Globe Life (GL) 10-Q 6 Nov 15 2015 Q3 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	9 Months Ended
	Sep. 30, 2015	Oct. 30, 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	Sep. 30, 2015
Document Fiscal Year Focus	2,015
Document Fiscal Period Focus	Q3
Amendment Flag	false
Entity Common Stock, Shares Outstanding		123,330,265

Condensed Consolidated Balance

Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Investments:
Fixed maturities, available for sale, at fair value (amortized cost: 2015–$13,166,248; 2014–$12,823,612)	$ 14,080,199	$ 14,493,060
Equity securities, at fair value (cost: 2015–$776; 2014–$776)	1,582	1,477
Policy loans	486,042	472,109
Other long-term investments	8,662	10,449
Short-term investments	63,663	15,882
Total investments	14,640,148	14,992,977
Cash	59,485	66,019
Accrued investment income	215,919	204,879
Other receivables	676,155	543,988
Deferred acquisition costs	3,585,302	3,471,781
Goodwill	441,591	441,591
Other assets	500,640	493,495
Total assets	20,119,240	20,214,730
Liabilities:
Future policy benefits	12,117,926	11,750,495
Unearned and advance premiums	70,334	72,275
Policy claims and other benefits payable	245,706	212,137
Other policyholders’ funds	95,798	95,446
Total policy liabilities	12,529,764	12,130,353
Current and deferred income taxes payable	1,588,992	1,797,265
Other liabilities	355,428	359,118
Short-term debt	618,236	238,398
Long-term debt (fair value: 2015–$868,502; 2014–$1,148,749)	743,518	992,130
Total liabilities	15,835,938	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 10,501,488 held in treasury and 2014–134,218,183 issued, less 6,287,907 held in treasury)	134,218	134,218
Additional paid-in capital	488,318	457,613
Accumulated other comprehensive income	499,829	997,452
Retained earnings	3,686,375	3,376,846
Treasury stock, at cost	(525,438)	(268,663)
Total shareholders’ equity	4,283,302	4,697,466
Total liabilities and shareholders’ equity	$ 20,119,240	$ 20,214,730

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Statement of Financial Position [Abstract]
Fixed maturities, available for sale, amortized cost	$ 13,166,248	$ 12,823,612
Equity securities, cost	776	776
Long-term debt, fair value	$ 868,502	$ 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 (in dollars per share)	$ 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	10,501,488	6,287,907

Condensed Consolidated Statemen

Condensed Consolidated Statements of Operations (Unaudited) - USD ($) $ in Thousands	3 Months Ended			9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014		Sep. 30, 2015	Sep. 30, 2014
Revenue:
Life premium	$ 518,929	$ 491,724		$ 1,552,309	$ 1,472,734
Health premium	280,744	293,879		913,001	931,533
Other premium	41	112		119	334
Total premium	799,714	785,715		2,465,429	2,404,601
Net investment income	193,213	189,588		579,632	567,569
Realized investment gains	5,140	(1,483)		7,872	15,713
Other income	692	668		2,052	1,812
Total revenue	998,759	974,488		3,054,985	2,989,695
Benefits and expenses:
Life policyholder benefits	342,196	328,116		1,029,261	972,484
Health policyholder benefits	175,496	196,901		652,822	673,173
Other policyholder benefits	9,648	10,515		29,447	31,599
Total policyholder benefits	527,340	535,532		1,711,530	1,677,256
Amortization of deferred acquisition costs	112,523	103,834		336,690	313,128
Commissions, premium taxes, and non-deferred acquisition costs	65,127	63,636		192,413	185,034
Other operating expense	57,779	55,402		171,368	168,758
Interest expense	19,246	19,033		57,420	57,119
Total benefits and expenses	782,015	777,437		2,469,421	2,401,295
Income before income taxes	216,744	197,051		585,564	588,400
Income taxes	(71,358)	(64,639)		(191,420)	(192,209)
Net income	$ 145,386	$ 132,412		$ 394,144	$ 396,191
Basic net income per share	$ 1.17	$ 1.02	[1]	$ 3.13	$ 3.01	[1]
Diluted net income per share	1.15	1	[1]	3.09	2.97	[1]
Dividends declared per common share	$ 0.14	$ 0.13	[1]	$ 0.41	$ 0.38	[1]
[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 (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Net income	$ 145,386	$ 132,412	$ 394,144	$ 396,191
Unrealized gains (losses) on securities:
Less applicable (taxes) benefits	28,690	1,478	265,555	(362,872)
Unrealized investment gains (losses), net of tax	(52,927)	(2,702)	(493,227)	674,117
Unrealized gains (losses) attributable to deferred acquisition costs	1,436	693	5,041	(6,580)
Less applicable (taxes) benefits	(502)	(243)	(1,764)	2,303
Unrealized gains (losses) attributable to deferred acquisition costs, net of tax	934	450	3,277	(4,277)
Foreign exchange translation adjustments, other than securities	(9,031)	(6,650)	(22,567)	(4,642)
Less applicable (taxes) benefits	3,164	2,084	7,667	1,334
Foreign exchange translation adjustments, other than securities, net of tax	(5,867)	(4,566)	(14,900)	(3,308)
Pension adjustments	3,646	2,571	11,118	8,176
Less applicable (taxes) benefits	(1,276)	(900)	(3,891)	(2,862)
Pension adjustments, net of tax	2,370	1,671	7,227	5,314
Other comprehensive income (loss)	(55,490)	(5,147)	(497,623)	671,846
Comprehensive income (loss)	89,896	127,265	(103,479)	1,068,037
Securities [Member]
Unrealized gains (losses) on securities:
Unrealized holding gains (losses) arising during period	(72,228)	(2,627)	(740,934)	1,057,710
Reclassification adjustment for (gains) losses on securities included in net income	(5,540)	1,261	(7,138)	(15,935)
Reclassification adjustment for amortization of (discount) and premium	(1,569)	(2,354)	(4,840)	(6,898)
Foreign exchange adjustment on securities recorded at fair value	(1,217)	(523)	(2,480)	(654)
Unrealized gains (losses) on securities	(80,554)	(4,243)	(755,392)	1,034,223
Other Investments [Member]
Unrealized gains (losses) on securities:
Unrealized gains (losses) on other investments	(1,063)	63	(3,390)	2,766
Total unrealized investment gains (losses)	$ (81,617)	$ (4,180)	$ (758,782)	$ 1,036,989

Condensed Consolidated Stateme6

Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
Statement of Cash Flows [Abstract]
Cash provided from operations	$ 729,892	$ 644,398
Long-term investments sold or matured:
Fixed maturities available for sale—sold	26,330	56,447
Fixed maturities available for sale—matured, called, and repaid	342,796	217,929
Equity securities	0	700
Other long-term investments	2,452	70
Total long-term investments sold or matured	371,578	275,146
Long-term investments acquired:
Fixed maturities	(730,145)	(499,950)
Other long-term investments	(1,906)	0
Total long-term investments acquired	(732,051)	(499,950)
Net increase in policy loans	(13,933)	(16,112)
Net (increase) decrease in short-term investments	(47,781)	(2,207)
Disposition of properties	0	54
Additions to properties	(30,663)	(14,482)
Investment in low-income housing interests	(27,078)	(39,279)
Cash used for investment activities	(479,928)	(296,830)
Cash provided from (used for) financing activities:
Proceeds from exercise of stock options	32,519	39,557
Net borrowings (repayments) of commercial paper	130,215	61,352
Excess tax benefit from stock option exercises	15,679	12,484
Acquisition of treasury stock	(330,066)	(342,084)
Cash dividends paid to shareholders	(50,217)	(48,628)
Net receipts (withdrawals) from deposit-type products	(69,188)	(49,431)
Cash provided by (used for) financing activities	(271,058)	(326,750)
Effect of foreign exchange rate changes on cash	14,560	9,237
Net (decrease) increase in cash	(6,534)	30,055
Cash at beginning of year	66,019	36,943
Cash at end of period	$ 59,485	$ 66,998

Accounting Policies

Accounting Policies	9 Months Ended
	Sep. 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 September 30, 2015 , and the condensed consolidated results of operations, comprehensive income, and cash flows for the periods ended September 30, 2015 and 2014 . The interim period condensed consolidated financial statements should be read in conjunction with the Consolidated Financial Statements that are included in the Form 10-K filed with the Securities Exchange Commission (SEC) 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	9 Months Ended
	Sep. 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 Nine Months Ended 2015 2014 2015 2014 Basic weighted average shares outstanding 124,457,996 129,969,902 125,788,925 131,529,818 Weighted average dilutive options outstanding 1,682,313 1,907,303 1,614,164 1,901,522 Diluted weighted average shares outstanding 126,140,309 131,877,205 127,403,089 133,431,340 Antidilutive shares — — — —

Postretirement Benefit Plans

Postretirement Benefit Plans	9 Months Ended
	Sep. 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 September 30, Pension Benefits Other Benefits 2015 2014 2015 2014 Service cost $ 3,990 $ 3,231 $ — $ 25 Interest cost 5,003 4,695 203 (63 ) Expected return on assets (5,323 ) (4,768 ) — — Amortization: Prior service cost 81 529 — — Actuarial (gain) loss 3,533 2,035 30 3 Actuarial valuation adjustment — — — 460 Direct recognition of expense — 131 166 114 Net periodic benefit cost $ 7,284 $ 5,853 $ 399 $ 539 Nine Months Ended September 30, Pension Benefits Other Benefits 2015 2014 2015 2014 Service cost $ 11,971 $ 9,694 $ — $ 74 Interest cost 15,009 14,333 610 234 Expected return on assets (15,969 ) (14,273 ) — — Amortization: Prior service cost 244 1,586 — — Actuarial (gain)/loss 10,601 6,127 90 3 Actuarial valuation adjustment — — — 460 Direct recognition of expense — 131 493 10 Net periodic benefit cost $ 21,856 $ 17,598 $ 1,193 $ 781 The following table presents assets at fair value for the defined-benefit pension plans at September 30, 2015 and the prior-year end. Pension Assets by Component September 30, 2015 December 31, 2014 Amount % Amount % Corporate debt $ 153,536 49 $ 166,825 52 Other fixed maturities 279 — 284 — Equity securities 121,199 39 127,568 39 Short-term investments 16,414 5 9,038 3 Guaranteed annuity contract 16,973 6 15,027 5 Other 3,571 1 4,156 1 Total $ 311,972 100 $ 322,898 100 The liability for the funded defined-benefit pension plans was $386 million at September 30, 2015 and $403 million at December 31, 2014 . Cash contributions of $13.6 million were made to the qualified pension plans during the nine months ended September 30, 2015 . Torchmark does not expect to make further cash contributions to these plans during 2015 . 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 September 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 September 30, 2015 and $71 million at December 31, 2014 .

