Percentage of voting equity interests acquired at the acquisition date in the business combination.

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Face (par) amount of debt instrument at time of issuance.

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The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price.

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The cash outflow associated with the purchase of or advances to an equity method investments, which are investments in joint ventures and entities in which the entity has an equity ownership interest normally of 20 to 50 percent and exercises significant influence.

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Equity Method Investments, Consideration Transferred

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Number of Co-Located Clinics

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Subsequent events (Details) $ in Millions					12 Months Ended	63 Months Ended
Subsequent events (Details) $ in Millions	Oct. 14, 2021 USD ($)	Oct. 13, 2021 co-locatedClinic	Sep. 17, 2021 USD ($)	Sep. 04, 2021 USD ($)	Aug. 31, 2021 USD ($)	Dec. 31, 2026 co-locatedClinic
VillageMD
Subsequent Event [Line Items]
Consideration transferred to acquire equity method investments					$ 750
Payments to acquire equity method investments					$ 250
VillageMD \| Forecast
Subsequent Event [Line Items]
Number of co-located clinics \| co-locatedClinic						1,000
Subsequent event \| VillageMD
Subsequent Event [Line Items]
Consideration transferred to acquire equity method investments	$ 5,200
Ownership percentage	63.00%	30.00%
Number of co-located clinics \| co-locatedClinic		600
Payments to acquire equity method investments	$ 4,000
Subsequent event \| VillageMD \| Promissory Notes
Subsequent Event [Line Items]
Face amount	$ 1,200
CareCentrix, Inc. \| Subsequent event
Subsequent Event [Line Items]
Payments to acquire business				$ 330
Controlling interest percentage				55.00%
Shields Health Solutions \| Subsequent event
Subsequent Event [Line Items]
Payments to acquire business			$ 970
Controlling interest percentage			71.00%