Q4	us-gaap	Reinsurance Recoverables On Paid And Unpaid Losses ReinsuranceRecoverablesOnPaidAndUnpaidLosses	1376200000	usd
CY2023Q4	us-gaap	Premiums Receivable At Carrying Value PremiumsReceivableAtCarryingValue	1966300000	usd
CY2022Q4	us-gaap	Premiums Receivable At Carrying Value PremiumsReceivableAtCarryingValue	1876900000	usd
CY2023Q4	us-gaap	Reinsurance Recoverables On Paid And Unpaid Losses ReinsuranceRecoverablesOnPaidAndUnpaidLosses	2295100000	usd
CY2022Q4	us-gaap	Reinsurance Recoverables On Paid And Unpaid Losses ReinsuranceRecoverablesOnPaidAndUnpaidLosses	1376200000	usd
CY2023Q4	spnt	Other Assets Within Scope Of Credit Losses OtherAssetsWithinScopeOfCreditLosses	76800000	usd
CY2022Q4	spnt	Other Assets Within Scope Of Credit Losses OtherAssetsWithinScopeOfCreditLosses	52400000	usd
CY2023Q4	spnt	Assets Within Scope Of Credit Losses AssetsWithinScopeOfCreditLosses	4338200000	usd
CY2022Q4	spnt	Assets Within Scope Of Credit Losses AssetsWithinScopeOfCreditLosses	3305500000	usd
CY2023Q4	spnt	Assets Within Scope Of Credit Losses Allowance For Credit Loss AssetsWithinScopeOfCreditLossesAllowanceForCreditLoss	28800000	usd
CY2022Q4	spnt	Assets Within Scope Of Credit Losses Allowance For Credit Loss AssetsWithinScopeOfCreditLossesAllowanceForCreditLoss	34300000	usd
CY2023	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	-1500000	usd
CY2022	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	12700000	usd
CY2021	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	21000000	usd
CY2023Q4	us-gaap	Long Term Debt LongTermDebt	786200000	usd
CY2022Q4	us-gaap	Long Term Debt LongTermDebt	778000000.0	usd
CY2023	us-gaap	Interest Expense Debt InterestExpenseDebt	45400000	usd
CY2022	us-gaap	Interest Expense Debt InterestExpenseDebt	38600000	usd
CY2023	us-gaap	Interest Expense Other InterestExpenseOther	16200000	usd
CY2023	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	21500000	usd
CY2022	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	-151700000	usd
CY2021	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	178500000	usd
CY2023	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	318700000	usd
CY2022	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-422700000	usd
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CY2021	us-gaap	Incremental Common Shares Attributable To Call Options And Warrants IncrementalCommonSharesAttributableToCallOptionsAndWarrants	0	shares
CY2023	spnt	Incremental Common Shares Attributable To Financial Instruments Subject To Mandatory Redemption IncrementalCommonSharesAttributableToFinancialInstrumentsSubjectToMandatoryRedemption	1594281	shares
CY2022	spnt	Incremental Common Shares Attributable To Financial Instruments Subject To Mandatory Redemption IncrementalCommonSharesAttributableToFinancialInstrumentsSubjectToMandatoryRedemption	0	shares
CY2021	spnt	Incremental Common Shares Attributable To Financial Instruments Subject To Mandatory Redemption IncrementalCommonSharesAttributableToFinancialInstrumentsSubjectToMandatoryRedemption	0	shares
CY2023	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	169607348	shares
CY2022	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	160228588	shares
CY2021	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	150156466	shares
CY2023	us-gaap	Undistributed Earnings UndistributedEarnings	338800000	usd
CY2022	us-gaap	Undistributed Earnings UndistributedEarnings	-402800000	usd
CY2021	us-gaap	Undistributed Earnings UndistributedEarnings	44600000	usd
CY2023	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Basic UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic	24300000	usd
CY2022	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Basic UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic	0	usd
CY2021	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Basic UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic	3400000	usd
CY2023	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	314500000	usd
CY2022	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-402800000	usd
CY2021	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	41200000	usd
CY2023	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.93
CY2022	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-2.51
