v3.26.3
Future Policy Benefits - Balances and changes in liability for future policy benefits (Details) - USD ($)
$ in Millions
 9 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Dec. 31, 2025
Dec. 31, 2024
Present value of expected net premiums        
Balance, beginning of year $ 9,190 $ 9,158    
Effect of changes in discount rate assumptions (AOCI) 538 858    
Beginning balance at original discount rate 9,728 10,016    
Effect of changes in cash flow assumptions     $ (250) $ (177)
Effect of actual variances from expected experience     (35) (24)
Adjusted beginning of year balance 9,443 9,815    
Issuances 560 528    
Interest accrual 274 291    
Net premium collected (883) (892)    
Other 3 3    
Ending balance at original discount rate 9,397 9,745    
Effect of changes in discount rate assumptions (AOCI) (1,025) (516)    
Balance, end of period 8,372 9,229    
Present value of expected future policy benefits        
Balance, beginning of year 61,592 57,009    
Effect of changes in discount rate assumptions (AOCI) 5,836 6,630    
Reclassification due to reinsurance recapture       0
Beginning balance at original discount rate 67,428 63,639    
Effect of changes in cash flow assumptions     (322) (124)
Effect of actual variances from expected experience     (48) (54)
Adjusted beginning of year balance 67,058 63,461    
Issuances 955 2,657    
Interest accrual 2,229 2,117    
Benefit payments (3,728) (3,443)    
Foreign exchange impact (156) 707    
Other 6 (6)    
Ending balance at original discount rate 66,364 65,493    
Effect of changes in discount rate assumptions (AOCI) (10,505) (5,582)    
Balance, end of period 55,859 59,911    
Net liability for future policy benefits, end of period 47,487 50,682    
Liability for future policy benefits for certain participating contracts 1,205 1,242    
Liability for universal life policies 4,339 4,323    
Deferred profit liability 2,439 2,512    
Other reconciling items 488 520    
Future policy benefits for life and accident and health insurance contracts 55,958 59,279 60,971  
Less: Reinsurance recoverable: (18,942) (21,185)    
Net liability for future policy benefits after reinsurance recoverable 37,016 38,094    
Individual Retirement        
Present value of expected net premiums        
Balance, beginning of year 0 0    
Effect of changes in discount rate assumptions (AOCI) 0 0    
Beginning balance at original discount rate 0 0    
Effect of changes in cash flow assumptions     0 0
Effect of actual variances from expected experience     0 0
Adjusted beginning of year balance 0 0    
Issuances 0 0    
Interest accrual 0 0    
Net premium collected 0 0    
Other 0 0    
Ending balance at original discount rate 0 0    
Effect of changes in discount rate assumptions (AOCI) 0 0    
Balance, end of period 0 0    
Present value of expected future policy benefits        
Balance, beginning of year 1,173 1,130    
Effect of changes in discount rate assumptions (AOCI) 110 145    
Reclassification due to reinsurance recapture       0
Beginning balance at original discount rate 1,283 1,275    
Effect of changes in cash flow assumptions     0 0
Effect of actual variances from expected experience     (23) (18)
Adjusted beginning of year balance 1,260 1,257    
Issuances 49 69    
Interest accrual 38 38    
Benefit payments (90) (88)    
Foreign exchange impact 0 0    
Other 0 5    
Ending balance at original discount rate 1,257 1,281    
Effect of changes in discount rate assumptions (AOCI) (178) (105)    
Balance, end of period 1,079 1,176    
Net liability for future policy benefits, end of period 1,079 1,176    
Liability for future policy benefits for certain participating contracts 0 0    
Liability for universal life policies 0 0    
Deferred profit liability 30 33    
Other reconciling items 13 15    
Future policy benefits for life and accident and health insurance contracts 1,122 1,224    
Less: Reinsurance recoverable: (5) (5)    
Net liability for future policy benefits after reinsurance recoverable $ 1,117 $ 1,219    
