Reinsurance (Tables)

9 Months Ended

Sep. 30, 2024

Reinsurance Disclosures [Abstract]

Effect Of Reinsurance And Retrocessional Reinsurance On Premiums Written And Earned

The following tables summarize the effect of reinsurance and retrocessional reinsurance on premiums written and earned.

	Quarter Ended September 30,
	2024								2023
(dollars in thousands)	Direct		Assumed		Ceded		Net Premiums		Direct		Assumed		Ceded		Net Premiums
Underwriting:
Written	$	2,249,500	$	282,089	$	(549,264)	$	1,982,325	$	2,223,988	$	282,070	$	(478,035)	$	2,028,023
Earned	$	2,206,453	$	404,686	$	(500,842)	$	2,110,297	$	2,127,244	$	424,620	$	(429,901)	$	2,121,963
Program services and other fronting:
Written	763,082		177,038		(940,309)		(189)		615,424		557,324		(1,172,966)		(218)
Earned	721,786		530,688		(1,252,663)		(189)		669,544		313,079		(982,841)		(218)
Consolidated:
Written	$	3,012,582	$	459,127	$	(1,489,573)	$	1,982,136	$	2,839,412	$	839,394	$	(1,651,001)	$	2,027,805
Earned	$	2,928,239	$	935,374	$	(1,753,505)	$	2,110,108	$	2,796,788	$	737,699	$	(1,412,742)	$	2,121,745

	Nine Months Ended September 30,
	2024								2023
(dollars in thousands)	Direct		Assumed		Ceded		Net Premiums		Direct		Assumed		Ceded		Net Premiums
Underwriting:
Written	$	6,713,503	$	1,515,639	$	(1,735,668)	$	6,493,474	$	6,479,090	$	1,419,802	$	(1,444,626)	$	6,454,266
Earned	$	6,554,464	$	1,212,116	$	(1,451,224)	$	6,315,356	$	6,124,444	$	1,247,743	$	(1,250,605)	$	6,121,582
Program services and other fronting:
Written	2,451,180		1,443,916		(3,895,618)		(522)		2,012,806		991,305		(3,005,101)		(990)
Earned	2,236,845		894,803		(3,132,170)		(522)		1,960,219		546,871		(2,508,080)		(990)
Consolidated:
Written	$	9,164,683	$	2,959,555	$	(5,631,286)	$	6,492,952	$	8,491,896	$	2,411,107	$	(4,449,727)	$	6,453,276
Earned	$	8,791,309	$	2,106,919	$	(4,583,394)	$	6,314,834	$	8,084,663	$	1,794,614	$	(3,758,685)	$	6,120,592

Effect Of Reinsurance And Retrocessional Reinsurance On Losses and Loss Adjustment Expenses

The following table summarizes the effect of reinsurance and retrocessional reinsurance on losses and loss adjustment expenses in the Company's underwriting operations.

	Quarter Ended September 30,				Nine Months Ended September 30,
(dollars in thousands)	2024		2023		2024		2023
Gross losses and loss adjustment expenses	$	1,710,637	$	1,684,389	$	4,982,304	$	4,552,926
Ceded losses and loss adjustment expenses	(419,194)		(278,945)		(1,170,585)		(786,876)
Net losses and loss adjustment expenses	$	1,291,443	$	1,405,444	$	3,811,719	$	3,766,050