v3.26.1
Future Policy Benefits - Disaggregate Rollforwards (Details) - USD ($)
$ in Millions
 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Dec. 31, 2025
Liability for Future Policy Benefit, Expected Future Policy Benefit [Roll Forward]      
Net liability for FPBs $ 206,150   $ 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) (4) (39)  
Adjusted balance (4) (39)  
Issuances 2,169 2,769  
Net premiums collected (2,165) (2,730)  
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) (30) (100)  
Adjusted balance 81,468 69,543  
Issuances 2,187 2,797  
Interest accrual 1,943 1,676  
Benefit payments (3,851) (3,288)  
Effect of foreign currency translation (19) 27  
Ending balance at original discount rate 81,728 70,755  
Effect of changes in discount rate assumptions (2,434) (2,280)  
Effect of foreign currency translation on the effect of changes in discount rate assumptions (1) 0  
Balance, end of period, at current discount rate at balance sheet date 79,293 68,475  
Cumulative amount of fair value hedging adjustments (357) (282)  
Net liability for FPBs 78,936 68,193 79,523
Less: Reinsurance recoverables (Amount due to reinsurer) 12,104 2,207  
Net liability for FPBs, net of reinsurance 66,832 65,986  
Undiscounted - Expected future benefit payments 146,583 128,551  
Discounted - Expected future benefit payments (at current discount rate at balance sheet date) $ 79,293 $ 68,475 79,842
Weighted-average duration of the liability 8 years 8 years  
Weighted-average interest accretion (original locked-in) rate 4.90% 4.90%  
Weighted-average current discount rate at balance sheet date 5.60% 5.50%  
Deferred Profit Liability Offset to Actual Versus Expected   $ 46  
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) (32) (44)  
Adjusted balance 4,305 4,242  
Issuances 346 290  
Interest accrual 46 39  
Net premiums collected (332) (313)  
Effect of foreign currency translation (148) 340  
Ending balance at original discount rate 4,217 4,598  
Effect of changes in discount rate assumptions (528) (332)  
Effect of foreign currency translation on the effect of changes in discount rate assumptions 17 (25)  
Balance, end of period, at current discount rate at balance sheet date 3,706 4,241  
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) (12) (43)  
Adjusted balance 15,346 15,209  
Issuances 346 290  
Interest accrual 195 188  
Benefit payments (504) (482)  
Effect of foreign currency translation (637) 1,286  
Ending balance at original discount rate 14,746 16,491  
Effect of changes in discount rate assumptions (2,510) (433)  
Effect of foreign currency translation on the effect of changes in discount rate assumptions 32 27  
Balance, end of period, at current discount rate at balance sheet date 12,268 16,085  
Cumulative impact of flooring the future policyholder benefits reserve 3 0  
Net liability for FPBs 8,565 11,844 10,140
Less: Reinsurance recoverables (Amount due to reinsurer) (2) (2)  
Net liability for FPBs, net of reinsurance 8,567 11,846  
Undiscounted - Expected future gross premiums 9,042 9,474  
Undiscounted - Expected future benefit payments 25,791 27,843  
Discounted - Expected future gross premiums (at current discount rate at balance sheet date) 7,096 7,837  
Discounted - Expected future benefit payments (at current discount rate at balance sheet date) $ 12,268 $ 16,085 14,050
Weighted-average duration of the liability 15 years 17 years  
Weighted-average interest accretion (original locked-in) rate 2.80% 2.60%  
Weighted-average current discount rate at balance sheet date 4.50% 3.00%  
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) (73) (200)  
Adjusted balance 18,170 18,620  
Issuances 429 636  
Interest accrual 106 113  
Net premiums collected (864) (939)  
Effect of foreign currency translation (677) 1,836  
Ending balance at original discount rate 17,164 20,266  
Effect of changes in discount rate assumptions (3,453) (2,204)  
Effect of foreign currency translation on the effect of changes in discount rate assumptions 117 (161)  
Balance, end of period, at current discount rate at balance sheet date 13,828 17,901  
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) (77) (208)  
Adjusted balance 32,865 32,630  
Issuances 429 635  
Interest accrual 229 239  
Benefit payments (636) (647)  
Effect of foreign currency translation (1,282) 3,064  
Ending balance at original discount rate 31,605 35,921  
Effect of changes in discount rate assumptions (11,531) (8,209)  
Effect of foreign currency translation on the effect of changes in discount rate assumptions 395 (572)  
Balance, end of period, at current discount rate at balance sheet date 20,469 27,140  
Cumulative impact of flooring the future policyholder benefits reserve 181 156  
Net liability for FPBs 6,822 9,395 7,913
Less: Reinsurance recoverables (Amount due to reinsurer) 96 132  
Net liability for FPBs, net of reinsurance 6,726 9,263  
Undiscounted - Expected future gross premiums 34,799 40,090  
Undiscounted - Expected future benefit payments 41,866 47,275  
Discounted - Expected future gross premiums (at current discount rate at balance sheet date) 24,022 30,717  
Discounted - Expected future benefit payments (at current discount rate at balance sheet date) $ 20,469 $ 27,140 23,153
Weighted-average duration of the liability 17 years 21 years  
Weighted-average interest accretion (original locked-in) rate 1.70% 1.70%  
Weighted-average current discount rate at balance sheet date 4.50% 3.20%  
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 879 740  
Interest accrual 2 2  
Net premiums collected (881) (742)  
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) 4 (1)  
Adjusted balance 11,592 9,132  
Issuances 894 778  
Interest accrual 214 181  
Benefit payments (483) (389)  
Effect of foreign currency translation (270) 621  
Inflation adjustment 328 216  
Ending balance at original discount rate 12,275 10,539  
Effect of changes in discount rate assumptions 335 397  
Effect of foreign currency translation on the effect of changes in discount rate assumptions (2) 28  
Balance, end of period, at current discount rate at balance sheet date 12,608 10,964  
Net liability for FPBs 12,608 10,964 12,336
Undiscounted - Expected future benefit payments 18,052 15,671  
Discounted - Expected future benefit payments (at current discount rate at balance sheet date) $ 12,608 $ 10,964 12,336
Weighted-average duration of the liability 10 years 10 years  
Weighted-average interest accretion (original locked-in) rate 3.60% 3.70%  
Weighted-average current discount rate at balance sheet date 3.20% 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) 57 (3)  
Adjusted balance 5,572 5,565  
Interest accrual 141 141  
Net premiums collected (288) (280)  
Ending balance at original discount rate 5,425 5,426  
Effect of changes in discount rate assumptions (42) (6)  
Balance, end of period, at current discount rate at balance sheet date 5,383 5,420  
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) 107 26  
Adjusted balance 21,597 21,050  
Interest accrual 566 553  
Benefit payments (498) (452)  
Ending balance at original discount rate 21,665 21,151  
Effect of changes in discount rate assumptions (937) (928)  
Balance, end of period, at current discount rate at balance sheet date 20,728 20,223  
Net liability for FPBs 15,345 14,803 15,224
Undiscounted - Expected future gross premiums 10,075 10,269  
Undiscounted - Expected future benefit payments 44,361 44,566  
Discounted - Expected future gross premiums (at current discount rate at balance sheet date) 6,745 6,870  
Discounted - Expected future benefit payments (at current discount rate at balance sheet date) $ 20,728 $ 20,223 $ 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 5.80% 5.80%