Accumulated amortization Finite-Lived Intangible Assets, Accumulated Amortization Global Agriculture Global Agriculture [Member] Global Agriculture SMA1 SMA1 [Member] SMA1 Award Timing Predetermined Award Timing Predetermined [Flag] Indefinite-Lived Intangible Assets [Axis] Indefinite-Lived Intangible Assets [Axis] Stock based compensation percent Effective Income Tax Rate Reconciliation, Tax Expense (Benefit), Share-Based Payment Arrangement, Percent Entity File Number Entity File Number Additional paid-in capital: Additional Paid-in Capital [Member] Fixed maturity securities, measurement input Fixed Maturity Securities, Measurement Input Fixed Maturity Securities, Measurement Input Reclassification adjustment for gains (losses) on securities no longer held, net of tax Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Net of Tax Tabular List, Table Tabular List [Table Text Block] Investments Schedule of Investments [Text Block] Schedule of Related Party Transactions Schedule of Related Party Transactions [Table Text Block] Commission and Fee Income and Underwriting Fee Income Commissions, Policy [Policy Text Block] Secured Overnight Financing Rate (SOFR) Secured Overnight Financing Rate (SOFR) [Member] Licenses License [Member] Measurement Basis [Axis] Measurement Basis [Axis] Other expenses Other Expenses Adjustment to Compensation: Adjustment to Compensation [Axis] 12 Months or More Debt Securities, Held-to-Maturity, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value Related Party Transactions Related Party Transactions Disclosure [Text Block] Named Executive Officers, Footnote Named Executive Officers, Footnote [Text Block] Commission and fee expenses Sales Commissions and Fees Commission and Fee Income and Underwriting Fee Income Revenue from Contract with Customer [Text Block] Financing Receivable Portfolio Segment [Domain] Financing Receivable Portfolio Segment [Domain] Syndicate Capacity Syndicate [Member] Syndicate Income tax expense Current Income Tax Expense (Benefit) Unsecured subordinated notes Unsecured Subordinated Notes [Member] Unsecured Subordinated Notes Adjustment to Compensation, Amount Adjustment to Compensation Amount Derivative assets, notional amount Derivative Asset, Notional Amount Options Share-Based Payment Arrangement, Option [Member] Antidilutive Securities [Axis] Antidilutive Securities [Axis] Total stockholders’ equity Stockholders' equity beginning balance Stockholders' equity ending balance Equity, Attributable to Parent Debt Securities, Available-for-Sale [Table] Debt Securities, Available-for-Sale [Table] Comprehensive income Other Comprehensive Income (Loss), Net of Tax [Abstract] Insider Trading Policies and Procedures [Line Items] Common stock, shares authorized (in shares) Common Stock, Shares Authorized Total managed premiums Managed Premium Managed Premium Written Fixed maturity securities, available-for-sale: Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract] Liabilities and stockholders’ equity Liabilities and Equity [Abstract] Market value of trust funds Funds Held under Reinsurance Agreements, Asset Fixed maturity securities OCI, Debt Securities, Available-for-Sale, Gain (Loss), before Adjustment and Tax Premiums and commissions receivable, net Premiums Receivable, Net Cover [Abstract] Portion at Fair Value Measurement Portion at Fair Value Measurement [Member] High Maximum [Member] Amortized Cost Debt Securities, Held-to-Maturity, Excluding Accrued Interest, before Allowance for Credit Loss Estimated average useful life (in years) Finite-Lived Intangible Asset, Useful Life Measurement Input, Incremental Cost of Capital Measurement Input, Incremental Cost of Capital [Member] Measurement Input, Incremental Cost of Capital Total Debt Securities, Available-for-Sale, Unrealized Loss Position Net, ending balance Finite-Lived Intangible Assets, Net Due after ten years Debt Securities, Available-for-Sale, Amortized Cost, Maturity, Allocated and Single Maturity Date, after Year 10 Available-for-sale and held-to-maturity, fair value Debt Securities, Available-for-Sale And Held-to-Maturity, Unrealized Loss Position [Abstract] Debt Securities, Available-for-Sale And Held-to-Maturity, Unrealized Loss Position Non-PEO NEO Average Total Compensation Amount Non-PEO NEO Average Total Compensation Amount Debt Instrument [Line Items] Debt Instrument [Line Items] Unearned premiums Business Combination, Recognized Liability Assumed, Unearned Premiums Business Combination, Recognized Liability Assumed, Unearned Premiums Adjustment to Non-PEO NEO Compensation Footnote Adjustment to Non-PEO NEO Compensation Footnote [Text Block] Direct premiums Direct Premiums Earned Forgone Recovery due to Disqualification of Tax Benefits, Amount Forgone Recovery due to Disqualification of Tax Benefits, Amount Non-Rule 10b5-1 Arrangement Terminated Non-Rule 10b5-1 Arrangement Terminated [Flag] Income before income taxes Income before income taxes Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Entity Shell Company Entity Shell Company Funds at Lloyd's Business Combination, Recognized Asset Acquired, Lloyd's Funds Business Combination, Recognized Asset Acquired, Lloyd's Funds Schedule of Long-Term Debt Instruments [Table] Schedule of Long-Term Debt Instruments [Table] Statement of Stockholders' Equity [Abstract] Operating Segments Operating Segments [Member] Award Timing MNPI Considered Award Timing MNPI Considered [Flag] Net income Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent Other Managing General Insurance Agent And Broker, Other [Member] Managing General Insurance Agent And Broker, Other Document Fiscal Period Focus Document Fiscal Period Focus Goodwill and intangible assets, net Intangible Assets, Net (Including Goodwill) Award Timing Method Award Timing Method [Text Block] Award Type [Axis] Award Type [Axis] Hedging Relationship [Domain] Hedging Relationship [Domain] Energy Solutions Energy [Member] Energy Investment, Name [Domain] Investment, Name [Domain] Trading Symbol Trading Symbol Mortgage-backed securities Collateralized Securities [Member] Hospitality Hospitality Portfolio Segment [Member] Hospitality Portfolio Segment Total underwriting expenses Underwriting Expense Underwriting Expense Schedule of Intangible Assets and Goodwill Schedule of Intangible Assets and Goodwill [Table Text Block] Issuance of shares (in shares) Shares Issued, Shares, Share-Based Payment Arrangement, after Forfeiture Stock units Stock Units [Member] Stock Units Entity Address, City or Town Entity Address, City or Town Total Debt Securities, Available-for-Sale And Held-to-Maturity, Unrealized Loss Position Debt Securities, Available-for-Sale And Held-to-Maturity, Unrealized Loss Position Short-term investments Short Term Investment, Fair Value Disclosure Short Term Investment, Fair Value Disclosure Non-PEO NEO Average Compensation Actually Paid Amount Non-PEO NEO Average Compensation Actually Paid Amount Debt Interest Rate, First 8 Years Debt Instrument, Fixed Interest Rate, Period One [Member] Debt Instrument, Fixed Interest Rate, Period One Hudson Ventures Fund II LP units Hudson Ventures Fund 2, L.P. [Member] Hudson Ventures Fund 2, L.P. Compensation Actually Paid vs. Other Measure Compensation Actually Paid vs. Other Measure [Text Block] Business combination, consideration transferred Total consideration Business Combination, Consideration Transferred Entity Emerging Growth Company Entity Emerging Growth Company Less than 12 Months Debt Securities, Held-to-Maturity, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year [Member] Debt issuance costs Debt Issuance Costs, Net Restricted cash Restricted Cash and Cash Equivalent Energy Solutions Energy Solutions [Member] Energy Solutions Beginning balance Ending balance Indefinite-Lived Intangible Assets (Excluding Goodwill) Net commission and fee income Noninterest Income Common stock, shares outstanding (in shares) Common shares balance at beginning of period (in shares) Common shares balance at ending of period (in shares) Common Stock, Shares, Outstanding Insurance [Abstract] Gross Unrealized Losses Debt Securities, Held-to-Maturity, Accumulated Unrecognized Loss Reserves for losses and loss adjustment expenses Business Combination, Recognized Liability Assumed, Liability For Claims And Claims Adjustment Expense Business Combination, Recognized Liability Assumed, Liability For Claims And Claims Adjustment Expense Mortgage Loans Loans, Notes, Trade and Other