Industry Segments (Tables)

3 Months Ended

Mar. 31, 2014

Segment Reporting [Abstract]

Financial Information Of Company Operating Segments

	Revenues
(In thousands)	Earned Premiums		Investment Income		Other		Total		Pre-Tax Income (Loss)			Net Income (Loss)
Three months ended March 31, 2014:
Insurance-Domestic	$	1,003,507	$	118,137	$	28,766	$	1,150,410	$	202,185		$	138,036
Insurance-International	185,324		16,652		—		201,976		17,747			12,468
Reinsurance-Global	174,781		27,578		—		202,359		32,074			22,392
Corporate and eliminations (1)	—		6,344		93,063		99,407		(57,175		)	(37,513		)
Net investment gains	—		—		52,754		52,754		52,754			34,290
Total	$	1,363,612	$	168,711	$	174,583	$	1,706,906	$	247,585		$	169,673
Three months ended March 31, 2013:
Insurance-Domestic	$	884,378	$	97,797	$	26,736	$	1,008,911	$	141,350		$	99,408
Insurance-International	171,119		12,061		—		183,180		22,382			15,477
Reinsurance-Global	176,622		22,499		—		199,121		37,941			26,394
Corporate and eliminations (1)	—		3,572		92,016		95,588		(61,419		)	(37,644		)
Net investment gains	—		—		19,969		19,969		19,969			12,980
Total	$	1,232,119	$	135,929	$	138,721	$	1,506,769	$	160,223		$	116,615

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(1) Corporate and eliminations represent corporate revenues and expenses that are not allocated to business segments.

Identifiable Assets By Segment

Identifiable assets by segment are as follows:

(In thousands)	March 31, 2014		December 31, 2013
Insurance-Domestic	$	15,177,789	$	15,247,807
Insurance-International	1,805,842		1,516,310
Reinsurance-Global	2,835,292		3,103,193
Corporate and eliminations	885,344		684,486
Total	$	20,704,267	$	20,551,796

Net Premiums Earned By Major Line Of Business

Net premiums earned by major line of business are as follows:

	For the Three Months
	Ended March 31,
(In thousands)	2014		2013
Insurance-Domestic:
Other liability	$	339,633	$	295,588
Workers’ compensation	263,032		229,011
Short-tail lines	204,766		178,749
Commercial automobile	124,368		116,122
Professional liability	71,708		64,908
Total	1,003,507		884,378
Insurance-International:
Other liability	19,375		15,218
Workers’ compensation	17,325		22,889
Short-tail lines	96,274		72,123
Commercial automobile	27,593		34,639
Professional liability	24,757		26,250
Total	185,324		171,119
Reinsurance-Global:
Casualty	125,603		121,327
Property	49,178		55,295
Total	174,781		176,622
Total	$	1,363,612	$	1,232,119