$SPNT
SiriusPoint Ltd Stock $spnt

$spnt Overview Financials Valuation SEC Filings Company Website

2024 Q2 Form 10-Q Financial Statement

#000157601824000031 Filed on May 01, 2024

Income Statement

Concept	2024 Q2	2024 Q1
Revenue	$743.3M	$685.5M
YoY Change	-3.2%	0.09%
Cost Of Revenue
YoY Change
Gross Profit
YoY Change
Gross Profit Margin
Selling, General & Admin
YoY Change
% of Gross Profit
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$3.000M	$2.900M
YoY Change	3.45%	20.83%
% of Gross Profit
Operating Expenses	$595.0M	$563.1M
YoY Change	-8.42%	11.9%
Operating Profit
YoY Change
Interest Expense	$15.70M	$20.50M
YoY Change	-153.95%	89.81%
% of Operating Profit
Other Income/Expense, Net
YoY Change
Pretax Income	$129.0M	$105.6M
YoY Change	44.78%	-38.17%
Income Tax	$14.20M	$9.700M
% Of Pretax Income	11.01%	9.19%
Net Earnings	$113.9M	$94.80M
YoY Change	71.79%	-33.52%
Net Earnings / Revenue	15.32%	13.83%
Basic Earnings Per Share	$0.60	$0.50
Diluted Earnings Per Share	$0.57	$0.49
COMMON SHARES
Basic Shares Outstanding	170.5M shares	169.8M shares
Diluted Shares Outstanding	178.7M shares	174.4M shares

Balance Sheet

Concept	2024 Q2	2024 Q1
SHORT-TERM ASSETS
Cash & Short-Term Investments
YoY Change
Cash & Equivalents	$598.1M	$867.5M
Short-Term Investments
Other Short-Term Assets
YoY Change
Inventory
Prepaid Expenses
Receivables
Other Receivables
Total Short-Term Assets
YoY Change
LONG-TERM ASSETS
Property, Plant & Equipment	$22.90M	$24.20M
YoY Change	1.78%	0.41%
Goodwill
YoY Change
Intangibles	$146.8M	$149.8M
YoY Change	-7.38%	-7.47%
Long-Term Investments	$6.099B	$6.197B
YoY Change	2.45%	7.56%
Other Assets	$411.0M	$509.6M
YoY Change	58.38%	31.78%
Total Long-Term Assets
YoY Change
TOTAL ASSETS
Total Short-Term Assets
Total Long-Term Assets
Total Assets	$12.76B	$13.14B
YoY Change	1.12%	11.25%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$250.3M	$335.9M
YoY Change	6.24%	35.66%
Accrued Expenses	$25.40M	$26.60M
YoY Change	-1.17%	-5.34%
Deferred Revenue
YoY Change
Short-Term Debt	$0.00	$0.00
YoY Change
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities	$315.9M	$396.6M
YoY Change	9.16%	18.11%
LONG-TERM LIABILITIES
Long-Term Debt	$648.6M	$770.6M
YoY Change	-15.32%	-1.1%
Other Long-Term Liabilities	$117.7M	$237.8M
YoY Change	-47.55%	26.35%
Total Long-Term Liabilities	$766.3M	$1.008B
YoY Change	-22.62%	4.24%
TOTAL LIABILITIES
Total Short-Term Liabilities	$315.9M	$396.6M
Total Long-Term Liabilities	$766.3M	$1.008B
Total Liabilities	$10.06B	$10.52B
YoY Change	-2.99%	10.0%
SHAREHOLDERS EQUITY
Retained Earnings	$801.7M	$691.8M
YoY Change	71.63%	72.6%
Common Stock	$17.10M	$17.00M
YoY Change	4.91%	4.94%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$2.704B	$2.603B
YoY Change
Total Liabilities & Shareholders Equity	$12.76B	$13.14B
YoY Change	1.12%	11.25%

Cashflow Statement

Concept	2024 Q2	2024 Q1
OPERATING ACTIVITIES
Net Income	$113.9M	$94.80M
YoY Change	71.79%	-33.52%
Depreciation, Depletion And Amortization	$3.000M	$2.900M
YoY Change	3.45%	20.83%
Cash From Operating Activities	-$146.9M	$55.80M
YoY Change	-231.04%	-40.76%
INVESTING ACTIVITIES
Capital Expenditures
YoY Change
Acquisitions
YoY Change
Other Investing Activities	$16.10M	-$77.80M
YoY Change	-105.3%	-1375.41%
Cash From Investing Activities	$16.10M	-$77.80M
YoY Change	-105.3%	-1375.41%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-231.6M	$7.100M
YoY Change	1879.49%	-118.02%
NET CHANGE
Cash From Operating Activities	-146.9M	$55.80M
Cash From Investing Activities	16.10M	-$77.80M
Cash From Financing Activities	-231.6M	$7.100M
Net Change In Cash	-362.4M	-$14.90M
YoY Change	78.35%	-124.47%
FREE CASH FLOW
Cash From Operating Activities	-$146.9M	$55.80M
Capital Expenditures
Free Cash Flow
YoY Change