Receivables Disclosure [Text Block] Schedule of Revenue Disaggregation of Revenue [Table Text Block] FHLB Loan FHLB Loan [Member] FHLB Loan Other Gain on Sale of Other Investments Gain on Sale of Other Investments Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year [Member] Schedule of Finite-Lived Intangible Assets, Future Amortization Expense Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block] Derivative Instruments and Hedging Activities Disclosure [Abstract] Accounts payable and accrued liabilities Accounts Payable and Accrued Liabilities Entity Address, Postal Zip Code Entity Address, Postal Zip Code Restatement Determination Date Restatement Determination Date Income tax expense Income Tax Expense (Benefit) Margin Debt Instrument, Basis Spread on Variable Rate Other assets Other Assets Beginning balance Ending balance Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value Pension Adjustments Service Cost Pension Adjustments Service Cost [Member] Designated as Hedging Instrument Designated as Hedging Instrument [Member] Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] Hedging Relationship [Axis] Hedging Relationship [Axis] Incurred, net of reinsurance, related to: Liability for Unpaid Claims and Claims Adjustment Expense, Incurred Claims [Abstract] Other Income and Expenses [Abstract] Compensation Actually Paid vs. Company Selected Measure Compensation Actually Paid vs. Company Selected Measure [Text Block] Additions Goodwill, Acquired During Period Net cash paid in acquisition Payments to Acquire Businesses, Net of Cash Acquired Cash provided by deposit accounting Proceeds From (Payments For) Deposit Accounting Proceeds From (Payments For) Deposit Accounting All Trading Arrangements All Trading Arrangements [Member] Equity Awards Adjustments, Footnote Equity Awards Adjustments, Footnote [Text Block] Total Shareholder Return Vs Peer Group Total Shareholder Return Vs Peer Group [Text Block] Loans held-for-investment, term Loans Held-for-Investment, Term Loans Held-for-Investment, Term Commitments and Contingencies Disclosure [Abstract] Reinsurance and premium payables Reinsurance Payable Subordinate Debt Due 2039 Unsecured Subordinated Notes Due 2039 [Member] Unsecured Subordinated Notes Due 2039 Other Unrealized Gain (Loss) on Other Investments Unrealized Gain (Loss) on Other Investments Net cash provided by operating activities Cash Provided by (Used in) Operating Activity, Including Discontinued Operation Change in receivable/payable for securities Payments For (Proceeds From) Sale and Collection of Securities Payments For (Proceeds From) Sale and Collection of Securities Debt instrument, term Debt Instrument, Term Effective Income Tax Rate Reconciliation [Table] Effective Income Tax Rate Reconciliation [Table] Fixed maturity securities, available-for-sale Proceeds from Sale of Debt Securities, Available-for-Sale Equity Method Investments and Joint Ventures [Abstract] Fixed maturity securities, available-for-sale, at fair value (net of allowance for credit losses of $6,500 and $7,000, respectively) (amortized cost of $2,208,212 and $1,848,755, respectively) Fair Value Total Total fixed maturity securities, available-for-sale Debt Securities, Available-for-Sale, Excluding Accrued Interest Sales/Disposals Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Sales Equity Method Investment, Nonconsolidated Investee or Group of Investees Equity Method Investment, Nonconsolidated Investee or Group of Investees [Member] Schedule of Equity Method Investments [Line Items] Schedule of Equity Method Investments [Line Items] Equity Valuation Assumption Difference, Footnote Equity Valuation Assumption Difference, Footnote [Text Block] PEO Total Compensation Amount PEO Total Compensation Amount Long-Term Debt, Type [Axis] Long-Term Debt, Type [Axis] Amortized cost Debt Securities, Available-for-Sale and Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss Assets acquired, excluding goodwill Business Combination, Recognized Asset Acquired, Asset [Abstract] Remainder of 2026 Finite-Lived Intangible Asset, Expected Amortization, Remainder of Fiscal Year Syndicate 1971 capacity - with fees Syndicate 1971 Capacity [Member] Syndicate 1971 Capacity Equity Components [Axis] Equity Components [Axis] Apollo Apollo [Member] Apollo Agency agreement Agency Agreement [Member] Agency Agreement Non-Rule 10b5-1 Arrangement Adopted Non-Rule 10b5-1 Arrangement Adopted [Flag] Number of reportable segments Number of Reportable Segments Variable Interest Entity Variable Interest Entity Disclosure [Text Block] Arena SOP LP units Arena SOP LP [Member] Arena SOP LP Entity Address, State or Province Entity Address, State or Province Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Antidilutive Security, Excluded EPS Calculation [Table] Effects of Reinsurance [Line Items] Effects of Reinsurance [Line Items] Mortgage loans Loans Receivable, Fair Value Disclosure Individual: Individual [Axis] Number of subsidiaries Number Of Subsidiaries Number Of Subsidiaries Income Tax Jurisdiction [Domain] Income Tax Jurisdiction [Domain] Subordinated debt, net of debt issuance costs Subordinated Debt, Net [Member] Subordinated Debt, Net Profit commission & consortium overrider charged to Managed Syndicates Profit Commission And Consortium Overrider Charged To Managed Syndicates [Member] Profit Commission And Consortium Overrider Charged To Managed Syndicates Without single maturity date Debt Securities, Available-for-Sale, Maturity, without Single Maturity Date, Amortized Cost Forgone Recovery, Explanation of Impracticability Forgone Recovery, Explanation of Impracticability [Text Block] Entity Interactive Data Current Entity Interactive Data Current Equity securities Equity Securities, FV-NI, Realized Gain Current period provision for credit losses Debt Securities, Held-to-Maturity, Excluding Accrued Interest, Credit Loss Expense (Reversal) Disaggregation of Revenue [Table] Disaggregation of Revenue [Table] Reinsurance recoverables, net Reinsurance recoverables Reinsurance Recoverable for Paid and Unpaid Claims and Claims Adjustments SMA2 SMA2 [Member] SMA2 Entity Central Index Key Entity Central Index Key PEO Name PEO Name Total revenues Revenues Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year [Member] Outstanding Aggregate Erroneous Compensation Amount Outstanding Aggregate Erroneous Compensation Amount Losses and loss adjustment expenses Losses and LAE Liability for Unpaid Claims and Claims Adjustment Expense, Incurred Claims Schedule of Segment Reporting Information, by Segment [Table] Schedule of Segment Reporting Information, by Segment [Table] Net premiums Premiums Written, Net Exercise Price Award Exercise Price Entity Filer Category Entity Filer Category Income tax expense at federal statutory rate Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent 2029 Finite-Lived Intangible Asset, Expected Amortization, Year Three Total Debt Securities, Available-for-Sale And Held-to-Maturity, Unrealized Loss Position, Accumulated Loss Debt Securities, Available-for-Sale And Held-to-Maturity, Unrealized Loss Position, Accumulated Loss Gross, beginning balance Finite-Lived Intangible Assets, Gross Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year [Member] Total expenses Benefits, Losses and Expenses Total gross written premiums Premiums Written, Gross Entity Address, Address Line One Entity Address, Address Line One Entity Address, Address Line Two Entity Address, Address Line Two Accumulated other comprehensive loss: AOCI Attributable to Parent [Member] Investments [Domain] Investments [Domain] Less: reinsurance recoverable on unpaid claims, beginning of period Plus: reinsurance recoverable on unpaid claims, end of period Ceded unpaid losses and LAE Reinsurance Recoverable for Unpaid Claims and Claims Adjustments Business Combination, Asset Acquisition, Transaction between Entities under Common Control, and Joint Venture Formation [Abstract] Fixed maturity securities, available-for-sale, at fair value Business Combination, Fixed Maturity Securities, Available-for-sale, at fair value Business Combination, Fixed Maturity Securities, Available-For-Sale, At Fair Value Derivatives Derivative Instruments and Hedging Activities Disclosure [Text Block] Fair Value as of Grant Date Award Grant Date Fair Value Schedule of Subordinated Debt Schedule of Long-Term Debt Instruments [Table Text Block] Adjustments to reconcile net income to net cash provided by operating