| Revenues | $17.5B | $18.6B | $19.4B | $19.7B | $20.6B | $21.2B | $21.4B | $21.3B |
| Payments to Acquire Debt Securities, Available-for-Sale | $11.2B | $11.3B | $11.9B | $17.3B | $9.0B | $8.6B | $14.7B | $19.3B |
| Benefits, Losses and Expenses | $16.3B | $16.8B | $17.3B | $17.2B | $18.0B | $19.2B | $19.1B | $18.6B |
| Current year | $12.6B | $12.6B | $13.2B | $13.1B | $13.9B | $13.9B | $14.4B | $14.3B |
| Liability for Unpaid Claims and Claims Adjustment Expense, Incurred Claims | $12.6B | $12.5B | $13.0B | $12.8B | $13.6B | $13.4B | $14.1B | $13.8B |
| Liability for Unpaid Claims and Claims Adjustment Expense, Claims Paid | $10.7B | $11.1B | $11.9B | $11.7B | $12.0B | $12.4B | $12.9B | $12.7B |
| Losses (excluding catastrophe losses) | $9.7B | $10.1B | $11.1B | $10.7B | $11.1B | $11.4B | $12.1B | $11.7B |
| Sale of investments | $5.9B | $4.9B | $7.1B | $14.7B | $2.4B | $434.0M | $18.2B | $11.1B |
| Payments of Ordinary Dividends, Common Stock | $59.0M | $58.0M | $59.0M | $2.7B | $59.0M | $58.0M | $59.0M | $8.0B |
| Cash Dividends, Common Stock | $59.0M | $58.0M | $59.0M | $2.7B | $59.0M | $58.0M | $59.0M | $8.0B |
| Payments For Proceeds From Short Term Investments | — | — | — | $2.0B | — | — | — | -$7.9B |
| Prior years | $3.6B | $2.9B | $2.7B | $6.8B | $4.1B | $3.3B | $2.9B | $7.3B |
| Cash Provided by (Used in) Financing Activity, Including Discontinued Operation | -$70.0M | -$144.0M | -$59.0M | -$2.7B | -$72.0M | -$98.0M | -$118.0M | -$7.0B |
| Current year | $7.0B | $8.2B | $9.2B | $4.9B | $8.0B | $9.1B | $10.0B | $5.4B |
| Expense Related to Distribution or Servicing and Underwriting Fees | $3.5B | $4.1B | $4.1B | $4.2B | $4.2B | $5.5B | $4.8B | $4.6B |
| Cash Provided by (Used in) Operating Activity, Including Discontinued Operation | $3.3B | $4.6B | $3.0B | $5.1B | $4.0B | $5.2B | $3.2B | $4.4B |
| Other underwriting expenses | $2.2B | $2.7B | $2.7B | $2.7B | $2.7B | $3.0B | $2.9B | $3.0B |
| Distribution expenses | $2.1B | $2.6B | $2.6B | $2.6B | $2.6B | $2.8B | $2.9B | $3.0B |
| Pretax underwriting profit (loss) | $1.4B | $2.0B | $2.3B | $2.7B | $2.8B | $2.2B | $2.5B | $2.9B |
| Unearned premiums | $774.0M | $1.1B | — | $2.8B | — | $487.0M | — | $2.7B |
| Cash Provided by (Used in) Investing Activity, Including Discontinued Operation | -$3.3B | -$4.4B | -$2.9B | -$2.3B | -$4.0B | -$5.0B | -$3.1B | $2.6B |
| Proceeds from Maturities, Prepayments and Calls of Debt Securities, Available-for-Sale | $1.4B | $1.5B | $2.3B | $2.0B | $2.1B | $2.3B | $2.2B | $2.5B |
| Increase (Decrease) in Premiums Receivable | $352.0M | $590.0M | — | $2.4B | — | $113.0M | — | $2.3B |
| Comprehensive Income (Loss), Net of Tax, Attributable to Parent | $1.6B | $3.9B | $1.1B | $3.5B | $3.6B | $2.9B | $2.9B | $2.2B |
| Loss adjustment expenses | $1.6B | $1.7B | $1.7B | $1.7B | $1.8B | $1.8B | $1.9B | $1.9B |
| Other underwriting expenses | $1.4B | $1.5B | $1.5B | $1.5B | $1.6B | $2.7B | $1.9B | $1.6B |
| Deferred Policy Acquisition Costs, Amortization Expense | $1.3B | $1.4B | $1.5B | $1.5B | $1.5B | $1.6B | $1.6B | $1.5B |
| Proceeds from debt financing, net of issuance costs | — | — | — | $0.0 | — | — | — | $1.5B |
