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Acquisitions and Assets Held for Sale - Summary of Preliminary Fair Values and Weighted Average Useful Lives for Intangible Assets Acquired (Details) - USD ($) $ in Millions | May 02, 2023 | Mar. 29, 2023
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Oak Street Health Inc. |  |
Business Acquisition [Line Items] |  |
Gross Fair Value | $ 4,233 |
Weighted Average Useful Life (years) | 18 years |
Oak Street Health Inc. | Customer Relationships |  |
Business Acquisition [Line Items] |  |
Gross Fair Value | $ 3,620 |
Weighted Average Useful Life (years) | 19 years 10 months 24 days |
Oak Street Health Inc. | Technology |  |
Business Acquisition [Line Items] |  |
Gross Fair Value | $ 143 |
Weighted Average Useful Life (years) | 3 years |
Oak Street Health Inc. | Trademarks |  |
Business Acquisition [Line Items] |  |
Gross Fair Value | $ 470 |
Weighted Average Useful Life (years) | 8 years |
Signify Health, Inc. |  |
Business Acquisition [Line Items] |  |
Gross Fair Value |  | $ 1,920
Weighted Average Useful Life (years) |  | 16 years
Signify Health, Inc. | Customer Relationships |  |
Business Acquisition [Line Items] |  |
Gross Fair Value |  | $ 1,810
Weighted Average Useful Life (years) |  | 16 years 8 months 12 days
Signify Health, Inc. | Technology |  |
Business Acquisition [Line Items] |  |
Gross Fair Value |  | $ 50
Weighted Average Useful Life (years) |  | 3 years
Signify Health, Inc. | Trademarks |  |
Business Acquisition [Line Items] |  |
Gross Fair Value |  | $ 60
Weighted Average Useful Life (years) |  | 5 years

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