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2023Q4	us-gaap	Other Long Term Investments OtherLongTermInvestments	308500000	usd
CY2024Q1	us-gaap	Equity Securities Fv Ni Current And Noncurrent EquitySecuritiesFvNiCurrentAndNoncurrent	1600000	usd
CY2023Q4	us-gaap	Equity Securities Fv Ni Current And Noncurrent EquitySecuritiesFvNiCurrentAndNoncurrent	1600000	usd
CY2024Q1	us-gaap	Investments Investments	6197200000	usd
CY2023Q4	us-gaap	Investments Investments	6077600000	usd
CY2024Q1	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	867500000	usd
CY2023Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	969200000	usd
CY2024Q1	us-gaap	Restricted Cash And Cash Equivalents RestrictedCashAndCashEquivalents	218900000	usd
CY2023Q4	us-gaap	Restricted Cash And Cash Equivalents RestrictedCashAndCashEquivalents	132100000	usd
CY2024Q1	spnt	Redemption Receivable Related Party Investment Fund RedemptionReceivableRelatedPartyInvestmentFund	0	usd
CY2023Q4	spnt	Redemption Receivable Related Party Investment Fund RedemptionReceivableRelatedPartyInvestmentFund	3000000.0	usd
CY2023Q4	us-gaap	Receivables From Brokers Dealers And Clearing Organizations ReceivablesFromBrokersDealersAndClearingOrganizations	5600000	usd
CY2024Q1	us-gaap	Accrued Investment Income Receivable AccruedInvestmentIncomeReceivable	44500000	usd
CY2023Q4	us-gaap	Accrued Investment Income Receivable AccruedInvestmentIncomeReceivable	42300000	usd
CY2024Q1	us-gaap	Premiums Receivable At Carrying Value PremiumsReceivableAtCarryingValue	2127200000	usd
CY2023Q4	us-gaap	Premiums Receivable At Carrying Value PremiumsReceivableAtCarryingValue	1966300000	usd
CY2024Q1	us-gaap	Deferred Policy Acquisition Costs And Value Of Business Acquired DeferredPolicyAcquisitionCostsAndValueOfBusinessAcquired	320800000	usd
CY2023Q4	us-gaap	Deferred Policy Acquisition Costs And Value Of Business Acquired DeferredPolicyAcquisitionCostsAndValueOfBusinessAcquired	308900000	usd
CY2024Q1	us-gaap	Prepaid Reinsurance Premiums PrepaidReinsurancePremiums	494800000	usd
CY2023Q4	us-gaap	Prepaid Reinsurance Premiums PrepaidReinsurancePremiums	449200000	usd
CY2024Q1	us-gaap	Reinsurance Recoverables On Paid And Unpaid Losses ReinsuranceRecoverablesOnPaidAndUnpaidLosses	2233800000	usd
CY2023Q4	us-gaap	Reinsurance Recoverables On Paid And Unpaid Losses ReinsuranceRecoverablesOnPaidAndUnpaidLosses	2295100000	usd
CY2024Q1	us-gaap	Deferred Income Tax Assets Net DeferredIncomeTaxAssetsNet	290700000	usd
CY2023Q4	us-gaap	Deferred Income Tax Assets Net DeferredIncomeTaxAssetsNet	293600000	usd
CY2024Q1	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	149800000	usd
CY2023Q4	us-gaap	Assets Assets	12871500000	usd
CY2024Q1	us-gaap	Liability For Claims And Claims Adjustment Expense LiabilityForClaimsAndClaimsAdjustmentExpense	5565300000	usd
CY2023Q4	us-gaap	Liability For Claims And Claims Adjustment Expense LiabilityForClaimsAndClaimsAdjustmentExpense	5608100000	usd
CY2024Q1	us-gaap	Unearned Premiums UnearnedPremiums	1715700000	usd
CY2023Q4	us-gaap	Unearned Premiums UnearnedPremiums	1627300000	usd
CY2023Q4	us-gaap	Long Term Debt LongTermDebt	786200000	usd
CY2024Q1	us-gaap	Debt Securities Available For Sale Excluding Accrued Interest DebtSecuritiesAvailableForSaleExcludingAccruedInterest	5057500000	usd
CY2023Q4	us-gaap	Debt Securities Available For Sale Excluding Accrued Interest DebtSecuritiesAvailableForSaleExcludingAccruedInterest	4755400000	usd
CY2024Q1	us-gaap	Trading Securities Debt TradingSecuritiesDebt	406000000.0	usd
CY2023Q4	us-gaap	Trading Securities Debt TradingSecuritiesDebt	534900000	usd
CY2023Q4	us-gaap	Other Short Term Investments OtherShortTermInvestments	371600000	usd
CY2024Q1	us-gaap	Other Long Term Investments OtherLongTermInvestments	296600000	usd
CY2023Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	152700000	usd
CY2024Q1	us-gaap	Reinsurance Payable ReinsurancePayable	1780500000	usd
CY2023Q4	us-gaap	Reinsurance Payable ReinsurancePayable	1736700000	usd
CY2024Q1	us-gaap	Deposit Contracts Liabilities DepositContractsLiabilities	128800000	usd
CY2023Q4	us-gaap	Deposit Contracts Liabilities DepositContractsLiabilities	134400000	usd
CY2024Q1	spnt	Liability For Claims And Claims Adjustment Expense Deferred Gain On Retroactive Reinsurance Contracts LiabilityForClaimsAndClaimsAdjustmentExpenseDeferredGainOnRetroactiveReinsuranceContracts	25800000	usd
CY2023Q4	spnt	Liability For Claims And Claims Adjustment Expense Deferred Gain On Retroactive Reinsurance Contracts LiabilityForClaimsAndClaimsAdjustmentExpenseDeferredGainOnRetroactiveReinsuranceContracts	27900000	usd
CY2024Q1	us-gaap	Long Term Debt LongTermDebt	770600000	usd
CY2024Q1	us-gaap	Trading Securities Debt Amortized Cost TradingSecuritiesDebtAmortizedCost	433300000	usd
CY2023Q4	us-gaap	Trading Securities Debt Amortized Cost TradingSecuritiesDebtAmortizedCost	568100000	usd
CY2024Q1	us-gaap	Debt Securities Available For Sale Amortized Cost Excluding Accrued Interest After Allowance For Credit Loss DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestAfterAllowanceForCreditLoss	5075400000	usd
CY2023Q4	us-gaap	Debt Securities Available For Sale Amortized Cost Excluding Accrued Interest After Allowance For Credit Loss DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestAfterAllowanceForCreditLoss	4754600000	usd
CY2024Q1	us-gaap	Debt Securities Available For Sale Amortized Cost Allowance For Credit Loss Excluding Accrued Interest DebtSecuritiesAvailableForSaleAmortizedCostAllowanceForCreditLossExcludingAccruedInterest	0.0	usd
CY2023Q4	us-gaap	Debt Securities Available For Sale Amortized Cost Allowance For Credit Loss Excluding Accrued Interest DebtSecuritiesAvailableForSaleAmortizedCostAllowanceForCreditLossExcludingAccruedInterest	0.0	usd
CY2024Q1	spnt	Other Short Term Investments Cost OtherShortTermInvestmentsCost	330000000.0	usd
CY2023Q4	spnt	Other Short Term Investments Cost OtherShortTermInvestmentsCost	370800000	usd
CY2024Q1	spnt	Other Long Term Investments Cost OtherLongTermInvestmentsCost	343100000	usd
CY2023Q4	spnt	Other Long Term Investments Cost OtherLongTermInvestmentsCost	356200000	usd
CY2024Q1	spnt	Other Long Term Investments Related Parties OtherLongTermInvestmentsRelatedParties	170600000	usd
CY2023Q4	spnt	Other Long Term Investments Related Parties OtherLongTermInvestmentsRelatedParties	173700000	usd
CY2024Q1	us-gaap	Equity Securities Fv Ni Cost EquitySecuritiesFvNiCost	1600000	usd
CY2023Q4	us-gaap	Equity Securities Fv Ni Cost EquitySecuritiesFvNiCost	1900000	usd
CY2024Q1	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	169753232	shares
CY2023Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	168120022	shares
CY2024Q1	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	169753232	shares
CY2023Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	168120022	shares
CY2023Q4	us-gaap	Operating Lease Right Of Use Asset Statement Of Financial Position Extensible List OperatingLeaseRightOfUseAssetStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2023#OtherAssets
CY2024Q1	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 Liability Statement Of Financial Position Extensible List OperatingLeaseLiabilityStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2023#AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent
CY2024Q1	us-gaap	Operating Lease Liability Statement Of Financial Position Extensible List OperatingLeaseLiabilityStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2023#AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent
CY2024Q1	us-gaap	Other Short Term Investments OtherShortTermInvestments	329900000	usd
CY2024Q1	spnt	Investments In Related Party Investment Funds InvestmentsInRelatedPartyInvestmentFunds	105600000	usd
CY2023Q4	spnt	Investments In Related Party Investment Funds InvestmentsInRelatedPartyInvestmentFunds	105600000	usd
CY2024Q1	us-gaap	Receivables From Brokers Dealers And Clearing Organizations ReceivablesFromBrokersDealersAndClearingOrganizations	16400000	usd
CY2024Q1	us-gaap	Other Assets OtherAssets	174200000	usd
CY2023Q4	us-gaap	Other Assets OtherAssets	175900000	usd
CY2024Q1	us-gaap	Assets Assets	13135800000	usd
CY2024Q1	srt	Payables To Broker Dealers And Clearing Organizations PayablesToBrokerDealersAndClearingOrganizations	60700000	usd
CY2023Q4	srt	Payables To Broker Dealers And Clearing Organizations PayablesToBrokerDealersAndClearingOrganizations	6200000	usd
CY2024Q1	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	48900000	usd
CY2023Q4	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	68700000	usd
CY2024Q1	us-gaap	Shares Subject To Mandatory Redemption Settlement Terms Amount SharesSubjectToMandatoryRedemptionSettlementTermsAmount	83200000	usd
CY2023Q4	us-gaap	Shares Subject To Mandatory Redemption Settlement Terms Amount SharesSubjectToMandatoryRedemptionSettlementTermsAmount	67300000	usd
CY2024Q1	us-gaap	Accounts Payable And Accrued Liabilities Current And Noncurrent AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent	335900000	usd
CY2023Q4	us-gaap	Accounts Payable And Accrued Liabilities Current And Noncurrent AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent	278100000	usd
CY2024Q1	us-gaap	Liabilities Liabilities	10515400000	usd
CY2023Q4	us-gaap	Liabilities Liabilities	10340900000	usd
CY2024Q1	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		usd
CY2023Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		usd
CY2024Q1	us-gaap	Common Stock Value CommonStockValue	17000000.0	usd
CY2023Q4	us-gaap	Common Stock Value CommonStockValue	16800000	usd
CY2024Q1	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	1711200000	usd
CY2023Q4	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	1693000000	usd
CY2024Q1	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	691800000	usd
CY2023Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	601000000.0	usd
CY2024Q1	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-17400000	usd
CY2023Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	3100000	usd
CY2024Q1	us-gaap	Stockholders Equity StockholdersEquity	2602600000	usd
CY2023Q4	us-gaap	Stockholders Equity StockholdersEquity	2513900000	usd
CY2024Q1	us-gaap	Minority Interest MinorityInterest	17800000	usd
CY2023Q4	us-gaap	Minority Interest MinorityInterest	16700000	usd
CY2024Q1	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	2620400000	usd
CY2023Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	2530600000	usd
CY2024Q1	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	13135800000	usd
CY2023Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	12871500000	usd
CY2024Q1	us-gaap	Premiums Earned Net PremiumsEarnedNet	593800000	usd
CY2023Q1	us-gaap	Premiums Earned Net PremiumsEarnedNet	595500000	usd
CY2024Q1	spnt	Gain Loss On Investments Related Party GainLossOnInvestmentsRelatedParty	0	usd
CY2023Q1	spnt	Gain Loss On Investments Related Party GainLossOnInvestmentsRelatedParty	800000	usd
CY2024Q1	spnt	Net Investment Income Loss And Gain Loss On Investments NetInvestmentIncomeLossAndGainLossOnInvestments	79800000	usd
CY2023Q1	spnt	Net Investment Income Loss And Gain Loss On Investments NetInvestmentIncomeLossAndGainLossOnInvestments	73800000	usd
CY2024Q1	us-gaap	Other Income OtherIncome	11900000	usd
CY2023Q1	us-gaap	Other Income OtherIncome	8800000	usd
CY2024Q1	us-gaap	Revenues Revenues	685500000	usd
CY2023Q1	us-gaap	Revenues Revenues	678100000	usd
CY2024Q1	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Incurred Claims1 LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredClaims1	317500000	usd