| Loss and loss adjustment expense reserves | $1.8B | $1.5B | $995.0M | $765.0M | $1.3B | $951.0M | $1.2B | $1.1B |
| Investment income | $685.0M | $739.0M | $790.0M | $814.0M | $871.0M | $924.0M | $974.0M | $917.0M |
| Interest and Dividend Income, Operating | $685.0M | $739.0M | $790.0M | $814.0M | $871.0M | $924.0M | $974.0M | $917.0M |
| Income taxes | -$951.0M | -$25.0M | $0.0 | $667.0M | -$840.0M | — | -$62.0M | $830.0M |
| Net interest and investment income (loss) | $551.0M | $1.0B | $728.0M | $595.0M | $1.2B | $1.2B | $1.2B | $789.0M |
| Accounts payable and other current liabilities | $600.0M | $543.0M | — | $334.0M | $216.0M | $1.5B | — | -$788.0M |
| Other Comprehensive Income (Loss), Before Tax | $136.0M | $2.0B | — | $1.1B | $543.0M | $359.0M | $0.0 | -$726.0M |
| Other Comprehensive Income (Loss), before Tax, Portion Attributable to Parent | $136.0M | $2.0B | — | $1.1B | $543.0M | $359.0M | $0.0 | -$726.0M |
| Unrealized Gain (Loss) on Securities | -$85.0M | $2.0B | -$1.7B | $1.1B | $558.0M | $362.0M | $64.0M | -$628.0M |
| OCI Unrealized Holding Gain (Loss) on Securities, Before Tax | -$85.0M | $2.0B | -$1.7B | $1.1B | $558.0M | $362.0M | $64.0M | -$628.0M |
| OCI Available-for-Sale Debt Securities, Before Tax | -$85.0M | $2.0B | -$1.7B | $1.1B | $558.0M | $362.0M | $64.0M | -$628.0M |
| Other Comprehensive Income (Loss), Net of Tax | $108.0M | $1.6B | — | $899.0M | $429.0M | $284.0M | $0.0 | -$574.0M |
| OCI - Available-for-sale securities, net of tax | $108.0M | $1.6B | — | $899.0M | $428.0M | $284.0M | $0.0 | -$574.0M |
| OCI Net Unrealized Gain (Loss) on Securities | $108.0M | $1.6B | — | $899.0M | $428.0M | $284.0M | $0.0 | -$574.0M |
| OCI Attributable to Parent | $108.0M | $1.6B | — | $899.0M | $429.0M | $284.0M | $0.0 | -$574.0M |
| OCI Available for Sale Securities Adjustment | $108.0M | $1.6B | — | $899.0M | $428.0M | $284.0M | $0.0 | -$574.0M |
| Unrealized Gains on Available-for-Sale Securities | $108.0M | $1.6B | — | $899.0M | $428.0M | $284.0M | $0.0 | -$574.0M |
| Unrealized gains (losses) on available-for-sale securities | $108.0M | $1.6B | — | $899.0M | $428.0M | $284.0M | $0.0 | -$574.0M |
| Other comprehensive income/(loss) | $108.0M | $1.6B | — | $899.0M | $429.0M | $284.0M | $0.0 | -$574.0M |
| Other Comprehensive Income (Loss) | $108.0M | $1.6B | — | $899.0M | $428.0M | $284.0M | $0.0 | -$574.0M |
| OCI Available for Sale Securities Adjustment, Net of Tax | $108.0M | $1.6B | — | $899.0M | $428.0M | $284.0M | $0.0 | -$574.0M |
| Other Comprehensive Income (Loss), Net of Tax, Attributable to Parent | $108.0M | $1.6B | — | $899.0M | $429.0M | $284.0M | $0.0 | -$574.0M |
| OCI Net of Tax, Parent | $108.0M | $1.6B | — | $899.0M | $429.0M | $284.0M | $0.0 | -$574.0M |
| OCI Unrealized Gain (Loss) on Securities, Pre-tax | $108.0M | $1.6B | — | $899.0M | $428.0M | $284.0M | $0.0 | -$574.0M |
| OCI Unrealized Holding Gain (Loss) on Securities, Net of Tax | -$67.0M | $1.6B | -$1.4B | $875.0M | $441.0M | $286.0M | $55.0M | -$496.0M |
| OCI Unrealized Holding Gain (Loss) on Securities, Net of Tax | -$67.0M | $1.6B | -$1.4B | $875.0M | $441.0M | $286.0M | $55.0M | -$496.0M |
