Pruco Life Insurance 10-Q 13 Nov 18 2018 Q3 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	9 Months Ended
	Sep. 30, 2018	Nov. 13, 2018
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Sep. 30, 2018
Document Fiscal Year Focus	2,018
Document Fiscal Period Focus	Q3
Entity Registrant Name	PRUCO LIFE INSURANCE CO
Entity Central Index Key	777,917
Current Fiscal Year End Date	--12-31
Entity Filer Category	Non-accelerated Filer
Entity Emerging Growth Company	false
Entity Small Business	false
Entity Common Stock, Shares Outstanding		250,000

Unaudited Interim Consolidated

Unaudited Interim Consolidated Statements of Financial Position - USD ($) $ in Thousands		Sep. 30, 2018	Dec. 31, 2017
ASSETS
Fixed maturities, available-for-sale, at fair value (amortized cost: 2018 – $5,246,007; 2017 – $4,941,944)		$ 5,234,708	$ 5,223,302
Fixed maturities, trading, at fair value (amortized cost: 2018 – $38,279; 2017 – $38,279)	[1]	36,688	38,793
Equity securities, at fair value (cost: 2018 – $37,691; 2017 – $32,694)	[1]	43,545	40,610
Policy loans		1,217,608	1,161,101
Short-term investments		456	1,339
Commercial mortgage and other loans		1,177,395	1,083,419
Other invested assets (includes $76,167 and $726 measured at fair value at September 30, 2018 and December 31, 2017, respectively)	[1]	333,382	263,074
Total investments		8,043,782	7,811,638
Cash and cash equivalents		255,256	212,569
Deferred policy acquisition costs		1,530,072	1,376,211
Accrued investment income		87,362	82,341
Reinsurance recoverables		31,430,148	32,521,264
Receivables from parent and affiliates		312,256	300,116
Income Taxes Receivable		8,424	0
Other assets		387,078	465,467
Separate account assets		130,506,948	129,655,734
TOTAL ASSETS		172,561,326	172,425,340
LIABILITIES
Policyholders’ account balances		21,597,661	20,036,134
Future policy benefits		16,498,119	18,561,550
Cash collateral for loaned securities		7,585	33,169
Income taxes payable		0	36,323
Short-term debt to affiliates		1,744	0
Payables to parent and affiliates		166,136	228,210
Other liabilities		1,084,739	1,038,972
Separate account liabilities		130,506,948	129,655,734
TOTAL LIABILITIES		169,862,932	169,590,092
COMMITMENTS AND CONTINGENT LIABILITIES
EQUITY
Common stock ($10 par value; 1,000,000 shares authorized; 250,000 shares issued and outstanding)		2,500	2,500
Additional paid-in capital		1,146,592	1,141,092
Retained earnings		1,570,052	1,526,310
Accumulated other comprehensive income (loss)		(20,750)	165,346
TOTAL EQUITY		2,698,394	2,835,248
TOTAL LIABILITIES AND EQUITY		$ 172,561,326	$ 172,425,340
[1]	Prior period amounts have been reclassified to conform to current period presentation. See "Adoption of ASU 2016-01" in Note 2 for details

Unaudited Interim Consolidate_2

Unaudited Interim Consolidated Statements of Financial Position (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Statement of Financial Position [Abstract]
Fixed maturities, available for sale, amortized cost	$ 5,246,007	$ 4,941,944
Fixed maturities, trading, amortized cost	38,279	38,279
Equity securities, cost	37,691	32,694
Other invested assets, at fair value	$ 76,167	$ 726
Common stock, par value (in dollars per share)	$ 10	$ 10
Common stock, shares authorized	1,000,000	1,000,000
Common stock, shares issued	250,000	250,000
Common stock, shares outstanding	250,000	250,000

Unaudited Interim Consolidate_3

Unaudited Interim Consolidated Statements of Operations and Comprehensive Income (Loss) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
REVENUES
Premiums	$ 14,151	$ 15,124	$ 36,969	$ 37,958
Policy charges and fee income	106,926	129,105	405,085	140,940
Net investment income	86,186	86,522	245,750	267,178
Asset administration fees	3,727	4,555	10,744	13,132
Other income	21,763	18,020	57,137	48,145
Realized investment gains (losses), net:
Other-than-temporary impairments on fixed maturity securities	(1,226)	(143)	(1,877)	(6,034)
Other-than-temporary impairments on fixed maturity securities transferred to other comprehensive income	0	0	0	366
Other realized investment gains (losses), net	(48,197)	(275,043)	(133,478)	(25,507)
Total realized investment gains (losses), net	(49,423)	(275,186)	(135,355)	(31,175)
TOTAL REVENUES	183,330	(21,860)	620,330	476,178
BENEFITS AND EXPENSES
Policyholders’ benefits	9,823	54,944	102,000	(58,235)
Interest credited to policyholders’ account balances	44,709	38,196	128,062	128,923
Amortization of deferred policy acquisition costs	14,738	19,313	103,199	76,768
General, administrative and other expenses	97,490	81,543	237,949	187,947
TOTAL BENEFITS AND EXPENSES	166,760	193,996	571,210	335,403
INCOME (LOSS) FROM OPERATIONS BEFORE INCOME TAXES AND EQUITY IN EARNINGS OF OPERATING JOINT VENTURE	16,570	(215,856)	49,120	140,775
Income tax expense (benefit)	(2,760)	(38,660)	(18,471)	(69,098)
INCOME (LOSS) FROM OPERATIONS BEFORE EQUITY IN EARNINGS OF OPERATING JOINT VENTURE	19,330	(177,196)	67,591	209,873
Equity in earnings of operating joint venture, net of taxes	(605)	0	(1,336)	0
NET INCOME (LOSS)	18,725	(177,196)	66,255	209,873
Other comprehensive income (loss), before tax:
Foreign currency translation adjustments	(5,789)	75	(12,379)	224
Net unrealized investment gains (losses)	(32,729)	(10,005)	(259,783)	119,311
Total	(38,518)	(9,930)	(272,162)	119,535
Less: Income tax expense (benefit) related to other comprehensive income (loss)	(8,093)	(3,475)	(57,156)	41,837
Other comprehensive income (loss), net of tax	(30,425)	(6,455)	(215,006)	77,698
COMPREHENSIVE INCOME (LOSS)	$ (11,700)	$ (183,651)	$ (148,751)	$ 287,571

Unaudited Interim Consolidate_4

Unaudited Interim Consolidated Statements of Equity - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Income (Loss)	Total Equity
Beginning Balance at Dec. 31, 2016		$ 2,500	$ 986,062	$ 1,448,517	$ 70,975	$ 2,508,054
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Contributed capital			153,500			153,500
Contributed (distributed) capital-parent/child asset transfers			875			875
Comprehensive income (loss):
Net income (loss)	$ 209,873			209,873		209,873
Other comprehensive income (loss), net of tax	77,698				77,698	77,698
Total comprehensive income (loss)						287,571
Ending Balance at Sep. 30, 2017		2,500	1,140,437	1,658,390	148,673	2,950,000
Beginning Balance at Dec. 31, 2017		2,500	1,141,092	1,526,310	165,346	2,835,248
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Contributed capital			5,500			5,500
Comprehensive income (loss):
Net income (loss)	66,255			66,255		66,255
Other comprehensive income (loss), net of tax	$ (215,006)				(215,006)	(215,006)
Total comprehensive income (loss)						(148,751)
Ending Balance at Sep. 30, 2018		$ 2,500	$ 1,146,592	1,570,052	(20,750)	2,698,394
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cumulative effect of adoption | ASU 2016-01				7,936	(1,539)	6,397
Cumulative effect of adoption | ASU 2018-02				$ (30,449)	$ 30,449	$ 0

