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 $ 206,628   $ 208,855
Fixed & Immediate Annuities | RIS      
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) (13) (32)  
Adjusted balance (13) (32)  
Issuances 1,296 2,150  
Net premiums collected (1,283) (2,118)  
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 79,842 66,621  
Balance, beginning of period, at original discount rate 81,498 69,643  
Effect of actual variances from expected experience (1) (46) (80)  
Adjusted balance 81,452 69,563  
Issuances 1,297 2,179  
Interest accrual 966 833  
Benefit payments (1,828) (1,620)  
Effect of foreign currency translation (21) 9  
Ending balance at original discount rate 81,866 70,964  
Effect of changes in discount rate assumptions (2,889) (2,533)  
Balance, end of period, at current discount rate at balance sheet date 78,977 68,431  
Cumulative amount of fair value hedging adjustments (326) (285)  
Net liability for FPBs 78,651 68,146 79,523
Less: Reinsurance recoverables (Amount due to reinsurer) 12,227 2,228  
Net liability for FPBs, net of reinsurance 66,424 65,918  
Undiscounted - Expected future benefit payments 146,398 128,949  
Discounted - Expected future benefit payments (at current discount rate at balance sheet date) $ 78,977 $ 68,431 79,842
Weighted-average duration of the liability 8 years 8 years  
Weighted-average interest accretion (original locked-in) rate 4.80% 4.90%  
Weighted-average current discount rate at balance sheet date 5.60% 5.50%  
Deferred Profit Liability Offset to Actual Versus Expected   $ 34  
Whole and Term Life & Endowments | Asia      
Liability for Future Policy Benefit, Expected Future Policy Benefit [Roll Forward]      
Balance, beginning of period, at current discount rate at balance sheet date $ 3,910 4,023  
Balance, beginning of period, at original discount rate 4,337 4,286  
Effect of actual variances from expected experience (1) (11) (14)  
Adjusted balance 4,326 4,272  
Issuances 207 149  
Interest accrual 23 19  
Net premiums collected (167) (155)  
Effect of foreign currency translation (87) 155  
Ending balance at original discount rate 4,302 4,440  
Effect of changes in discount rate assumptions (490) (318)  
Effect of foreign currency translation on the effect of changes in discount rate assumptions 7 (14)  
Balance, end of period, at current discount rate at balance sheet date 3,819 4,108  
Balance, beginning of period, at current discount rate at balance sheet date 14,050 15,190  
Balance, beginning of period, at original discount rate 15,358 15,252  
Effect of actual variances from expected experience (1) 1 (12)  
Adjusted balance 15,359 15,240  
Issuances 207 149  
Interest accrual 98 91  
Benefit payments (256) (244)  
Effect of foreign currency translation (388) 544  
Ending balance at original discount rate 15,020 15,780  
Effect of changes in discount rate assumptions (1,938) (22)  
Effect of foreign currency translation on the effect of changes in discount rate assumptions (27) (85)  
Balance, end of period, at current discount rate at balance sheet date 13,055 15,673  
Net liability for FPBs 9,236 11,565 10,140
Less: Reinsurance recoverables (Amount due to reinsurer) (1) (2)  
Net liability for FPBs, net of reinsurance 9,237 11,567  
Undiscounted - Expected future gross premiums 9,147 9,043  
Undiscounted - Expected future benefit payments 25,998 26,263  
Discounted - Expected future gross premiums (at current discount rate at balance sheet date) 7,256 7,512  
Discounted - Expected future benefit payments (at current discount rate at balance sheet date) $ 13,055 $ 15,673 14,050
Weighted-average duration of the liability 16 years 18 years  
Weighted-average interest accretion (original locked-in) rate 2.80% 2.60%  
Weighted-average current discount rate at balance sheet date 4.00% 2.80%  
Accident & health insurance | Asia      
Liability for Future Policy Benefit, Expected Future Policy Benefit [Roll Forward]      
Balance, beginning of period, at current discount rate at balance sheet date $ 15,389 $ 17,203  
Balance, beginning of period, at original discount rate 18,243 18,820  
Effect of actual variances from expected experience (1) (36) (125)  
Adjusted balance 18,207 18,695  
Issuances 245 338  
Interest accrual 53 55  
Net premiums collected (449) (470)  
Effect of foreign currency translation (320) 1,072  
Ending balance at original discount rate 17,736 19,690  
Effect of changes in discount rate assumptions (3,196) (2,017)  
Effect of foreign currency translation on the effect of changes in discount rate assumptions 46 (84)  
Balance, end of period, at current discount rate at balance sheet date 14,586 17,589  
Balance, beginning of period, at current discount rate at balance sheet date 23,153 26,565  
Balance, beginning of period, at original discount rate 32,942 32,838  
Effect of actual variances from expected experience (1) (39) (132)  
Adjusted balance 32,903 32,706  
Issuances 245 337  
Interest accrual 115 116  
Benefit payments (310) (310)  
Effect of foreign currency translation (640) 1,661  
Ending balance at original discount rate 32,313 34,510  
Effect of changes in discount rate assumptions (10,805) (6,967)  
Effect of foreign currency translation on the effect of changes in discount rate assumptions 155 (325)  
Balance, end of period, at current discount rate at balance sheet date 21,663 27,218  
Cumulative impact of flooring the future policyholder benefits reserve 182 50  
Net liability for FPBs 7,259 9,679 7,913
Less: Reinsurance recoverables (Amount due to reinsurer) 102 141  
Net liability for FPBs, net of reinsurance 7,157 9,538  
Undiscounted - Expected future gross premiums 35,766 38,785  
Undiscounted - Expected future benefit payments 42,669 45,242  
Discounted - Expected future gross premiums (at current discount rate at balance sheet date) 25,297 30,160  
Discounted - Expected future benefit payments (at current discount rate at balance sheet date) $ 21,663 $ 27,218 23,153
Weighted-average duration of the liability 16 years 23 years  
Weighted-average interest accretion (original locked-in) rate 1.70% 1.70%  
Weighted-average current discount rate at balance sheet date 4.20% 2.90%  
Fixed Annuity | Latin America      
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 0  
Adjusted balance 0 0  
Issuances 448 330  
Interest accrual 2 1  
Net premiums collected (450) (331)  
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 12,336 9,600  
Balance, beginning of period, at original discount rate 11,588 9,133  
Effect of actual variances from expected experience (1) (1) (2)  
Adjusted balance 11,587 9,131  
Issuances 454 348  
Interest accrual 106 88  
Benefit payments (238) (188)  
Inflation adjustment 38 120  
Effect of foreign currency translation (407) 400  
Ending balance at original discount rate 11,540 9,899  
Effect of changes in discount rate assumptions 941 468  
Effect of foreign currency translation on the effect of changes in discount rate assumptions (28) 21  
Balance, end of period, at current discount rate at balance sheet date 12,453 10,388  
Net liability for FPBs 12,453 10,388 12,336
Undiscounted - Expected future benefit payments 17,028 14,760  
Discounted - Expected future benefit payments (at current discount rate at balance sheet date) $ 12,453 $ 10,388 12,336
Weighted-average duration of the liability 11 years 11 years  
Weighted-average interest accretion (original locked-in) rate 3.70% 3.70%  
Weighted-average current discount rate at balance sheet date 2.70% 3.10%  
Long-term Care | Corporate And Other      
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%