| Net unrealized gains (losses) on securities still held | -$67.0M | $1.6B | -$1.4B | $875.0M | $441.0M | $286.0M | $55.0M | -$496.0M |
| Prior years | -$52.0M | -$136.0M | -$217.0M | -$278.0M | -$329.0M | -$461.0M | -$326.0M | -$451.0M |
| Payments for Repurchase of Common Stock in the Open Market | — | $3.0M | — | $0.0 | $12.0M | $3.0M | $59.0M | $435.0M |
| Catastrophe losses | $1.3B | $732.0M | $166.0M | $459.0M | $707.0M | $219.0M | $93.0M | $268.0M |
| Net change in unsettled security transactions | $58.0M | $394.0M | — | $172.0M | $6.0M | $220.0M | — | $243.0M |
| Premium Receivable, Allowance for Credit Loss, Writeoff | $128.0M | $107.0M | $116.0M | $140.0M | $148.0M | $196.0M | $185.0M | $207.0M |
| Increase in allowance | $128.0M | $167.0M | $188.0M | $153.0M | $176.0M | $211.0M | $221.0M | $183.0M |
| Other Comprehensive Income (Loss), Tax, Portion Attributable to Parent | — | — | — | $239.0M | — | — | — | -$152.0M |
| Equity securities | — | $87.0M | — | $87.0M | $90.0M | $63.0M | $35.0M | $152.0M |
| Debt and Equity Securities, Realized Gains | $3.0M | $59.0M | $35.0M | $91.0M | $31.0M | $19.0M | $293.0M | $148.0M |
| Increase (Decrease) in Other Operating Assets and Liabilities, Net | $172.0M | $0.0 | $75.0M | $34.0M | -$88.0M | $196.0M | — | $141.0M |
| OCI Available-for-Sale Securities Tax | -$18.0M | $423.0M | -$359.0M | $233.0M | $117.0M | $76.0M | $9.0M | -$132.0M |
| OCI Unrealized Holding Gain (Loss) on Securities, Tax | -$18.0M | $423.0M | -$359.0M | $233.0M | $117.0M | $76.0M | $9.0M | -$132.0M |
| Tax effect of unrealized gain (loss) on AFS securities | -$18.0M | $423.0M | -$359.0M | $233.0M | $117.0M | $76.0M | $9.0M | -$132.0M |
| Tax expense (benefit) of unrealized gains/losses on available for sale securities still held | -$18.0M | $423.0M | -$359.0M | $233.0M | $117.0M | $76.0M | $9.0M | -$132.0M |
| Unrealized Gain (Loss) on Available-for-Sale Securities, Net | -$18.0M | $423.0M | -$359.0M | $233.0M | $117.0M | $76.0M | $9.0M | -$132.0M |
| Tax on Unrealized Gain (Loss) on Securities | -$18.0M | $423.0M | -$359.0M | $233.0M | $117.0M | $76.0M | $9.0M | -$132.0M |
| Service expenses | $115.0M | $126.0M | $113.0M | $117.0M | $139.0M | $144.0M | $128.0M | $131.0M |
| Gross realized gains (losses) | — | $288.0M | — | -$212.0M | $387.0M | $295.0M | $257.0M | -$120.0M |
| OCI Reclassification Adjustment for Sale of Securities, Before Tax | -$221.0M | $36.0M | -$104.0M | -$30.0M | $16.0M | $3.0M | $166.0M | $98.0M |
| Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax | -$221.0M | $36.0M | -$105.0M | -$30.0M | $15.0M | $3.0M | $165.0M | $98.0M |
| OCI Reclassification for Sale of Securities, Before Tax | -$221.0M | $36.0M | -$104.0M | -$30.0M | $16.0M | $3.0M | $166.0M | $98.0M |
| Debt and Equity Securities, Realized Gain (Loss) | -$227.0M | $68.0M | -$109.0M | $1.0M | $19.0M | $12.0M | $216.0M | $96.0M |
| Debt and Equity Securities, Realized Gains (Losses) on Security Sales | -$227.0M | $32.0M | -$109.0M | $1.0M | $19.0M | $12.0M | $216.0M | $96.0M |
