Globe Life (GL) 10-Q 7 Aug 15 2015 Q2 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	6 Months Ended
	Jun. 30, 2015	Jul. 29, 2015
Document And Entity Information [Abstract]
Entity Registrant Name	TORCHMARK CORP
Entity Central Index Key	320,335
Trading Symbol	TMK
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Document Type	10-Q
Document Period End Date	Jun. 30, 2015
Document Fiscal Year Focus	2,015
Document Fiscal Period Focus	Q2
Amendment Flag	false
Entity Common Stock, Shares Outstanding		125,115,360

Condensed Consolidated Balance

Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Assets
Fixed maturities, available for sale, at fair value (amortized cost: 2015–$13,126,918; 2014–$12,823,612)	$ 14,121,462	$ 14,493,060
Equity securities, at fair value (cost: 2015–$776; 2014–$776)	1,545	1,477
Policy loans	479,953	472,109
Other long-term investments	11,039	10,449
Short-term investments	28,695	15,882
Total investments	14,642,694	14,992,977
Cash	62,849	66,019
Accrued investment income	206,653	204,879
Other receivables	627,660	543,988
Deferred acquisition costs	3,550,836	3,471,781
Goodwill	441,591	441,591
Other assets	488,627	493,495
Total assets	20,020,910	20,214,730
Liabilities:
Future policy benefits	12,004,366	11,750,495
Unearned and advance premiums	76,978	72,275
Policy claims and other benefits payable	232,352	212,137
Other policyholders’ funds	95,468	95,446
Total policy liabilities	12,409,164	12,130,353
Current and deferred income taxes payable	1,564,951	1,797,265
Other liabilities	360,571	359,118
Short-term debt	636,862	238,398
Long-term debt (fair value: 2015–$868,801; 2014–$1,148,749)	743,306	992,130
Total liabilities	15,714,854	15,517,264
Shareholders’ equity:
Preferred stock, par value $1 per share–Authorized 5,000,000 shares; outstanding: -0- in 2015 and in 2014	0	0
Common stock, par value $1 per share–Authorized 320,000,000 shares; outstanding: (2015–134,218,183 issued, less 8,976,671 held in treasury and 2014–134,218,183 issued, less 6,287,907 held in treasury)	134,218	134,218
Additional paid-in capital	476,791	457,613
Accumulated other comprehensive income	555,319	997,452
Retained earnings	3,568,715	3,376,846
Treasury stock, at cost	(428,987)	(268,663)
Total shareholders’ equity	4,306,056	4,697,466
Total liabilities and shareholders’ equity	$ 20,020,910	$ 20,214,730

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Statement of Financial Position [Abstract]
Fixed maturities, available for sale, amortized cost	$ 13,126,918	$ 12,823,612
Equity securities, cost	776	776
Long-term debt, fair value	$ 868,801	$ 1,148,749
Preferred stock, par value (in dollars per share)	$ 1	$ 1
Preferred stock, shares authorized	5,000,000	5,000,000
Preferred stock, shares outstanding	0	0
Common stock, par value	$ 1	$ 1
Common stock, shares authorized	320,000,000	320,000,000
Common stock, shares issued	134,218,183	134,218,183
Common stock, shares held in treasury	8,976,671	6,287,907

Condensed Consolidated Statemen

Condensed Consolidated Statements of Operations - USD ($) $ in Thousands	3 Months Ended			6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014		Jun. 30, 2015	Jun. 30, 2014	[1]
Revenue:
Life premium	$ 520,038	$ 491,952	[1]	$ 1,033,380	$ 981,010
Health premium	315,492	307,791	[1]	632,257	637,654
Other premium	37	123	[1]	78	222
Total premium	835,567	799,866	[1]	1,665,715	1,618,886
Net investment income	194,823	189,930	[1]	386,419	377,981
Realized investment gains	2,613	577	[1]	2,732	17,196
Other income	691	663	[1]	1,360	1,144
Total revenue	1,033,694	991,036	[1]	2,056,226	2,015,207
Benefits and expenses:
Life policyholder benefits	347,364	324,192	[1]	687,065	644,368
Health policyholder benefits	235,175	220,554	[1]	477,326	476,272
Other policyholder benefits	9,754	10,461	[1]	19,799	21,084
Total policyholder benefits	592,293	555,207	[1]	1,184,190	1,141,724
Amortization of deferred acquisition costs	112,904	104,561	[1]	224,167	209,294
Commissions, premium taxes, and non-deferred acquisition costs	64,018	62,020	[1]	127,286	121,398
Other operating expense	56,977	56,400	[1]	113,589	113,356
Interest expense	19,114	19,037	[1]	38,174	38,086
Total benefits and expenses	845,306	797,225	[1]	1,687,406	1,623,858
Income before income taxes	188,388	193,811	[1]	368,820	391,349
Income taxes	(61,278)	(62,888)	[1]	(120,062)	(127,570)
Net income	$ 127,110	$ 130,923		$ 248,758	$ 263,779
Basic net income per share	$ 1.01	$ 1	[1]	$ 1.97	$ 1.99
Diluted net income per share	1	0.98	[1]	1.94	1.97
Dividends declared per common share	$ 0.14	$ 0.13	[1]	$ 0.27	$ 0.25
[1]	Certain balances were retrospectively adjusted to give effect to the adoption of new accounting guidance as described in Note G- Adoption of New Accounting Standards

Condensed Consolidated Stateme5

Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Net income	$ 127,110	$ 130,923	$ 248,758	$ 263,779	[1]
Unrealized gains (losses) on securities:
Less applicable taxes	328,996	(150,683)	236,865	(364,350)
Unrealized investment gains (losses), net of tax	(611,545)	279,929	(440,300)	676,819
Unrealized gains (losses) attributable to deferred acquisition costs	2,953	(3,045)	3,605	(7,273)
Less applicable taxes	(1,034)	1,066	(1,262)	2,546
Unrealized gains (losses) attributable to deferred acquisition costs, net of tax	1,919	(1,979)	2,343	(4,727)
Foreign exchange translation adjustments, other than securities	(4,845)	3,185	(13,536)	2,008
Less applicable taxes	1,774	(1,189)	4,503	(750)
Foreign exchange translation adjustments, other than securities, net of tax	(3,071)	1,996	(9,033)	1,258
Pension adjustments	3,653	3,031	7,472	5,605
Less applicable taxes	(1,278)	(1,061)	(2,615)	(1,962)
Pension adjustments, net of tax	2,375	1,970	4,857	3,643
Other comprehensive income (loss)	(610,322)	281,916	(442,133)	676,993
Comprehensive income (loss)	(483,212)	412,839	(193,375)	940,772
Securities [Member]
Unrealized gains (losses) on securities:
Unrealized holding gains (losses) arising during period	(935,288)	431,271	(668,706)	1,060,337
Reclassification adjustment for (gains) losses on securities included in net income	(1,479)	(577)	(1,598)	(17,196)
Reclassification adjustment for amortization of (discount) and premium	(1,599)	(2,317)	(3,271)	(4,544)
Foreign exchange adjustment on securities recorded at fair value	1,295	740	(1,263)	(131)
Unrealized gains (losses) on securities	(937,071)	429,117	(674,838)	1,038,466
Other Investments [Member]
Unrealized gains (losses) on securities:
Unrealized gains (losses) on other investments	(3,470)	1,495	(2,327)	2,703
Total unrealized investment gains (losses)	$ (940,541)	$ 430,612	$ (677,165)	$ 1,041,169
[1]	Certain balances were retrospectively adjusted to give effect to the adoption of new accounting guidance as described in Note G- Adoption of New Accounting Standards

Condensed Consolidated Stateme6

Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Statement of Cash Flows [Abstract]
Cash provided from operations	$ 454,121	$ 419,383
Long-term investments sold or matured:
Fixed maturities available for sale—sold	14,287	28,194
Fixed maturities available for sale—matured, called, and repaid	213,989	107,394
Equity securities	0	700
Other long-term investments	431	23
Total long-term investments sold or matured	228,707	136,311
Long-term investments acquired:
Fixed maturities	(541,875)	(325,574)
Other long-term investments	(1,886)	0
Total long-term investments acquired	(543,761)	(325,574)
Net increase in policy loans	(7,844)	(8,937)
Net (increase) decrease in short-term investments	(12,813)	28,329
Net change in payable or receivable for securities	4,980	0
Disposition of properties	0	19
Additions to properties	(13,949)	(10,006)
Investment in low-income housing interests	(11,954)	(22,030)
Cash used for investment activities	(356,634)	(201,888)
Cash provided from (used for) financing activities:
Proceeds from exercise of stock options	21,507	35,015
Net borrowings (repayments) of commercial paper	148,970	45,874
Excess tax benefit from stock option exercises	10,989	11,098
Acquisition of treasury stock	(211,567)	(238,313)
Cash dividends paid to shareholders	(33,306)	(31,980)
Net receipts (withdrawals) from deposit-type products	(42,815)	(33,104)
Cash provided by (used for) financing activities	(106,222)	(211,410)
Effect of foreign exchange rate changes on cash	5,565	2,775
Net (decrease) increase in cash	(3,170)	8,860
Cash at beginning of year	66,019	36,943
Cash at end of period	$ 62,849	$ 45,803

Accounting Policies

Accounting Policies	6 Months Ended
	Jun. 30, 2015
Accounting Policies [Abstract]
Accounting Policies	Accounting Policies The accompanying condensed consolidated financial statements have been prepared in accordance with the instructions to Form 10-Q. Therefore, they do not include all of the annual disclosures required by accounting principles generally accepted in the United States of America (GAAP). However, in the opinion of management, these statements include all adjustments, consisting of normal recurring adjustments, which are necessary for a fair presentation of the condensed consolidated financial position at June 30, 2015 , and the condensed consolidated results of operations, comprehensive income, and cash flows for the periods ended June 30, 2015 and 2014 . The interim period condensed consolidated financial statements should be read in conjunction with the Condensed Consolidated Financial Statements that are included in the Form 10-K filed on February 27, 2015. Effective January 1, 2015, Torchmark adopted Financial Accounting Standards Board (FASB) Accounting Standards Update No. 2014-01 Investments-Equity Method and Joint Ventures: Accounting for Investments in Qualified Affordable Housing Projects (ASU 2014-01 ). As a result of the adoption, the Company retrospectively adjusted prior periods. See Note G - Adoption of New Accounting Standards for further detail.

Earnings Per Share

Earnings Per Share	6 Months Ended
	Jun. 30, 2015
Earnings Per Share [Abstract]
Earnings Per Share	Earnings Per Share A reconciliation of basic and diluted weighted-average shares outstanding is as follows: For the Three Months Ended For the Six Months Ended 2015 2014 2015 2014 Basic weighted average shares outstanding 125,816,943 131,491,182 126,465,420 132,322,704 Weighted average dilutive options outstanding 1,622,698 1,823,640 1,553,309 1,856,496 Diluted weighted average shares outstanding 127,439,641 133,314,822 128,018,729 134,179,200 Antidilutive shares — — — —

Postretirement Benefit Plans

Postretirement Benefit Plans	6 Months Ended
	Jun. 30, 2015
Compensation and Retirement Disclosure [Abstract]
Postretirement Benefit Plans	Postretirement Benefit Plans The following tables present a summary of post-retirement benefit costs by component. Components of Post-Retirement Benefit Costs Three Months Ended June 30, Pension Benefits Other Benefits 2015 2014 2015 2014 Service cost $ 3,991 $ 3,231 $ — $ (7 ) Interest cost 5,004 4,819 204 150 Expected return on assets (5,323 ) (4,752 ) — — Amortization: Prior service cost 82 529 — — Actuarial (gain) loss 3,534 2,047 37 — Direct recognition of expense — — 151 (42 ) Net periodic benefit cost $ 7,288 $ 5,874 $ 392 $ 101 Six Months Ended June 30, Pension Benefits Other Benefits 2015 2014 2015 2014 Service cost $ 7,981 $ 6,463 $ — $ 49 Interest cost 10,006 9,638 407 297 Expected return on assets (10,646 ) (9,505 ) — — Amortization: Prior service cost 163 1,057 — — Actuarial (gain)/loss 7,068 4,092 60 — Direct recognition of expense — — 327 (104 ) Net periodic benefit cost $ 14,572 $ 11,745 $ 794 $ 242 The following chart presents assets at fair value for the defined-benefit pension plans at June 30, 2015 and the prior-year end. Pension Assets by Component June 30, 2015 December 31, 2014 Amount % Amount % Corporate debt $ 155,642 48 $ 166,825 52 Other fixed maturities 277 — 284 — Equity securities 127,530 40 127,568 39 Short-term investments 19,047 6 9,038 3 Guaranteed annuity contract 15,259 5 15,027 5 Other 3,063 1 4,156 1 Total $ 320,818 100 $ 322,898 100 The liability for the funded defined-benefit pension plans was $394 million at June 30, 2015 and $403 million at December 31, 2014 . Cash contributions of $12 million were made to the qualified pension plans during the six months ended June 30, 2015 . Torchmark expects to make cash contributions to these plans during 2015 in an amount not to exceed $20 million . With respect to the Company’s non-qualified supplemental retirement plan, life insurance policies on the lives of plan participants have been established with an unaffiliated carrier to fund a portion of the Company’s obligations under the plan. These policies, as well as investments deposited with an unaffiliated trustee, were previously placed in a Rabbi Trust to provide for payment of the plan obligations. At June 30, 2015 , the combined value of the insurance policies and investments in the Rabbi Trust to support plan liabilities were $78 million , compared with $74 million at year-end 2014 . Since this plan is non-qualified, the values of the insurance policies and investments are recorded as other assets in the Condensed Consolidated Balance Sheets and are not included in the chart of plan assets above. The liability for the non-qualified pension plan was $73 million at June 30, 2015 and $71 million at December 31, 2014 .

