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Investments (Tables)

3 Months Ended

Mar. 31, 2015

Investments [Abstract]

Available For Sale Securities

The following tables provide information relating to investments in fixed maturity and equity securities by sector as of March 31, 2015 and December 31, 2014 (dollars in thousands):

March 31, 2015:		Amortized				Unrealized				Unrealized				Estimated Fair				% of			Other-than- temporary impairments
		Cost				Gains				Losses				Value				Total			in AOCI
Available-for-sale:
Corporate securities		$	14,084,589			$	1,159,377			$	64,831			$	15,179,135			58.8	%		$	—
Canadian and Canadian provincial governments		2,477,703				1,416,036				—				3,893,739				15.1			—
Residential mortgage-backed securities		1,072,415				60,491				5,232				1,127,674				4.4			(300		)
Asset-backed securities		1,082,883				23,322				8,093				1,098,112				4.3			354
Commercial mortgage-backed securities		1,448,372				93,304				7,402				1,534,274				5.9			(1,609		)
U.S. government and agencies		444,529				28,879				—				473,408				1.8			—
State and political subdivisions		378,403				54,496				3,128				429,771				1.7			—
Other foreign government, supranational and foreign government-sponsored enterprises		1,944,822				129,615				9,327				2,065,110				8.0			—
Total fixed maturity securities		$	22,933,716			$	2,965,520			$	98,013			$	25,801,223			100.0	%		$	(1,555	)
Non-redeemable preferred stock		$	90,643			$	5,136			$	1,405			$	94,374			70.1	%
Other equity securities		39,395				894				44				40,245				29.9
Total equity securities		$	130,038			$	6,030			$	1,449			$	134,619			100.0	%

December 31, 2014:		Amortized				Unrealized				Unrealized				Estimated Fair				% of			Other-than- temporary impairments
		Cost				Gains				Losses				Value				Total			in AOCI
Available-for-sale:
Corporate securities		$	14,010,604			$	965,523			$	90,544			$	14,885,583			58.4	%		$	—
Canadian and Canadian provincial governments		2,668,852				1,196,420				7				3,865,265				15.2			—
Residential mortgage-backed securities		991,867				52,640				6,611				1,037,896				4.1			(300		)
Asset-backed securities		1,059,660				20,301				10,375				1,069,586				4.2			354
Commercial mortgage-backed securities		1,453,657				87,593				8,659				1,532,591				6.0			(1,609		)
U.S. government and agencies		501,352				25,014				515				525,851				2.0			—
State and political subdivisions		378,457				51,117				3,498				426,076				1.7			—
Other foreign government, supranational and foreign government-sponsored enterprises		2,041,148				110,065				13,089				2,138,124				8.4			—
Total fixed maturity securities		$	23,105,597			$	2,508,673			$	133,298			$	25,480,972			100.0	%		$	(1,555	)
Non-redeemable preferred stock		$	93,540			$	7,350			$	1,527			$	99,363			78.3	%
Other equity securities		26,994				597				94				27,497				21.7
Total equity securities		$	120,534			$	7,947			$	1,621			$	126,860			100.0	%

Schedule of Financial Instruments Owned and Pledged as Collateral [Table Text Block]

The following table includes fixed maturity securities pledged and received as collateral, and assets in trust held to satisfy collateral requirements under certain third-party reinsurance treaties as of March 31, 2015 and December 31, 2014 (dollars in thousands):

	March 31, 2015								December 31, 2014
	Amortized Cost				Estimated Fair Value				Amortized Cost				Estimated Fair Value
Fixed maturity securities pledged as collateral	$	148,411			$	160,448			$	127,229			$	134,863
Fixed maturity securities received as collateral	n/a				128,643				n/a				117,227
Securities held in trust	9,719,868				10,628,413				10,197,489				10,922,947

Concentration Risk Disclosure [Text Block]

The Company’s exposure to concentrations of credit risk of single issuers greater than 10% of the Company’s stockholders’ equity as of March 31, 2015 and December 31, 2014 is as follows (dollars in thousands).

	March 31, 2015								December 31, 2014
	Amortized Cost				Estimated Fair Value				Amortized Cost				Estimated Fair Value
Fixed maturity securities guaranteed or issued by:
Canadian province of Ontario	$	901,634			$	1,351,722			$	979,908			$	1,359,339
Canadian province of Quebec	934,860				1,628,425				1,006,315				1,599,673

Investments Classified By Contractual Maturity Date

The amortized cost and estimated fair value of fixed maturity securities available-for-sale at March 31, 2015 are shown by contractual maturity in the table below (dollars in thousands). Actual maturities can differ from contractual maturities because borrowers may have the right to call or prepay obligations with or without call or prepayment penalties. Asset and mortgage-backed securities are shown separately in the table below, as they are not due at a single maturity date.

