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 Comprehensive Income (Loss) (Unaudited) link:presentationLink link:calculationLink link:definitionLink 9952155 - Statement - Condensed Consolidated Statements of Comprehensive Income (Loss) (Unaudited) (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 9952156 - Statement - Condensed Consolidated Statements of Shareholders' Equity (Unaudited) link:presentationLink link:calculationLink link:definitionLink 9952157 - Statement - Condensed Consolidated Statements of Shareholders' 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 - Disclosure - Business and Basis of Presentation link:presentationLink link:calculationLink link:definitionLink 9952160 - Disclosure - Assured Life Re Acquisition link:presentationLink link:calculationLink link:definitionLink 9952161 - Disclosure - Segment Information link:presentationLink link:calculationLink link:definitionLink 9952162 - Disclosure - Outstanding Exposure link:presentationLink link:calculationLink link:definitionLink 9952163 - Disclosure - Expected Loss to be Paid (Recovered) link:presentationLink link:calculationLink link:definitionLink 9952164 - Disclosure - Contracts Accounted for as Financial Guaranty Insurance link:presentationLink link:calculationLink link:definitionLink 9952165 - Disclosure - Annuity Reinsurance link:presentationLink link:calculationLink link:definitionLink 9952166 - Disclosure - Derivatives link:presentationLink link:calculationLink link:definitionLink 9952167 - Disclosure - Investments link:presentationLink link:calculationLink link:definitionLink 9952168 - Disclosure - Variable Interest Entities link:presentationLink link:calculationLink link:definitionLink 9952169 - Disclosure - Fair Value Measurement link:presentationLink link:calculationLink link:definitionLink 9952170 - Disclosure - Income Taxes link:presentationLink link:calculationLink link:definitionLink 9952171 - Disclosure - Contingencies link:presentationLink link:calculationLink link:definitionLink 9952172 - Disclosure - Shareholders' Equity link:presentationLink link:calculationLink link:definitionLink 9952173 - Disclosure - Earnings Per Share link:presentationLink link:calculationLink link:definitionLink 9955511 - Disclosure - Business and Basis of Presentation (Policies) link:presentationLink link:calculationLink link:definitionLink 9955512 - Disclosure - Assured Life Re Acquisition (Tables) link:presentationLink link:calculationLink link:definitionLink 9955513 - Disclosure - Segment Information (Tables) link:presentationLink link:calculationLink link:definitionLink 9955514 - Disclosure - Outstanding Exposure (Tables) link:presentationLink link:calculationLink link:definitionLink 9955515 - Disclosure - Expected Loss to be Paid (Recovered) (Tables) link:presentationLink link:calculationLink link:definitionLink 9955516 - Disclosure - Contracts Accounted for as Financial Guaranty Insurance (Tables) link:presentationLink link:calculationLink link:definitionLink 9955517 - Disclosure - Annuity Reinsurance (Tables) link:presentationLink link:calculationLink link:definitionLink 9955518 - Disclosure - Derivatives (Tables) link:presentationLink link:calculationLink link:definitionLink 9955519 - Disclosure - Investments (Tables) link:presentationLink link:calculationLink link:definitionLink 9955520 - Disclosure - Variable Interest Entities (Tables) link:presentationLink link:calculationLink link:definitionLink 9955521 - Disclosure - Fair Value Measurement (Tables) link:presentationLink link:calculationLink link:definitionLink 9955522 - Disclosure - Shareholders' Equity (Tables) link:presentationLink link:calculationLink link:definitionLink 9955523 - Disclosure - Earnings Per Share (Tables) link:presentationLink link:calculationLink link:definitionLink 9955524 - Disclosure - Business and Basis of Presentation - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 9955525 - Disclosure - Assured Life Re Acquisition - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 9955526 - Disclosure - Assured Life Re Acquisition - Net Effect of the Acquisition on the Acquisition Date (Details) link:presentationLink link:calculationLink link:definitionLink 9955527 - Disclosure - Segment Information - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 