Investments

Investments	6 Months Ended
	Jun. 30, 2015
Investments, Debt and Equity Securities [Abstract]
Investments	Investments Portfolio Composition: A summary of fixed maturities and equity securities available for sale by cost or amortized cost and estimated fair value at June 30, 2015 is as follows: Portfolio Composition as of June 30, 2015 Cost or Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value % of Total Fixed Maturities* Fixed maturities available for sale: Bonds: U.S. Government direct, guaranteed, and government-sponsored enterprises $ 371,529 $ 449 $ (17,422 ) $ 354,556 3 States, municipalities, and political subdivisions 1,298,664 132,850 (2,151 ) 1,429,363 10 Foreign governments 23,037 1,425 (379 ) 24,083 — Corporates, by sector: Financial 2,675,863 314,572 (38,366 ) 2,952,069 21 Utilities 2,138,355 258,616 (27,006 ) 2,369,965 17 Energy 1,541,450 115,442 (46,261 ) 1,610,631 11 Other corporate sectors 4,514,626 360,704 (110,304 ) 4,765,026 34 Total corporates 10,870,294 1,049,334 (221,937 ) 11,697,691 83 Collateralized debt obligations 64,782 16,525 (7,639 ) 73,668 — Other asset-backed securities 19,450 1,182 — 20,632 — Redeemable preferred stocks, by sector: Financial 450,496 48,332 (6,754 ) 492,074 4 Utilities 28,666 751 (22 ) 29,395 — Total redeemable preferred stocks 479,162 49,083 (6,776 ) 521,469 4 Total fixed maturities 13,126,918 1,250,848 (256,304 ) 14,121,462 100 Equity securities 776 769 — 1,545 Total fixed maturities and equity securities $ 13,127,694 $ 1,251,617 $ (256,304 ) $ 14,123,007 * At fair value A schedule of fixed maturities by contractual maturity date at June 30, 2015 is shown below on an amortized cost basis and on a fair value basis. Actual maturity dates could differ from contractual maturities due to call or prepayment provisions. Amortized Cost Fair Value Fixed maturities available for sale: Due in one year or less $ 72,803 $ 73,790 Due from one to five years 533,791 592,958 Due from five to ten years 972,641 1,063,069 Due from ten to twenty years 3,827,375 4,267,617 Due after twenty years 7,633,945 8,027,399 Mortgage-backed and asset-backed securities 86,363 96,629 $ 13,126,918 $ 14,121,462 Selected information about sales of fixed maturities is as follows. For the Six Months Ended June 30, 2015 2014 Proceeds from sales $ 14,287 $ 28,194 Gross realized gains 82 16,286 Gross realized losses (104 ) (3 ) Fair Value Measurements : The following table represents assets measured at fair value on a recurring basis. Fair Value Measurements at June 30, 2015 Using: Description Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Total Fair Value Fixed maturities available for sale: Bonds: U.S. Government direct, guaranteed, and government-sponsored enterprises $ — $ 354,556 $ — $ 354,556 States, municipalities, and political subdivisions — 1,429,363 — 1,429,363 Foreign governments — 24,083 — 24,083 Corporates, by sector: Financial — 2,883,531 68,538 2,952,069 Utilities 25,174 2,209,586 135,205 2,369,965 Energy — 1,583,301 27,330 1,610,631 Other corporate sectors — 4,474,070 290,956 4,765,026 Total corporates 25,174 11,150,488 522,029 11,697,691 Collateralized debt obligations — — 73,668 73,668 Other asset-backed securities — 20,632 — 20,632 Redeemable preferred stocks, by sector: Financial 15,226 476,848 — 492,074 Utilities — 29,395 — 29,395 Total redeemable preferred stocks 15,226 506,243 — 521,469 Total fixed maturities 40,400 13,485,365 595,697 14,121,462 Equity securities 712 — 833 1,545 Total fixed maturities and equity securities $ 41,112 $ 13,485,365 $ 596,530 $ 14,123,007 Percent of total 0.3 % 95.5 % 4.2 % 100.0 % The following table represents an analysis of changes in fair value measurements using significant unobservable inputs (Level 3). Analysis of Changes in Fair Value Measurements Using Significant Unobservable Inputs (Level 3) For the Six Months Ended June 30, 2015 Collateralized debt obligations Corporates (1) Equities Total Balance at January 1, 2015 $ 63,232 $ 512,714 $ 833 $ 576,779 Total gains or losses: Included in realized gains/losses — — — — Included in other comprehensive income 13,531 (8,426 ) — 5,105 Acquisitions — 19,400 — 19,400 Amortization 2,810 7 — 2,817 Other (2) (5,905 ) (1,666 ) — (7,571 ) Transfers in and/or out of Level 3 (3) — — — — Balance at June 30, 2015 $ 73,668 $ 522,029 $ 833 $ 596,530 Percent of total fixed maturity and equity securities 0.5 % 3.7 % — % 4.2 % For the Six Months Ended June 30, 2014 Collateralized debt obligations Corporates (1) Equities Total Balance at January 1, 2014 $ 58,205 $ 300,300 $ 776 $ 359,281 Total gains or losses: Included in realized gains/losses 15,924 1 — 15,925 Included in other comprehensive income 8,702 19,513 57 28,272 Acquisitions — 90,680 — 90,680 Sales (16,049 ) (1 ) — (16,050 ) Amortization 2,668 5 — 2,673 Other (2) (3,231 ) (1,165 ) — (4,396 ) Transfers in and/or out of Level 3 (3) — — — — Balance at June 30, 2014 $ 66,219 $ 409,333 $ 833 $ 476,385 Percent of total fixed maturity and equity securities 0.5 % 2.9 % — % 3.4 % (1) Includes redeemable preferred stocks. (2) Includes capitalized interest, foreign exchange adjustments, and principal repayments. (3) Considered to be transferred at the end of the period. Transfers into Level 3 occur when observable inputs are no longer available. Transfers out of Level 3 occur when observable inputs become available. Other-Than-Temporary Impairments: There were no other-than-temporary impairments during the six -month periods ended June 30, 2015 or 2014 . Unrealized Loss Analysis: The following table discloses information about investments in an unrealized loss position. Less than Twelve Months Twelve Months or Longer Total Number of issues (Cusip numbers) held: As of June 30, 2015 407 61 468 As of December 31, 2014 80 173 253 Torchmark’s entire fixed-maturity and equity portfolio consisted of 1,580 issues at June 30, 2015 and 1,604 issues at December 31, 2014 . The weighted average quality rating of all unrealized loss positions as of June 30, 2015 was BBB+ . Although Torchmark’s fixed-maturity investments are available for sale, Torchmark’s management generally does not intend to sell and does not believe it will be required to sell any securities which are temporarily impaired before they recover due to the strong and stable cash flows generated by its insurance products. The following table discloses unrealized investment losses by class of investment at June 30, 2015 for the period of time in a loss position. Torchmark does not view these investments as other-than-temporarily impaired. Analysis of Gross Unrealized Investment Losses At June 30, 2015 Less than Twelve Months Twelve Months or Longer Total Description of Securities Fair Value Unrealized Loss Fair Value Unrealized Loss Fair Value Unrealized Loss Fixed maturities available for sale: Investment grade: Bonds: U.S. Government direct, guaranteed, and government-sponsored enterprises $ 305,538 $ (16,522 ) $ 14,642 $ (900 ) $ 320,180 $ (17,422 ) States, municipalities and political subdivisions 79,844 (1,803 ) 1,687 (112 ) 81,531 (1,915 ) Foreign governments 4,134 (379 ) — — 4,134 (379 ) Corporates, by sector: Financial 334,577 (17,515 ) — — 334,577 (17,515 ) Utilities 498,821 (27,006 ) — — 498,821 (27,006 ) Energy 372,105 (30,440 ) 59,712 (9,727 ) 431,817 (40,167 ) Other corporate sectors 1,530,184 (96,962 ) 45,852 (7,340 ) 1,576,036 (104,302 ) Total corporates 2,735,687 (171,923 ) 105,564 (17,067 ) 2,841,251 (188,990 ) Redeemable preferred stocks, by sector: Utilities — — 1,645 (22 ) 1,645 (22 ) Total redeemable preferred stocks — — 1,645 (22 ) 1,645 (22 ) Total investment grade 3,125,203 (190,627 ) 123,538 (18,101 ) 3,248,741 (208,728 ) Below investment grade: Bonds: States, municipalities and political subdivisions — — 319 (236 ) 319 (236 ) Corporates, by sector: Financial — — 84,947 (20,851 ) 84,947 (20,851 ) Energy 55,653 (6,094 ) — — 55,653 (6,094 ) Other corporate sectors 15,889 (823 ) 57,213 (5,179 ) 73,102 (6,002 ) Total corporates 71,542 (6,917 ) 142,160 (26,030 ) 213,702 (32,947 ) Collateralized debt obligations — — 12,361 (7,639 ) 12,361 (7,639 ) Redeemable preferred stocks, by sector: Financial — — 55,582 (6,754 ) 55,582 (6,754 ) Total redeemable preferred stocks — — 55,582 (6,754 ) 55,582 (6,754 ) Total below investment grade 71,542 (6,917 ) 210,422 (40,659 ) 281,964 (47,576 ) Total fixed maturities 3,196,745 (197,544 ) 333,960 (58,760 ) 3,530,705 (256,304 ) Equity securities — — — — — — Total fixed maturities and equity securities $ 3,196,745 $ (197,544 ) $ 333,960 $ (58,760 ) $ 3,530,705 $ (256,304 )

Supplemental Information about

Supplemental Information about Changes to Accumulated Other Comprehensive Income	6 Months Ended
	Jun. 30, 2015
Equity [Abstract]
Supplemental Information about Changes to Accumulated Other Comprehensive Income	Supplemental Information about Changes to Accumulated Other Comprehensive Income An analysis of the change in balance by component of Accumulated Other Comprehensive Income is as follows for the three and six month periods ended June 30, 2015 and 2014 . Components of Accumulated Other Comprehensive Income For the Three Months Ended June 30, 2015 Available for Deferred Foreign Pension Total Balance at April 1, 2015 $ 1,261,518 $ (10,334 ) $ 11,424 $ (96,967 ) $ 1,165,641 Other comprehensive income (loss) before reclassifications, net of tax (609,544 ) 1,919 (3,071 ) — (610,696 ) Reclassifications, net of tax (2,001 ) — — 2,375 374 Other comprehensive income (loss) (611,545 ) 1,919 (3,071 ) 2,375 (610,322 ) Balance at June 30, 2015 $ 649,973 $ (8,415 ) $ 8,353 $ (94,592 ) $ 555,319 For the Three Months Ended June 30, 2014 Available Deferred Foreign Pension Total Balance at April 1, 2014 $ 653,086 $ (9,476 ) $ 24,128 $ (61,680 ) $ 606,058 Other comprehensive income (loss) before reclassifications, net of tax 281,810 (1,979 ) 1,996 297 282,124 Reclassifications, net of tax (1,881 ) — — 1,673 (208 ) Other comprehensive income (loss) 279,929 (1,979 ) 1,996 1,970 281,916 Balance at June 30, 2014 $ 933,015 $ (11,455 ) $ 26,124 $ (59,710 ) $ 887,974 Note E—Supplemental Information about Changes to Accumulated Other Comprehensive Income (continued) Components of Accumulated Other Comprehensive Income For the Six Months Ended June 30, 2015 Available for Sale Assets Deferred Acquisition Costs Foreign Exchange Pension Adjustments Total Balance at January 1, 2015 $ 1,090,273 $ (10,758 ) $ 17,386 $ (99,449 ) $ 997,452 Other comprehensive income (loss) before reclassifications, net of tax (437,135 ) 2,343 (9,033 ) 117 (443,708 ) Reclassifications, net of tax (3,165 ) — — 4,740 1,575 Other comprehensive income (loss) (440,300 ) 2,343 (9,033 ) 4,857 (442,133 ) Balance at June 30, 2015 $ 649,973 $ (8,415 ) $ 8,353 $ (94,592 ) $ 555,319 For the Six Months Ended June 30, 2014 Available for Sale Assets Deferred Acquisition Costs Foreign Exchange Pension Adjustments Total Balance at January 1, 2014 $ 256,196 $ (6,728 ) $ 24,866 $ (63,353 ) $ 210,981 Other comprehensive income (loss) before reclassifications, net of tax 690,949 (4,727 ) 1,258 297 687,777 Reclassifications, net of tax (14,130 ) — — 3,346 (10,784 ) Other comprehensive income (loss) 676,819 (4,727 ) 1,258 3,643 676,993 Balance at June 30, 2014 $ 933,015 $ (11,455 ) $ 26,124 $ (59,710 ) $ 887,974 Reclassifications out of Accumulated Other Comprehensive Income are presented below for the three and six month periods ended June 30, 2015 and 2014 . Reclassification Adjustments Three Months Ended Six Months Ended Affected line items in the Statement of Operations 2015 2014 2015 2014 Unrealized investment gains (losses) on available for sale assets: Realized (gains) losses $ (1,479 ) $ (577 ) $ (1,598 ) $ (17,196 ) Realized investment gains (losses) Amortization of (discount) premium (1,599 ) (2,317 ) (3,271 ) (4,544 ) Net investment income Total before tax (3,078 ) (2,894 ) (4,869 ) (21,740 ) Tax 1,077 1,013 1,704 7,610 Income Taxes Total after tax (2,001 ) (1,881 ) (3,165 ) (14,130 ) Pension adjustments: Amortization of prior service cost 82 528 163 1,056 Other operating expenses Amortization of actuarial gain (loss) 3,571 2,046 7,128 4,092 Other operating expenses Total before tax 3,653 2,574 7,291 5,148 Tax (1,278 ) (901 ) (2,551 ) (1,802 ) Income Taxes Total after tax 2,375 1,673 4,740 3,346 Total reclassifications (after tax) $ 374 $ (208 ) $ 1,575 $ (10,784 )