Unaudited Interim Consolidate_5

Unaudited Interim Consolidated Statements of Cash Flows - USD ($) $ in Thousands		9 Months Ended
		Sep. 30, 2018	Sep. 30, 2017
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income (loss)		$ 66,255	$ 209,873
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Policy charges and fee income		(97,276)	(124,187)
Interest credited to policyholders’ account balances		128,062	128,923
Realized investment (gains) losses, net		135,355	31,175
Amortization and other non-cash items		(35,790)	(46,435)
Change in:
Future policy benefits		1,392,199	1,455,418
Reinsurance recoverables		(1,304,316)	(1,564,329)
Accrued investment income		(5,021)	(2,828)
Net payables to/receivables from parent and affiliates		(74,887)	(33,543)
Deferred policy acquisition costs		(130,401)	(116,519)
Income taxes		10,708	53,472
Derivatives, net		4,552	3,945
Other, net		(70,025)	90,529
Cash flows from (used in) operating activities		19,415	85,494
Proceeds from the sale/maturity/prepayment of:
Fixed maturities, available-for-sale		368,906	875,580
Fixed maturities, trading	[1]	0	214
Equity securities	[1]	218	510
Policy loans		113,736	107,002
Ceded policy loans		(10,523)	(11,273)
Short-term investments		12,580	68,247
Commercial mortgage and other loans		57,568	112,174
Other invested assets	[1]	11,997	10,913
Payments for the purchase/origination of:
Fixed maturities, available-for-sale		(663,519)	(1,038,434)
Fixed maturities, trading	[1]	0	(15,019)
Equity securities	[1]	(5,039)	(5,000)
Policy loans		(135,070)	(84,190)
Ceded policy loans		12,619	13,309
Short-term investments		(13,032)	(32,316)
Commercial mortgage and other loans		(158,163)	(164,199)
Other invested assets	[1]	(53,428)	(22,255)
Notes receivable from parent and affiliates, net		4,594	5,339
Derivatives, net		2,947	(17,899)
Other, net		(4,916)	(153,367)
Cash flows from (used in) investing activities		(458,525)	(350,664)
CASH FLOWS FROM FINANCING ACTIVITIES:
Policyholders’ account deposits		3,572,484	3,325,383
Ceded policyholders’ account deposits		(2,336,157)	(2,256,796)
Policyholders’ account withdrawals		(2,173,295)	(2,029,593)
Ceded policyholders’ account withdrawals		1,445,661	1,263,110
Net change in securities sold under agreement to repurchase and cash collateral for loaned securities		(25,584)	(128,265)
Contributed capital		0	148,500
Contributed (distributed) capital - parent/child asset transfers		0	1,346
Net change in financing arrangements (maturities 90 days or less)		1,744	0
Drafts outstanding		(3,056)	41,654
Cash flows from (used in) financing activities		481,797	365,339
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS		42,687	100,169
CASH AND CASH EQUIVALENTS, BEGINNING OF YEAR		212,569	96,157
CASH AND CASH EQUIVALENTS, END OF PERIOD		$ 255,256	$ 196,326
[1]	Prior period amounts have been reclassified to conform to current period presentation. See Note 2 for details.

Business and Basis of Presentat

Business and Basis of Presentation	9 Months Ended
	Sep. 30, 2018
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Business and Basis of Presentation	BUSINESS AND BASIS OF PRESENTATION Pruco Life Insurance Company (“Pruco Life”) is a wholly-owned subsidiary of The Prudential Insurance Company of America (“Prudential Insurance”), which in turn is a direct wholly-owned subsidiary of Prudential Financial, Inc. (“Prudential Financial”). Pruco Life is a stock life insurance company organized in 1971 under the laws of the State of Arizona. It is licensed to sell life insurance and annuities in the District of Columbia, Guam and in all states except New York, and sells such products primarily through affiliated and unaffiliated distributors. Pruco Life has two subsidiaries, including one wholly-owned insurance subsidiary, Pruco Life Insurance Company of New Jersey (“PLNJ”) and one indirect subsidiary formed in 2009 for the purpose of holding certain commercial loan and other investments. Pruco Life and its subsidiaries are together referred to as the "Company", "we" or "our" and all financial information is shown on a consolidated basis. PLNJ is a stock life insurance company organized in 1982 under the laws of the state of New Jersey. It is licensed to sell life insurance and annuities in New Jersey and New York only. Variable Annuities Recapture Through March 31, 2016, the Company reinsured the majority of its variable annuity living benefit guarantees to an affiliated reinsurance company, Pruco Reinsurance, Ltd. ("Pruco Re"). Effective April 1, 2016, the Company recaptured the risks related to its variable annuity living benefit guarantees that were previously reinsured to Pruco Re. In addition, the Company reinsured variable annuity base contracts, along with the living benefit guarantees, to Prudential Annuities Life Assurance Corporation ("PALAC"), excluding the PLNJ business, which was reinsured to Prudential Insurance, in each case under coinsurance and modified coinsurance agreements. These reinsurance agreements cover new and in force business and exclude business reinsured externally. The product risks related to the reinsured business are being managed in PALAC and Prudential Insurance, as applicable. In addition, the living benefit hedging program related to the reinsured living benefit guarantees is being managed within PALAC and Prudential Insurance, as applicable. These series of transactions are collectively referred to as the "Variable Annuities Recapture". Basis of Presentation The Unaudited Interim Consolidated Financial Statements have been prepared in accordance with accounting principles generally accepted in the United States of America (“U.S. GAAP”) on a basis consistent with reporting interim financial information in accordance with instructions to Form 10-Q and Article 10 of Regulation S-X of the Securities and Exchange Commission (“SEC”). Intercompany balances and transactions have been eliminated. In the opinion of management, all adjustments necessary for a fair statement of the financial position and results of operations have been made. All such adjustments are of a normal, recurring nature. Interim results are not necessarily indicative of the results that may be expected for the full year. These financial statements should be read in conjunction with the Company’s Consolidated Financial Statements included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2017 . Use of Estimates The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities as of the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates. The most significant estimates include those used in determining deferred policy acquisition costs and related amortization; amortization of deferred sales inducements; valuation of investments including derivatives and the recognition of other-than-temporary impairments (“OTTI”); future policy benefits including guarantees; reinsurance recoverables; provision for income taxes and valuation of deferred tax assets; and accruals for contingent liabilities, including estimates for losses in connection with unresolved legal and regulatory matters. Revision to Prior Period Consolidated Financial Statements The Company identified an error in the calculation of reserves for certain individual life products that impacted several line items within previously issued consolidated financial statements. Prior period amounts have been revised in the financial statements and related disclosures to correct this error. Management evaluated these adjustments and concluded they were not material to any previously reported quarterly or annual financial statements. See Note 11 for a more detailed description of the revisions and for comparisons of amounts previously reported to the revised amounts. Reclassifications Certain amounts in prior periods have been reclassified to conform to the current period presentation.

