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v3.24.0.1

Segment Reporting - Reconciliation of Financial Measures of Segments to Consolidated Totals (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Segment Reporting Information [Line Items] |  |  |
Revenues from external customers | $ 356,623 | $ 321,629 | $ 290,912
Net investment income (loss) | 1,153 | 838 | 1,199
Total revenues | 357,776 | 322,467 | 292,111
Adjusted operating income (loss) | 17,534 | 18,037 | 17,227
Depreciation and amortization | 4,366 | 4,224 | 4,486
Operating Segments | Health Care Benefits |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues from external customers | 104,800 | 90,798 | 81,457
Net investment income (loss) | 765 | 476 | 586
Total revenues | 105,646 | 91,350 | 82,119
Adjusted operating income (loss) | 5,577 | 6,338 | 5,110
Depreciation and amortization | 1,572 | 1,579 | 1,811
Operating Segments | Health Services |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues from external customers | 174,018 | 157,968 | 143,912
Net investment income (loss) | (1) | 0 | 0
Total revenues | 186,843 | 169,576 | 153,892
Adjusted operating income (loss) | 7,312 | 6,781 | 6,492
Depreciation and amortization | 880 | 519 | 505
Copayments | 13,700 | 12,600 | 11,600
Operating Segments | Pharmacy & Consumer Wellness |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues from external customers | 77,748 | 72,739 | 65,418
Net investment income (loss) | (5) | (44) | 17
Total revenues | 116,763 | 108,596 | 101,620
Adjusted operating income (loss) | 5,963 | 6,531 | 7,260
Depreciation and amortization | 1,549 | 1,889 | 1,955
Intersegment Eliminations |  |  |
Segment Reporting Information [Line Items] |  |  |
Intersegment revenues | (51,927) | (47,585) | (46,241)
Net investment income (loss) | 0 | 0 | 0
Total revenues | (51,927) | (47,585) | (46,241)
Adjusted operating income (loss) | 0 | 0 | 0
Depreciation and amortization | 0 | 0 | 0
Intersegment Eliminations | Health Care Benefits |  |  |
Segment Reporting Information [Line Items] |  |  |
Intersegment revenues | 81 | 76 | 76
Intersegment Eliminations | Health Services |  |  |
Segment Reporting Information [Line Items] |  |  |
Intersegment revenues | 12,826 | 11,608 | 9,980
Intersegment Eliminations | Pharmacy & Consumer Wellness |  |  |
Segment Reporting Information [Line Items] |  |  |
Intersegment revenues | 39,020 | 35,901 | 36,185
Corporate/ Other | Corporate/ Other |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues from external customers | 57 | 124 | 125
Net investment income (loss) | 394 | 406 | 596
Total revenues | 451 | 530 | 721
Adjusted operating income (loss) | (1,318) | (1,613) | (1,635)
Depreciation and amortization | $ 365 | $ 237 | $ 215

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