CY2023Q1	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Incurred Claims1 LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredClaims1	267100000	usd
CY2024Q1	us-gaap	Deferred Policy Acquisition Costs And Present Value Of Future Profits Amortization1 DeferredPolicyAcquisitionCostsAndPresentValueOfFutureProfitsAmortization1	144900000	usd
CY2023Q1	us-gaap	Deferred Policy Acquisition Costs And Present Value Of Future Profits Amortization1 DeferredPolicyAcquisitionCostsAndPresentValueOfFutureProfitsAmortization1	119700000	usd
CY2024Q1	us-gaap	Other Underwriting Expense OtherUnderwritingExpense	41800000	usd
CY2023Q1	us-gaap	Other Underwriting Expense OtherUnderwritingExpense	52200000	usd
CY2024Q1	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	56000000.0	usd
CY2023Q1	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	60000000.0	usd
CY2024Q1	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	2900000	usd
CY2023Q1	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	2400000	usd
CY2024Q1	us-gaap	Interest Expense InterestExpense	20500000	usd
CY2023Q1	us-gaap	Interest Expense InterestExpense	12800000	usd
CY2024Q1	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	3700000	usd
CY2023Q1	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	-100000	usd
CY2024Q1	us-gaap	Benefits Losses And Expenses BenefitsLossesAndExpenses	579900000	usd
CY2023Q1	us-gaap	Benefits Losses And Expenses BenefitsLossesAndExpenses	514300000	usd
CY2024Q1	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	105600000	usd
CY2023Q1	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	163800000	usd
CY2024Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	9700000	usd
CY2023Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	25500000	usd
CY2024Q1	us-gaap	Profit Loss ProfitLoss	95900000	usd
CY2023Q1	us-gaap	Profit Loss ProfitLoss	138300000	usd
CY2024Q1	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	1100000	usd
CY2023Q1	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	2400000	usd
CY2024Q1	us-gaap	Net Income Loss NetIncomeLoss	94800000	usd
CY2023Q1	us-gaap	Net Income Loss NetIncomeLoss	135900000	usd
CY2024Q1	us-gaap	Dividends Dividends	4000000.0	usd
CY2023Q1	us-gaap	Dividends Dividends	4000000.0	usd
CY2024Q1	us-gaap	Undistributed Earnings UndistributedEarnings	90800000	usd
CY2024Q1	us-gaap	Undistributed Earnings Diluted UndistributedEarningsDiluted	90800000	usd
CY2023Q1	us-gaap	Undistributed Earnings UndistributedEarnings	131900000	usd
CY2023Q1	us-gaap	Undistributed Earnings Diluted UndistributedEarningsDiluted	131900000	usd
CY2024Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.50
CY2023Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.76
CY2024Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.49
CY2023Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.74
CY2024Q1	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	168934114	shares
CY2023Q1	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	160905860	shares
CY2024Q1	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	174380963	shares
CY2023Q1	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	164130946	shares
CY2024Q1	us-gaap	Profit Loss ProfitLoss	95900000	usd
CY2023Q1	us-gaap	Profit Loss ProfitLoss	138300000	usd
CY2024Q1	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	-1800000	usd
CY2023Q1	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	-300000	usd
CY2024Q1	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	-18400000	usd
CY2023Q1	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	22900000	usd
CY2024Q1	us-gaap	Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax	300000	usd
CY2023Q1	us-gaap	Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax	600000	usd
CY2024Q1	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-20500000	usd
CY2023Q1	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	22000000.0	usd
CY2024Q1	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	75400000	usd
CY2023Q1	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	160300000	usd
CY2024Q1	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	1100000	usd
CY2023Q1	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	2400000	usd
CY2024Q1	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	74300000	usd
CY2023Q1	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	157900000	usd
CY2024Q1	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	2620400000	usd
CY2023Q1	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	2241300000	usd
CY2024Q1	us-gaap	Profit Loss ProfitLoss	95900000	usd
CY2023Q1	us-gaap	Profit Loss ProfitLoss	138300000	usd
CY2024Q1	us-gaap	Share Based Compensation ShareBasedCompensation	4100000	usd
CY2023Q1	us-gaap	Share Based Compensation ShareBasedCompensation	5600000	usd
CY2024Q1	spnt	Realized And Unrealized Gain Loss On Investments And Derivatives RealizedAndUnrealizedGainLossOnInvestmentsAndDerivatives	-4700000	usd
CY2023Q1	spnt	Realized And Unrealized Gain Loss On Investments And Derivatives RealizedAndUnrealizedGainLossOnInvestmentsAndDerivatives	12700000	usd
CY2024Q1	spnt	Gain Loss On Investments Related Party GainLossOnInvestmentsRelatedParty	0	usd
CY2023Q1	spnt	Gain Loss On Investments Related Party GainLossOnInvestmentsRelatedParty	800000	usd
CY2024Q1	spnt	Other Revenue Noncash OtherRevenueNoncash	-15900000	usd
CY2023Q1	spnt	Other Revenue Noncash OtherRevenueNoncash	-25100000	usd
CY2024Q1	spnt	Accretion Amortization Of Discounts And Premiums AccretionAmortizationOfDiscountsAndPremiums	18300000	usd
CY2023Q1	spnt	Accretion Amortization Of Discounts And Premiums AccretionAmortizationOfDiscountsAndPremiums	20200000	usd
CY2024Q1	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	2900000	usd
CY2023Q1	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	2400000	usd
CY2024Q1	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	17400000	usd
CY2023Q1	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	2800000	usd
CY2024Q1	us-gaap	Increase Decrease In Premiums Receivable IncreaseDecreaseInPremiumsReceivable	160100000	usd
CY2022Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	913700000	usd
CY2023Q1	us-gaap	Increase Decrease In Premiums Receivable IncreaseDecreaseInPremiumsReceivable	376900000	usd
CY2024Q1	spnt	Increase Decrease In Deferred Policy Acquisition Costs And Present Value Of Future Insurance Profits IncreaseDecreaseInDeferredPolicyAcquisitionCostsAndPresentValueOfFutureInsuranceProfits	11900000	usd
CY2023Q1	spnt	Increase Decrease In Deferred Policy Acquisition Costs And Present Value Of Future Insurance Profits IncreaseDecreaseInDeferredPolicyAcquisitionCostsAndPresentValueOfFutureInsuranceProfits	62200000	usd
CY2024Q1	us-gaap	Increase Decrease In Prepaid Reinsurance Premiums IncreaseDecreaseInPrepaidReinsurancePremiums	45600000	usd
CY2023Q1	us-gaap	Increase Decrease In Prepaid Reinsurance Premiums IncreaseDecreaseInPrepaidReinsurancePremiums	113500000	usd
CY2024Q1	us-gaap	Increase Decrease In Reinsurance Recoverable IncreaseDecreaseInReinsuranceRecoverable	-61300000	usd
CY2023Q1	us-gaap	Increase Decrease In Reinsurance Recoverable IncreaseDecreaseInReinsuranceRecoverable	15800000	usd
CY2024Q1	us-gaap	Increase Decrease In Deferred Income Taxes IncreaseDecreaseInDeferredIncomeTaxes	16900000	usd
CY2023Q1	us-gaap	Increase Decrease In Deferred Income Taxes IncreaseDecreaseInDeferredIncomeTaxes	-23900000	usd
CY2024Q1	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	1700000	usd
CY2023Q1	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	53800000	usd
CY2024Q1	us-gaap	Increase Decrease In Interest And Dividends Receivable IncreaseDecreaseInInterestAndDividendsReceivable	2200000	usd
CY2023Q1	us-gaap	Increase Decrease In Interest And Dividends Receivable IncreaseDecreaseInInterestAndDividendsReceivable	6800000	usd
CY2024Q1	us-gaap	Increase Decrease In Liability For Claims And Claims Adjustment Expense Reserve IncreaseDecreaseInLiabilityForClaimsAndClaimsAdjustmentExpenseReserve	-42800000	usd
CY2023Q1	us-gaap	Increase Decrease In Liability For Claims And Claims Adjustment Expense Reserve IncreaseDecreaseInLiabilityForClaimsAndClaimsAdjustmentExpenseReserve	50200000	usd
CY2024Q1	us-gaap	Increase Decrease In Unearned Premiums IncreaseDecreaseInUnearnedPremiums	88400000	usd
CY2023Q1	us-gaap	Increase Decrease In Unearned Premiums IncreaseDecreaseInUnearnedPremiums	312000000.0	usd
CY2024Q1	spnt	Increase Decrease In Liability For Claims And Claims Adjustment Expense Deferred Gain On Retroactive Reinsurance Contracts IncreaseDecreaseInLiabilityForClaimsAndClaimsAdjustmentExpenseDeferredGainOnRetroactiveReinsuranceContracts	-2100000	usd
CY2023Q1	spnt	Increase Decrease In Liability For Claims And Claims Adjustment Expense Deferred Gain On Retroactive Reinsurance Contracts IncreaseDecreaseInLiabilityForClaimsAndClaimsAdjustmentExpenseDeferredGainOnRetroactiveReinsuranceContracts	0	usd
CY2024Q1	us-gaap	Increase Decrease In Reinsurance Payables IncreaseDecreaseInReinsurancePayables	43800000	usd
CY2023Q1	us-gaap	Increase Decrease In Reinsurance Payables IncreaseDecreaseInReinsurancePayables	191300000	usd
CY2024Q1	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	57800000	usd
CY2023Q1	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	10900000	usd
CY2024Q1	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	55800000	usd
CY2023Q1	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	94200000	usd
CY2024Q1	us-gaap	Payments To Acquire Investments PaymentsToAcquireInvestments	977100000	usd
CY2023Q1	us-gaap	Payments To Acquire Investments PaymentsToAcquireInvestments	1259400000	usd
CY2024Q1	us-gaap	Proceeds From Sale Maturity And Collections Of Investments ProceedsFromSaleMaturityAndCollectionsOfInvestments	852600000	usd
CY2023Q1	us-gaap	Proceeds From Sale Maturity And Collections Of Investments ProceedsFromSaleMaturityAndCollectionsOfInvestments	1188500000	usd
CY2024Q1	spnt	Proceeds From Redemptions From Related Party Investment Funds ProceedsFromRedemptionsFromRelatedPartyInvestmentFunds	3000000.0	usd
CY2023Q1	spnt	Proceeds From Redemptions From Related Party Investment Funds ProceedsFromRedemptionsFromRelatedPartyInvestmentFunds	18500000	usd
CY2024Q1	spnt	Proceeds From Payments For Broker Dealer Related Receivables And Payables Net Investing Activities ProceedsFromPaymentsForBrokerDealerRelatedReceivablesAndPayablesNetInvestingActivities	43700000	usd
CY2023Q1	spnt	Proceeds From Payments For Broker Dealer Related Receivables And Payables Net Investing Activities ProceedsFromPaymentsForBrokerDealerRelatedReceivablesAndPayablesNetInvestingActivities	58500000	usd
CY2024Q1	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-77800000	usd
CY2023Q1	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	6100000	usd
CY2024Q1	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	1500000	usd
CY2023Q1	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	3000000.0	usd
CY2024Q1	us-gaap	Proceeds From Payments For In Securities Sold Under Agreements To Repurchase ProceedsFromPaymentsForInSecuritiesSoldUnderAgreementsToRepurchase	0	usd
CY2023Q1	us-gaap	Proceeds From Payments For In Securities Sold Under Agreements To Repurchase ProceedsFromPaymentsForInSecuritiesSoldUnderAgreementsToRepurchase	2300000	usd
CY2024Q1	us-gaap	Payments Of Dividends Preferred Stock And Preference Stock PaymentsOfDividendsPreferredStockAndPreferenceStock	4000000.0	usd