Significant Accounting Policies

Significant Accounting Policies and Pronouncements	9 Months Ended
	Sep. 30, 2018
Accounting Policies [Abstract]
Significant Accounting Policies and Pronouncements	SIGNIFICANT ACCOUNTING POLICIES AND PRONOUNCEMENTS Recent Accounting Pronouncements Changes to U.S. GAAP are established by the Financial Accounting Standards Board ("FASB") in the form of Accounting Standards Updates ("ASU") to the FASB Accounting Standards Codification. The Company considers the applicability and impact of all ASU. ASU listed below include those that have been adopted during the current fiscal year and/or those that have been issued but not yet adopted as of the date of this filing. ASU not listed below were assessed and determined to be either not applicable or not material. Adoption of ASU 2016-01 Effective January 1, 2018, the Company adopted ASU 2016-01, Financial Instruments - Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Liabilities using a modified retrospective method. Adoption of this ASU impacted the Company’s accounting and presentation related to equity investments. The most significant impact is that the changes in fair value of equity securities previously classified as “available for sale” are to be reported in net income within “Other income” in the Consolidated Statements of Operations. Prior to this, the changes in fair value on equity securities classified as “available for sale” were reported in “Accumulated other comprehensive income”. The impacts of this ASU on the Company’s Consolidated Financial Statements can be categorized as follows: (1) Changes to the presentation within the Consolidated Statements of Financial Position; (2) Cumulative-effect Adjustment Upon Adoption; and (3) Changes to Accounting Policies. Each of these components is described below. This section is meant to serve as an update to, and should be read in conjunction with, Note 2 to the Consolidated Financial Statements included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2017. (1) Changes to the presentation within the Consolidated Statements of Financial Position Because of the fundamental accounting changes as described in section "(3) Changes to Accounting Policies" below, the Company determined that changes to the presentation of certain balances in the investment section of the Company’s Consolidated Statements of Financial Position were also necessary to maintain clarity and logical presentation. The table below illustrates these changes by presenting the balances as previously reported in the Company’s Annual Report on Form 10-K for the year ended December 31, 2017 and the reclassifications that were made, along with a footnote explanation of each reclassification. December 31, 2017 As previously reported Reclassifications As currently reported Consolidated Statements of Financial Position Line Items (1) (2) (3) (in thousands) Fixed maturities, available-for-sale, at fair value $ 5,223,302 $ 5,223,302 *Fixed maturities, trading, at fair value 0 38,793 38,793 Equity securities, available-for-sale, at fair value 23,122 (23,122 ) 0 *Equity securities, at fair value 0 23,122 17,488 40,610 Trading account assets, at fair value 56,281 (56,281 ) 0 Policy loans 1,161,101 1,161,101 Short-term investments 1,339 1,339 Commercial mortgage and other loans 1,083,419 1,083,419 Other long-term investments 263,074 (263,074 ) 0 *Other invested assets 0 263,074 263,074 Total investments $ 7,811,638 $ 0 $ 0 $ 0 $ 7,811,638 * - New line item effective January 1, 2018. Strikethrough - Eliminated line item effective January 1, 2018. (1) Retitled “Equity securities, available-for-sale, at fair value” to “Equity securities, at fair value” as equity securities can no longer be described as available-for-sale. (2) Eliminated the line item “Trading account assets, at fair value” and reclassified each component to another line item. (3) Retitled “Other long-term investments” to “Other invested assets”. (2) Cumulative-effect Adjustment Upon Adoption The provisions of ASU 2016-01 require that the Company apply the amendments through a cumulative-effect adjustment to the Consolidated Statements of Financial Position as of the beginning of the fiscal year of adoption. The following table illustrates the impact on the Company’s Consolidated Statement of Financial Position as a result of recording this cumulative-effect adjustment on January 1, 2018. Summary of ASU 2016-01 Transition Impacts on the Consolidated Statement of Financial Position upon Adoption on January 1, 2018 (in thousands) Increase / (Decrease) Other invested assets $ 8,097 Total assets $ 8,097 Income taxes $ 1,700 Total liabilities 1,700 Accumulated other comprehensive income (loss) (1,539 ) Retained earnings 7,936 Total equity 6,397 Total liabilities and equity $ 8,097 (3) Changes to Accounting Policies This section summarizes the changes in our accounting policies resulting from the adoption of ASU 2016-01 as well as an update to the components of the financial statement line items impacted by the Company’s Consolidated Statements of Financial Position presentation changes described above. ASSETS Fixed maturities, trading is a new financial statement line item comprised of fixed maturities that are carried at fair value. Prior to the adoption of the standard, these fixed maturities were reported in “Trading account assets, at fair value”. Realized and unrealized gains and losses on these investments are reported in “Other income”, and interest and dividend income from these investments is reported in “Net investment income”. Equity securities, at fair value is the new title of the financial statement line item formerly titled “Equity securities, available for sale, at fair value”. As a result of the adoption of the standard, equity securities previously reported in “Trading account assets, at fair value” were reclassified to “Equity securities, at fair value”. The retitled financial statement line is comprised of common stock and mutual fund shares, which are carried at fair value. Realized and unrealized gains and losses on these investments are reported in “Other income,” and dividend income is reported in “Net investment income” on the ex-dividend date. Prior to the adoption of the standard, for the equity investments reported in the financial statement line formerly titled “Equity securities, available for sale, at fair value” the associated net realized gains and losses were included in “Realized investment gains (losses), net” and the associated net unrealized gains and losses were included in “Accumulated other comprehensive income (loss)” (“AOCI”). In addition, with the adoption of the standard, the identification of OTTI for these investments is no longer needed as all of these investments are now measured at fair value with changes in fair value reported in earnings. Other invested assets is the new title of the financial statement line formerly titled “Other long-term investments”. Investments previously reported in “Other long-term investments” were reclassified to “Other invested assets”. The retitled financial statement line consists of the Company’s non-coupon investments in Limited Partnerships and Limited Liability Companies ("LPs/LLCs") (other than operating joint ventures) and derivative assets. LPs/LLCs interests are accounted for using either the equity method of accounting, or at fair value with changes in fair value reported in “Other income”. Prior to the adoption of the standard, the Company applied the cost method of accounting for certain LPs/LLCs interests when its partnership interest was considered minor. The standard effectively eliminated the cost method of accounting for these equity investments. The Company’s income from investments in LPs/LLCs accounted for using the equity method, other than the Company’s investments in operating joint ventures, is included in “Net investment income”. The carrying value of these investments is written down, or impaired, to fair value when a decline in value is considered to be other-than-temporary. In applying the equity method (including assessment for OTTI), the Company uses financial information provided by the investee, generally on a one to three month lag. For the investments reported at fair value with changes in fair value reported in current earnings, the associated realized and unrealized gains and losses are reported in “Other income”. REVENUES AND BENEFITS AND EXPENSES Other income includes realized and unrealized gains or losses from investments reported as “Fixed maturities, trading”, “Equity securities, at fair value,” and “Other invested assets” that are measured at fair value. Other ASU adopted during the nine months ended September 30, 2018 . Standard Description Effective date and method of adoption Effect on the financial statements or other significant matters ASU 2014-09 , Revenue from Contracts with Customers (Topic 606) The ASU is based on the core principle that revenue is recognized to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods and services. The standard also requires additional disclosures about the nature, amount, timing and uncertainty of revenue and cash flows arising from customer contracts, and assets recognized from the costs to obtain or fulfill a contract with a customer. Revenue recognition for insurance contracts and financial instruments is explicitly scoped out of the standard. January 1, 2018 using the modified retrospective method which included a cumulative-effect adjustment on the balance sheet as of the beginning of the fiscal year of adoption. Adoption of the ASU did not have an impact on the Company’s Consolidated Financial Statements and Notes to the Consolidated Financial Statements. ASU 2016-15 , Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments (a Consensus of the Emerging Issues Task Force) This ASU addresses diversity in practice in how certain cash receipts and cash payments are presented and classified in the statement of cash flows. The standard provides clarity on the treatment of eight specifically defined types of cash inflows and outflows. January 1, 2018 using the retrospective method (with early adoption permitted provided that all amendments are adopted in the same period). Adoption of the ASU did not have a significant impact on the Company’s Consolidated Financial Statements and Notes to the Consolidated