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Goodwill and Other Intangibles - Goodwill (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022
Goodwill [Roll Forward] |  |
Balance, beginning of the period | $ 78,150 | $ 79,121
Segment realignment | 0 |
Acquisitions | 13,122 |
Balance, end of the period | 91,272 | 78,150
Disposal Group, Disposed of by Sale, Not Discontinued Operations |  |
Goodwill [Roll Forward] |  |
Divestitures |  | (971)
Health Care Benefits |  |
Goodwill [Roll Forward] |  |
Balance, beginning of the period | 44,159 | 45,130
Segment realignment | (109) |
Acquisitions | 2,594 |
Balance, end of the period | 46,644 | 44,159
Health Care Benefits | Disposal Group, Disposed of by Sale, Not Discontinued Operations |  |
Goodwill [Roll Forward] |  |
Divestitures |  | (971)
Health Services |  |
Goodwill [Roll Forward] |  |
Balance, beginning of the period | 23,615 | 23,615
Segment realignment | 109 |
Acquisitions | 10,342 |
Balance, end of the period | 34,066 | 23,615
Health Services | Disposal Group, Disposed of by Sale, Not Discontinued Operations |  |
Goodwill [Roll Forward] |  |
Divestitures |  | 0
Pharmacy & Consumer Wellness |  |
Goodwill [Roll Forward] |  |
Balance, beginning of the period | 10,376 | 10,376
Segment realignment | 0 |
Acquisitions | 186 |
Balance, end of the period | $ 10,562 | 10,376
Pharmacy & Consumer Wellness | Disposal Group, Disposed of by Sale, Not Discontinued Operations |  |
Goodwill [Roll Forward] |  |
Divestitures |  | $ 0

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