v3.26.1

Investments - Unrealized gains (losses) recognized in income (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025
Schedule of Investments [Abstract]
Proceeds from Sale of Debt Securities, Available-for-sale	$ 7,768	$ 8,945
Consolidated Entity, excluding Affiliated Entity
Gain (Loss) on Securities [Line Items]
Debt Securities, Trading, Unrealized Gain (Loss)	(231)	21
Equity Securities, FV-NI, Unrealized Gain (Loss)	$ (7)	$ 12

Amount of unrealized gain (loss) on investment in debt security measured at fair value with change in fair value recognized in net income (trading).

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Name Accounting Standards Codification
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Amount of unrealized gain (loss) on investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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-Name Accounting Standards Codification
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Amount of cash inflow from sale of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

+ References

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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.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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Athene Holding Ltd. 10-Q