v3.26.1
Investments - Schedule of Concentration of Risk, by Risk Factor (Details) - USD ($)
$ in Millions
3 Months Ended
Jun. 30, 2026
Dec. 31, 2025
Athora Holding Ltd. | Shareholders' Equity | Investment Concentration Risk    
Concentration Risk [Line Items]    
Investment concentration risk, amount $ 3,191  
Fox Hedge L.P. | Shareholders' Equity | Investment Concentration Risk    
Concentration Risk [Line Items]    
Investment concentration risk, amount 3,150 $ 3,171
AMAPS 2, LLC | Shareholders' Equity | Investment Concentration Risk    
Concentration Risk [Line Items]    
Investment concentration risk, amount 3,000 3,000
AMAPS 3, LLC | Shareholders' Equity | Investment Concentration Risk    
Concentration Risk [Line Items]    
Investment concentration risk, amount 2,995  
AP Alkaios (Luxembourg) S.à.r.l. | Shareholders' Equity | Investment Concentration Risk    
Concentration Risk [Line Items]    
Investment concentration risk, amount 2,775 2,791
AMAPS 4, LLC | Shareholders' Equity | Investment Concentration Risk    
Concentration Risk [Line Items]    
Investment concentration risk, amount 2,571  
AMAPS I, LLC | Shareholders' Equity | Investment Concentration Risk    
Concentration Risk [Line Items]    
Investment concentration risk, amount 2,544 2,550
AMAPS 5, LLC | Shareholders' Equity | Investment Concentration Risk    
Concentration Risk [Line Items]    
Investment concentration risk, amount 2,405  
AP Grange Holdings, LLC | Athene    
Concentration Risk [Line Items]    
Net gains (losses) from investment activities $ 673  
AP Grange Holdings, LLC | Shareholders' Equity | Investment Concentration Risk    
Concentration Risk [Line Items]    
Investment concentration risk, amount   5,080
Atlas Securitized Products Holdings L.P | Shareholders' Equity | Investment Concentration Risk    
Concentration Risk [Line Items]    
Investment concentration risk, amount   $ 3,304