activities Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity Diluted effect of awards (in shares) Incremental Common Shares Attributable to Dilutive Effect of Share-Based Payment Arrangements Related Party Transaction [Line Items] Related Party Transaction [Line Items] Options, at fair value Fair Value Hedge Assets Document Quarterly Report Document Quarterly Report Less than 12 Months Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, Less than 12 Months Long-term debt Long-Term Debt, Fair Value Schedule of Fair Value Measurement Inputs and Valuation Techniques Fair Value Measurement Inputs and Valuation Techniques [Table Text Block] Changed Peer Group, Footnote Changed Peer Group, Footnote [Text Block] Counterparty Name [Domain] Counterparty Name [Domain] 12 Months or More Debt Securities, Held-to-Maturity, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss Term Loan Credit Facility Term Loan Credit Facility [Member] Term Loan Credit Facility Adjustment To PEO Compensation, Footnote Adjustment To PEO Compensation, Footnote [Text Block] Investment Type [Axis] Investment Type [Axis] Total investments Investments Title Trading Arrangement, Individual Title Peer Group Total Shareholder Return Amount Peer Group Total Shareholder Return Amount Cash consideration Payments to Acquire Businesses, Gross Written Premiums Written, Gross [Abstract] Non-PEO NEO Non-PEO NEO [Member] Underwriting fee income Fee Income Change in short-term investments Payments for (Proceeds from) Short-Term Investments Gross Unrealized Gains Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Gain, before Tax Award Type [Domain] Award Type [Domain] Equity Awards Adjustments Equity Awards Adjustments [Member] Pension Benefits Adjustments, Footnote Pension Benefits Adjustments, Footnote [Text Block] Disaggregation of Revenue [Line Items] Disaggregation of Revenue [Line Items] Other income Other income Other Income Compensation Amount Outstanding Recovery Compensation Amount Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Schedule of Liability for Unpaid Claims and Claims Adjustment Expense Schedule of Liability for Unpaid Claims and Claims Adjustment Expense [Table Text Block] Recovery of Erroneously Awarded Compensation Disclosure [Line Items] Fair Value Estimate of Fair Value Measurement [Member] Reporting Unit [Domain] Reporting Unit [Domain] MNPI Disclosure Timed for Compensation Value MNPI Disclosure Timed for Compensation Value [Flag] Due after one year through five years Debt Securities, Available-for-Sale, Amortized Cost, Maturity, Allocated and Single Maturity Date, after Year One Through Five Foreign operations taxed at statutory tax rates Effective Income Tax Rate Reconciliation, Foreign Income Tax Rate Differential, Percent Unrealized gains and losses on investments: Debt Securities, Unrealized Gain (Loss) [Abstract] Deferred income taxes Business Combination, Recognized Asset Acquired, Deferred Tax Asset Revenues: Revenues [Abstract] Due after five years through ten years Debt Securities, Available-for-Sale, Amortized Cost, Maturity, Allocated and Single Maturity Date, after Year 5 Through 10 Number Of US Subsidiaries Number Of US Subsidiaries Number Of US Subsidiaries Accumulated other comprehensive (loss) income Accumulated Other Comprehensive Income (Loss), Net of Tax Goodwill, gross balance Goodwill, Gross Financial Instruments [Domain] Financial Instruments [Domain] Purchases Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Purchases BERMUDA BERMUDA Debt instrument, variable rate Debt Instrument, Credit Spread Adjustment Debt Instrument, Credit Spread Adjustment Other comprehensive (loss) income: Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract] Aggregate Pension Adjustments Service Cost Aggregate Pension Adjustments Service Cost [Member] Net Investment Income [Line Items] Net Investment Income [Line Items] Finite-Lived Intangible Assets by Major Class [Axis] Finite-Lived Intangible Assets by Major Class [Axis] Less: reinsurance recoverable on unpaid claims, beginning of period Reinsurance Recoverable for Unpaid Claims and Claims Adjustments, After Acquisition Reinsurance Recoverable for Unpaid Claims and Claims Adjustments, After Acquisition Low Minimum [Member] Accounts, Notes, Loans and Financing Receivable [Line Items] Accounts, Notes, Loans and Financing Receivable [Line Items] Company Selected Measure Name Company Selected Measure Name U.S. government securities US Government Debt Securities [Member] Net Income Business Combination, Pro Forma Information, Pro Forma Income (Loss), after Tax Fair Value Measurement [Domain] Fair Value Measurement [Domain] Short-term investments and cash Short-term Investments And Cash [Member] Short-term Investments And Cash Notes Payable & Subordinated Debt Debt Disclosure [Text Block] Aggregate Available Trading Arrangement, Securities Aggregate Available Amount Stock Appreciation Rights (SARs) Stock Appreciation Rights (SARs) [Member] Debt instrument, covenant, limitation on additional indebtedness maximum Debt Instrument, Covenant, Limitation On Additional Indebtedness, Maximum with a Debt Balance Debt Instrument, Covenant, Limitation On Additional Indebtedness, Maximum with a Debt Balance Goodwill [Roll Forward] Goodwill [Roll Forward] Commitments and Contingencies Commitments and Contingencies Disclosure [Text Block] Diluted (in shares) Diluted weighted-average common share equivalents (in shares) Weighted Average Number of Shares Outstanding, Diluted Non-GAAP Measure Description Non-GAAP Measure Description [Text Block] Entity Small Business Entity Small Business Business combination, voting equity interest acquired, percentage Business Combination, Voting Equity Interest Acquired, Percentage Income Tax Disclosure [Abstract] Other operating and general expenses Other Cost and Expense, Operating Document Transition Report Document Transition Report Other assets Business Combination, Recognized Asset Acquired, Other Asset, Noncurrent Due after one year through five years Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, after Year One Through Five Gross realized losses Gross Realized Investment Losses [Abstract] Gross Realized Investment Losses Underlying Securities Award Underlying Securities Amount Fixed maturity securities, available-for-sale Debt Securities, Available-for-Sale, Realized Gain Equity Component [Domain] Equity Component [Domain] Document Period End Date Document Period End Date Schedule of Held-to-Maturity, Changes in Allowance for Credit Loss Debt Securities, Held-to-Maturity, Allowance for Credit Loss [Table Text Block] Income Taxes Income Tax Disclosure [Text Block] Proceeds from long term borrowings Proceeds from Lines of Credit UK UNITED KINGDOM Awards Close in Time to MNPI Disclosures, Table Awards Close in Time to MNPI Disclosures [Table Text Block] Mortgage loans, at fair value Total mortgage loans Mortgage Loans on Real Estate, Commercial and Consumer, Net Document Type Document Type Level 3 Fair Value, Inputs, Level 3 [Member] Available for sale, fair value Debt Securities, Available-for-Sale, Unrealized Loss Position [Abstract] Earnings Per Share Earnings Per Share [Text Block] Name Outstanding Recovery, Individual Name Additional paid-in capital Additional Paid in Capital Product and Service [Axis] Product and Service [Axis] Mortgage loans Mortgage Loans [Member] Mortgage Loans Notes payable Notes Payable Total commission and fee revenue Revenue from Contract with Customer, Excluding Assessed Tax Assumed premiums Assumed Premiums Earned Investment Income [Table] Investment Income [Table] Statistical Measurement [Axis] Statistical Measurement [Axis] Additions Finite-Lived Intangible Assets Acquired Line of credit facility, unused capacity, commitment fee percentage Line of Credit Facility, Unused Capacity, Commitment Fee Percentage Fair Value Measurement Inputs and Valuation Techniques [Line Items] Fair Value Measurement Inputs and Valuation Techniques [Line Items] Aggregate Erroneous Compensation Amount Aggregate Erroneous Compensation Amount Net unrealized gains (losses) on investments Net Unrealized Losses and Gains on Investments [Abstract] Net Unrealized Losses and Gains on Investments Peer Group Issuers, Footnote Peer Group Issuers, Footnote [Text Block] Total other comprehensive (loss) income Other comprehensive (loss) income, net of tax Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent Useful life Equity Method Investment, Difference in Net