CY2023Q1	us-gaap	Payments Of Dividends Preferred Stock And Preference Stock PaymentsOfDividendsPreferredStockAndPreferenceStock	4000000.0	usd
CY2024Q1	spnt	Payments For Settlement Of Financial Instruments Subject To Mandatory Redemption PaymentsForSettlementOfFinancialInstrumentsSubjectToMandatoryRedemption	0	usd
CY2023Q1	spnt	Payments For Settlement Of Financial Instruments Subject To Mandatory Redemption PaymentsForSettlementOfFinancialInstrumentsSubjectToMandatoryRedemption	38500000	usd
CY2024Q1	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	15600000	usd
CY2023Q1	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	0	usd
CY2024Q1	spnt	Proceeds From Payments For Deposit Contracts Liabilities ProceedsFromPaymentsForDepositContractsLiabilities	-3000000.0	usd
CY2023Q1	spnt	Proceeds From Payments For Deposit Contracts Liabilities ProceedsFromPaymentsForDepositContractsLiabilities	3800000	usd
CY2024Q1	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	7100000	usd
CY2023Q1	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-39400000	usd
CY2024Q1	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-14900000	usd
CY2023Q1	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	60900000	usd
CY2023Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	1101300000	usd
CY2024Q1	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	1086400000	usd
CY2023Q1	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	974600000	usd
CY2024Q1	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	2900000	usd
CY2022Q3	spnt	Reinsurance Loss Portfolio Transfer Loss Reserves Covered ReinsuranceLossPortfolioTransferLossReservesCovered	1300000000	usd
CY2023Q2	spnt	Reinsurance Loss Portfolio Transfer Loss Reserves Covered ReinsuranceLossPortfolioTransferLossReservesCovered	905600000	usd
CY2024Q1	spnt	Liability For Claims And Claims Adjustment Expense Deferred Gain On Retroactive Reinsurance Contracts LiabilityForClaimsAndClaimsAdjustmentExpenseDeferredGainOnRetroactiveReinsuranceContracts	25800000	usd
CY2023Q1	spnt	Reinsurance Loss Portfolio Transfer Aggregate Limit Percentage Of Booked Reserves ReinsuranceLossPortfolioTransferAggregateLimitPercentageOfBookedReserves	1.30
CY2024Q1	us-gaap	Number Of Operating Segments NumberOfOperatingSegments	2	segment
CY2024Q1	us-gaap	Premiums Written Gross PremiumsWrittenGross	906600000	usd
CY2024Q1	us-gaap	Premiums Written Net PremiumsWrittenNet	639300000	usd
CY2024Q1	us-gaap	Premiums Earned Net PremiumsEarnedNet	593800000	usd
CY2024Q1	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Incurred Claims1 LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredClaims1	317500000	usd
CY2024Q1	us-gaap	Deferred Policy Acquisition Costs And Present Value Of Future Profits Amortization1 DeferredPolicyAcquisitionCostsAndPresentValueOfFutureProfitsAmortization1	144900000	usd
CY2024Q1	us-gaap	Other Underwriting Expense OtherUnderwritingExpense	41800000	usd
CY2024Q1	us-gaap	Underwriting Income Loss UnderwritingIncomeLoss	89600000	usd
CY2024Q1	spnt	Segment Income Loss SegmentIncomeLoss	89600000	usd
CY2024Q1	us-gaap	Net Investment Income NetInvestmentIncome	78800000	usd
CY2024Q1	us-gaap	Gain Loss On Investments GainLossOnInvestments	1000000.0	usd
CY2024Q1	us-gaap	Other Income OtherIncome	11900000	usd
CY2024Q1	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	56000000.0	usd
CY2024Q1	us-gaap	Interest Expense InterestExpense	20500000	usd
CY2024Q1	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	3700000	usd
CY2024Q1	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	105600000	usd
CY2024Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	9700000	usd
CY2024Q1	us-gaap	Profit Loss ProfitLoss	95900000	usd
CY2024Q1	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	1100000	usd
CY2024Q1	us-gaap	Net Income Loss NetIncomeLoss	94800000	usd
CY2024Q1	us-gaap	Loss Ratio LossRatio	0.535
CY2024Q1	us-gaap	Acquisition Cost Ratio AcquisitionCostRatio	0.244
CY2024Q1	us-gaap	Underwriting Expense Ratio UnderwritingExpenseRatio	0.070
CY2024Q1	us-gaap	Combined Ratio CombinedRatio	0.849
CY2023Q1	us-gaap	Premiums Written Gross PremiumsWrittenGross	1110500000	usd
CY2023Q1	us-gaap	Premiums Written Net PremiumsWrittenNet	791700000	usd
CY2023Q1	us-gaap	Premiums Earned Net PremiumsEarnedNet	595500000	usd
CY2023Q1	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Incurred Claims1 LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredClaims1	267100000	usd
CY2023Q1	us-gaap	Deferred Policy Acquisition Costs And Present Value Of Future Profits Amortization1 DeferredPolicyAcquisitionCostsAndPresentValueOfFutureProfitsAmortization1	119700000	usd
CY2023Q1	us-gaap	Other Underwriting Expense OtherUnderwritingExpense	52200000	usd
CY2023Q1	us-gaap	Underwriting Income Loss UnderwritingIncomeLoss	156500000	usd
CY2023Q1	spnt	Segment Income Loss SegmentIncomeLoss	156500000	usd
CY2023Q1	us-gaap	Net Investment Income NetInvestmentIncome	61700000	usd
CY2023Q1	us-gaap	Gain Loss On Investments GainLossOnInvestments	11300000	usd
CY2023Q1	spnt	Gain Loss On Investments Related Party GainLossOnInvestmentsRelatedParty	800000	usd
CY2023Q1	us-gaap	Other Income OtherIncome	8800000	usd
CY2023Q1	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	60000000.0	usd
CY2023Q1	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	2400000	usd
CY2023Q1	us-gaap	Interest Expense InterestExpense	12800000	usd
CY2023Q1	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	-100000	usd
CY2023Q1	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	163800000	usd
CY2023Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	25500000	usd
CY2023Q1	us-gaap	Profit Loss ProfitLoss	138300000	usd
CY2023Q1	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	2400000	usd
CY2023Q1	us-gaap	Net Income Loss NetIncomeLoss	135900000	usd
CY2023Q1	us-gaap	Loss Ratio LossRatio	0.449
CY2023Q1	us-gaap	Acquisition Cost Ratio AcquisitionCostRatio	0.201
CY2023Q1	us-gaap	Underwriting Expense Ratio UnderwritingExpenseRatio	0.088
CY2023Q1	us-gaap	Combined Ratio CombinedRatio	0.738
CY2024Q1	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	867500000	usd
CY2023Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	969200000	usd
CY2024Q1	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	1086400000	usd
CY2023Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	1101300000	usd
CY2024Q1	us-gaap	Restricted Investments RestrictedInvestments	2658500000	usd
CY2023Q4	us-gaap	Restricted Investments RestrictedInvestments	2668000000	usd
CY2024Q1	spnt	Cash Cash Equivalents Restricted Cash Restricted Cash Equivalents And Restricted Investments CashCashEquivalentsRestrictedCashRestrictedCashEquivalentsAndRestrictedInvestments	3744900000	usd
CY2023Q4	spnt	Cash Cash Equivalents Restricted Cash Restricted Cash Equivalents And Restricted Investments CashCashEquivalentsRestrictedCashRestrictedCashEquivalentsAndRestrictedInvestments	3769300000	usd
CY2024Q1	spnt	Cost And Equity Method Investments CostAndEquityMethodInvestments	73600000	usd
CY2024Q1	us-gaap	Assets Fair Value Disclosure AssetsFairValueDisclosure	6198600000	usd
CY2024Q1	us-gaap	Shares Subject To Mandatory Redemption Settlement Terms Amount SharesSubjectToMandatoryRedemptionSettlementTermsAmount	83200000	usd
CY2024Q1	us-gaap	Derivative Liabilities DerivativeLiabilities	20600000	usd
CY2024Q1	us-gaap	Liabilities Fair Value Disclosure LiabilitiesFairValueDisclosure	103800000	usd
CY2023Q4	spnt	Cost And Equity Method Investments CostAndEquityMethodInvestments	80100000	usd
CY2023Q4	us-gaap	Assets Fair Value Disclosure AssetsFairValueDisclosure	6093300000	usd
CY2023Q4	us-gaap	Securities Loaned Or Sold Under Agreements To Repurchase Fair Value Disclosure SecuritiesLoanedOrSoldUnderAgreementsToRepurchaseFairValueDisclosure	67300000	usd
CY2023Q4	us-gaap	Derivative Liabilities DerivativeLiabilities	6400000	usd
CY2023Q4	us-gaap	Liabilities Fair Value Disclosure LiabilitiesFairValueDisclosure	73700000	usd
CY2023Q4	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Value FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue	185400000	usd
CY2024Q1	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Transfers Net FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersNet	0	usd
CY2024Q1	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Purchases FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases	0	usd
CY2024Q1	spnt	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Sales And Settlements FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSalesAndSettlements	4600000	usd
CY2024Q1	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Gain Loss Included In Earnings1 FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1	-8800000	usd
CY2024Q1	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Value FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue	172000000.0	usd
CY2023Q4	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliations Recurring Basis Liability Value FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue	73700000	usd
CY2024Q1	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Liability Transfers Net FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityTransfersNet	0	usd
CY2024Q1	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Liability Purchases FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityPurchases	0	usd
CY2024Q1	spnt	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Liability Sales And Settlements FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilitySalesAndSettlements	1100000	usd
CY2024Q1	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Liability Gain Loss Included In Earnings FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityGainLossIncludedInEarnings	-29000000.0	usd
CY2024Q1	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliations Recurring Basis Liability Value FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue	103800000	usd
CY2022Q4	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Value FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue	240000000.0	usd
CY2023Q1	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Transfers Net FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersNet	0	usd
CY2023Q1	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Purchases FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases	2900000	usd
CY2023Q1	spnt	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Sales And Settlements FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSalesAndSettlements	2100000	usd
CY2023Q1	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Gain Loss Included In Earnings1 FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1	1100000	usd
CY2023Q1	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Value FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue	241900000	usd
CY2022Q4	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliations Recurring Basis Liability Value FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue	30000000.0	usd
CY2023Q1	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Liability Transfers Net FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityTransfersNet	0	usd
CY2023Q1	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Liability Purchases FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityPurchases	3200000	usd
CY2023Q1	spnt	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Liability Sales And Settlements FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilitySalesAndSettlements	-1500000	usd