CY2021	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.28
CY2023	us-gaap	Undistributed Earnings Diluted UndistributedEarningsDiluted	338800000	usd
CY2022	us-gaap	Undistributed Earnings Diluted UndistributedEarningsDiluted	-402800000	usd
CY2021	us-gaap	Undistributed Earnings Diluted UndistributedEarningsDiluted	44600000	usd
CY2023	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Diluted UndistributedEarningsLossAllocatedToParticipatingSecuritiesDiluted	24300000	usd
CY2022	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Diluted UndistributedEarningsLossAllocatedToParticipatingSecuritiesDiluted	0	usd
CY2021	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Diluted UndistributedEarningsLossAllocatedToParticipatingSecuritiesDiluted	3400000	usd
CY2023	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	314500000	usd
CY2022	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	-402800000	usd
CY2021	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	41200000	usd
CY2023	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.85
CY2022	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-2.51
CY2021	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.27
CY2023	spnt	Related Party Transaction Expenses Income From Transactions With Related Party RelatedPartyTransactionExpensesIncomeFromTransactionsWithRelatedParty	6100000	usd
CY2022	spnt	Related Party Transaction Expenses Income From Transactions With Related Party RelatedPartyTransactionExpensesIncomeFromTransactionsWithRelatedParty	6100000	usd
CY2021	spnt	Related Party Transaction Expenses Income From Transactions With Related Party RelatedPartyTransactionExpensesIncomeFromTransactionsWithRelatedParty	93600000	usd
CY2023	us-gaap	Lease Cost LeaseCost	10300000	usd
CY2022	us-gaap	Lease Cost LeaseCost	12800000	usd
CY2021	us-gaap	Lease Cost LeaseCost	10500000	usd
CY2023Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	25600000	usd
CY2022Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	25900000	usd
CY2023Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	28400000	usd
CY2022Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	30300000	usd
CY2023Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P4Y1M6D
CY2022Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P5Y6M
CY2023Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.029
CY2022Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.031
CY2023Q4	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	6700000	usd
CY2023Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	5800000	usd
CY2023Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	5000000.0	usd
CY2023Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	4100000	usd
CY2023Q4	spnt	Lessee Operating Lease Liability To Be Paid Due After Year Four LesseeOperatingLeaseLiabilityToBePaidDueAfterYearFour	9200000	usd
CY2023Q4	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	30800000	usd
CY2023Q4	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	2400000	usd
CY2023Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	28400000	usd
CY2023Q4	spnt	Statutory Accounting Practices Statutory Amount For Dividends Declared StatutoryAccountingPracticesStatutoryAmountForDividendsDeclared	167000000	sek
CY2023Q4	spnt	Statutory Accounting Practices Statutory Amount For Dividends Declared StatutoryAccountingPracticesStatutoryAmountForDividendsDeclared	15400000	usd
CY2023Q4	us-gaap	Summary Of Investments Other Than Investments In Related Parties Cost SummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesCost	5820900000	usd
CY2023Q4	us-gaap	Summary Of Investments Other Than Investments In Related Parties Fair Value SummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesFairValue	5798300000	usd
CY2023Q4	us-gaap	Summary Of Investments Other Than Investments In Related Parties Carrying Amount SummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesCarryingAmount	5798300000	usd
CY2023Q4	us-gaap	Supplementary Insurance Information Deferred Policy Acquisition Costs SupplementaryInsuranceInformationDeferredPolicyAcquisitionCosts	308900000	usd
