| Fiscal period | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 |
| Period End Date | 12/31/2025 | 12/31/2024 | 12/31/2023 | 12/31/2022 | 12/31/2021 | 12/31/2020 | 12/31/2019 | 12/31/2018 | 12/31/2017 | 12/31/2016 |
| Short-duration contracts:Direct | -- | -- | -- | -- | -- | -- | -- | -- | 28,654.00 | 27,496.00 |
| Short-duration contracts:Assumed | -- | -- | -- | -- | -- | -- | -- | -- | 199.00 | 247.00 |
| Long-durationcontracts:Direct | -- | -- | -- | -- | -- | -- | -- | -- | 3,748.00 | 3,259.00 |
| Long-durationcontracts:Assumed | -- | -- | -- | -- | -- | -- | -- | -- | 130.00 | 137.00 |
| Short-duration contracts:Ceded | -- | -- | -- | -- | -- | -- | -- | -- | 150.00 | 229.00 |
| Ceded:Individual life insuranceand annuity business sold | -- | -- | -- | -- | -- | -- | -- | -- | 143.00 | 153.00 |
| Ceded:Other | -- | -- | -- | -- | -- | -- | -- | -- | 131.00 | 131.00 |
| Premiums | 40,261.00 | 45,996.00 | 44,237.00 | 39,915.00 | 41,154.00 | 42,627.00 | 39,714.00 | 36,113.00 | 32,307.00 | 30,626.00 |
| Realized investment gains (losses) | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Realized investment gains (losses): Other than temporary impairments on debt securities, net | -- | -- | -- | -- | -- | -- | -- | -- | (27.00) | (35.00) |
| Realized investment gains (losses): Other realized investment gains (losses) | -- | -- | -- | -- | -- | -- | -- | -- | 264.00 | 204.00 |
| Net investment income | 1,046.00 | 973.00 | 1,166.00 | 1,155.00 | 1,549.00 | 1,244.00 | 1,390.00 | 1,480.00 | 1,226.00 | 1,147.00 |
| Fees and Other Revenues | 16,921.00 | 14,790.00 | 12,619.00 | 10,880.00 | 9,962.00 | 8,761.00 | 9,363.00 | 5,578.00 | 4,867.00 | 4,760.00 |
| Other Revenues | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Pharmacy revenues | 216,672.00 | 185,362.00 | 137,243.00 | 128,566.00 | 121,413.00 | 107,769.00 | 103,099.00 | 5,479.00 | 2,979.00 | 2,966.00 |
| Total Revenues | 274,900.00 | 247,121.00 | 195,265.00 | 180,516.00 | 174,078.00 | 160,401.00 | 153,566.00 | 48,650.00 | 41,616.00 | 39,668.00 |
| Medical Costs and Other Benefit Expenses | 34,349.00 | 38,648.00 | 36,287.00 | 32,206.00 | 33,562.00 | 32,710.00 | 30,819.00 | 27,528.00 | 19,967.00 | 19,009.00 |
| Other benefit expenses | -- | -- | -- | -- | -- | -- | -- | -- | 5,439.00 | 5,477.00 |
| Guaranteed minimum income benefits expense | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Policy acquisition expenses | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Amortization of other acquired intangible assets | 1,743.00 | 1,703.00 | 1,819.00 | 1,876.00 | 1,998.00 | 1,982.00 | 2,949.00 | 235.00 | 115.00 | 151.00 |
| Selling, general and administrative expenses excluding special items | 14,617.00 | 14,844.00 | 14,822.00 | 13,186.00 | 13,030.00 | 14,072.00 | 14,053.00 | 11,934.00 | -- | -- |
| Other operating expenses | -- | -- | -- | -- | -- | -- | -- | -- | (10,033.00) | (9,584.00) |
| Mail order pharmacy costs of goods sold | (214,991.00) | (182,509.00) | (133,801.00) | (124,834.00) | (117,553.00) | (103,484.00) | (97,668.00) | (4,793.00) | (2,456.00) | (2,468.00) |
| Income from operations | 9,200.00 | 9,417.00 | 8,536.00 | 8,414.00 | 7,935.00 | 8,153.00 | 8,077.00 | 4,160.00 | -- | -- |
| Interest expense and other | 1,408.00 | 1,435.00 | 1,446.00 | 1,228.00 | 1,208.00 | 1,438.00 | 1,682.00 | 498.00 | -- | -- |
