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Investments (Tables)

9 Months Ended

Sep. 30, 2013

Investments [Abstract]

Available For Sale Securities

The following tables provide information relating to investments in fixed maturity and equity securities by sector as of September 30, 2013 and December 31, 2012 (dollars in thousands):

September 30, 2013:		Amortized				Unrealized				Unrealized				Estimated Fair				% of			Other-than- temporary impairments
		Cost				Gains				Losses				Value				Total			in AOCI
Available-for-sale:
Corporate securities		$	11,505,673			$	637,691			$	208,802			$	11,934,562			56.1	%		$	—
Canadian and Canadian provincial governments		2,719,147				785,840				13,831				3,491,156				16.4			—
Residential mortgage-backed securities		922,581				44,948				15,691				951,838				4.5			(300		)
Asset-backed securities		883,495				19,264				17,481				885,278				4.1			(2,259		)
Commercial mortgage-backed securities		1,371,473				102,207				20,566				1,453,114				6.8			(1,609		)
U.S. government and agencies		413,254				20,412				2,819				430,847				2.0			—
State and political subdivisions		288,757				22,626				13,654				297,729				1.4			—
Other foreign government, supranational and foreign government-sponsored enterprises		1,812,970				50,246				18,632				1,844,584				8.7			—
Total fixed maturity securities		$	19,917,350			$	1,683,234			$	311,476			$	21,289,108			100.0	%		$	(4,168	)
Non-redeemable preferred stock		$	80,985			$	5,187			$	3,333			$	82,839			56.4	%
Other equity securities		68,123				—				4,052				64,071				43.6
Total equity securities		$	149,108			$	5,187			$	7,385			$	146,910			100.0	%

December 31, 2012:		Amortized				Unrealized				Unrealized				Estimated Fair				% of			Other-than- temporary impairments
		Cost				Gains				Losses				Value				Total			in AOCI
Available-for-sale:
Corporate securities		$	11,333,431			$	1,085,973			$	39,333			$	12,380,071			55.5	%		$	—
Canadian and Canadian provincial governments		2,676,777				1,372,731				174				4,049,334				18.2			—
Residential mortgage-backed securities		969,267				76,520				3,723				1,042,064				4.7			(241		)
Asset-backed securities		700,455				19,898				28,798				691,555				3.1			(2,259		)
Commercial mortgage-backed securities		1,608,376				142,369				51,842				1,698,903				7.6			(6,125		)
U.S. government and agencies		231,256				33,958				24				265,190				1.2			—
State and political subdivisions		270,086				38,058				5,646				302,498				1.4			—
Other foreign government, supranational and foreign government-sponsored enterprises		1,769,784				94,929				2,714				1,861,999				8.3			—
Total fixed maturity securities		$	19,559,432			$	2,864,436			$	132,254			$	22,291,614			100.0	%		$	(8,625	)
Non-redeemable preferred stock		$	68,469			$	6,542			$	170			$	74,841			33.6	%
Other equity securities		148,577				416				1,134				147,859				66.4
Total equity securities		$	217,046			$	6,958			$	1,304			$	222,700			100.0	%

Investments Classified By Contractual Maturity Date

At September 30, 2013, the contractual maturities of investments in fixed maturity securities were as follows (dollars in thousands):

		Amortized Cost				Fair Value
Available-for-sale:
Due in one year or less		$	416,152			$	421,874
Due after one year through five years		3,712,227				3,890,251
Due after five years through ten years		6,800,712				7,027,350
Due after ten years		5,810,710				6,659,403
Asset and mortgage-backed securities		3,177,549				3,290,230
Total		$	19,917,350			$	21,289,108

Fixed Maturity Holdings Industry Types Weighted Average Credit Ratings [Table Text Block]

The tables below show the major industry types of the Company’s corporate fixed maturity holdings as of September 30, 2013 and December 31, 2012 (dollars in thousands):

September 30, 2013:						Estimated
		Amortized Cost				Fair Value				% of Total
Finance		$	3,728,120			$	3,870,583			32.4	%
Industrial		5,926,283				6,125,796				51.3
Utility		1,829,273				1,916,477				16.1
Other		21,997				21,706				0.2
Total		$	11,505,673			$	11,934,562			100.0	%
December 31, 2012:						Estimated
		Amortized Cost				Fair Value				% of Total
Finance		$	3,619,455			$	3,900,152			31.5	%
Industrial		5,881,967				6,443,846				52.0
Utility		1,799,658				2,002,611				16.2
Other		32,351				33,462				0.3
Total		$	11,333,431			$	12,380,071			100.0	%

