v3.26.1
Future Policy Benefits (Long Duration Reinsurance Contracts) (Details) - USD ($)
$ in Millions
 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Dec. 31, 2025
Dec. 31, 2024
Liability for Future Policy Benefit, by Product Segment [Line Items]        
Future policy benefits $ 73,032 $ 63,531 $ 66,425  
Liability for Future Policy Benefits and Unpaid Claims and Claims Adjustment Expense 6,409 5,913    
Future Policy Benefits Unearned Revenue Liability 778 825    
Future Policy Benefits Cost Of Reinsurance Liability 1,619 0    
Additional Liability, Long-Duration Insurance, before Reinsurance, after Discount Rate Change 583 125    
Liability For Future Policy Benefits Before Reinsurance Other Long Duration Contracts 252 145    
Life Insurance Product Line [Member] | Americas [Member] | Other Segments        
Liability for Future Policy Benefit, by Product Segment [Line Items]        
AOCI, Liability for Future Policy Benefit, Expected Net Premium, before Tax (8,845) (8,281) 79,828 $ 77,881
Liability for Future Policy Benefit, Expected Net Premium, Cumulative Increase (Decrease) from Cash Flow Change     0 0
Liability for Future Policy Benefit, Expected Net Premium, Cumulative Increase (Decrease) of Actual Variance from Expected Experience     (2,239) (487)
Liability for Future Policy Benefit, Expected Net Premium, Original Discount Rate, before Reinsurance, after Cash Flow Change 79,163 79,177 77,589 77,394
Liability for Future Policy Benefit, Expected Net Premium, Issuance [1] 2,533 4,467    
Liability for Future Policy Benefit, Expected Net Premium, Interest Income [2] 1,791 1,778    
Liability for Future Policy Benefit, Expected Net Premium, Net Premium Collected [3] (2,750) (4,464)    
Liability for Future Policy Benefit, Expected Net Premium, Increase (Decrease) for Other Change 0 2    
Liability for Future Policy Benefit, Expected Net Premium, before Reinsurance, after Discount Rate Change 70,318 70,896    
AOCI, Liability for Future Policy Benefit, Expected Future Policy Benefit, before Tax (11,127) (10,645) 94,710 90,711
Liability for Future Policy Benefit, Expected Future Policy Benefit, Cumulative Increase (Decrease) from Cash Flow Change     0 0
Liability for Future Policy Benefit, Expected Future Policy Benefit, Cumulative Increase (Decrease) of Actual Variance from Expected Experience     (2,264) (419)
Liability for Future Policy Benefit, Expected Future Benefit, Original Discount Rate, before Reinsurance, after Cash Flow Change 94,324 93,953 92,446 90,292
Liability for Future Policy Benefit, Expected Future Policy Benefit, Issuance [1] 2,533 4,467    
Liability for Future Policy Benefit, Expected Future Policy Benefit, Interest Expense [2] 2,152 2,131    
Liability for Future Policy Benefit, Expected Future Policy Benefit, Benefit Payment [4] (2,807) (2,942)    
Liability for Future Policy Benefit, Expected Future Policy Benefit, Increase (Decrease) for Other Change 0 5    
Liability for Future Policy Benefit, Expected Future Policy Benefit, before Reinsurance, after Discount Rate Change 83,197 83,308    
Future policy benefits 12,879 12,412    
Liability for Future Policy Benefit, Reinsurance Recoverable, after Allowance (840) (788)    
Liability for Future Policy Benefit, after Reinsurance $ 12,039 $ 11,624    
Liability for Future Policy Benefit, Weighted-Average Duration 11 years 11 years    
Liability for Future Policy Benefit, Weighted-Average Interest Accretion Rate 4.60% 4.70%    
Liability for Future Policy Benefit, Current Weighted-Average Discount Rate 5.70% 5.60%    
Life Insurance Product Line [Member] | CANADA | Other Segments        
Liability for Future Policy Benefit, by Product Segment [Line Items]        
AOCI, Liability for Future Policy Benefit, Expected Net Premium, before Tax $ (4,490) $ (4,617) 23,247 20,928
Liability for Future Policy Benefit, Expected Net Premium, Cumulative Increase (Decrease) from Cash Flow Change     0 0
Liability for Future Policy Benefit, Expected Net Premium, Cumulative Increase (Decrease) of Actual Variance from Expected Experience     18 67
