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Commitments and Contingencies - Schedule of Restricted Assets (Details) - Athene Holding Limited - USD ($)
$ in Millions
Dec. 31, 2023
Dec. 31, 2022
Financial Instruments Owned and Pledged as Collateral [Line Items]    
AFS securities $ 32,458 $ 15,366
Trading securities 139 55
Equity securities 80 38
Mortgage loans 14,257 8,849
Investment funds 409 103
Derivative assets 73 65
Short-term investments 153 120
Other investments 313 170
Restricted cash and cash equivalents 1,761 628
Total restricted assets $ 49,643 $ 25,394