Financial Statements. ASU 2016-18 , Statement of Cash Flows (Topic 230): Restricted Cash In November 2016, the FASB issued this ASU to address diversity in practice from entities classifying and presenting transfers between cash and restricted cash as operating, investing, or financing activities, or as a combination of those activities in the Statement of Cash Flows. The ASU requires entities to show the changes in the total of cash, cash equivalents, restricted cash, and restricted cash equivalents in the Statement of Cash Flows. As a result, transfers between such categories will no longer be presented in the Statement of Cash Flows. January 1, 2018 using the retrospective method (with early adoption permitted). Adoption of the ASU did not have a significant impact on the Company’s Consolidated Financial Statements and Notes to the Consolidated Financial Statements. ASU 2018-02 , Income Statement - Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income In February 2018, this ASU was issued following the enactment of the Tax Act of 2017. This ASU allows an entity to elect a reclassification from accumulated other comprehensive income to retained earnings for stranded effects resulting from the Tax Act of 2017. January 1, 2019 with early adoption permitted. The ASU should be applied either in the period of adoption or retrospectively to each period in which the effect of the change in the U.S. federal corporate income tax rate in the Tax Act of 2017 is recognized. The Company early adopted the ASU effective January 1, 2018 and elected to apply the ASU in the period of adoption subsequent to recording the adoption impacts of ASU 2016-01 as described above. As a result, the Company reclassified stranded effects resulting from the Tax Act of 2017 by increasing accumulated other comprehensive income and decreasing retained earnings, each by $30.4 million. Stranded effects unrelated to the Tax Act of 2017 are generally released from accumulated other comprehensive income when an entire portfolio of the type of item related to the stranded effect is liquidated, sold or extinguished (i.e., portfolio approach). ASU issued but not yet adopted as of September 30, 2018 — ASU 2018-12 ASU 2018-12, Financial Services - Insurance (Topic 944): Targeted Improvements to the Accounting for Long-Duration Contracts, was issued by the FASB on August 15, 2018 and is expected to have a significant impact on the Company’s Consolidated Financial Statements and Notes to the Consolidated Financial Statements. The ASU is effective January 1, 2021 (with early adoption permitted), and will impact, at least to some extent, the accounting and disclosure requirements for all long-duration insurance and investment contracts issued by the Company. Outlined below are four key areas of change, although there are other less significant changes not noted below. In addition to the impacts to the balance sheet upon adoption, the Company also expects an impact to how earnings emerge thereafter. ASU 2018-12 Amended Topic Description Method of adoption Effect on the financial statements or other significant matters Cash flow assumptions used to measure the liability for future policy benefits for non-participating traditional and limited-pay insurance products Requires an entity to review, and if necessary, update the cash flow assumptions used to measure the liability for future policy benefits, for both changes in future assumptions and actual experience, at least annually using a retrospective update method with a cumulative catch-up adjustment recorded in a separate line item in the Consolidated Statements of Operations. An entity may choose one of two adoption methods for the liability for future policy benefits: (1) a modified retrospective transition method whereby the entity will apply the amendments to contracts in force as of the beginning of the earliest period presented on the basis of their existing carrying amounts, adjusted for the removal of any related amounts in AOCI or (2) a full retrospective transition method. The options for method of adoption and the impacts of such methods are under assessment. Discount rate assumption used to measure the liability for future policy benefits for non-participating traditional and limited-pay insurance products Requires discount rate assumptions to be based on an upper-medium grade fixed income instrument yield and will be required to be updated each quarter with the impact recorded through Other Comprehensive Income ("OCI"). As noted above, an entity may choose either a modified retrospective transition method or full retrospective transition method for the liability for future policy benefits. Under either method, for balance sheet remeasurement purposes, the liability for future policy benefits will be remeasured using current discount rates as of the beginning of the earliest period presented with the impact recorded as a cumulative effect adjustment to AOCI. Upon adoption, under either transition method, there will be an adjustment to AOCI as a result of remeasuring in force contract liabilities using current upper-medium grade fixed income instrument yields. The adjustment upon adoption will largely reflect the difference between the discount rate locked-in at contract inception versus current discount rates at transition. The magnitude of such adjustment is currently being assessed. Amortization of deferred acquisition costs ("DAC") and other balances Requires DAC and other balances, such as unearned revenue reserves and deferred sales inducements, to be amortized on a constant level basis over the expected term of the related contract, independent of expected profitability. An entity may apply one of two adoption methods: (1) a modified retrospective transition method whereby the entity will apply the amendments to contracts in force as of the beginning of the earliest period presented on the basis of their existing carrying amounts, adjusted for the removal of any related amounts in AOCI or (2) if an entity chooses a full retrospective transition method for its future policy benefits, as described above, it is required to also use a retrospective transition method for DAC and other balances. The options for method of adoption and the impacts of such methods are under assessment. Under the modified retrospective transition method, the Company would not expect a significant impact to the balance sheet, other than the impact of the removal of any related amounts in AOCI. Market Risk Benefits Requires an entity to measure all market risk benefits (e.g., living benefit and death benefit guarantees associated with variable annuities) at fair value with changes in value attributable to changes in an entity’s non-performance risk ("NPR") to be recognized in OCI. An entity will apply a retrospective transition method which will include a cumulative-effect adjustment on the balance sheet as of the earliest period presented. Upon adoption, the Company expects an impact to retained earnings for the difference between the fair value and carrying value of benefits not currently measured at fair value (e.g., guaranteed minimum death benefits on variable annuities) and an impact from reclassifying the cumulative effect of changes in NPR from retained earnings to AOCI. The magnitude of such adjustments is currently being assessed. Other ASU issued but not yet adopted as of September 30, 2018 Standard Description Effective date and method of adoption Effect on the financial statements or other significant matters ASU 2016-13 , This ASU provides a new current expected credit loss model to account for credit losses on certain financial assets and off-balance sheet exposures (e.g., loans held for investment, debt securities held to maturity, reinsurance receivables, net investments in leases and loan commitments). The model requires an entity to estimate lifetime credit losses related to such financial assets and exposures based on relevant information about past events, current conditions, and reasonable and supportable forecasts that affect the collectability of the reported amount. The standard also modifies the current other-than-temporary impairment standard for available-for-sale debt securities to require the use of an allowance rather than a direct write down of the investment, and replaces existing standard for purchased credit deteriorated loans and debt securities. January 1, 2020 using the modified retrospective method which will include a cumulative-effect adjustment on the balance sheet as of the beginning of the fiscal year of adoption. However, prospective application is required for purchased credit deteriorated assets previously accounted for under ASU 310-30 and for debt securities for which an other-than-temporary-impairment was recognized prior to the date of adoption. Early adoption is permitted beginning January 1, 2019. The Company is currently assessing the impact of the ASU on the Company’s Consolidated Financial Statements and Notes to the Consolidated Financial Statements. ASU 2017-08, Receivables - Nonrefundable Fees and Other Costs (Subtopic 310-20) Premium Amortization on Purchased Callable Debt Securities This ASU requires certain premiums on callable debt securities to be amortized to the earliest call date. January 1, 2019 using the modified retrospective method (with early adoption permitted) which will include a cumulative-effect adjustment on the balance sheet as of the beginning of the fiscal year of adoption. The Company does not expect the adoption of the ASU to have a significant impact on the Company’s Consolidated Financial Statements and Notes to the Consolidated Financial Statements. ASU 2017-12, Derivatives and Hedging (Topic 815): Targeted Improvements to Accounting for Hedging Activities This ASU makes targeted changes to the existing hedge accounting model to better portray the economics of an entity’s risk management activities and to simplify the use of hedge accounting. January 1, 2019 using the modified retrospective method (with early adoption permitted) which will include a cumulative-effect adjustment on the balance sheet as of the beginning of the fiscal year of adoption. The Company does not expect the adoption of the ASU to have a significant impact on the Company’s Consolidated Financial Statements and Notes to the Consolidated Financial Statements.

