v3.26.1
Future Policy Benefits - Disaggregate Rollforwards (Details) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Dec. 31, 2025
Liability for Future Policy Benefit, Expected Future Policy Benefit [Roll Forward]      
Net liability for FPBs $ 134,900   $ 136,432
Fixed & Immediate Annuities      
Liability for Future Policy Benefit, Expected Future Policy Benefit [Roll Forward]      
Balance, beginning of period, at current discount rate at balance sheet date 0 $ 0  
Balance, beginning of period, at original discount rate 0 0  
Effect of actual variances from expected experience (1) 0 1  
Adjusted balance 0 1  
Issuances 287 604  
Net premiums collected (287) (605)  
Ending balance at original discount rate 0 0  
Balance, end of period, at current discount rate at balance sheet date 0 0  
Balance, beginning of period, at current discount rate at balance sheet date 57,446 47,910  
Balance, beginning of period, at original discount rate 57,896 49,191  
Effect of actual variances from expected experience (1) (32) (37)  
Adjusted balance 57,864 49,154  
Issuances 288 610  
Interest accrual 714 613  
Benefit payments (1,259) (1,158)  
Ending balance at original discount rate 57,607 49,219  
Effect of changes in discount rate assumptions (1,346) (1,005)  
Balance, end of period, at current discount rate at balance sheet date 56,261 48,214  
Cumulative amount of fair value hedging adjustments (326) (285)  
Net liability for FPBs 55,935 47,929 57,127
Less: Reinsurance recoverables 4,259   0
Net liability for FPBs, net of reinsurance 51,676   47,929
Undiscounted - Expected future benefit payments 105,575 93,608  
Discounted - Expected future benefit payments (at current discount rate at balance sheet date) $ 56,261 $ 48,214 57,446
Weighted-average duration of the liability 8 years 9 years  
Weighted-average interest accretion (original locked-in) rate 5.10% 5.10%  
Weighted-average current discount rate at balance sheet date 5.60% 5.60%  
Deferred Profit Liability Offset to Actual Versus Expected   $ 24  
Long-term Care      
Liability for Future Policy Benefit, Expected Future Policy Benefit [Roll Forward]      
Balance, beginning of period, at current discount rate at balance sheet date $ 5,548 5,475  
Balance, beginning of period, at original discount rate 5,515 5,568  
Effect of actual variances from expected experience (1) 21 (22)  
Adjusted balance 5,536 5,546  
Interest accrual 71 71  
Net premiums collected (142) (140)  
Ending balance at original discount rate 5,465 5,477  
Effect of changes in discount rate assumptions (42) (35)  
Balance, end of period, at current discount rate at balance sheet date 5,423 5,442  
Balance, beginning of period, at current discount rate at balance sheet date 20,772 20,012  
Balance, beginning of period, at original discount rate 21,490 21,024  
Effect of actual variances from expected experience (1) 44 (10)  
Adjusted balance 21,534 21,014  
Interest accrual 283 276  
Benefit payments (250) (225)  
Ending balance at original discount rate 21,567 21,065  
Effect of changes in discount rate assumptions (1,166) (907)  
Balance, end of period, at current discount rate at balance sheet date 20,401 20,158  
Net liability for FPBs 14,978 14,716 15,224
Undiscounted - Expected future gross premiums 10,229 10,450  
Undiscounted - Expected future benefit payments 44,517 44,745  
Discounted - Expected future gross premiums (at current discount rate at balance sheet date) 6,824 6,932  
Discounted - Expected future benefit payments (at current discount rate at balance sheet date) $ 20,401 $ 20,158 $ 20,772
Weighted-average duration of the liability 13 years 13 years  
Weighted-average interest accretion (original locked-in) rate 5.40% 5.40%  
Weighted-average current discount rate at balance sheet date 6.00% 5.80%