v3.26.1
Investments (FVO Securities and Equity Securities) (Details) - USD ($)
$ in Millions
Mar. 31, 2026
Dec. 31, 2025
Securities held by CFEs    
Debt and Equity Securities, FV-NI [Line Items]    
Debt Securities, Trading, and Equity Securities, FV-NI, Cost $ 816 $ 0
Equity and Trading Securities, FV-NI, Unrealized Gains (Losses) 0 0
Debt Securities, Trading, and Equity Securities, FV-NI 816 0
General Account and Other Securities    
Debt and Equity Securities, FV-NI [Line Items]    
Debt Securities, Trading, and Equity Securities, FV-NI, Cost 202 218
Equity and Trading Securities, FV-NI, Unrealized Gains (Losses) 694 648
Debt Securities, Trading, and Equity Securities, FV-NI 896 866
FVO Securities [Member]    
Debt and Equity Securities, FV-NI [Line Items]    
Debt Securities, Trading, and Equity Securities, FV-NI, Cost 1,018 218
Equity and Trading Securities, FV-NI, Unrealized Gains (Losses) 694 648
Debt Securities, Trading, and Equity Securities, FV-NI 1,712 866
Common Stock    
Debt and Equity Securities, FV-NI [Line Items]    
Equity Securities, FV-NI, Cost 167 170
Equity and Trading Securities, FV-NI, Unrealized Gains (Losses) 40 25
Equity Securities, FV-NI 207 195
Non-redeemable preferred stock    
Debt and Equity Securities, FV-NI [Line Items]    
Equity Securities, FV-NI, Cost 53 37
Equity and Trading Securities, FV-NI, Unrealized Gains (Losses) 10 7
Equity Securities, FV-NI 63 44
Equity securities    
Debt and Equity Securities, FV-NI [Line Items]    
Equity Securities, FV-NI, Cost 220 207
Equity and Trading Securities, FV-NI, Unrealized Gains (Losses) 50 32
Equity Securities, FV-NI $ 270 $ 239