Investments - Schedule of Concentration of Risk, by Risk Factor (Details) - Shareholders' Equity - Investment Concentration Risk - USD ($) $ in Millions	Dec. 31, 2025	Dec. 31, 2024
AP Grange Holdings, LLC
Concentration Risk [Line Items]
Investment concentration risk, amount	$ 5,080	$ 4,661
Atlas Securitized Products Holdings LP
Concentration Risk [Line Items]
Investment concentration risk, amount	3,304	3,172
Fox Hedge L.P.
Concentration Risk [Line Items]
Investment concentration risk, amount	3,171	$ 2,924
Apollo Multi-Asset Prime Securities 2, LLC
Concentration Risk [Line Items]
Investment concentration risk, amount	3,000
AP Alkaios (Luxembourg) S.à.r.l.
Concentration Risk [Line Items]
Investment concentration risk, amount	2,791
AMAPS I, LLC
Concentration Risk [Line Items]
Investment concentration risk, amount	$ 2,550

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 275
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-Name Accounting Standards Codification
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-URI https://asc.fasb.org/1943274/2147482861/275-10-50-18

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 275
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
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Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef
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Reference 5: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 275
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Reference 6: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 275
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Reference 7: http://www.xbrl.org/2003/role/exampleRef
-Topic 275
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Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Topic 275
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Reference 9: http://www.xbrl.org/2003/role/disclosureRef
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-URI https://asc.fasb.org/1943274/2147478785/954-310-50-2

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