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
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

Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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The amount of identifiable intangible assets recognized as of the acquisition date.

+ References

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