CY2023Q4	us-gaap	Supplementary Insurance Information Liability For Future Policy Benefits Losses Claims And Loss Expense Reserves SupplementaryInsuranceInformationLiabilityForFuturePolicyBenefitsLossesClaimsAndLossExpenseReserves	5608100000	usd
CY2023Q4	us-gaap	Supplementary Insurance Information Unearned Premiums SupplementaryInsuranceInformationUnearnedPremiums	1627300000	usd
CY2023	us-gaap	Supplementary Insurance Information Premium Revenue SupplementaryInsuranceInformationPremiumRevenue	2426200000	usd
CY2023	us-gaap	Supplementary Insurance Information Net Investment Income SupplementaryInsuranceInformationNetInvestmentIncome	272700000	usd
CY2023	us-gaap	Supplementary Insurance Information Benefits Claims Losses And Settlement Expense SupplementaryInsuranceInformationBenefitsClaimsLossesAndSettlementExpense	1381300000	usd
CY2023	us-gaap	Supplementary Insurance Information Amortization Of Deferred Policy Acquisition Costs SupplementaryInsuranceInformationAmortizationOfDeferredPolicyAcquisitionCosts	472700000	usd
CY2023	us-gaap	Supplementary Insurance Information Other Operating Expense SupplementaryInsuranceInformationOtherOperatingExpense	196300000	usd
CY2023	us-gaap	Supplementary Insurance Information Premiums Written SupplementaryInsuranceInformationPremiumsWritten	2437900000	usd
CY2022Q4	us-gaap	Supplementary Insurance Information Deferred Policy Acquisition Costs SupplementaryInsuranceInformationDeferredPolicyAcquisitionCosts	294900000	usd
CY2022Q4	us-gaap	Supplementary Insurance Information Liability For Future Policy Benefits Losses Claims And Loss Expense Reserves SupplementaryInsuranceInformationLiabilityForFuturePolicyBenefitsLossesClaimsAndLossExpenseReserves	5268700000	usd
CY2022Q4	us-gaap	Supplementary Insurance Information Unearned Premiums SupplementaryInsuranceInformationUnearnedPremiums	1521100000	usd
CY2022	us-gaap	Supplementary Insurance Information Premium Revenue SupplementaryInsuranceInformationPremiumRevenue	2318100000	usd
CY2022	us-gaap	Supplementary Insurance Information Net Investment Income SupplementaryInsuranceInformationNetInvestmentIncome	-322700000	usd
CY2022	us-gaap	Supplementary Insurance Information Benefits Claims Losses And Settlement Expense SupplementaryInsuranceInformationBenefitsClaimsLossesAndSettlementExpense	1588400000	usd
CY2022	us-gaap	Supplementary Insurance Information Amortization Of Deferred Policy Acquisition Costs SupplementaryInsuranceInformationAmortizationOfDeferredPolicyAcquisitionCosts	461900000	usd
CY2022	us-gaap	Supplementary Insurance Information Other Operating Expense SupplementaryInsuranceInformationOtherOperatingExpense	184500000	usd
CY2022	us-gaap	Supplementary Insurance Information Premiums Written SupplementaryInsuranceInformationPremiumsWritten	2549200000	usd
CY2021Q4	us-gaap	Supplementary Insurance Information Deferred Policy Acquisition Costs SupplementaryInsuranceInformationDeferredPolicyAcquisitionCosts	218800000	usd
CY2021Q4	us-gaap	Supplementary Insurance Information Liability For Future Policy Benefits Losses Claims And Loss Expense Reserves SupplementaryInsuranceInformationLiabilityForFuturePolicyBenefitsLossesClaimsAndLossExpenseReserves	4841400000	usd
CY2021Q4	us-gaap	Supplementary Insurance Information Unearned Premiums SupplementaryInsuranceInformationUnearnedPremiums	1198400000	usd
CY2021	us-gaap	Supplementary Insurance Information Premium Revenue SupplementaryInsuranceInformationPremiumRevenue	1717000000	usd
CY2021	us-gaap	Supplementary Insurance Information Net Investment Income SupplementaryInsuranceInformationNetInvestmentIncome	312500000	usd
CY2021	us-gaap	Supplementary Insurance Information Benefits Claims Losses And Settlement Expense SupplementaryInsuranceInformationBenefitsClaimsLossesAndSettlementExpense	1326500000	usd
CY2021	us-gaap	Supplementary Insurance Information Amortization Of Deferred Policy Acquisition Costs SupplementaryInsuranceInformationAmortizationOfDeferredPolicyAcquisitionCosts	387800000	usd
CY2021	us-gaap	Supplementary Insurance Information Other Operating Expense SupplementaryInsuranceInformationOtherOperatingExpense	158800000	usd
CY2021	us-gaap	Supplementary Insurance Information Premiums Written SupplementaryInsuranceInformationPremiumsWritten	1734200000	usd
CY2023	us-gaap	Direct Premiums Written DirectPremiumsWritten	1678700000	usd