RollForward Of Cumulative Credit Loss Component Of OTTI Income Loss

The following table sets forth the amount of pre-tax credit loss impairments on fixed maturity securities held by the Company as of the dates indicated, for which a portion of the OTTI loss was recognized in AOCI, and the corresponding changes in such amounts (dollars in thousands):

		Three months ended September 30,
		2013				2012
Balance, beginning of period		$	13,324			$	45,903
Initial impairments - credit loss OTTI recognized on securities not previously impaired		—				—
Additional impairments - credit loss OTTI recognized on securities previously impaired		134				1,306
Credit loss OTTI previously recognized on securities impaired to fair value during the period		—				(2,622		)
Credit loss OTTI previously recognized on securities which matured, paid down, prepaid or were sold during the period		(1,762		)		(20,725		)
Balance, end of period		$	11,696			$	23,862
		Nine months ended September 30,
		2013				2012
Balance, beginning of period		$	16,675			$	63,947
Initial impairments - credit loss OTTI recognized on securities not previously impaired		—				1,962
Additional impairments - credit loss OTTI recognized on securities previously impaired		134				10,187
Credit loss OTTI previously recognized on securities impaired to fair value during the period		(1,449		)		(22,291		)
Credit loss OTTI previously recognized on securities which matured, paid down, prepaid or were sold during the period		(3,664		)		(29,943		)
Balance, end of period		$	11,696			$	23,862

Accounting for Certain Loans and Debt Securities Acquired in Transfer Disclosure [Text Block]

The following tables present information on the Company’s purchased credit impaired securities, which are included in fixed maturity securities available-for-sale (dollars in thousands):

		September 30, 2013				December 31, 2012
Outstanding principal and interest balance(1)		$	186,379			$	108,831
Carrying value, including accrued interest(2)		$	135,862			$	84,765

(1) Represents the contractually required payments which is the sum of contractual principal, whether or not currently due, and accrued interest.

(2) Estimated fair value plus accrued interest.

Schedule Of Certain Loans Acquired In Transfer Accounted For As Available For Sale Debt Securities At Acquisition Date [Table Text Block]

The following table presents information about purchased credit impaired investments acquired during the periods, as of their acquisition dates (dollars in thousands).

	Nine months ended September 30,
	2013				2012
Contractually required payments (including interest)	$	126,869			$	50,268
Cash flows expected to be collected(1)	101,205				42,316
Fair value of investments acquired	66,880				30,853

(1) Represents undiscounted principal and interest cash flow expectations at the date of acquisition.

Schedule Of Certain Loans Acquired In Transfer Accounted For As Available For Sale Debt Securities Accretable Yield [Table Text Block]

The following table presents activity for the accretable yield on purchased credit impaired securities for the three and nine months ended September 30, 2013 and 2012 (dollars in thousands):

	Three months ended September 30,								Nine months ended September 30,
	2013				2012				2013				2012
Balance, beginning of period	$	66,269			$	—			$	39,239			$	—
Investments purchased	4,374				11,463				34,325				11,463
Accretion	(1,952		)		(6		)		(5,774		)		(6		)
Disposals	—				—				(832		)		—
Reclassification from nonaccretable difference	1,388				—				3,121				—
Balance, end of period	$	70,079			$	11,457			$	70,079			$	11,457

Investments In Debt And Equity Securities Gross Unrealized Losses Disclosures

The following table presents the total gross unrealized losses for the 1,397 and 567 fixed maturity and equity securities as of September 30, 2013 and December 31, 2012, respectively, where the estimated fair value had declined and remained below amortized cost by the indicated amount (dollars in thousands):

		September 30, 2013							December 31, 2012
		Gross Unrealized Losses				% of Total			Gross Unrealized Losses				% of Total
Less than 20%		$	286,594			89.9	%		$	54,951			41.2	%
20% or more for less than six months		6,325				2.0			734				0.5
20% or more for six months or greater		25,942				8.1			77,873				58.3
Total		$	318,861			100.0	%		$	133,558			100.0	%

Fair Value And Investments In Debt And Marketable Equity Securities And Certain Trading Assets Disclosures