Investments

Investments	9 Months Ended
	Sep. 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 September 30, 2015 is as follows: Portfolio Composition as of September 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 $ 373,835 $ 1,618 $ (5,696 ) $ 369,757 3 States, municipalities, and political subdivisions 1,296,976 138,075 (1,374 ) 1,433,677 10 Foreign governments 20,905 1,545 (4 ) 22,446 — Corporates, by sector: Financial 2,688,462 340,450 (44,834 ) 2,984,078 21 Utilities 2,105,221 274,626 (21,681 ) 2,358,166 17 Energy 1,538,147 89,072 (111,771 ) 1,515,448 11 Other corporate sectors 4,648,140 363,206 (163,826 ) 4,847,520 34 Total corporates 10,979,970 1,067,354 (342,112 ) 11,705,212 83 Collateralized debt obligations 63,960 16,745 (8,593 ) 72,112 1 Other asset-backed securities 19,273 978 — 20,251 — Redeemable preferred stocks, by sector: Financial 382,674 48,618 (4,431 ) 426,861 3 Utilities 28,655 1,228 — 29,883 — Total redeemable preferred stocks 411,329 49,846 (4,431 ) 456,744 3 Total fixed maturities 13,166,248 1,276,161 (362,210 ) 14,080,199 100 Equity securities 776 806 — 1,582 Total fixed maturities and equity securities $ 13,167,024 $ 1,276,967 $ (362,210 ) $ 14,081,781 * At fair value A schedule of fixed maturities by contractual maturity date at September 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 Fair Value Fixed maturities available for sale: Due in one year or less $ 53,589 $ 54,217 Due from one to five years 572,013 632,991 Due from five to ten years 951,645 1,042,986 Due from ten to twenty years 3,841,490 4,296,570 Due after twenty years 7,662,273 7,958,875 Mortgage-backed and asset-backed securities 85,238 94,560 $ 13,166,248 $ 14,080,199 Selected information about sales of fixed maturities is as follows. For the Nine Months Ended September 30, 2015 2014 Proceeds from sales $ 26,330 $ 56,447 Gross realized gains 260 16,473 Gross realized losses (354 ) (1,701 ) Fair Value Measurements : The following table represents assets measured at fair value on a recurring basis. Fair Value Measurements at September 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 $ — $ 369,757 $ — $ 369,757 States, municipalities, and political subdivisions — 1,433,677 — 1,433,677 Foreign governments — 22,446 — 22,446 Corporates, by sector: Financial — 2,920,889 63,189 2,984,078 Utilities 15,180 2,206,803 136,183 2,358,166 Energy — 1,488,583 26,865 1,515,448 Other corporate sectors — 4,534,087 313,433 4,847,520 Total corporates 15,180 11,150,362 539,670 11,705,212 Collateralized debt obligations — — 72,112 72,112 Other asset-backed securities — 20,251 — 20,251 Redeemable preferred stocks, by sector: Financial 10,068 416,793 — 426,861 Utilities — 29,883 — 29,883 Total redeemable preferred stocks 10,068 446,676 — 456,744 Total fixed maturities 25,248 13,443,169 611,782 14,080,199 Equity securities 723 — 859 1,582 Total fixed maturities and equity securities $ 25,971 $ 13,443,169 $ 612,641 $ 14,081,781 Percent of total 0.2 % 95.5 % 4.3 % 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 Nine Months Ended September 30, 2015 Collateralized 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 — 1,182 — 1,182 Included in other comprehensive income 12,797 (3,121 ) 26 9,702 Acquisitions — 38,600 — 38,600 Amortization 4,183 14 — 4,197 Other (2) (8,100 ) (9,719 ) — (17,819 ) Transfers in and/or out of Level 3 (3) — — — — Balance at September 30, 2015 $ 72,112 $ 539,670 $ 859 $ 612,641 Percent of total fixed maturity and equity securities 0.5 % 3.8 % — % 4.3 % For the Nine Months Ended September 30, 2014 Collateralized 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 3,929 19,967 57 23,953 Acquisitions — 186,365 — 186,365 Sales (16,049 ) (1 ) — (16,050 ) Amortization 4,072 10 — 4,082 Other (2) (3,231 ) (1,773 ) — (5,004 ) Transfers in and/or out of Level 3 (3) — — — — Balance at September 30, 2014 $ 62,850 $ 504,869 $ 833 $ 568,552 Percent of total fixed maturity and equity securities 0.4 % 3.6 % — % 4.0 % (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 nine -month periods ended September 30, 2015 and 2014 , respectively. 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 September 30, 2015 368 66 434 As of December 31, 2014 80 173 253 Torchmark’s entire fixed-maturity and equity portfolio consisted of 1,570 issues at September 30, 2015 and 1,604 issues at December 31, 2014 . The weighted average quality rating of all unrealized loss positions as of September 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 September 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 September 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 $ 216,022 $ (5,042 ) $ 14,920 $ (654 ) $ 230,942 $ (5,696 ) States, municipalities and political subdivisions 48,097 (1,033 ) 1,685 (107 ) 49,782 (1,140 ) Foreign governments 4,574 (4 ) — — 4,574 (4 ) Corporates, by sector: Financial 283,220 (11,605 ) — — 283,220 (11,605 ) Utilities 403,693 (21,681 ) — — 403,693 (21,681 ) Energy 650,698 (69,271 ) 92,025 (31,189 ) 742,723 (100,460 ) Other corporate sectors 1,547,634 (126,366 ) 44,927 (8,257 ) 1,592,561 (134,623 ) Total corporates 2,885,245 (228,923 ) 136,952 (39,446 ) 3,022,197 (268,369 ) Total investment grade 3,153,938 (235,002 ) 153,557 (40,207 ) 3,307,495 (275,209 ) Below investment grade: Bonds: States, municipalities and political subdivisions — — 321 (234 ) 321 (234 ) Corporates, by sector: Financial — — 72,564 (33,229 ) 72,564 (33,229 ) Energy 42,319 (8,391 ) 8,106 (2,920 ) 50,425 (11,311 ) Other corporate sectors 61,857 (22,737 ) 55,836 (6,466 ) 117,693 (29,203 ) Total corporates 104,176 (31,128 ) 136,506 (42,615 ) 240,682 (73,743 ) Collateralized debt obligations — — 11,407 (8,593 ) 11,407 (8,593 ) Redeemable preferred stocks, by sector: Financial — — 22,730 (4,431 ) 22,730 (4,431 ) Total redeemable preferred stocks — — 22,730 (4,431 ) 22,730 (4,431 ) Total below investment grade 104,176 (31,128 ) 170,964 (55,873 ) 275,140 (87,001 ) Total fixed maturities 3,258,114 (266,130 ) 324,521 (96,080 ) 3,582,635 (362,210 ) Equity securities — — — — — — Total fixed maturities and equity securities $ 3,258,114 $ (266,130 ) $ 324,521 $ (96,080 ) $ 3,582,635 $ (362,210 )

Supplemental Information about

Supplemental Information about Changes to Accumulated Other Comprehensive Income	9 Months Ended
	Sep. 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 nine month periods ended September 30, 2015 and 2014 . Components of Accumulated Other Comprehensive Income For the Three Months Ended September 30, 2015 Available for Deferred Foreign Pension Total Balance at July 1, 2015 $ 649,973 $ (8,415 ) $ 8,353 $ (94,592 ) $ 555,319 Other comprehensive income (loss) before reclassifications, net of tax (48,306 ) 934 (5,867 ) 1 (53,238 ) Reclassifications, net of tax (4,621 ) — — 2,369 (2,252 ) Other comprehensive income (loss) (52,927 ) 934 (5,867 ) 2,370 (55,490 ) Balance at September 30, 2015 $ 597,046 $ (7,481 ) $ 2,486 $ (92,222 ) $ 499,829 For the Three Months Ended September 30, 2014 Available Deferred Foreign Pension Total Balance at July 1, 2014 $ 933,015 $ (11,455 ) $ 26,124 $ (59,710 ) $ 887,974 Other comprehensive income (loss) before reclassifications, net of tax (1,991 ) 450 (4,566 ) 2 (6,105 ) Reclassifications, net of tax (711 ) — — 1,669 958 Other comprehensive income (loss) (2,702 ) 450 (4,566 ) 1,671 (5,147 ) Balance at September 30, 2014 $ 930,313 $ (11,005 ) $ 21,558 $ (58,039 ) $ 882,827 Note E—Supplemental Information about Changes to Accumulated Other Comprehensive Income (continued) Components of Accumulated Other Comprehensive Income For the Nine Months Ended September 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 (485,441 ) 3,277 (14,900 ) 118 (496,946 ) Reclassifications, net of tax (7,786 ) — — 7,109 (677 ) Other comprehensive income (loss) (493,227 ) 3,277 (14,900 ) 7,227 (497,623 ) Balance at September 30, 2015 $ 597,046 $ (7,481 ) $ 2,486 $ (92,222 ) $ 499,829 For the Nine Months Ended September 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 688,958 (4,277 ) (3,308 ) 299 681,672 Reclassifications, net of tax (14,841 ) — — 5,015 (9,826 ) Other comprehensive income (loss) 674,117 (4,277 ) (3,308 ) 5,314 671,846 Balance at September 30, 2014 $ 930,313 $ (11,005 ) $ 21,558 $ (58,039 ) $ 882,827 Reclassifications out of Accumulated Other Comprehensive Income are presented below for the three and nine month periods ended September 30, 2015 and 2014 . Reclassification Adjustments Three Months Ended Nine 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 $ (5,540 ) $ 1,261 $ (7,138 ) $ (15,935 ) Realized investment gains (losses) Amortization of (discount) premium (1,569 ) (2,354 ) (4,840 ) (6,898 ) Net investment income Total before tax (7,109 ) (1,093 ) (11,978 ) (22,833 ) Tax 2,488 382 4,192 7,992 Income Taxes Total after tax (4,621 ) (711 ) (7,786 ) (14,841 ) Pension adjustments: Amortization of prior service cost 81 529 244 1,586 Other operating expenses Amortization of actuarial gain (loss) 3,563 2,038 10,691 6,130 Other operating expenses Total before tax 3,644 2,567 10,935 7,716 Tax (1,275 ) (898 ) (3,826 ) (2,701 ) Income Taxes Total after tax 2,369 1,669 7,109 5,015 Total reclassifications (after tax) $ (2,252 ) $ 958 $ (677 ) $ (9,826 )