CY2023	us-gaap	Ceded Premiums Written CededPremiumsWritten	989500000	usd
CY2023	us-gaap	Assumed Premiums Written AssumedPremiumsWritten	1748700000	usd
CY2023	us-gaap	Premiums Written Net PremiumsWrittenNet	2437900000	usd
CY2023	us-gaap	Premiums Percentage Assumed To Net PremiumsPercentageAssumedToNet	0.717
CY2022	us-gaap	Direct Premiums Written DirectPremiumsWritten	1403900000	usd
CY2022	us-gaap	Ceded Premiums Written CededPremiumsWritten	860500000	usd
CY2022	us-gaap	Assumed Premiums Written AssumedPremiumsWritten	2005800000	usd
CY2022	us-gaap	Premiums Written Net PremiumsWrittenNet	2549200000	usd
CY2022	us-gaap	Premiums Percentage Assumed To Net PremiumsPercentageAssumedToNet	0.787
CY2021	us-gaap	Direct Premiums Written DirectPremiumsWritten	718000000.0	usd
CY2021	us-gaap	Ceded Premiums Written CededPremiumsWritten	502300000	usd
CY2021	us-gaap	Assumed Premiums Written AssumedPremiumsWritten	1518500000	usd
CY2021	us-gaap	Premiums Written Net PremiumsWrittenNet	1734200000	usd
CY2021	us-gaap	Premiums Percentage Assumed To Net PremiumsPercentageAssumedToNet	0.876
CY2023Q4	us-gaap	Deferred Policy Acquisition Costs And Value Of Business Acquired DeferredPolicyAcquisitionCostsAndValueOfBusinessAcquired	308900000	usd
CY2023Q4	us-gaap	Liability For Claims And Claims Adjustment Expense LiabilityForClaimsAndClaimsAdjustmentExpense	5608100000	usd
CY2023Q4	us-gaap	Supplemental Information For Property Casualty Insurance Underwriters Unearned Premiums SupplementalInformationForPropertyCasualtyInsuranceUnderwritersUnearnedPremiums	1627300000	usd
CY2023	us-gaap	Supplemental Information For Property Casualty Insurance Underwriters Earned Premiums SupplementalInformationForPropertyCasualtyInsuranceUnderwritersEarnedPremiums	2426200000	usd
CY2023	us-gaap	Supplemental Information For Property Casualty Insurance Underwriters Net Investment Income SupplementalInformationForPropertyCasualtyInsuranceUnderwritersNetInvestmentIncome	272700000	usd
CY2023	us-gaap	Sec Schedule1218 Supplemental Information Property Casualty Insurance Underwriters Current Year Claim And Claim Adjustment Expense SecSchedule1218SupplementalInformationPropertyCasualtyInsuranceUnderwritersCurrentYearClaimAndClaimAdjustmentExpense	1555500000	usd
CY2023	us-gaap	Sec Schedule1218 Supplemental Information Property Casualty Insurance Underwriters Prior Year Claim And Claim Adjustment Expense SecSchedule1218SupplementalInformationPropertyCasualtyInsuranceUnderwritersPriorYearClaimAndClaimAdjustmentExpense	-174200000	usd
CY2023	us-gaap	Supplemental Information For Property Casualty Insurance Underwriters Amortization Of Deferred Policy Acquisition Costs SupplementalInformationForPropertyCasualtyInsuranceUnderwritersAmortizationOfDeferredPolicyAcquisitionCosts	472700000	usd
CY2023	us-gaap	Supplemental Information For Property Casualty Insurance Underwriters Paid Claims And Claims Adjustment Expense SupplementalInformationForPropertyCasualtyInsuranceUnderwritersPaidClaimsAndClaimsAdjustmentExpense	1184700000	usd
CY2023	us-gaap	Supplemental Information For Property Casualty Insurance Underwriters Premiums Written SupplementalInformationForPropertyCasualtyInsuranceUnderwritersPremiumsWritten	2437900000	usd
CY2022Q4	us-gaap	Supplemental Information For Property Casualty Insurance Underwriters Deferred Policy Acquisition Costs SupplementalInformationForPropertyCasualtyInsuranceUnderwritersDeferredPolicyAcquisitionCosts	294900000	usd
CY2022Q4	us-gaap	Supplemental Information For Property Casualty Insurance Underwriters Reserves For Unpaid Claims And Claims Adjustment Expense SupplementalInformationForPropertyCasualtyInsuranceUnderwritersReservesForUnpaidClaimsAndClaimsAdjustmentExpense	5268700000	usd
CY2022Q4	us-gaap	Supplemental Information For Property Casualty Insurance Underwriters Unearned Premiums SupplementalInformationForPropertyCasualtyInsuranceUnderwritersUnearnedPremiums	1521100000	usd
CY2022	us-gaap	Supplemental Information For Property Casualty Insurance Underwriters Earned Premiums SupplementalInformationForPropertyCasualtyInsuranceUnderwritersEarnedPremiums	2318100000	usd
CY2022	us-gaap	Supplemental Information For Property Casualty Insurance Underwriters Net Investment Income SupplementalInformationForPropertyCasualtyInsuranceUnderwritersNetInvestmentIncome	-322700000	usd
