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.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 450
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
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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.

+ References

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- Definition

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

+ References

No definition available.

+ Details

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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
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Publisher FASB
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 450
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Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition

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
-Topic 450
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
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-Subparagraph (a)
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Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition

Litigation Settlement, Payment Period

+ References

No definition available.

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- Definition

Litigation Settlement, Percentage Of Litigating Subdivisions

+ References

No definition available.

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- Details

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Commitment and contingencies (Details) $ in Millions				1 Months Ended		9 Months Ended
Commitment and contingencies (Details) $ in Millions	Nov. 02, 2022 USD ($)	Jun. 29, 2022 USD ($)	May 05, 2022 USD ($)	Aug. 31, 2022 USD ($)	Dec. 31, 2017 claim	May 31, 2023 USD ($)	Jun. 08, 2023	Nov. 30, 2022 USD ($)
Loss Contingencies [Line Items]
Accrued litigation obligations				$ 551.0		$ 6,407.0
Washtenaw County Employees Retirement System \| Settled Litigation
Loss Contingencies [Line Items]
Litigation settlement, amount awarded to other party		$ 105.0
Settlement Frameworks \| Pending Litigation
Loss Contingencies [Line Items]
Litigation settlement, period	6 years
Accrued litigation obligations	$ 754.0
Estimated litigation liability								$ 6,500.0
Settlement Frameworks \| Settled Litigation
Loss Contingencies [Line Items]
Accrued litigation obligations						6,400.0
Estimated litigation liability, current						1,000.0
Estimated litigation liability						7,400.0
Settlement Frameworks \| Settled Litigation \| Subsequent Event
Loss Contingencies [Line Items]
Percentage of litigating subdivisions							99.50%
Settling States \| Pending Litigation
Loss Contingencies [Line Items]
Litigation settlement, period	15 years
Estimated litigation liability	$ 4,800.0
Settling Tribes \| Pending Litigation
Loss Contingencies [Line Items]
Litigation settlement, period	15 years
Estimated litigation liability	$ 155.0
Consolidated Cases in State of Florida \| Settled Litigation
Loss Contingencies [Line Items]
Litigation settlement, amount awarded to other party			$ 683.0
Litigation settlement, period			18 years
Accrued litigation obligations			$ 620.0
Estimated litigation liability, current			$ 63.0
Estimated litigation liability				683.0
Ohio Combined Cases \| Pending Litigation
Loss Contingencies [Line Items]
Litigation settlement, amount awarded to other party				$ 651.0
Litigation settlement, period				15 years
Number of cases \| claim					2
Humana \| Pending Litigation
Loss Contingencies [Line Items]
Estimated litigation liability						304.0
Humana \| Settled Litigation
Loss Contingencies [Line Items]
Litigation settlement, amount awarded to other party						$ 642.0