		Less than 12 months								12 months or greater								Total
						Gross								Gross								Gross
September 30, 2013:		Estimated				Unrealized				Estimated				Unrealized				Estimated				Unrealized
		Fair Value				Losses				Fair Value				Losses				Fair Value				Losses
Investment grade securities:
Corporate securities		$	3,158,429			$	168,659			$	130,027			$	20,031			$	3,288,456			$	188,690
Canadian and Canadian provincial governments		140,648				12,530				6,898				1,301				147,546				13,831
Residential mortgage-backed securities		207,602				11,909				18,997				2,257				226,599				14,166
Asset-backed securities		270,863				4,602				53,786				5,571				324,649				10,173
Commercial mortgage-backed securities		188,153				6,565				22,435				5,968				210,588				12,533
U.S. government and agencies		72,032				2,658				3,958				161				75,990				2,819
State and political subdivisions		95,935				8,776				14,981				4,878				110,916				13,654
Other foreign government, supranational and foreign government-sponsored enterprises		644,427				17,479				10,589				1,153				655,016				18,632
Total investment grade securities		4,778,089				233,178				261,671				41,320				5,039,760				274,498
Non-investment grade securities:
Corporate securities		311,613				12,155				42,024				7,957				353,637				20,112
Residential mortgage-backed securities		53,633				1,068				2,254				457				55,887				1,525
Asset-backed securities		29,043				467				30,901				6,841				59,944				7,308
Commercial mortgage-backed securities		971				25				10,905				8,008				11,876				8,033
Total non-investment grade securities		395,260				13,715				86,084				23,263				481,344				36,978
Total fixed maturity securities		$	5,173,349			$	246,893			$	347,755			$	64,583			$	5,521,104			$	311,476
Non-redeemable preferred stock		$	42,338			$	3,331			$	1			$	2			$	42,339			$	3,333
Other equity securities		47,151				2,619				17,028				1,433				64,179				4,052
Total equity securities		$	89,489			$	5,950			$	17,029			$	1,435			$	106,518			$	7,385

		Less than 12 months								12 months or greater								Total
						Gross								Gross								Gross
December 31, 2012:		Estimated				Unrealized				Estimated				Unrealized				Estimated				Unrealized
		Fair Value				Losses				Fair Value				Losses				Fair Value				Losses
Investment grade securities:
Corporate securities		$	786,203			$	13,276			$	108,187			$	17,386			$	894,390			$	30,662
Canadian and Canadian provincial governments		12,349				174				—				—				12,349				174
Residential mortgage-backed securities		22,288				97				19,394				3,199				41,682				3,296
Asset-backed securities		59,119				449				96,179				9,508				155,298				9,957
Commercial mortgage-backed securities		89,507				797				29,181				7,974				118,688				8,771
U.S. government and agencies		7,272				24				—				—				7,272				24
State and political subdivisions		20,602				1,514				11,736				4,132				32,338				5,646
Other foreign government, supranational and foreign government-sponsored enterprises		244,817				1,953				7,435				761				252,252				2,714
Total investment grade securities		1,242,157				18,284				272,112				42,960				1,514,269				61,244
Non-investment grade securities:
Corporate securities		181,168				3,170				39,123				5,501				220,291				8,671
Residential mortgage-backed securities		15,199				80				2,633				347				17,832				427
Asset-backed securities		3,421				26				31,938				18,815				35,359				18,841
Commercial mortgage-backed securities		3,317				764				68,405				42,307				71,722				43,071
Total non-investment grade securities		203,105				4,040				142,099				66,970				345,204				71,010
Total fixed maturity securities		$	1,445,262			$	22,324			$	414,211			$	109,930			$	1,859,473			$	132,254
Non-redeemable preferred stock		$	5,577			$	52			$	5,679			$	118			$	11,256			$	170
Other equity securities		85,374				1,134				—				—				85,374				1,134
Total equity securities		$	90,951			$	1,186			$	5,679			$	118			$	96,630			$	1,304

Investment Income

Major categories of investment income, net of related expenses, consist of the following (dollars in thousands):

		Three months ended September 30,								Nine months ended September 30,
		2013				2012				2013				2012
Fixed maturity securities available-for-sale		$	243,938			$	221,212			$	723,772			$	633,110
Mortgage loans on real estate		33,013				26,938				89,618				67,258
Policy loans		15,743				16,519				49,103				49,637
Funds withheld at interest		80,024				127,855				376,495				305,861
Short-term investments		374				960				1,609				3,027
Investment receivable		—				—				—				—
Other invested assets		9,411				13,117				36,712				35,803
Investment revenue		382,503				406,601				1,277,309				1,094,696
Investment expense		(13,137		)		(9,820		)		(38,578		)		(28,641		)
Investment income, net of related expenses		$	369,366			$	396,781			$	1,238,731			$	1,066,055

Gain Loss On Investments

Investment related gains (losses), net consist of the following (dollars in thousands):