Business Segments

Business Segments	9 Months Ended
	Sep. 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. 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: Nine Months Ended 2015 2014 Benefit costs deferred $ 11,649 $ 45,382 Government risk-sharing premium adjustment 9,322 (28,532 ) Pre-tax addition to segment interim period income $ 20,971 $ 16,850 After tax amount $ 13,631 $ 10,952 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. Nine Months Ended 2015 2014 % Change Premium per segment analysis: Medicare Part D premium $ 232,102 $ 258,243 (10 ) Other health premium 690,221 644,758 7 Part D risk-sharing adjustment (9,322 ) 28,532 (133 ) Health premium per Condensed Consolidated Statements of Operations $ 913,001 $ 931,533 (2 ) During the first nine 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 $8.2 million in administrative settlements ( $5.3 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 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 amounts that do not relate to its core insurance operations from its segment analysis. 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 Nine Months Ended September 30, 2015 Life Health Medicare Annuity Investment Other & Adjustments Consolidated Revenue: Premium $ 1,552,309 $ 690,221 $ 232,102 $ 119 $ (9,322 ) (1) $ 2,465,429 Net investment income $ 579,632 579,632 Other income $ 2,201 (149 ) (3) 2,052 Total revenue 1,552,309 690,221 232,102 119 579,632 2,201 (9,471 ) 3,047,113 Expenses: Policy benefits 1,029,261 448,539 192,634 29,447 11,649 (1) 1,711,530 Required interest on reserves (412,264 ) (51,450 ) (40,084 ) 503,798 — Required interest on DAC 129,339 17,058 673 885 (147,955 ) — Amortization of acquisition costs 265,641 61,858 2,649 6,542 336,690 Commissions and premium tax 115,452 60,820 16,258 32 (149 ) (3) 192,413 Insurance administrative expense (2) 142,829 142,829 Parent expense 6,662 6,662 Stock compensation expense 21,877 21,877 Interest expense 57,420 57,420 Total expenses 1,127,429 536,825 212,214 (3,178 ) 413,263 171,368 11,500 2,469,421 Subtotal 424,880 153,396 19,888 3,297 166,369 (169,167 ) (20,971 ) 577,692 Nonoperating items 20,971 (1) 20,971 Measure of segment profitability (pretax) $ 424,880 $ 153,396 $ 19,888 $ 3,297 $ 166,369 $ (169,167 ) $ — 598,663 Deduct applicable income taxes (196,005 ) Segment profits after tax 402,658 Add back income taxes applicable to segment profitability 196,005 Add (deduct) realized investment gains (losses) 7,872 Deduct Part D adjustment (1) (20,971 ) Pretax income per Consolidated Statements of Operations $ 585,564 (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 Nine Months Ended September 30, 2014 Life Health Medicare Annuity Investment Other & Adjustments Consolidated Revenue: Premium $ 1,472,734 $ 644,758 $ 258,243 $ 334 $ 28,532 (1) $ 2,404,601 Net investment income $ 567,569 567,569 Other income $ 1,990 (178 ) (3) 1,812 Total revenue 1,472,734 644,758 258,243 334 567,569 1,990 28,354 2,973,982 Expenses: Policy benefits 964,305 414,607 213,184 31,599 53,561 (1,5) 1,677,256 Required interest on reserves (395,595 ) (48,018 ) (41,576 ) 485,189 — Required interest on DAC 125,758 16,823 534 1,120 (144,235 ) — Amortization of acquisition costs 251,954 53,088 2,127 5,959 313,128 Commissions and premium tax 105,724 59,787 19,664 37 (178 ) (3) 185,034 Insurance administrative (2) 134,918 2,337 (4) 137,255 Parent expense 6,284 6,284 Stock compensation expense 25,219 25,219 Interest expense 57,119 57,119 Total expenses 1,052,146 496,287 235,509 (2,861 ) 398,073 166,421 55,720 2,401,295 Subtotal 420,588 148,471 22,734 3,195 169,496 (164,431 ) (27,366 ) 572,687 Nonoperating items 27,366 (1,4,5) 27,366 Measure of segment profitability (pretax) $ 420,588 $ 148,471 $ 22,734 $ 3,195 $ 169,496 $ (164,431 ) $ — 600,053 Deduct applicable income taxes (196,288 ) Segment profits after tax 403,765 Add back income taxes applicable to segment profitability 196,288 Add (deduct) realized investment gains (losses) 15,713 Deduct Part D adjustment (1) (16,850 ) Deduct legal settlement expense (4) (2,337 ) Deduct administrative settlements (5) (8,179 ) Pretax income per Consolidated Statements of Operations $ 588,400 (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 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 Nine Months Ended September 30, Increase (Decrease) 2015 2014* Amount % Life $ 424,880 $ 420,588 $ 4,292 1 Health 153,396 148,471 4,925 3 Medicare Part D 19,888 22,734 (2,846 ) (13 ) Annuity 3,297 3,195 102 3 Investment 166,369 169,496 (3,127 ) (2 ) Other and corporate: Other income 2,201 1,990 211 11 Administrative expense (142,829 ) (134,918 ) (7,911 ) 6 Corporate (28,539 ) (31,503 ) 2,964 (9 ) Pretax total 598,663 600,053 (1,390 ) — Applicable taxes (196,005 ) (196,288 ) 283 — Total 402,658 403,765 (1,107 ) — Reconciling items, net of tax: Realized gains (losses) - Investments 5,117 10,213 (5,096 ) (50 ) Part D adjustment (13,631 ) (10,952 ) (2,679 ) 24 Administrative settlements — (5,316 ) 5,316 (100 ) Legal settlement expense — (1,519 ) 1,519 (100 ) Net income $ 394,144 $ 396,191 $ (2,047 ) (1 ) * 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	9 Months Ended
	Sep. 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 nine months ended September 30, 2014 . Three Months Ended September 30, 2014 Income Statement As previously reported Adjustments As adjusted Net investment income $ 182,101 $ 7,487 $ 189,588 Total revenue 967,001 7,487 974,488 Income before income taxes 189,564 7,487 197,051 Income taxes (57,152 ) (7,487 ) (64,639 ) Net income 132,412 — 132,412 Nine Months Ended September 30, 2014 Income Statement As previously reported Adjustments As adjusted Net investment income $ 545,978 $ 21,591 $ 567,569 Total revenue 2,968,104 21,591 2,989,695 Income before income taxes 566,809 21,591 588,400 Income taxes (170,618 ) (21,591 ) (192,209 ) Net income 396,191 — 396,191 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 requires 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 debt issuance costs will continue to 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 and there was no material impact on the consolidated financial statements.

Accounting Policies (Policies)

Accounting Policies (Policies)	9 Months Ended
	Sep. 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 September 30, 2015 , and the condensed consolidated results of operations, comprehensive income, and cash flows for the periods ended September 30, 2015 and 2014 . The interim period condensed consolidated financial statements should be read in conjunction with the Consolidated Financial Statements that are included in the Form 10-K filed with the Securities Exchange Commission (SEC) on February 27, 2015.
New Accounting Pronouncements	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.

Earnings Per Share (Tables)

Earnings Per Share (Tables)	9 Months Ended
	Sep. 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 Nine Months Ended 2015 2014 2015 2014 Basic weighted average shares outstanding 124,457,996 129,969,902 125,788,925 131,529,818 Weighted average dilutive options outstanding 1,682,313 1,907,303 1,614,164 1,901,522 Diluted weighted average shares outstanding 126,140,309 131,877,205 127,403,089 133,431,340 Antidilutive shares — — — —

Postretirement Benefit Plans (T

Postretirement Benefit Plans (Tables)	9 Months Ended
	Sep. 30, 2015
Compensation and Retirement Disclosure [Abstract]
Summary of Post-Retirement Benefit Costs by Component	The following tables present a summary of post-retirement benefit costs by component. Components of Post-Retirement Benefit Costs Three Months Ended September 30, Pension Benefits Other Benefits 2015 2014 2015 2014 Service cost $ 3,990 $ 3,231 $ — $ 25 Interest cost 5,003 4,695 203 (63 ) Expected return on assets (5,323 ) (4,768 ) — — Amortization: Prior service cost 81 529 — — Actuarial (gain) loss 3,533 2,035 30 3 Actuarial valuation adjustment — — — 460 Direct recognition of expense — 131 166 114 Net periodic benefit cost $ 7,284 $ 5,853 $ 399 $ 539 Nine Months Ended September 30, Pension Benefits Other Benefits 2015 2014 2015 2014 Service cost $ 11,971 $ 9,694 $ — $ 74 Interest cost 15,009 14,333 610 234 Expected return on assets (15,969 ) (14,273 ) — — Amortization: Prior service cost 244 1,586 — — Actuarial (gain)/loss 10,601 6,127 90 3 Actuarial valuation adjustment — — — 460 Direct recognition of expense — 131 493 10 Net periodic benefit cost $ 21,856 $ 17,598 $ 1,193 $ 781
Schedule of Assets at Fair Value for Defined-Benefit Pension Plans	The following table presents assets at fair value for the defined-benefit pension plans at September 30, 2015 and the prior-year end. Pension Assets by Component September 30, 2015 December 31, 2014 Amount % Amount % Corporate debt $ 153,536 49 $ 166,825 52 Other fixed maturities 279 — 284 — Equity securities 121,199 39 127,568 39 Short-term investments 16,414 5 9,038 3 Guaranteed annuity contract 16,973 6 15,027 5 Other 3,571 1 4,156 1 Total $ 311,972 100 $ 322,898 100

Investments (Tables)

Investments (Tables)	9 Months Ended
	Sep. 30, 2015
Investments, Debt and Equity Securities [Abstract]
Summary of Fixed Maturities and Equity Securities Available for Sale by Cost or Amortized Cost and Estimated Fair Value	A summary of fixed maturities and equity securities available for sale by cost or amortized cost and estimated fair value at September 30, 2015 is as follows: Portfolio Composition as of September 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 $ 373,835 $ 1,618 $ (5,696 ) $ 369,757 3 States, municipalities, and political subdivisions 1,296,976 138,075 (1,374 ) 1,433,677 10 Foreign governments 20,905 1,545 (4 ) 22,446 — Corporates, by sector: Financial 2,688,462 340,450 (44,834 ) 2,984,078 21 Utilities 2,105,221 274,626 (21,681 ) 2,358,166 17 Energy 1,538,147 89,072 (111,771 ) 1,515,448 11 Other corporate sectors 4,648,140 363,206 (163,826 ) 4,847,520 34 Total corporates 10,979,970 1,067,354 (342,112 ) 11,705,212 83 Collateralized debt obligations 63,960 16,745 (8,593 ) 72,112 1 Other asset-backed securities 19,273 978 — 20,251 — Redeemable preferred stocks, by sector: Financial 382,674 48,618 (4,431 ) 426,861 3 Utilities 28,655 1,228 — 29,883 — Total redeemable preferred stocks 411,329 49,846 (4,431 ) 456,744 3 Total fixed maturities 13,166,248 1,276,161 (362,210 ) 14,080,199 100 Equity securities 776 806 — 1,582 Total fixed maturities and equity securities $ 13,167,024 $ 1,276,967 $ (362,210 ) $ 14,081,781 * At fair value
Schedule of Fixed Maturities by Contractual Maturity Date	A schedule of fixed maturities by contractual maturity date at September 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 Fair Value Fixed maturities available for sale: Due in one year or less $ 53,589 $ 54,217 Due from one to five years 572,013 632,991 Due from five to ten years 951,645 1,042,986 Due from ten to twenty years 3,841,490 4,296,570 Due after twenty years 7,662,273 7,958,875 Mortgage-backed and asset-backed securities 85,238 94,560 $ 13,166,248 $ 14,080,199
Schedule of Selected Information about Sales of Fixed Maturities	Selected information about sales of fixed maturities is as follows. For the Nine Months Ended September 30, 2015 2014 Proceeds from sales $ 26,330 $ 56,447 Gross realized gains 260 16,473 Gross realized losses (354 ) (1,701 )
Schedule of 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 September 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 $ — $ 369,757 $ — $ 369,757 States, municipalities, and political subdivisions — 1,433,677 — 1,433,677 Foreign governments — 22,446 — 22,446 Corporates, by sector: Financial — 2,920,889 63,189 2,984,078 Utilities 15,180 2,206,803 136,183 2,358,166 Energy — 1,488,583 26,865 1,515,448 Other corporate sectors — 4,534,087 313,433 4,847,520 Total corporates 15,180 11,150,362 539,670 11,705,212 Collateralized debt obligations — — 72,112 72,112 Other asset-backed securities — 20,251 — 20,251 Redeemable preferred stocks, by sector: Financial 10,068 416,793 — 426,861 Utilities — 29,883 — 29,883 Total redeemable preferred stocks 10,068 446,676 — 456,744 Total fixed maturities 25,248 13,443,169 611,782 14,080,199 Equity securities 723 — 859 1,582 Total fixed maturities and equity securities $ 25,971 $ 13,443,169 $ 612,641 $ 14,081,781 Percent of total 0.2 % 95.5 % 4.3 % 100.0 %
Schedule of Analysis of Changes in Fair Value Measurements 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 Nine Months Ended September 30, 2015 Collateralized 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 — 1,182 — 1,182 Included in other comprehensive income 12,797 (3,121 ) 26 9,702 Acquisitions — 38,600 — 38,600 Amortization 4,183 14 — 4,197 Other (2) (8,100 ) (9,719 ) — (17,819 ) Transfers in and/or out of Level 3 (3) — — — — Balance at September 30, 2015 $ 72,112 $ 539,670 $ 859 $ 612,641 Percent of total fixed maturity and equity securities 0.5 % 3.8 % — % 4.3 % For the Nine Months Ended September 30, 2014 Collateralized 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 3,929 19,967 57 23,953 Acquisitions — 186,365 — 186,365 Sales (16,049 ) (1 ) — (16,050 ) Amortization 4,072 10 — 4,082 Other (2) (3,231 ) (1,773 ) — (5,004 ) Transfers in and/or out of Level 3 (3) — — — — Balance at September 30, 2014 $ 62,850 $ 504,869 $ 833 $ 568,552 Percent of total fixed maturity and equity securities 0.4 % 3.6 % — % 4.0 % (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 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 September 30, 2015 368 66 434 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 September 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 September 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 $ 216,022 $ (5,042 ) $ 14,920 $ (654 ) $ 230,942 $ (5,696 ) States, municipalities and political subdivisions 48,097 (1,033 ) 1,685 (107 ) 49,782 (1,140 ) Foreign governments 4,574 (4 ) — — 4,574 (4 ) Corporates, by sector: Financial 283,220 (11,605 ) — — 283,220 (11,605 ) Utilities 403,693 (21,681 ) — — 403,693 (21,681 ) Energy 650,698 (69,271 ) 92,025 (31,189 ) 742,723 (100,460 ) Other corporate sectors 1,547,634 (126,366 ) 44,927 (8,257 ) 1,592,561 (134,623 ) Total corporates 2,885,245 (228,923 ) 136,952 (39,446 ) 3,022,197 (268,369 ) Total investment grade 3,153,938 (235,002 ) 153,557 (40,207 ) 3,307,495 (275,209 ) Below investment grade: Bonds: States, municipalities and political subdivisions — — 321 (234 ) 321 (234 ) Corporates, by sector: Financial — — 72,564 (33,229 ) 72,564 (33,229 ) Energy 42,319 (8,391 ) 8,106 (2,920 ) 50,425 (11,311 ) Other corporate sectors 61,857 (22,737 ) 55,836 (6,466 ) 117,693 (29,203 ) Total corporates 104,176 (31,128 ) 136,506 (42,615 ) 240,682 (73,743 ) Collateralized debt obligations — — 11,407 (8,593 ) 11,407 (8,593 ) Redeemable preferred stocks, by sector: Financial — — 22,730 (4,431 ) 22,730 (4,431 ) Total redeemable preferred stocks — — 22,730 (4,431 ) 22,730 (4,431 ) Total below investment grade 104,176 (31,128 ) 170,964 (55,873 ) 275,140 (87,001 ) Total fixed maturities 3,258,114 (266,130 ) 324,521 (96,080 ) 3,582,635 (362,210 ) Equity securities — — — — — — Total fixed maturities and equity securities $ 3,258,114 $ (266,130 ) $ 324,521 $ (96,080 ) $ 3,582,635 $ (362,210 )