Business Segments

Business Segments	6 Months Ended
	Jun. 30, 2015
Segment Reporting [Abstract]
Business Segments	Business Segments Torchmark is comprised of life insurance companies which primarily market individual life and supplemental health insurance products through niche distribution channels to middle income Americans. Torchmark’s core operations are insurance marketing and underwriting, and management of its investments. The insurance marketing and underwriting operation is segmented by the types of insurance products offered: life, health, Medicare Part D, and annuity. Premium income for Medicare Part D health insurance is included with the premium for other health products in the Condensed Consolidated Statements of Operations. Annuity revenue is classified as “Other premium.” Management’s measure of profitability for each insurance segment is insurance underwriting margin, which is underwriting income before other income and insurance administrative expenses. It represents the profit margin on insurance products before administrative expenses, and is calculated by deducting net policy obligations (claims incurred and change in reserves), commissions and other acquisition expenses from premium revenue. Torchmark further views the profitability of each insurance product segment by the marketing groups that distribute the products of that segment: direct response, independent agencies, or captive agencies. Torchmark’s management prefers to evaluate the performance of its underwriting and investment activities separately, rather than allocating investment income to the underwriting results. As such, the investment function is presented as a stand-alone segment. The investment segment includes the management of the investment portfolio, debt, and cash flow. Management’s measure of profitability for this segment is excess investment income, which is the income earned on the investment portfolio less the required interest on net policy liabilities and financing costs. Financing costs include the interest on Torchmark’s debt. Other income and insurance administrative expense are classified in a separate “Other” segment. The majority of the Company’s required interest on net policy liabilities (benefit reserves less the deferred acquisition cost asset) is not credited to policyholder accounts. Instead, it is an actuarial assumption for discounting cash flows in the computation of benefit reserves and the amortization of the deferred acquisition cost asset. Investment income required to fund the required interest on net policy liabilities is removed from the investment segment and applied to the insurance segments to eliminate the effect of the required interest from the insurance segments. As a result, the investment segment measures net investment income against the required interest on net policy liabilities and financing costs, while the insurance segments simply measure premiums against benefits and expenses. We believe this presentation facilitates a more meaningful analysis of the Company’s underwriting and investment performance as the underwriting results are based on premiums, claims, and expenses and are not affected by unanticipated fluctuations in investment yields. As noted, Torchmark’s “core operations” are insurance and investment management. The insurance segments issue policies for which premiums are collected for the eventual payment of policy benefits. In addition to policy benefits, operating expenses are incurred including acquisition costs, administrative expenses, and taxes. Because life and health contracts can be long term, premium receipts in excess of current expenses are invested. Investment activities, conducted by the investment segment, focus on seeking quality investments with a yield and term appropriate to support the insurance product obligations. These investments generally consist of fixed maturities, and, over the long term, the expected yields are taken into account when setting insurance premium rates and product profitability expectations. As a result, fixed maturities are generally held for long periods to support the liabilities, and Torchmark generally expects to hold investments until maturity. Dispositions of investments occur from time to time, generally as a result of credit concerns, calls by issuers, or other factors usually beyond the control of management. Dispositions are sometimes required in order to maintain the Company’s investment policies and objectives. Investments are also occasionally written down as a result of other-than-temporary impairment. Torchmark does not actively trade investments. As a result, realized gains and losses from the disposition and write down of investments are generally incidental to operations and are not considered a material factor in insurance pricing or product profitability. While from time to time these realized gains and losses could be significant to net income in the period in which they occur, they generally have a limited effect on the yield of the total investment portfolio. Further, because the proceeds of the disposals are reinvested in the portfolio, the disposals have little effect on the size of the portfolio and the income from the reinvestments is included in net investment income. Therefore, management removes realized investment gains and losses from results of core operations when evaluating the performance of the Company. For this reason, these gains and losses are excluded from Torchmark’s operating segments. Torchmark accounts for its stock options and restricted stock under current accounting guidance requiring stock options and stock grants to be expensed based on fair value at the time of grant. Management considers stock compensation expense to be an expense of the Parent Company. Therefore, stock compensation expense is treated as a corporate expense in Torchmark’s segment analysis. Torchmark provides coverage under the Medicare Part D prescription drug plan for Medicare beneficiaries. In accordance with GAAP, Part D premiums are recognized evenly throughout the year when they become due but benefit costs are recognized when the costs are incurred. Due to the design of the Part D product, premiums are evenly distributed throughout the year, but benefit costs are higher earlier in the year. As a result, under GAAP, benefit costs can exceed premiums in the first part of the year, but be less than premiums during the remainder of the year. In order to more closely match the benefit cost with the associated revenue for interim periods, Torchmark defers these excess benefits for segment reporting purposes. In addition, GAAP recognizes in each quarter a government risk-sharing premium adjustment consistent with the contract as if the quarter represented an entire contract period. These quarterly risk-sharing adjustments are removed in the segment analysis because the actual contract payments are based upon the experience of the full contract year, not the experience of interim periods. Torchmark expects its benefit ratio to be in line with pricing. Total premiums less total benefits will be the same for segment reporting purposes as they will be under GAAP for the full calendar year. The Company’s presentation results in the underwriting margin percentage in interim periods reflecting the expected margin percentage for the full year. These interim adjustments do not impact the full year results. An analysis of the adjustments for the difference in the interim results as presented for segment purposes and GAAP for Medicare Part D is as follows: Six Months Ended 2015 2014 Benefit costs deferred $ 47,335 $ 60,899 Government risk-sharing premium adjustment (16,470 ) (35,131 ) Pre-tax addition to segment interim period income $ 30,865 $ 25,768 After tax amount $ 20,062 $ 16,749 Additionally, management does not view the risk-sharing premium for Medicare Part D as a component of premium income, and accordingly adjusts health premium income in its segment analysis. A reconciliation of health premium included in the segment analysis with health premium as reported in the Condensed Consolidated Statements of Operations is presented in the following table. Six Months Ended 2015 2014 % Change Premium per segment analysis: Medicare Part D premium $ 154,705 $ 167,990 (8 ) Other health premium 461,082 434,533 6 Part D risk-sharing adjustment 16,470 35,131 (53 ) Health premium per Condensed Consolidated Statements of Operations $ 632,257 $ 637,654 (1 ) During the first six months of 2014 , Torchmark accrued for certain litigation cases in the net amount of $3.7 million ( $2.4 million after tax) that were not directly related to its insurance operations. Additionally, Torchmark received $1.3 million ( $853 thousand after tax) in settlement of litigation regarding investments. Also in the second quarter of 2014, the Company recorded $3.1 million in administrative settlements ( $2.0 million after tax) related to benefits paid for deaths occurring in prior years where claims had not been filed. These administrative settlements were the result of the Company's program of matching policyholder information against the Social Security death master file and obtaining due proof of loss. These administrative settlements were included in "Policyholder benefits" in the Consolidated Statements of Operations in 2014. Torchmark removes these segment analysis amounts that do not relate to its core insurance operations. The following tables set forth a reconciliation of Torchmark’s revenues and operations by segment to its pretax income and each significant line item in its Condensed Consolidated Statements of Operations . Reconciliation of Segment Operating Information to the Consolidated Statement of Operations For the Six Months Ended June 30, 2015 Life Health Medicare Part D Annuity Investment Other & Corporate Adjustments Consolidated Revenue: Premium $ 1,033,380 $ 461,082 $ 154,705 $ 78 $ 16,470 (1) $ 1,665,715 Net investment income $ 386,419 386,419 Other income $ 1,464 (104 ) (3) 1,360 Total revenue 1,033,380 461,082 154,705 78 386,419 1,464 16,366 2,053,494 Expenses: Policy benefits 687,065 299,227 130,764 19,799 47,335 (1) 1,184,190 Required interest on: Policy reserves (273,615 ) (34,034 ) (26,756 ) 334,405 — Deferred acquisition costs 85,985 11,358 446 607 (98,396 ) — Amortization of acquisition costs 177,265 40,924 1,769 4,209 224,167 Commissions, premium taxes, and non-deferred acquisition costs 75,900 40,418 11,049 23 (104 ) (3) 127,286 Insurance administrative expense (2) 94,063 94,063 Parent expense 4,485 4,485 Stock compensation expense 15,041 15,041 Interest expense 38,174 38,174 Total expenses 752,600 357,893 144,028 (2,118 ) 274,183 113,589 47,231 1,687,406 Subtotal 280,780 103,189 10,677 2,196 112,236 (112,125 ) (30,865 ) 366,088 Nonoperating items 30,865 (1) 30,865 Measure of segment profitability (pretax) $ 280,780 $ 103,189 $ 10,677 $ 2,196 $ 112,236 $ (112,125 ) $ — 396,953 Deduct applicable income taxes (129,909 ) Segment profits after tax 267,044 Add back income taxes applicable to segment profitability 129,909 Add (deduct) realized investment gains (losses) 2,732 Deduct Part D adjustment (1) (30,865 ) Pretax income per Condensed Consolidated Statement of Operations $ 368,820 (1) Medicare Part D items adjusted to GAAP from the segment analysis, which matches expected benefits with policy premium. (2) Administrative expense is not allocated to insurance segments. (3) Elimination of intersegment commission. Reconciliation of Segment Operating Information to the Condensed Consolidated Statement of Operations * For the Six Months Ended June 30, 2014 Life Health Medicare Part D Annuity Investment Other & Corporate Adjustments Consolidated Revenue: Premium $ 981,010 $ 434,533 $ 167,990 $ 222 $ 35,131 (1) $ 1,618,886 Net investment income $ 377,981 377,981 Other income $ 1,266 (122 ) (3) 1,144 Total revenue 981,010 434,533 167,990 222 377,981 1,266 35,009 1,998,011 Expenses: Policy benefits 641,311 280,140 135,233 21,084 63,956 (1,5) 1,141,724 Required interest on: Policy reserves (262,328 ) (31,758 ) (27,616 ) 321,702 — Deferred acquisition costs 83,633 11,223 354 764 (95,974 ) — Amortization of acquisition costs 167,991 36,072 1,377 3,854 209,294 Commissions, premium taxes, and non-deferred acquisition costs 69,068 39,611 12,815 26 (122 ) (3) 121,398 Insurance administrative expense (2) 89,573 2,337 (4) 91,910 Parent expense 4,045 4,045 Stock compensation expense 17,401 17,401 Interest expense 38,086 38,086 Total expenses 699,675 335,288 149,779 (1,888 ) 263,814 111,019 66,171 1,623,858 Subtotal 281,335 99,245 18,211 2,110 114,167 (109,753 ) (31,162 ) 374,153 Nonoperating items 31,162 (1,4,5) 31,162 Measure of segment profitability (pretax) $ 281,335 $ 99,245 $ 18,211 $ 2,110 $ 114,167 $ (109,753 ) $ — 405,315 Deduct applicable income taxes (132,458 ) Segment profits after tax 272,857 Add back income taxes applicable to segment profitability 132,458 Add (deduct) realized investment gains (losses) 17,196 Deduct Part D adjustment (1) (25,768 ) Deduct legal settlement expenses (4) (2,337 ) Deduct administrative settlements (5) (3,057 ) Pretax income from continuing operations per Condensed Consolidated Statement of Operations $ 391,349 (1) Medicare Part D items adjusted to GAAP from the segment analysis, which matches expected benefits with policy premium. (2) Administrative expense is not allocated to insurance segments. (3) Elimination of intersegment commission. (4) Legal settlement expenses. (5) Administrative settlements. * Retrospectively adjusted to give effect to the adoption of ASU 2014-01 as described in Note G-Adoption of New Accounting Standards. The following table summarizes the measures of segment profitability for comparison. It also reconciles segment profits to net income. Analysis of Profitability by Segment Six Months Ended June 30, Increase (Decrease) 2015 2014* Amount % Life $ 280,780 $ 281,335 $ (555 ) — Health 103,189 99,245 3,944 4 Medicare Part D 10,677 18,211 (7,534 ) (41 ) Annuity 2,196 2,110 86 4 Investment 112,236 114,167 (1,931 ) (2 ) Other and corporate: Other income 1,464 1,266 198 16 Administrative expense (94,063 ) (89,573 ) (4,490 ) 5 Corporate (19,526 ) (21,446 ) 1,920 (9 ) Pretax total 396,953 405,315 (8,362 ) (2 ) Applicable taxes (129,909 ) (132,458 ) 2,549 (2 ) Total 267,044 272,857 (5,813 ) (2 ) Reconciling items, net of tax: Realized gains (losses) - Investments 1,776 11,177 (9,401 ) Part D adjustment (20,062 ) (16,749 ) (3,313 ) Administrative settlements — (1,987 ) 1,987 Legal settlement expense — (1,519 ) 1,519 Net income $ 248,758 $ 263,779 $ (15,021 ) (6 ) * Retrospectively adjusted to give effect to the adoption of ASU 2014-01 as described in Note G-Adoption of New Accounting Standards.

Adoption of New Accounting Stan

Adoption of New Accounting Standards	6 Months Ended
	Jun. 30, 2015
Accounting Changes and Error Corrections [Abstract]
Adoption of New Accounting Standards	Adoption of New Accounting Standards Low-income housing tax credits: As described in Note A , the FASB issued and Torchmark adopted new guidance concerning Investments-Equity Method and Joint Ventures: Accounting for Investments in Qualified Affordable Housing Projects (ASU 2014-01 ) as of January 1, 2015. The guidance replaces the effective-yield method of amortization with respect to investments in qualified affordable housing acquired after the date of adoption and, if certain conditions are present, provides for a proportional amortization method. The proportional amortization method allows an investor to amortize the cost of its investment based on the proportion of the tax credits received during the year to the total expected tax credits to be received over the life of the investment. The guidance further provides that the effective-yield method of amortization may continue to be used with respect to investments acquired before the date of adoption. Amortization, previously required to be recognized in the Condensed Consolidated Statements of Operations as a component of "Net investment income", will now be included in "Income tax expense." Torchmark will continue to use the effective-yield method of amortization with respect to its guaranteed investments acquired prior to January 1, 2015, but will retroactively adopt the new guidance and apply the proportional method of amortization with respect to its non-guaranteed investments. The proportional method of amortization is consistent with Torchmark’s historical method of amortization. As a result, the only impact of the adoption is to reclassify amortization expense from “Net investment income” to “Income tax expense” with no impact on Torchmark's historical net income, cash flows, liquidity, or statutory earnings of its insurance subsidiaries. The following table reflects a summary of the impact of the retrospectively adjusted balances on the Company's Condensed Consolidated Statements of Operations for the three and six months ended June 30, 2014 . Three Months Ended June 30, 2014 Income Statement As previously reported Adjustments As adjusted Net investment income $ 182,877 $ 7,053 $ 189,930 Total revenue 983,983 7,053 991,036 Income before income taxes 186,758 7,053 193,811 Income taxes (55,835 ) (7,053 ) (62,888 ) Net income 130,923 — 130,923 Six Months Ended June 30, 2014 Income Statement As previously reported Adjustments As adjusted Net investment income $ 363,877 $ 14,104 $ 377,981 Total revenue 2,001,103 14,104 2,015,207 Income before income taxes 377,245 14,104 391,349 Income taxes (113,466 ) (14,104 ) (127,570 ) Net income 263,779 — 263,779 Debt Issuance Costs: In April 2015, the FASB issued Interest—Imputation of Interest: Simplifying the Presentation of Debt Issuance Costs (ASU 2015-03). The guidance will require companies to change the presentation of debt issuance costs in the financial statements by presenting such costs as a direct deduction from the related debt liability rather than as an asset. Amortization of the costs will still be reported as interest expense. The guidance is effective for fiscal years and interim periods beginning after December 15, 2015 with early adoption permitted. Torchmark adopted this ASU upon issuance.

Accounting Policies (Policies)

Accounting Policies (Policies)	6 Months Ended
	Jun. 30, 2015
Accounting Policies [Abstract]
Basis of Presentation	The accompanying condensed consolidated financial statements have been prepared in accordance with the instructions to Form 10-Q. Therefore, they do not include all of the annual disclosures required by accounting principles generally accepted in the United States of America (GAAP). However, in the opinion of management, these statements include all adjustments, consisting of normal recurring adjustments, which are necessary for a fair presentation of the condensed consolidated financial position at June 30, 2015 , and the condensed consolidated results of operations, comprehensive income, and cash flows for the periods ended June 30, 2015 and 2014 . The interim period condensed consolidated financial statements should be read in conjunction with the Condensed Consolidated Financial Statements that are included in the Form 10-K filed on February 27, 2015.

