CONDENSED CONSOLIDATED STATEMENTS OF INCOME - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Revenues:
Net premiums	$ 2,157,005	$ 2,023,852
Investment income, net of related expenses	417,266	426,891
Investment related gains (losses), net:
Other-than-temporary impairments on fixed maturity securities	(33,817)	(2,527)
Other investment related gains (losses), net	(87,069)	10,110
Total investment related gains (losses), net	(120,886)	7,583
Other revenues	59,183	62,287
Total revenues	2,512,568	2,520,613
Benefits and Expenses:
Claims and other policy benefits	1,886,764	1,775,451
Interest credited	87,905	120,678
Policy acquisition costs and other insurance expenses	233,763	277,043
Other operating expenses	157,424	121,618
Interest expense	32,807	35,627
Collateral finance and securitization expense	6,325	6,071
Total benefits and expenses	2,404,988	2,336,488
Income before income taxes	107,580	184,125
Provision for income taxes	31,108	59,011
Net income	$ 76,472	$ 125,114
Earnings per share:
Basic earnings per share	$ 1.18	$ 1.84
Diluted earnings per share	1.17	1.81
Dividends declared per share	$ 0.37	$ 0.33