		Amortized Cost				Estimated Fair Value
Available-for-sale:
Due in one year or less		$	594,886			$	600,953
Due after one year through five years		4,504,020				4,771,660
Due after five years through ten years		7,388,162				7,862,501
Due after ten years		6,842,978				8,806,049
Asset and mortgage-backed securities		3,603,670				3,760,060
Total		$	22,933,716			$	25,801,223

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 March 31, 2015 and December 31, 2014 (dollars in thousands):

March 31, 2015:						Estimated
		Amortized Cost				Fair Value				% of Total
Finance		$	4,842,257			$	5,186,461			34.2	%
Industrial		7,699,936				8,270,678				54.4
Utility		1,542,396				1,721,996				11.4
Total		$	14,084,589			$	15,179,135			100.0	%
December 31, 2014:						Estimated
		Amortized Cost				Fair Value				% of Total
Finance		$	4,789,568			$	5,066,408			34.0	%
Industrial		7,639,330				8,086,067				54.3
Utility		1,581,706				1,733,108				11.7
Total		$	14,010,604			$	14,885,583			100.0	%

Investments In Debt And Equity Securities Gross Unrealized Losses Disclosures

The following table presents the total gross unrealized losses for the 687 and 932 fixed maturity and equity securities as of March 31, 2015 and December 31, 2014, respectively, where the estimated fair value had declined and remained below amortized cost by the indicated amount (dollars in thousands):

		March 31, 2015							December 31, 2014
		Gross Unrealized Losses				% of Total			Gross Unrealized Losses				% of Total
Less than 20%		$	72,598			73.0	%		$	111,965			83.0	%
20% or more for less than six months		15,318				15.4			13,698				10.1
20% or more for six months or greater		11,546				11.6			9,256				6.9
Total		$	99,462			100.0	%		$	134,919			100.0	%

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

The following tables present the estimated fair values and gross unrealized losses, including other-than-temporary impairment losses reported in AOCI, for 687 and 932 fixed maturity and equity securities that have estimated fair values below amortized cost as of March 31, 2015 and December 31, 2014, respectively (dollars in thousands). These investments are presented by class and grade of security, as well as the length of time the related fair value has remained below amortized cost.

		Less than 12 months								12 months or greater								Total
						Gross								Gross								Gross
March 31, 2015:		Estimated				Unrealized				Estimated				Unrealized				Estimated				Unrealized
		Fair Value				Losses				Fair Value				Losses				Fair Value				Losses
Investment grade securities:
Corporate securities		$	805,091			$	18,419			$	227,150			$	15,576			$	1,032,241			$	33,995
Residential mortgage-backed securities		100,937				1,507				62,201				3,228				163,138				4,735
Asset-backed securities		285,839				2,774				99,896				3,381				385,735				6,155
Commercial mortgage-backed securities		49,304				162				20,733				1,590				70,037				1,752
State and political subdivisions		—				—				13,647				3,128				13,647				3,128
Other foreign government, supranational and foreign government-sponsored enterprises		109,347				5,560				36,737				1,494				146,084				7,054
Total investment grade securities		1,350,518				28,422				460,364				28,397				1,810,882				56,819
Below investment grade securities:
Corporate securities		357,118				28,279				25,560				2,557				382,678				30,836
Residential mortgage-backed securities		10,308				83				12,033				414				22,341				497
Asset-backed securities		14,478				231				6,715				1,707				21,193				1,938
Commercial mortgage-backed securities		6,739				240				5,522				5,410				12,261				5,650
Other foreign government, supranational and foreign government-sponsored enterprises		15,375				2,145				2,910				128				18,285				2,273
Total below investment grade securities		404,018				30,978				52,740				10,216				456,758				41,194
Total fixed maturity securities		$	1,754,536			$	59,400			$	513,104			$	38,613			$	2,267,640			$	98,013
Non-redeemable preferred stock		$	20,885			$	501			$	6,649			$	904			$	27,534			$	1,405
Other equity securities		8,597				44				—				—				8,597				44
Total equity securities		$	29,482			$	545			$	6,649			$	904			$	36,131			$	1,449