Earnings Per Share (Tables)

Earnings Per Share (Tables)	6 Months Ended
	Jun. 30, 2015
Earnings Per Share [Abstract]
Reconciliation of Basic and Diluted Weighted-Average Shares Outstanding	A reconciliation of basic and diluted weighted-average shares outstanding is as follows: For the Three Months Ended For the Six Months Ended 2015 2014 2015 2014 Basic weighted average shares outstanding 125,816,943 131,491,182 126,465,420 132,322,704 Weighted average dilutive options outstanding 1,622,698 1,823,640 1,553,309 1,856,496 Diluted weighted average shares outstanding 127,439,641 133,314,822 128,018,729 134,179,200 Antidilutive shares — — — —

Postretirement Benefit Plans (T

Postretirement Benefit Plans (Tables)	6 Months Ended
	Jun. 30, 2015
Compensation and Retirement Disclosure [Abstract]
Schedule of Post-Retirement Benefit Costs	The following tables present a summary of post-retirement benefit costs by component. Components of Post-Retirement Benefit Costs Three Months Ended June 30, Pension Benefits Other Benefits 2015 2014 2015 2014 Service cost $ 3,991 $ 3,231 $ — $ (7 ) Interest cost 5,004 4,819 204 150 Expected return on assets (5,323 ) (4,752 ) — — Amortization: Prior service cost 82 529 — — Actuarial (gain) loss 3,534 2,047 37 — Direct recognition of expense — — 151 (42 ) Net periodic benefit cost $ 7,288 $ 5,874 $ 392 $ 101 Six Months Ended June 30, Pension Benefits Other Benefits 2015 2014 2015 2014 Service cost $ 7,981 $ 6,463 $ — $ 49 Interest cost 10,006 9,638 407 297 Expected return on assets (10,646 ) (9,505 ) — — Amortization: Prior service cost 163 1,057 — — Actuarial (gain)/loss 7,068 4,092 60 — Direct recognition of expense — — 327 (104 ) Net periodic benefit cost $ 14,572 $ 11,745 $ 794 $ 242
Schedule of Defined-Benefit Plans Disclosures	The following chart presents assets at fair value for the defined-benefit pension plans at June 30, 2015 and the prior-year end. Pension Assets by Component June 30, 2015 December 31, 2014 Amount % Amount % Corporate debt $ 155,642 48 $ 166,825 52 Other fixed maturities 277 — 284 — Equity securities 127,530 40 127,568 39 Short-term investments 19,047 6 9,038 3 Guaranteed annuity contract 15,259 5 15,027 5 Other 3,063 1 4,156 1 Total $ 320,818 100 $ 322,898 100

Investments (Tables)

Investments (Tables)	6 Months Ended
	Jun. 30, 2015
Investments, Debt and Equity Securities [Abstract]
Summary of Fixed Maturities and Equity Securities Available for Sale by Component	A summary of fixed maturities and equity securities available for sale by cost or amortized cost and estimated fair value at June 30, 2015 is as follows: Portfolio Composition as of June 30, 2015 Cost or Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value % of Total Fixed Maturities* Fixed maturities available for sale: Bonds: U.S. Government direct, guaranteed, and government-sponsored enterprises $ 371,529 $ 449 $ (17,422 ) $ 354,556 3 States, municipalities, and political subdivisions 1,298,664 132,850 (2,151 ) 1,429,363 10 Foreign governments 23,037 1,425 (379 ) 24,083 — Corporates, by sector: Financial 2,675,863 314,572 (38,366 ) 2,952,069 21 Utilities 2,138,355 258,616 (27,006 ) 2,369,965 17 Energy 1,541,450 115,442 (46,261 ) 1,610,631 11 Other corporate sectors 4,514,626 360,704 (110,304 ) 4,765,026 34 Total corporates 10,870,294 1,049,334 (221,937 ) 11,697,691 83 Collateralized debt obligations 64,782 16,525 (7,639 ) 73,668 — Other asset-backed securities 19,450 1,182 — 20,632 — Redeemable preferred stocks, by sector: Financial 450,496 48,332 (6,754 ) 492,074 4 Utilities 28,666 751 (22 ) 29,395 — Total redeemable preferred stocks 479,162 49,083 (6,776 ) 521,469 4 Total fixed maturities 13,126,918 1,250,848 (256,304 ) 14,121,462 100 Equity securities 776 769 — 1,545 Total fixed maturities and equity securities $ 13,127,694 $ 1,251,617 $ (256,304 ) $ 14,123,007 * At fair value
Schedule of Fixed Maturities by Contractual Maturity	A schedule of fixed maturities by contractual maturity date at June 30, 2015 is shown below on an amortized cost basis and on a fair value basis. Actual maturity dates could differ from contractual maturities due to call or prepayment provisions. Amortized Cost Fair Value Fixed maturities available for sale: Due in one year or less $ 72,803 $ 73,790 Due from one to five years 533,791 592,958 Due from five to ten years 972,641 1,063,069 Due from ten to twenty years 3,827,375 4,267,617 Due after twenty years 7,633,945 8,027,399 Mortgage-backed and asset-backed securities 86,363 96,629 $ 13,126,918 $ 14,121,462
Schedule of Selected Information about Sales of Fixed Maturities	Selected information about sales of fixed maturities is as follows. For the Six Months Ended June 30, 2015 2014 Proceeds from sales $ 14,287 $ 28,194 Gross realized gains 82 16,286 Gross realized losses (104 ) (3 )
Assets Measured at Fair Value on Recurring Basis	The following table represents assets measured at fair value on a recurring basis. Fair Value Measurements at June 30, 2015 Using: Description Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Total Fair Value Fixed maturities available for sale: Bonds: U.S. Government direct, guaranteed, and government-sponsored enterprises $ — $ 354,556 $ — $ 354,556 States, municipalities, and political subdivisions — 1,429,363 — 1,429,363 Foreign governments — 24,083 — 24,083 Corporates, by sector: Financial — 2,883,531 68,538 2,952,069 Utilities 25,174 2,209,586 135,205 2,369,965 Energy — 1,583,301 27,330 1,610,631 Other corporate sectors — 4,474,070 290,956 4,765,026 Total corporates 25,174 11,150,488 522,029 11,697,691 Collateralized debt obligations — — 73,668 73,668 Other asset-backed securities — 20,632 — 20,632 Redeemable preferred stocks, by sector: Financial 15,226 476,848 — 492,074 Utilities — 29,395 — 29,395 Total redeemable preferred stocks 15,226 506,243 — 521,469 Total fixed maturities 40,400 13,485,365 595,697 14,121,462 Equity securities 712 — 833 1,545 Total fixed maturities and equity securities $ 41,112 $ 13,485,365 $ 596,530 $ 14,123,007 Percent of total 0.3 % 95.5 % 4.2 % 100.0 %
Schedule of Changes in Assets Measured at Fair Value on a Recurring Basis Using Significant Unobservable Inputs	The following table represents an analysis of changes in fair value measurements using significant unobservable inputs (Level 3). Analysis of Changes in Fair Value Measurements Using Significant Unobservable Inputs (Level 3) For the Six Months Ended June 30, 2015 Collateralized debt obligations Corporates (1) Equities Total Balance at January 1, 2015 $ 63,232 $ 512,714 $ 833 $ 576,779 Total gains or losses: Included in realized gains/losses — — — — Included in other comprehensive income 13,531 (8,426 ) — 5,105 Acquisitions — 19,400 — 19,400 Amortization 2,810 7 — 2,817 Other (2) (5,905 ) (1,666 ) — (7,571 ) Transfers in and/or out of Level 3 (3) — — — — Balance at June 30, 2015 $ 73,668 $ 522,029 $ 833 $ 596,530 Percent of total fixed maturity and equity securities 0.5 % 3.7 % — % 4.2 % For the Six Months Ended June 30, 2014 Collateralized debt obligations Corporates (1) Equities Total Balance at January 1, 2014 $ 58,205 $ 300,300 $ 776 $ 359,281 Total gains or losses: Included in realized gains/losses 15,924 1 — 15,925 Included in other comprehensive income 8,702 19,513 57 28,272 Acquisitions — 90,680 — 90,680 Sales (16,049 ) (1 ) — (16,050 ) Amortization 2,668 5 — 2,673 Other (2) (3,231 ) (1,165 ) — (4,396 ) Transfers in and/or out of Level 3 (3) — — — — Balance at June 30, 2014 $ 66,219 $ 409,333 $ 833 $ 476,385 Percent of total fixed maturity and equity securities 0.5 % 2.9 % — % 3.4 % (1) Includes redeemable preferred stocks. (2) Includes capitalized interest, foreign exchange adjustments, and principal repayments. (3) Considered to be transferred at the end of the period. Transfers into Level 3 occur when observable inputs are no longer available. Transfers out of Level 3 occur when observable inputs become available.
Schedule of Additional Information About Investments in Unrealized Loss Position	The following table discloses information about investments in an unrealized loss position. Less than Twelve Months Twelve Months or Longer Total Number of issues (Cusip numbers) held: As of June 30, 2015 407 61 468 As of December 31, 2014 80 173 253
Schedule of Unrealized Investment Losses by Class of Investment	The following table discloses unrealized investment losses by class of investment at June 30, 2015 for the period of time in a loss position. Torchmark does not view these investments as other-than-temporarily impaired. Analysis of Gross Unrealized Investment Losses At June 30, 2015 Less than Twelve Months Twelve Months or Longer Total Description of Securities Fair Value Unrealized Loss Fair Value Unrealized Loss Fair Value Unrealized Loss Fixed maturities available for sale: Investment grade: Bonds: U.S. Government direct, guaranteed, and government-sponsored enterprises $ 305,538 $ (16,522 ) $ 14,642 $ (900 ) $ 320,180 $ (17,422 ) States, municipalities and political subdivisions 79,844 (1,803 ) 1,687 (112 ) 81,531 (1,915 ) Foreign governments 4,134 (379 ) — — 4,134 (379 ) Corporates, by sector: Financial 334,577 (17,515 ) — — 334,577 (17,515 ) Utilities 498,821 (27,006 ) — — 498,821 (27,006 ) Energy 372,105 (30,440 ) 59,712 (9,727 ) 431,817 (40,167 ) Other corporate sectors 1,530,184 (96,962 ) 45,852 (7,340 ) 1,576,036 (104,302 ) Total corporates 2,735,687 (171,923 ) 105,564 (17,067 ) 2,841,251 (188,990 ) Redeemable preferred stocks, by sector: Utilities — — 1,645 (22 ) 1,645 (22 ) Total redeemable preferred stocks — — 1,645 (22 ) 1,645 (22 ) Total investment grade 3,125,203 (190,627 ) 123,538 (18,101 ) 3,248,741 (208,728 ) Below investment grade: Bonds: States, municipalities and political subdivisions — — 319 (236 ) 319 (236 ) Corporates, by sector: Financial — — 84,947 (20,851 ) 84,947 (20,851 ) Energy 55,653 (6,094 ) — — 55,653 (6,094 ) Other corporate sectors 15,889 (823 ) 57,213 (5,179 ) 73,102 (6,002 ) Total corporates 71,542 (6,917 ) 142,160 (26,030 ) 213,702 (32,947 ) Collateralized debt obligations — — 12,361 (7,639 ) 12,361 (7,639 ) Redeemable preferred stocks, by sector: Financial — — 55,582 (6,754 ) 55,582 (6,754 ) Total redeemable preferred stocks — — 55,582 (6,754 ) 55,582 (6,754 ) Total below investment grade 71,542 (6,917 ) 210,422 (40,659 ) 281,964 (47,576 ) Total fixed maturities 3,196,745 (197,544 ) 333,960 (58,760 ) 3,530,705 (256,304 ) Equity securities — — — — — — Total fixed maturities and equity securities $ 3,196,745 $ (197,544 ) $ 333,960 $ (58,760 ) $ 3,530,705 $ (256,304 )

Supplemental Information abou18

Supplemental Information about Changes to Accumulated Other Comprehensive Income (Tables)	6 Months Ended
	Jun. 30, 2015
Equity [Abstract]
Schedule of Change in Balance by Component of Accumulated Other Comprehensive Income	An analysis of the change in balance by component of Accumulated Other Comprehensive Income is as follows for the three and six month periods ended June 30, 2015 and 2014 . Components of Accumulated Other Comprehensive Income For the Three Months Ended June 30, 2015 Available for Deferred Foreign Pension Total Balance at April 1, 2015 $ 1,261,518 $ (10,334 ) $ 11,424 $ (96,967 ) $ 1,165,641 Other comprehensive income (loss) before reclassifications, net of tax (609,544 ) 1,919 (3,071 ) — (610,696 ) Reclassifications, net of tax (2,001 ) — — 2,375 374 Other comprehensive income (loss) (611,545 ) 1,919 (3,071 ) 2,375 (610,322 ) Balance at June 30, 2015 $ 649,973 $ (8,415 ) $ 8,353 $ (94,592 ) $ 555,319 For the Three Months Ended June 30, 2014 Available Deferred Foreign Pension Total Balance at April 1, 2014 $ 653,086 $ (9,476 ) $ 24,128 $ (61,680 ) $ 606,058 Other comprehensive income (loss) before reclassifications, net of tax 281,810 (1,979 ) 1,996 297 282,124 Reclassifications, net of tax (1,881 ) — — 1,673 (208 ) Other comprehensive income (loss) 279,929 (1,979 ) 1,996 1,970 281,916 Balance at June 30, 2014 $ 933,015 $ (11,455 ) $ 26,124 $ (59,710 ) $ 887,974 Note E—Supplemental Information about Changes to Accumulated Other Comprehensive Income (continued) Components of Accumulated Other Comprehensive Income For the Six Months Ended June 30, 2015 Available for Sale Assets Deferred Acquisition Costs Foreign Exchange Pension Adjustments Total Balance at January 1, 2015 $ 1,090,273 $ (10,758 ) $ 17,386 $ (99,449 ) $ 997,452 Other comprehensive income (loss) before reclassifications, net of tax (437,135 ) 2,343 (9,033 ) 117 (443,708 ) Reclassifications, net of tax (3,165 ) — — 4,740 1,575 Other comprehensive income (loss) (440,300 ) 2,343 (9,033 ) 4,857 (442,133 ) Balance at June 30, 2015 $ 649,973 $ (8,415 ) $ 8,353 $ (94,592 ) $ 555,319 For the Six Months Ended June 30, 2014 Available for Sale Assets Deferred Acquisition Costs Foreign Exchange Pension Adjustments Total Balance at January 1, 2014 $ 256,196 $ (6,728 ) $ 24,866 $ (63,353 ) $ 210,981 Other comprehensive income (loss) before reclassifications, net of tax 690,949 (4,727 ) 1,258 297 687,777 Reclassifications, net of tax (14,130 ) — — 3,346 (10,784 ) Other comprehensive income (loss) 676,819 (4,727 ) 1,258 3,643 676,993 Balance at June 30, 2014 $ 933,015 $ (11,455 ) $ 26,124 $ (59,710 ) $ 887,974
Summary of Reclassifications Out of Accumulated Other Comprehensive Income	Reclassifications out of Accumulated Other Comprehensive Income are presented below for the three and six month periods ended June 30, 2015 and 2014 . Reclassification Adjustments Three Months Ended Six Months Ended Affected line items in the Statement of Operations 2015 2014 2015 2014 Unrealized investment gains (losses) on available for sale assets: Realized (gains) losses $ (1,479 ) $ (577 ) $ (1,598 ) $ (17,196 ) Realized investment gains (losses) Amortization of (discount) premium (1,599 ) (2,317 ) (3,271 ) (4,544 ) Net investment income Total before tax (3,078 ) (2,894 ) (4,869 ) (21,740 ) Tax 1,077 1,013 1,704 7,610 Income Taxes Total after tax (2,001 ) (1,881 ) (3,165 ) (14,130 ) Pension adjustments: Amortization of prior service cost 82 528 163 1,056 Other operating expenses Amortization of actuarial gain (loss) 3,571 2,046 7,128 4,092 Other operating expenses Total before tax 3,653 2,574 7,291 5,148 Tax (1,278 ) (901 ) (2,551 ) (1,802 ) Income Taxes Total after tax 2,375 1,673 4,740 3,346 Total reclassifications (after tax) $ 374 $ (208 ) $ 1,575 $ (10,784 )

