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Investment Information - Other investments, at fair value (Details) - USD ($) $ in Millions | Jun. 30, 2025 | Dec. 31, 2024
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Schedule Of Other Investments [Line Items] |  |
Other investments, at fair value | $ 2,892 | $ 3,066
Other investments |  |
Schedule Of Other Investments [Line Items] |  |
Other investments, at fair value | 1,810 | 2,135
Investment grade fixed income |  |
Schedule Of Other Investments [Line Items] |  |
Other investments, at fair value | 1,029 | 1,055
Private equity |  |
Schedule Of Other Investments [Line Items] |  |
Other investments, at fair value | 252 | 229
Lending |  |
Schedule Of Other Investments [Line Items] |  |
Other investments, at fair value | 238 | 303
Term loan investments |  |
Schedule Of Other Investments [Line Items] |  |
Other investments, at fair value | 217 | 430
Credit related funds |  |
Schedule Of Other Investments [Line Items] |  |
Other investments, at fair value | 72 | 99
Energy |  |
Schedule Of Other Investments [Line Items] |  |
Other investments, at fair value | 2 | 19
Fixed maturities |  |
Schedule Of Other Investments [Line Items] |  |
Other investments, at fair value | 1,009 | 854
Short term investments |  |
Schedule Of Other Investments [Line Items] |  |
Other investments, at fair value | 68 | 70
Equity securities |  |
Schedule Of Other Investments [Line Items] |  |
Other investments, at fair value | $ 5 | $ 7

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- Definition Amount of investments classified as other. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(12)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(3)(a)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478777/944-210-S99-1 + Details
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