	Three months ended September 30,								Nine months ended September 30,
	2013				2012				2013				2012
Fixed maturities and equity securities available for sale:
Other-than-temporary impairment losses on fixed maturities	$	(391	)		$	(1,996	)		$	(10,396	)		$	(11,562	)
Portion of loss recognized in accumulated other comprehensive income (before taxes)	59				(559		)		(247		)		(7,618		)
Net other-than-temporary impairment losses on fixed maturities recognized in earnings	(332		)		(2,555		)		(10,643		)		(19,180		)
Impairment losses on equity securities	—				—				—				(3,025		)
Gain on investment activity	21,560				53,173				70,085				102,078
Loss on investment activity	(30,434		)		(6,668		)		(48,406		)		(23,090		)
Other impairment losses and change in mortgage loan provision	233				(10,301		)		(1,268		)		(14,382		)
Derivatives and other, net	(67,492		)		42,404				56,381				100,973
Total investment related gains (losses), net	$	(76,465	)		$	76,053			$	66,149			$	143,374

Disclosure Of Real Estate Holdings By Property Type [Table Text Block]

The distribution of mortgage loans, gross of valuation allowances, by property type is as follows as of September 30, 2013 and December 31, 2012 (dollars in thousands):

		September 30, 2013							December 31, 2012
		Recorded Investment				% of Total			Recorded Investment				% of Total
Apartment		$	290,678			11.7	%		$	229,266			9.9	%
Retail		796,144				31.9			669,958				29.0
Office building		854,870				34.2			825,406				35.7
Industrial		444,186				17.8			455,682				19.7
Other commercial		110,373				4.4			131,855				5.7
Total		$	2,496,251			100.0	%		$	2,312,167			100.0	%

Disclosure Of Real Estate Holdings By Geographical Region [Table Text Block]

As of September 30, 2013 and December 31, 2012, the Company’s mortgage loans, gross of valuation allowances, were distributed throughout the United States as follows (dollars in thousands):

		September 30, 2013							December 31, 2012
		Recorded Investment				% of Total			Recorded Investment				% of Total
Pacific		$	658,054			26.4	%		$	593,589			25.7	%
South Atlantic		581,781				23.3			477,068				20.5
Mountain		260,794				10.4			233,174				10.1
Middle Atlantic		269,602				10.8			300,475				13.0
West North Central		181,937				7.3			168,063				7.3
East North Central		239,997				9.6			224,122				9.7
West South Central		155,061				6.2			161,451				7.0
East South Central		67,155				2.7			62,789				2.7
New England		81,870				3.3			91,436				4.0
Total		$	2,496,251			100.0	%		$	2,312,167			100.0	%

Mortgage Loans Classified By Contractual Maturity Date [Table Text Block]

The maturities of the mortgage loans, gross of valuation allowances, as of September 30, 2013 and December 31, 2012 are as follows (dollars in thousands):

		September 30, 2013							December 31, 2012
		Recorded Investment				% of Total			Recorded Investment				% of Total
Due within five years		$	1,024,065			41.0	%		$	1,187,387			51.3	%
Due after five years through ten years		963,479				38.6			776,655				33.6
Due after ten years		508,707				20.4			348,125				15.1
Total		$	2,496,251			100.0	%		$	2,312,167			100.0	%

Mortgage Loan Internal Credit Risk Grade [Table Text Block]

Information regarding the Company’s credit quality indicators for its recorded investment in mortgage loans, gross of valuation allowances, as of September 30, 2013 and December 31, 2012 is as follows (dollars in thousands):

		September 30, 2013							December 31, 2012
Internal credit risk grade:		Recorded Investment				% of Total			Recorded Investment				% of Total
High investment grade		$	1,556,974			62.4	%		$	1,235,605			53.5	%
Investment grade		754,369				30.2			834,494				36.1
Average		106,912				4.3			132,607				5.7
Watch list		49,173				2.0			76,463				3.3
In or near default		28,823				1.1			32,998				1.4
Total		$	2,496,251			100.0	%		$	2,312,167			100.0	%

Schedule Of Analysis Of Past Due Financing Receivables

The age analysis of the Company’s past due recorded investment in mortgage loans, gross of valuation allowances, as of September 30, 2013 and December 31, 2012 is as follows (dollars in thousands):

		September 30, 2013				December 31, 2012
31-60 days past due		$	—			$	7,504
61-90 days past due		—				—
Greater than 90 days		3,046				16,886
Total past due		3,046				24,390
Current		2,493,205				2,287,777
Total		$	2,496,251			$	2,312,167