Assets, Amortization Period Equity Method Investment, Difference in Net Assets, Amortization Period Securities held as collateral, at fair value Securities Held as Collateral, at Fair Value Level 1 Fair Value, Inputs, Level 1 [Member] Accounts payable and accrued liabilities Business Combination, Recognized Liability Assumed, Accounts Payable, Current Schedule of Related Party Transactions, by Related Party [Table] Related Party Transaction [Table] Diluted earnings per share (in dollar per share) Earnings Per Share, Diluted Fixed Maturity Securities, Held-to-Maturity Debt Securities, Held-to-Maturity, Allowance for Credit Loss [Roll Forward] Due after five years through ten years Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, after Year 5 Through 10 Recoveries of amounts previously written off Debt Securities, Held-to-Maturity, Excluding Accrued Interest, Allowance for Credit Loss, Recovery Other Loss on Sale of Other Investments Loss on Sale of Other Investments Treasury stock (in shares) Treasury Shares balance at beginning of period (in shares) Shares balance at Ending of period (in shares) Treasury Stock, Common, Shares Consolidation Items [Domain] Consolidation Items [Domain] Investments, Debt and Equity Securities [Abstract] Equity Method Investments and Other Equity Method Investments and Joint Ventures Disclosure [Text Block] Financing Receivable Portfolio Segment [Axis] Financing Receivable Portfolio Segment [Axis] Ceded unearned premium Business Combination, Recognized Asset Acquired, Ceded Unearned Premium Business Combination, Recognized Asset Acquired, Ceded Unearned Premium Specialty Programs Specialty Programs [Member] Specialty Programs Total Total Intangible Assets [Roll Forward] Total Intangible Assets Proceeds from the sales of equity securities Equity securities Proceeds from Sale of Equity Securities, FV-NI Cash paid for income taxes Income Taxes Paid, Net 2028 Finite-Lived Intangible Asset, Expected Amortization, Year Two Apollo Segment Apollo Segment [Member] Apollo Segment Principal Long-Term Debt, Gross Debt Interest Rage Range [Axis] Debt Instrument, Fixed Rate, Period [Axis] Debt Instrument, Fixed Rate, Period Agency fees from syndicates (in percent) Managing Agency Fee Percentage Managing Agency Fee Percentage Trade name Trade Names [Member] Agent Relationships Agent Relationship [Member] Agent Relationship Schedule of Debt Securities, Available-for-Sale, Unrealized Loss Position, Fair Value Debt Securities, Available-for-Sale, Unrealized Loss Position, Fair Value [Table Text Block] Expiration Date Trading Arrangement Expiration Date Sales of and distributions from equity method and other long-term investments Payments for (Proceeds from) Long-Term Investments Equity securities Equity Securities, FV-NI, Unrealized Gain (Loss) Non U.S government securities Debt Security, Government, Non-US [Member] Allowance for credit losses Allowance for Credit Losses Beginning balance Ending balance Debt Securities, Held-to-Maturity, Allowance for Credit Loss, Excluding Accrued Interest Schedule of Carrying Value of Equity Method Investments Equity Method Investments [Table Text Block] Ceded premiums Ceded Premiums Written Compensation Actually Paid vs. Net Income Compensation Actually Paid vs. Net Income [Text Block] Entity Current Reporting Status Entity Current Reporting Status Receivables [Abstract] Awards Close in Time to MNPI Disclosures Awards Close in Time to MNPI Disclosures [Table] Consolidated Entities [Domain] Consolidated Entities [Domain] Due in less than one year Debt Securities, Available-for-Sale, Amortized Cost, Maturity, Allocated and Single Maturity Date, Year One Ceded paid losses and LAE Reinsurance Recoverables on Paid Losses, Gross Agreement, ownership interest Related Party, Ownership Interest Related Party, Ownership Interest Financial Instrument [Axis] Financial Instrument [Axis] Statement of Financial Position [Abstract] Executive Category: Executive Category [Axis] 12 Months or More Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss Proceeds from long term borrowings Proceeds from Issuance of Long-Term Debt Interest expense Interest Expense, Operating and Nonoperating Current Fiscal Year End Date Current Fiscal Year End Date Total Realized Investment Losses Realized Investment Losses Less than 12 Months Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss Debt Interest Rate, After Year 8 Debt Instrument, Fixed Interest Rate, Period Two [Member] Debt Instrument, Fixed Interest Rate, Period Two Finite-Lived Intangible Assets, Major Class Name [Domain] Finite-Lived Intangible Assets, Major Class Name [Domain] Schedule of Accounts, Notes, Loans and Financing Receivable Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block] Professional fees Professional Fees Prior years Liability for Unpaid Claims and Claims Adjustment Expense, Claims Paid, Prior Years Transactional E&S Transactional E&S [Member] Transactional E&S Fixed maturity securities, held-to-maturity: Debt Securities, Available-for-Sale and Held-to-Maturity, Fair Value to Amortized Cost, after Allowance for Credit Loss [Abstract] Equity Awards Adjustments, Excluding Value Reported in Compensation Table Equity Awards Adjustments, Excluding Value Reported in the Compensation Table [Member] Syndicate 1971 Syndicate 1971 [Member] Syndicate 1971 Deposit contracts, assets Deposit Contracts, Assets Total Debt Securities, Available-for-Sale, Unrealized Loss Position, Accumulated Loss Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block] Proceeds from the sales of fixed maturity securities, available-for-sale Proceeds from Sale and Maturity of Marketable Securities Fair value of net assets acquired, excluding goodwill Business Combination, Recognized Asset Acquired to Liability Assumed, Excess (Less) Antidilutive securities (in shares) Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Unrecorded unconditional purchase obligation Unrecorded Unconditional Purchase Obligation Captives Captives [Member] Captives Apollo Group Holdings Limited Apollo Group Holdings Limited [Member] Apollo Group Holdings Limited Net cash provided by financing activities Cash Provided by (Used in) Financing Activity, Including Discontinued Operation Measure: Measure [Axis] Derivatives Derivative, Fair Value, Net Pay vs Performance Disclosure, Table Pay vs Performance [Table Text Block] Forgone Recovery due to Violation of Home Country Law, Amount Forgone Recovery due to Violation of Home Country Law, Amount Dowling Capital Partners LP units Dowling Capital Partners LP [Member] Dowling Capital Partners LP Investment expenses Investment Income, Investment Expense Entity Tax Identification Number Entity Tax Identification Number Without single maturity date Debt Securities, Available-for-Sale, Maturity, without Single Maturity Date, Fair Value Schedule of Assets And Liabilities Schedule of Variable Interest Entities [Table Text Block] Common stock, shares issued (in shares) Common Stock, Shares, Issued Commercial mortgage-backed securities Commercial Mortgage-Backed Securities [Member] Goodwill and Intangible Assets Goodwill and Intangible Assets Disclosure [Text Block] Fixed Maturity Securities, Available-For-Sale Debt Securities, Available-for-Sale, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward] Schedule of Goodwill Schedule of Goodwill [Table Text Block] Trading Arrangement: Trading Arrangement [Axis] Total Shareholder Return Amount Total Shareholder Return Amount Corporate expenses Segment Reporting, Reconciling Item, Corporate Nonsegment [Member] Security Exchange Name Security Exchange Name Allowance for credit losses Reinsurance Recoverable, Allowance for Credit Loss Ceded premiums Ceded Premiums Earned Indefinite-Lived Intangible Assets, Major Class Name [Domain] Indefinite-Lived Intangible Assets, Major Class Name [Domain] Asset Class [Domain] Asset Class [Domain] Mortgage loans uncollectable write-off Mortgage Loans Uncollectable Write-Off Mortgage Loans Uncollectable Write-Off Total losses for the period recognized in net investment gains Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Earnings Statement [Line Items] Statement [Line Items] Rule 10b5-1 Arrangement Adopted Rule 10b5-1 Arrangement Adopted [Flag] Cash and cash equivalents Cash and Cash Equivalent Fair Value Measurement Inputs and Valuation Techniques [Table] Fair Value Measurement Inputs and Valuation Techniques [Table] Common stock: Common Stock [Member] Net increase in cash