Supplemental Information abou18

Supplemental Information about Changes to Accumulated Other Comprehensive Income (Tables)	9 Months Ended
	Sep. 30, 2015
Equity [Abstract]
Schedule of Analysis 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 nine month periods ended September 30, 2015 and 2014 . Components of Accumulated Other Comprehensive Income For the Three Months Ended September 30, 2015 Available for Deferred Foreign Pension Total Balance at July 1, 2015 $ 649,973 $ (8,415 ) $ 8,353 $ (94,592 ) $ 555,319 Other comprehensive income (loss) before reclassifications, net of tax (48,306 ) 934 (5,867 ) 1 (53,238 ) Reclassifications, net of tax (4,621 ) — — 2,369 (2,252 ) Other comprehensive income (loss) (52,927 ) 934 (5,867 ) 2,370 (55,490 ) Balance at September 30, 2015 $ 597,046 $ (7,481 ) $ 2,486 $ (92,222 ) $ 499,829 For the Three Months Ended September 30, 2014 Available Deferred Foreign Pension Total Balance at July 1, 2014 $ 933,015 $ (11,455 ) $ 26,124 $ (59,710 ) $ 887,974 Other comprehensive income (loss) before reclassifications, net of tax (1,991 ) 450 (4,566 ) 2 (6,105 ) Reclassifications, net of tax (711 ) — — 1,669 958 Other comprehensive income (loss) (2,702 ) 450 (4,566 ) 1,671 (5,147 ) Balance at September 30, 2014 $ 930,313 $ (11,005 ) $ 21,558 $ (58,039 ) $ 882,827 Note E—Supplemental Information about Changes to Accumulated Other Comprehensive Income (continued) Components of Accumulated Other Comprehensive Income For the Nine Months Ended September 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 (485,441 ) 3,277 (14,900 ) 118 (496,946 ) Reclassifications, net of tax (7,786 ) — — 7,109 (677 ) Other comprehensive income (loss) (493,227 ) 3,277 (14,900 ) 7,227 (497,623 ) Balance at September 30, 2015 $ 597,046 $ (7,481 ) $ 2,486 $ (92,222 ) $ 499,829 For the Nine Months Ended September 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 688,958 (4,277 ) (3,308 ) 299 681,672 Reclassifications, net of tax (14,841 ) — — 5,015 (9,826 ) Other comprehensive income (loss) 674,117 (4,277 ) (3,308 ) 5,314 671,846 Balance at September 30, 2014 $ 930,313 $ (11,005 ) $ 21,558 $ (58,039 ) $ 882,827
Summary of Reclassifications Out of Accumulated Other Comprehensive Income	Reclassifications out of Accumulated Other Comprehensive Income are presented below for the three and nine month periods ended September 30, 2015 and 2014 . Reclassification Adjustments Three Months Ended Nine 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 $ (5,540 ) $ 1,261 $ (7,138 ) $ (15,935 ) Realized investment gains (losses) Amortization of (discount) premium (1,569 ) (2,354 ) (4,840 ) (6,898 ) Net investment income Total before tax (7,109 ) (1,093 ) (11,978 ) (22,833 ) Tax 2,488 382 4,192 7,992 Income Taxes Total after tax (4,621 ) (711 ) (7,786 ) (14,841 ) Pension adjustments: Amortization of prior service cost 81 529 244 1,586 Other operating expenses Amortization of actuarial gain (loss) 3,563 2,038 10,691 6,130 Other operating expenses Total before tax 3,644 2,567 10,935 7,716 Tax (1,275 ) (898 ) (3,826 ) (2,701 ) Income Taxes Total after tax 2,369 1,669 7,109 5,015 Total reclassifications (after tax) $ (2,252 ) $ 958 $ (677 ) $ (9,826 )

Business Segments (Tables)

Business Segments (Tables)	9 Months Ended
	Sep. 30, 2015
Segment Reporting [Abstract]
Schedule of Analysis of Adjustments for Difference in Interim Medicare Part D Results for Segment Purposes and GAAP for Medicare Part D	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: Nine Months Ended 2015 2014 Benefit costs deferred $ 11,649 $ 45,382 Government risk-sharing premium adjustment 9,322 (28,532 ) Pre-tax addition to segment interim period income $ 20,971 $ 16,850 After tax amount $ 13,631 $ 10,952
Reconciliation of Health Premium Included in the Segment Analysis with Health Premium	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. Nine Months Ended 2015 2014 % Change Premium per segment analysis: Medicare Part D premium $ 232,102 $ 258,243 (10 ) Other health premium 690,221 644,758 7 Part D risk-sharing adjustment (9,322 ) 28,532 (133 ) Health premium per Condensed Consolidated Statements of Operations $ 913,001 $ 931,533 (2 )
Reconciliation of Segment Operating Information to Consolidated Statement of 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 Nine Months Ended September 30, 2015 Life Health Medicare Annuity Investment Other & Adjustments Consolidated Revenue: Premium $ 1,552,309 $ 690,221 $ 232,102 $ 119 $ (9,322 ) (1) $ 2,465,429 Net investment income $ 579,632 579,632 Other income $ 2,201 (149 ) (3) 2,052 Total revenue 1,552,309 690,221 232,102 119 579,632 2,201 (9,471 ) 3,047,113 Expenses: Policy benefits 1,029,261 448,539 192,634 29,447 11,649 (1) 1,711,530 Required interest on reserves (412,264 ) (51,450 ) (40,084 ) 503,798 — Required interest on DAC 129,339 17,058 673 885 (147,955 ) — Amortization of acquisition costs 265,641 61,858 2,649 6,542 336,690 Commissions and premium tax 115,452 60,820 16,258 32 (149 ) (3) 192,413 Insurance administrative expense (2) 142,829 142,829 Parent expense 6,662 6,662 Stock compensation expense 21,877 21,877 Interest expense 57,420 57,420 Total expenses 1,127,429 536,825 212,214 (3,178 ) 413,263 171,368 11,500 2,469,421 Subtotal 424,880 153,396 19,888 3,297 166,369 (169,167 ) (20,971 ) 577,692 Nonoperating items 20,971 (1) 20,971 Measure of segment profitability (pretax) $ 424,880 $ 153,396 $ 19,888 $ 3,297 $ 166,369 $ (169,167 ) $ — 598,663 Deduct applicable income taxes (196,005 ) Segment profits after tax 402,658 Add back income taxes applicable to segment profitability 196,005 Add (deduct) realized investment gains (losses) 7,872 Deduct Part D adjustment (1) (20,971 ) Pretax income per Consolidated Statements of Operations $ 585,564 (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 Nine Months Ended September 30, 2014 Life Health Medicare Annuity Investment Other & Adjustments Consolidated Revenue: Premium $ 1,472,734 $ 644,758 $ 258,243 $ 334 $ 28,532 (1) $ 2,404,601 Net investment income $ 567,569 567,569 Other income $ 1,990 (178 ) (3) 1,812 Total revenue 1,472,734 644,758 258,243 334 567,569 1,990 28,354 2,973,982 Expenses: Policy benefits 964,305 414,607 213,184 31,599 53,561 (1,5) 1,677,256 Required interest on reserves (395,595 ) (48,018 ) (41,576 ) 485,189 — Required interest on DAC 125,758 16,823 534 1,120 (144,235 ) — Amortization of acquisition costs 251,954 53,088 2,127 5,959 313,128 Commissions and premium tax 105,724 59,787 19,664 37 (178 ) (3) 185,034 Insurance administrative (2) 134,918 2,337 (4) 137,255 Parent expense 6,284 6,284 Stock compensation expense 25,219 25,219 Interest expense 57,119 57,119 Total expenses 1,052,146 496,287 235,509 (2,861 ) 398,073 166,421 55,720 2,401,295 Subtotal 420,588 148,471 22,734 3,195 169,496 (164,431 ) (27,366 ) 572,687 Nonoperating items 27,366 (1,4,5) 27,366 Measure of segment profitability (pretax) $ 420,588 $ 148,471 $ 22,734 $ 3,195 $ 169,496 $ (164,431 ) $ — 600,053 Deduct applicable income taxes (196,288 ) Segment profits after tax 403,765 Add back income taxes applicable to segment profitability 196,288 Add (deduct) realized investment gains (losses) 15,713 Deduct Part D adjustment (1) (16,850 ) Deduct legal settlement expense (4) (2,337 ) Deduct administrative settlements (5) (8,179 ) Pretax income per Consolidated Statements of Operations $ 588,400 (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 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 Nine Months Ended September 30, Increase (Decrease) 2015 2014* Amount % Life $ 424,880 $ 420,588 $ 4,292 1 Health 153,396 148,471 4,925 3 Medicare Part D 19,888 22,734 (2,846 ) (13 ) Annuity 3,297 3,195 102 3 Investment 166,369 169,496 (3,127 ) (2 ) Other and corporate: Other income 2,201 1,990 211 11 Administrative expense (142,829 ) (134,918 ) (7,911 ) 6 Corporate (28,539 ) (31,503 ) 2,964 (9 ) Pretax total 598,663 600,053 (1,390 ) — Applicable taxes (196,005 ) (196,288 ) 283 — Total 402,658 403,765 (1,107 ) — Reconciling items, net of tax: Realized gains (losses) - Investments 5,117 10,213 (5,096 ) (50 ) Part D adjustment (13,631 ) (10,952 ) (2,679 ) 24 Administrative settlements — (5,316 ) 5,316 (100 ) Legal settlement expense — (1,519 ) 1,519 (100 ) Net income $ 394,144 $ 396,191 $ (2,047 ) (1 ) * 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)	9 Months Ended
	Sep. 30, 2015
Accounting Changes and Error Corrections [Abstract]
Summary of the Impact of the Retrospectively Adjusted Balances	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 nine months ended September 30, 2014 . Three Months Ended September 30, 2014 Income Statement As previously reported Adjustments As adjusted Net investment income $ 182,101 $ 7,487 $ 189,588 Total revenue 967,001 7,487 974,488 Income before income taxes 189,564 7,487 197,051 Income taxes (57,152 ) (7,487 ) (64,639 ) Net income 132,412 — 132,412 Nine Months Ended September 30, 2014 Income Statement As previously reported Adjustments As adjusted Net investment income $ 545,978 $ 21,591 $ 567,569 Total revenue 2,968,104 21,591 2,989,695 Income before income taxes 566,809 21,591 588,400 Income taxes (170,618 ) (21,591 ) (192,209 ) Net income 396,191 — 396,191

