0000001 - Document - Cover Page link:presentationLink link:calculationLink link:definitionLink 9952151 - Statement - Condensed Consolidated Balance Sheets (unaudited) link:presentationLink link:calculationLink link:definitionLink 9952152 - Statement - Condensed Consolidated Balance Sheets (unaudited) (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 9952153 - Statement - Condensed Consolidated Statements of Operations (unaudited) link:presentationLink link:calculationLink link:definitionLink 9952154 - Statement - Condensed Consolidated Statements of Operations (unaudited) (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 9952155 - Statement - Condensed Consolidated Statements of Comprehensive Income (unaudited) link:presentationLink link:calculationLink link:definitionLink 9952156 - Statement - Condensed Consolidated Statements of Equity (unaudited) link:presentationLink link:calculationLink link:definitionLink 9952157 - Statement - Condensed Consolidated Statements of Equity (unaudited) (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 9952158 - Statement - Condensed Consolidated Statements of Cash Flows (unaudited) link:presentationLink link:calculationLink link:definitionLink 9952159 - Statement - Condensed Consolidated Statements of Cash Flows (unaudited) (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 9952160 - Disclosure - Nature of business and basis of presentation link:presentationLink link:calculationLink link:definitionLink 9952161 - Disclosure - Summary of significant accounting policies link:presentationLink link:calculationLink link:definitionLink 9952162 - Disclosure - Segment information link:presentationLink link:calculationLink link:definitionLink 9952163 - Disclosure - Investments link:presentationLink link:calculationLink link:definitionLink 9952164 - Disclosure - Fair value measurements link:presentationLink link:calculationLink link:definitionLink 9952165 - Disclosure - Unpaid losses and loss adjustment expenses link:presentationLink link:calculationLink link:definitionLink 9952166 - Disclosure - Reinsurance link:presentationLink link:calculationLink link:definitionLink 9952167 - Disclosure - Deferred acquisition costs and deferred ceding commissions link:presentationLink link:calculationLink link:definitionLink 9952168 - Disclosure - Debt link:presentationLink link:calculationLink link:definitionLink 9952169 - Disclosure - Equity link:presentationLink link:calculationLink link:definitionLink 9952170 - Disclosure - Share-based compensation link:presentationLink link:calculationLink link:definitionLink 9952171 - Disclosure - Earnings per share link:presentationLink link:calculationLink link:definitionLink 9952172 - Disclosure - Income taxes link:presentationLink link:calculationLink link:definitionLink 9952173 - Disclosure - Other assets link:presentationLink link:calculationLink link:definitionLink 9952174 - Disclosure - Accounts payable and other liabilities link:presentationLink link:calculationLink link:definitionLink 9952175 - Disclosure - Related party transactions link:presentationLink link:calculationLink link:definitionLink 9952176 - Disclosure - Commitments and contingencies link:presentationLink link:calculationLink link:definitionLink 9952177 - Disclosure - Subsequent events link:presentationLink link:calculationLink link:definitionLink 9955511 - Disclosure - Summary of significant accounting policies (Policies) link:presentationLink link:calculationLink link:definitionLink 9955512 - Disclosure - Segment information (Tables) link:presentationLink link:calculationLink link:definitionLink 9955513 - Disclosure - Investments (Tables) link:presentationLink link:calculationLink link:definitionLink 9955514 - Disclosure - Fair value measurements (Tables) link:presentationLink link:calculationLink link:definitionLink 9955515 - Disclosure - Unpaid losses and loss adjustment expenses (Tables) link:presentationLink link:calculationLink link:definitionLink 9955516 - Disclosure - Reinsurance (Tables) link:presentationLink link:calculationLink link:definitionLink 9955517 - Disclosure - Deferred acquisition costs and deferred ceding commissions (Tables) link:presentationLink link:calculationLink link:definitionLink 9955518 - Disclosure - Debt (Tables) link:presentationLink link:calculationLink link:definitionLink 9955519 - Disclosure - Equity (Tables) link:presentationLink link:calculationLink link:definitionLink 9955520 - Disclosure - Share-based compensation (Tables) link:presentationLink link:calculationLink link:definitionLink 9955521 - Disclosure - Earnings per share (Tables) link:presentationLink link:calculationLink link:definitionLink 9955522 - Disclosure - Income taxes (Tables) link:presentationLink link:calculationLink link:definitionLink 9955523 - Disclosure - Other assets (Tables) link:presentationLink link:calculationLink link:definitionLink 9955524 - Disclosure - Accounts payable and other liabilities (Tables) link:presentationLink link:calculationLink link:definitionLink 9955525 - Disclosure - Nature of business and basis of presentation (Details) link:presentationLink link:calculationLink link:definitionLink 9955526 - Disclosure - Segment information - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955527 - Disclosure - Segment information - Schedule of Segment Reporting Information (Details) link:presentationLink link:calculationLink link:definitionLink 9955528 - Disclosure - Segment information - Schedule of Assets by Segment (Details) link:presentationLink link:calculationLink link:definitionLink 9955529 - Disclosure - Segment information - Schedule of Revenues by Geography (Details) link:presentationLink link:calculationLink link:definitionLink 9955530 - Disclosure - Investments - Schedule of Unrealized Gains and Losses on Available for Sale Fixed Maturity and Short-Term Investments, at Fair Value (Details) link:presentationLink link:calculationLink link:definitionLink 9955531 - Disclosure - Investments - Schedule of Continuous Loss Position (Details) link:presentationLink link:calculationLink link:definitionLink 9955532 - Disclosure - Investments - Schedule of Fixed-maturity Securities Classified by Contractual Maturity Securities Date (Details) link:presentationLink link:calculationLink link:definitionLink 9955533 - Disclosure - Investments - Schedule of Equity Method Investments (Details) link:presentationLink link:calculationLink link:definitionLink 9955534 - Disclosure - Investments - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955535 - Disclosure - Investments - Schedule of Carrying Value of Our Other Investments Portfolio (Details) link:presentationLink link:calculationLink link:definitionLink 9955536 - Disclosure - Investments - Schedule of Investment Income and Expenses (Details) link:presentationLink link:calculationLink link:definitionLink 9955537 - Disclosure - Investments - Schedule of Net Realized and Unrealized Gains on Investments (Details) link:presentationLink link:calculationLink link:definitionLink 9955538 - Disclosure - Investments - Schedule of Deposits for Regulatory and Other Purposes (Details) link:presentationLink link:calculationLink link:definitionLink 9955539 - Disclosure - Investments - Schedule of Collateralized Obligations (Details) link:presentationLink link:calculationLink link:definitionLink 9955540 - Disclosure - Fair value measurements - Schedule of Financial Assets and Liabilities Measured at Fair Value on Recurring Basis by Level (Details) link:presentationLink link:calculationLink link:definitionLink 9955541 - Disclosure - Fair value measurements - Schedule of Assets Measured at Fair Value on Non-Recurring Basis (Details) link:presentationLink link:calculationLink link:definitionLink 9955542 - Disclosure - Unpaid losses and loss adjustment expenses - Schedule of Unpaid Losses and Loss Adjustment Expenses (LAE) (Details) link:presentationLink link:calculationLink link:definitionLink 9955543 - Disclosure - Reinsurance - Schedule of Reinsurance on Earned Premiums and Loss and Loss Adjustment Expenses (Details) link:presentationLink link:calculationLink link:definitionLink 9955544 - Disclosure - Reinsurance - Schedule of Reinsurance Recoverable (Details) link:presentationLink link:calculationLink link:definitionLink 9955545 - Disclosure - Reinsurance - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955546 - Disclosure - Deferred acquisition costs and deferred ceding commissions - Schedule of Acquisition Costs Deferred and Amortized for Insurance Business Retained by Accelerant (Details) link:presentationLink link:calculationLink link:definitionLink 9955547 - Disclosure - Deferred acquisition costs and deferred ceding commissions - Schedule of Ceding Commissions Deferred and Amortized (Details) link:presentationLink link:calculationLink link:definitionLink 9955548 - Disclosure - Deferred acquisition costs and deferred ceding commissions - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955549 - Disclosure - Debt - Schedule of Debt Outstanding (Details) link:presentationLink link:calculationLink link:definitionLink 9955550 - Disclosure - Debt - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955551 - Disclosure - Equity - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955552 - Disclosure - Equity - Schedule of Common Stock Issued and Outstanding Roll Forward (Details) link:presentationLink link:calculationLink link:definitionLink 9955553 - Disclosure - Share-based compensation - Summary of Share-based Compensation (Details) link:presentationLink link:calculationLink link:definitionLink 9955554 - Disclosure - Share-based compensation - Schedule of the Activity Related to Share Option Awards (Details) link:presentationLink link:calculationLink link:definitionLink 9955555 - Disclosure - Share-based compensation - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955556 - Disclosure - Share-based compensation - Schedule of Unvested RSUs (Details) link:presentationLink link:calculationLink link:definitionLink 9955557 - Disclosure - Earnings per share (Details) link:presentationLink link:calculationLink link:definitionLink 9955558 - Disclosure - Income taxes - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955559 - Disclosure - Income taxes - Schedule of Composition of Effective Tax Rates (Details) link:presentationLink link:calculationLink link:definitionLink 9955560 - Disclosure - Other assets (Details) link:presentationLink link:calculationLink link:definitionLink 9955561 - Disclosure - Accounts payable and other liabilities (Details) link:presentationLink link:calculationLink link:definitionLink 9955562 - Disclosure - Related party transactions (Details) link:presentationLink link:calculationLink link:definitionLink 9955563 - Disclosure - Commitments and contingencies (Details) link:presentationLink link:calculationLink link:definitionLink 9955564 - Disclosure - Subsequent events (Details) link:presentationLink link:calculationLink link:definitionLink