and cash equivalents and restricted cash Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Period Increase (Decrease), Including Exchange Rate Effect and Discontinued Operation Summary of Significant Accounting Policies Significant Accounting Policies [Text Block] Statistical Measurement [Domain] Statistical Measurement [Domain] Amortized Cost Total Debt Securities, Available-for-Sale, Amortized Cost, Excluding Accrued Interest, before Allowance for Credit Loss Prior years Prior Year Claims and Claims Adjustment Expense Related Party Transaction [Axis] Related Party Transaction [Axis] Gross, beginning balance Intangible Assets, Gross (Excluding Goodwill) Asset Class [Axis] Asset Class [Axis] Cash and Cash Equivalents and Other Assets Cash and Cash Equivalents and Other Assets [Member] Cash and Cash Equivalents and Other Assets Total unrealized losses for the period recognized in accumulated comprehensive (loss) income Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Other Comprehensive Income (Loss) Fixed maturity securities, available-for-sale Fixed Maturity Securities, Available-for-sale [Member] Fixed Maturity Securities, Available-for-sale Reinsurance and premium payables Business Combination, Recognized Liability Assumed, Reinsurance And Premium Payables Business Combination, Recognized Liability Assumed, Reinsurance And Premium Payables Unearned premiums Unearned Premiums Total Debt Securities, Held-to-Maturity, Unrealized Loss Position, Fair Value Issuance of shares (in shares) Skyward Specialty Insurance Group, Inc. common stock issued to existing Apollo common stockholders (in shares) Business Combination, Consideration Transferred, Equity Interest, Share Issued, Number of Shares Gross Unrealized Losses Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Loss, before Tax Trading Arrangements, by Individual Trading Arrangements, by Individual [Table] Fed Funds Effective Rate Overnight Index Swap Rate Fed Funds Effective Rate Overnight Index Swap Rate [Member] Basic earnings per share (in dollar per share) Earnings Per Share, Basic Revolving Credit Facility Revolving Line Of Credit Due December 2025 [Member] Revolving Line Of Credit Due December 2025 Deferred income taxes OCI, Debt Securities, Available-for-Sale, Gain (Loss), before Adjustment, Tax Schedule of Segment Reporting Information, by Segment Schedule of Segment Reporting Information, by Segment [Table Text Block] Indirect loans Investment in indirect loans and loan collateral Indirect Loans and Loan Collateral [Member] Indirect Loans and Loan Collateral Gross Unrealized Gains Debt Securities, Held-to-Maturity, Accumulated Unrecognized Gain Measurement Input Type [Domain] Measurement Input Type [Domain] Affiliated entity Affiliated Entity [Member] Total losses for the period recognized in net investment gains attributable to the change in unrealized gains or losses relating to assets held as of period end Fair Value, Asset, Recurring Basis, Still Held, Unrealized Gain (Loss) Total underwriting revenues Underwriting Income (Loss) Commission and fee income Insurance Commissions and Fees Schedule of Ceded Credit Risk Ceded Credit Risk [Table Text Block] Award Timing MNPI Disclosure Award Timing MNPI Disclosure [Text Block] Proceeds from the sales of (payments for the purchase of) property and equipment Proceeds from Sale of Productive Assets Variable Interest Entity, Primary Beneficiary Variable Interest Entity, Primary Beneficiary [Member] Foreign currency translation adjustment Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Tax Schedule of Accounts, Notes, Loans and Financing Receivable [Table] Accounts and Financing Receivables [Table] Purchase of equity method investments and other long-term investments Payments to Acquire Equity Method Investments Derivative Instruments, Gain (Loss) [Line Items] Derivative Instruments, Gain (Loss) [Line Items] Schedule of Available-for-Sale, Changes in Allowance for Credit Loss Debt Securities, Available-for-Sale, Allowance for Credit Loss [Table Text Block] Hedging Designation [Domain] Hedging Designation [Domain] Underwriting, Acquisition and Insurance Expenses Underwriting, Acquisition and Insurance Expenses [Text Block] Underwriting, Acquisition and Insurance Expenses Goodwill and Intangible Assets Disclosure [Abstract] Total liabilities and stockholders’ equity Liabilities and Equity Foreign Currency Foreign Currency Transactions and Translations Policy [Policy Text Block] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Deferred policy acquisition costs and VOBA Deferred Policy Acquisition Cost Derivative Instruments, Gain (Loss) [Table] Derivative Instruments, Gain (Loss) [Table] Numerator Preferred Stock Dividends and Other Adjustments [Abstract] Schedule of Equity Method Investments [Table] Equity Method Investment [Table] Accounting Policies [Abstract] Treasury stock: Treasury Stock, Common [Member] Pay vs Performance Disclosure [Line Items] Mortgage Loans Mortgage Receivable [Member] Effects of Reinsurance [Table] Effects of Reinsurance [Table] Liabilities: Liabilities [Abstract] Acquisitions Business Combination [Text Block] Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] Difference Equity Method Investment, Difference Between Carrying Amount and Underlying Equity Variable Interest Entity [Table] Variable Interest Entity [Table] Statement of Cash Flows [Abstract] Company Selected Measure Amount Company Selected Measure Amount Comprehensive income Comprehensive Income (Loss), Net of Tax, Attributable to Parent Measurement Input Type [Axis] Measurement Input Type [Axis] Name Measure Name Managing agents fees Managing Agents Fees [Member] Managing Agents Fees Due in less than one year Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, Year One Issuances Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Issuances Maturities, calls, transfers and paydowns of fixed maturity securities, available-for-sale Proceeds from Maturities, Prepayments and Calls of Debt Securities, Available-for-Sale Finite-Lived Finite-Lived Intangible Assets [Roll Forward] Deferred tax liabilities Deferred Income Tax Liabilities, Net Professional Lines Professional Lines [Member] Professional Lines Assumed premiums Assumed Premiums Written SUA fee income Managing General Insurance Agent And Broker, Fee Icome [Member] Managing General Insurance Agent And Broker, Fee Icome Unsecured Debt Unsecured Debt [Member] 12 Months or More Debt Securities, Available-for-Sale And Held-to-Maturity, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss Debt Securities, Available-for-Sale And Held-to-Maturity, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss Total assets Assets 2027 Estimated Annual Amortization Expense Finite-Lived Intangible Asset, Expected Amortization, Year One Cash flows from operating activities: Cash Provided by (Used in) Operating Activity, Including Discontinued Operation [Abstract] Estimated average useful life (in years) Acquired Finite-Lived Intangible Assets, Weighted Average Useful Life Variable Interest Entity [Line Items] Variable Interest Entity [Line Items] 2030 Finite-Lived Intangible Asset, Expected Amortization, Year Four Fair Value Total fixed maturity securities, held-to-maturity Debt Securities, Held-to-Maturity, Fair Value Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Debt Securities, Available-for-Sale [Line Items] Debt Securities, Available-for-Sale [Line Items] Total assets acquired, excluding goodwill Business Combination, Recognized Asset Acquired, Asset Ceded unearned premium Ceded unearned premium Prepaid Reinsurance Premiums Level 2 Fair Value, Inputs, Level 2 [Member] Other Other Sectors [Member] Other Sectors Equity method investments Carrying Value Recorded investment balance Equity Method Investments Insider Trading Policies and Procedures Not Adopted Insider Trading Policies and Procedures Not Adopted [Text Block] Business Combination [Domain] Business Combination [Domain] Deferred ceding commission Deferred Ceding Commission Deferred Ceding Commission Related Party Related Party [Member] Equity method investments Equity Method Investments [Member] Schedule of Components of Income Tax Expense Schedule of Components of Income Tax Expense (Benefit) [Table Text Block] PEO PEO [Member] Schedule of Investments Classified by Contractual Maturity Date Investments Classified by Contractual Maturity Date [Table Text Block] Retained earnings: Retained Earnings [Member] Total paid Liability for