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Business Combinations (Narrative) (Details) - USD ($) $ in Millions |  | 12 Months Ended
--- | --- | ---
Oct. 03, 2022 | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Business Combination, Separately Recognized Transactions [Line Items] |  |  |  |
Cash received from dispositions |  | $ 3,414 | $ 15 | $ 221
Change Healthcare Claim Editing Business |  |  |  |
Business Combination, Separately Recognized Transactions [Line Items] |  |  |  |
Cash received from dispositions |  | 2,200 |  |
Other Dispositions |  |  |  |
Business Combination, Separately Recognized Transactions [Line Items] |  |  |  |
Cash received from dispositions |  | 1,200 |  |
Carrying Value of Disposition |  | 600 |  |
Change Healthcare |  |  |  |
Business Combination, Separately Recognized Transactions [Line Items] |  |  |  |
Business Combination, Consideration Transferred | $ 13,900 |  |  |
Other Acquisitions |  |  |  |
Business Combination, Separately Recognized Transactions [Line Items] |  |  |  |
Business Combination, Consideration Transferred |  | $ 8,800 |  |

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- Definition The cash inflow associated with the amount received from the sale of a portion of the company's business, for example a segment, division, branch or other business, during the period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 12 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3179-108585 + Details
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