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Investment Information - Other investments (Details) - USD ($) $ in Millions | Mar. 31, 2023 | Dec. 31, 2022
--- | --- | ---
Schedule Of Other Investments [Line Items] |  |
Other investments, at fair value | $ 1,776 | $ 1,644
Fixed maturities |  |
Schedule Of Other Investments [Line Items] |  |
Other investments, at fair value | 631 | 554
Other investments |  |
Schedule Of Other Investments [Line Items] |  |
Other investments, at fair value | 1,121 | 1,043
Other investments | Lending |  |
Schedule Of Other Investments [Line Items] |  |
Other investments, at fair value | 420 | 406
Other investments | Investment grade fixed income |  |
Schedule Of Other Investments [Line Items] |  |
Other investments, at fair value | 280 | 271
Other investments | Term loan investments |  |
Schedule Of Other Investments [Line Items] |  |
Other investments, at fair value | 209 | 164
Other investments | Private equity |  |
Schedule Of Other Investments [Line Items] |  |
Other investments, at fair value | 131 | 123
Other investments | Energy |  |
Schedule Of Other Investments [Line Items] |  |
Other investments, at fair value | 19 | 23
Other investments | Credit related funds |  |
Schedule Of Other Investments [Line Items] |  |
Other investments, at fair value | 62 | 56
Short-term investments |  |
Schedule Of Other Investments [Line Items] |  |
Other investments, at fair value | 17 | 33
Equity securities |  |
Schedule Of Other Investments [Line Items] |  |
Other investments, at fair value | $ 7 | $ 14

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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 + Details
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