Unpaid Claims and Claims Adjustment Expense, Claims Paid Income Tax Jurisdiction [Axis] Income Tax Jurisdiction [Axis] Cash and cash equivalents and restricted cash at beginning of period Cash and cash equivalents and restricted cash at end of period Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation Income Statement [Abstract] 12 Months or More Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, 12 Months or Longer Investments, fair value disclosure Investments, Fair Value Disclosure Gross intangible assets, ending balance Intangible Assets, Net (Excluding Goodwill) Product and Service [Domain] Product and Service [Domain] Net investment income Net investment income Net Investment Income Restatement does not require Recovery Restatement Does Not Require Recovery [Text Block] Business Combination [Table] Business Combination [Table] Gross realized gains Gross Realized Investment Gains [Abstract] Gross Realized Investment Gains Equity securities Equity Securities, FV-NI, Realized Loss Schedule of Preliminary Purchase Price Allocation Business Combination, Recognized Asset Acquired and Liability Assumed [Table Text Block] City Area Code City Area Code Award Timing, How MNPI Considered Award Timing, How MNPI Considered [Text Block] Loans receivable Loans Receivable, Measurement Input Loans Receivable, Measurement Input Total incurred, net of reinsurance Liability For Unpaid Claims And Claims Adjustment Expense, Incurred Claims, Net Liability For Unpaid Claims And Claims Adjustment Expense, Incurred Claims, Net Corporate expenses General and Administrative Expense Cash flows from investing activities: Cash Provided by (Used in) Investing Activity, Including Discontinued Operation [Abstract] Pay vs Performance Disclosure Pay vs Performance Disclosure [Table] Fair Value Hedging Fair Value Hedging [Member] Related Party Transactions [Abstract] Effective Income Tax Rate Reconciliation [Line Items] Effective Income Tax Rate Reconciliation [Line Items] Goodwill, net balance Goodwill Goodwill Equity securities, at fair value Total equity securities Equity Securities, FV-NI Current period Liability for Unpaid Claims and Claims Adjustment Expense, Claims Paid, Current Year Net investment gains Net investment gains Net investment gains Gain (Loss) on Investments Supplemental disclosure of cash flow information: Supplemental Cash Flow Information [Abstract] Premiums receivable, net Business Combination, Recognized Asset Acquired, Receivable, Current Accumulated impairment Goodwill, Impaired, Accumulated Impairment Loss Other Performance Measure, Amount Other Performance Measure, Amount Fair Value Fair Value Measurement, Policy [Policy Text Block] Related Party [Domain] Related and Nonrelated Parties [Domain] Brewer Lane Ventures Fund II LP units Brewer Lane Ventures Fund II, L.P. [Member] Brewer Lane Ventures Fund II, L.P. Weighted-average common shares outstanding Earnings Per Share Reconciliation [Abstract] Skyward Specialty Segment Skyward Specialty Segment [Member] Skyward Specialty Segment Investments: Investments [Abstract] Net cash used in investment activities Cash Provided by (Used in) Investing Activity, Including Discontinued Operation Total investment income Gross Investment Income (Expense), Operating Gross Investment Income (Expense), Operating Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table [Member] Underwriting income Underwriting Income, Net Underwriting Income, Net Cash paid for interest Interest Paid, Excluding Capitalized Interest, Operating Activity Document Fiscal Year Focus Document Fiscal Year Focus Schedule of Effects of Reinsurance Effects of Reinsurance [Table Text Block] Basis of Presentation Basis of Accounting, Policy [Policy Text Block] Effective tax rate Effective Income Tax Rate Reconciliation, Percent Equity Method Investment, Nonconsolidated Investee [Axis] Equity Method Investment, Nonconsolidated Investee [Axis] Underwriting, acquisition and insurance expenses Total underwriting, acquisition and insurance expenses Deferred Policy Acquisition Costs, Amortization Expense And Other Cost And Expense, Operating Deferred Policy Acquisition Costs, Amortization Expense And Other Cost And Expense, Operating Carrying Value Reported Value Measurement [Member] Stockholders’ equity Equity [Abstract] Total Realized Investment Gains Realized Investment Gains Investment in direct and indirect loans Proceeds From (Payments To Acquire) Equity Method Investments Proceeds From (Payments To Acquire) Equity Method Investments Earned Premiums Earned, Net [Abstract] Segments Segment Reporting Disclosure [Text Block] Cover holder relationships Cover Holder Relationships [Member] Cover Holder Relationships Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] 12 Months or More Debt Securities, Available-for-Sale And Held-to-Maturity, Continuous Unrealized Loss Position, 12 Months or Longer Debt Securities, Available-for-Sale And Held-to-Maturity, Continuous Unrealized Loss Position, 12 Months or Longer Trademarks Trademarks [Member] Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] Available for sale, gross unrealized losses Debt Securities, Available-for-Sale, Unrealized Loss Position, Accumulated Loss [Abstract] Finite-Lived Intangible Assets [Line Items] Finite-Lived Intangible Assets [Line Items] Compensation Actually Paid vs. Total Shareholder Return Compensation Actually Paid vs. Total Shareholder Return [Text Block] Fair Value, Recurring and Nonrecurring [Table] Fair Value, Recurring and Nonrecurring [Table] Weighted average Weighted Average [Member] Amortization Amortization of intangible assets Amortization of Intangible Assets RISCOM RISCOM [Member] RISCOM Deferred tax assets Deferred Income Tax Assets, Net Schedule of Accumulated Other Comprehensive Income (Loss) Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] Proceeds from the sales of (payments for the purchase of) property and equipment Payments to Acquire Productive Assets Credit Spread Adjustment Credit Spread Adjustment [Member] Credit Spread Adjustment Less than 12 Months Debt Securities, Available-for-Sale And Held-to-Maturity, Continuous Unrealized Loss Position, Less than 12 Months Debt Securities, Available-for-Sale And Held-to-Maturity, Continuous Unrealized Loss Position, Less than 12 Months Profit commission (in percent) Profit Commission Percentage Profit Commission Percentage Residential mortgage-backed securities Residential Mortgage-Backed Securities [Member] Funds held for others Funds Held under Reinsurance Agreements, Liability Revolving Credit Facility [Member] Revolving Credit Facility [Member] Direct premiums Direct Premiums Written Arrangement Duration Trading Arrangement Duration Schedule of Debt Securities, Trading, and Equity Securities, FV-NI Debt Securities, Trading, and Equity Securities, FV-NI [Table Text Block] Held-to-maturity, fair value Debt Securities, Held-to-Maturity, Continuous Unrealized Loss Position [Abstract] Segments [Axis] Segments [Axis] Local Phone Number Local Phone Number Additional 402(v) Disclosure Additional 402(v) Disclosure [Text Block] SUA commission revenue Managing General Insurance Agent And Broker, Commission Revenue [Member] Managing General Insurance Agent And Broker, Commission Revenue Global Property Global and Property [Member] Global and Property Intangible assets, excluding goodwill, net Total Business Combination, Recognized Asset Acquired, Identifiable Intangible Asset, Excluding Goodwill Cash and cash equivalents Business Combination, Recognized Asset Acquired, Cash and Cash Equivalent Assets Assets [Abstract] Credit Facility [Axis] Credit Facility [Axis] Mortgage loans not producing income Number Of Mortgage Loans Not Producing Income Number Of Mortgage Loans Not Producing Income Underlying Security Market Price Change Underlying Security Market Price Change, Percent Debt Instrument [Axis] Debt Instrument [Axis] Fair Value Measurements Fair Value Disclosures [Text Block] Business Combination [Line Items] Business Combination [Line Items] Credit Facility [Domain] Credit Facility [Domain] Treasury stock acquired Treasury Stock, Value, Acquired, Cost Method Commissions Insurance Commissions Stated interest rate Debt Instrument, Interest Rate, Stated Percentage Investment, Name [Axis] Investment, Name [Axis] Fixed maturity securities, available-for-sale: Debt Securities, Available-for-Sale, Fair Value to Amortized Cost, after Allowance for Credit Loss [Abstract] Other long-term investments Other