| Current Federal Tax Expense (Benefit) | 1.11B | 2025-01-01 → 2025-12-31 |
| Current State and Local Tax Expense (Benefit) | 164.26M | 2025-01-01 → 2025-12-31 |
| Current Foreign Tax Expense (Benefit) | 204.46M | 2025-01-01 → 2025-12-31 |
| Current Income Tax Expense (Benefit) | 1.48B | 2025-01-01 → 2025-12-31 |
| Deferred Federal Income Tax Expense (Benefit) | -554.17M | 2025-01-01 → 2025-12-31 |
| Deferred State and Local Income Tax Expense (Benefit) | 41.17M | 2025-01-01 → 2025-12-31 |
| Deferred Foreign Income Tax Expense (Benefit) | -11.94M | 2025-01-01 → 2025-12-31 |
| Share-based Payment Arrangement, Expense | 722.11M | 2025-01-01 → 2025-12-31 |
| SEC Schedule, 12-17, Insurance Companies, Reinsurance, Life Insurance in Force, Gross | 72.64B | as of 2025-12-31 |
| SEC Schedule, 12-17, Insurance Companies, Reinsurance, Life Insurance in Force, Ceded | 47.00B | as of 2025-12-31 |
| SEC Schedule, 12-17, Insurance Companies, Reinsurance, Life Insurance in Force, Assumed | 41.97B | as of 2025-12-31 |
| SEC Schedule, 12-17, Insurance Companies, Reinsurance, Life Insurance in Force, Net | 67.60B | as of 2025-12-31 |
| Effective Income Tax Rate Reconciliation at Federal Statutory Income Tax Rate, Amount | 1.49B | 2025-01-01 → 2025-12-31 |
| Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Amount | 170.29M | 2025-01-01 → 2025-12-31 |
| EffectiveIncomeTaxRateReconciliationCrossBorderOtherAmount | -9.00M | 2025-01-01 → 2025-12-31 |
| Direct Premiums Earned | 1.82B | 2025-01-01 → 2025-12-31 |
| Ceded Premiums Earned | 1.80B | 2025-01-01 → 2025-12-31 |
| Effective Income Tax Rate Reconciliation, Tax Credit, Amount | 4.84M | 2025-01-01 → 2025-12-31 |
| Assumed Premiums Earned | 3.37B | 2025-01-01 → 2025-12-31 |
| Effective Income Tax Rate Reconciliation, Tax Contingency, Amount | -619.00K | 2025-01-01 → 2025-12-31 |
| Effective Income Tax Rate Reconciliation, Tax Exempt Income, Amount | 773.25M | 2025-01-01 → 2025-12-31 |
| Debt Securities, Available-for-sale, Realized Gain | 168.99M | 2025-01-01 → 2025-12-31 |
| Debt Securities, Available-for-sale, Realized Loss | -1.87B | 2025-01-01 → 2025-12-31 |
| Effective Income Tax Rate Reconciliation, Change in Enacted Tax Rate, Amount | 0 | 2025-01-01 → 2025-12-31 |
| Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Amount | 4.58M | 2025-01-01 → 2025-12-31 |
| Effective Income Tax Rate Reconciliation, Other Adjustments, Amount | -1.02M | 2025-01-01 → 2025-12-31 |
| Debt Securities, Available-for-Sale, Amortized Cost, Maturity, Allocated and Single Maturity Date, Year One | 803.40M | as of 2025-12-31 |
| Debt Securities, Available-for-Sale, Amortized Cost, Maturity, Allocated and Single Maturity Date, after Year One Through Five | 11.98B | as of 2025-12-31 |
| Debt Securities, Available-for-Sale, Amortized Cost, Maturity, Allocated and Single Maturity Date, after Year 5 Through 10 | 15.28B | as of 2025-12-31 |
| Debt Securities, Available-for-Sale, Amortized Cost, Maturity, Allocated and Single Maturity Date, after Year 10 | 33.99B | as of 2025-12-31 |
| Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Amortized Cost | 62.06B | as of 2025-12-31 |
| Net Income (Loss) Available to Common Stockholders, Diluted | 2.24B | 2025-01-01 → 2025-12-31 |
| Derivative, Notional Amount | 108.28B | as of 2025-12-31 |
| Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, Year One | 793.19M | as of 2025-12-31 |
| Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, after Year One Through Five | 11.89B | as of 2025-12-31 |
| Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, after Year 5 Through 10 | 15.45B | as of 2025-12-31 |
| Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, after Year 10 | 28.23B | as of 2025-12-31 |
| Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Fair Value | 56.36B | as of 2025-12-31 |
| Investment Owned, at Fair Value | 319.96B | as of 2025-12-31 |
| Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss | 356.63M | as of 2025-12-31 |
| Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss | 6.39B | as of 2025-12-31 |
| Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss | 6.75B | as of 2025-12-31 |
| Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax | 929.77M | as of 2025-12-31 |
| Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax | 6.75B | as of 2025-12-31 |
| Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months | 13.83B | as of 2025-12-31 |
| Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer | 22.30B | as of 2025-12-31 |
| Debt Securities, Available-for-sale, Unrealized Loss Position | 36.13B | as of 2025-12-31 |
| FinancingReceivableExcludingAccruedInterestCreditLossExpenseReversal | 126.43M | 2025-01-01 → 2025-12-31 |
| FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossWriteoff | 156.54M | 2025-01-01 → 2025-12-31 |
| FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossRecovery | 24.20M | 2025-01-01 → 2025-12-31 |
| Right-of-Use Asset Obtained in Exchange for Operating Lease Liability | 155.20M | 2025-01-01 → 2025-12-31 |
| Deferred Policy Acquisition Cost, Capitalization | 964.25M | 2025-01-01 → 2025-12-31 |
| Assets, Fair Value Disclosure | 249.64B | as of 2025-12-31 |
| Present Value of Future Insurance Profits, Expected Amortization, Year One | 79.62M | as of 2025-12-31 |
| Present Value of Future Insurance Profits, Expected Amortization, Year Two | 74.44M | as of 2025-12-31 |
| Present Value of Future Insurance Profits, Expected Amortization, Year Three | 69.79M | as of 2025-12-31 |
| Present Value of Future Insurance Profits, Expected Amortization, Year Four | 65.60M | as of 2025-12-31 |
| Present Value of Future Insurance Profits, Expected Amortization, Year Five | 61.69M | as of 2025-12-31 |
| Financial and Nonfinancial Liabilities, Fair Value Disclosure | 40.08B | as of 2025-12-31 |
| Hedged Liability, Discontinued Fair Value Hedge, Cumulative Increase (Decrease) | 154.60M | as of 2025-12-31 |
| Purchase Obligation, to be Paid, Year One | 27.82M | as of 2025-12-31 |
| Purchase Obligation, to be Paid, Year Two | 17.63M | as of 2025-12-31 |
| Purchase Obligation, to be Paid, Year Three | 12.27M | as of 2025-12-31 |
| Purchase Obligation, to be Paid, Year Four | 10.45M | as of 2025-12-31 |
| DebtSecuritiesAvailableForSaleExcludingAccruedInterestAllowanceForCreditLossNotPreviouslyRecorded | 92.00M | 2025-01-01 → 2025-12-31 |
| Purchase Obligation, to be Paid, Year Five | 9.29M | as of 2025-12-31 |
| DebtSecuritiesAvailableForSaleExcludingAccruedInterestPurchasedWithCreditDeteriorationAllowanceForCreditLossAtAcquisitionDate | 5.80M | 2025-01-01 → 2025-12-31 |
| DebtSecuritiesAvailableForSaleExcludingAccruedInterestAllowanceForCreditLossSecuritiesSold | 36.92M | 2025-01-01 → 2025-12-31 |
| Purchase Obligation, to be Paid, after Year Five | 45.07M | as of 2025-12-31 |
| Purchase Obligation | 122.52M | as of 2025-12-31 |
| DebtSecuritiesAvailableForSaleExcludingAccruedInterestAllowanceForCreditLossNotToSellBeforeRecoveryCreditLossPreviouslyRecordedExpenseReversal | 45.73M | 2025-01-01 → 2025-12-31 |
| DebtSecuritiesAvailableForSaleExcludingAccruedInterestAllowanceForCreditLossWriteoff | 88.27M | 2025-01-01 → 2025-12-31 |