Earnings Per Share - Reconcilia

Earnings Per Share - Reconciliation of Basic and Diluted Weighted - Average Shares Outstanding (Detail) - shares	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Earnings Per Share [Abstract]
Basic weighted average shares outstanding	124,457,996	129,969,902	125,788,925	131,529,818
Weighted average dilutive options outstanding	1,682,313	1,907,303	1,614,164	1,901,522
Diluted weighted average shares outstanding	126,140,309	131,877,205	127,403,089	133,431,340
Antidilutive shares	0	0	0	0

Postretirement Benefit Plans -

Postretirement Benefit Plans - Summary of Post-Retirement Benefit Costs by Component (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 3,990	$ 3,231	$ 11,971	$ 9,694
Interest cost	5,003	4,695	15,009	14,333
Expected return on assets	(5,323)	(4,768)	(15,969)	(14,273)
Amortization:
Prior service cost	81	529	244	1,586
Actuarial (gain) loss	3,533	2,035	10,601	6,127
Actuarial valuation adjustment	0	0	0	0
Direct recognition of expense	0	131	0	131
Net periodic benefit cost	7,284	5,853	21,856	17,598
Other Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	0	25	0	74
Interest cost	203	(63)	610	234
Expected return on assets	0	0	0	0
Amortization:
Prior service cost	0	0	0	0
Actuarial (gain) loss	30	3	90	3
Actuarial valuation adjustment	0	460	0	460
Direct recognition of expense	166	114	493	10
Net periodic benefit cost	$ 399	$ 539	$ 1,193	$ 781

Postretirement Benefit Plans 23

Postretirement Benefit Plans - Schedule of Assets at Fair Value for Defined-Benefit Pension Plans (Detail) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Defined Benefit Plan Disclosure [Line Items]
Defined benefit pension plans-fair value of plan assets	$ 311,972	$ 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	$ 279	$ 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	$ 121,199	$ 127,568
Percent of total pension assets	39.00%	39.00%
Guaranteed annuity contract [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined benefit pension plans-fair value of plan assets	$ 16,973	$ 15,027
Percent of total pension assets	6.00%	5.00%
Other [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined benefit pension plans-fair value of plan assets	$ 3,571	$ 4,156
Percent of total pension assets	1.00%	1.00%
Corporate debt [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined benefit pension plans-fair value of plan assets	$ 153,536	$ 166,825
Percent of total pension assets	49.00%	52.00%
Short-term investments [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined benefit pension plans-fair value of plan assets	$ 16,414	$ 9,038
Percent of total pension assets	5.00%	3.00%

Postretirement Benefit Plans 24

Postretirement Benefit Plans - Additional Information (Detail) - USD ($) $ in Millions	9 Months Ended	12 Months Ended
	Sep. 30, 2015	Dec. 31, 2014
Compensation and Retirement Disclosure [Abstract]
Liability related to funded defined-benefit pension plans	$ 386	$ 403
Cash contributions made to benefit plans	13.6
Insurance cash value and Rabbi Trust investments supporting supplemental pension plan liability	78	74
Non-qualified supplemental retirement pension plan liability	$ 73	$ 71

Investments - Summary of Fixed

Investments - Summary of Fixed Maturities and Equity Securities Available for Sale by Component (Detail) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Schedule of Available-for-sale Securities [Line Items]
Fixed Maturities, Available for Sale, Amortized Cost	$ 13,166,248	$ 12,823,612
Debt Securities Fair Value	14,080,199	14,493,060
Equity Securities Cost or Amortized Cost	776	776
Equity Securities Fair Value	1,582	$ 1,477
Total Available for Sale Securities Cost	13,167,024
Gross Unrealized Gains	1,276,967
Gross Unrealized Losses	(362,210)
Total Available for Sale Securities Fair Value	14,081,781
Equity securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Equity Securities Cost or Amortized Cost	776
Gross Unrealized Gains	806
Gross Unrealized Losses	0
Equity Securities Fair Value	1,582
Fixed maturities available for sale [Member]
Schedule of Available-for-sale Securities [Line Items]
Fixed Maturities, Available for Sale, Amortized Cost	13,166,248
Gross Unrealized Gains	1,276,161
Gross Unrealized Losses	(362,210)
Debt Securities Fair Value	$ 14,080,199
Percentage of Total Fixed Maturities At Fair Value	100.00%
Fixed maturities available for sale [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	$ 373,835
Gross Unrealized Gains	1,618
Gross Unrealized Losses	(5,696)
Debt Securities Fair Value	$ 369,757
Percentage of Total Fixed Maturities At Fair Value	3.00%
Fixed maturities available for sale [Member] | States, municipalities, and political subdivisions [Member]
Schedule of Available-for-sale Securities [Line Items]
Fixed Maturities, Available for Sale, Amortized Cost	$ 1,296,976
Gross Unrealized Gains	138,075
Gross Unrealized Losses	(1,374)
Debt Securities Fair Value	$ 1,433,677
Percentage of Total Fixed Maturities At Fair Value	10.00%
Fixed maturities available for sale [Member] | Foreign governments [Member]
Schedule of Available-for-sale Securities [Line Items]
Fixed Maturities, Available for Sale, Amortized Cost	$ 20,905
Gross Unrealized Gains	1,545
Gross Unrealized Losses	(4)
Debt Securities Fair Value	$ 22,446
Percentage of Total Fixed Maturities At Fair Value	0.00%
Fixed maturities available for sale [Member] | Corporates [Member]
Schedule of Available-for-sale Securities [Line Items]
Fixed Maturities, Available for Sale, Amortized Cost	$ 10,979,970
Gross Unrealized Gains	1,067,354
Gross Unrealized Losses	(342,112)
Debt Securities Fair Value	$ 11,705,212
Percentage of Total Fixed Maturities At Fair Value	83.00%
Fixed maturities available for sale [Member] | Collateralized debt obligations [Member]
Schedule of Available-for-sale Securities [Line Items]
Fixed Maturities, Available for Sale, Amortized Cost	$ 63,960
Gross Unrealized Gains	16,745
Gross Unrealized Losses	(8,593)
Debt Securities Fair Value	$ 72,112
Percentage of Total Fixed Maturities At Fair Value	1.00%
Fixed maturities available for sale [Member] | Other asset-backed securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Fixed Maturities, Available for Sale, Amortized Cost	$ 19,273
Gross Unrealized Gains	978
Gross Unrealized Losses	0
Debt Securities Fair Value	$ 20,251
Percentage of Total Fixed Maturities At Fair Value	0.00%
Fixed maturities available for sale [Member] | Redeemable preferred stocks [Member]
Schedule of Available-for-sale Securities [Line Items]
Fixed Maturities, Available for Sale, Amortized Cost	$ 411,329
Gross Unrealized Gains	49,846
Gross Unrealized Losses	(4,431)
Debt Securities Fair Value	$ 456,744
Percentage of Total Fixed Maturities At Fair Value	3.00%
Financial [Member] | Fixed maturities available for sale [Member] | Corporates [Member]
Schedule of Available-for-sale Securities [Line Items]
Fixed Maturities, Available for Sale, Amortized Cost	$ 2,688,462
Gross Unrealized Gains	340,450
Gross Unrealized Losses	(44,834)
Debt Securities Fair Value	$ 2,984,078
Percentage of Total Fixed Maturities At Fair Value	21.00%
Financial [Member] | Fixed maturities available for sale [Member] | Redeemable preferred stocks [Member]
Schedule of Available-for-sale Securities [Line Items]
Fixed Maturities, Available for Sale, Amortized Cost	$ 382,674
Gross Unrealized Gains	48,618
Gross Unrealized Losses	(4,431)
Debt Securities Fair Value	$ 426,861
Percentage of Total Fixed Maturities At Fair Value	3.00%
Utilities [Member] | Fixed maturities available for sale [Member] | Corporates [Member]
Schedule of Available-for-sale Securities [Line Items]
Fixed Maturities, Available for Sale, Amortized Cost	$ 2,105,221
Gross Unrealized Gains	274,626
Gross Unrealized Losses	(21,681)
Debt Securities Fair Value	$ 2,358,166
Percentage of Total Fixed Maturities At Fair Value	17.00%
Utilities [Member] | Fixed maturities available for sale [Member] | Redeemable preferred stocks [Member]
Schedule of Available-for-sale Securities [Line Items]
Fixed Maturities, Available for Sale, Amortized Cost	$ 28,655
Gross Unrealized Gains	1,228
Gross Unrealized Losses	0
Debt Securities Fair Value	$ 29,883
Percentage of Total Fixed Maturities At Fair Value	0.00%
Energy [Member] | Fixed maturities available for sale [Member] | Corporates [Member]
Schedule of Available-for-sale Securities [Line Items]
Fixed Maturities, Available for Sale, Amortized Cost	$ 1,538,147
Gross Unrealized Gains	89,072
Gross Unrealized Losses	(111,771)
Debt Securities Fair Value	$ 1,515,448
Percentage of Total Fixed Maturities At Fair Value	11.00%
Other corporate sectors [Member] | Fixed maturities available for sale [Member] | Corporates [Member]
Schedule of Available-for-sale Securities [Line Items]
Fixed Maturities, Available for Sale, Amortized Cost	$ 4,648,140
Gross Unrealized Gains	363,206
Gross Unrealized Losses	(163,826)
Debt Securities Fair Value	$ 4,847,520
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	Sep. 30, 2015	Dec. 31, 2014
Fixed Maturities Available for Sale, Amortized Cost
Due in one year or less	$ 53,589
Due from one to five years	572,013
Due from five to ten years	951,645
Due from ten to twenty years	3,841,490
Due after twenty years	7,662,273
Mortgage-backed and asset-backed securities	85,238
Fixed Maturities, Available for Sale, Amortized Cost	13,166,248	$ 12,823,612
Fixed Maturities Available for Sale, Fair Value
Due in one year or less	54,217
Due from one to five years	632,991
Due from five to ten years	1,042,986
Due from ten to twenty years	4,296,570
Due after twenty years	7,958,875
Mortgage-backed and asset-backed securities	94,560
Fixed Maturities, Available for Sale, Fair Value	$ 14,080,199	$ 14,493,060

Investments - Schedule of Selec

Investments - Schedule of Selected Information about Sales of Fixed Maturities (Detail) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
Schedule of Available-for-sale Securities [Line Items]
Proceeds from sales	$ 26,330	$ 56,447
Fixed Maturities [Member]
Schedule of Available-for-sale Securities [Line Items]
Proceeds from sales	26,330	56,447
Gross realized gains	260	16,473
Gross realized losses	$ (354)	$ (1,701)