		Less than 12 months								12 months or greater								Total
						Gross								Gross								Gross
December 31, 2014:		Estimated				Unrealized				Estimated				Unrealized				Estimated				Unrealized
		Fair Value				Losses				Fair Value				Losses				Fair Value				Losses
Investment grade securities:
Corporate securities		$	1,225,767			$	27,784			$	614,294			$	30,040			$	1,840,061			$	57,824
Canadian and Canadian provincial governments		—				—				1,235				7				1,235				7
Residential mortgage-backed securities		78,864				846				135,414				5,247				214,278				6,093
Asset-backed securities		332,785				4,021				109,411				4,289				442,196				8,310
Commercial mortgage-backed securities		78,632				564				28,375				2,461				107,007				3,025
U.S. government and agencies		81,317				89				32,959				426				114,276				515
State and political subdivisions		13,780				17				18,998				3,438				32,778				3,455
Other foreign government, supranational and foreign government-sponsored enterprises		156,725				7,007				76,111				2,946				232,836				9,953
Total investment grade securities		1,967,870				40,328				1,016,797				48,854				2,984,667				89,182
Below investment grade securities:
Corporate securities		415,886				29,316				32,567				3,404				448,453				32,720
Residential mortgage-backed securities		22,836				293				6,284				225				29,120				518
Asset-backed securities		12,448				274				7,108				1,791				19,556				2,065
Commercial mortgage-backed securities		3,288				249				5,580				5,385				8,868				5,634
State and political subdivisions		964				43				—				—				964				43
Other foreign government, supranational and foreign government-sponsored enterprises		13,986				3,136				—				—				13,986				3,136
Total below investment grade securities		469,408				33,311				51,539				10,805				520,947				44,116
Total fixed maturity securities		$	2,437,278			$	73,639			$	1,068,336			$	59,659			$	3,505,614			$	133,298
Non-redeemable preferred stock		$	11,619			$	235			$	19,100			$	1,292			$	30,719			$	1,527
Other equity securities		—				—				3,545				94				3,545				94
Total equity securities		$	11,619			$	235			$	22,645			$	1,386			$	34,264			$	1,621

Investment Income

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

		Three months ended March 31,
		2015				2014
Fixed maturity securities available-for-sale		$	269,768			$	243,962
Mortgage loans on real estate		34,772				33,092
Policy loans		14,040				13,438
Funds withheld at interest		112,260				112,739
Short-term investments		695				965
Other invested assets		12,027				14,501
Investment income		443,562				418,697
Investment expense		(16,671		)		(14,322		)
Investment income, net of related expenses		$	426,891			$	404,375

Gain Loss On Investments

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

	Three months ended March 31,
	2015				2014
Fixed maturity and equity securities available for sale:
Other-than-temporary impairment losses on fixed maturity securities recognized in earnings	$	(2,527	)		$	(303	)
Gain on investment activity	19,201				8,067
Loss on investment activity	(13,596		)		(6,583		)
Other impairment losses and change in mortgage loan provision	(4,168		)		1,664
Derivatives and other, net	8,673				81,726
Total investment related gains (losses), net	$	7,583			$	84,571

Schedule of Repurchase Agreements [Table Text Block]

The following table includes the amount of borrowed securities, repurchased securities pledged and repurchased/reverse repurchased securities pledged and received as of March 31, 2015 and December 31, 2014 (dollars in thousands).

	March 31, 2015								December 31, 2014
	Amortized Cost				Estimated Fair Value				Amortized Cost				Estimated Fair Value
Borrowed securities	$	193,840			$	207,476			$	201,050			$	212,946
Repurchase program securities pledged	91,875				108,268				92,446				107,158
Repurchase program/reverse repurchase program:
Securities pledged	298,625				317,368				298,466				314,160
Securities received	n/a				346,560				n/a				338,929

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 March 31, 2015 and December 31, 2014 (dollars in thousands):

		March 31, 2015							December 31, 2014
Property type:		Recorded Investment				% of Total			Recorded Investment				% of Total
Office building		$	937,939			32.2	%		$	851,749			31.3	%
Retail		890,080				30.5			802,466				29.6
Industrial		474,310				16.2			466,583				17.2
Apartment		404,174				13.8			376,430				13.8
Other commercial		213,113				7.3			221,481				8.1
Total		$	2,919,616			100.0	%		$	2,718,709			100.0	%

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

The maturities of the mortgage loans, gross of valuation allowances, as of March 31, 2015 and December 31, 2014 are as follows (dollars in thousands):

		March 31, 2015							December 31, 2014
		Recorded Investment				% of Total			Recorded Investment				% of Total
Due within five years		$	923,234			31.6	%		$	860,362			31.6	%
Due after five years through ten years		1,263,984				43.3			1,165,530				42.9
Due after ten years		732,398				25.1			692,817				25.5
Total		$	2,919,616			100.0	%		$	2,718,709			100.0	%

