Reserve For Losses And Loss Expenses (Tables)

9 Months Ended

Sep. 30, 2012

Reserve For Losses And Loss Expenses [Abstract]

Components of liabilty for unpaid losses and loss expenses

	September 30,		December 31,
	2012		2011
Outstanding loss reserves	$	1,430,923	$	1,366,466
Reserves for losses incurred but not reported		4,019,864		3,858,677
Reserve for losses and loss expenses	$	5,450,787	$	5,225,143

Reconciliation of beginning and ending liability for unpaid losses and loss expenses

		Three Months Ended				Nine Months Ended
		September 30,				September 30,
		2012		2011		2012		2011
Gross liability at beginning of period		$	5,377,518	$	5,251,304	$	5,225,143	$	4,879,188
Reinsurance recoverable at beginning of period			(1,073,612)		(1,013,951)		(1,002,919)		(927,588)
Net liability at beginning of period			4,303,906		4,237,353		4,222,224		3,951,600
Net losses incurred related to:
	Commutation of variable-rated reinsurance contracts		0		0		0		11,529
	Current year		315,102		267,070		862,088		895,386
	Prior years		(56,154)		(61,524)		(137,558)		(161,104)
	Total incurred		258,948		205,546		724,530		745,811
Net paid losses related to:
	Current year		16,323		43,723		36,163		65,002
	Prior years		179,666		150,767		542,077		394,363
	Total paid		195,989		194,490		578,240		459,365
Foreign exchange revaluation			6,400		(12,499)		4,751		(2,136)
Net liability at end of period			4,373,265		4,235,910		4,373,265		4,235,910
Reinsurance recoverable at end of period			1,077,522		1,009,643		1,077,522		1,009,643
Gross liability at end of period		$	5,450,787	$	5,245,553	$	5,450,787	$	5,245,553