CY2023Q1	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Liability Gain Loss Included In Earnings FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityGainLossIncludedInEarnings	-23700000	usd
CY2023Q1	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliations Recurring Basis Liability Value FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue	55400000	usd
CY2024Q1	us-gaap	Debt Securities Available For Sale Amortized Cost Excluding Accrued Interest Before Allowance For Credit Loss DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestBeforeAllowanceForCreditLoss	5075400000	usd
CY2024Q1	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	31400000	usd
CY2024Q1	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	48700000	usd
CY2024Q1	spnt	Debt Securities Available For Sale Accumulated Net Foreign Currency Gains Losses DebtSecuritiesAvailableForSaleAccumulatedNetForeignCurrencyGainsLosses	-600000	usd
CY2024Q1	us-gaap	Debt Securities Available For Sale Excluding Accrued Interest DebtSecuritiesAvailableForSaleExcludingAccruedInterest	5057500000	usd
CY2024Q1	us-gaap	Trading Securities Debt Amortized Cost TradingSecuritiesDebtAmortizedCost	433300000	usd
CY2024Q1	spnt	Debt Securities Trading Accumulated Unrecognized Gain DebtSecuritiesTradingAccumulatedUnrecognizedGain	700000	usd
CY2024Q1	spnt	Debt Securities Trading Accumulated Unrecognized Loss DebtSecuritiesTradingAccumulatedUnrecognizedLoss	28000000.0	usd
CY2024Q1	spnt	Debt Securities Trading Accumulated Net Foreign Currency Gains Losses DebtSecuritiesTradingAccumulatedNetForeignCurrencyGainsLosses	0	usd
CY2024Q1	us-gaap	Trading Securities Debt TradingSecuritiesDebt	406000000.0	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
CY2023Q4	us-gaap	Debt Securities Available For Sale Amortized Cost Allowance For Credit Loss Excluding Accrued Interest DebtSecuritiesAvailableForSaleAmortizedCostAllowanceForCreditLossExcludingAccruedInterest	0	usd
CY2024Q1	us-gaap	Debt Securities Available For Sale Amortized Cost Allowance For Credit Loss Excluding Accrued Interest DebtSecuritiesAvailableForSaleAmortizedCostAllowanceForCreditLossExcludingAccruedInterest	0	usd
CY2024Q1	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Number Of Positions DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerNumberOfPositions	735	security
CY2024Q1	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger	542300000	usd
CY2024Q1	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	20000000	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
CY2024Q1	spnt	Debt Securities Net Of Securities Sold Not Yet Purchased Weighted Average Duration DebtSecuritiesNetOfSecuritiesSoldNotYetPurchasedWeightedAverageDuration	P2Y10M24D
CY2023	spnt	Debt Securities Net Of Securities Sold Not Yet Purchased Weighted Average Duration DebtSecuritiesNetOfSecuritiesSoldNotYetPurchasedWeightedAverageDuration	P2Y9M18D
CY2024Q1	us-gaap	Available For Sale Securities Debt Maturities Next Rolling Twelve Months Amortized Cost Basis AvailableForSaleSecuritiesDebtMaturitiesNextRollingTwelveMonthsAmortizedCostBasis	460300000	usd
CY2024Q1	us-gaap	Available For Sale Securities Debt Maturities Next Rolling Twelve Months Fair Value AvailableForSaleSecuritiesDebtMaturitiesNextRollingTwelveMonthsFairValue	457700000	usd
CY2024Q1	spnt	Debt Securities Trading Maturity Allocated And Single Maturity Date Rolling Within One Year Amortized Cost DebtSecuritiesTradingMaturityAllocatedAndSingleMaturityDateRollingWithinOneYearAmortizedCost	14200000	usd
CY2024Q1	spnt	Debt Securities Trading Maturity Allocated And Single Maturity Date Rolling Within One Year Fair Value DebtSecuritiesTradingMaturityAllocatedAndSingleMaturityDateRollingWithinOneYearFairValue	14000000.0	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
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
CY2024Q1	us-gaap	Available For Sale Securities Debt Maturities Rolling Year Two Through Five Amortized Cost Basis AvailableForSaleSecuritiesDebtMaturitiesRollingYearTwoThroughFiveAmortizedCostBasis	2131500000	usd
CY2024Q1	us-gaap	Available For Sale Securities Debt Maturities Rolling Year Two Through Five Fair Value AvailableForSaleSecuritiesDebtMaturitiesRollingYearTwoThroughFiveFairValue	2116000000	usd
CY2024Q1	spnt	Debt Securities Trading Maturity Allocated And Single Maturity Date Rolling After One Through Five Years Amortized Cost DebtSecuritiesTradingMaturityAllocatedAndSingleMaturityDateRollingAfterOneThroughFiveYearsAmortizedCost	32900000	usd
CY2024Q1	spnt	Debt Securities Trading Maturity Allocated And Single Maturity Date Rolling After One Through Five Years Fair Value DebtSecuritiesTradingMaturityAllocatedAndSingleMaturityDateRollingAfterOneThroughFiveYearsFairValue	32200000	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
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
CY2024Q1	us-gaap	Available For Sale Securities Debt Maturities Rolling Year Six Through Ten Amortized Cost Basis AvailableForSaleSecuritiesDebtMaturitiesRollingYearSixThroughTenAmortizedCostBasis	272400000	usd
CY2024Q1	us-gaap	Available For Sale Securities Debt Maturities Rolling Year Six Through Ten Fair Value AvailableForSaleSecuritiesDebtMaturitiesRollingYearSixThroughTenFairValue	274200000	usd
CY2024Q1	spnt	Debt Securities Trading Maturity Allocated And Single Maturity Date Rolling After Five Through Ten Years Amortized Cost DebtSecuritiesTradingMaturityAllocatedAndSingleMaturityDateRollingAfterFiveThroughTenYearsAmortizedCost	19400000	usd
CY2024Q1	spnt	Debt Securities Trading Maturity Allocated And Single Maturity Date Rolling After Five Through Ten Years Fair Value DebtSecuritiesTradingMaturityAllocatedAndSingleMaturityDateRollingAfterFiveThroughTenYearsFairValue	17900000	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
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
CY2024Q1	us-gaap	Available For Sale Securities Debt Maturities Rolling After Year Ten Amortized Cost Basis AvailableForSaleSecuritiesDebtMaturitiesRollingAfterYearTenAmortizedCostBasis	2700000	usd
CY2024Q1	us-gaap	Available For Sale Securities Debt Maturities Rolling After Year Ten Fair Value AvailableForSaleSecuritiesDebtMaturitiesRollingAfterYearTenFairValue	2300000	usd
CY2024Q1	spnt	Debt Securities Trading Maturity Allocated And Single Maturity Date Rolling After Ten Years Amortized Cost DebtSecuritiesTradingMaturityAllocatedAndSingleMaturityDateRollingAfterTenYearsAmortizedCost	26500000	usd
CY2024Q1	spnt	Debt Securities Trading Maturity Allocated And Single Maturity Date Rolling After Ten Years Fair Value DebtSecuritiesTradingMaturityAllocatedAndSingleMaturityDateRollingAfterTenYearsFairValue	20800000	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
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
CY2024Q1	us-gaap	Debt Securities Available For Sale Amortized Cost Excluding Accrued Interest Before Allowance For Credit Loss DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestBeforeAllowanceForCreditLoss	5075400000	usd
CY2024Q1	us-gaap	Debt Securities Available For Sale Excluding Accrued Interest DebtSecuritiesAvailableForSaleExcludingAccruedInterest	5057500000	usd
CY2024Q1	us-gaap	Trading Securities Debt Amortized Cost TradingSecuritiesDebtAmortizedCost	433300000	usd
CY2024Q1	us-gaap	Trading Securities Debt TradingSecuritiesDebt	406000000.0	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	Debt Securities Available For Sale Excluding Accrued Interest DebtSecuritiesAvailableForSaleExcludingAccruedInterest	4755400000	usd
CY2023Q4	us-gaap	Trading Securities Debt Amortized Cost TradingSecuritiesDebtAmortizedCost	568100000	usd
CY2023Q4	us-gaap	Trading Securities Debt TradingSecuritiesDebt	534900000	usd
CY2024Q1	us-gaap	Debt Securities Available For Sale Excluding Accrued Interest DebtSecuritiesAvailableForSaleExcludingAccruedInterest	5057500000	usd
CY2024Q1	us-gaap	Trading Securities Debt TradingSecuritiesDebt	406000000.0	usd
CY2023Q4	us-gaap	Debt Securities Available For Sale Excluding Accrued Interest DebtSecuritiesAvailableForSaleExcludingAccruedInterest	4755400000	usd
CY2023Q4	us-gaap	Trading Securities Debt TradingSecuritiesDebt	534900000	usd
CY2024Q1	us-gaap	Equity Securities Fv Ni Cost EquitySecuritiesFvNiCost	1600000	usd
CY2024Q1	spnt	Equity Securities Fvni Accumulated Unrecognized Gain EquitySecuritiesFVNIAccumulatedUnrecognizedGain	0	usd
CY2024Q1	spnt	Equity Securities Fvni Accumulated Unrecognized Loss EquitySecuritiesFVNIAccumulatedUnrecognizedLoss	200000	usd
CY2024Q1	spnt	Equity Securities Fvni Accumulated Net Foreign Currency Gains Losses EquitySecuritiesFVNIAccumulatedNetForeignCurrencyGainsLosses	200000	usd
CY2024Q1	us-gaap	Equity Securities Fv Ni Current And Noncurrent EquitySecuritiesFvNiCurrentAndNoncurrent	1600000	usd
CY2024Q1	spnt	Other Long Term Investments Cost OtherLongTermInvestmentsCost	343100000	usd
CY2024Q1	spnt	Other Long Term Investments Accumulated Unrecognized Gain OtherLongTermInvestmentsAccumulatedUnrecognizedGain	20700000	usd
CY2024Q1	spnt	Other Long Term Investments Accumulated Unrecognized Loss OtherLongTermInvestmentsAccumulatedUnrecognizedLoss	70300000	usd
CY2024Q1	spnt	Other Long Term Investments Accumulated Net Foreign Currency Gains Losses OtherLongTermInvestmentsAccumulatedNetForeignCurrencyGainsLosses	3100000	usd
CY2024Q1	us-gaap	Other Long Term Investments OtherLongTermInvestments	296600000	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	356200000	usd
CY2023Q4	spnt	Other Long Term Investments Accumulated Unrecognized Gain OtherLongTermInvestmentsAccumulatedUnrecognizedGain	20000000.0	usd
CY2023Q4	spnt	Other Long Term Investments Accumulated Unrecognized Loss OtherLongTermInvestmentsAccumulatedUnrecognizedLoss	70100000	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
CY2024Q1	us-gaap	Other Long Term Investments OtherLongTermInvestments	296600000	usd
CY2023Q4	us-gaap	Other Long Term Investments OtherLongTermInvestments	308500000	usd
CY2024Q1	us-gaap	Other Long Term Investments OtherLongTermInvestments	296600000	usd
CY2023Q4	us-gaap	Other Long Term Investments OtherLongTermInvestments	308500000	usd
CY2024Q1	us-gaap	Investment Income Investment Expense InvestmentIncomeInvestmentExpense	3900000	usd
CY2023Q1	us-gaap	Investment Income Investment Expense InvestmentIncomeInvestmentExpense	5400000	usd
CY2024Q1	spnt	Net Investment Income Loss And Gain Loss On Investments NetInvestmentIncomeLossAndGainLossOnInvestments	79800000	usd
CY2023Q1	spnt	Net Investment Income Loss And Gain Loss On Investments NetInvestmentIncomeLossAndGainLossOnInvestments	73800000	usd
CY2024Q1	spnt	Realized Investment Gains RealizedInvestmentGains	5500000	usd
CY2023Q1	spnt	Realized Investment Gains RealizedInvestmentGains	5800000	usd
CY2024Q1	spnt	Realized Investment Losses RealizedInvestmentLosses	9200000	usd
CY2023Q1	spnt	Realized Investment Losses RealizedInvestmentLosses	15600000	usd
CY2024Q1	us-gaap	Realized Investment Gains Losses RealizedInvestmentGainsLosses	-3700000	usd
CY2023Q1	us-gaap	Realized Investment Gains Losses RealizedInvestmentGainsLosses	-9800000	usd
CY2024Q1	us-gaap	Unrealized Gain Loss On Investments UnrealizedGainLossOnInvestments	4700000	usd
CY2023Q1	us-gaap	Unrealized Gain Loss On Investments UnrealizedGainLossOnInvestments	21100000	usd
CY2024Q1	us-gaap	Gain Loss On Investments GainLossOnInvestments	1000000.0	usd
CY2023Q1	us-gaap	Gain Loss On Investments GainLossOnInvestments	11300000	usd
CY2024Q1	spnt	Related Party Transaction Gain Loss On Investments RelatedPartyTransactionGainLossOnInvestments	-1900000	usd