Business Segments (Tables)

Business Segments (Tables)	6 Months Ended
	Jun. 30, 2015
Segment Reporting [Abstract]
Schedule of Adjustments for Difference in Interim Medicare Part D Results for Segment Purposes and Gaap Table	An analysis of the adjustments for the difference in the interim results as presented for segment purposes and GAAP for Medicare Part D is as follows: Six Months Ended 2015 2014 Benefit costs deferred $ 47,335 $ 60,899 Government risk-sharing premium adjustment (16,470 ) (35,131 ) Pre-tax addition to segment interim period income $ 30,865 $ 25,768 After tax amount $ 20,062 $ 16,749
Reconciliation of Health Premium Included in the Segment Analysis	A reconciliation of health premium included in the segment analysis with health premium as reported in the Condensed Consolidated Statements of Operations is presented in the following table. Six Months Ended 2015 2014 % Change Premium per segment analysis: Medicare Part D premium $ 154,705 $ 167,990 (8 ) Other health premium 461,082 434,533 6 Part D risk-sharing adjustment 16,470 35,131 (53 ) Health premium per Condensed Consolidated Statements of Operations $ 632,257 $ 637,654 (1 )
Reconciliation of Segment Operating Information to Consolidated Statement of Operations	Reconciliation of Segment Operating Information to the Consolidated Statement of Operations For the Six Months Ended June 30, 2015 Life Health Medicare Part D Annuity Investment Other & Corporate Adjustments Consolidated Revenue: Premium $ 1,033,380 $ 461,082 $ 154,705 $ 78 $ 16,470 (1) $ 1,665,715 Net investment income $ 386,419 386,419 Other income $ 1,464 (104 ) (3) 1,360 Total revenue 1,033,380 461,082 154,705 78 386,419 1,464 16,366 2,053,494 Expenses: Policy benefits 687,065 299,227 130,764 19,799 47,335 (1) 1,184,190 Required interest on: Policy reserves (273,615 ) (34,034 ) (26,756 ) 334,405 — Deferred acquisition costs 85,985 11,358 446 607 (98,396 ) — Amortization of acquisition costs 177,265 40,924 1,769 4,209 224,167 Commissions, premium taxes, and non-deferred acquisition costs 75,900 40,418 11,049 23 (104 ) (3) 127,286 Insurance administrative expense (2) 94,063 94,063 Parent expense 4,485 4,485 Stock compensation expense 15,041 15,041 Interest expense 38,174 38,174 Total expenses 752,600 357,893 144,028 (2,118 ) 274,183 113,589 47,231 1,687,406 Subtotal 280,780 103,189 10,677 2,196 112,236 (112,125 ) (30,865 ) 366,088 Nonoperating items 30,865 (1) 30,865 Measure of segment profitability (pretax) $ 280,780 $ 103,189 $ 10,677 $ 2,196 $ 112,236 $ (112,125 ) $ — 396,953 Deduct applicable income taxes (129,909 ) Segment profits after tax 267,044 Add back income taxes applicable to segment profitability 129,909 Add (deduct) realized investment gains (losses) 2,732 Deduct Part D adjustment (1) (30,865 ) Pretax income per Condensed Consolidated Statement of Operations $ 368,820 (1) Medicare Part D items adjusted to GAAP from the segment analysis, which matches expected benefits with policy premium. (2) Administrative expense is not allocated to insurance segments. (3) Elimination of intersegment commission. Reconciliation of Segment Operating Information to the Condensed Consolidated Statement of Operations * For the Six Months Ended June 30, 2014 Life Health Medicare Part D Annuity Investment Other & Corporate Adjustments Consolidated Revenue: Premium $ 981,010 $ 434,533 $ 167,990 $ 222 $ 35,131 (1) $ 1,618,886 Net investment income $ 377,981 377,981 Other income $ 1,266 (122 ) (3) 1,144 Total revenue 981,010 434,533 167,990 222 377,981 1,266 35,009 1,998,011 Expenses: Policy benefits 641,311 280,140 135,233 21,084 63,956 (1,5) 1,141,724 Required interest on: Policy reserves (262,328 ) (31,758 ) (27,616 ) 321,702 — Deferred acquisition costs 83,633 11,223 354 764 (95,974 ) — Amortization of acquisition costs 167,991 36,072 1,377 3,854 209,294 Commissions, premium taxes, and non-deferred acquisition costs 69,068 39,611 12,815 26 (122 ) (3) 121,398 Insurance administrative expense (2) 89,573 2,337 (4) 91,910 Parent expense 4,045 4,045 Stock compensation expense 17,401 17,401 Interest expense 38,086 38,086 Total expenses 699,675 335,288 149,779 (1,888 ) 263,814 111,019 66,171 1,623,858 Subtotal 281,335 99,245 18,211 2,110 114,167 (109,753 ) (31,162 ) 374,153 Nonoperating items 31,162 (1,4,5) 31,162 Measure of segment profitability (pretax) $ 281,335 $ 99,245 $ 18,211 $ 2,110 $ 114,167 $ (109,753 ) $ — 405,315 Deduct applicable income taxes (132,458 ) Segment profits after tax 272,857 Add back income taxes applicable to segment profitability 132,458 Add (deduct) realized investment gains (losses) 17,196 Deduct Part D adjustment (1) (25,768 ) Deduct legal settlement expenses (4) (2,337 ) Deduct administrative settlements (5) (3,057 ) Pretax income from continuing operations per Condensed Consolidated Statement of Operations $ 391,349 (1) Medicare Part D items adjusted to GAAP from the segment analysis, which matches expected benefits with policy premium. (2) Administrative expense is not allocated to insurance segments. (3) Elimination of intersegment commission. (4) Legal settlement expenses. (5) Administrative settlements. * Retrospectively adjusted to give effect to the adoption of ASU 2014-01 as described in Note G-Adoption of New Accounting Standards.
Analysis of Profitability By Segment	The following table summarizes the measures of segment profitability for comparison. It also reconciles segment profits to net income. Analysis of Profitability by Segment Six Months Ended June 30, Increase (Decrease) 2015 2014* Amount % Life $ 280,780 $ 281,335 $ (555 ) — Health 103,189 99,245 3,944 4 Medicare Part D 10,677 18,211 (7,534 ) (41 ) Annuity 2,196 2,110 86 4 Investment 112,236 114,167 (1,931 ) (2 ) Other and corporate: Other income 1,464 1,266 198 16 Administrative expense (94,063 ) (89,573 ) (4,490 ) 5 Corporate (19,526 ) (21,446 ) 1,920 (9 ) Pretax total 396,953 405,315 (8,362 ) (2 ) Applicable taxes (129,909 ) (132,458 ) 2,549 (2 ) Total 267,044 272,857 (5,813 ) (2 ) Reconciling items, net of tax: Realized gains (losses) - Investments 1,776 11,177 (9,401 ) Part D adjustment (20,062 ) (16,749 ) (3,313 ) Administrative settlements — (1,987 ) 1,987 Legal settlement expense — (1,519 ) 1,519 Net income $ 248,758 $ 263,779 $ (15,021 ) (6 ) * Retrospectively adjusted to give effect to the adoption of ASU 2014-01 as described in Note G-Adoption of New Accounting Standards.

Adoption of New Accounting St20

Adoption of New Accounting Standards (Tables)	6 Months Ended
	Jun. 30, 2015
Accounting Changes and Error Corrections [Abstract]
Schedule of New Accounting Pronouncements and Changes in Accounting Principles	The following table reflects a summary of the impact of the retrospectively adjusted balances on the Company's Condensed Consolidated Statements of Operations for the three and six months ended June 30, 2014 . Three Months Ended June 30, 2014 Income Statement As previously reported Adjustments As adjusted Net investment income $ 182,877 $ 7,053 $ 189,930 Total revenue 983,983 7,053 991,036 Income before income taxes 186,758 7,053 193,811 Income taxes (55,835 ) (7,053 ) (62,888 ) Net income 130,923 — 130,923 Six Months Ended June 30, 2014 Income Statement As previously reported Adjustments As adjusted Net investment income $ 363,877 $ 14,104 $ 377,981 Total revenue 2,001,103 14,104 2,015,207 Income before income taxes 377,245 14,104 391,349 Income taxes (113,466 ) (14,104 ) (127,570 ) Net income 263,779 — 263,779

Earnings Per Share - Reconcilia

Earnings Per Share - Reconciliation of Basic and Diluted Weighted - Average Shares Outstanding (Detail) - shares	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Earnings Per Share [Abstract]
Basic weighted average shares outstanding	125,816,943	131,491,182	126,465,420	132,322,704
Weighted average dilutive options outstanding	1,622,698	1,823,640	1,553,309	1,856,496
Diluted weighted average shares outstanding	127,439,641	133,314,822	128,018,729	134,179,200
Antidilutive shares	0	0	0	0

Postretirement Benefit Plans -

Postretirement Benefit Plans - Schedule of Post-Retirement Benefit Costs (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 3,991	$ 3,231	$ 7,981	$ 6,463
Interest cost	5,004	4,819	10,006	9,638
Expected return on assets	(5,323)	(4,752)	(10,646)	(9,505)
Amortization:
Prior service cost	82	529	163	1,057
Actuarial (gain) loss	3,534	2,047	7,068	4,092
Direct recognition of expense	0	0	0	0
Net periodic benefit cost	7,288	5,874	14,572	11,745
Other Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	0	(7)	0	49
Interest cost	204	150	407	297
Expected return on assets	0	0	0	0
Amortization:
Prior service cost	0	0	0	0
Actuarial (gain) loss	37	0	60	0
Direct recognition of expense	151	(42)	327	(104)
Net periodic benefit cost	$ 392	$ 101	$ 794	$ 242

Postretirement Benefit Plans 23

Postretirement Benefit Plans - Schedule of Defined-Benefit Plans Disclosures (Detail) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Defined Benefit Plan Disclosure [Line Items]
Defined benefit pension plans-fair value of plan assets	$ 320,818	$ 322,898
Percent of total pension assets	100.00%	100.00%
Other Fixed Maturities [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined benefit pension plans-fair value of plan assets	$ 277	$ 284
Percent of total pension assets	0.00%	0.00%
Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined benefit pension plans-fair value of plan assets	$ 127,530	$ 127,568
Percent of total pension assets	40.00%	39.00%
Guaranteed Annuity Contract [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined benefit pension plans-fair value of plan assets	$ 15,259	$ 15,027
Percent of total pension assets	5.00%	5.00%
Other [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined benefit pension plans-fair value of plan assets	$ 3,063	$ 4,156
Percent of total pension assets	1.00%	1.00%
Corporate Bonds [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined benefit pension plans-fair value of plan assets	$ 155,642	$ 166,825
Percent of total pension assets	48.00%	52.00%
Short-term Investments [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined benefit pension plans-fair value of plan assets	$ 19,047	$ 9,038
Percent of total pension assets	6.00%	3.00%

Postretirement Benefit Plans 24

Postretirement Benefit Plans - Additional Information (Detail) - USD ($) $ in Millions	6 Months Ended	12 Months Ended
	Jun. 30, 2015	Dec. 31, 2014
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Liability related to funded defined-benefit pension plans	$ 394	$ 403
Contributions to benefit plans	12
Insurance cash value and Rabbi Trust investments supporting supplemental pension plan liability	78	74
Non-qualified supplemental retirement pension plan liability	73	$ 71
Maximum [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Expected contributions in current fiscal year	$ 20

Investments - Summary of Fixed

Investments - Summary of Fixed Maturities and Equity Securities Available for Sale by Component (Detail) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Schedule of Available-for-sale Securities [Line Items]
Fixed Maturities, Available for Sale, Amortized Cost	$ 13,126,918	$ 12,823,612
Debt Securities Fair Value	14,121,462	14,493,060
Equity Securities Cost or Amortized Cost	776	776
Equity Securities Fair Value	1,545	$ 1,477
Total Available for Sale Securities Cost	13,127,694
Gross Unrealized Gains	1,251,617
Gross Unrealized Losses	(256,304)
Total Available for Sale Securities Fair Value	14,123,007
Equity Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Equity Securities Cost or Amortized Cost	776
Gross Unrealized Gains	769
Gross Unrealized Losses	0
Equity Securities Fair Value	1,545
Fixed Maturities [Member]
Schedule of Available-for-sale Securities [Line Items]
Fixed Maturities, Available for Sale, Amortized Cost	13,126,918
Gross Unrealized Gains	1,250,848
Gross Unrealized Losses	(256,304)
Debt Securities Fair Value	$ 14,121,462
Percentage of Total Fixed Maturities At Fair Value	100.00%
Fixed Maturities [Member] | U.S. Government Direct, Guaranteed, and Government-Sponsored Enterprises [Member]
Schedule of Available-for-sale Securities [Line Items]
Fixed Maturities, Available for Sale, Amortized Cost	$ 371,529
Gross Unrealized Gains	449
Gross Unrealized Losses	(17,422)
Debt Securities Fair Value	$ 354,556
Percentage of Total Fixed Maturities At Fair Value	3.00%
Fixed Maturities [Member] | States, Municipalities, and Political Subdivisions [Member]
Schedule of Available-for-sale Securities [Line Items]
Fixed Maturities, Available for Sale, Amortized Cost	$ 1,298,664
Gross Unrealized Gains	132,850
Gross Unrealized Losses	(2,151)
Debt Securities Fair Value	$ 1,429,363
Percentage of Total Fixed Maturities At Fair Value	10.00%
Fixed Maturities [Member] | Foreign Governments [Member]
Schedule of Available-for-sale Securities [Line Items]
Fixed Maturities, Available for Sale, Amortized Cost	$ 23,037
Gross Unrealized Gains	1,425
Gross Unrealized Losses	(379)
Debt Securities Fair Value	$ 24,083
Percentage of Total Fixed Maturities At Fair Value	0.00%
Fixed Maturities [Member] | Corporates [Member]
Schedule of Available-for-sale Securities [Line Items]
Fixed Maturities, Available for Sale, Amortized Cost	$ 10,870,294
Gross Unrealized Gains	1,049,334
Gross Unrealized Losses	(221,937)
Debt Securities Fair Value	$ 11,697,691
Percentage of Total Fixed Maturities At Fair Value	83.00%
Fixed Maturities [Member] | Collateralized Debt Obligations [Member]
Schedule of Available-for-sale Securities [Line Items]
Fixed Maturities, Available for Sale, Amortized Cost	$ 64,782
Gross Unrealized Gains	16,525
Gross Unrealized Losses	(7,639)
Debt Securities Fair Value	$ 73,668
Percentage of Total Fixed Maturities At Fair Value	0.00%
Fixed Maturities [Member] | Other Asset-backed Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Fixed Maturities, Available for Sale, Amortized Cost	$ 19,450
Gross Unrealized Gains	1,182
Gross Unrealized Losses	0
Debt Securities Fair Value	$ 20,632
Percentage of Total Fixed Maturities At Fair Value	0.00%
Fixed Maturities [Member] | Redeemable Preferred Stocks [Member]
Schedule of Available-for-sale Securities [Line Items]
Fixed Maturities, Available for Sale, Amortized Cost	$ 479,162
Gross Unrealized Gains	49,083
Gross Unrealized Losses	(6,776)
Debt Securities Fair Value	$ 521,469
Percentage of Total Fixed Maturities At Fair Value	4.00%
Financial [Member] | Fixed Maturities [Member] | Corporates [Member]
Schedule of Available-for-sale Securities [Line Items]
Fixed Maturities, Available for Sale, Amortized Cost	$ 2,675,863
Gross Unrealized Gains	314,572
Gross Unrealized Losses	(38,366)
Debt Securities Fair Value	$ 2,952,069
Percentage of Total Fixed Maturities At Fair Value	21.00%
Financial [Member] | Fixed Maturities [Member] | Redeemable Preferred Stocks [Member]
Schedule of Available-for-sale Securities [Line Items]
Fixed Maturities, Available for Sale, Amortized Cost	$ 450,496
Gross Unrealized Gains	48,332
Gross Unrealized Losses	(6,754)
Debt Securities Fair Value	$ 492,074
Percentage of Total Fixed Maturities At Fair Value	4.00%
Utilities [Member] | Fixed Maturities [Member] | Corporates [Member]
Schedule of Available-for-sale Securities [Line Items]
Fixed Maturities, Available for Sale, Amortized Cost	$ 2,138,355
Gross Unrealized Gains	258,616
Gross Unrealized Losses	(27,006)
Debt Securities Fair Value	$ 2,369,965
Percentage of Total Fixed Maturities At Fair Value	17.00%
Utilities [Member] | Fixed Maturities [Member] | Redeemable Preferred Stocks [Member]
Schedule of Available-for-sale Securities [Line Items]
Fixed Maturities, Available for Sale, Amortized Cost	$ 28,666
Gross Unrealized Gains	751
Gross Unrealized Losses	(22)
Debt Securities Fair Value	$ 29,395
Percentage of Total Fixed Maturities At Fair Value	0.00%
Energy [Member] | Fixed Maturities [Member] | Corporates [Member]
Schedule of Available-for-sale Securities [Line Items]
Fixed Maturities, Available for Sale, Amortized Cost	$ 1,541,450
Gross Unrealized Gains	115,442
Gross Unrealized Losses	(46,261)
Debt Securities Fair Value	$ 1,610,631
Percentage of Total Fixed Maturities At Fair Value	11.00%
Other Corporate Sectors [Member] | Fixed Maturities [Member] | Corporates [Member]
Schedule of Available-for-sale Securities [Line Items]
Fixed Maturities, Available for Sale, Amortized Cost	$ 4,514,626
Gross Unrealized Gains	360,704
Gross Unrealized Losses	(110,304)
Debt Securities Fair Value	$ 4,765,026
Percentage of Total Fixed Maturities At Fair Value	34.00%