Weighted average liability duration of the liability for future policy benefits (in years) 6 years 10 months 24 days 7 years 4 months 24 days    
Group Retirement        
Present value of expected net premiums        
Balance, beginning of year $ 0 $ 0    
Effect of changes in discount rate assumptions (AOCI) 0 0    
Beginning balance at original discount rate 0 0    
Effect of changes in cash flow assumptions     0 0
Effect of actual variances from expected experience     0 0
Adjusted beginning of year balance 0 0    
Issuances 0 0    
Interest accrual 0 0    
Net premium collected 0 0    
Other 0 0    
Ending balance at original discount rate 0 0    
Effect of changes in discount rate assumptions (AOCI) 0 0    
Balance, end of period 0 0    
Present value of expected future policy benefits        
Balance, beginning of year 291 202    
Effect of changes in discount rate assumptions (AOCI) (5) 3    
Reclassification due to reinsurance recapture       102
Beginning balance at original discount rate 286 307    
Effect of changes in cash flow assumptions     0 0
Effect of actual variances from expected experience     (2) 0
Adjusted beginning of year balance 284 307    
Issuances 9 6    
Interest accrual 11 12    
Benefit payments (29) (33)    
Foreign exchange impact 0 0    
Other 0 (2)    
Ending balance at original discount rate 275 290    
Effect of changes in discount rate assumptions (AOCI) (12) 6    
Balance, end of period 263 296    
Net liability for future policy benefits, end of period 263 296    
Liability for future policy benefits for certain participating contracts 0 0    
Liability for universal life policies 0 0    
Deferred profit liability 19 21    
Other reconciling items 0 0    
Future policy benefits for life and accident and health insurance contracts 282 317    
Less: Reinsurance recoverable: 0 0    
Net liability for future policy benefits after reinsurance recoverable $ 282 $ 317    
Weighted average liability duration of the liability for future policy benefits (in years) 5 years 7 months 6 days 6 years    
Life Insurance        
Present value of expected net premiums        
Balance, beginning of year $ 8,365 $ 8,287    
Effect of changes in discount rate assumptions (AOCI) 504 797    
Beginning balance at original discount rate 8,869 9,084    
Effect of changes in cash flow assumptions     (250) (169)
Effect of actual variances from expected experience     (25) (24)
Adjusted beginning of year balance 8,594 8,891    
Issuances 543 501    
Interest accrual 248 262    
Net premium collected (793) (786)    
Other 3 3    
Ending balance at original discount rate 8,595 8,871    
Effect of changes in discount rate assumptions (AOCI) (947) (483)    
Balance, end of period 7,648 8,388    
Present value of expected future policy benefits        
Balance, beginning of year 17,209 16,947    
Effect of changes in discount rate assumptions (AOCI) 1,261 1,720    
Reclassification due to reinsurance recapture       0
Beginning balance at original discount rate 18,470 18,667    
Effect of changes in cash flow assumptions     (322) (129)
Effect of actual variances from expected experience     (12) (32)
Adjusted beginning of year balance 18,136 18,506    
Issuances 537 494    
Interest accrual 579 598    
Benefit payments (1,214) (1,124)    
Foreign exchange impact 0 0    
Other 6 2    
Ending balance at original discount rate 18,044 18,476    
Effect of changes in discount rate assumptions (AOCI) (2,454) (1,118)    
Balance, end of period 15,590 17,358    
Net liability for future policy benefits, end of period 7,942 8,970    
Liability for future policy benefits for certain participating contracts 11 11    
Liability for universal life policies 4,287 4,269    
Deferred profit liability 28 25    
Other reconciling items 368 402    
Future policy benefits for life and accident and health insurance contracts 12,636 13,677    
Less: Reinsurance recoverable: (644) (665)    
Net liability for future policy benefits after reinsurance recoverable $ 11,992 $ 13,012    
Weighted average liability duration of the liability for future policy benefits (in years) 10 years 2 months 12 days 10 years 7 months 6 days    