Investments - Assets Measured a

Investments - Assets Measured at Fair Value on Recurring Basis (Detail) - USD ($) $ in Thousands	Sep. 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	$ 14,080,199	$ 14,493,060
Equity securities	1,582	$ 1,477
Total fixed maturities and equity securities	$ 14,081,781
Percent of total	100.00%
Fixed maturities available for sale [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value fixed maturities measured on recurring basis	$ 14,080,199
Equity securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	1,582
U.S. Government direct, guaranteed, and government-sponsored enterprises [Member] | Fixed maturities available for sale [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value fixed maturities measured on recurring basis	369,757
States, municipalities, and political subdivisions [Member] | Fixed maturities available for sale [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value fixed maturities measured on recurring basis	1,433,677
Foreign governments [Member] | Fixed maturities available for sale [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value fixed maturities measured on recurring basis	22,446
Corporates [Member] | Fixed maturities available for sale [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value fixed maturities measured on recurring basis	11,705,212
Collateralized debt obligations [Member] | Fixed maturities available for sale [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value fixed maturities measured on recurring basis	72,112
Other asset-backed securities [Member] | Fixed maturities available for sale [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value fixed maturities measured on recurring basis	20,251
Redeemable preferred stocks [Member] | Fixed maturities available for sale [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value fixed maturities measured on recurring basis	456,744
Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total fixed maturities and equity securities	$ 25,971
Percent of total	0.20%
Level 1 [Member] | Fixed maturities available for sale [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value fixed maturities measured on recurring basis	$ 25,248
Level 1 [Member] | Equity securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	723
Level 1 [Member] | U.S. Government direct, guaranteed, and government-sponsored enterprises [Member] | Fixed maturities available for sale [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value fixed maturities measured on recurring basis	0
Level 1 [Member] | States, municipalities, and political subdivisions [Member] | Fixed maturities available for sale [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value fixed maturities measured on recurring basis	0
Level 1 [Member] | Foreign governments [Member] | Fixed maturities available for sale [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value fixed maturities measured on recurring basis	0
Level 1 [Member] | Corporates [Member] | Fixed maturities available for sale [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value fixed maturities measured on recurring basis	15,180
Level 1 [Member] | Collateralized debt obligations [Member] | Fixed maturities available for sale [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value fixed maturities measured on recurring basis	0
Level 1 [Member] | Other asset-backed securities [Member] | Fixed maturities available for sale [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value fixed maturities measured on recurring basis	0
Level 1 [Member] | Redeemable preferred stocks [Member] | Fixed maturities available for sale [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value fixed maturities measured on recurring basis	10,068
Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total fixed maturities and equity securities	$ 13,443,169
Percent of total	95.50%
Level 2 [Member] | Fixed maturities available for sale [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value fixed maturities measured on recurring basis	$ 13,443,169
Level 2 [Member] | Equity securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	0
Level 2 [Member] | U.S. Government direct, guaranteed, and government-sponsored enterprises [Member] | Fixed maturities available for sale [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value fixed maturities measured on recurring basis	369,757
Level 2 [Member] | States, municipalities, and political subdivisions [Member] | Fixed maturities available for sale [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value fixed maturities measured on recurring basis	1,433,677
Level 2 [Member] | Foreign governments [Member] | Fixed maturities available for sale [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value fixed maturities measured on recurring basis	22,446
Level 2 [Member] | Corporates [Member] | Fixed maturities available for sale [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value fixed maturities measured on recurring basis	11,150,362
Level 2 [Member] | Collateralized debt obligations [Member] | Fixed maturities available for sale [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value fixed maturities measured on recurring basis	0
Level 2 [Member] | Other asset-backed securities [Member] | Fixed maturities available for sale [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value fixed maturities measured on recurring basis	20,251
Level 2 [Member] | Redeemable preferred stocks [Member] | Fixed maturities available for sale [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value fixed maturities measured on recurring basis	446,676
Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total fixed maturities and equity securities	$ 612,641
Percent of total	4.30%
Level 3 [Member] | Fixed maturities available for sale [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value fixed maturities measured on recurring basis	$ 611,782
Level 3 [Member] | Equity securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	859
Level 3 [Member] | U.S. Government direct, guaranteed, and government-sponsored enterprises [Member] | Fixed maturities available for sale [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value fixed maturities measured on recurring basis	0
Level 3 [Member] | States, municipalities, and political subdivisions [Member] | Fixed maturities available for sale [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value fixed maturities measured on recurring basis	0
Level 3 [Member] | Foreign governments [Member] | Fixed maturities available for sale [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value fixed maturities measured on recurring basis	0
Level 3 [Member] | Corporates [Member] | Fixed maturities available for sale [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value fixed maturities measured on recurring basis	539,670
Level 3 [Member] | Collateralized debt obligations [Member] | Fixed maturities available for sale [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value fixed maturities measured on recurring basis	72,112
Level 3 [Member] | Other asset-backed securities [Member] | Fixed maturities available for sale [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value fixed maturities measured on recurring basis	0
Level 3 [Member] | Redeemable preferred stocks [Member] | Fixed maturities available for sale [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 available for sale [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value fixed maturities measured on recurring basis	2,984,078
Financial [Member] | Redeemable preferred stocks [Member] | Fixed maturities available for sale [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value fixed maturities measured on recurring basis	426,861
Financial [Member] | Level 1 [Member] | Corporates [Member] | Fixed maturities available for sale [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] | Level 1 [Member] | Redeemable preferred stocks [Member] | Fixed maturities available for sale [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value fixed maturities measured on recurring basis	10,068
Financial [Member] | Level 2 [Member] | Corporates [Member] | Fixed maturities available for sale [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value fixed maturities measured on recurring basis	2,920,889
Financial [Member] | Level 2 [Member] | Redeemable preferred stocks [Member] | Fixed maturities available for sale [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value fixed maturities measured on recurring basis	416,793
Financial [Member] | Level 3 [Member] | Corporates [Member] | Fixed maturities available for sale [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value fixed maturities measured on recurring basis	63,189
Financial [Member] | Level 3 [Member] | Redeemable preferred stocks [Member] | Fixed maturities available for sale [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 available for sale [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value fixed maturities measured on recurring basis	2,358,166
Utilities [Member] | Redeemable preferred stocks [Member] | Fixed maturities available for sale [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value fixed maturities measured on recurring basis	29,883
Utilities [Member] | Level 1 [Member] | Corporates [Member] | Fixed maturities available for sale [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value fixed maturities measured on recurring basis	15,180
Utilities [Member] | Level 1 [Member] | Redeemable preferred stocks [Member] | Fixed maturities available for sale [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] | Level 2 [Member] | Corporates [Member] | Fixed maturities available for sale [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value fixed maturities measured on recurring basis	2,206,803
Utilities [Member] | Level 2 [Member] | Redeemable preferred stocks [Member] | Fixed maturities available for sale [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value fixed maturities measured on recurring basis	29,883
Utilities [Member] | Level 3 [Member] | Corporates [Member] | Fixed maturities available for sale [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value fixed maturities measured on recurring basis	136,183
Utilities [Member] | Level 3 [Member] | Redeemable preferred stocks [Member] | Fixed maturities available for sale [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 available for sale [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value fixed maturities measured on recurring basis	1,515,448
Energy [Member] | Level 1 [Member] | Corporates [Member] | Fixed maturities available for sale [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] | Level 2 [Member] | Corporates [Member] | Fixed maturities available for sale [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value fixed maturities measured on recurring basis	1,488,583
Energy [Member] | Level 3 [Member] | Corporates [Member] | Fixed maturities available for sale [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value fixed maturities measured on recurring basis	26,865
Other corporate sectors [Member] | Corporates [Member] | Fixed maturities available for sale [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value fixed maturities measured on recurring basis	4,847,520
Other corporate sectors [Member] | Level 1 [Member] | Corporates [Member] | Fixed maturities available for sale [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] | Level 2 [Member] | Corporates [Member] | Fixed maturities available for sale [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value fixed maturities measured on recurring basis	4,534,087
Other corporate sectors [Member] | Level 3 [Member] | Corporates [Member] | Fixed maturities available for sale [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value fixed maturities measured on recurring basis	$ 313,433

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	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	$ 576,779	$ 359,281
Total gains or losses:
Included in realized gains/losses	1,182	15,925
Included in other comprehensive income	9,702	23,953
Acquisitions	38,600	186,365
Sales		(16,050)
Amortization	4,197	4,082
Other	(17,819)	(5,004)
Transfers in and/or out of Level 3	0	0
Ending balance	$ 612,641	$ 568,552
Percent of total fixed maturity and equity securities	4.30%	4.00%
Collateralized debt obligations [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	$ 63,232	$ 58,205
Total gains or losses:
Included in realized gains/losses	0	15,924
Included in other comprehensive income	12,797	3,929
Acquisitions	0	0
Sales		(16,049)
Amortization	4,183	4,072
Other	(8,100)	(3,231)
Transfers in and/or out of Level 3	0	0
Ending balance	$ 72,112	$ 62,850
Percent of total fixed maturity and equity securities	0.50%	0.40%
Corporates [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	$ 512,714	$ 300,300
Total gains or losses:
Included in realized gains/losses	1,182	1
Included in other comprehensive income	(3,121)	19,967
Acquisitions	38,600	186,365
Sales		(1)
Amortization	14	10
Other	(9,719)	(1,773)
Transfers in and/or out of Level 3	0	0
Ending balance	$ 539,670	$ 504,869
Percent of total fixed maturity and equity securities	3.80%	3.60%
Equities [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	$ 833	$ 776
Total gains or losses:
Included in realized gains/losses	0	0
Included in other comprehensive income	26	57
Acquisitions	0	0
Sales		0
Amortization	0	0
Other	0	0
Transfers in and/or out of Level 3	0	0
Ending balance	$ 859	$ 833
Percent of total fixed maturity and equity securities	0.00%	0.00%

Investments - Additional Inform

Investments - Additional Information (Detail) - Issue	Sep. 30, 2015	Dec. 31, 2014
Investments, Debt and Equity Securities [Abstract]
Total issues of fixed-maturities and equities	1,570	1,604

Investments - Schedule of Infor

Investments - Schedule of Information about Investments in Unrealized Loss Position (Detail) - Issue	Sep. 30, 2015	Dec. 31, 2014
Number of issues (Cusip numbers) held:
Less than Twelve Months	368	80
Twelve Months or Longer	66	173
Number of issues (Cusip numbers) held, Total	434	253