Investments - Schedule of Fixed

Investments - Schedule of Fixed Maturities by Contractual Maturity (Detail) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Fixed Maturities, Available for Sale, Amortized Cost
Due in one year or less	$ 72,803
Due from one to five years	533,791
Due from five to ten years	972,641
Due from ten to twenty years	3,827,375
Due after twenty years	7,633,945
Mortgage-backed and asset-backed securities	86,363
Fixed Maturities, Available for Sale, Amortized Cost	13,126,918	$ 12,823,612
Fixed Maturities, Available for Sale, Fair Value
Due in one year or less	73,790
Due from one to five years	592,958
Due from five to ten years	1,063,069
Due from ten to twenty years	4,267,617
Due after twenty years	8,027,399
Mortgage-backed and asset-backed securities	96,629
Fixed Maturities, Available for Sale, Fair Value	$ 14,121,462	$ 14,493,060

Investments - Schedule of Selec

Investments - Schedule of Selected Information about Sales of Fixed Maturities (Detail) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Schedule of Available-for-sale Securities [Line Items]
Proceeds from sales	$ 14,287	$ 28,194
Fixed Maturities [Member]
Schedule of Available-for-sale Securities [Line Items]
Proceeds from sales	14,287	28,194
Gross realized gains	82	16,286
Gross realized losses	$ (104)	$ (3)

Investments - Assets Measured a

Investments - Assets Measured at Fair Value on Recurring Basis (Detail) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value fixed maturities measured on recurring basis	$ 14,121,462	$ 14,493,060
Equity securities	1,545	$ 1,477
Total fixed maturities and equity securities	$ 14,123,007
Percent of total	100.00%
Fixed Maturities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value fixed maturities measured on recurring basis	$ 14,121,462
Equity Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	1,545
U.S. Government Direct, Guaranteed, and Government-Sponsored Enterprises [Member] | Fixed Maturities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value fixed maturities measured on recurring basis	354,556
States, Municipalities, and Political Subdivisions [Member] | Fixed Maturities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value fixed maturities measured on recurring basis	1,429,363
Foreign Governments [Member] | Fixed Maturities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value fixed maturities measured on recurring basis	24,083
Corporates [Member] | Fixed Maturities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value fixed maturities measured on recurring basis	11,697,691
Collateralized Debt Obligations [Member] | Fixed Maturities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value fixed maturities measured on recurring basis	73,668
Other Asset-backed Securities [Member] | Fixed Maturities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value fixed maturities measured on recurring basis	20,632
Redeemable Preferred Stocks [Member] | Fixed Maturities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value fixed maturities measured on recurring basis	521,469
Fair Value, Inputs, Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total fixed maturities and equity securities	$ 41,112
Percent of total	0.30%
Fair Value, Inputs, Level 1 [Member] | Fixed Maturities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value fixed maturities measured on recurring basis	$ 40,400
Fair Value, Inputs, Level 1 [Member] | Equity Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	712
Fair Value, Inputs, Level 1 [Member] | U.S. Government Direct, Guaranteed, and Government-Sponsored Enterprises [Member] | Fixed Maturities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value fixed maturities measured on recurring basis	0
Fair Value, Inputs, Level 1 [Member] | States, Municipalities, and Political Subdivisions [Member] | Fixed Maturities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value fixed maturities measured on recurring basis	0
Fair Value, Inputs, Level 1 [Member] | Foreign Governments [Member] | Fixed Maturities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value fixed maturities measured on recurring basis	0
Fair Value, Inputs, Level 1 [Member] | Corporates [Member] | Fixed Maturities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value fixed maturities measured on recurring basis	25,174
Fair Value, Inputs, Level 1 [Member] | Collateralized Debt Obligations [Member] | Fixed Maturities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value fixed maturities measured on recurring basis	0
Fair Value, Inputs, Level 1 [Member] | Other Asset-backed Securities [Member] | Fixed Maturities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value fixed maturities measured on recurring basis	0
Fair Value, Inputs, Level 1 [Member] | Redeemable Preferred Stocks [Member] | Fixed Maturities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value fixed maturities measured on recurring basis	15,226
Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total fixed maturities and equity securities	$ 13,485,365
Percent of total	95.50%
Fair Value, Inputs, Level 2 [Member] | Fixed Maturities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value fixed maturities measured on recurring basis	$ 13,485,365
Fair Value, Inputs, Level 2 [Member] | Equity Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	0
Fair Value, Inputs, Level 2 [Member] | U.S. Government Direct, Guaranteed, and Government-Sponsored Enterprises [Member] | Fixed Maturities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value fixed maturities measured on recurring basis	354,556
Fair Value, Inputs, Level 2 [Member] | States, Municipalities, and Political Subdivisions [Member] | Fixed Maturities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value fixed maturities measured on recurring basis	1,429,363
Fair Value, Inputs, Level 2 [Member] | Foreign Governments [Member] | Fixed Maturities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value fixed maturities measured on recurring basis	24,083
Fair Value, Inputs, Level 2 [Member] | Corporates [Member] | Fixed Maturities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value fixed maturities measured on recurring basis	11,150,488
Fair Value, Inputs, Level 2 [Member] | Collateralized Debt Obligations [Member] | Fixed Maturities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value fixed maturities measured on recurring basis	0
Fair Value, Inputs, Level 2 [Member] | Other Asset-backed Securities [Member] | Fixed Maturities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value fixed maturities measured on recurring basis	20,632
Fair Value, Inputs, Level 2 [Member] | Redeemable Preferred Stocks [Member] | Fixed Maturities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value fixed maturities measured on recurring basis	506,243
Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total fixed maturities and equity securities	$ 596,530
Percent of total	4.20%
Fair Value, Inputs, Level 3 [Member] | Fixed Maturities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value fixed maturities measured on recurring basis	$ 595,697
Fair Value, Inputs, Level 3 [Member] | Equity Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	833
Fair Value, Inputs, Level 3 [Member] | U.S. Government Direct, Guaranteed, and Government-Sponsored Enterprises [Member] | Fixed Maturities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value fixed maturities measured on recurring basis	0
Fair Value, Inputs, Level 3 [Member] | States, Municipalities, and Political Subdivisions [Member] | Fixed Maturities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value fixed maturities measured on recurring basis	0
Fair Value, Inputs, Level 3 [Member] | Foreign Governments [Member] | Fixed Maturities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value fixed maturities measured on recurring basis	0
Fair Value, Inputs, Level 3 [Member] | Corporates [Member] | Fixed Maturities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value fixed maturities measured on recurring basis	522,029
Fair Value, Inputs, Level 3 [Member] | Collateralized Debt Obligations [Member] | Fixed Maturities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value fixed maturities measured on recurring basis	73,668
Fair Value, Inputs, Level 3 [Member] | Other Asset-backed Securities [Member] | Fixed Maturities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value fixed maturities measured on recurring basis	0
Fair Value, Inputs, Level 3 [Member] | Redeemable Preferred Stocks [Member] | Fixed Maturities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value fixed maturities measured on recurring basis	0
Financial [Member] | Corporates [Member] | Fixed Maturities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value fixed maturities measured on recurring basis	2,952,069
Financial [Member] | Redeemable Preferred Stocks [Member] | Fixed Maturities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value fixed maturities measured on recurring basis	492,074
Financial [Member] | Fair Value, Inputs, Level 1 [Member] | Corporates [Member] | Fixed Maturities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value fixed maturities measured on recurring basis	0
Financial [Member] | Fair Value, Inputs, Level 1 [Member] | Redeemable Preferred Stocks [Member] | Fixed Maturities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value fixed maturities measured on recurring basis	15,226
Financial [Member] | Fair Value, Inputs, Level 2 [Member] | Corporates [Member] | Fixed Maturities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value fixed maturities measured on recurring basis	2,883,531
Financial [Member] | Fair Value, Inputs, Level 2 [Member] | Redeemable Preferred Stocks [Member] | Fixed Maturities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value fixed maturities measured on recurring basis	476,848
Financial [Member] | Fair Value, Inputs, Level 3 [Member] | Corporates [Member] | Fixed Maturities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value fixed maturities measured on recurring basis	68,538
Financial [Member] | Fair Value, Inputs, Level 3 [Member] | Redeemable Preferred Stocks [Member] | Fixed Maturities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value fixed maturities measured on recurring basis	0
Utilities [Member] | Corporates [Member] | Fixed Maturities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value fixed maturities measured on recurring basis	2,369,965
Utilities [Member] | Redeemable Preferred Stocks [Member] | Fixed Maturities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value fixed maturities measured on recurring basis	29,395
Utilities [Member] | Fair Value, Inputs, Level 1 [Member] | Corporates [Member] | Fixed Maturities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value fixed maturities measured on recurring basis	25,174
Utilities [Member] | Fair Value, Inputs, Level 1 [Member] | Redeemable Preferred Stocks [Member] | Fixed Maturities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value fixed maturities measured on recurring basis	0
Utilities [Member] | Fair Value, Inputs, Level 2 [Member] | Corporates [Member] | Fixed Maturities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value fixed maturities measured on recurring basis	2,209,586
Utilities [Member] | Fair Value, Inputs, Level 2 [Member] | Redeemable Preferred Stocks [Member] | Fixed Maturities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value fixed maturities measured on recurring basis	29,395
Utilities [Member] | Fair Value, Inputs, Level 3 [Member] | Corporates [Member] | Fixed Maturities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value fixed maturities measured on recurring basis	135,205
Utilities [Member] | Fair Value, Inputs, Level 3 [Member] | Redeemable Preferred Stocks [Member] | Fixed Maturities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value fixed maturities measured on recurring basis	0
Energy [Member] | Corporates [Member] | Fixed Maturities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value fixed maturities measured on recurring basis	1,610,631
Energy [Member] | Fair Value, Inputs, Level 1 [Member] | Corporates [Member] | Fixed Maturities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value fixed maturities measured on recurring basis	0
Energy [Member] | Fair Value, Inputs, Level 2 [Member] | Corporates [Member] | Fixed Maturities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value fixed maturities measured on recurring basis	1,583,301
Energy [Member] | Fair Value, Inputs, Level 3 [Member] | Corporates [Member] | Fixed Maturities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value fixed maturities measured on recurring basis	27,330
Other Corporate Sectors [Member] | Corporates [Member] | Fixed Maturities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value fixed maturities measured on recurring basis	4,765,026
Other Corporate Sectors [Member] | Fair Value, Inputs, Level 1 [Member] | Corporates [Member] | Fixed Maturities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value fixed maturities measured on recurring basis	0
Other Corporate Sectors [Member] | Fair Value, Inputs, Level 2 [Member] | Corporates [Member] | Fixed Maturities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value fixed maturities measured on recurring basis	4,474,070
Other Corporate Sectors [Member] | Fair Value, Inputs, Level 3 [Member] | Corporates [Member] | Fixed Maturities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value fixed maturities measured on recurring basis	$ 290,956

Investments - Schedule of Chang

Investments - Schedule of Changes in Assets Measured at Fair Value on a Recurring Basis Using Significant Unobservable Inputs (Level 3) (Detail) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Investment [Line Items]
Beginning Balance	$ 576,779	$ 359,281
Included in realized gains/losses	0	15,925
Included in other comprehensive income	5,105	28,272
Acquisitions	19,400	90,680
Sales		(16,050)
Amortization	2,817	2,673
Other	(7,571)	(4,396)
Transfers in and/or out of Level 3	0	0
Ending Balance	$ 596,530	$ 476,385
Percent of total fixed maturity and equity securities	4.20%	3.40%
Collateralized Debt Obligations [Member]
Investment [Line Items]
Beginning Balance	$ 63,232	$ 58,205
Included in realized gains/losses	0	15,924
Included in other comprehensive income	13,531	8,702
Acquisitions	0	0
Sales		(16,049)
Amortization	2,810	2,668
Other	(5,905)	(3,231)
Transfers in and/or out of Level 3	0	0
Ending Balance	$ 73,668	$ 66,219
Percent of total fixed maturity and equity securities	0.50%	0.50%
Corporates [Member]
Investment [Line Items]
Beginning Balance	$ 512,714	$ 300,300
Included in realized gains/losses	0	1
Included in other comprehensive income	(8,426)	19,513
Acquisitions	19,400	90,680
Sales		(1)
Amortization	7	5
Other	(1,666)	(1,165)
Transfers in and/or out of Level 3	0	0
Ending Balance	$ 522,029	$ 409,333
Percent of total fixed maturity and equity securities	3.70%	2.90%
Equity Securities [Member]
Investment [Line Items]
Beginning Balance	$ 833	$ 776
Included in realized gains/losses	0	0
Included in other comprehensive income	0	57
Acquisitions	0	0
Sales		0
Amortization	0	0
Other	0	0
Transfers in and/or out of Level 3	0	0
Ending Balance	$ 833	$ 833
Percent of total fixed maturity and equity securities	0.00%	0.00%