9955528 - Disclosure - Segment Information - Segment Information (Details) link:presentationLink link:calculationLink link:definitionLink 9955529 - Disclosure - Segment Information - Reconciliation of Net Income (Loss) Attributable to AGL to Segment Adjusted Operating Income (Loss) (Details) link:presentationLink link:calculationLink link:definitionLink 9955530 - Disclosure - Outstanding Exposure - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 9955531 - Disclosure - Outstanding Exposure - Debt Service Outstanding (Details) link:presentationLink link:calculationLink link:definitionLink 9955532 - Disclosure - Outstanding Exposure - Financial Guaranty Portfolio by Internal Rating (Details) link:presentationLink link:calculationLink link:definitionLink 9955533 - Disclosure - Outstanding Exposure - Components of BIG Net Par Outstanding (Details) link:presentationLink link:calculationLink link:definitionLink 9955534 - Disclosure - Outstanding Exposure - BIG Net Par Outstanding (Details) link:presentationLink link:calculationLink link:definitionLink 9955535 - Disclosure - Outstanding Exposure - Schedule of Non-Financial Guaranty Exposure (Details) link:presentationLink link:calculationLink link:definitionLink 9955536 - Disclosure - Expected Loss to be Paid (Recovered) - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 9955537 - Disclosure - Expected Loss to be Paid (Recovered) - Net Expected Loss to be Paid (Recovered) and Net Economic Loss Development (Benefit) by Accounting Model (Details) link:presentationLink link:calculationLink link:definitionLink 9955538 - Disclosure - Expected Loss to be Paid (Recovered) - Net Expected Loss to be Paid After Net Expected Recoveries for Breaches of R&W Rollforward (Details) link:presentationLink link:calculationLink link:definitionLink 9955539 - Disclosure - Expected Loss to be Paid (Recovered) - Net Economic Loss Development (Benefit) (Details) link:presentationLink link:calculationLink link:definitionLink 9955540 - Disclosure - Contracts Accounted for as Financial Guaranty Insurance - Net Earned Premiums (Details) link:presentationLink link:calculationLink link:definitionLink 9955541 - Disclosure - Contracts Accounted for as Financial Guaranty Insurance - Gross Premium Receivable Net of Commissions on Assumed Business Roll Forward (Details) link:presentationLink link:calculationLink link:definitionLink 9955542 - Disclosure - Contracts Accounted for as Financial Guaranty Insurance - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 9955543 - Disclosure - Contracts Accounted for as Financial Guaranty Insurance - Expected Future Premium Collections and Earnings (Details) link:presentationLink link:calculationLink link:definitionLink 9955544 - Disclosure - Contracts Accounted for as Financial Guaranty Insurance - Selected Information for Policies Paid In Installments (Details) link:presentationLink link:calculationLink link:definitionLink 9955545 - Disclosure - Contracts Accounted for as Financial Guaranty Insurance - Loss and LAE Reserve and Salvage and Subrogation Recoverable Net of Reinsurance (Details) link:presentationLink link:calculationLink link:definitionLink 9955546 - Disclosure - Contracts Accounted for as Financial Guaranty Insurance - Reconciliation of Net Expected Loss to be Paid and Expensed (Details) link:presentationLink link:calculationLink link:definitionLink 9955547 - Disclosure - Contracts Accounted for as Financial Guaranty Insurance - Net Expected Loss to be Expensed Insurance Contracts (Details) link:presentationLink link:calculationLink link:definitionLink 9955548 - Disclosure - Contracts Accounted for as Financial Guaranty Insurance - Loss and LAE Reported on the Statements of Operations (Details) link:presentationLink link:calculationLink link:definitionLink 9955549 - Disclosure - Contracts Accounted for as Financial Guaranty Insurance - BIG Transaction Loss Summary (Details) link:presentationLink link:calculationLink link:definitionLink 9955550 - Disclosure - Annuity Reinsurance - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 9955551 - Disclosure - Annuity Reinsurance - Future Policy Benefits for Annuity Reinsurance Contracts (Details) link:presentationLink link:calculationLink link:definitionLink 9955552 - Disclosure - Annuity Reinsurance - Rollforward of Liability for Future Policy Benefit (Details) link:presentationLink link:calculationLink link:definitionLink 9955553 - Disclosure - Annuity Reinsurance - Rollforward of Policyholder Account Balances (Details) link:presentationLink link:calculationLink link:definitionLink 9955554 - Disclosure - Annuity Reinsurance - Range of Guaranteed Minimum Credit Rating (Details) link:presentationLink link:calculationLink link:definitionLink 9955555 - Disclosure - Derivatives - Credit Derivatives Subordination and Ratings (Details) link:presentationLink link:calculationLink link:definitionLink 9955556 - Disclosure - Derivatives - CDS Spread and Components of Credit Derivative Assets (Liabilities) (Details) link:presentationLink link:calculationLink link:definitionLink 9955557 - Disclosure - Derivatives - Non-credit Derivatives (Details) link:presentationLink link:calculationLink link:definitionLink 9955558 - Disclosure - Derivatives - Net Change in Fair Value of Credit Derivatives Gains (Losses) (Details) link:presentationLink link:calculationLink link:definitionLink 9955559 - Disclosure - Derivatives - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955560 - Disclosure - Investments - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 9955561 - Disclosure - Investments - Internally Managed Investment Portfolio (Details) link:presentationLink link:calculationLink link:definitionLink 9955562 - Disclosure - Investments - Fixed Maturity Securities and Short Term Investments (Details) link:presentationLink link:calculationLink link:definitionLink 9955563 - Disclosure - Investments - Gross Unrealized Loss by Length of Time (Details) link:presentationLink link:calculationLink link:definitionLink 9955564 - Disclosure - Investments - Distribution of Fixed-Maturity Securities by Contractual Maturity (Details) link:presentationLink link:calculationLink link:definitionLink 9955565 - Disclosure - Investments - Net Investment Income and Equity in Earnings of Investees (Details) link:presentationLink link:calculationLink link:definitionLink 9955566 - Disclosure - Investments - Net Realized Investment Gains (Losses) (Details) link:presentationLink link:calculationLink link:definitionLink 9955567 - Disclosure - Investments - Roll Forward of Credit Losses in the Investment Portfolio (Details) link:presentationLink link:calculationLink link:definitionLink 9955568 - Disclosure - Variable Interest Entities - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 9955569 - Disclosure - Variable Interest Entities - Consolidated FG VIE's By Type of Collateral (Details) link:presentationLink link:calculationLink link:definitionLink 9955570 - Disclosure - Variable Interest Entities - Unpaid Principal (Details) link:presentationLink link:calculationLink link:definitionLink 9955571 - Disclosure - Fair Value Measurement - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 9955572 - Disclosure - Fair Value Measurement - Financial Instruments Carried at Fair Value (Details) link:presentationLink link:calculationLink link:definitionLink 9955573 - Disclosure - Fair Value Measurement - Fair Value Level 3 Rollforward Recurring Basis (Details) link:presentationLink link:calculationLink link:definitionLink 9955574 - Disclosure - Fair Value Measurement - Quantitative Information - Assets & Liabilities (Details) link:presentationLink link:calculationLink link:definitionLink 9955575 - Disclosure - Fair Value Measurement - Fair Value of Financial Instruments Not Carried at Fair Value (Details) link:presentationLink link:calculationLink link:definitionLink 9955576 - Disclosure - Income Taxes - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 9955577 - Disclosure - Contingencies (Details) link:presentationLink link:calculationLink link:definitionLink 9955578 - Disclosure - Shareholders' Equity - Changes in AOCI by Component (Details) link:presentationLink link:calculationLink link:definitionLink 9955579 - Disclosure - Shareholders' Equity - Shares Repurchased (Details) link:presentationLink link:calculationLink link:definitionLink 9955580 - Disclosure - Shareholders' Equity - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 9955581 - Disclosure - Earnings Per Share (Details) link:presentationLink link:calculationLink link:definitionLink