Investments - Schedule of Unrea

Investments - Schedule of Unrealized Investment Losses by Class of Investment (Detail) $ in Thousands	Sep. 30, 2015USD ($)
Schedule of Available-for-sale Securities [Line Items]
Fair Value, Less than Twelve Months	$ 3,258,114
Unrealized Loss, Less Than Twelve Months	(266,130)
Fair Value, Twelve Months or Longer	324,521
Unrealized Loss, Twelve Months or Longer	(96,080)
Fair Value, Total	3,582,635
Unrealized Loss Total	(362,210)
Fixed maturities available for sale [Member]
Schedule of Available-for-sale Securities [Line Items]
Fair Value, Less than Twelve Months	3,258,114
Unrealized Loss, Less Than Twelve Months	(266,130)
Fair Value, Twelve Months or Longer	324,521
Unrealized Loss, Twelve Months or Longer	(96,080)
Fair Value, Total	3,582,635
Unrealized Loss Total	(362,210)
Equity securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Fair Value, Less than Twelve Months	0
Unrealized Loss, Less Than Twelve Months	0
Fair Value, Twelve Months or Longer	0
Unrealized Loss, Twelve Months or Longer	0
Fair Value, Total	0
Unrealized Loss Total	0
Investment grade [Member] | Fixed maturities available for sale [Member]
Schedule of Available-for-sale Securities [Line Items]
Fair Value, Less than Twelve Months	3,153,938
Unrealized Loss, Less Than Twelve Months	(235,002)
Fair Value, Twelve Months or Longer	153,557
Unrealized Loss, Twelve Months or Longer	(40,207)
Fair Value, Total	3,307,495
Unrealized Loss Total	(275,209)
Investment grade [Member] | U.S. Government direct, guaranteed, and government-sponsored enterprises [Member] | Fixed maturities available for sale [Member]
Schedule of Available-for-sale Securities [Line Items]
Fair Value, Less than Twelve Months	216,022
Unrealized Loss, Less Than Twelve Months	(5,042)
Fair Value, Twelve Months or Longer	14,920
Unrealized Loss, Twelve Months or Longer	(654)
Fair Value, Total	230,942
Unrealized Loss Total	(5,696)
Investment grade [Member] | States, municipalities, and political subdivisions [Member] | Fixed maturities available for sale [Member]
Schedule of Available-for-sale Securities [Line Items]
Fair Value, Less than Twelve Months	48,097
Unrealized Loss, Less Than Twelve Months	(1,033)
Fair Value, Twelve Months or Longer	1,685
Unrealized Loss, Twelve Months or Longer	(107)
Fair Value, Total	49,782
Unrealized Loss Total	(1,140)
Investment grade [Member] | Foreign governments [Member] | Fixed maturities available for sale [Member]
Schedule of Available-for-sale Securities [Line Items]
Fair Value, Less than Twelve Months	4,574
Unrealized Loss, Less Than Twelve Months	(4)
Fair Value, Twelve Months or Longer	0
Unrealized Loss, Twelve Months or Longer	0
Fair Value, Total	4,574
Unrealized Loss Total	(4)
Investment grade [Member] | Corporates [Member] | Fixed maturities available for sale [Member]
Schedule of Available-for-sale Securities [Line Items]
Fair Value, Less than Twelve Months	2,885,245
Unrealized Loss, Less Than Twelve Months	(228,923)
Fair Value, Twelve Months or Longer	136,952
Unrealized Loss, Twelve Months or Longer	(39,446)
Fair Value, Total	3,022,197
Unrealized Loss Total	(268,369)
Investment grade [Member] | Financial [Member] | Corporates [Member] | Fixed maturities available for sale [Member]
Schedule of Available-for-sale Securities [Line Items]
Fair Value, Less than Twelve Months	283,220
Unrealized Loss, Less Than Twelve Months	(11,605)
Fair Value, Twelve Months or Longer	0
Unrealized Loss, Twelve Months or Longer	0
Fair Value, Total	283,220
Unrealized Loss Total	(11,605)
Investment grade [Member] | Utilities [Member] | Corporates [Member] | Fixed maturities available for sale [Member]
Schedule of Available-for-sale Securities [Line Items]
Fair Value, Less than Twelve Months	403,693
Unrealized Loss, Less Than Twelve Months	(21,681)
Fair Value, Twelve Months or Longer	0
Unrealized Loss, Twelve Months or Longer	0
Fair Value, Total	403,693
Unrealized Loss Total	(21,681)
Investment grade [Member] | Energy [Member] | Corporates [Member] | Fixed maturities available for sale [Member]
Schedule of Available-for-sale Securities [Line Items]
Fair Value, Less than Twelve Months	650,698
Unrealized Loss, Less Than Twelve Months	(69,271)
Fair Value, Twelve Months or Longer	92,025
Unrealized Loss, Twelve Months or Longer	(31,189)
Fair Value, Total	742,723
Unrealized Loss Total	(100,460)
Investment grade [Member] | Other corporate sectors [Member] | Corporates [Member] | Fixed maturities available for sale [Member]
Schedule of Available-for-sale Securities [Line Items]
Fair Value, Less than Twelve Months	1,547,634
Unrealized Loss, Less Than Twelve Months	(126,366)
Fair Value, Twelve Months or Longer	44,927
Unrealized Loss, Twelve Months or Longer	(8,257)
Fair Value, Total	1,592,561
Unrealized Loss Total	(134,623)
Below investment grade [Member] | Fixed maturities available for sale [Member]
Schedule of Available-for-sale Securities [Line Items]
Fair Value, Less than Twelve Months	104,176
Unrealized Loss, Less Than Twelve Months	(31,128)
Fair Value, Twelve Months or Longer	170,964
Unrealized Loss, Twelve Months or Longer	(55,873)
Fair Value, Total	275,140
Unrealized Loss Total	(87,001)
Below investment grade [Member] | States, municipalities, and political subdivisions [Member] | Fixed maturities available for sale [Member]
Schedule of Available-for-sale Securities [Line Items]
Fair Value, Less than Twelve Months	0
Unrealized Loss, Less Than Twelve Months	0
Fair Value, Twelve Months or Longer	321
Unrealized Loss, Twelve Months or Longer	(234)
Fair Value, Total	321
Unrealized Loss Total	(234)
Below investment grade [Member] | Corporates [Member] | Fixed maturities available for sale [Member]
Schedule of Available-for-sale Securities [Line Items]
Fair Value, Less than Twelve Months	104,176
Unrealized Loss, Less Than Twelve Months	(31,128)
Fair Value, Twelve Months or Longer	136,506
Unrealized Loss, Twelve Months or Longer	(42,615)
Fair Value, Total	240,682
Unrealized Loss Total	(73,743)
Below investment grade [Member] | Collateralized debt obligations [Member] | Fixed maturities available for sale [Member]
Schedule of Available-for-sale Securities [Line Items]
Fair Value, Less than Twelve Months	0
Unrealized Loss, Less Than Twelve Months	0
Fair Value, Twelve Months or Longer	11,407
Unrealized Loss, Twelve Months or Longer	(8,593)
Fair Value, Total	11,407
Unrealized Loss Total	(8,593)
Below investment grade [Member] | Redeemable preferred stocks [Member] | Fixed maturities available for sale [Member]
Schedule of Available-for-sale Securities [Line Items]
Fair Value, Less than Twelve Months	0
Unrealized Loss, Less Than Twelve Months	0
Fair Value, Twelve Months or Longer	22,730
Unrealized Loss, Twelve Months or Longer	(4,431)
Fair Value, Total	22,730
Unrealized Loss Total	(4,431)
Below investment grade [Member] | Financial [Member] | Corporates [Member] | Fixed maturities available for sale [Member]
Schedule of Available-for-sale Securities [Line Items]
Fair Value, Less than Twelve Months	0
Unrealized Loss, Less Than Twelve Months	0
Fair Value, Twelve Months or Longer	72,564
Unrealized Loss, Twelve Months or Longer	(33,229)
Fair Value, Total	72,564
Unrealized Loss Total	(33,229)
Below investment grade [Member] | Financial [Member] | Redeemable preferred stocks [Member] | Fixed maturities available for sale [Member]
Schedule of Available-for-sale Securities [Line Items]
Fair Value, Less than Twelve Months	0
Unrealized Loss, Less Than Twelve Months	0
Fair Value, Twelve Months or Longer	22,730
Unrealized Loss, Twelve Months or Longer	(4,431)
Fair Value, Total	22,730
Unrealized Loss Total	(4,431)
Below investment grade [Member] | Energy [Member] | Corporates [Member] | Fixed maturities available for sale [Member]
Schedule of Available-for-sale Securities [Line Items]
Fair Value, Less than Twelve Months	42,319
Unrealized Loss, Less Than Twelve Months	(8,391)
Fair Value, Twelve Months or Longer	8,106
Unrealized Loss, Twelve Months or Longer	(2,920)
Fair Value, Total	50,425
Unrealized Loss Total	(11,311)
Below investment grade [Member] | Other corporate sectors [Member] | Corporates [Member] | Fixed maturities available for sale [Member]
Schedule of Available-for-sale Securities [Line Items]
Fair Value, Less than Twelve Months	61,857
Unrealized Loss, Less Than Twelve Months	(22,737)
Fair Value, Twelve Months or Longer	55,836
Unrealized Loss, Twelve Months or Longer	(6,466)
Fair Value, Total	117,693
Unrealized Loss Total	$ (29,203)

Supplemental Information abou33

Supplemental Information about Changes to Accumulated Other Comprehensive Income - Schedule of Analysis of Change in Balance by Component of Accumulated Other Comprehensive Income (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Accumulated Other Comprehensive Income, Net of Tax [Roll Forward]
Accumulated other comprehensive income (loss), beginning balance	$ 555,319	$ 887,974	$ 997,452	$ 210,981
Other comprehensive income (loss) before reclassifications, net of tax	(53,238)	(6,105)	(496,946)	681,672
Reclassifications, net of tax	(2,252)	958	(677)	(9,826)
Other comprehensive income (loss)	(55,490)	(5,147)	(497,623)	671,846
Accumulated other comprehensive income (loss), ending balance	499,829	882,827	499,829	882,827
Available for Sale Assets [Member]
Accumulated Other Comprehensive Income, Net of Tax [Roll Forward]
Accumulated other comprehensive income (loss), beginning balance	649,973	933,015	1,090,273	256,196
Other comprehensive income (loss) before reclassifications, net of tax	(48,306)	(1,991)	(485,441)	688,958
Reclassifications, net of tax	(4,621)	(711)	(7,786)	(14,841)
Other comprehensive income (loss)	(52,927)	(2,702)	(493,227)	674,117
Accumulated other comprehensive income (loss), ending balance	597,046	930,313	597,046	930,313
Deferred Acquisition Costs [Member]
Accumulated Other Comprehensive Income, Net of Tax [Roll Forward]
Accumulated other comprehensive income (loss), beginning balance	(8,415)	(11,455)	(10,758)	(6,728)
Other comprehensive income (loss) before reclassifications, net of tax	934	450	3,277	(4,277)
Reclassifications, net of tax	0	0	0	0
Other comprehensive income (loss)	934	450	3,277	(4,277)
Accumulated other comprehensive income (loss), ending balance	(7,481)	(11,005)	(7,481)	(11,005)
Foreign Exchange [Member]
Accumulated Other Comprehensive Income, Net of Tax [Roll Forward]
Accumulated other comprehensive income (loss), beginning balance	8,353	26,124	17,386	24,866
Other comprehensive income (loss) before reclassifications, net of tax	(5,867)	(4,566)	(14,900)	(3,308)
Reclassifications, net of tax	0	0	0	0
Other comprehensive income (loss)	(5,867)	(4,566)	(14,900)	(3,308)
Accumulated other comprehensive income (loss), ending balance	2,486	21,558	2,486	21,558
Pension Adjustments [Member]
Accumulated Other Comprehensive Income, Net of Tax [Roll Forward]
Accumulated other comprehensive income (loss), beginning balance	(94,592)	(59,710)	(99,449)	(63,353)
Other comprehensive income (loss) before reclassifications, net of tax	1	2	118	299
Reclassifications, net of tax	2,369	1,669	7,109	5,015
Other comprehensive income (loss)	2,370	1,671	7,227	5,314
Accumulated other comprehensive income (loss), ending balance	$ (92,222)	$ (58,039)	$ (92,222)	$ (58,039)

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		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Unrealized investment gains (losses) on available for sale assets:
Realized (gains) losses	$ (5,140)	$ 1,483	$ (7,872)	$ (15,713)
Amortization of (discount) premium	(193,213)	(189,588)	(579,632)	(567,569)
Tax	71,358	64,639	191,420	192,209
Net income	(145,386)	(132,412)	(394,144)	(396,191)
Pension adjustments:
Total reclassifications (after tax)	(2,252)	958	(677)	(9,826)
Available for Sale Assets [Member]
Pension adjustments:
Total reclassifications (after tax)	(4,621)	(711)	(7,786)	(14,841)
Amortization of prior service cost
Pension adjustments:
Pension adjustments reclassified out of accumulated other comprehensive income	81	529	244	1,586
Amortization of actuarial gain (loss)
Pension adjustments:
Pension adjustments reclassified out of accumulated other comprehensive income	3,563	2,038	10,691	6,130
Pension adjustments [Member]
Pension adjustments:
Pension adjustments reclassified out of accumulated other comprehensive income	3,644	2,567	10,935	7,716
Tax	(1,275)	(898)	(3,826)	(2,701)
Total reclassifications (after tax)	2,369	1,669	7,109	5,015
Reclassification out of Accumulated Other Comprehensive Income [Member] | Unrealized investment gains (losses) on available for sale assets Member]
Unrealized investment gains (losses) on available for sale assets:
Realized (gains) losses	(5,540)	1,261	(7,138)	(15,935)
Amortization of (discount) premium	(1,569)	(2,354)	(4,840)	(6,898)
Total before tax	(7,109)	(1,093)	(11,978)	(22,833)
Tax	2,488	382	4,192	7,992
Reclassification out of Accumulated Other Comprehensive Income [Member] | Available for Sale Assets [Member]
Unrealized investment gains (losses) on available for sale assets:
Net income	$ (4,621)	$ (711)	$ (7,786)	$ (14,841)