Investments

Investments	9 Months Ended
	Sep. 30, 2018
Investments [Abstract]
Investments	INVESTMENTS Fixed Maturity Securities The following tables set forth information relating to fixed maturity securities (excluding investments classified as trading), as of the dates indicated: September 30, 2018 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value OTTI in AOCI(3) (in thousands) Fixed maturities, available-for-sale: U.S. Treasury securities and obligations of U.S. government authorities and agencies $ 70,647 $ 2,008 $ 19 $ 72,636 $ 0 Obligations of U.S. states and their political subdivisions 610,471 12,030 3,893 618,608 0 Foreign government bonds 206,359 2,837 6,178 203,018 0 Public utilities 711,477 23,424 15,574 719,327 0 Redeemable preferred stock 4,118 665 20 4,763 0 All other U.S. public corporate securities 1,381,716 39,769 35,222 1,386,263 0 All other U.S. private corporate securities 675,995 4,597 14,848 665,744 0 All other foreign public corporate securities 258,377 4,486 8,094 254,769 0 All other foreign private corporate securities 777,245 13,807 26,521 764,531 0 Asset-backed securities(1) 162,353 1,885 223 164,015 (124 ) Commercial mortgage-backed securities 295,265 1,093 6,700 289,658 0 Residential mortgage-backed securities(2) 91,984 1,374 1,982 91,376 (188 ) Total fixed maturities, available-for-sale $ 5,246,007 $ 107,975 $ 119,274 $ 5,234,708 $ (312 ) (1) Includes credit-tranched securities collateralized by loan obligations, sub-prime mortgages, auto loans, education loans and other asset types. (2) Includes publicly-traded agency pass-through securities and collateralized mortgage obligations. (3) Represents the amount of unrealized losses remaining in AOCI, from the impairment measurement date. Amount excludes $0.0 million of net unrealized gains on impaired available-for-sale securities relating to changes in the value of such securities subsequent to the impairment measurement date. December 31, 2017 Amortized Gross Unrealized Gains Gross Unrealized Losses Fair Value OTTI in AOCI(3) (in thousands) Fixed maturities, available-for-sale: U.S. Treasury securities and obligations of U.S. government authorities and agencies $ 95,851 $ 3,964 $ 0 $ 99,815 $ 0 Obligations of U.S. states and their political subdivisions 597,254 38,204 0 635,458 0 Foreign government bonds 128,058 7,536 496 135,098 0 Public utilities 677,702 61,588 1,058 738,232 0 Redeemable preferred stock 4,053 957 0 5,010 0 All other U.S. public corporate securities 1,254,140 105,524 2,580 1,357,084 (215 ) All other U.S. private corporate securities 710,424 18,306 1,644 727,086 0 All other foreign public corporate securities 168,399 12,522 732 180,189 0 All other foreign private corporate securities 737,037 41,405 9,598 768,844 0 Asset-backed securities(1) 179,935 2,519 26 182,428 (138 ) Commercial mortgage-backed securities 320,223 5,148 2,539 322,832 0 Residential mortgage-backed securities(2) 68,868 2,527 169 71,226 (220 ) Total fixed maturities, available-for-sale $ 4,941,944 $ 300,200 $ 18,842 $ 5,223,302 $ (573 ) (1) Includes credit-tranched securities collateralized by loan obligations, sub-prime mortgages, auto loans, education loans and other asset types. (2) Includes publicly-traded agency pass-through securities and collateralized mortgage obligations. (3) Represents the amount of unrealized losses remaining in AOCI, from the impairment measurement date. Amount excludes $2.2 million of net unrealized gains on impaired available-for-sale securities relating to changes in the value of such securities subsequent to the impairment measurement date. The following tables set forth the fair value and gross unrealized losses aggregated by investment category and length of time that individual fixed maturity securities had been in a continuous unrealized loss position, as of the dates indicated: September 30, 2018 Less Than Twelve Months Twelve Months or More Total Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses (in thousands) Fixed maturities, available-for-sale: U.S. Treasury securities and obligations of U.S. government authorities and agencies $ 617 $ 19 $ 0 $ 0 $ 617 $ 19 Obligations of U.S. states and their political subdivisions 219,185 3,893 0 0 219,185 3,893 Foreign government bonds 118,010 4,515 20,274 1,663 138,284 6,178 Public utilities 334,468 12,808 29,857 2,766 364,325 15,574 Redeemable preferred stock 1,789 20 0 0 1,789 20 All other U.S. public corporate securities 618,747 26,700 106,631 8,522 725,378 35,222 All other U.S. private corporate securities 383,595 10,490 81,864 4,358 465,459 14,848 All other foreign public corporate securities 169,812 6,447 15,813 1,647 185,625 8,094 All other foreign private corporate securities 378,179 14,147 75,531 12,374 453,710 26,521 Asset-backed securities 38,396 136 4,052 87 42,448 223 Commercial mortgage-backed securities 152,005 3,570 44,529 3,130 196,534 6,700 Residential mortgage-backed securities 56,256 1,309 12,212 673 68,468 1,982 Total fixed maturities, available-for-sale $ 2,471,059 $ 84,054 $ 390,763 $ 35,220 $ 2,861,822 $ 119,274 December 31, 2017 Less Than Twelve Months Twelve Months or More Total Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses (in thousands) Fixed maturities, available-for-sale: U.S. Treasury securities and obligations of U.S. government authorities and agencies $ 0 $ 0 $ 0 $ 0 $ 0 $ 0 Obligations of U.S. states and their political subdivisions 0 0 0 0 0 0 Foreign government bonds 16,522 210 11,959 286 28,481 496 Public utilities 26,466 380 27,354 678 53,820 1,058 Redeemable preferred stock 0 0 0 0 0 0 All other U.S. public corporate securities 36,100 304 102,490 2,276 138,590 2,580 All other U.S. private corporate securities 79,495 781 36,642 863 116,137 1,644 All other foreign public corporate securities 27,078 190 8,390 542 35,468 732 All other foreign private corporate securities 48,109 472 133,055 9,126 181,164 9,598 Asset-backed securities 6,351 22 317 4 6,668 26 Commercial mortgage-backed securities 49,823 285 93,403 2,254 143,226 2,539 Residential mortgage-backed securities 8,030 28 6,160 141 14,190 169 Total fixed maturities, available-for-sale $ 297,974 $ 2,672 $ 419,770 $ 16,170 $ 717,744 $ 18,842 As of September 30, 2018 and December 31, 2017 , the gross unrealized losses on fixed maturity securities were composed of $108.2 million and $13.9 million , respectively, related to “1” highest quality or “2” high quality securities based on the National Association of Insurance Commissioners (“NAIC”) or equivalent rating and $11.1 million and $4.9 million , respectively, related to other than high or highest quality securities based on NAIC or equivalent rating. As of September 30, 2018 , the $35.2 million of gross unrealized losses on fixed maturity securities of twelve months or more were concentrated in the Company’s corporate securities within the finance , energy and consumer non-cyclical sectors and in commercial mortgage-backed securities . As of December 31, 2017 , the $16.2 million of gross unrealized losses on fixed maturity securities of twelve months or more were concentrated in commercial mortgage-backed securities and in the Company’s corporate securities within the energy and finance sectors. In accordance with its policy described in Note 2 to the Consolidated Financial Statements included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2017 , the Company concluded that an adjustment to earnings for OTTI for these fixed maturity securities was not warranted at either September 30, 2018 or December 31, 2017 . These conclusions were based on a detailed analysis of the underlying credit and cash flows on each security. Gross unrealized losses