Liability for Future Policy Benefit, Expected Net Premium, Original Discount Rate, before Reinsurance, after Cash Flow Change 22,630 22,314 23,265 20,995
Liability for Future Policy Benefit, Expected Net Premium, Issuance [1] 250 236    
Liability for Future Policy Benefit, Expected Net Premium, Interest Income [2] 402 364    
Liability for Future Policy Benefit, Expected Net Premium, Net Premium Collected [3] (516) (482)    
Liability for Future Policy Benefit, Expected Net Premium, Increase (Decrease) for Other Change (771) 1,201    
Liability for Future Policy Benefit, Expected Net Premium, before Reinsurance, after Discount Rate Change 18,140 17,697    
AOCI, Liability for Future Policy Benefit, Expected Future Policy Benefit, before Tax (3,991) (3,996) 26,896 24,309
Liability for Future Policy Benefit, Expected Future Policy Benefit, Cumulative Increase (Decrease) from Cash Flow Change     0 0
Liability for Future Policy Benefit, Expected Future Policy Benefit, Cumulative Increase (Decrease) of Actual Variance from Expected Experience     14 72
Liability for Future Policy Benefit, Expected Future Benefit, Original Discount Rate, before Reinsurance, after Cash Flow Change 26,233 25,920 26,910 24,381
Liability for Future Policy Benefit, Expected Future Policy Benefit, Issuance [1] 250 236    
Liability for Future Policy Benefit, Expected Future Policy Benefit, Interest Expense [2] 513 470    
Liability for Future Policy Benefit, Expected Future Policy Benefit, Benefit Payment [4] (548) (564)    
Liability for Future Policy Benefit, Expected Future Policy Benefit, Increase (Decrease) for Other Change (892) 1,397    
Liability for Future Policy Benefit, Expected Future Policy Benefit, before Reinsurance, after Discount Rate Change 22,242 21,924    
Future policy benefits 4,102 4,227    
Liability for Future Policy Benefit, Reinsurance Recoverable, after Allowance (244) (261)    
Liability for Future Policy Benefit, after Reinsurance $ 3,858 $ 3,966    
Liability for Future Policy Benefit, Weighted-Average Duration 14 years 14 years    
Liability for Future Policy Benefit, Weighted-Average Interest Accretion Rate 3.70% 3.60%    
Liability for Future Policy Benefit, Current Weighted-Average Discount Rate 5.00% 4.90%    
Life Insurance Product Line [Member] | EMEA [Member] | Other Segments        
Liability for Future Policy Benefit, by Product Segment [Line Items]        
AOCI, Liability for Future Policy Benefit, Expected Net Premium, before Tax $ (3,046) $ (2,979) 18,353 15,911
Liability for Future Policy Benefit, Expected Net Premium, Cumulative Increase (Decrease) from Cash Flow Change     0 0
Liability for Future Policy Benefit, Expected Net Premium, Cumulative Increase (Decrease) of Actual Variance from Expected Experience     489 375
Liability for Future Policy Benefit, Expected Net Premium, Original Discount Rate, before Reinsurance, after Cash Flow Change 19,464 17,885 18,842 16,286
Liability for Future Policy Benefit, Expected Net Premium, Issuance [1] 1,584 692    
Liability for Future Policy Benefit, Expected Net Premium, Interest Income [2] 340 290    
Liability for Future Policy Benefit, Expected Net Premium, Net Premium Collected [3] (1,022) (927)    
Liability for Future Policy Benefit, Expected Net Premium, Increase (Decrease) for Other Change (280) 1,544    
Liability for Future Policy Benefit, Expected Net Premium, before Reinsurance, after Discount Rate Change 16,418 14,906    
AOCI, Liability for Future Policy Benefit, Expected Future Policy Benefit, before Tax (3,640) (3,396) 20,363 17,365
Liability for Future Policy Benefit, Expected Future Policy Benefit, Cumulative Increase (Decrease) from Cash Flow Change     0 0
Liability for Future Policy Benefit, Expected Future Policy Benefit, Cumulative Increase (Decrease) of Actual Variance from Expected Experience     478 371
Liability for Future Policy Benefit, Expected Future Benefit, Original Discount Rate, before Reinsurance, after Cash Flow Change 21,511 19,593 20,841 17,736
