Fair Value Disclosures (Details) (USD $) In Thousands	Jun. 30, 2011	Dec. 31, 2010	Jun. 30, 2010	Dec. 31, 2009
Assets
Fixed maturity securities	$ 15,153,807	$ 14,304,597
Mortgage loans on real estate	908,048	885,811
Policy loans	1,229,663	1,228,418
Funds withheld at interest	5,671,844	5,421,952
Short-term investments	125,618	118,387
Other invested assets	799,341	707,403
Cash and cash equivalents	710,973	463,661	557,756	512,027
Accrued Investment Income	160,436	127,874
Reinsurance ceded receivables	781,006	769,699
Liabilities
Interest-sensitive contract liabilities	8,100,608	7,774,481
Collateral finance facility	837,789	850,039
Company-obligated mandatorily redeemable preferred securities	0	159,421
Carrying Value Member
Assets
Fixed maturity securities	15,153,807	14,304,597
Mortgage loans on real estate	908,048	885,811
Policy loans	1,229,663	1,228,418
Funds withheld at interest	5,671,844	5,421,952
Short-term investments	125,618	118,387
Other invested assets	759,750	683,307
Cash and cash equivalents	710,973	463,661
Accrued Investment Income	160,436	127,874
Reinsurance ceded receivables	88,473	95,557
Liabilities
Interest-sensitive contract liabilities	6,163,476	5,856,945
Long And Short Term Debt	1,614,399	1,216,410
Collateral finance facility	837,789	850,039
Company-obligated mandatorily redeemable preferred securities	0	159,421
Estimated Fair Value Member
Assets
Fixed maturity securities	15,153,807	14,304,597
Mortgage loans on real estate	971,212	933,513
Policy loans	1,229,663	1,228,418
Funds withheld at interest	6,053,869	5,838,064
Short-term investments	125,618	118,387
Other invested assets	764,347	681,242
Cash and cash equivalents	710,973	463,661
Accrued Investment Income	160,436	127,874
Reinsurance ceded receivables	43,045	91,893
Liabilities
Interest-sensitive contract liabilities	5,893,885	5,866,088
Long And Short Term Debt	1,668,873	1,226,517
Collateral finance facility	527,499	514,250
Company-obligated mandatorily redeemable preferred securities	$ 0	$ 221,341

Aggregate carrying amount of short-term and long-term borrowings as of the balance sheet date. May include notes payable, bonds payable, commercial loans, subordinated debt and other types of debt, after deducting unamortized discount or premiums, if any.

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Interest, dividends, rents, ancillary and other revenues earned but not yet received by the entity on its investments.

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For an unclassified balance sheet, total of debt securities categorized neither as held-to-maturity nor trading. Such securities are reported at fair value; unrealized gains and losses of such securities are excluded from earnings and included in other comprehensive income, a separate component of shareholders' equity, unless the Available-for-sale Security is designated as a hedge or is determined to have had an other than temporary decline in fair value below its amortized cost basis. All or a portion of the unrealized holding gain or loss of an Available-for-sale Security that is designated as being hedged in a fair value hedge shall be recognized in earnings during the period of the hedge, as should other than temporary declines in fair value below costs basis.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
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The amount of the liability as of the balance sheet date pertaining to the guarantee given by the insurance entity to contract holders of a specified rate of return (a guaranteed yield) on their investments for a specified period.

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Gross amount of loans made to policy and contract holders using their life insurance contracts' cash value or separate accounts as collateral.

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Other investments not otherwise specified in the taxonomy that will be realized in a short period of time, usually less than one year or the normal operating cycle, whichever is longer.

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The known and estimated amount recoverable as of the balance sheet date from reinsurers for claims paid or incurred by the ceding insurer and associated claims settlement expenses, including estimated amounts for claims incurred but not reported, and policy benefits, net of any related valuation allowance.

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