Medical Claims Payable - Schedule of Reconciliation of Net Incurred Medical Claims to Benefit Expense (Details) - USD ($) $ in Millions |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Sep. 30, 2026 |
Sep. 30, 2025 |
Sep. 30, 2026 |
Sep. 30, 2025 |
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| Insurance [Abstract] | ||||
| Net incurred medical claims with medical claims payable | $ 107,094 | $ 103,923 | ||
| Performance-based risk arrangements without medical claims payable | 219 | 3,234 | ||
| Total net incurred medical claims | 107,313 | 107,157 | ||
| Quality improvement and other claims expense | 3,105 | 3,001 | ||
| Benefit expense | $ 37,779 | $ 38,140 | $ 110,418 | $ 110,158 |
| X | ||||||||||
- Definition Liability for Unpaid Claims and Claims Adjustment Expense, Incurred Claims, Payable No definition available.
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| X | ||||||||||
- Definition Liability for Unpaid Claims and Claims Adjustment Expense, Incurred Claims, Performance-based Arrangements, without Medical Claims Payable No definition available.
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| X | ||||||||||
- References No definition available.
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| X | ||||||||||
- Definition Amount, after effects of reinsurance, of expense (reversal of expense) for claims incurred and costs incurred in the claim settlement process. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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| X | ||||||||||
- Definition Amount, after effects of policies assumed or ceded, of expense related to the provision for policy benefits and costs incurred. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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| X | ||||||||||
- Definition Amount of operating expense classified as other, disclosed in supplementary insurance information. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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