Institutional Markets        
Present value of expected net premiums        
Balance, beginning of year $ 0 $ 0    
Effect of changes in discount rate assumptions (AOCI) 0 0    
Beginning balance at original discount rate 0 0    
Effect of changes in cash flow assumptions     0 0
Effect of actual variances from expected experience     0 0
Adjusted beginning of year balance 0 0    
Issuances 0 0    
Interest accrual 0 0    
Net premium collected 0 0    
Other 0 0    
Ending balance at original discount rate 0 0    
Effect of changes in discount rate assumptions (AOCI) 0 0    
Balance, end of period 0 0    
Present value of expected future policy benefits        
Balance, beginning of year 24,147 19,487    
Effect of changes in discount rate assumptions (AOCI) 3,290 3,206    
Reclassification due to reinsurance recapture       259
Beginning balance at original discount rate 27,437 22,952    
Effect of changes in cash flow assumptions     0 9
Effect of actual variances from expected experience     11 13
Adjusted beginning of year balance 27,448 22,974    
Issuances 333 2,058    
Interest accrual 895 743    
Benefit payments (1,291) (1,085)    
Foreign exchange impact (156) 707    
Other 0 0    
Ending balance at original discount rate 27,229 25,397    
Effect of changes in discount rate assumptions (AOCI) (5,153) (3,448)    
Balance, end of period 22,076 21,949    
Net liability for future policy benefits, end of period 22,076 21,949    
Liability for future policy benefits for certain participating contracts 0 0    
Liability for universal life policies 0 0    
Deferred profit liability 1,613 1,643    
Other reconciling items 0 0    
Future policy benefits for life and accident and health insurance contracts 23,689 23,592    
Less: Reinsurance recoverable: (64) (46)    
Net liability for future policy benefits after reinsurance recoverable $ 23,625 $ 23,546    
Weighted average liability duration of the liability for future policy benefits (in years) 10 years 4 months 24 days 11 years 2 months 12 days    
Corporate & Other        
Present value of expected net premiums        
Balance, beginning of year $ 825 $ 871    
Effect of changes in discount rate assumptions (AOCI) 34 61    
Beginning balance at original discount rate 859 932    
Effect of changes in cash flow assumptions     0 (8)
Effect of actual variances from expected experience     (10) 0
Adjusted beginning of year balance 849 924    
Issuances 17 27    
Interest accrual 26 29    
Net premium collected (90) (106)    
Other 0 0    
Ending balance at original discount rate 802 874    
Effect of changes in discount rate assumptions (AOCI) (78) (33)    
Balance, end of period 724 841    
Present value of expected future policy benefits        
Balance, beginning of year 18,772 19,243    
Effect of changes in discount rate assumptions (AOCI) 1,180 1,556    
Reclassification due to reinsurance recapture       (361)
Beginning balance at original discount rate 19,952 20,438    
Effect of changes in cash flow assumptions     0 (4)
Effect of actual variances from expected experience     $ (22) $ (17)
Adjusted beginning of year balance 19,930 20,417    
Issuances 27 30    
Interest accrual 706 726    
Benefit payments (1,104) (1,113)    
Foreign exchange impact 0 0    
Other 0 (11)    
Ending balance at original discount rate 19,559 20,049    
Effect of changes in discount rate assumptions (AOCI) (2,708) (917)    
Balance, end of period 16,851 19,132    
Net liability for future policy benefits, end of period 16,127 18,291    
Liability for future policy benefits for certain participating contracts 1,194 1,231    
Liability for universal life policies 52 54    
Deferred profit liability 749 790    
Other reconciling items 107 103    
Future policy benefits for life and accident and health insurance contracts 18,229 20,469    
Less: Reinsurance recoverable: (18,229) (20,469)    
Net liability for future policy benefits after reinsurance recoverable $ 0 $ 0    
Weighted average liability duration of the liability for future policy benefits (in years) 9 years 7 months 6 days 10 years 7 months 6 days