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Segment Reporting (Tables)

12 Months Ended

Dec. 31, 2021

Segment Reporting [Abstract]

Schedule Of Underwriting Results For Operating Segments

	Year Ended December 31, 2021
(Dollars in thousands)	Reinsurance			Insurance			Total
Gross written premiums	$	9,067,292		$	3,982,464		$	13,049,756
Net written premiums		8,535,618			2,909,886			11,445,505
Premiums earned	$	7,757,483		$	2,648,957		$	10,406,441
Incurred losses and LAE		5,556,444			1,834,809			7,391,253
Commission and brokerage		1,854,466			354,300			2,208,766
Other underwriting expenses		199,148			383,499			582,647
Underwriting gain (loss)	$	147,426		$	76,349		$	223,775
Net investment income								1,164,892
Net realized capital gains (losses)								257,943
Corporate expenses								(67,827)
Interest, fee and bond issue cost amortization expense								(70,149)
Other income (expense)								36,987
Income (loss) before taxes							$	1,545,621

	Year Ended December 31, 2020
(Dollars in thousands)	Reinsurance			Insurance			Total
Gross written premiums	$	7,281,716		$	3,200,645		$	10,482,361
Net written premiums		6,767,579			2,349,404			9,116,983
Premiums earned	$	6,466,106		$	2,215,407		$	8,681,513
Incurred losses and LAE		4,933,411			1,617,426			6,550,837
Commission and brokerage		1,552,371			320,879			1,873,250
Other underwriting expenses		175,734			335,503			511,237
Underwriting gain (loss)	$	(195,410)		$	(58,401)		$	(253,811)
Net investment income								642,465
Net realized capital gains (losses)								267,649
Corporate expenses								(41,118)
Interest, fee and bond issue cost amortization expense								(36,323)
Other income (expense)								6,487
Income (loss) before taxes							$	585,349

	Year Ended December 31, 2019
(Dollars in thousands)	Reinsurance			Insurance			Total
Gross written premiums	$	6,355,889		$	2,777,475		$	9,133,364
Net written premiums		5,732,272			2,092,152			7,824,424
Premiums earned	$	5,491,296		$	1,912,390		$	7,403,686
Incurred losses and LAE		3,675,178			1,247,720			4,922,898
Commission and brokerage		1,400,247			303,479			1,703,726
Other underwriting expenses		160,834			280,065			440,899
Underwriting gain (loss)	$	255,037		$	81,126		$	336,163
Net investment income								647,139
Net realized capital gains (losses)								185,004
Corporate expenses								(32,966)
Interest, fee and bond issue cost amortization expense								(31,693)
Other income (expense)								(4,660)
Income (loss) before taxes							$	1,098,987

Schedule Of Gross Written Premiums Derived From Largest Non-U.S. Market

	Year Ended December 31,
(Dollars in thousands)	2021			2020			2019
United Kingdom gross written premium	$	1,245,909		$	1,116,363		$	964,358

X

- Definition

Tabular disclosure of the reconciliation of profit (loss) from reportable segments to the consolidated income (loss) before income tax expense (benefit) and discontinued operations. Includes, but is not limited to, reconciliation after income tax if income tax is allocated to the reportable segment.

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Tabular disclosure of the profit or loss and total assets for each reportable segment. An entity discloses certain information on each reportable segment if the amounts (a) are included in the measure of segment profit or loss reviewed by the chief operating decision maker or (b) are otherwise regularly provided to the chief operating decision maker, even if not included in that measure of segment profit or loss.

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