v3.26.3
Investments - Investments - Net Realized Capital Gains (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Sep. 30, 2026
Sep. 30, 2025
Schedule of Investments [Line Items]        
Gain (Loss) on Sale of Other Investments $ (67) $ (12) $ (121) $ (59)
Net realized losses (116) (17) (104) (85)
Proceeds from Sale of Debt Securities, Available-for-sale     8,373 7,617
Transfer to Investments 211 17 211 17
Debt Securities [Member]        
Schedule of Investments [Line Items]        
Proceeds from Sale of Debt Securities, Available-for-sale 1,200 1,600 4,200 4,300
Not Designated as Hedging Instrument        
Schedule of Investments [Line Items]        
Translation Adjustment Functional to Reporting Currency, Increase (Decrease), Gross of Tax (1) 7 (4) (11)
Non-qualifying foreign currency derivatives (117) (5) (122) (16)
Realized Investment Gains Losses        
Schedule of Investments [Line Items]        
Equity Securities, FV-NI, Unrealized Gain (Loss) (26) 22 78 36
Total Fixed Maturities, AFS        
Schedule of Investments [Line Items]        
Debt Securities, Available-for-sale, Realized Gain 7 17 35 49
Gross losses on sales of fixed maturities (25) (38) (91) (108)
Change in ACL on fixed maturities, AFS (4) 0 (4) 2
Equity Securities [Member]        
Schedule of Investments [Line Items]        
Equity Securities, FV-NI, Realized Gain (Loss) 0 0 0 1
Equity Securities, FV-NI, Unrealized Gain (Loss) (27) 22 77 36
Equity securities (27) 22 77 37
Mortgages [Member]        
Schedule of Investments [Line Items]        
Change in ACL on mortgage loans $ 0 $ (6) $ 0 $ (6)