CY2023Q1	spnt	Related Party Transaction Gain Loss On Investments RelatedPartyTransactionGainLossOnInvestments	1800000	usd
CY2024Q1	us-gaap	Debt Securities Available For Sale Realized Gain Loss DebtSecuritiesAvailableForSaleRealizedGainLoss	-300000	usd
CY2023Q1	us-gaap	Debt Securities Available For Sale Realized Gain Loss DebtSecuritiesAvailableForSaleRealizedGainLoss	-600000	usd
CY2024Q1	us-gaap	Debt Securities Trading Realized Gain Loss DebtSecuritiesTradingRealizedGainLoss	-3400000	usd
CY2023Q1	us-gaap	Debt Securities Trading Realized Gain Loss DebtSecuritiesTradingRealizedGainLoss	-7400000	usd
CY2024Q1	spnt	Gain Loss On Sale Of Other Short Term Investments GainLossOnSaleOfOtherShortTermInvestments	600000	usd
CY2023Q1	spnt	Gain Loss On Sale Of Other Short Term Investments GainLossOnSaleOfOtherShortTermInvestments	-200000	usd
CY2024Q1	spnt	Gain Loss On Sale Of Other Long Term Investments GainLossOnSaleOfOtherLongTermInvestments	-800000	usd
CY2023Q1	spnt	Gain Loss On Sale Of Other Long Term Investments GainLossOnSaleOfOtherLongTermInvestments	-400000	usd
CY2024Q1	spnt	Cash And Cash Equivalents Realized Gain Loss CashAndCashEquivalentsRealizedGainLoss	200000	usd
CY2023Q1	spnt	Cash And Cash Equivalents Realized Gain Loss CashAndCashEquivalentsRealizedGainLoss	-1200000	usd
CY2024Q1	us-gaap	Realized Investment Gains Losses RealizedInvestmentGainsLosses	-3700000	usd
CY2023Q1	us-gaap	Realized Investment Gains Losses RealizedInvestmentGainsLosses	-9800000	usd
CY2024Q1	us-gaap	Debt Securities Trading Unrealized Gain Loss DebtSecuritiesTradingUnrealizedGainLoss	5400000	usd
CY2023Q1	us-gaap	Debt Securities Trading Unrealized Gain Loss DebtSecuritiesTradingUnrealizedGainLoss	23000000.0	usd
CY2024Q1	spnt	Other Short Term Investments Unrealized Gain Loss OtherShortTermInvestmentsUnrealizedGainLoss	-900000	usd
CY2023Q1	spnt	Other Short Term Investments Unrealized Gain Loss OtherShortTermInvestmentsUnrealizedGainLoss	-400000	usd
CY2024Q1	us-gaap	Unrealized Gain Loss On Derivatives UnrealizedGainLossOnDerivatives	1000000.0	usd
CY2022Q4	us-gaap	Reinsurance Recoverables On Paid And Unpaid Losses ReinsuranceRecoverablesOnPaidAndUnpaidLosses	1376200000	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
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
CY2024Q1	us-gaap	Supplemental Information For Property Casualty Insurance Underwriters Current Year Claims And Claims Adjustment Expense SupplementalInformationForPropertyCasualtyInsuranceUnderwritersCurrentYearClaimsAndClaimsAdjustmentExpense	356400000	usd
CY2023Q1	us-gaap	Supplemental Information For Property Casualty Insurance Underwriters Current Year Claims And Claims Adjustment Expense SupplementalInformationForPropertyCasualtyInsuranceUnderwritersCurrentYearClaimsAndClaimsAdjustmentExpense	372500000	usd
CY2024Q1	us-gaap	Supplemental Information For Property Casualty Insurance Underwriters Prior Year Claims And Claims Adjustment Expense SupplementalInformationForPropertyCasualtyInsuranceUnderwritersPriorYearClaimsAndClaimsAdjustmentExpense	-38900000	usd
CY2023Q1	us-gaap	Supplemental Information For Property Casualty Insurance Underwriters Prior Year Claims And Claims Adjustment Expense SupplementalInformationForPropertyCasualtyInsuranceUnderwritersPriorYearClaimsAndClaimsAdjustmentExpense	-105400000	usd
CY2024Q1	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Incurred Claims1 LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredClaims1	317500000	usd
CY2023Q1	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Incurred Claims1 LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredClaims1	267100000	usd
CY2024Q1	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Claims Paid Current Year1 LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidCurrentYear1	44000000.0	usd
CY2023Q1	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Claims Paid Current Year1 LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidCurrentYear1	36400000	usd
CY2023Q1	us-gaap	Unrealized Gain Loss On Derivatives UnrealizedGainLossOnDerivatives	0	usd
CY2024Q1	spnt	Other Long Term Investments Unrealized Gain Loss OtherLongTermInvestmentsUnrealizedGainLoss	1300000	usd
CY2023Q1	spnt	Other Long Term Investments Unrealized Gain Loss OtherLongTermInvestmentsUnrealizedGainLoss	-3000000.0	usd
CY2024Q1	spnt	Cash And Cash Equivalents Unrealized Gain Loss CashAndCashEquivalentsUnrealizedGainLoss	-2100000	usd
CY2023Q1	spnt	Cash And Cash Equivalents Unrealized Gain Loss CashAndCashEquivalentsUnrealizedGainLoss	1500000	usd
CY2024Q1	us-gaap	Unrealized Gain Loss On Investments UnrealizedGainLossOnInvestments	4700000	usd
CY2023Q1	us-gaap	Unrealized Gain Loss On Investments UnrealizedGainLossOnInvestments	21100000	usd
CY2024Q1	spnt	Other Long Term Investments Unrealized Gain Loss OtherLongTermInvestmentsUnrealizedGainLoss	1300000	usd
CY2023Q1	spnt	Other Long Term Investments Unrealized Gain Loss OtherLongTermInvestmentsUnrealizedGainLoss	-3000000.0	usd
CY2023Q4	us-gaap	Minority Interest MinorityInterest	16700000	usd
CY2022Q4	us-gaap	Minority Interest MinorityInterest	7900000	usd
CY2024Q1	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	1100000	usd
CY2023Q1	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	2400000	usd
CY2024Q1	spnt	Noncontrolling Interest Increase Decrease From Contributions Redemptions NoncontrollingInterestIncreaseDecreaseFromContributionsRedemptions	0	usd
CY2023Q1	spnt	Noncontrolling Interest Increase Decrease From Contributions Redemptions NoncontrollingInterestIncreaseDecreaseFromContributionsRedemptions	1100000	usd
CY2024Q1	us-gaap	Minority Interest MinorityInterest	17800000	usd
CY2023Q1	us-gaap	Minority Interest MinorityInterest	11400000	usd
CY2024Q1	us-gaap	Schedule Of Liability For Unpaid Claims And Claims Adjustment Expense ScheduleOfLiabilityForUnpaidClaimsAndClaimsAdjustmentExpense	<div style="margin-top:9pt;text-align:justify"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">The following table represents the activity in the loss and loss adjustment expense reserves for the three months ended March 31, 2024 and 2023:</span></div><div style="margin-top:5pt;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:73.453%"></td><td style="width:0.1%"></td><td style="width:1.0%"></td><td style="width:11.251%"></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:11.252%"></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%">2024</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%">2023</span></td></tr><tr><td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">Gross reserves for loss and loss adjustment expenses, beginning of period</span></td><td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">$</span></td><td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 0;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">5,608.1 </span></td><td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></td><td colspan="3" style="background-color:#cceeff;padding:0 1pt"></td><td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">$</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%">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></tr><tr><td colspan="3" style="background-color:#ffffff;padding:2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">Less: loss and loss adjustment expenses recoverable, beginning of period</span></td><td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">(2,295.1)</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%">(1,376.2)</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"><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%">27.5 </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%">(1.0)</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 period</span></td><td colspan="2" style="background-color:#ffffff;border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">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></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:#cceeff;padding:2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">Increase (decrease) in net loss and loss adjustment expenses incurred in respect of losses occurring in:</span></td><td colspan="3" style="background-color:#cceeff;padding:0 1pt"></td><td colspan="3" style="background-color:#cceeff;padding:0 1pt"></td><td colspan="3" style="background-color:#cceeff;padding:0 1pt"></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%"> Current year</span></td><td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">356.4 </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%">372.5 </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%"> Prior years</span></td><td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">(38.9)</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%">(105.4)</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%">Total incurred loss and loss adjustment expenses</span></td><td colspan="2" style="background-color:#ffffff;border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">317.5 </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%">267.1 </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%">Net loss and loss adjustment expenses paid in respect of losses occurring in:</span></td><td colspan="3" style="background-color:#cceeff;border-top:1pt solid #000000;padding:0 1pt"></td><td colspan="3" style="background-color:#cceeff;padding:0 1pt"></td><td colspan="3" style="background-color:#cceeff;border-top:1pt solid #000000;padding:0 1pt"></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%"> Current year</span></td><td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">(44.0)</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%">(36.4)</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%"> Prior years</span></td><td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">(272.8)</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%">(202.1)</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%">Total net paid losses</span></td><td colspan="2" style="background-color:#ffffff;border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">(316.8)</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%">(238.5)</span></td><td style="background-color:#ffffff;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></td></tr><tr><td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">Foreign currency translation</span></td><td colspan="2" style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">15.8 </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%">6.0 </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="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:2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">Net reserves for loss and loss adjustment expenses, end of period</span></td><td colspan="2" style="background-color:#ffffff;border-top:1pt solid #000;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%">3,357.0 </span></td><td style="background-color:#ffffff;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 colspan="2" style="background-color:#ffffff;border-top:1pt solid #000;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%">3,926.1 </span></td><td style="background-color:#ffffff;border-top:1pt solid #000;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 period</span></td><td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">2,233.8 </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%">1,392.0 </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"><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 </span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:5.85pt;font-weight:400;line-height:100%;position:relative;top:-3.15pt;vertical-align:baseline">(1)</span></div></td><td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">(25.5)</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%">0.8 </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 period</span></td><td style="background-color:#cceeff;border-bottom:3pt double #000000;border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">$</span></td><td style="background-color:#cceeff;border-bottom:3pt double #000000;border-top:1pt solid #000000;padding:2px 0;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">5,565.3 </span></td><td style="background-color:#cceeff;border-bottom:3pt double #000000;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></td><td colspan="3" style="background-color:#cceeff;padding:0 1pt"></td><td style="background-color:#cceeff;border-bottom:3pt double #000000;border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">$</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%">5,318.9 </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:1pt;padding-left:13.5pt;text-align:justify;text-indent:-13.5pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:8pt;font-weight:400;line-height:120%">(1)</span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:8pt;font-weight:400;line-height:120%;padding-left:4.18pt">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 Claims And Claims Adjustment Expense LiabilityForClaimsAndClaimsAdjustmentExpense	5608100000	usd
