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.

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

Name:	us-gaap_ShortdurationInsuranceContractsCumulativePaidClaimsAndAllocatedClaimAdjustmentExpenseNet
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Medical Claims and Benefits Payable - Cumulative Paid Claims and Allocated Claims Adjustment Expenses (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Product Information [Line Items]
Claims paid	$ 76,560
Benefit Year 2021
Product Information [Line Items]
Claims paid	23,894	$ 23,871	$ 21,148
Benefit Year 2022
Product Information [Line Items]
Claims paid	27,051	$ 24,345
Benefit Year 2023
Product Information [Line Items]
Claims paid	$ 25,615