Aggregate carrying amount of the estimated litigation liability for known or estimated probable loss from litigation, which may include attorneys' fees and other litigation costs.

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- Definition

Carrying amount of reserve for known or estimated probable loss from litigation, which may include attorneys' fees and other litigation costs, which is expected to be paid within one year of the date of the statement of financial position.

+ References

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- Definition

Carrying amount of estimated litigation liability for known or estimated probable loss from litigation, which may include attorneys' fees and other litigation costs, which is expected to be paid after one year or beyond the normal operating cycle, if longer.

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- Definition

Amount awarded to other party in judgment or settlement of litigation.

+ References

No definition available.

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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
-Topic 460
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The total number of new claims filed pertaining to a loss contingency during the period.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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-SubTopic 20
-Name Accounting Standards Codification
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- Definition

The amount of cash paid for the settlement of litigation or for other legal issues during the period.

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Litigation Settlement, Payment Period

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No definition available.

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Litigation Settlement, Percentage Of Litigating Subdivisions

+ References

No definition available.

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- Definition

Litigation Settlement, Period

+ References

No definition available.

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Commitment and contingencies (Details) $ in Millions			1 Months Ended			3 Months Ended
Commitment and contingencies (Details) $ in Millions	Nov. 02, 2022 USD ($)	May 05, 2022 USD ($)	Dec. 31, 2023 USD ($)	Aug. 31, 2022 USD ($)	Dec. 31, 2017 case	Nov. 30, 2023 USD ($)	Dec. 31, 2020 case	Aug. 31, 2023 USD ($)	Aug. 23, 2023 USD ($)	Jun. 08, 2023
Loss Contingencies [Line Items]
Accrued litigation obligations						$ 6,366		$ 6,261
Settlement Frameworks \| Pending Litigation
Loss Contingencies [Line Items]
Estimated litigation liability						6,500
Accrued litigation obligations	$ 754
Litigation settlement, period	6 years
Settlement Frameworks \| Settled Litigation
Loss Contingencies [Line Items]
Estimated litigation liability						6,900
Accrued litigation obligations						6,300
Estimated litigation liability, current						649
Litigation Settlement, Percentage Of Litigating Subdivisions										99.50%
Settling States \| Pending Litigation
Loss Contingencies [Line Items]
Estimated litigation liability	$ 4,800
Litigation settlement, period	15 years
Settling Tribes \| Pending Litigation
Loss Contingencies [Line Items]
Estimated litigation liability	$ 155
Litigation settlement, period	15 years
Consolidated Cases in State of Florida \| Settled Litigation
Loss Contingencies [Line Items]
Litigation settlement, amount awarded to other party		$ 683
Estimated litigation liability								$ 683
Accrued litigation obligations		$ 620
Litigation settlement, period		18 years
Estimated litigation liability, current		$ 63
Ohio Combined Cases \| Pending Litigation
Loss Contingencies [Line Items]
Litigation settlement, amount awarded to other party				$ 651
Loss Contingency, New Claims Filed, Number \| case					2
Litigation Settlement, Period				15 years
Rite Aid Merger
Loss Contingencies [Line Items]
Loss Contingency, New Claims Filed, Number \| case							2
Rite Aid Merger \| Pending Litigation
Loss Contingencies [Line Items]
Estimated litigation liability									$ 193
Humana \| Settled Litigation
Loss Contingencies [Line Items]
Litigation settlement, amount awarded to other party						642
Accrued litigation obligations						$ 360
Humana \| Settled Litigation \| Subsequent Event
Loss Contingencies [Line Items]
Payments for legal settlements			$ 150