| Dec 31, 2018 | Dec 31, 2019 | Dec 31, 2020 | Dec 31, 2021 | Dec 31, 2022 | Dec 31, 2023 | Dec 31, 2024 |
|---|
| Net income | 2,646 | 5,120 | 8,489 | 5,415 | 6,746 | 5,372 | 3,778 |
|---|
| Depreciation and amortization | 695 | 3,651 | 2,802 | 2,923 | 2,937 | 3,035 | 2,775 |
|---|
| Investment losses, net | - | - | - | - | - | - | -2,737 |
|---|
| Deferred income tax benefit | 101 | 313 | 386 | 220 | 480 | 1,659 | 95 |
|---|
| Net (gain) loss on sale of businesses | - | - | 4,203 | - | 1,662 | -1,499 | 24 |
|---|
| Debt extinguishment gain | - | -2 | -199 | -141 | - | - | - |
|---|
| Accounts receivable, net | -705 | 713 | 1,496 | 2,843 | 2,237 | 1,663 | 7,369 |
|---|
| Inventories | 107 | -149 | 504 | 557 | 1,055 | 868 | 1,032 |
|---|
| Reinsurance recoverable and Other assets | 234 | 277 | -230 | 389 | 38 | 539 | 485 |
|---|
| Insurance liabilities | 560 | 575 | 841 | 967 | 291 | 584 | -591 |
|---|
| Pharmacy and other service costs payable | -842 | -192 | 2,891 | 1,961 | 1,760 | 2,030 | 8,757 |
|---|
| Accounts payable and Accrued expenses and other liabilities | 332 | 1,343 | 1,346 | -77 | 1,574 | 3,481 | 1,138 |
|---|
| Other, net | -272 | -559 | -597 | -333 | -325 | -463 | -774 |
|---|
| NET CASH PROVIDED BY OPERATING ACTIVITIES | 3,770 | 9,485 | 10,350 | 7,191 | 8,656 | 11,813 | 10,363 |
|---|
| Debt securities and equity securities | - | 3,487 | 2,283 | 2,030 | 1,744 | 1,078 | 856 |
|---|
| Debt securities and equity securities | - | 1,825 | 1,519 | 1,628 | 1,327 | 972 | 839 |
|---|
| Commercial mortgage loans | 215 | 199 | 19 | 180 | 98 | 186 | 188 |
|---|
| Proceeds from Sale and Maturity of Other Investments | 734 | 1,311 | 1,575 | 1,936 | 1,039 | 586 | 752 |
|---|
| Debt securities and equity securities | - | - | 4,765 | 3,553 | 2,756 | 4,334 | 1,386 |
|---|
| Commercial mortgage loans | 312 | 307 | 113 | 327 | 161 | 118 | 54 |
|---|
| Other (primarily short-term and other long-term investments) | 1,189 | 1,753 | 1,924 | 2,554 | 1,563 | 1,205 | 1,309 |
|---|
| Property and equipment purchases, net | - | - | 1,094 | 1,154 | 1,295 | 1,573 | 1,406 |
|---|
| Acquisitions, net of cash acquired | 24,455 | 153 | 139 | 1,833 | - | 447 | 131 |
|---|
| Divestitures, net of cash sold | - | - | 5,592 | -61 | 4,835 | 13 | 521 |
|---|
| Renewable energy tax credit equity investments | - | - | - | - | - | - | 1,030 |
|---|
| Other, net | 12 | 11 | -23 | -97 | 170 | 332 | -58 |
|---|
| NET CASH (USED IN) PROVIDED BY INVESTING ACTIVITIES | -26,378 | -734 | 2,976 | -3,611 | 3,098 | -5,174 | -2,102 |
|---|
| Additions to Contract Holders Funds | 1,040 | 955 | 1,023 | 153 | 164 | 167 | 166 |
|---|
| Withdrawals and benefit payments from contractholder deposit funds | 1,151 | 1,097 | 979 | 168 | 220 | 223 | 228 |
|---|
| Net change in short-term debt | - | - | 60 | 975 | -2,059 | 1,198 | -402 |
|---|
| Payments for debt extinguishment | - | 3 | 212 | 136 | - | - | - |
|---|
| Repayment of long-term debt | 131 | 4,491 | 8,000 | 4,578 | 500 | 2,967 | 3,000 |
|---|
| Proceeds from Issuance of Long-Term Debt | 22,856 | - | 3,465 | 4,260 | - | 1,491 | 4,462 |
|---|
| Repurchase of common stock | 342 | 1,987 | 4,042 | 7,742 | 7,607 | 2,284 | 7,034 |
|---|
| Issuance of common stock | 68 | 224 | 376 | 326 | 389 | 187 | 305 |
|---|
| Common stock dividend paid | - | - | - | 1,341 | 1,384 | 1,450 | 1,567 |
|---|
| Other, net | -312 | -107 | -175 | 39 | -23 | -413 | -349 |
|---|
| NET CASH USED IN FINANCING ACTIVITIES | 23,515 | -7,187 | -8,533 | -8,212 | -11,240 | -4,294 | -7,647 |
|---|
| Effect of foreign currency rate changes on cash, cash equivalents and restricted cash | - | -8 | 41 | -65 | -86 | 16 | -20 |
|---|
| Net increase in cash, cash equivalents and restricted cash | - | 1,556 | 4,834 | -4,697 | 428 | 2,361 | 594 |
|---|
| Income Taxes Paid, Net | 1,019 | 1,776 | 1,837 | 2,240 | 1,850 | 1,471 | 898 |
|---|
| Interest paid | 267 | 1,645 | 1,439 | 1,253 | 1,229 | 1,330 | 1,342 |
|---|