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Medical Costs Payable, Incurred and Paid Medical Cost Development (Details) - Health Insurance Product Line [Member] - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Net Incurred Medical Costs	$ 453,210
Net Cumulative Medical Payments	(420,944)
Net remaining outstanding liabilities prior to 2022	129
Total Medical costs payable	32,395
Short-duration Insurance Contracts, Accident Year 2022 [Member]
Net Incurred Medical Costs	210,476	$ 211,252
Net Cumulative Medical Payments	(209,564)	$ (184,049)
Short-duration Insurance Contracts, Accident Year 2023 [Member]
Net Incurred Medical Costs	242,734
Net Cumulative Medical Payments	$ (211,380)

X

- Definition

Amount, after reinsurance, of paid claims and allocated claim adjustment expense used in claims development for short-duration insurance contracts. Excludes unallocated claim adjustment expense.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 50
-Paragraph 4B
-Subparagraph (b)
-SubTopic 40
-Topic 944
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480081/944-40-50-4B

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X

- Definition

Undiscounted amount, after reinsurance, of incurred claims and allocated claim adjustment expense used in claims development for short-duration insurance contracts. Excludes unallocated claim adjustment expense.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 50
-Paragraph 4B
-Subparagraph (a)
-SubTopic 40
-Topic 944
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480081/944-40-50-4B

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- Definition

Undiscounted amount, after reinsurance, of the liability for unpaid claims and allocated claim adjustment expense for short-duration insurance contracts. Excludes unallocated claim adjustment expense.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 50
-Paragraph 4B
-SubTopic 40
-Topic 944
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480081/944-40-50-4B

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-Section 50
-Paragraph 4C
-SubTopic 40
-Topic 944
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480081/944-40-50-4C

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- Definition

Undiscounted amount, after reinsurance, of the liability for unpaid claims and allocated claim adjustment expense for short-duration insurance contracts for accident years not separately presented in claim development information. Excludes unallocated claim adjustment expense.

+ References

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-Paragraph 4B
-SubTopic 40
-Topic 944
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480081/944-40-50-4B

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