Liability for Future Policy Benefit, Expected Future Policy Benefit, Issuance [1] 1,592 692    
Liability for Future Policy Benefit, Expected Future Policy Benefit, Interest Expense [2] 368 312    
Liability for Future Policy Benefit, Expected Future Policy Benefit, Benefit Payment [4] (969) (845)    
Liability for Future Policy Benefit, Expected Future Policy Benefit, Increase (Decrease) for Other Change (321) 1,698    
Liability for Future Policy Benefit, Expected Future Policy Benefit, before Reinsurance, after Discount Rate Change 17,871 16,197    
Future policy benefits 1,453 1,291    
Liability for Future Policy Benefit, Reinsurance Recoverable, after Allowance (13) (17)    
Liability for Future Policy Benefit, after Reinsurance $ 1,440 $ 1,274    
Liability for Future Policy Benefit, Weighted-Average Duration 8 years 8 years    
Liability for Future Policy Benefit, Weighted-Average Interest Accretion Rate 3.60% 3.40%    
Liability for Future Policy Benefit, Current Weighted-Average Discount Rate 5.80% 5.60%    
Life Insurance Product Line [Member] | Asia Pacific [Member] | Other Segments        
Liability for Future Policy Benefit, by Product Segment [Line Items]        
AOCI, Liability for Future Policy Benefit, Expected Net Premium, before Tax $ (13,093) $ (13,052) 50,206 44,801
Liability for Future Policy Benefit, Expected Net Premium, Cumulative Increase (Decrease) from Cash Flow Change     0 0
Liability for Future Policy Benefit, Expected Net Premium, Cumulative Increase (Decrease) of Actual Variance from Expected Experience     34 (174)
Liability for Future Policy Benefit, Expected Net Premium, Original Discount Rate, before Reinsurance, after Cash Flow Change 52,439 49,103 50,240 44,627
Liability for Future Policy Benefit, Expected Net Premium, Issuance [1] 3,414 2,585    
Liability for Future Policy Benefit, Expected Net Premium, Interest Income [2] 732 625    
Liability for Future Policy Benefit, Expected Net Premium, Net Premium Collected [3] (1,259) (1,212)    
Liability for Future Policy Benefit, Expected Net Premium, Increase (Decrease) for Other Change (688) 2,478    
Liability for Future Policy Benefit, Expected Net Premium, before Reinsurance, after Discount Rate Change 39,346 36,051    
AOCI, Liability for Future Policy Benefit, Expected Future Policy Benefit, before Tax (15,618) (15,482) 55,572 49,712
Liability for Future Policy Benefit, Expected Future Policy Benefit, Cumulative Increase (Decrease) from Cash Flow Change     0 0
Liability for Future Policy Benefit, Expected Future Policy Benefit, Cumulative Increase (Decrease) of Actual Variance from Expected Experience     39 (198)
Liability for Future Policy Benefit, Expected Future Benefit, Original Discount Rate, before Reinsurance, after Cash Flow Change 58,045 54,348 55,611 49,514
Liability for Future Policy Benefit, Expected Future Policy Benefit, Issuance [1] 3,400 2,585    
Liability for Future Policy Benefit, Expected Future Policy Benefit, Interest Expense [2] 827 714    
Liability for Future Policy Benefit, Expected Future Policy Benefit, Benefit Payment [4] (1,075) (1,053)    
Liability for Future Policy Benefit, Expected Future Policy Benefit, Increase (Decrease) for Other Change (718) 2,588    
Liability for Future Policy Benefit, Expected Future Policy Benefit, before Reinsurance, after Discount Rate Change 42,427 38,866    
Future policy benefits 3,081 2,815    
Liability for Future Policy Benefit, Reinsurance Recoverable, after Allowance (69) (78)    
Liability for Future Policy Benefit, after Reinsurance $ 3,012 $ 2,737    
Liability for Future Policy Benefit, Weighted-Average Duration 15 years 15 years    
Liability for Future Policy Benefit, Weighted-Average Interest Accretion Rate 2.90% 2.70%    
Liability for Future Policy Benefit, Current Weighted-Average Discount Rate 4.90% 4.60%    
Insurance, Other | Americas [Member] | Other Segments        
Liability for Future Policy Benefit, by Product Segment [Line Items]        