| Debt extinguishment charges | -- | -- | -- | -- | (141.00) | (199.00) | (2.00) | -- | -- | -- |
| Net realized investment gains (losses) | (24.00) | (2,737.00) | (78.00) | (495.00) | 196.00 | 149.00 | 177.00 | (81.00) | -- | -- |
| Gain (loss) on sale of business | 13.00 | 24.00 | (1,499.00) | 1,662.00 | -- | 4,203.00 | -- | -- | -- | -- |
| Income from continuing operations before income taxes | 7,781.00 | 5,269.00 | 5,513.00 | 8,353.00 | 6,782.00 | 10,868.00 | 6,570.00 | 3,581.00 | 3,606.00 | 2,979.00 |
| Current taxes:U.S. income | 807.00 | 1,167.00 | 1,459.00 | 1,679.00 | 1,268.00 | -- | 1,476.00 | -- | -- | 935.00 |
| Current taxes:Foreign income | 191.00 | 248.00 | 161.00 | 219.00 | 207.00 | -- | 173.00 | -- | -- | 95.00 |
| Current taxes:State income | 169.00 | 171.00 | 180.00 | 189.00 | 112.00 | -- | 114.00 | -- | -- | 32.00 |
| Deferred taxes (benefits):U.S. income | (69.00) | (142.00) | (533.00) | (283.00) | (167.00) | -- | (236.00) | -- | -- | 69.00 |
| Deferred taxes (benefits):Foreign income | 447.00 | 64.00 | (1,046.00) | (28.00) | 69.00 | -- | 16.00 | -- | -- | 9.00 |
| Deferred taxes (benefits):State income | (52.00) | (17.00) | (80.00) | (169.00) | (122.00) | -- | (93.00) | -- | -- | (4.00) |
| Provision for income taxes | 1,493.00 | 1,491.00 | 141.00 | 1,607.00 | 1,367.00 | 2,379.00 | 1,450.00 | 935.00 | 1,374.00 | 1,136.00 |
| Income from continuing operations | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Income from discontinued operations | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Income before Cumulative Effect of Accounting Change | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Cumulative effect of accounting change, net of taxes | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Consolidated Net income | 6,288.00 | 3,778.00 | 5,372.00 | 6,746.00 | 5,415.00 | 8,489.00 | 5,120.00 | 2,646.00 | 2,232.00 | 1,843.00 |
| Net income attributable to noncontrolling interest | 331.00 | 344.00 | 208.00 | 78.00 | 50.00 | 31.00 | 16.00 | 9.00 | (5.00) | (24.00) |
| Net income (loss) available to common shareholders | 5,957.00 | 3,434.00 | 5,164.00 | 6,668.00 | 5,365.00 | 8,458.00 | 5,104.00 | 2,637.00 | 2,237.00 | 1,867.00 |
| BASIC:Income from continuing operations | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Basic:Income from discontinued operations | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Basic:Cumulative effect of accounting change, net of taxes | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| BASIC:Net income | 22.33 | 12.25 | 17.57 | 21.54 | 15.87 | 23.17 | 13.58 | 10.69 | 8.92 | 7.31 |
| DILUTED:Income from continuing operations | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Diluted:Income from discontinued operations | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Diluted:Cumulative effect of accounting change, net of taxes | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| DILUTED:Net income | 22.18 | 12.12 | 17.39 | 21.30 | 15.73 | 22.96 | 13.44 | 10.54 | 8.77 | 7.19 |
| Weighted Average Shares Outstanding (Basic) | 266.74 | 280.29 | 293.89 | 309.55 | 337.96 | 364.98 | 375.92 | 246.65 | 250.89 | 255.36 |
| Weighted Average Shares Outstanding (Diluted) | 268.56 | 283.22 | 296.88 | 313.07 | 340.97 | 368.39 | 379.82 | 250.23 | 255.07 | 259.65 |