Business Segments - Adjustments

Business Segments - Adjustments for Difference in Interim Medicare Part D Results for Segment Purposes and GAAP for Medicare Part D (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Segment Reporting Disclosure [Line Items]
Benefit costs deferred	$ 527,340	$ 535,532	$ 1,711,530	$ 1,677,256
Government risk-sharing premium adjustment	$ (799,714)	$ (785,715)	(2,465,429)	(2,404,601)
Pre-tax addition to segment interim period income			20,971	16,850
After tax amount			13,631	10,952
Medicare Part D [Member]
Segment Reporting Disclosure [Line Items]
After tax amount			13,631	10,952
Adjustments [Member]
Segment Reporting Disclosure [Line Items]
Benefit costs deferred			11,649	53,561
Government risk-sharing premium adjustment			9,322	(28,532)
Adjustments [Member] | Medicare Part D [Member]
Segment Reporting Disclosure [Line Items]
Benefit costs deferred			11,649	45,382
Government risk-sharing premium adjustment			9,322	(28,532)
Pre-tax addition to segment interim period income			$ 20,971	$ 16,850

Business Segments - Reconciliat

Business Segments - Reconciliation of Health Premium Included in the Segment Analysis (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Premium per segment analysis:
Health premium	$ 280,744	$ 293,879	$ 913,001	$ 931,533
Health premium, % Change			(2.00%)
Medicare Part D premium [Member]
Premium per segment analysis:
Health premium			$ 232,102	258,243
Health premium, % Change			(10.00%)
Other health premium [Member]
Premium per segment analysis:
Health premium			$ 690,221	644,758
Health premium, % Change			7.00%
Part D risk sharing adjustment [Member]
Premium per segment analysis:
Health premium			$ (9,322)	$ 28,532
Health premium, % Change			(133.00%)

Business Segments - Additional

Business Segments - Additional Information (Detail) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
Segment Reporting Disclosure [Line Items]
Litigation settlement amount not related to insurance operations		$ 2,337
Administrative settlement expense		8,179
Administrative settlement, after tax	$ 0	5,316
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 not 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		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Revenue:
Premium	$ 799,714	$ 785,715	$ 2,465,429	$ 2,404,601
Net investment income	193,213	189,588	579,632	567,569
Other income	692	668	2,052	1,812
Total revenue			3,047,113	2,973,982
Expenses:
Policy benefits	527,340	535,532	1,711,530	1,677,256
Required interest on reserves			0	0
Required interest on DAC			0	0
Amortization of acquisition costs	112,523	103,834	336,690	313,128
Commissions, premium taxes, and non-deferred acquisition costs	65,127	63,636	192,413	185,034
Insurance administrative expense			142,829	137,255
Parent expense			6,662	6,284
Stock compensation expense			21,877	25,219
Interest expense	19,246	19,033	57,420	57,119
Total benefits and expenses	782,015	777,437	2,469,421	2,401,295
Subtotal			577,692	572,687
Nonoperating items			20,971	27,366
Measure of segment profitability (pretax)			598,663	600,053
Deduct applicable income taxes			(196,005)	(196,288)
Net operating income			402,658	403,765
Add (deduct) realized investment gains (losses)			7,872	15,713
Deduct Part D adjustment			(20,971)	(16,850)
Deduct legal settlement expenses				(2,337)
Deduct administrative settlements				(8,179)
Income before income taxes	$ 216,744	$ 197,051	585,564	588,400
Operating Segments [Member] | Life [Member]
Revenue:
Premium			1,552,309	1,472,734
Total revenue			1,552,309	1,472,734
Expenses:
Policy benefits			1,029,261	964,305
Required interest on reserves			(412,264)	(395,595)
Required interest on DAC			129,339	125,758
Amortization of acquisition costs			265,641	251,954
Commissions, premium taxes, and non-deferred acquisition costs			115,452	105,724
Total benefits and expenses			1,127,429	1,052,146
Subtotal			424,880	420,588
Measure of segment profitability (pretax)			424,880	420,588
Operating Segments [Member] | Health [Member]
Revenue:
Premium			690,221	644,758
Total revenue			690,221	644,758
Expenses:
Policy benefits			448,539	414,607
Required interest on reserves			(51,450)	(48,018)
Required interest on DAC			17,058	16,823
Amortization of acquisition costs			61,858	53,088
Commissions, premium taxes, and non-deferred acquisition costs			60,820	59,787
Total benefits and expenses			536,825	496,287
Subtotal			153,396	148,471
Measure of segment profitability (pretax)			153,396	148,471
Operating Segments [Member] | Medicare Part D [Member]
Revenue:
Premium			232,102	258,243
Total revenue			232,102	258,243
Expenses:
Policy benefits			$ 192,634	$ 213,184
Required interest on reserves
Required interest on DAC			$ 673	$ 534
Amortization of acquisition costs			2,649	2,127
Commissions, premium taxes, and non-deferred acquisition costs			16,258	19,664
Total benefits and expenses			212,214	235,509
Subtotal			19,888	22,734
Measure of segment profitability (pretax)			19,888	22,734
Operating Segments [Member] | Annuity [Member]
Revenue:
Premium			119	334
Total revenue			119	334
Expenses:
Policy benefits			29,447	31,599
Required interest on reserves			(40,084)	(41,576)
Required interest on DAC			885	1,120
Amortization of acquisition costs			6,542	5,959
Commissions, premium taxes, and non-deferred acquisition costs			32	37
Total benefits and expenses			(3,178)	(2,861)
Subtotal			3,297	3,195
Measure of segment profitability (pretax)			3,297	3,195
Operating Segments [Member] | Investment [Member]
Revenue:
Net investment income			579,632	567,569
Total revenue			579,632	567,569
Expenses:
Required interest on reserves			503,798	485,189
Required interest on DAC			(147,955)	(144,235)
Interest expense			57,420	57,119
Total benefits and expenses			413,263	398,073
Subtotal			166,369	169,496
Measure of segment profitability (pretax)			166,369	169,496
Operating Segments [Member] | Other & Corporate [Member]
Revenue:
Other income			2,201	1,990
Total revenue			2,201	1,990
Expenses:
Insurance administrative expense			142,829	134,918
Parent expense			6,662	6,284
Stock compensation expense			21,877	25,219
Total benefits and expenses			171,368	166,421
Subtotal			(169,167)	(164,431)
Measure of segment profitability (pretax)			(169,167)	(164,431)
Adjustments [Member]
Revenue:
Premium			$ (9,322)	$ 28,532
Net investment income
Other income			$ (149)	$ (178)
Total revenue			(9,471)	28,354
Expenses:
Policy benefits			11,649	$ 53,561
Amortization of acquisition costs
Commissions, premium taxes, and non-deferred acquisition costs			(149)	$ (178)
Insurance administrative expense				$ 2,337
Parent expense
Total benefits and expenses			11,500	$ 55,720
Subtotal			(20,971)	(27,366)
Nonoperating items			20,971	27,366
Measure of segment profitability (pretax)			0	0
Adjustments [Member] | Medicare Part D [Member]
Revenue:
Premium			(9,322)	28,532
Expenses:
Policy benefits			11,649	45,382
Deduct Part D adjustment			$ (20,971)	$ (16,850)

Business Segments - Analysis of

Business Segments - Analysis of Profitability by Segment (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Segment Reporting Information [Line Items]
Pretax operating income			$ 598,663	$ 600,053
Applicable taxes			(196,005)	(196,288)
Net operating income			402,658	403,765
Pretax operating income, increase (decrease)			(1,390)
Applicable taxes, increase (decrease)			283
Net income, increase (decrease)			$ (1,107)
Pretax operating income, % change			0.00%
Other income	$ 692	$ 668	$ 2,052	1,812
Applicable taxes, % change			0.00%
Net operating income, % change			0.00%
Reconciling items, net of tax:
Realized gains (losses)-Investments			$ 5,117	10,213
Part D adjustment			(13,631)	(10,952)
Administrative settlements			0	(5,316)
Legal settlement expense			0	(1,519)
Net income	$ 145,386	$ 132,412	394,144	396,191
Realized gains (losses) - Investments, increase (decrease)			(5,096)
Part D adjustment, increase (decrease)			(2,679)
Administrative settlements, increase (decrease)			5,316
Legal settlement expense, increase (decrease)			1,519
Net income, increase (decrease)			$ (2,047)
Segment Reporting Reconciling Items Realized Gains Losses On Investments Net Of Tax Increase Decrease Percentage			(50.00%)
Part D Adjustment, Net Of Tax, Increase (Decrease) Percentage			24.00%
Segment Reporting Reconciling Items Administrative Settlement Increase Decrease Percentage			(100.00%)
Segment Reporting Reconciling Items Net Proceeds Or Cost From Legal Settlements Net Of Tax Increase Decrease Percentage			(100.00%)
Net income, % change			(1.00%)
Medicare Part D [Member]
Reconciling items, net of tax:
Part D adjustment			$ (13,631)	(10,952)
Operating Segments [Member] | Life [Member]
Segment Reporting Information [Line Items]
Pretax operating income			424,880	420,588
Pretax operating income, increase (decrease)			$ 4,292
Pretax operating income, % change			1.00%
Operating Segments [Member] | Health [Member]
Segment Reporting Information [Line Items]
Pretax operating income			$ 153,396	148,471
Pretax operating income, increase (decrease)			$ 4,925
Pretax operating income, % change			3.00%
Operating Segments [Member] | Medicare Part D [Member]
Segment Reporting Information [Line Items]
Pretax operating income			$ 19,888	22,734
Pretax operating income, increase (decrease)			$ (2,846)
Pretax operating income, % change			(13.00%)
Operating Segments [Member] | Annuity [Member]
Segment Reporting Information [Line Items]
Pretax operating income			$ 3,297	3,195
Pretax operating income, increase (decrease)			$ 102
Pretax operating income, % change			3.00%
Operating Segments [Member] | Investment [Member]
Segment Reporting Information [Line Items]
Pretax operating income			$ 166,369	169,496
Pretax operating income, increase (decrease)			$ (3,127)
Pretax operating income, % change			(2.00%)
Operating Segments [Member] | Other and corporate [Member]
Segment Reporting Information [Line Items]
Pretax operating income			$ (169,167)	(164,431)
Other income			2,201	1,990
Operating Segments [Member] | Other and corporate [Member] | Other income [Member]
Segment Reporting Information [Line Items]
Pretax operating income			2,201	1,990
Pretax operating income, increase (decrease)			$ 211
Pretax operating income, % change			11.00%
Operating Segments [Member] | Other and corporate [Member] | Administrative expense [Member]
Segment Reporting Information [Line Items]
Pretax operating income			$ (142,829)	(134,918)
Pretax operating income, increase (decrease)			$ (7,911)
Pretax operating income, % change			6.00%
Operating Segments [Member] | Other and corporate [Member] | Corporate [Member]
Segment Reporting Information [Line Items]
Pretax operating income			$ (28,539)	$ (31,503)
Pretax operating income, increase (decrease)			$ 2,964
Pretax operating income, % change			(9.00%)

Adoption of New Accounting St40

Adoption of New Accounting Standards (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Net investment income	$ 193,213	$ 189,588	$ 579,632	$ 567,569
Total revenue	998,759	974,488	3,054,985	2,989,695
Income before income taxes	216,744	197,051	585,564	588,400
Income taxes	(71,358)	(64,639)	(191,420)	(192,209)
Net income	$ 145,386	132,412	$ 394,144	396,191
As previously reported [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Net investment income		182,101		545,978
Total revenue		967,001		2,968,104
Income before income taxes		189,564		566,809
Income taxes		(57,152)		(170,618)
Net income		132,412		396,191
Adjustments [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Net investment income		7,487		21,591
Total revenue		7,487		21,591
Income before income taxes		7,487		21,591
Income taxes		(7,487)		(21,591)
Net income		$ 0		$ 0