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Segment Reporting (Tables)

3 Months Ended

Mar. 31, 2021

Segment Reporting [Abstract]

Schedule Of Underwriting Results For Operating Segments

	Three Months Ended
Reinsurance	March 31,
(Dollars in thousands)	2021			2020
Gross written premiums	$	2,059,015		$	1,777,771
Net written premiums		1,912,950			1,613,094
Premiums earned	$	1,777,452		$	1,485,221
Incurred losses and LAE		1,271,906			1,020,642
Commission and brokerage		408,724			370,356
Other underwriting expenses		51,996			44,139
Underwriting gain (loss)	$	44,826		$	50,084

	Three Months Ended
Insurance	March 31,
(Dollars in thousands)	2021			2020
Gross written premiums	$	872,418		$	793,100
Net written premiums		640,987			588,385
Premiums earned	$	610,413		$	551,593
Incurred losses and LAE		439,513			410,198
Commission and brokerage		80,287			78,166
Other underwriting expenses		90,235			84,721
Underwriting gain (loss)	$	378		$	(21,492)

Schedule Of Underwriting Results For Operating Segments To Income (Loss) Before Taxes

	Three Months Ended
	March 31,
(Dollars in thousands)	2021			2020
Underwriting gain (loss)	$	45,204		$	28,592
Net investment income		260,413			147,800
Net realized capital gains (losses)		38,902			(210,588)
Corporate expenses		(12,378)			(9,833)
Interest, fee and bond issue cost amortization expense		(15,639)			(7,583)
Other income (expense)		56,593			7,990
Income (loss) before taxes	$	373,095		$	(43,622)

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

	Three Months Ended
	March 31,
(Dollars in thousands)	2021			2020
United Kingdom gross written premium	$	366,148		$	306,708

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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- Definition

Tabular disclosure of revenue from external customers by geographic areas attributed to the entity's country of domicile and to foreign countries from which the entity derives revenue.

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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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