AOCI, Liability for Future Policy Benefit, Expected Net Premium, before Tax $ (212) $ (220) 2,627 1,346
Liability for Future Policy Benefit, Expected Net Premium, Cumulative Increase (Decrease) from Cash Flow Change     0 0
Liability for Future Policy Benefit, Expected Net Premium, Cumulative Increase (Decrease) of Actual Variance from Expected Experience     (17) (25)
Liability for Future Policy Benefit, Expected Net Premium, Original Discount Rate, before Reinsurance, after Cash Flow Change 2,544 1,274 2,610 1,321
Liability for Future Policy Benefit, Expected Net Premium, Issuance [1] 528 2,118    
Liability for Future Policy Benefit, Expected Net Premium, Interest Income [2] 53 20    
Liability for Future Policy Benefit, Expected Net Premium, Net Premium Collected [3] (647) (2,185)    
Liability for Future Policy Benefit, Expected Net Premium, Increase (Decrease) for Other Change 0 0    
Liability for Future Policy Benefit, Expected Net Premium, before Reinsurance, after Discount Rate Change 2,332 1,054    
AOCI, Liability for Future Policy Benefit, Expected Future Policy Benefit, before Tax (540) (517) 13,388 9,489
Liability for Future Policy Benefit, Expected Future Policy Benefit, Cumulative Increase (Decrease) from Cash Flow Change     0 0
Liability for Future Policy Benefit, Expected Future Policy Benefit, Cumulative Increase (Decrease) of Actual Variance from Expected Experience     (14) (28)
Liability for Future Policy Benefit, Expected Future Benefit, Original Discount Rate, before Reinsurance, after Cash Flow Change 13,568 11,333 13,374 9,461
Liability for Future Policy Benefit, Expected Future Policy Benefit, Issuance [1] 534 2,133    
Liability for Future Policy Benefit, Expected Future Policy Benefit, Interest Expense [2] 320 265    
Liability for Future Policy Benefit, Expected Future Policy Benefit, Benefit Payment [4] (660) (526)    
Liability for Future Policy Benefit, Expected Future Policy Benefit, Increase (Decrease) for Other Change 0 0    
Liability for Future Policy Benefit, Expected Future Policy Benefit, before Reinsurance, after Discount Rate Change 13,028 10,816    
Liability For Future Policy Benefits Cumulative Amount Of Fair Value Hedging Adjustments (10) 7    
Future policy benefits 10,686 9,769    
Liability for Future Policy Benefit, Reinsurance Recoverable, after Allowance (2,940) (1,354)    
Liability for Future Policy Benefit, after Reinsurance $ 7,746 $ 8,415    
Liability for Future Policy Benefit, Weighted-Average Duration 9 years 9 years    
Liability for Future Policy Benefit, Weighted-Average Interest Accretion Rate 4.50% 4.10%    
Liability for Future Policy Benefit, Current Weighted-Average Discount Rate 5.50% 5.40%    
Insurance, Other | CANADA | Other Segments        
Liability for Future Policy Benefit, by Product Segment [Line Items]        
AOCI, Liability for Future Policy Benefit, Expected Net Premium, before Tax $ (188) $ (209) 3,518 3,614
Liability for Future Policy Benefit, Expected Net Premium, Cumulative Increase (Decrease) from Cash Flow Change     0 0
Liability for Future Policy Benefit, Expected Net Premium, Cumulative Increase (Decrease) of Actual Variance from Expected Experience     (11) 7
Liability for Future Policy Benefit, Expected Net Premium, Original Discount Rate, before Reinsurance, after Cash Flow Change 3,278 3,704 3,507 3,621
Liability for Future Policy Benefit, Expected Net Premium, Issuance [1] 0 0    
Liability for Future Policy Benefit, Expected Net Premium, Interest Income [2] 62 66    
Liability for Future Policy Benefit, Expected Net Premium, Net Premium Collected [3] (178) (185)    
Liability for Future Policy Benefit, Expected Net Premium, Increase (Decrease) for Other Change (113) 202    
Liability for Future Policy Benefit, Expected Net Premium, before Reinsurance, after Discount Rate Change 3,090 3,495    
AOCI, Liability for Future Policy Benefit, Expected Future Policy Benefit, before Tax (161) (139) 8,160 7,934
Liability for Future Policy Benefit, Expected Future Policy Benefit, Cumulative Increase (Decrease) from Cash Flow Change     0 0