are primarily attributable to general credit spread widening, increases in interest rates and foreign currency exchange rate movements. As of September 30, 2018 , the Company did not intend to sell these securities, and it was not more likely than not that the Company would be required to sell these securities before the anticipated recovery of the remaining amortized cost basis. The following table sets forth the amortized cost and fair value of fixed maturities by contractual maturities, as of the date indicated: September 30, 2018 Amortized Cost Fair Value (in thousands) Fixed maturities, available-for-sale: Due in one year or less $ 107,422 $ 108,362 Due after one year through five years 714,425 706,440 Due after five years through ten years 1,034,940 1,026,399 Due after ten years 2,839,618 2,848,458 Asset-backed securities 162,353 164,015 Commercial mortgage-backed securities 295,265 289,658 Residential mortgage-backed securities 91,984 91,376 Total fixed maturities, available-for-sale $ 5,246,007 $ 5,234,708 Actual maturities may differ from contractual maturities because issuers may have the right to call or prepay obligations. Asset-backed, commercial mortgage-backed and residential mortgage-backed securities are shown separately in the table above, as they do not have a single maturity date. The following table sets forth the sources of fixed maturity proceeds and related investment gains (losses), as well as losses on impairments of fixed maturities, for the periods indicated: Three Months Ended September 30, Nine Months Ended September 30, 2018 2017 2018 2017 (in thousands) Fixed maturities, available-for-sale: Proceeds from sales(1) $ 4,478 $ 56,312 $ 138,565 $ 483,151 Proceeds from maturities/prepayments 90,432 125,128 230,550 392,320 Gross investment gains from sales and maturities 394 34,996 508 44,016 Gross investment losses from sales and maturities (216 ) (6,259 ) (3,806 ) (9,554 ) OTTI recognized in earnings(2) (1,226 ) (143 ) (1,877 ) (5,668 ) (1) Includes $0.2 million and $(0.1) million of non-cash related proceeds due to the timing of trade settlements for the nine months ended September 30, 2018 and 2017 , respectively. (2) Excludes the portion of OTTI amounts remaining in OCI, representing any difference between the fair value of the impaired debt security and the net present value of its projected future cash flows at the time of the impairment. The following table sets forth a rollforward of pre-tax amounts remaining in OCI related to fixed maturity securities with credit loss impairments recognized in earnings, for the periods indicated: Three Months Ended September 30, 2018 Nine Months Ended September 30, 2018 Three Months Ended September 30, 2017 Nine Months Ended September 30, 2017 (in thousands) Credit loss impairments: Balance, beginning of period $ 1,982 $ 4,374 $ 3,724 $ 5,520 New credit loss impairments 0 0 0 424 Additional credit loss impairments on securities previously impaired 0 0 0 0 Increases due to the passage of time on previously recorded credit losses 463 510 25 88 Reductions for securities which matured, paid down, prepaid or were sold during the period (15 ) (1,975 ) (24 ) (1,894 ) Reductions for securities impaired to fair value during the period(1) 0 0 0 (327 ) Accretion of credit loss impairments previously recognized due to an increase in cash flows expected to be collected (6 ) (485 ) (11 ) (97 ) Assets transferred to parent and affiliates 0 0 0 0 Balance, end of period $ 2,424 $ 2,424 $ 3,714 $ 3,714 (1) Represents circumstances where the Company determined in the current period that it intends to sell the security or it is more likely than not that it will be required to sell the security before recovery of the security’s amortized cost. Equity Securities The net change in unrealized gains (losses) from equity securities still held at period end, recorded within “Other income,” was $(0.2) million and $(0.2) million during the three months ended September 30, 2018 and 2017 , respectively. The net change in unrealized gains (losses) from equity securities still held at period end, recorded within “Other income,” was $(2.1) million and $1.3 million during the nine months ended September 30, 2018 and 2017 , respectively. Commercial Mortgage and Other Loans The following table sets forth the composition of “Commercial mortgage and other loans,” as of the dates indicated: September 30, 2018 December 31, 2017 Amount (in thousands) % of Total Amount (in thousands) % of Total Commercial mortgage and agricultural property loans by property type: Apartments/Multi-Family $ 363,801 30.8 % $ 356,694 32.9 % Hospitality 16,196 1.4 16,529 1.5 Industrial 254,148 21.5 180,619 16.7 Office 172,576 14.6 159,646 14.7 Other 125,652 10.7 99,119 9.1 Retail 190,568 16.2 205,367 18.9 Total commercial mortgage loans 1,122,941 95.2 1,017,974 93.8 Agricultural property loans 56,226 4.8 67,239 6.2 Total commercial mortgage and agricultural property loans by property type 1,179,167 100.0 % 1,085,213 100.0 % Valuation allowance (1,772 ) (1,794 ) Total commercial mortgage and other loans $ 1,177,395 $ 1,083,419 As of September 30, 2018 , the commercial mortgage and agricultural property loans were secured by properties geographically dispersed throughout the United States (with the largest concentrations in California ( 22% ), Texas ( 15% ) and New York ( 6% )) and included loans secured by properties in Europe ( 6% ), Australia ( 4% ) and Mexico ( 2% ). The following tables set forth the activity in the allowance for credit losses for commercial mortgage and other loans, as of the dates indicated: September 30, 2018 Commercial Mortgage Loans Agricultural Property Loans Total (in thousands) Allowance for credit losses: Balance, beginning of year $ 1,728 $ 66 $ 1,794 Addition to (release of) allowance for losses 4 (26 ) (22 ) Charge-offs, net of recoveries 0 0 0 Total ending balance $ 1,732 $ 40 $ 1,772 December 31, 2017 Commercial Mortgage Loans Agricultural Property Loans Total (in thousands) Allowance for credit losses: Balance, beginning of year $ 1,513 $ 45 $ 1,558 Addition to (release of) allowance for losses 215 21 236 Charge-offs, net of recoveries 0 0 0 Total ending balance $ 1,728 $ 66 $ 1,794 The following tables set forth the allowance for credit losses and the recorded investment in commercial mortgage and other loans, as of the dates indicated: September 30, 2018 Commercial Mortgage Loans Agricultural Property Loans Total (in thousands) Allowance for credit losses: Individually evaluated for impairment $ 0 $ 0 $ 0 Collectively evaluated for impairment 1,732 40 1,772 Total ending balance(1) $ 1,732 $ 40 $ 1,772 Recorded investment(2): Individually evaluated for impairment $ 0 $ 815 $ 815 Collectively evaluated for impairment 1,122,941 55,411 1,178,352 Total ending balance(1) $ 1,122,941 $ 56,226 $ 1,179,167 (1) As of September 30, 2018 , there were no loans acquired with deteriorated credit quality. (2) Recorded investment reflects the carrying value gross of related allowance. December 31, 2017 Commercial Mortgage Loans Agricultural Property Loans Total (in thousands) Allowance for credit losses: Individually evaluated for impairment $ 0 $ 0 $ 0 Collectively evaluated for impairment 1,728 66 1,794 Total ending balance(1) $ 1,728 $ 66 $ 1,794 Recorded investment(2): Individually evaluated for impairment $ 2,316 $ 1,153 $ 3,469 Collectively evaluated for impairment 1,015,658 66,086 1,081,744 Total ending balance(1) $ 1,017,974 $ 67,239 $ 1,085,213 (1) As of December 31, 2017 , there were no loans acquired with deteriorated credit quality. (2) Recorded investment reflects the carrying value gross of related allowance. The