v3.26.1
Investments - Schedule of Rollforward of Debt Securities Allowance for Credit Loss (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Debt Securities, Available-for-sale, Allowance for Credit Loss [Roll Forward]        
Beginning Balance $ 17 $ 40 $ 11 $ 39
Additions for which credit loss was not previously recorded 0 0 6 1
Changes for securities with previously recorded credit loss 7 27 34 28
Additions for purchases of PCD debt securities 0 0 0 0
Reductions from charge-offs 0 (53) (18) (53)
Reductions for securities disposed 0 (2) (9) (2)
Securities intended/required to be sold before recovery of amortized cost basis 0 0 0 (1)
Ending Balance 24 12 24 12
Accrued interest receivable on debt securities $ 564 $ 469 $ 564 $ 469
Debt Securities, Available-for-Sale, Accrued Interest, after Allowance for Credit Loss, Statement of Financial Position [Extensible Enumeration] Accrued investment income Accrued investment income Accrued investment income Accrued investment income
U.S. government securities        
Debt Securities, Available-for-sale, Allowance for Credit Loss [Roll Forward]        
Beginning Balance $ 0 $ 0 $ 0 $ 0
Additions for which credit loss was not previously recorded 0 0 0 0
Changes for securities with previously recorded credit loss 0 0 0 0
Additions for purchases of PCD debt securities 0 0 0 0
Reductions from charge-offs 0 0 0 0
Reductions for securities disposed 0 0 0 0
Securities intended/required to be sold before recovery of amortized cost basis 0 0 0 0
Ending Balance 0 0 0 0
Other government securities        
Debt Securities, Available-for-sale, Allowance for Credit Loss [Roll Forward]        
Beginning Balance 0 0 0 0
Additions for which credit loss was not previously recorded 0 0 0 0
Changes for securities with previously recorded credit loss 0 0 0 0
Additions for purchases of PCD debt securities 0 0 0 0
Reductions from charge-offs 0 0 0 0
Reductions for securities disposed 0 0 0 0
Securities intended/required to be sold before recovery of amortized cost basis 0 0 0 0
Ending Balance 0 0 0 0
Public utilities        
Debt Securities, Available-for-sale, Allowance for Credit Loss [Roll Forward]        
Beginning Balance 0 0 0 0
Additions for which credit loss was not previously recorded 0 0 0 0
Changes for securities with previously recorded credit loss 0 0 0 0
Additions for purchases of PCD debt securities 0 0 0 0
Reductions from charge-offs 0 0 0 0
Reductions for securities disposed 0 0 0 0
Securities intended/required to be sold before recovery of amortized cost basis 0 0 0 0
Ending Balance 0 0 0 0
Corporate securities        
Debt Securities, Available-for-sale, Allowance for Credit Loss [Roll Forward]        
Beginning Balance 6 8 0 8
Additions for which credit loss was not previously recorded 0 0 6 0
Changes for securities with previously recorded credit loss (1) 0 (1) 0
Additions for purchases of PCD debt securities 0 0 0 0
Reductions from charge-offs 0 0 0 0
Reductions for securities disposed 0 0 0 0
Securities intended/required to be sold before recovery of amortized cost basis 0 0 0 0
Ending Balance 5 8 5 8
Residential mortgage-backed        
Debt Securities, Available-for-sale, Allowance for Credit Loss [Roll Forward]        
Beginning Balance 1 6 4 6
Additions for which credit loss was not previously recorded 0 0 0 0
Changes for securities with previously recorded credit loss 0 0 (1) 0
Additions for purchases of PCD debt securities 0 0 0 0
Reductions from charge-offs 0 0 0 0
Reductions for securities disposed 0 (2) (2) (2)
Securities intended/required to be sold before recovery of amortized cost basis 0 0 0 0
Ending Balance 1 4 1 4
Commercial mortgage-backed        
Debt Securities, Available-for-sale, Allowance for Credit Loss [Roll Forward]        
Beginning Balance 0 0 0 0
Additions for which credit loss was not previously recorded 0 0 0 1
Changes for securities with previously recorded credit loss 0 0 0 0
Additions for purchases of PCD debt securities 0 0 0 0
Reductions from charge-offs 0 0 0 0
Reductions for securities disposed 0 0 0 0
Securities intended/required to be sold before recovery of amortized cost basis 0 0 0 (1)
Ending Balance 0 0 0 0
Other asset-backed securities        
Debt Securities, Available-for-sale, Allowance for Credit Loss [Roll Forward]        
Beginning Balance 10 26 7 25
Additions for which credit loss was not previously recorded 0 0 0 0
Changes for securities with previously recorded credit loss 8 27 36 28
Additions for purchases of PCD debt securities 0 0 0 0
Reductions from charge-offs 0 (53) (18) (53)
Reductions for securities disposed 0 0 (7) 0
Securities intended/required to be sold before recovery of amortized cost basis 0 0 0 0
Ending Balance $ 18 $ 0 $ 18 $ 0