CONSOLIDATED CONDENSED STATEMENTS OF INCOME (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Revenues
Premiums and policy fees	$ 752,752	$ 707,720	$ 1,475,952	$ 1,400,118
Reinsurance ceded	(396,777)	(336,119)	(722,617)	(632,414)
Net of reinsurance ceded	355,975	371,601	753,335	767,704
Net investment income	447,064	438,648	886,076	882,180
Realized investment gains (losses):
Derivative financial instruments	66,591	(47,768)	70,198	(77,677)
All other investments	(110,227)	67,879	(114,473)	103,362
Other-than-temporary impairment losses	(1,789)	(13,582)	(3,129)	(47,681)
Portion recognized in other comprehensive income (before taxes)	(2,211)	140	(5,455)	15,643
Net impairment losses recognized in earnings	(4,000)	(13,442)	(8,584)	(32,038)
Other income	60,638	50,121	115,072	125,263
Total revenues	816,041	867,039	1,701,624	1,768,794
Benefits and expenses
Benefits and settlement expenses, net of reinsurance ceded: (three months: 2013 - $371,758; 2012 - $307,012; six months: 2013 - $678,336; 2012 - $589,788)	555,894	565,414	1,136,870	1,152,423
Amortization of deferred policy acquisition costs and value of business acquired	49,688	64,150	99,727	117,837
Other operating expenses, net of reinsurance ceded: (three months: 2013 - $51,018; 2012 - $46,931; six months: 2013 - $92,764; 2012 - $94,682)	131,532	120,410	276,286	240,401
Total benefits and expenses	737,114	749,974	1,512,883	1,510,661
Income before income tax	78,927	117,065	188,741	258,133
Income tax expense	25,923	35,438	61,859	80,650
Net income	$ 53,004	$ 81,627	$ 126,882	$ 177,483