v3.26.3
Income Taxes (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Sep. 30, 2026
Sep. 30, 2025
Dec. 31, 2025
Effective Income Tax Rate Reconciliation [Line Items]          
Decrease to net income $ (1,440) $ (144) $ (1,389) $ 1,180  
Decrease to retained earnings (19,404)   (19,404)   $ (18,373)
Increase to other comprehensive income (5,077) $ 1,605 (5,792) $ 4,654  
Increase to accumulated other comprehensive income $ (15,244)   $ (15,244)   $ (9,452)
Effective income tax rate (as a percent) 37.90% 426.20% 44.00% 21.40%  
Valuation allowance $ 2,200   $ 2,200    
Valuation allowance for net operating losses 185   185    
Realized and unrealized capital losses 2,000   2,000    
Valuation allowance recorded in AOCI for unrealized capital losses 1,300   1,300    
Increase in valuation allowance related to net operating losses 6   25    
Increase in valuation allowance related to realized and unrealized capital losses 489   808    
Increase in valuation allowance recorded in P&L 262   453    
Increase (decrease) in valuation allowance recorded in OCI 227   355    
Reclassification of Disproportionate Tax Effects from AOCI          
Effective Income Tax Rate Reconciliation [Line Items]          
Decrease to net income 128        
Decrease to retained earnings 128   128    
Increase to other comprehensive income 128        
Increase to accumulated other comprehensive income $ 128   $ 128