Mortgage Loan Internal Credit Risk Grade [Table Text Block]

Information regarding the Company’s credit quality indicators, as determined by the Company's internal evaluation methodology for its recorded investment in mortgage loans, gross of valuation allowances, as of March 31, 2015 and December 31, 2014 is as follows (dollars in thousands):

		March 31, 2015							December 31, 2014
Internal credit quality grade:		Recorded Investment				% of Total			Recorded Investment				% of Total
High investment grade		$	1,404,166			48.0	%		$	1,326,199			48.8	%
Investment grade		1,377,802				47.2			1,235,046				45.4
Average		98,531				3.4			118,152				4.4
Watch list		22,161				0.8			22,285				0.8
In or near default		16,956				0.6			17,027				0.6
Total		$	2,919,616			100.0	%		$	2,718,709			100.0	%

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 March 31, 2015 and December 31, 2014 (dollars in thousands):

		March 31, 2015				December 31, 2014
Mortgage loans:
Individually measured for impairment		$	16,956			$	17,027
Collectively measured for impairment		2,902,660				2,701,682
Mortgage loans, gross of valuation allowances		2,919,616				2,718,709
Valuation allowances:
Individually measured for impairment		713				816
Collectively measured for impairment		5,417				5,655
Total valuation allowances		6,130				6,471
Mortgage loans, net of valuation allowances		$	2,913,486			$	2,712,238

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 months ended March 31, 2015 and 2014 is as follows (dollars in thousands):

		Three months ended March 31,
		2015				2014
Balance, beginning of period		$	6,471			$	10,106
Charge-offs, net of recoveries		—				24
Provision (release)		(341		)		(1,664		)
Balance, end of period		$	6,130			$	8,466

Impaired Financing Receivables Table

Information regarding the portion of the Company’s mortgage loans that were impaired as of March 31, 2015 and December 31, 2014 is as follows (dollars in thousands):

		Unpaid Principal Balance				Recorded Investment				Related Allowance				Carrying Value
March 31, 2015:
Impaired mortgage loans with no valuation allowance recorded		$	7,296			$	6,693			$	—			$	6,693
Impaired mortgage loans with valuation allowance recorded		10,227				10,263				713				9,550
Total impaired mortgage loans		$	17,523			$	16,956			$	713			$	16,243
December 31, 2014:
Impaired mortgage loans with no valuation allowance recorded		$	7,314			$	6,711			$	—			$	6,711
Impaired mortgage loans with valuation allowance recorded		10,279				10,316				816				9,500
Total impaired mortgage loans		$	17,593			$	17,027			$	816			$	16,211
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 March 31,
		2015								2014
		Average Recorded Investment(1)				Interest Income				Average Recorded   Investment(1)				Interest Income
Impaired mortgage loans with no valuation allowance recorded		$	10,290			$	106			$	14,539			$	318
Impaired mortgage loans with valuation allowance recorded		6,702				155				20,554				193
Total impaired mortgage loans		$	16,992			$	261			$	35,093			$	511

(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 March 31, 2015 and December 31, 2014 are as follows (dollars in thousands):

		March 31, 2015				December 31, 2014
Equity securities		$	134,619			$	126,860
Limited partnerships and real estate joint ventures		450,842				446,604
Structured loans		148,377				164,309
Derivatives		265,020				216,966
FVO contractholder-directed unit-linked investments		136,597				140,344
Other		107,578				103,236
Total other invested assets		$	1,243,033			$	1,198,319

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The table presents the rollforward of valuation allowance for mortgage loans held-for-investment, by portfolio segment.

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

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Investments classified by contractual maturity date.

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Mortgage loans classified by contractual maturity date.

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Tabular disclosure of available-for-sale securities which includes, but is not limited to, changes in the cost basis and fair value, fair value and gross unrealized gain (loss), fair values by type of security, contractual maturity and classification, amortized cost basis, contracts to acquire securities to be accounted for as available-for-sale, debt maturities, transfers to trading, change in net unrealized holding gain (loss) net of tax, continuous unrealized loss position fair value, aggregate losses qualitative disclosures, other than temporary impairment (OTTI) losses or other disclosures related to available for sale securities.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 320

-SubTopic 10

-Section 50

-Paragraph 6

-URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27290-111563



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 320

-SubTopic 10

-Section 50

-Paragraph 9

-URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27357-111563



Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 320

-SubTopic 10

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