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Segment Reporting (Tables)

3 Months Ended

Mar. 31, 2019

Segment Reporting [Abstract]

Schedule Of Underwriting Results For Operating Segments

		Three Months Ended
U.S. Reinsurance		March 31,
(Dollars in thousands)		2019				2018
Gross written premiums		$	764,146			$	644,222
Net written premiums			669,707				545,831
Premiums earned		$	626,471			$	563,385
Incurred losses and LAE			320,104				545,193
Commission and brokerage			167,102				127,320
Other underwriting expenses			15,591				16,886
Underwriting gain (loss)		$	123,674			$	(126,014	)

		Three Months Ended
International		March 31,
(Dollars in thousands)		2019				2018
Gross written premiums		$	400,054			$	366,724
Net written premiums			375,505				345,155
Premiums earned		$	350,935			$	343,604
Incurred losses and LAE			254,135				127,024
Commission and brokerage			81,425				82,177
Other underwriting expenses			8,681				10,576
Underwriting gain (loss)		$	6,694			$	123,827

		Three Months Ended
Bermuda		March 31,
(Dollars in thousands)		2019				2018
Gross written premiums		$	367,851			$	415,686
Net written premiums			349,341				394,968
Premiums earned		$	330,113			$	319,134
Incurred losses and LAE			197,959				129,513
Commission and brokerage			74,110				81,487
Other underwriting expenses			11,497				10,133
Underwriting gain (loss)		$	46,547			$	98,001

		Three Months Ended
Insurance		March 31,
(Dollars in thousands)		2019				2018
Gross written premiums		$	595,057			$	504,975
Net written premiums			457,145				386,252
Premiums earned		$	425,178			$	393,304
Incurred losses and LAE			276,352				255,447
Commission and brokerage			66,837				66,655
Other underwriting expenses			63,216				58,689
Underwriting gain (loss)		$	18,773			$	12,513

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

		Three Months Ended
		March 31,
(Dollars in thousands)		2019				2018
Underwriting gain (loss)		$	195,688			$	108,327
Net investment income			140,976				138,294
Net realized capital gains (losses)			92,232				(24,901	)
Net derivative gain (loss)			3,231				273
Corporate expenses			(6,652	)			(8,996	)
Interest, fee and bond issue cost amortization expense			(7,631	)			(7,418	)
Other income (expense)			(9,053	)			12,064
Income (loss) before taxes		$	408,791			$	217,643

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

		Three Months Ended
		March 31,
(Dollars in thousands)		2019				2018
United Kingdom gross written premium		$	263,857			$	258,259

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- 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 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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