Goodwill and Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2011

Goodwill And Intangible Assets [Abstract]

Schedule Of Goodwill And Intangible Assets Rollforward Table

				Definite-		Indefinite-
				lived intangible		lived intangible
2011		Goodwill		assets		asset		Total
Balance at January 1, 2011	$	455,533	$	171,365	$	7,350	$	634,248
Intangible assets amortization		—		(44,848)		—		(44,848)
Balance at December 31, 2011	$	455,533	$	126,517	$	7,350	$	589,400
				Definite-		Indefinite-
				lived intangible		lived intangible
2010		Goodwill		assets		asset		Total
Balance at January 1, 2010	$	455,533	$	239,919	$	7,350	$	702,802
Intangible assets amortization		—		(68,554)		—		(68,554)
Balance at December 31, 2010	$	455,533	$	171,365	$	7,350	$	634,248

Schedule Of Definite And Indefinite Lived Intangible Assets Table

		2011				2010
			Gross carrying		Accumulated		Gross carrying		Accumulated
			value		amortization		value		amortization
Definite-lived intangible assets:
	Unpaid losses and loss expenses	$	191,196	$	72,854	$	191,196	$	44,076
	Unearned premiums		56,300		56,300		56,300		51,130
	Renewal rights		32,700		24,525		32,700		13,625
Total definite-lived intangible assets		$	280,196	$	153,679	$	280,196	$	108,831
Indefinite-lived intangible asset:
	U.S. insurance licenses		7,350		—		7,350		—
Total intangible assets		$	287,546	$	153,679	$	287,546	$	108,831

Allocation of Goodwill by Segment

			Amount
Non-life segment:
	North America	$	82,026
	Global (Non-U.S.) P&C		149,895
	Global (Non-U.S.) Specialty		179,641
	Catastrophe		26,014
Life segment			17,957
Total goodwill		$	455,533

Schedule Of Expected Amortization Expense

Period		Amount
2012	$	31,799
2013		19,479
2014		15,950
2015		13,900
2016		12,034
Total	$	93,162