| Interest Paid, Net | $50.0M | $88.0M | $50.0M | $88.0M | $50.0M | $88.0M | $50.0M | $88.0M |
| Interest Paid, Excluding Capitalized Interest, Operating Activity | $50.0M | $88.0M | $50.0M | $88.0M | $50.0M | $88.0M | $50.0M | $88.0M |
| Increase (Decrease) in Deferred Policy Acquisition Costs | $120.0M | $94.0M | — | $107.0M | $42.0M | $54.0M | — | $87.0M |
| Total net securities (losses) | -$222.0M | $37.0M | -$104.0M | -$30.0M | $18.0M | $3.0M | $166.0M | $86.0M |
| Proceeds From Income Tax Refunds | — | — | — | — | — | — | — | $85.0M |
| Increase (Decrease) in Reinsurance Recoverable | -$122.0M | $0.0 | -$116.0M | -$316.0M | -$252.0M | -$90.0M | -$24.0M | -$80.0M |
| Reclassification from AOCI | -$175.0M | $29.0M | -$84.0M | -$24.0M | $12.0M | $2.0M | $141.0M | $78.0M |
| OCI Reclassification Adjustment for Sale of Securities | -$175.0M | $29.0M | -$83.0M | -$24.0M | $13.0M | $2.0M | $142.0M | $78.0M |
| OCI Reclassification Adjustment, Sale of Securities, Net of Tax | -$175.0M | $29.0M | -$83.0M | -$24.0M | $13.0M | $2.0M | $142.0M | $78.0M |
| Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Net of Tax | — | — | — | -$24.0M | — | — | — | $78.0M |
| Reclassified net gains (losses) from AOCI into earnings | -$175.0M | $29.0M | -$84.0M | -$24.0M | $12.0M | $2.0M | $141.0M | $78.0M |
| OCI Reclassifications to Net Income | -$175.0M | $29.0M | -$84.0M | -$24.0M | $12.0M | $2.0M | $141.0M | $78.0M |
| Depreciation | $68.0M | $70.0M | $76.0M | $70.0M | $79.0M | $81.0M | $83.0M | $75.0M |
| Debt | $69.0M | $70.0M | $70.0M | $70.0M | $69.0M | $70.0M | $69.0M | $70.0M |
| Capital Expenditures | $68.0M | $57.0M | $110.0M | $59.0M | $102.0M | $66.0M | $121.0M | $63.0M |
| Payments to Acquire Property, Plant, and Equipment | $68.0M | $57.0M | $110.0M | $59.0M | $102.0M | $66.0M | $121.0M | $63.0M |
| Payments to Acquire Equity Securities, FV-NI | $0.0 | $78.0M | $58.0M | $86.0M | $1.0M | $56.0M | $44.0M | $57.0M |
| Proceeds from disposal of certain strategic investments | $40.0M | $124.0M | $45.0M | $149.0M | $2.0M | $31.0M | $84.0M | $56.0M |
| Debt and Equity Securities, Realized Losses | $230.0M | $27.0M | $144.0M | $90.0M | $12.0M | $7.0M | $77.0M | $52.0M |
| Accretion (Amortization) of Discounts and Premiums, Investments | — | — | — | $21.0M | — | — | — | $47.0M |
| Payments for Repurchase of Common Stock for Restricted Stock Tax Liabilities | $1.0M | $83.0M | $0.0 | $54.0M | $1.0M | $37.0M | $0.0 | $43.0M |
| Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Period Increase (Decrease), Including Exchange Rate Effect and Discontinued Operation | — | — | — | $53.0M | — | — | — | $41.0M |
| Debt Securities, Available-for-Sale, Realized Loss | $225.0M | $8.0M | $132.0M | $84.0M | $9.0M | $4.0M | $73.0M | $41.0M |
| Hybrid securities | $3.0M | $20.0M | — | $3.0M | $11.0M | $3.0M | $1.0M | -$27.0M |
| Operating Lease Payments | $21.0M | $20.0M | $21.0M | $22.0M | $23.0M | $23.0M | $23.0M | $26.0M |
| Right Of Use Asset Obtained In Exchange For Operating Lease Liability | $19.0M | $27.0M | $22.0M | $40.0M | $23.0M | $20.0M | $8.0M | $23.0M |
| Equity securities: | $0.0 | $14.0M | $7.0M | $37.0M | $4.0M | $12.0M | $54.0M | $21.0M |
