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REINSURANCE (Tables)
12 Months Ended
Dec. 31, 2023
Reinsurance Disclosures [Abstract]  
Schedule of Premiums Written and Earned and Incurred Losses and LAE
Premiums written and earned and incurred losses and LAE are comprised of the following for the periods indicated:
Years Ended December 31,
(Dollars in millions)202320222021
Written premiums:
Direct$5,031 $4,602 $3,988 
Assumed11,606 9,350 9,062 
Ceded(1,907)(1,608)(1,604)
Net written premiums$14,730 $12,344 $11,446 
Premiums earned:
Direct$4,733 $4,218 $3,589 
Assumed10,518 9,082 8,315 
Ceded(1,807)(1,513)(1,498)
Net premiums earned$13,443 $11,787 $10,406 
Incurred losses and LAE:
Direct$3,209 $2,804 $2,385 
Assumed5,870 6,285 5,741 
Ceded(651)(988)(735)
Net incurred losses and LAE$8,427 $8,100 $7,391