Long-Term Investments Derivative assets, fair value Derivative Asset, Subject to Master Netting Arrangement, before Offset Entity Registrant Name Entity Registrant Name Percentage of property appraisal value Mortgage Loans on Real Estate, Principal Amount, Percentage of Property Appraisal Value Mortgage Loans on Real Estate, Principal Amount, Percentage of Property Appraisal Value Stock Price or TSR Estimation Method Stock Price or TSR Estimation Method [Text Block] Municipal securities Municipal Bonds [Member] Syndicate 1971 Syndicate 1971 - Digital Economy [Member] Syndicate 1971 - Digital Economy Total Assets, Fair Value Disclosure Number of securities Debt Securities, Available-for-Sale, Unrealized Loss Position, Number of Positions JVM Funds LLC JVM Funds LLC [Member] JVM Funds LLC Number of operating segments Number of Operating Segments Debt instrument, interest rate floor Debt Instrument, Interest Rate Floor Debt Instrument, Interest Rate Floor Purchase of equity securities Payments to Acquire Equity Securities, FV-NI Related Party [Axis] Related and Nonrelated Parties [Axis] Corporate Nonsegment Segment Reporting, Reconciling Item, Excluding Corporate Nonsegment [Member] Less than 12 Months Debt Securities, Held-to-Maturity, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value Restatement Determination Date: Restatement Determination Date [Axis] Issuance of common stock Shares Issued, Value, Share-Based Payment Arrangement, after Forfeiture Credit & Surety Credit & Surety Credit And Surety [Member] Credit And Surety Reporting Unit [Axis] Reporting Unit [Axis] Liabilities assumed Business Combination, Recognized Liability Assumed, Liability [Abstract] Name Trading Arrangement, Individual Name Face amount Debt Instrument, Face Amount Less than 12 Months Debt Securities, Available-for-Sale And Held-to-Maturity, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss Debt Securities, Available-for-Sale And Held-to-Maturity, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss Consideration of Skyward Specialty Insurance Group, Inc. issued common stock Business Combination, Consideration Transferred, Equity Interest Preferred stocks Preferred Stock [Member] Accident and Health Accident and Health [Member] Accident and Health Name Awards Close in Time to MNPI Disclosures, Individual Name Aggregate Erroneous Compensation Not Yet Determined Aggregate Erroneous Compensation Not Yet Determined [Text Block] FHLB Loan Term Loan Due August 2029 [Member] Term Loan Due August 2029 Mortgage loans Mortgage Loans, Unrealized Gain (Loss) Mortgage Loans, Unrealized Gain (Loss) Partner Syndicates Platform Partner Syndicates [Member] Platform Partner Syndicates Treasury stock, at cost, 185,022 and 0 shares, respectively Treasury Stock, Value Foreign Tax Jurisdiction Foreign Tax Jurisdiction [Member] Segments [Domain] Segments [Domain] Managed Syndicates Managed Syndicates [Member] Managed Syndicates Fixed Maturity Securities, Available-For-Sale Fixed Maturities [Member] Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV [Domain] Retail Retail Portfolio Segment [Member] Retail Portfolio Segment Arena Special Opportunities Fund, LP units Arena Special Opportunities Fund, LP [Member] Arena Special Opportunities Fund, LP Purchase of fixed maturity securities, available-for-sale Payments to Acquire Debt Securities, Available-for-Sale Subordinated debt, net of debt issuance costs Subordinated Debt Proceeds from issuance of common stock Proceeds from Stock Plans Total liabilities assumed Business Combination, Recognized Liability Assumed, Liability Subordinated debt, net of debt issuance costs Subordinated Debt [Member] All Executive Categories All Executive Categories [Member] Current period Current Year Claims and Claims Adjustment Expense Amortization of policy acquisition costs Deferred Policy Acquisition Costs, Amortization Expense Common stock, $0.01 par value, 500,000,000 shares authorized, 44,728,087 shares issued and 44,543,065 shares outstanding at March 31, 2026; 40,511,222 shares issued and outstanding at December 31, 2025 Common Stock, Value, Issued Net earned premiums Net premiums Net earned premium Premiums Earned, Net Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table] Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table] Variable Interest Entity [Abstract] Variable Interest Entity [Abstract] Variable Interest Entity Brewer Lane Ventures Fund II LP Brewer Lane Venture Fund II LP [Member] Brewer Lane Venture Fund II LP Estimated fair value, finite-lived Business Combination, Recognized Asset Acquired, Identifiable Intangible Asset, Finite-Lived Fair Value Measured at Net Asset Value Per Share Fair Value Measured at Net Asset Value Per Share [Member] Business Combination [Axis] Business Combination [Axis] Schedule of Investment Income Investment Income [Table Text Block] Ownership % Equity Method Investment, Ownership Percentage Mortgage loans in foreclosure Mortgage Loans in Process of Foreclosure, Amount Short-term investments Short-Term Investments [Member] Ceded losses and LAE incurred Policyholder Benefits and Claims Incurred, Ceded PEO Actually Paid Compensation Amount PEO Actually Paid Compensation Amount Debt term Long-Term Debt, Term Due after ten years Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, after Year 10 Revenue from Contract with Customer [Abstract] Hedging Designation [Axis] Hedging Designation [Axis] Deferred income taxes Business Combination, Recognized Liability Assumed, Deferred Tax Liability Term Loan Facility, net of debt issuance costs Term Loan Facility [Member] Term Loan Facility Losses and Loss Adjustment Expenses Liability for Future Policy Benefits and Unpaid Claims Disclosure [Text Block] Notes payable Notes Payable [Member] Notes Payable Fixed maturity securities, available-for-sale Debt Securities, Available-for-Sale, Realized Loss All Individuals All Individuals [Member] Long-Term Debt, Type [Domain] Long-Term Debt, Type [Domain] Fair Value Disclosures [Abstract] Name Forgone Recovery, Individual Name Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested [Member] Short-term investments, at fair value Other Short-Term Investments Schedule of Derivative Instruments Schedule of Derivative Instruments [Table Text Block] Erroneous Compensation Analysis Erroneous Compensation Analysis [Text Block] Intangible Asset, Finite-Lived [Table] Intangible Asset, Finite-Lived [Table] Additions Indefinite-Lived Intangible Assets Acquired Total Debt Securities, Held-to-Maturity, Unrealized Loss Position, Accumulated Loss Additions Intangible Assets Acquired Intangible Assets Acquired Net change in unrealized (losses) gains on investments, net of tax OCI, Debt Securities, Available-for-Sale, Gain (Loss), before Adjustment, after Tax Commercial Commercial Portfolio Segment [Member] Rule 10b5-1 Arrangement Terminated Rule 10b5-1 Arrangement Terminated [Flag] Reserves for losses and LAE, beginning of period Liability for Claims and Claims Adjustment Expense, After Acquisition Liability for Claims and Claims Adjustment Expense, After Acquisition Total Revenue Business Combination, Pro Forma Information, Pro Forma Revenue Indefinite-Lived Indefinite-Lived Intangible Assets [Roll Forward] Erroneously Awarded Compensation Recovery Erroneously Awarded Compensation Recovery [Table] Title of 12(b) Security Title of 12(b) Security Funds at Lloyd's Restricted Assets, Lloyd's Funds Held Restricted Assets, Lloyd's Funds Held Per share data: Earnings Per Share [Abstract] Paid, net of reinsurance, related to: Liability for Unpaid Claims and Claims Adjustment Expense, Claims Paid [Abstract] Non-competes Non-Competes [Member] Non-Competes Professional fees and reimbursements Professional Fees And Reimbursements [Member] Professional Fees And Reimbursements Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block] Pre-tax gain (loss) adjustment expenses Gain (Loss) on Fair Value Hedges Recognized in Earnings Tranche B DDTL Tranche B DDTL [Member] Tranche B DDTL Number of underwriting divisions Number of Underwriting Divisions Number of Underwriting Divisions Held-to-maturity, gross unrealized losses Debt Securities, Held-to-Maturity, Continuous Unrealized Loss Position, Accumulated Loss [Abstract] Debt Securities, Held-to-Maturity, Continuous Unrealized Loss Position, Accumulated Loss Denominator Weighted Average Number of Shares Outstanding, Diluted, Adjustment [Abstract] Amortization expense Amortization expense