MEDICARE PART D (Details) - USD ($) $ in Millions |
Mar. 31, 2024 |
Dec. 31, 2023 |
|---|---|---|
| Segment Reporting Information [Line Items] | ||
| Other current assets | $ 6,264 | $ 6,631 |
| Trade accounts payable and accrued expenses | (6,504) | (6,569) |
| Other long-term assets | 3,643 | 3,377 |
| Other long-term liabilities | (1,826) | (1,662) |
| Risk Corridor Settlement | ||
| Segment Reporting Information [Line Items] | ||
| Other current assets | 100 | 224 |
| Trade accounts payable and accrued expenses | (108) | (232) |
| Net current liability | (8) | (8) |
| Other long-term assets | 293 | 17 |
| Other long-term liabilities | (81) | (77) |
| Net long-term asset (liability) | 212 | (60) |
| Total net asset (liability) | 204 | (68) |
| CMS Subsidies/ Discounts | ||
| Segment Reporting Information [Line Items] | ||
| Other current assets | 592 | 514 |
| Trade accounts payable and accrued expenses | (2,472) | (1,825) |
| Net current liability | (1,880) | (1,311) |
| Other long-term assets | 0 | 0 |
| Other long-term liabilities | 0 | 0 |
| Net long-term asset (liability) | 0 | 0 |
| Total net asset (liability) | $ (1,880) | $ (1,311) |