Investments - Additional Inform

Investments - Additional Information (Detail) - Issue	Jun. 30, 2015	Dec. 31, 2014
Investments, Debt and Equity Securities [Abstract]
Total issues of fixed-maturities and equities	1,580	1,604

Investments - Schedule of Addit

Investments - Schedule of Additional Information about Investments in Unrealized Loss Position (Detail) - Issue	Jun. 30, 2015	Dec. 31, 2014
Number of issues (Cusip numbers) held:
Less than Twelve Months	407	80
Twelve Months or Longer	61	173
Number of issues (Cusip numbers) held, Total	468	253

Investments - Schedule of Unrea

Investments - Schedule of Unrealized Investment Losses by Class of Investment (Detail) $ in Thousands	Jun. 30, 2015USD ($)
Schedule of Available-for-sale Securities [Line Items]
Fair Value, Less than Twelve Months	$ 3,196,745
Fair Value, Twelve Months or Longer	333,960
Fair Value, Total	3,530,705
Unrealized Loss Less Than Twelve Months	(197,544)
Unrealized Loss Twelve Months or Longer	(58,760)
Unrealized Loss Total	(256,304)
Fixed Maturities [Member]
Schedule of Available-for-sale Securities [Line Items]
Fair Value, Less than Twelve Months	3,196,745
Fair Value, Twelve Months or Longer	333,960
Fair Value, Total	3,530,705
Unrealized Loss Less Than Twelve Months	(197,544)
Unrealized Loss Twelve Months or Longer	(58,760)
Unrealized Loss Total	(256,304)
Equity Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Fair Value, Less than Twelve Months	0
Fair Value, Twelve Months or Longer	0
Fair Value, Total	0
Unrealized Loss Less Than Twelve Months	0
Unrealized Loss Twelve Months or Longer	0
Unrealized Loss Total	0
External Credit Rating, Investment Grade [Member] | Fixed Maturities [Member]
Schedule of Available-for-sale Securities [Line Items]
Fair Value, Less than Twelve Months	3,125,203
Fair Value, Twelve Months or Longer	123,538
Fair Value, Total	3,248,741
Unrealized Loss Less Than Twelve Months	(190,627)
Unrealized Loss Twelve Months or Longer	(18,101)
Unrealized Loss Total	(208,728)
External Credit Rating, Investment Grade [Member] | U.S. Government Direct, Guaranteed, and Government-Sponsored Enterprises [Member] | Fixed Maturities [Member]
Schedule of Available-for-sale Securities [Line Items]
Fair Value, Less than Twelve Months	305,538
Fair Value, Twelve Months or Longer	14,642
Fair Value, Total	320,180
Unrealized Loss Less Than Twelve Months	(16,522)
Unrealized Loss Twelve Months or Longer	(900)
Unrealized Loss Total	(17,422)
External Credit Rating, Investment Grade [Member] | States, Municipalities, and Political Subdivisions [Member] | Fixed Maturities [Member]
Schedule of Available-for-sale Securities [Line Items]
Fair Value, Less than Twelve Months	79,844
Fair Value, Twelve Months or Longer	1,687
Fair Value, Total	81,531
Unrealized Loss Less Than Twelve Months	(1,803)
Unrealized Loss Twelve Months or Longer	(112)
Unrealized Loss Total	(1,915)
External Credit Rating, Investment Grade [Member] | Foreign Governments [Member] | Fixed Maturities [Member]
Schedule of Available-for-sale Securities [Line Items]
Fair Value, Less than Twelve Months	4,134
Fair Value, Twelve Months or Longer	0
Fair Value, Total	4,134
Unrealized Loss Less Than Twelve Months	(379)
Unrealized Loss Twelve Months or Longer	0
Unrealized Loss Total	(379)
External Credit Rating, Investment Grade [Member] | Corporates [Member] | Fixed Maturities [Member]
Schedule of Available-for-sale Securities [Line Items]
Fair Value, Less than Twelve Months	2,735,687
Fair Value, Twelve Months or Longer	105,564
Fair Value, Total	2,841,251
Unrealized Loss Less Than Twelve Months	(171,923)
Unrealized Loss Twelve Months or Longer	(17,067)
Unrealized Loss Total	(188,990)
External Credit Rating, Investment Grade [Member] | Redeemable Preferred Stocks [Member] | Fixed Maturities [Member]
Schedule of Available-for-sale Securities [Line Items]
Fair Value, Less than Twelve Months	0
Fair Value, Twelve Months or Longer	1,645
Fair Value, Total	1,645
Unrealized Loss Less Than Twelve Months	0
Unrealized Loss Twelve Months or Longer	(22)
Unrealized Loss Total	(22)
External Credit Rating, Investment Grade [Member] | Financial [Member] | Corporates [Member] | Fixed Maturities [Member]
Schedule of Available-for-sale Securities [Line Items]
Fair Value, Less than Twelve Months	334,577
Fair Value, Twelve Months or Longer	0
Fair Value, Total	334,577
Unrealized Loss Less Than Twelve Months	(17,515)
Unrealized Loss Twelve Months or Longer	0
Unrealized Loss Total	(17,515)
External Credit Rating, Investment Grade [Member] | Utilities [Member] | Corporates [Member] | Fixed Maturities [Member]
Schedule of Available-for-sale Securities [Line Items]
Fair Value, Less than Twelve Months	498,821
Fair Value, Twelve Months or Longer	0
Fair Value, Total	498,821
Unrealized Loss Less Than Twelve Months	(27,006)
Unrealized Loss Twelve Months or Longer	0
Unrealized Loss Total	(27,006)
External Credit Rating, Investment Grade [Member] | Utilities [Member] | Redeemable Preferred Stocks [Member] | Fixed Maturities [Member]
Schedule of Available-for-sale Securities [Line Items]
Fair Value, Less than Twelve Months	0
Fair Value, Twelve Months or Longer	1,645
Fair Value, Total	1,645
Unrealized Loss Less Than Twelve Months	0
Unrealized Loss Twelve Months or Longer	(22)
Unrealized Loss Total	(22)
External Credit Rating, Investment Grade [Member] | Energy [Member] | Corporates [Member] | Fixed Maturities [Member]
Schedule of Available-for-sale Securities [Line Items]
Fair Value, Less than Twelve Months	372,105
Fair Value, Twelve Months or Longer	59,712
Fair Value, Total	431,817
Unrealized Loss Less Than Twelve Months	(30,440)
Unrealized Loss Twelve Months or Longer	(9,727)
Unrealized Loss Total	(40,167)
External Credit Rating, Investment Grade [Member] | Other Corporate Sectors [Member] | Corporates [Member] | Fixed Maturities [Member]
Schedule of Available-for-sale Securities [Line Items]
Fair Value, Less than Twelve Months	1,530,184
Fair Value, Twelve Months or Longer	45,852
Fair Value, Total	1,576,036
Unrealized Loss Less Than Twelve Months	(96,962)
Unrealized Loss Twelve Months or Longer	(7,340)
Unrealized Loss Total	(104,302)
External Credit Rating, Non Investment Grade [Member] | Fixed Maturities [Member]
Schedule of Available-for-sale Securities [Line Items]
Fair Value, Less than Twelve Months	71,542
Fair Value, Twelve Months or Longer	210,422
Fair Value, Total	281,964
Unrealized Loss Less Than Twelve Months	(6,917)
Unrealized Loss Twelve Months or Longer	(40,659)
Unrealized Loss Total	(47,576)
External Credit Rating, Non Investment Grade [Member] | States, Municipalities, and Political Subdivisions [Member] | Fixed Maturities [Member]
Schedule of Available-for-sale Securities [Line Items]
Fair Value, Less than Twelve Months	0
Fair Value, Twelve Months or Longer	319
Fair Value, Total	319
Unrealized Loss Less Than Twelve Months	0
Unrealized Loss Twelve Months or Longer	(236)
Unrealized Loss Total	(236)
External Credit Rating, Non Investment Grade [Member] | Corporates [Member] | Fixed Maturities [Member]
Schedule of Available-for-sale Securities [Line Items]
Fair Value, Less than Twelve Months	71,542
Fair Value, Twelve Months or Longer	142,160
Fair Value, Total	213,702
Unrealized Loss Less Than Twelve Months	(6,917)
Unrealized Loss Twelve Months or Longer	(26,030)
Unrealized Loss Total	(32,947)
External Credit Rating, Non Investment Grade [Member] | Collateralized Debt Obligations [Member] | Fixed Maturities [Member]
Schedule of Available-for-sale Securities [Line Items]
Fair Value, Less than Twelve Months	0
Fair Value, Twelve Months or Longer	12,361
Fair Value, Total	12,361
Unrealized Loss Less Than Twelve Months	0
Unrealized Loss Twelve Months or Longer	(7,639)
Unrealized Loss Total	(7,639)
External Credit Rating, Non Investment Grade [Member] | Redeemable Preferred Stocks [Member] | Fixed Maturities [Member]
Schedule of Available-for-sale Securities [Line Items]
Fair Value, Less than Twelve Months	0
Fair Value, Twelve Months or Longer	55,582
Fair Value, Total	55,582
Unrealized Loss Less Than Twelve Months	0
Unrealized Loss Twelve Months or Longer	(6,754)
Unrealized Loss Total	(6,754)
External Credit Rating, Non Investment Grade [Member] | Financial [Member] | Corporates [Member] | Fixed Maturities [Member]
Schedule of Available-for-sale Securities [Line Items]
Fair Value, Less than Twelve Months	0
Fair Value, Twelve Months or Longer	84,947
Fair Value, Total	84,947
Unrealized Loss Less Than Twelve Months	0
Unrealized Loss Twelve Months or Longer	(20,851)
Unrealized Loss Total	(20,851)
External Credit Rating, Non Investment Grade [Member] | Financial [Member] | Redeemable Preferred Stocks [Member] | Fixed Maturities [Member]
Schedule of Available-for-sale Securities [Line Items]
Fair Value, Less than Twelve Months	0
Fair Value, Twelve Months or Longer	55,582
Fair Value, Total	55,582
Unrealized Loss Less Than Twelve Months	0
Unrealized Loss Twelve Months or Longer	(6,754)
Unrealized Loss Total	(6,754)
External Credit Rating, Non Investment Grade [Member] | Energy [Member] | Corporates [Member] | Fixed Maturities [Member]
Schedule of Available-for-sale Securities [Line Items]
Fair Value, Less than Twelve Months	55,653
Fair Value, Twelve Months or Longer	0
Fair Value, Total	55,653
Unrealized Loss Less Than Twelve Months	(6,094)
Unrealized Loss Twelve Months or Longer	0
Unrealized Loss Total	(6,094)
External Credit Rating, Non Investment Grade [Member] | Other Corporate Sectors [Member] | Corporates [Member] | Fixed Maturities [Member]
Schedule of Available-for-sale Securities [Line Items]
Fair Value, Less than Twelve Months	15,889
Fair Value, Twelve Months or Longer	57,213
Fair Value, Total	73,102
Unrealized Loss Less Than Twelve Months	(823)
Unrealized Loss Twelve Months or Longer	(5,179)
Unrealized Loss Total	$ (6,002)

Supplemental Information abou33

Supplemental Information about Changes to Accumulated Other Comprehensive Income - Schedule of Change in Balance by Component of Accumulated Other Comprehensive Income (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Accumulated Other Comprehensive Income, Net of Tax [Roll Forward]
Accumulated other comprehensive income (loss), Beginning Balance	$ 1,165,641	$ 606,058	$ 997,452	$ 210,981
Other comprehensive income (loss) before reclassifications, net of tax	(610,696)	282,124	(443,708)	687,777
Reclassifications, net of tax	374	(208)	1,575	(10,784)
Other comprehensive income (loss)	(610,322)	281,916	(442,133)	676,993
Accumulated other comprehensive income (loss), Ending Balance	555,319	887,974	555,319	887,974
Available for Sale Assets [Member]
Accumulated Other Comprehensive Income, Net of Tax [Roll Forward]
Accumulated other comprehensive income (loss), Beginning Balance	1,261,518	653,086	1,090,273	256,196
Other comprehensive income (loss) before reclassifications, net of tax	(609,544)	281,810	(437,135)	690,949
Reclassifications, net of tax	(2,001)	(1,881)	(3,165)	(14,130)
Other comprehensive income (loss)	(611,545)	279,929	(440,300)	676,819
Accumulated other comprehensive income (loss), Ending Balance	649,973	933,015	649,973	933,015
Deferred Acquisition Costs [Member]
Accumulated Other Comprehensive Income, Net of Tax [Roll Forward]
Accumulated other comprehensive income (loss), Beginning Balance	(10,334)	(9,476)	(10,758)	(6,728)
Other comprehensive income (loss) before reclassifications, net of tax	1,919	(1,979)	2,343	(4,727)
Reclassifications, net of tax	0	0	0	0
Other comprehensive income (loss)	1,919	(1,979)	2,343	(4,727)
Accumulated other comprehensive income (loss), Ending Balance	(8,415)	(11,455)	(8,415)	(11,455)
Foreign Exchange [Member]
Accumulated Other Comprehensive Income, Net of Tax [Roll Forward]
Accumulated other comprehensive income (loss), Beginning Balance	11,424	24,128	17,386	24,866
Other comprehensive income (loss) before reclassifications, net of tax	(3,071)	1,996	(9,033)	1,258
Reclassifications, net of tax	0	0	0	0
Other comprehensive income (loss)	(3,071)	1,996	(9,033)	1,258
Accumulated other comprehensive income (loss), Ending Balance	8,353	26,124	8,353	26,124
Pension adjustments [Member]
Accumulated Other Comprehensive Income, Net of Tax [Roll Forward]
Accumulated other comprehensive income (loss), Beginning Balance	(96,967)	(61,680)	(99,449)	(63,353)
Other comprehensive income (loss) before reclassifications, net of tax	0	297	117	297
Reclassifications, net of tax	2,375	1,673	4,740	3,346
Other comprehensive income (loss)	2,375	1,970	4,857	3,643
Accumulated other comprehensive income (loss), Ending Balance	$ (94,592)	$ (59,710)	$ (94,592)	$ (59,710)