| Tax Benefit of Reclassification for Sale of Securities | -$46.0M | $7.0M | -$21.0M | -$6.0M | $3.0M | $1.0M | $24.0M | $20.0M |
| Tax expense (benefit) of other comprehensive income (loss), reclassification adjustment from AOCI for sale of securities | -$46.0M | $7.0M | -$21.0M | -$6.0M | $3.0M | $1.0M | $24.0M | $20.0M |
| Tax effect | -$46.0M | $7.0M | -$21.0M | -$6.0M | $3.0M | $1.0M | $24.0M | $20.0M |
| Dispositions of property, plant, and equipment | $42.0M | $20.0M | $12.0M | $13.0M | $39.0M | $18.0M | $10.0M | $14.0M |
| Equity Securities, FV-NI, Realized Loss | $5.0M | $19.0M | $12.0M | $6.0M | $3.0M | $3.0M | $4.0M | $11.0M |
| Investment expenses | $7.0M | $7.0M | $9.0M | $7.0M | $9.0M | $10.0M | $8.0M | $8.0M |
| Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Gain Loss Included In Earnings1 | $0.0 | $0.0 | $0.0 | $0.0 | $0.0 | $0.0 | $0.0 | $7.0M |
| Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Sales | $0.0 | $0.0 | $0.0 | $0.0 | $0.0 | $0.0 | $0.0 | $5.0M |
| Service businesses profit (loss) | -$8.0M | -$9.0M | — | -$6.0M | -$6.0M | -$6.0M | — | -$5.0M |
| Gain Loss On Sale Of Property Plant Equipment | -$1.0M | $1.0M | -$15.0M | -$3.0M | — | -$1.0M | -$14.0M | -$3.0M |
| Add: dilutive effect of potential common shares (in shares) | $2.0M | $2.0M | — | $1.7M | $1.6M | $1.7M | — | $1.3M |
| Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Settlements | $1.0M | $1.0M | -$2.0M | -$6.0M | -$1.0M | -$2.0M | -$1.0M | -$1.0M |
| Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Period Increase (Decrease) | $12.0M | $0.0 | $0.0 | $14.0M | $0.0 | $0.0 | $4.0M | -$1.0M |
| Increase (Decrease) in Prepaid Reinsurance Premiums | $81.0M | -$67.0M | $125.0M | -$43.0M | -$43.0M | -$48.0M | -$18.0M | $1.0M |
| Number of reportable segments | — | — | — | 0.50 | 0.50 | 0.50 | 0.50 | 2.00 |
| Effective tax rates | $0.2 | $0.2 | $0.0 | $0.2 | $0.2 | $0.2 | — | $0.2 |
| Common Stock Dividends Per Share Declared | $0.1 | $0.1 | $4.6 | $0.1 | $0.1 | $0.1 | $13.6 | $0.1 |
| Common Stock Dividends Per Share | $0.1 | $0.1 | $4.6 | $0.1 | $0.1 | $0.1 | $13.6 | $0.1 |
| Dividends per share declared | $0.1 | $0.1 | $4.6 | $0.1 | $0.1 | $0.1 | $13.6 | $0.1 |
| Dividends per share declared | $0.1 | $0.1 | $4.6 | $0.1 | $0.1 | $0.1 | $13.6 | $0.1 |
| Common Stock Dividends Per Share Declared | $0.1 | $0.1 | $4.6 | $0.1 | $0.1 | $0.1 | $13.6 | $0.1 |
| Dividends declared (in dollars per share) | $0.1 | $0.1 | $4.6 | $0.1 | $0.1 | $0.1 | $13.6 | $0.1 |
| Common Stock Dividends Per Share Declared | $0.1 | $0.1 | $4.6 | $0.1 | $0.1 | $0.1 | $13.6 | $0.1 |
| Common Stock Dividends Per Share Declared | $0.1 | $0.1 | $4.6 | $0.1 | $0.1 | $0.1 | $13.6 | $0.1 |
| Income Taxes Paid, Net | $646.3M | $646.3M | $646.3M | $776.8M | $776.8M | $776.8M | $776.8M | — |
| Advertising costs | $1.0B | $1.0B | $1.0B | $1.3B | $1.3B | $1.3B | $1.3B | — |
| Pre-tax stock-based compensation cost | $30.5M | $30.5M | $30.5M | $33.0M | $33.0M | $33.0M | $33.0M | — |
| Cash and non-cash dividends paid to parent company | $916.8M | $916.8M | $916.8M | $2.5B | $2.5B | $2.5B | $2.5B | — |
