UNAUDITED CONSOLIDATED STATEMENTS OF INCOME - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Revenues:
Net premiums earned	$ 2,522,791	$ 2,354,610
Net investment income	200,532	205,886
Realized investment gains (losses):
Total net realized gains (losses) on investments, and net unrealized gains (losses) on investments, Trading	37,286	92,750
Net realized and unrealized gains (losses) on derivative instruments	(7,069)	(3,622)
Income (loss) from investment fund affiliates	38,261	(4,579)
Fee income and other	13,661	8,262
Total revenues	2,755,361	2,417,227
Expenses:
Net losses and loss expenses incurred	1,583,456	1,382,485
Claims and policy benefits	7,291	4,937
Acquisition costs	435,869	403,267
Operating expenses	468,038	515,381
Foreign exchange (gains) losses	(3,336)	(33,819)
Interest expense	50,711	52,303
Total expenses	2,542,029	2,324,554
Income (loss) before income tax and income (loss) from operating affiliates	213,332	92,673
Income (loss) from operating affiliates	13,609	12,650
Provision (benefit) for income tax	13,092	22,295
Net income (loss)	213,849	83,028
Non-controlling interests	61,006	61,143
Net income (loss) attributable to common shareholders	$ 152,843	$ 21,885
Weighted average common shares outstanding - basic (in thousands of shares)	265,690	291,969
Weighted average common shares outstanding - diluted (in thousands of shares)	269,767	296,666
Earnings (loss) per common share and common share equivalent - basic (in dollars per share)	$ 0.58	$ 0.07
Earnings (loss) per common share and common share equivalent - diluted (in dollars per share)	$ 0.57	$ 0.07
Excluding Life Funds Withheld Assets
Revenues:
Net investment income	$ 167,168	$ 164,326
Realized investment gains (losses):
Net realized gains (losses) on investments sold	11,092	11,164
Other-than-temporary impairments on investments	(6,874)	(19,582)
Other-than-temporary impairments on investments transferred to (from) other comprehensive income	0	2
Life Funds Withheld Assets
Revenues:
Net investment income	33,364	41,560
Realized investment gains (losses):
Net realized gains (losses) on investments sold	34,474	34,416
Other-than-temporary impairments on investments	0	(2,346)
Net unrealized gains (losses) on investments, trading securities	(1,406)	69,096
Net realized and unrealized gains (losses) on derivative instruments	$ (50,101)	$ (236,080)