CY2022	us-gaap	Sec Schedule1218 Supplemental Information Property Casualty Insurance Underwriters Current Year Claim And Claim Adjustment Expense SecSchedule1218SupplementalInformationPropertyCasualtyInsuranceUnderwritersCurrentYearClaimAndClaimAdjustmentExpense	1609700000	usd
CY2022	us-gaap	Sec Schedule1218 Supplemental Information Property Casualty Insurance Underwriters Prior Year Claim And Claim Adjustment Expense SecSchedule1218SupplementalInformationPropertyCasualtyInsuranceUnderwritersPriorYearClaimAndClaimAdjustmentExpense	-21300000	usd
CY2022	us-gaap	Supplemental Information For Property Casualty Insurance Underwriters Amortization Of Deferred Policy Acquisition Costs SupplementalInformationForPropertyCasualtyInsuranceUnderwritersAmortizationOfDeferredPolicyAcquisitionCosts	461900000	usd
CY2022	us-gaap	Supplemental Information For Property Casualty Insurance Underwriters Paid Claims And Claims Adjustment Expense SupplementalInformationForPropertyCasualtyInsuranceUnderwritersPaidClaimsAndClaimsAdjustmentExpense	1255300000	usd
CY2022	us-gaap	Supplemental Information For Property Casualty Insurance Underwriters Premiums Written SupplementalInformationForPropertyCasualtyInsuranceUnderwritersPremiumsWritten	2549200000	usd
CY2021Q4	us-gaap	Supplemental Information For Property Casualty Insurance Underwriters Deferred Policy Acquisition Costs SupplementalInformationForPropertyCasualtyInsuranceUnderwritersDeferredPolicyAcquisitionCosts	218800000	usd
CY2021Q4	us-gaap	Supplemental Information For Property Casualty Insurance Underwriters Reserves For Unpaid Claims And Claims Adjustment Expense SupplementalInformationForPropertyCasualtyInsuranceUnderwritersReservesForUnpaidClaimsAndClaimsAdjustmentExpense	4841400000	usd
CY2021Q4	us-gaap	Supplemental Information For Property Casualty Insurance Underwriters Unearned Premiums SupplementalInformationForPropertyCasualtyInsuranceUnderwritersUnearnedPremiums	1198400000	usd
CY2021	us-gaap	Supplemental Information For Property Casualty Insurance Underwriters Earned Premiums SupplementalInformationForPropertyCasualtyInsuranceUnderwritersEarnedPremiums	1717000000	usd
CY2021	us-gaap	Supplemental Information For Property Casualty Insurance Underwriters Net Investment Income SupplementalInformationForPropertyCasualtyInsuranceUnderwritersNetInvestmentIncome	312500000	usd
CY2021	us-gaap	Sec Schedule1218 Supplemental Information Property Casualty Insurance Underwriters Current Year Claim And Claim Adjustment Expense SecSchedule1218SupplementalInformationPropertyCasualtyInsuranceUnderwritersCurrentYearClaimAndClaimAdjustmentExpense	1369100000	usd
CY2021	us-gaap	Sec Schedule1218 Supplemental Information Property Casualty Insurance Underwriters Prior Year Claim And Claim Adjustment Expense SecSchedule1218SupplementalInformationPropertyCasualtyInsuranceUnderwritersPriorYearClaimAndClaimAdjustmentExpense	-42600000	usd
CY2021	us-gaap	Supplemental Information For Property Casualty Insurance Underwriters Amortization Of Deferred Policy Acquisition Costs SupplementalInformationForPropertyCasualtyInsuranceUnderwritersAmortizationOfDeferredPolicyAcquisitionCosts	387800000	usd
CY2021	us-gaap	Supplemental Information For Property Casualty Insurance Underwriters Paid Claims And Claims Adjustment Expense SupplementalInformationForPropertyCasualtyInsuranceUnderwritersPaidClaimsAndClaimsAdjustmentExpense	1450100000	usd
CY2021	us-gaap	Supplemental Information For Property Casualty Insurance Underwriters Premiums Written SupplementalInformationForPropertyCasualtyInsuranceUnderwritersPremiumsWritten	1734200000	usd

Files In Submission

Name	View Source	Status
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$SPNT
SiriusPoint Ltd Stock $spnt

2024 Q1 Form 10-K Financial Statement

#000157601824000018 Filed on February 29, 2024

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$SPNT SiriusPoint Ltd Stock $spnt

2024 Q1 Form 10-K Financial Statement

#000157601824000018 Filed on February 29, 2024

Income Statement

Balance Sheet

Cashflow Statement

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Files In Submission

$SPNT
SiriusPoint Ltd Stock $spnt