Supplemental Information abou34

Supplemental Information about Changes to Accumulated Other Comprehensive Income - Summary of Reclassification out of Accumulated Other Comprehensive Income (Detail) - USD ($) $ in Thousands	3 Months Ended			6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014		Jun. 30, 2015	Jun. 30, 2014
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Realized (gains) losses	$ (2,613)	$ (577)	[1]	$ (2,732)	$ (17,196)	[1]
Amortization of (discount) premium	(194,823)	(189,930)	[1]	(386,419)	(377,981)	[1]
Income taxes	61,278	62,888	[1]	120,062	127,570	[1]
Net income	(127,110)	(130,923)		(248,758)	(263,779)	[1]
Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Net income	374	(208)		1,575	(10,784)
Reclassification out of Accumulated Other Comprehensive Income [Member] | Accumulated Net Investment Gain (Loss) Attributable to Parent [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Realized (gains) losses	(1,479)	(577)		(1,598)	(17,196)
Amortization of (discount) premium	(1,599)	(2,317)		(3,271)	(4,544)
Total before tax	(3,078)	(2,894)		(4,869)	(21,740)
Income taxes	1,077	1,013		1,704	7,610
Net income	(2,001)	(1,881)		(3,165)	(14,130)
Reclassification out of Accumulated Other Comprehensive Income [Member] | Pension adjustments [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Amortization of prior service cost	82	528		163	1,056
Amortization of actuarial gain (loss)	3,571	2,046		7,128	4,092
Total before tax	3,653	2,574		7,291	5,148
Income taxes	(1,278)	(901)		(2,551)	(1,802)
Net income	$ 2,375	$ 1,673		$ 4,740	$ 3,346
[1]	Certain balances were retrospectively adjusted to give effect to the adoption of new accounting guidance as described in Note G- Adoption of New Accounting Standards

Business Segments - Adjustments

Business Segments - Adjustments for Difference in Interim Medicare Part D Results for Segment Purposes and GAAP (Detail) - USD ($) $ in Thousands	3 Months Ended			6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	[1]	Jun. 30, 2015	Jun. 30, 2014
Segment Reporting Disclosure [Line Items]
Benefit costs deferred	$ 592,293	$ 555,207		$ 1,184,190	$ 1,141,724	[1]
Government risk-sharing premium adjustment	$ (835,567)	$ (799,866)		(1,665,715)	(1,618,886)	[1]
Pre-tax addition to segment interim period income				30,865	25,768
After tax amount				20,062	16,749
Medicare Part D [Member]
Segment Reporting Disclosure [Line Items]
After tax amount				20,062	16,749
Adjustments [Member]
Segment Reporting Disclosure [Line Items]
Benefit costs deferred					63,956
Government risk-sharing premium adjustment				(16,470)	(35,131)
Adjustments [Member] | Medicare Part D [Member]
Segment Reporting Disclosure [Line Items]
Benefit costs deferred				47,335	60,899
Government risk-sharing premium adjustment				(16,470)	(35,131)
Pre-tax addition to segment interim period income				$ 30,865	$ 25,768
[1]	Certain balances were retrospectively adjusted to give effect to the adoption of new accounting guidance as described in Note G- Adoption of New Accounting Standards

Business Segments - Reconciliat

Business Segments - Reconciliation of Health Premium Included in the segment Analysis (Detail) - USD ($) $ in Thousands	3 Months Ended			6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	[1]	Jun. 30, 2015	Jun. 30, 2014
Segment Reporting Information [Line Items]
Health premium	$ 315,492	$ 307,791		$ 632,257	$ 637,654	[1]
Health premium earned per segment, Change %				(1.00%)
Medicare Part D [Member]
Segment Reporting Information [Line Items]
Health premium				$ 154,705	167,990
Health premium earned per segment, Change %				(8.00%)
Other Health [Member]
Segment Reporting Information [Line Items]
Health premium				$ 461,082	434,533
Health premium earned per segment, Change %				6.00%
Part D risk sharing adjustment [Member]
Segment Reporting Information [Line Items]
Health premium				$ 16,470	$ 35,131
Health premium earned per segment, Change %				(53.00%)
[1]	Certain balances were retrospectively adjusted to give effect to the adoption of new accounting guidance as described in Note G- Adoption of New Accounting Standards

Business Segments - Additional

Business Segments - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Segment Reporting Disclosure [Line Items]
Litigation settlement amount related to insurance operations			$ 2,337
Administrative settlement expense	$ 3,100		3,057
Administrative settlement, after tax	$ 2,000	$ 0	1,987
Settled Litigation Regarding Investments [Member]
Segment Reporting Disclosure [Line Items]
Litigation settlement expense, after tax			853
Litigation settlement amount related to investments			1,300
Settled Litigation Regarding Non-Insurance Matter [Member]
Segment Reporting Disclosure [Line Items]
Litigation settlement amount related to insurance operations			3,700
Prior Year Litigation Matter [Member]
Segment Reporting Disclosure [Line Items]
Litigation settlement expense, after tax			$ 2,400

Business Segments - Reconcili38

Business Segments - Reconciliation of Segment Operating Information to Consolidated Statement of Operations (Detail) - USD ($) $ in Thousands	3 Months Ended			6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014		Jun. 30, 2015	Jun. 30, 2014
Revenue:
Premium	$ 835,567	$ 799,866	[1]	$ 1,665,715	$ 1,618,886	[1]
Net investment income	194,823	189,930	[1]	386,419	377,981	[1]
Other income	691	663	[1]	1,360	1,144	[1]
Total revenue				2,053,494	1,998,011
Expenses:
Policy benefits	592,293	555,207	[1]	1,184,190	1,141,724	[1]
Policy reserves				0	0
Deferred acquisition costs				0	0
Amortization of acquisition costs	112,904	104,561	[1]	224,167	209,294	[1]
Commissions, premium taxes, and non-deferred acquisition costs	64,018	62,020	[1]	127,286	121,398	[1]
Insurance administrative expense				94,063	91,910
Parent expense				4,485	4,045
Stock compensation expense				15,041	17,401
Interest expense	19,114	19,037	[1]	38,174	38,086	[1]
Total benefits and expenses	845,306	797,225	[1]	1,687,406	1,623,858	[1]
Subtotal				366,088	374,153
Nonoperating items				30,865	31,162
Measure of segment profitability (pretax)				396,953	405,315
Deduct applicable income taxes				(129,909)	(132,458)
Net operating income				267,044	272,857
Add (deduct) realized investment gains (losses)				2,732	17,196
Deduct Part D adjustment				(30,865)	(25,768)
Deduct legal settlement expenses					(2,337)
Deduct administrative settlements		(3,100)			(3,057)
Income before income taxes	$ 188,388	$ 193,811	[1]	368,820	391,349	[1]
Operating Segments [Member] | Life Insurance [Member]
Revenue:
Premium				1,033,380	981,010
Total revenue				1,033,380	981,010
Expenses:
Policy benefits				687,065	641,311
Policy reserves				(273,615)	(262,328)
Deferred acquisition costs				85,985	83,633
Amortization of acquisition costs				177,265	167,991
Commissions, premium taxes, and non-deferred acquisition costs				75,900	69,068
Total benefits and expenses				752,600	699,675
Subtotal				280,780	281,335
Measure of segment profitability (pretax)				280,780	281,335
Operating Segments [Member] | Health Insurance [Member]
Revenue:
Premium				461,082	434,533
Total revenue				461,082	434,533
Expenses:
Policy benefits				299,227	280,140
Policy reserves				(34,034)	(31,758)
Deferred acquisition costs				11,358	11,223
Amortization of acquisition costs				40,924	36,072
Commissions, premium taxes, and non-deferred acquisition costs				40,418	39,611
Total benefits and expenses				357,893	335,288
Subtotal				103,189	99,245
Measure of segment profitability (pretax)				103,189	99,245
Operating Segments [Member] | Medicare Part D [Member]
Revenue:
Premium				154,705	167,990
Total revenue				154,705	167,990
Expenses:
Policy benefits				$ 130,764	$ 135,233
Policy reserves
Deferred acquisition costs				$ 446	$ 354
Amortization of acquisition costs				1,769	1,377
Commissions, premium taxes, and non-deferred acquisition costs				11,049	12,815
Total benefits and expenses				144,028	149,779
Subtotal				10,677	18,211
Measure of segment profitability (pretax)				10,677	18,211
Operating Segments [Member] | Annuity [Member]
Revenue:
Premium				78	222
Total revenue				78	222
Expenses:
Policy benefits				19,799	21,084
Policy reserves				(26,756)	(27,616)
Deferred acquisition costs				607	764
Amortization of acquisition costs				4,209	3,854
Commissions, premium taxes, and non-deferred acquisition costs				23	26
Total benefits and expenses				(2,118)	(1,888)
Subtotal				2,196	2,110
Measure of segment profitability (pretax)				2,196	2,110
Operating Segments [Member] | Investment [Member]
Revenue:
Net investment income				386,419	377,981
Total revenue				386,419	377,981
Expenses:
Policy reserves				334,405	321,702
Deferred acquisition costs				(98,396)	(95,974)
Interest expense				38,174	38,086
Total benefits and expenses				274,183	263,814
Subtotal				112,236	114,167
Measure of segment profitability (pretax)				112,236	114,167
Operating Segments [Member] | Other and Corporate [Member]
Revenue:
Other income				1,464	1,266
Total revenue				1,464	1,266
Expenses:
Insurance administrative expense				94,063	89,573
Parent expense				4,485	4,045
Stock compensation expense				15,041	17,401
Total benefits and expenses				113,589	111,019
Subtotal				(112,125)	(109,753)
Measure of segment profitability (pretax)				(112,125)	(109,753)
Adjustments [Member]
Revenue:
Premium				$ 16,470	$ 35,131
Net investment income
Other income				$ (104)	$ (122)
Total revenue				16,366	35,009
Expenses:
Policy benefits					$ 63,956
Amortization of acquisition costs
Commissions, premium taxes, and non-deferred acquisition costs				$ (104)	$ (122)
Insurance administrative expense					$ 2,337
Parent expense
Total benefits and expenses				$ 47,231	$ 66,171
Subtotal				(30,865)	(31,162)
Nonoperating items				30,865	31,162
Measure of segment profitability (pretax)				0	0
Adjustments [Member] | Medicare Part D [Member]
Revenue:
Premium				16,470	35,131
Expenses:
Policy benefits				47,335	60,899
Deduct Part D adjustment				$ (30,865)	$ (25,768)
[1]	Certain balances were retrospectively adjusted to give effect to the adoption of new accounting guidance as described in Note G- Adoption of New Accounting Standards

Business Segments - Analysis of

Business Segments - Analysis of Profitability by Segment (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Segment Reporting Information [Line Items]
Pretax operating income			$ 396,953	$ 405,315
Applicable taxes			(129,909)	(132,458)
Net operating income			267,044	272,857
Realized gains (losses)-Investments			1,776	11,177
Part D adjustment			(20,062)	(16,749)
Administrative settlements		$ (2,000)	0	(1,987)
Legal settlement expense			0	(1,519)
Net income	$ 127,110	$ 130,923	248,758	263,779	[1]
Pretax operating income, Change			(8,362)
Applicable taxes, Increase (Decrease)			2,549
Net income, Decrease			(5,813)
Realized gains (losses) - Investments net of tax, Increase (Decrease)			(9,401)
Part D adjustment net of tax, Increase (Decrease)			(3,313)
Administrative settlements, Increase (Decrease)			1,987
Legal settlement expenses net of tax, Increase (Decrease)			1,519
Net income, Increase (Decrease)			$ (15,021)
Pretax operating income, Increase (Decrease) %			(2.00%)
Applicable taxes, Change %			(2.00%)
Net operating income, Change %			(2.00%)
Net income, Change %			(6.00%)
Medicare Part D [Member]
Segment Reporting Information [Line Items]
Part D adjustment			$ (20,062)	(16,749)
Operating Segments [Member] | Life Insurance [Member]
Segment Reporting Information [Line Items]
Pretax operating income			280,780	281,335
Pretax operating income, Change			$ (555)
Pretax operating income, Increase (Decrease) %			0.00%
Operating Segments [Member] | Health Insurance [Member]
Segment Reporting Information [Line Items]
Pretax operating income			$ 103,189	99,245
Pretax operating income, Change			$ 3,944
Pretax operating income, Increase (Decrease) %			4.00%
Operating Segments [Member] | Medicare Part D [Member]
Segment Reporting Information [Line Items]
Pretax operating income			$ 10,677	18,211
Pretax operating income, Change			$ (7,534)
Pretax operating income, Increase (Decrease) %			(41.00%)
Operating Segments [Member] | Annuity [Member]
Segment Reporting Information [Line Items]
Pretax operating income			$ 2,196	2,110
Pretax operating income, Change			$ 86
Pretax operating income, Increase (Decrease) %			4.00%
Operating Segments [Member] | Investment [Member]
Segment Reporting Information [Line Items]
Pretax operating income			$ 112,236	114,167
Pretax operating income, Change			$ (1,931)
Pretax operating income, Increase (Decrease) %			(2.00%)
Operating Segments [Member] | Other and Corporate [Member]
Segment Reporting Information [Line Items]
Pretax operating income			$ (112,125)	(109,753)
Operating Segments [Member] | Other and Corporate [Member] | Other Income [Member]
Segment Reporting Information [Line Items]
Pretax operating income			1,464	1,266
Pretax operating income, Change			$ 198
Pretax operating income, Increase (Decrease) %			16.00%
Operating Segments [Member] | Other and Corporate [Member] | Administrative Expense [Member]
Segment Reporting Information [Line Items]
Pretax operating income			$ (94,063)	(89,573)
Pretax operating income, Change			$ (4,490)
Pretax operating income, Increase (Decrease) %			5.00%
Operating Segments [Member] | Other and Corporate [Member] | Corporate [Member]
Segment Reporting Information [Line Items]
Pretax operating income			$ (19,526)	$ (21,446)
Pretax operating income, Change			$ 1,920
Pretax operating income, Increase (Decrease) %			(9.00%)
[1]	Certain balances were retrospectively adjusted to give effect to the adoption of new accounting guidance as described in Note G- Adoption of New Accounting Standards

Adoption of New Accounting St40

Adoption of New Accounting Standards (Details) - USD ($) $ in Thousands	3 Months Ended			6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014		Jun. 30, 2015	Jun. 30, 2014
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Net investment income	$ 194,823	$ 189,930	[1]	$ 386,419	$ 377,981	[1]
Total revenue	1,033,694	991,036	[1]	2,056,226	2,015,207	[1]
Income before income taxes	188,388	193,811	[1]	368,820	391,349	[1]
Income taxes	(61,278)	(62,888)	[1]	(120,062)	(127,570)	[1]
Net income	$ 127,110	130,923		$ 248,758	263,779	[1]
As Previously Reported [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Net investment income		182,877			363,877
Total revenue		983,983			2,001,103
Income before income taxes		186,758			377,245
Income taxes		(55,835)			(113,466)
Net income		130,923			263,779
Adjustments [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Net investment income		7,053			14,104
Total revenue		7,053			14,104
Income before income taxes		7,053			14,104
Income taxes		(7,053)			(14,104)
Net income		$ 0			$ 0
[1]	Certain balances were retrospectively adjusted to give effect to the adoption of new accounting guidance as described in Note G- Adoption of New Accounting Standards