CONDENSED CONSOLIDATED STATEMENTS OF INCOME (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Revenues:
Net premiums	$ 2,183,160	$ 2,035,156	$ 4,283,797	$ 4,014,849
Investment income, net of related expenses	410,607	444,234	814,982	869,365
Investment related gains (losses), net:
Other-than-temporary impairments on fixed maturity securities	(870)	(9,803)	(1,173)	(10,005)
Other-than-temporary impairments on fixed maturity securities transferred to (from) accumulated other comprehensive income	0	(306)	0	(306)
Other investment related gains (losses), net	119,397	58,352	204,271	152,925
Total investment related gains (losses), net	118,527	48,243	203,098	142,614
Other revenues	120,726	63,009	188,316	164,916
Total revenues	2,833,020	2,590,642	5,490,193	5,191,744
Benefits and Expenses:
Claims and other policy benefits	1,841,885	2,030,574	3,685,562	3,719,484
Interest credited	115,962	118,345	226,556	243,828
Policy acquisition costs and other insurance expenses	409,374	370,505	764,247	727,862
Other operating expenses	127,462	113,408	238,398	232,909
Interest expense	35,211	29,918	70,295	58,404
Collateral finance facility expense	2,591	2,650	5,160	5,188
Total benefits and expenses	2,532,485	2,665,400	4,990,218	4,987,675
Income (loss) before income taxes	300,535	(74,758)	499,975	204,069
Provision for income taxes	102,239	(25,146)	165,015	68,146
Net income (loss)	$ 198,296	$ (49,612)	$ 334,960	$ 135,923
Earnings per share:
Basic earnings per share	$ 2.87	$ (0.69)	$ 4.80	$ 1.86
Diluted earnings per share	$ 2.84	$ (0.69)	$ 4.75	$ 1.85
Dividends declared per share	$ 0.30	$ 0.24	$ 0.60	$ 0.48