Consolidated Statements of Cash Flows (USD $) In Thousands	9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010
Operating activities
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	$ 36,549	$ 33,895
Adjustments to reconcile net income to net cash provided by operating activities:
Interest sensitive and index product benefits	621,317	584,842
Amortization of deferred sales inducements	22,892	21,516
Annuity product charges	(57,259)	(52,673)
Change in fair value of embedded derivatives	(138,225)	(11,513)
Increase in traditional life and accident and health insurance reserves	70,612	20,777
Policy acquisition costs deferred	(342,299)	(260,837)
Amortization of deferred policy acquisition costs	65,155	73,980
Provision for depreciation and other amortization	14,113	7,391
Amortization of discounts and premiums on investments	(115,340)	(188,044)
Realized gains on investments and net OTTI losses recognized	37,030	(14,233)
Change in fair value of derivatives	205,264	30,876
Deferred income taxes	(78,920)	(100,804)
Loss on extinguishment of debt	0	292
Share-based compensation	5,591	6,624
Change in accrued investment income	(45,147)	(34,854)
Change in income taxes recoverable/payable	(11,902)	95,924
Change in other assets	4,375	(10,061)
Change in other policy funds and contract claims	152,508	64,545
Change in collateral held for derivatives	(284,870)	(157,791)
Change in other liabilities	(61,921)	25,439
Other	516	421
Net cash provided by operating activities	100,039	135,712
Sales, maturities, or repayments of investments:
Fixed maturity securities - available for sale	3,433,977	3,084,551
Fixed maturity securities - held for investment	0	1,585,267
Equity securities - available for sale	2,958	31,665
Mortgage loans on real estate	133,560	111,305
Derivative instruments	432,411	406,563
Other investments	91	0
Acquisition of investments:
Fixed maturity securities - available for sale	(3,685,523)	(5,620,989)
Fixed maturity securities - held for investment	(1,940,163)	(215,870)
Equity securities - available for sale	0	(10,125)
Mortgage loans on real estate	(413,536)	(203,606)
Derivative instruments	(295,099)	(241,962)
Short-term investments	0	(599,746)
Other investments	(77,189)	(533)
Purchases of property, furniture and equipment	(4,643)	(5,342)
Net cash used in investing activities	(2,413,156)	(1,678,822)
Financing activities
Receipts credited to annuity policyholder account balances	3,718,010	3,114,235
Coinsurance deposits	(80,932)	(248,488)
Return of annuity policyholder account balances	(1,357,892)	(1,189,388)
Financing fees incurred and deferred	(1,566)	(6,742)
Proceeds from notes payable	0	200,000
Repayments of notes payable	0	(156,641)
Purchase of call spread - 2015 Notes Hedges	0	(37,000)
Acquisition of common stock	(13)	(50)
Excess tax benefits realized from share-based compensation plans	1,060	256
Proceeds from issuance of common stock	4,461	2,723
Proceeds from issuance of warrants	0	15,600
Change in checks in excess of cash balance	4,537	(14,878)
Net cash provided by financing activities	2,287,665	1,679,627
Increase in cash and cash equivalents	(25,452)	136,517
Cash and cash equivalents at beginning of period	597,766	528,002
Cash and cash equivalents at end of period	572,314	664,519
Cash paid during period for:
Interest expense	22,129	17,101
Income taxes	108,800	121,488
Income tax refunds received	0	100,000
Non-cash operating activity:
Deferral of sales inducements	281,376	244,979
Non-cash investing activity:
Real estate acquired in satisfaction of mortgage loans	17,358	7,408
Mortgage loan on real estate sold	1,215	0
Non-cash financing activities:
Conversion of subordinated debentures	$ 0	$ 56