Liability for Future Policy Benefit, Expected Future Policy Benefit, Cumulative Increase (Decrease) of Actual Variance from Expected Experience     (11) 7
Liability for Future Policy Benefit, Expected Future Benefit, Original Discount Rate, before Reinsurance, after Cash Flow Change 7,805 8,332 8,149 7,941
Liability for Future Policy Benefit, Expected Future Policy Benefit, Issuance [1] 0 0    
Liability for Future Policy Benefit, Expected Future Policy Benefit, Interest Expense [2] 175 174    
Liability for Future Policy Benefit, Expected Future Policy Benefit, Benefit Payment [4] (251) (235)    
Liability for Future Policy Benefit, Expected Future Policy Benefit, Increase (Decrease) for Other Change (268) 452    
Liability for Future Policy Benefit, Expected Future Policy Benefit, before Reinsurance, after Discount Rate Change 7,644 8,193    
Liability For Future Policy Benefits Cumulative Amount Of Fair Value Hedging Adjustments 0 0    
Future policy benefits 4,554 4,698    
Liability for Future Policy Benefit, Reinsurance Recoverable, after Allowance 0 0    
Liability for Future Policy Benefit, after Reinsurance $ 4,554 $ 4,698    
Liability for Future Policy Benefit, Weighted-Average Duration 12 years 12 years    
Liability for Future Policy Benefit, Weighted-Average Interest Accretion Rate 4.10% 4.00%    
Liability for Future Policy Benefit, Current Weighted-Average Discount Rate 4.90% 4.80%    
Insurance, Other | EMEA [Member] | Other Segments        
Liability for Future Policy Benefit, by Product Segment [Line Items]        
AOCI, Liability for Future Policy Benefit, Expected Net Premium, before Tax $ (10,764) $ (9,264) 87,259 71,360
Liability for Future Policy Benefit, Expected Net Premium, Cumulative Increase (Decrease) from Cash Flow Change     0 0
Liability for Future Policy Benefit, Expected Net Premium, Cumulative Increase (Decrease) of Actual Variance from Expected Experience     174 (317)
Liability for Future Policy Benefit, Expected Net Premium, Original Discount Rate, before Reinsurance, after Cash Flow Change 91,487 83,155 87,433 71,043
Liability for Future Policy Benefit, Expected Net Premium, Issuance [1] 7,746 7,619    
Liability for Future Policy Benefit, Expected Net Premium, Interest Income [2] 1,749 1,325    
Liability for Future Policy Benefit, Expected Net Premium, Net Premium Collected [3] (3,844) (4,388)    
Liability for Future Policy Benefit, Expected Net Premium, Increase (Decrease) for Other Change (1,597) 7,556    
Liability for Future Policy Benefit, Expected Net Premium, before Reinsurance, after Discount Rate Change 80,723 73,891    
AOCI, Liability for Future Policy Benefit, Expected Future Policy Benefit, before Tax (11,794) (10,210) 98,153 78,290
Liability for Future Policy Benefit, Expected Future Policy Benefit, Cumulative Increase (Decrease) from Cash Flow Change     0 0
Liability for Future Policy Benefit, Expected Future Policy Benefit, Cumulative Increase (Decrease) of Actual Variance from Expected Experience     164 (323)
Liability for Future Policy Benefit, Expected Future Benefit, Original Discount Rate, before Reinsurance, after Cash Flow Change 102,252 92,239 98,317 77,967
Liability for Future Policy Benefit, Expected Future Policy Benefit, Issuance [1] 7,746 7,619    
Liability for Future Policy Benefit, Expected Future Policy Benefit, Interest Expense [2] 1,956 1,463    
Liability for Future Policy Benefit, Expected Future Policy Benefit, Benefit Payment [4] (3,950) (3,077)    
Liability for Future Policy Benefit, Expected Future Policy Benefit, Increase (Decrease) for Other Change (1,817) 8,267    
Liability for Future Policy Benefit, Expected Future Policy Benefit, before Reinsurance, after Discount Rate Change 90,458 82,029    
Liability For Future Policy Benefits Cumulative Amount Of Fair Value Hedging Adjustments 0 0    
Future policy benefits 9,735 8,138    
Liability for Future Policy Benefit, Reinsurance Recoverable, after Allowance 0 0    