| Ceded Premiums Earned | $342.5M | $342.5M | $342.5M | $296.5M | $296.5M | $296.5M | $296.5M | — |
| Ceded Premiums Written | $367.3M | $367.3M | $367.3M | $258.5M | $258.5M | $258.5M | $258.5M | — |
| Current Federal, State and Local, Tax Expense (Benefit) | $576.3M | $576.3M | $576.3M | $779.3M | $779.3M | $779.3M | $779.3M | — |
| Federal | $561.8M | $561.8M | $561.8M | $760.5M | $760.5M | $760.5M | $760.5M | — |
| Credit losses on securities without previous credit losses | $0.0 | $0.0 | $0.0 | $0.0 | $0.0 | $0.0 | $0.0 | $0.0 |
| Debt Securities, Available-for-Sale, Allowance for Credit Loss, Writeoff | $0.0 | $0.0 | $0.0 | $0.0 | $0.0 | $0.0 | $0.0 | $0.0 |
| Federal | -$17.5M | -$17.5M | -$17.5M | -$49.8M | -$49.8M | -$49.8M | -$49.8M | — |
| Deferred Federal, State and Local, Tax Expense (Benefit) | -$18.0M | -$18.0M | -$18.0M | -$50.5M | -$50.5M | -$50.5M | -$50.5M | — |
| State | -$500.0K | -$500.0K | -$500.0K | -$750.0K | -$750.0K | -$750.0K | -$750.0K | — |
| Direct premiums earned | $18.0B | $18.0B | $18.0B | $20.7B | $20.7B | $20.7B | $20.7B | — |
| Direct premiums written | $19.0B | $19.0B | $19.0B | $21.1B | $21.1B | $21.1B | $21.1B | — |
| Share-Based Payment Arrangement, Expense, Tax Benefit | $4.3M | $4.3M | $4.3M | $4.5M | $4.5M | $4.5M | $4.5M | — |
| Net Transfers In (Out) | $0.0 | $0.0 | $0.0 | $0.0 | $0.0 | $0.0 | $0.0 | $0.0 |
| Purchases | $0.0 | $0.0 | $2.0M | $8.0M | $0.0 | $0.0 | $0.0 | $0.0 |
| Federal taxes | $635.0M | $635.0M | $635.0M | $755.5M | $755.5M | $755.5M | $755.5M | — |
| State taxes | $11.3M | $11.3M | $11.3M | $21.3M | $21.3M | $21.3M | $21.3M | — |
| Income taxes paid | $1.4B | $634.0M | $600.0M | $0.0 | $1.6B | $669.0M | — | — |
| Income Taxes Paid, Net | $646.3M | $646.3M | $646.3M | $776.8M | $776.8M | $776.8M | $776.8M | — |
| Service businesses | -$8.3M | -$8.3M | -$8.3M | -$6.0M | -$6.0M | -$6.0M | -$6.0M | — |
| Number of operating segments | $0.5 | $0.5 | $0.5 | $0.5 | $0.5 | $0.5 | $0.5 | — |
| Number of Subsets of Business Data Reviewed | 100.00 | 100.00 | 100.00 | 100.00 | 100.00 | 100.00 | 100.00 | — |
| other-than-temporary Impairment Loss, uncollectible, Available-for-sale | $250.0K | $250.0K | $250.0K | $250.0K | $250.0K | $250.0K | $250.0K | — |
| Premiums Written, Net | $18.6B | $18.6B | $18.6B | $20.8B | $20.8B | $20.8B | $20.8B | — |
| Statutory net income | $1.9B | $1.9B | $1.9B | $2.7B | $2.7B | $2.7B | $2.7B | — |
| Amortization of deferred policy acquisition costs | $1.3B | $1.3B | $1.3B | $1.5B | $1.5B | $1.5B | $1.5B | — |
| Benefits, claims, losses, and settlement expenses | $12.3B | $12.3B | $12.3B | $13.5B | $13.5B | $13.5B | $13.5B | — |
| Net investment income | $700.8M | $700.8M | $700.8M | $887.3M | $887.3M | $887.3M | $887.3M | — |
| Other operating expenses | $2.4B | $2.4B | $2.4B | $3.1B | $3.1B | $3.1B | $3.1B | — |
| Premium revenue | $17.7B | $17.7B | $17.7B | $20.4B | $20.4B | $20.4B | $20.4B | — |
| Net premiums written | $18.6B | $18.6B | $18.6B | $20.8B | $20.8B | $20.8B | $20.8B | — |
| Total Other-than-temporary Impairment Loss, other assets | $0.0 | $0.0 | $0.0 | $0.0 | $0.0 | $0.0 | $0.0 | — |