CY2022Q4	us-gaap	Liability For Claims And Claims Adjustment Expense LiabilityForClaimsAndClaimsAdjustmentExpense	5268700000	usd
CY2023Q4	us-gaap	Reinsurance Recoverables On Paid And Unpaid Losses ReinsuranceRecoverablesOnPaidAndUnpaidLosses	2295100000	usd
CY2024Q1	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Claims Paid Prior Years1 LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidPriorYears1	272800000	usd
CY2023Q1	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Claims Paid Prior Years1 LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidPriorYears1	202100000	usd
CY2024Q1	us-gaap	Payments For Losses And Loss Adjustment Expense PaymentsForLossesAndLossAdjustmentExpense	316800000	usd
CY2023Q1	us-gaap	Payments For Losses And Loss Adjustment Expense PaymentsForLossesAndLossAdjustmentExpense	238500000	usd
CY2024Q1	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Foreign Currency Translation Gain Loss LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseForeignCurrencyTranslationGainLoss	-15800000	usd
CY2023Q1	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Foreign Currency Translation Gain Loss LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseForeignCurrencyTranslationGainLoss	-6000000.0	usd
CY2024Q1	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Net LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseNet	3357000000	usd
CY2023Q1	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Net LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseNet	3926100000	usd
CY2024Q1	us-gaap	Reinsurance Recoverables On Paid And Unpaid Losses ReinsuranceRecoverablesOnPaidAndUnpaidLosses	2233800000	usd
CY2023Q1	us-gaap	Reinsurance Recoverables On Paid And Unpaid Losses ReinsuranceRecoverablesOnPaidAndUnpaidLosses	1392000000	usd
CY2024Q1	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Opening Balance Adjustments LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseOpeningBalanceAdjustments	25500000	usd
CY2023Q1	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Opening Balance Adjustments LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseOpeningBalanceAdjustments	-800000	usd
CY2024Q1	us-gaap	Liability For Claims And Claims Adjustment Expense LiabilityForClaimsAndClaimsAdjustmentExpense	5565300000	usd
CY2023Q1	us-gaap	Liability For Claims And Claims Adjustment Expense LiabilityForClaimsAndClaimsAdjustmentExpense	5318900000	usd
CY2024Q1	us-gaap	Supplemental Information For Property Casualty Insurance Underwriters Prior Year Claims And Claims Adjustment Expense SupplementalInformationForPropertyCasualtyInsuranceUnderwritersPriorYearClaimsAndClaimsAdjustmentExpense	-38900000	usd
CY2023Q1	us-gaap	Supplemental Information For Property Casualty Insurance Underwriters Prior Year Claims And Claims Adjustment Expense SupplementalInformationForPropertyCasualtyInsuranceUnderwritersPriorYearClaimsAndClaimsAdjustmentExpense	-105400000	usd
CY2024Q1	us-gaap	Premiums Receivable At Carrying Value PremiumsReceivableAtCarryingValue	2127200000	usd
CY2023Q4	us-gaap	Premiums Receivable At Carrying Value PremiumsReceivableAtCarryingValue	1966300000	usd
CY2024Q1	us-gaap	Reinsurance Recoverables On Paid And Unpaid Losses ReinsuranceRecoverablesOnPaidAndUnpaidLosses	2233800000	usd
CY2023Q4	us-gaap	Reinsurance Recoverables On Paid And Unpaid Losses ReinsuranceRecoverablesOnPaidAndUnpaidLosses	2295100000	usd
CY2024Q1	spnt	Other Assets Within Scope Of Credit Losses OtherAssetsWithinScopeOfCreditLosses	84600000	usd
CY2023Q4	spnt	Other Assets Within Scope Of Credit Losses OtherAssetsWithinScopeOfCreditLosses	76800000	usd
CY2024Q1	spnt	Assets Within Scope Of Credit Losses AssetsWithinScopeOfCreditLosses	4445600000	usd
CY2023Q4	spnt	Assets Within Scope Of Credit Losses AssetsWithinScopeOfCreditLosses	4338200000	usd
CY2024Q1	spnt	Assets Within Scope Of Credit Losses Allowance For Credit Loss AssetsWithinScopeOfCreditLossesAllowanceForCreditLoss	28800000	usd
CY2023Q4	spnt	Assets Within Scope Of Credit Losses Allowance For Credit Loss AssetsWithinScopeOfCreditLossesAllowanceForCreditLoss	28800000	usd
CY2024Q1	us-gaap	Provision For Other Credit Losses ProvisionForOtherCreditLosses	0	usd
CY2023Q1	us-gaap	Provision For Other Credit Losses ProvisionForOtherCreditLosses	0	usd
CY2024Q1	us-gaap	Long Term Debt LongTermDebt	770600000	usd
CY2023Q4	us-gaap	Long Term Debt LongTermDebt	786200000	usd
CY2024Q1	us-gaap	Interest Expense Debt InterestExpenseDebt	11800000	usd
CY2023Q1	us-gaap	Interest Expense Debt InterestExpenseDebt	12800000	usd
CY2024Q1	us-gaap	Interest Expense Other InterestExpenseOther	7100000	usd
CY2023Q1	us-gaap	Interest Expense Other InterestExpenseOther	0	usd
CY2024Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	9700000	usd
CY2023Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	25500000	usd
CY2024Q1	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	105600000	usd
CY2023Q1	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	163800000	usd
CY2024Q1	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.092
CY2024Q1	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	2300000	usd
CY2024Q1	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	1600000	usd
CY2024Q1	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	300000000	shares
CY2024Q1	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.10
CY2023Q1	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	0	usd
CY2024Q1	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	0	usd
CY2024Q1	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	168934114	shares
CY2023Q1	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	160905860	shares
CY2024Q1	us-gaap	Incremental Common Shares Attributable To Call Options And Warrants IncrementalCommonSharesAttributableToCallOptionsAndWarrants	1605246	shares
CY2023Q1	us-gaap	Incremental Common Shares Attributable To Call Options And Warrants IncrementalCommonSharesAttributableToCallOptionsAndWarrants	0	shares
CY2024Q1	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	174380963	shares
CY2023Q1	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	164130946	shares
CY2024Q1	us-gaap	Undistributed Earnings UndistributedEarnings	90800000	usd
CY2023Q1	us-gaap	Undistributed Earnings UndistributedEarnings	131900000	usd
CY2024Q1	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Basic UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic	6100000	usd
CY2023Q1	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Basic UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic	10000000.0	usd
CY2024Q1	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	84700000	usd
CY2023Q1	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	121900000	usd
CY2024Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.50
CY2023Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.76
CY2024Q1	us-gaap	Undistributed Earnings Diluted UndistributedEarningsDiluted	90800000	usd
CY2023Q1	us-gaap	Undistributed Earnings Diluted UndistributedEarningsDiluted	131900000	usd
CY2024Q1	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Diluted UndistributedEarningsLossAllocatedToParticipatingSecuritiesDiluted	6100000	usd
CY2023Q1	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Diluted UndistributedEarningsLossAllocatedToParticipatingSecuritiesDiluted	10000000.0	usd
CY2024Q1	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	84700000	usd
CY2023Q1	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	121900000	usd
CY2024Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.49
CY2023Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.74
CY2024Q1	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	0	shares
CY2024Q1	spnt	Related Party Transaction Expenses Income From Transactions With Related Party RelatedPartyTransactionExpensesIncomeFromTransactionsWithRelatedParty	2100000	usd
CY2023Q1	spnt	Related Party Transaction Expenses Income From Transactions With Related Party RelatedPartyTransactionExpensesIncomeFromTransactionsWithRelatedParty	1700000	usd
	spnt	Class Of Warrant Or Right Exercised During Period ClassOfWarrantOrRightExercisedDuringPeriod	5418434	shares
CY2024Q1	us-gaap	Lease Cost LeaseCost	2200000	usd
CY2023Q1	us-gaap	Lease Cost LeaseCost	2500000	usd
CY2024Q1	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	24200000	usd
CY2023Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	25600000	usd
CY2024Q1	us-gaap	Operating Lease Liability OperatingLeaseLiability	26600000	usd
CY2023Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	28400000	usd
CY2024Q1	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P3Y10M24D
CY2023Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P4Y1M6D
CY2024Q1	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.029
CY2023Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.029
CY2024Q1	us-gaap	Lessee Operating Lease Liability Payments Remainder Of Fiscal Year LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear	4900000	usd
CY2024Q1	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	5800000	usd
CY2024Q1	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	5000000.0	usd
CY2024Q1	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	4100000	usd
CY2024Q1	spnt	Lessee Operating Lease Liability To Be Paid Due After Year Three LesseeOperatingLeaseLiabilityToBePaidDueAfterYearThree	9200000	usd
CY2024Q1	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	29000000.0	usd
CY2024Q1	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	2400000	usd
CY2024Q1	us-gaap	Operating Lease Liability OperatingLeaseLiability	26600000	usd
CY2024Q1	ecd	Non Rule10b51 Arr Adopted Flag NonRule10b51ArrAdoptedFlag	false
CY2024Q1	ecd	Rule10b51 Arr Adopted Flag Rule10b51ArrAdoptedFlag	false
CY2024Q1	ecd	Non Rule10b51 Arr Trmntd Flag NonRule10b51ArrTrmntdFlag	false
CY2024Q1	ecd	Rule10b51 Arr Trmntd Flag Rule10b51ArrTrmntdFlag	false