Liability for Future Policy Benefit, after Reinsurance $ 9,735 $ 8,138    
Liability for Future Policy Benefit, Weighted-Average Duration 9 years 10 years    
Liability for Future Policy Benefit, Weighted-Average Interest Accretion Rate 4.00% 3.50%    
Liability for Future Policy Benefit, Current Weighted-Average Discount Rate 5.60% 5.20%    
Insurance, Other | Asia Pacific [Member] | Other Segments        
Liability for Future Policy Benefit, by Product Segment [Line Items]        
AOCI, Liability for Future Policy Benefit, Expected Net Premium, before Tax $ (878) $ (511) 2,106 2,758
Liability for Future Policy Benefit, Expected Net Premium, Cumulative Increase (Decrease) from Cash Flow Change     0 0
Liability for Future Policy Benefit, Expected Net Premium, Cumulative Increase (Decrease) of Actual Variance from Expected Experience     76 (17)
Liability for Future Policy Benefit, Expected Net Premium, Original Discount Rate, before Reinsurance, after Cash Flow Change 1,586 2,485 2,182 2,741
Liability for Future Policy Benefit, Expected Net Premium, Issuance [1] 6,878 2,452    
Liability for Future Policy Benefit, Expected Net Premium, Interest Income [2] 12 23    
Liability for Future Policy Benefit, Expected Net Premium, Net Premium Collected [3] (7,426) (2,978)    
Liability for Future Policy Benefit, Expected Net Premium, Increase (Decrease) for Other Change (60) 247    
Liability for Future Policy Benefit, Expected Net Premium, before Reinsurance, after Discount Rate Change 708 1,974    
AOCI, Liability for Future Policy Benefit, Expected Future Policy Benefit, before Tax (5,318) (3,092) 16,870 14,626
Liability for Future Policy Benefit, Expected Future Policy Benefit, Cumulative Increase (Decrease) from Cash Flow Change     0 0
Liability for Future Policy Benefit, Expected Future Policy Benefit, Cumulative Increase (Decrease) of Actual Variance from Expected Experience     115 (22)
Liability for Future Policy Benefit, Expected Future Benefit, Original Discount Rate, before Reinsurance, after Cash Flow Change 22,927 18,239 $ 16,985 $ 14,604
Liability for Future Policy Benefit, Expected Future Policy Benefit, Issuance [1] 6,878 2,462    
Liability for Future Policy Benefit, Expected Future Policy Benefit, Interest Expense [2] 286 160    
Liability for Future Policy Benefit, Expected Future Policy Benefit, Benefit Payment [4] (540) (324)    
Liability for Future Policy Benefit, Expected Future Policy Benefit, Increase (Decrease) for Other Change (682) 1,337    
Liability for Future Policy Benefit, Expected Future Policy Benefit, before Reinsurance, after Discount Rate Change 17,609 15,147    
Liability For Future Policy Benefits Cumulative Amount Of Fair Value Hedging Adjustments 0 0    
Future policy benefits 16,901 13,173    
Liability for Future Policy Benefit, Reinsurance Recoverable, after Allowance 0 0    
Liability for Future Policy Benefit, after Reinsurance $ 16,901 $ 13,173    
Liability for Future Policy Benefit, Weighted-Average Duration 12 years 14 years    
Liability for Future Policy Benefit, Weighted-Average Interest Accretion Rate 2.10% 1.90%    
Liability for Future Policy Benefit, Current Weighted-Average Discount Rate 5.30% 3.70%    
[1] Issuances: The present value, using the original discount rate, of the expected net premiums or the expected future policy benefits related to new insurance contracts that became effective during the current period and new policies assumed on existing contracts during the period.
[2] Interest accrual: The interest earned on the beginning present value of either the expected net premiums or the expected future policy benefits using the original interest rate.
[3] Net premiums collected: The portion of gross premiums collected from the ceding company that is used to fund expected benefit payments.
[4] Benefit payments: The release of the present value, using the original discount rate, of the expected future policy benefits due to death, lapse/withdrawal and other benefit payments based on current assumptions.