| DebtSecuritiesAvailableForSaleExcludingAccruedInterestAllowanceForCreditLossRecovery | 0 | 2025-01-01 → 2025-12-31 |
| Unrecognized Tax Benefits | 32.59M | as of 2025-12-31 |
| Unrecognized Tax Benefits, Increase Resulting from Prior Period Tax Positions | 0 | 2025-01-01 → 2025-12-31 |
| Unrecognized Tax Benefits, Decrease Resulting from Prior Period Tax Positions | 577.00K | 2025-01-01 → 2025-12-31 |
| Unrecognized Tax Benefits, Increase Resulting from Current Period Tax Positions | 7.36M | 2025-01-01 → 2025-12-31 |
| Unrecognized Tax Benefits, Decrease Resulting from Settlements with Taxing Authorities | 7.03M | 2025-01-01 → 2025-12-31 |
| Unrecognized Tax Benefits, Reduction Resulting from Lapse of Applicable Statute of Limitations | 0 | 2025-01-01 → 2025-12-31 |
| Unrecognized Tax Benefits, Income Tax Penalties Expense | 300.00K | 2025-01-01 → 2025-12-31 |
| Unrecognized Tax Benefits, Interest on Income Taxes Expense | 1.60M | 2025-01-01 → 2025-12-31 |
| Unrecognized Tax Benefits, Income Tax Penalties Accrued | 2.60M | as of 2025-12-31 |
| Unrecognized Tax Benefits, Interest on Income Taxes Accrued | 8.50M | as of 2025-12-31 |
| Liability for Future Policy Benefit, Gross Premium Income | 5.15B | 2025-01-01 → 2025-12-31 |
| LiabilityForFuturePolicyBenefitRemeasurementGainLoss | 82.69M | 2025-01-01 → 2025-12-31 |
| Income (Loss) from Continuing Operations before Income Taxes, Domestic | 6.47B | 2025-01-01 → 2025-12-31 |
| Income (Loss) from Continuing Operations before Income Taxes, Foreign | 624.29M | 2025-01-01 → 2025-12-31 |
| AdditionalLiabilityLongDurationInsuranceIssuance | 23.53M | 2025-01-01 → 2025-12-31 |
| Additional Liability, Long-Duration Insurance, Interest Income (Expense) | 254.56M | 2025-01-01 → 2025-12-31 |
| AdditionalLiabilityLongDurationInsuranceNetPremiumCollected | 698.52M | 2025-01-01 → 2025-12-31 |
| AdditionalLiabilityLongDurationInsuranceBenefitPayment | 532.14M | 2025-01-01 → 2025-12-31 |
| AdditionalLiabilityLongDurationInsuranceIncreaseDecreaseFromDiscountRateChange | -81.37M | 2025-01-01 → 2025-12-31 |
| AdditionalLiabilityLongDurationInsuranceReinsuranceRecoverableAfterAllowance | 1.76B | as of 2025-12-31 |
| Additional Liability, Long-Duration Insurance, after Reinsurance | 6.17B | as of 2025-12-31 |
| AdditionalLiabilityLongDurationInsuranceGrossPremiumIncome | 701.06M | 2025-01-01 → 2025-12-31 |
| PolicyholderAccountBalanceIssuance | 31.18B | 2025-01-01 → 2025-12-31 |
| PolicyholderAccountBalanceIncreaseDecreaseFromOtherChange | -1.07B | 2025-01-01 → 2025-12-31 |
| PolicyholderAccountBalanceNetAmountAtRisk | 106.13B | as of 2025-12-31 |
| Policyholder Account Balance, Cash Surrender Value | 109.96B | as of 2025-12-31 |
| MarketRiskBenefitIncreaseDecreaseFromOtherAssumption | 6.00M | 2025-01-01 → 2025-12-31 |
| MarketRiskBenefitAssetAmount | 997.00K | as of 2025-12-31 |
| MarketRiskBenefitLiabilityAmount | 1.35B | as of 2025-12-31 |
| Market Risk Benefit, Change in Fair Value, Gain (Loss) | -312.45M | 2025-01-01 → 2025-12-31 |
| Separate Account, Liability, Cash Surrender Value, Amount | 3.84B | as of 2025-12-31 |
| Separate Account, Liability, Premium and Deposit | 32.42M | 2025-01-01 → 2025-12-31 |
| Separate Account, Liability, Surrender and Withdrawal | 502.58M | 2025-01-01 → 2025-12-31 |
| SeparateAccountLiabilityIncreaseDecreaseFromInvestedPerformance | 474.65M | 2025-01-01 → 2025-12-31 |
| SeparateAccountLiabilityIncreaseDecreaseFromOtherChange | -144.15M | 2025-01-01 → 2025-12-31 |
| Embedded Derivative, Fair Value of Embedded Derivative Liability | 7.80B | as of 2025-12-31 |