v3.25.1
Business Segments (Balance Sheet Information) (Details) - USD ($)
$ in Millions
Mar. 31, 2025
Dec. 31, 2024
Mar. 31, 2024
Segment Reporting Information [Line Items]      
Reinsurance receivables $ 6,288 $ 6,072  
Insurance receivables 3,729 3,697  
Deferred acquisition costs 999 959  
Goodwill 146 145  
Deferred non-insurance warranty acquisition expense 3,493 3,525  
Insurance reserves      
Claim and claim adjustment expenses 25,581 24,976  
Unearned premiums 7,504 7,346  
Future policy benefits 13,304 13,158 $ 13,513
Deferred non-insurance warranty revenue 4,488 4,530  
Operating Segments | Specialty      
Segment Reporting Information [Line Items]      
Reinsurance receivables 1,624 1,405  
Insurance receivables 992 1,062  
Deferred acquisition costs 441 427  
Goodwill 117 117  
Deferred non-insurance warranty acquisition expense 3,493 3,525  
Insurance reserves      
Claim and claim adjustment expenses 7,572 7,426  
Unearned premiums 3,267 3,275  
Future policy benefits 0 0  
Deferred non-insurance warranty revenue 4,488 4,530  
Operating Segments | Commercial      
Segment Reporting Information [Line Items]      
Reinsurance receivables 1,739 1,710  
Insurance receivables 2,306 2,219  
Deferred acquisition costs 423 405  
Goodwill 0 0  
Deferred non-insurance warranty acquisition expense 0 0  
Insurance reserves      
Claim and claim adjustment expenses 11,708 11,336  
Unearned premiums 3,366 3,252  
Future policy benefits 0 0  
Deferred non-insurance warranty revenue 0 0  
Operating Segments | International      
Segment Reporting Information [Line Items]      
Reinsurance receivables 558 539  
Insurance receivables 429 410  
Deferred acquisition costs 135 127  
Goodwill 29 28  
Deferred non-insurance warranty acquisition expense 0 0  
Insurance reserves      
Claim and claim adjustment expenses 3,046 2,920  
Unearned premiums 760 727  
Future policy benefits 0 0  
Deferred non-insurance warranty revenue 0 0  
Operating Segments | Life & Group      
Segment Reporting Information [Line Items]      
Reinsurance receivables 81 82  
Insurance receivables 2 4  
Deferred acquisition costs 0 0  
Goodwill 0 0  
Deferred non-insurance warranty acquisition expense 0 0  
Insurance reserves      
Claim and claim adjustment expenses 616 622  
Unearned premiums 112 92  
Future policy benefits 13,304 13,158  
Deferred non-insurance warranty revenue 0 0  
Operating Segments | Corporate & Other      
Segment Reporting Information [Line Items]      
Reinsurance receivables 2,286 2,336  
Insurance receivables 0 2  
Deferred acquisition costs 0 0  
Goodwill 0 0  
Deferred non-insurance warranty acquisition expense 0 0  
Insurance reserves      
Claim and claim adjustment expenses 2,639 2,672  
Unearned premiums 0 0  
Future policy benefits 0 0  
Deferred non-insurance warranty revenue 0 0  
Eliminations      
Segment Reporting Information [Line Items]      
Reinsurance receivables 0 0  
Insurance receivables 0 0  
Deferred acquisition costs 0 0  
Goodwill 0 0  
Deferred non-insurance warranty acquisition expense 0 0  
Insurance reserves      
Claim and claim adjustment expenses 0 0  
Unearned premiums (1) 0  
Future policy benefits 0 0  
Deferred non-insurance warranty revenue $ 0 $ 0