Files In Submission

Name	View Source	Status
0001576018-24-000031-index-headers.html	Edgar Link	pending
0001576018-24-000031-index.html	Edgar Link	pending
0001576018-24-000031.txt	Edgar Link	pending
0001576018-24-000031-xbrl.zip	Edgar Link	pending
exhibit31133124.htm	Edgar Link	pending
exhibit31233124.htm	Edgar Link	pending
exhibit32133124.htm	Edgar Link	pending
exhibit32233124.htm	Edgar Link	pending
Financial_Report.xlsx	Edgar Link	pending
MetaLinks.json	Edgar Link	pending
R1.htm	Edgar Link	pending
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FilingSummary.xml	Edgar Link	unprocessable
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R90.htm	Edgar Link	pending
report.css	Edgar Link	pending
Show.js	Edgar Link	pending
spnt-20240331.htm	Edgar Link	pending
spnt-20240331.xsd	Edgar Link	pending
spnt-20240331_cal.xml	Edgar Link	unprocessable
spnt-20240331_lab.xml	Edgar Link	unprocessable
spnt-20240331_pre.xml	Edgar Link	unprocessable
spnt-20240331_htm.xml	Edgar Link	completed
spnt-20240331_def.xml	Edgar Link	unprocessable

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$SPNT
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2024 Q2 Form 10-Q Financial Statement

#000157601824000031 Filed on May 01, 2024

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$SPNT SiriusPoint Ltd Stock $spnt

2024 Q2 Form 10-Q Financial Statement

#000157601824000031 Filed on May 01, 2024

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$SPNT
SiriusPoint Ltd Stock $spnt