following tables set forth certain key credit quality indicators for commercial mortgage and agricultural property loans based upon the recorded investment gross of allowance for credit losses, as of the dates indicated: September 30, 2018 Debt Service Coverage Ratio ≥ 1.2X 1.0X to < 1.2X < 1.0X Total Loans (in thousands) Loan-to-Value Ratio: 0%-59.99% $ 665,897 $ 13,001 $ 0 $ 678,898 60%-69.99% 320,308 20,449 0 340,757 70%-79.99% 99,433 32,849 0 132,282 80% or greater 27,000 230 0 27,230 Total loans $ 1,112,638 $ 66,529 $ 0 $ 1,179,167 December 31, 2017 Debt Service Coverage Ratio ≥ 1.2X 1.0X to < 1.2X < 1.0X Total Loans (in thousands) Loan-to-Value Ratio: 0%-59.99% $ 606,846 $ 21,709 $ 705 $ 629,260 60%-69.99% 333,185 9,594 2,010 344,789 70%-79.99% 84,492 26,439 0 110,931 80% or greater 0 0 233 233 Total loans $ 1,024,523 $ 57,742 $ 2,948 $ 1,085,213 The following tables set forth an aging of past due commercial mortgage and other loans, based upon the recorded investment gross of allowance for credit losses, as well as the amount of commercial mortgage and other loans on non-accrual status, as of the dates indicated: September 30, 2018 Current 30-59 Days Past Due 60-89 Days Past Due 90 Days or More Past Due(1) Total Loans Non-Accrual Status(2) (in thousands) Commercial mortgage loans $ 1,122,941 $ 0 $ 0 $ 0 $ 1,122,941 $ 0 Agricultural property loans 56,226 0 0 0 56,226 0 Total $ 1,179,167 $ 0 $ 0 $ 0 $ 1,179,167 $ 0 (1) As of September 30, 2018 , there were no loans in this category accruing interest. (2) For additional information regarding the Company’s policies for accruing interest on loans, see Note 2 to the Consolidated Financial Statements included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2017 . December 31, 2017 Current 30-59 Days Past Due 60-89 Days Past Due 90 Days or More Past Due(1) Total Loans Non-Accrual Status(2) (in thousands) Commercial mortgage loans $ 1,017,974 $ 0 $ 0 $ 0 $ 1,017,974 $ 0 Agricultural property loans 67,239 0 0 0 67,239 0 Total $ 1,085,213 $ 0 $ 0 $ 0 $ 1,085,213 $ 0 (1) As of December 31, 2017 , there were no loans in this category accruing interest. (2) For additional information regarding the Company’s policies for accruing interest on loans, see Note 2 to the Consolidated Financial Statements included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2017 . For the three and nine months ended September 30, 2018 , there were no commercial mortgage and other loans acquired, other than those through direct origination, and there were no commercial mortgage and other loans sold. For both the three and nine months ended September 30, 2017 , there were no commercial mortgage and other loans acquired, other than those through direct origination. For the three months ended September 30, 2017 , there were no commercial mortgage and other loans sold. For the nine months ended September 30, 2017 , there were $42 million of commercial mortgage and other loans sold. Other Invested Assets The following table sets forth the composition of “Other invested assets,” as of the dates indicated: September 30, 2018 December 31, 2017 (in thousands) Company’s investment in separate accounts $ 42,317 $ 37,404 LPs/LLCs: Equity method: Private equity 147,660 123,957 Hedge funds 58,329 53,066 Real estate-related 8,909 7,040 Subtotal equity method 214,898 184,063 Fair value: Private equity 59,230 35,686 Hedge funds 774 726 Real estate-related 8,044 5,186 Subtotal fair value(1) 68,048 41,598 Total LPs/LLCs 282,946 225,661 Derivative instruments 8,119 9 Total other invested assets(2) $ 333,382 $ 263,074 (1) As of December 31, 2017 , $40.9 million was accounted for under the cost method. (2) Prior period amounts have been reclassified to conform to current period presentation. For additional information, see Note 2 . Net Investment Income The following table sets forth “Net investment income” by investment type, for the periods indicated: Three Months Ended September 30, Nine Months Ended September 30, 2018 2017 2018 2017 (in thousands) Fixed maturities, available-for-sale $ 55,109 $ 59,264 $ 163,564 $ 177,512 Fixed maturities, trading 271 126 809 486 Equity securities, at fair value 222 316 664 758 Commercial mortgage and other loans 12,462 13,534 37,170 39,800 Policy loans 16,628 16,110 48,861 47,572 Short-term investments and cash equivalents 952 282 1,389 674 Other invested assets 5,169 1,865 7,027 15,514 Gross investment income 90,813 91,497 259,484 282,316 Less: investment expenses (4,627 ) (4,975 ) (13,734 ) (15,138 ) Net investment income(1) $ 86,186 $ 86,522 $ 245,750 $ 267,178 (1) Prior period amounts have been reclassified to conform to current period presentation. Realized Investment Gains (Losses), Net The following table sets forth “Realized investment gains (losses), net,” by investment type, for the periods indicated: Three Months Ended September 30, Nine Months Ended September 30, 2018 2017 2018 2017 (in thousands) Fixed maturities(1) $ (1,048 ) $ 28,594 $ (5,175 ) $ 28,794 Equity securities(2) 0 0 0 (125 ) Commercial mortgage and other loans 16 74 22 (414 ) LPs/LLCs 0 5 849 (96 ) Derivatives(3) (48,393 ) (303,850 ) (131,034 ) (59,319 ) Short-term investments and cash equivalents 2 (9 ) (17 ) (15 ) Realized investment gains (losses), net $ (49,423 ) $ (275,186 ) $ (135,355 ) $ (31,175 ) (1) Includes fixed maturity securities classified as available-for-sale and excludes fixed maturity securities classified as trading. (2) Effective January 1, 2018, realized gains (losses) on equity securities are recorded within “Other income.” (3) Includes the hedged items offset in qualifying fair value hedge accounting relationships. Net Unrealized Gains (Losses) on Investments within AOCI The following table sets forth net unrealized gains (losses) on investments, as of the dates indicated: September 30, 2018 December 31, 2017 (in thousands) Fixed maturity securities, available-for-sale—with OTTI $ (308 ) $ 1,609 Fixed maturity securities, available-for-sale—all other (10,991 ) 279,749 Equity securities, available-for-sale(1) 0 2,368 Derivatives designated as cash flow hedges(2) (7,567 ) (17,678 ) Affiliated notes 408 4,782 Other investments 5,043 3,588 Net unrealized gains (losses) on investments $ (13,415 ) $ 274,418 (1) Effective January 1, 2018, unrealized gains (losses) on equity securities are recorded within “Other income.” (2) For more information on cash flow hedges, see Note 4 . Repurchase Agreements and Securities Lending In the normal course of business, the Company sells securities under agreements to repurchase and enters into securities lending transactions. As of September 30, 2018 and December 31, 2017 , the Company had no repurchase agreements. The following table sets forth the composition of “Cash collateral for loaned securities,” which represents the liability to return cash collateral received for the following types of securities loaned, as of the dates indicated: September 30, 2018 December 31, 2017 Remaining Contractual Maturities of the Agreements Remaining Contractual Maturities of the Agreements Overnight & Continuous Up to 30 Days Total Overnight & Continuous Up to 30 Days Total (in thousands) U.S. Treasury securities and obligations of U.S. government authorities and agencies $ 5,131 $ 0 $ 5,131 $ 0 $ 22,460 $ 22,460 Foreign government bonds 0 0 0 6,157 0 6,157 U.S. public corporate securities 2,454 0 2,454 4,074 0 4,074 Foreign public corporate securities 0 0 0 478 0 478 Total cash collateral for loaned securities(1) $ 7,585 $ 0 $ 7,585 $ 10,709 $ 22,460 $ 33,169 (1) The Company did not have any agreements with remaining contractual maturities of thirty days or greater, as of the dates indicated.

