UNAUDITED CONSOLIDATED STATEMENTS OF INCOME - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Revenues:
Net premiums earned	$ 2,620,902	$ 2,434,037	$ 7,660,610	$ 7,320,859
Net investment income	202,779	209,771	611,985	631,045
Realized investment gains (losses):
Total net realized gains (losses) on investments, and net unrealized gains (losses) on investments, trading	43,274	143,676	137,188	341,043
Net realized and unrealized gains (losses) on derivative instruments	(20,434)	5,490	(28,409)	2,774
Income (loss) from investment fund affiliates	57,656	12,156	126,735	20,756
Fee income and other	11,469	8,600	35,355	27,724
Total revenues	2,883,984	2,588,120	8,427,105	7,652,769
Expenses:
Net losses and loss expenses incurred	3,066,723	1,491,803	6,179,262	4,506,674
Claims and policy benefits	10,592	5,875	25,478	16,294
Acquisition costs	445,685	403,888	1,315,138	1,227,675
Operating expenses	409,356	508,458	1,350,172	1,546,360
Foreign exchange (gains) losses	55,017	(1,695)	46,038	(54,614)
(Gain) Loss on sale of subsidiary	0	(3,670)	0	(3,670)
Extinguishment of debt	1,582	0	1,582	0
Interest expense	33,919	49,445	138,648	157,486
Total expenses	4,022,874	2,454,104	9,056,318	7,396,205
Income (loss) before income tax and income (loss) from operating affiliates	(1,138,890)	134,016	(629,213)	256,564
Income (loss) from operating affiliates	4,872	12,410	61,185	46,478
Provision (benefit) for income tax	(60,132)	17,749	(18,034)	42,511
Net income (loss)	(1,073,886)	128,677	(549,994)	260,531
Non-controlling interests	(30,197)	58,076	39,232	124,263
Net income (loss) attributable to common shareholders	$ (1,043,689)	$ 70,601	$ (589,226)	$ 136,268
Weighted average common shares outstanding - basic (in thousands of shares)	257,022	273,660	261,203	282,442
Weighted average common shares outstanding - diluted (in thousands of shares)	261,298	277,094	265,266	286,125
Earnings (loss) per common share and common share equivalent - basic (in dollars per share)	$ (4.06)	$ 0.26	$ (2.26)	$ 0.48
Earnings (loss) per common share and common share equivalent - diluted (in dollars per share)	$ (4.06)	$ 0.25	$ (2.26)	$ 0.48
Excluding Life Funds Withheld Assets
Revenues:
Net investment income	$ 171,983	$ 170,834	$ 516,386	$ 511,402
Realized investment gains (losses):
Net realized gains (losses) on investments sold	35,387	68,414	96,858	131,568
Other-than-temporary impairments on investments	(3,598)	(10,019)	(11,632)	(62,379)
Other-than-temporary impairments on investments transferred to (from) other comprehensive income	(63)	0	(113)	258
Life Funds Withheld Assets
Revenues:
Net investment income	30,796	38,937	95,599	119,643
Realized investment gains (losses):
Net realized gains (losses) on investments sold	18,879	44,011	83,131	108,541
Other-than-temporary impairments on investments	0	0	0	(2,598)
Net unrealized gains (losses) on investments, trading securities	(7,331)	41,270	(31,056)	165,653
Net realized and unrealized gains (losses) on derivative instruments	$ (31,662)	$ (225,610)	$ (116,359)	$ (691,432)