Recorded Investment And Allowance For Credit Losses

The following table presents the recorded investment in mortgage loans, by method of measuring impairment, and the related valuation allowances as of September 30, 2013 and December 31, 2012 (dollars in thousands):

		September 30, 2013				December 31, 2012
Mortgage loans:
Individually measured for impairment		$	32,624			$	39,956
Collectively measured for impairment		2,463,627				2,272,211
Mortgage loans, gross of valuation allowances		2,496,251				2,312,167
Valuation allowances:
Individually measured for impairment		4,691				6,980
Collectively measured for impairment		2,978				4,600
Total valuation allowances		7,669				11,580
Mortgage loans, net of valuation allowances		$	2,488,582			$	2,300,587

Allowance For Mortgage Loan And Lease Losses Provision For Loss Net

Information regarding the Company’s loan valuation allowances for mortgage loans for the three and nine months ended September 30, 2013 and 2012 is as follows (dollars in thousands):

		Three months ended September 30,
		2013				2012
Balance, beginning of period		$	7,903			$	11,011
Charge-offs		—				(526		)
Provision (release)		(234		)		2,848
Balance, end of period		$	7,669			$	13,333
		Nine months ended September 30,
		2013				2012
Balance, beginning of period		$	11,580			$	11,793
Charge-offs		(2,148		)		(4,595		)
Provision (release)		(1,763		)		6,135
Balance, end of period		$	7,669			$	13,333

Impaired Financing Receivables Table

Information regarding the portion of the Company’s mortgage loans that were impaired as of September 30, 2013 and December 31, 2012 is as follows (dollars in thousands):

		Unpaid Principal Balance				Recorded Investment				Related Allowance				Carrying Value
September 30, 2013:
Impaired mortgage loans with no valuation allowance recorded		$	11,762			$	11,157			$	—			$	11,157
Impaired mortgage loans with valuation allowance recorded		21,536				21,467				4,691				16,776
Total impaired mortgage loans		$	33,298			$	32,624			$	4,691			$	27,933
December 31, 2012:
Impaired mortgage loans with no valuation allowance recorded		$	13,039			$	12,496			$	—			$	12,496
Impaired mortgage loans with valuation allowance recorded		27,527				27,460				6,980				20,480
Total impaired mortgage loans		$	40,566			$	39,956			$	6,980			$	32,976
The Company’s average investment in impaired mortgage loans and the related interest income are reflected in the table below for the periods indicated (dollars in thousands):
		Three months ended September 30,
		2013								2012
		Average Investment(1)				Interest Income				Average Investment(1)				Interest Income
Impaired mortgage loans with no valuation allowance recorded		$	13,631			$	349			$	11,054			$	109
Impaired mortgage loans with valuation allowance recorded		21,490				266				35,047				461
Total		$	35,121			$	615			$	46,101			$	570
		Nine months ended September 30,
		2013								2012
		Average Investment(1)				Interest Income				Average Investment(1)				Interest Income
Impaired mortgage loans with no valuation allowance recorded		$	13,504			$	533			$	16,312			$	305
Impaired mortgage loans with valuation allowance recorded		24,337				801				36,178				1,180
Total		$	37,841			$	1,334			$	52,490			$	1,485

(1) Average recorded investment represents the average loan balances as of the beginning of period and all subsequent quarterly end of period balances

Schedule Of Other Invested Assets [Table Text Block]

Carrying values of these assets as of September 30, 2013 and December 31, 2012 are as follows (dollars in thousands):

		September 30, 2013				December 31, 2012
Equity securities		$	146,910			$	222,700
Limited partnerships and real estate joint ventures		417,761				356,419
Structured loans		245,404				306,497
Derivatives		87,421				168,208
Other		218,895				105,719
Total other invested assets		$	1,116,391			$	1,159,543

Investments Transferred [Table Text Block]

				Amortized Cost/ Recorded Investment				Estimated Fair Value
Fixed maturity securities - available for sale:
	Corporate securities			$	2,585,095			$	2,606,816
	Asset-backed securities			137,251				138,918
	Commercial mortgage-backed securities			703,313				704,065
	U.S. Government and agencies securities			240,952				256,168
	State and political subdivision securities			27,297				27,555
	Other foreign government, supranational, and
		foreign government-sponsored enterprises		56,776				55,437
			Total fixed maturity securities - available for sale	3,750,684				3,788,959
Mortgage loans on real estate				1,009,454				1,021,661
Short-term investments				101,428				101,338
Cash and cash equivalents				501,593				501,593
Accrued interest				43,739				43,739
			Total	$	5,406,898			$	5,457,290

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