Amortization of Deferred Charges Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] Shares acquired (in shares) Treasury Stock, Shares, Acquired Award Timing Disclosures [Line Items] Debt Interest Rage Range [Domain] Debt Instrument, Fixed Rate, Period [Domain] Debt Instrument, Fixed Rate, Period [Domain] Schedule of Gain (Loss) on Securities Gain (Loss) on Securities [Table Text Block] Federal Home Loan Bank Advances Federal Home Loan Bank Advances [Member] Reserves for losses and LAE, beginning of period, net of reinsurance Net reserves for losses and LAE, end of period Liability for Unpaid Claims and Claims Adjustment Expense, Net Strategic partner syndicates Strategic Partner Syndicates [Member] Strategic Partner Syndicates Funds held for others Business Combination, Recognized Liability Assumed, Funds Held Under Reinsurance Agreements, Liability Business Combination, Recognized Liability Assumed, Funds Held Under Reinsurance Agreements, Liability Aligned Syndicates Aligned Syndicates [Member] Aligned Syndicates Schedule of Underwriting, Acquisition and Insurance Expenses Schedule Of Underwriting, Acquisition and Insurance Expenses [Table Text Block] Schedule Of Underwriting, Acquisition and Insurance Expenses Reinsurance Reinsurance [Text Block] Net income Net income Net income Net Income (Loss) Attributable to Parent Equity Method Investment, Nonconsolidated Investee [Domain] Equity Method Investment, Nonconsolidated Investee [Domain] Available-for-sale and held-to-maturity, gross unrealized losses Debt Securities, Available-for-Sale And Held-to-Maturity, Unrealized Loss Position, Accumulated Loss [Abstract] Debt Securities, Available-for-Sale And Held-to-Maturity, Unrealized Loss Position, Accumulated Loss Accident & Health Accident & Health [Member] Accident & Health SPA1925 SPA1925 [Member] SPA1925 Tranche A DDTL Tranche A DDTL [Member] Tranche A DDTL Segment Reporting Information [Line Items] Segment Reporting Information [Line Items] Equity method investments, unfunded commitment Equity Method Investments, Unfunded Commitment Equity Method Investments, Unfunded Commitment Treasury stock acquired Payments for Repurchase of Common Stock Adoption Date Trading Arrangement Adoption Date Proceeds from Loans Proceeds from Loans Base Rate Base Rate [Member] Reclassifications Reclassification, Comparability Adjustment [Policy Text Block] Shares issued, price per share (in dollar per share) Skyward Specialty Insurance Group, Inc. closing stock price on December 31, 2025 (in shares) Shares Issued, Price Per Share Contract asset after allowance for credit loss Contract with Customer, Asset, after Allowance for Credit Loss Line of Credit Line of Credit [Member] Retained earnings Retained Earnings (Accumulated Deficit) Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested [Member] Aggregate Grant Date Fair Value of Equity Award Amounts Reported in Summary Compensation Table Aggregate Grant Date Fair Value of Equity Award Amounts Reported in Summary Compensation Table [Member] Statement [Table] Statement [Table] Short-term investments, at fair value Business Combination, Recognized Asset Acquired, Investment in Debt and Equity Securities, Current Syndicate 1969 Syndicate 1969 - Lloyd’s Specialist Syndicate [Member] Syndicate 1969 - Lloyd’s Specialist Syndicate Schedule of Fair Value of Consideration Transferred Business Combination [Table Text Block] Cash flows from financing activities: Cash Provided by (Used in) Financing Activity, Including Discontinued Operation [Abstract] Business Combination, Recognized Asset Acquired to Liability Assumed, Excess (Less), and Goodwill Business Combination, Recognized Asset Acquired to Liability Assumed, Excess (Less), and Goodwill Variable Rate [Domain] Variable Rate [Domain] Amortized Cost Debt Securities, Available-for-Sale, Amortized Cost, Fiscal Year Maturity [Abstract] Schedule of Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block] All Adjustments to Compensation All Adjustments to Compensation [Member] Underlying equity Equity Method Investment, Underlying Equity in Net Assets Amendment Flag Amendment Flag Fair Value Debt Securities, Available-for-Sale, Fair Value, Fiscal Year Maturity [Abstract] Reserves for losses and loss adjustment expenses Reserves for losses and LAE, beginning of period Reserves for losses and LAE, end of period Liability for Claims and Claims Adjustment Expense Termination Date Trading Arrangement Termination Date Insider Trading Policies and Procedures Adopted Insider Trading Policies and Procedures Adopted [Flag] Estimated fair value, indefinite-lived Business Combination, Recognized Asset Acquired, Identifiable Intangible Asset, Indefinite-Lived Basic (in shares) Basic weighted-average common shares (in shares) Weighted Average Number of Shares Outstanding, Basic Schedule of Earnings Per Share, Basic and Diluted Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Related Party Transaction [Domain] Related Party Transaction [Domain] Segment Reporting [Abstract] Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract] Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract] Debt Disclosure [Abstract] Expenses: Costs and Expenses [Abstract] Number of securities, allowance for credit loss Debt Securities, Available-for-Sale, Allowance for Credit Loss, Number of Positions Debt Securities, Available-for-Sale, Allowance for Credit Loss, Number of Positions Forgone Recovery due to Expense of Enforcement, Amount Forgone Recovery due to Expense of Enforcement, Amount Consolidated Entities [Axis] Consolidated Entities [Axis] Common stock, par value (in dollar per share) Common Stock, Par or Stated Value Per Share Recoveries of amounts previously written off Debt Securities, Available-for-Sale, Excluding Accrued Interest, Allowance for Credit Loss, Recovery Use of Estimates Use of Estimates, Policy [Policy Text Block] Reinsurance recoverables, net Business Combination, Recognized Asset Acquired, Reinsurance Recoverable, Net Business Combination, Recognized Asset Acquired, Reinsurance Recoverable, Net Settlements Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Settlements Insider Trading Arrangements [Line Items] Equity securities Equity Securities [Member] Available-for-sale allowance for credit losses Allowance for Credit Losses Beginning balance Ending balance Debt Securities, Available-for-Sale, Allowance for Credit Loss, Excluding Accrued Interest Total liabilities Liabilities Antidilutive Securities, Name [Domain] Antidilutive Securities, Name [Domain] Line of credit facility, commitment fee percentage Line of Credit Facility, Commitment Fee Percentage Deferred policy acquisition costs and VOBA Business Combination, Recognized Asset Acquired, Deferred Policy Acquisition Costs and VOBA Business Combination, Recognized Asset Acquired, Deferred Policy Acquisition Costs and VOBA Pension Adjustments Prior Service Cost Pension Adjustments Prior Service Cost [Member] Material Terms of Trading Arrangement Material Terms of Trading Arrangement [Text Block] Fee‑based service expenses Fee‑based Service Expenses Fee‑based Service Expenses Syndicate 1969 Syndicate 1969 [Member] Syndicate 1969 Syndicate 1969 capacity - with fees Syndicate 1969 Capacity [Member] Syndicate 1969 Capacity Fixed maturity securities, held-to-maturity Fixed Maturity Securities, Held-to-Maturity [Member] Fixed Maturity Securities, Held-to-Maturity Other Other Security Investments [Member] Liability for Unpaid Claims and Claims Adjustment Expense [Roll Forward] Liability for Unpaid Claims and Claims Adjustment Expense [Roll Forward] Other asset-backed securities Asset-Backed Securities [Member] Schedule of Identifiable Intangible Assets Business Combination, Intangible Asset, Acquired, Finite-Lived and Indefinite-Lived [Table Text Block] Consolidation Items [Axis] Consolidation Items [Axis] Variable Rate [Axis] Variable Rate [Axis] Counterparty Name [Axis] Counterparty Name [Axis] Maturities, calls and paydowns of fixed maturity securities held-to-maturity Proceeds from Maturities, Prepayments and Calls of Held-to-Maturity Securities Fixed maturity securities, held-to-maturity, at amortized cost (net of allowance for credit losses of $301 and $468, respectively) Debt Securities, Held-to-Maturity, Excluding Accrued Interest, after Allowance for Credit Loss Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Non-NEOs Non-NEOs [Member] Corporate securities and miscellaneous Corporate Debt Securities [Member]