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Disposition - Narrative (Details) - Disposal Group, Held-for-Sale, Not Discontinued Operations - USD ($) $ in Millions |  |  | 3 Months Ended |
--- | --- | --- | --- | ---
Jan. 30, 2025 | Aug. 13, 2024 | Mar. 31, 2025 | Dec. 31, 2024
EVB |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |
Proceeds from disposal |  | $ 2,000 |  |
Premiums and contract charges |  |  | $ 243 |
Adjusted net income (loss) by segment, after-tax |  |  | 22 |
Accumulated other comprehensive loss |  |  | (54) | $ 72
Group health |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |
Proceeds from disposal | $ 1,250 |  |  |
Premiums and contract charges |  |  | 124 |
Adjusted net income (loss) by segment, after-tax |  |  | $ 12 |

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- Definition Disposal Group, Including Discontinued Operation, Accumulated Other Comprehensive Income (Loss) + References No definition available. + Details
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- Definition Disposal Group, Including Discontinued Operation, Employer Voluntary Benefits Premiums And Contract Charges + References No definition available. + Details
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- Definition The operating income (loss), net of tax effect, as measured by the entity for segment reporting purposes. + References No definition available. + Details
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- Definition The cash inflow associated with the amount received from the sale of a portion of the company's business, for example a segment, division, branch or other business, during the period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 12 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482740/230-10-45-12 + Details
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