XML 64 R54.htm IDEA: XBRL DOCUMENT v3.25.1
SEGMENT REPORTING - Schedule of Underwriting Results for Segments (Details) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Segment Reporting Information [Line Items]    
Gross written premiums $ 4,391 $ 4,411
Net written premiums 3,735 3,900
Premiums earned 3,852 3,652
Incurred losses and LAE 2,893 2,237
Commission and brokerage 824 782
Other underwriting expenses 238 224
Underwriting gain (loss) (104) 409
Net investment income 491 457
Net gains (losses) on investments (7) (7)
Corporate expenses (21) (22)
Interest, fee and bond issue cost amortization expense (38) (37)
Other income (expense) (73) 31
INCOME (LOSS) BEFORE TAXES 248 832
Reinsurance    
Segment Reporting Information [Line Items]    
Gross written premiums 3,219 3,175
Net written premiums 2,811 2,942
Premiums earned 2,905 2,728
Incurred losses and LAE 2,223 1,640
Commission and brokerage 707 671
Other underwriting expenses 71 71
Underwriting gain (loss) (96) 347
Insurance    
Segment Reporting Information [Line Items]    
Gross written premiums 1,145 1,160
Net written premiums 896 897
Premiums earned 913 871
Incurred losses and LAE 640 551
Commission and brokerage 113 104
Other underwriting expenses 165 145
Underwriting gain (loss) (5) 71
Other    
Segment Reporting Information [Line Items]    
Gross written premiums 28 77
Net written premiums 27 61
Premiums earned 33 52
Incurred losses and LAE 30 46
Commission and brokerage 4 7
Other underwriting expenses 2 8
Underwriting gain (loss) $ (3) $ (8)