Unpaid Losses and Loss Expenses and Policy Benefits for Life and Annuity Contracts (Tables)

12 Months Ended

Dec. 31, 2014

Liability for Future Policy Benefits and Unpaid Claims and Claims Adjustment Expense [Abstract]

Schedule Of Unpaid Losses And Loss Expenses By Type Table [Text Block]

The Company’s gross liability for unpaid losses and loss expenses reported by cedants (case reserves) and those estimated by the Company (ACRs and IBNR reserves) at December 31, 2014 and 2013 was as follows (in thousands of U.S. dollars):

	2014		2013
Case reserves	$	4,236,038	$	4,663,164
ACRs	253,890		403,145
IBNR reserves	5,255,878		5,580,009
Total unpaid losses and loss expenses	$	9,745,806	$	10,646,318

Schedule Of Liability For Unpaid Claims And Claims Adjustment Expense [Text Block]

The reconciliation of the beginning and ending gross and net liability for unpaid losses and loss expenses, excluding policy benefits for life and annuity contracts, for the years ended December 31, 2014, 2013 and 2012 was as follows (in thousands of U.S. dollars):

	2014			2013			2012
Gross liability at beginning of year	$	10,646,318		$	10,709,371		$	11,273,091
Reinsurance recoverable at beginning of year	267,384			291,330			353,105
Net liability at beginning of year	10,378,934			10,418,041			10,919,986
Net incurred losses related to:
Current year	3,122,981			3,118,755			2,785,694
Prior years	(660,413		)	(721,499		)	(628,065		)
	2,462,568			2,397,256			2,157,629
Change in Paris Re Reserve Agreement	(25,412		)	(49,544		)	(86,163		)
Net paid losses related to:
Current year	267,806			242,053			237,783
Prior years	2,530,743			2,159,506			2,467,279
	2,798,549			2,401,559			2,705,062
Effects of foreign exchange rate changes	(486,084		)	14,740			131,651
Net liability at end of year	9,531,457			10,378,934			10,418,041
Reinsurance recoverable at end of year	214,349			267,384			291,330
Gross liability at end of year	$	9,745,806		$	10,646,318		$	10,709,371

Reconciliation Of Loss And Loss Expenses Including Life Policy Benefits Table [Text Block]

The reconciliation of losses and loss expenses including life policy benefits for the years ended December 31, 2014, 2013 and 2012 was as follows (in thousands of U.S. dollars):

	2014		2013		2012
Net incurred losses related to:
Non-life	$	2,462,568	$	2,397,256	$	2,157,629
Life and Health	1,000,202		760,552		646,981
Losses and loss expenses and life policy benefits	$	3,462,770	$	3,157,808	$	2,804,610

Net Non Life Prior Year Loss Development Table [Text Block]

The net favorable prior year loss development for each of the Company’s Non-life sub-segments for the years ended December 31, 2014, 2013 and 2012 was as follows (in thousands of U.S. dollars):

	2014		2013		2012
Net favorable prior year loss development:
Non-life sub-segment
North America	$	250,942	$	222,839	$	218,483
Global (Non-U.S.) P&C	134,394		180,052		114,279
Global Specialty	257,696		227,383		250,523
Catastrophe	17,381		91,225		44,780
Total net favorable prior year loss development	$	660,413	$	721,499	$	628,065