Derivative Instruments

Derivative Instruments	9 Months Ended
	Sep. 30, 2018
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative Instruments	DERIVATIVE INSTRUMENTS Types of Derivative Instruments and Derivative Strategies The Company utilizes various derivative instruments and strategies to manage its risk. Commonly used derivative instruments include, but are not necessarily limited to: • Interest rate contracts: futures, swaps, options, swaptions, caps and floors • Equity contracts: futures, options and total return swaps • Foreign exchange contracts: futures, options, forwards and swaps • Credit contracts: single and index reference credit default swaps • Other contracts: embedded derivatives For detailed information on these contracts and the related strategies, see Note 10 to the Consolidated Financial Statements included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2017 . Primary Risks Managed by Derivatives The table below provides a summary of the gross notional amount and fair value of derivative contracts by the primary underlying risks, excluding embedded derivatives and associated reinsurance recoverables. Many derivative instruments contain multiple underlying risks. The fair value amounts below represent the gross fair value of derivative contracts prior to taking into account the netting effects of master netting agreements, cash collateral, and NPR. September 30, 2018 December 31, 2017 Primary Underlying Risk/Instrument Type Gross Fair Value Gross Fair Value Notional Assets Liabilities Notional Assets Liabilities (in thousands) Derivatives Designated as Hedge Accounting Instruments: Currency/Interest Rate Foreign Currency Swaps $ 713,959 $ 23,729 $ (34,753 ) $ 649,905 $ 18,243 $ (44,806 ) Total Qualifying Hedges $ 713,959 $ 23,729 $ (34,753 ) $ 649,905 $ 18,243 $ (44,806 ) Derivatives Not Qualifying as Hedge Accounting Instruments: Interest Rate Interest Rate Swaps $ 246,925 $ 11,301 $ (6,463 ) $ 246,925 $ 23,032 $ 0 Foreign Currency Foreign Currency Forwards 21,456 189 (13 ) 16,320 0 (376 ) Credit Credit Default Swaps 756 0 (18 ) 1,594 0 (96 ) Currency/Interest Rate Foreign Currency Swaps 87,548 4,288 (4,836 ) 95,145 4,347 (5,600 ) Equity Equity Options 1,758,194 80,710 (22,272 ) 1,277,102 69,472 (23,500 ) Total Non-Qualifying Hedges $ 2,114,879 $ 96,488 $ (33,602 ) $ 1,637,086 $ 96,851 $ (29,572 ) Total Derivatives (1) $ 2,828,838 $ 120,217 $ (68,355 ) $ 2,286,991 $ 115,094 $ (74,378 ) (1) Excludes embedded derivatives and associated reinsurance recoverables which contain multiple underlying risks. The fair value of the embedded derivatives, included in "Future policy benefits," was a net liability of $2,908 million and $5,453 million as of September 30, 2018 and December 31, 2017 , respectively. The fair value of the related reinsurance recoverables, included in "Reinsurance recoverables" or "Other liabilities," was a net asset of $2,917 million and $5,458 million as of September 30, 2018 and December 31, 2017 , respectively. Of these reinsurance recoverables, the fair value related to the living benefits guarantee from PALAC and Prudential Insurance was a net asset of $2,958 million and $5,445 million and the fair value related to the Prudential Premier® Retirement Variable Annuity with Highest Daily Lifetime Income ("HDI") v.3.0 from Union Hamilton Reinsurance, Ltd. ("Union Hamilton"), an external counterparty, was a net liability of $41 million and a net asset of $13 million as of September 30, 2018 and December 31, 2017 , respectively. See Note 7 for additional information on these reinsurance agreements. The fair value of the embedded derivatives, included in "Policyholders' account balances," was a net liability of $61 million and $47 million as of September 30, 2018 and December 31, 2017 , respectively. There were no related reinsurance recoverables at each respective period. Offsetting Assets and Liabilities The following table presents recognized derivative instruments (excluding embedded derivatives and associated reinsurance recoverables), and repurchase and reverse repurchase agreements that are offset in the Unaudited Interim Consolidated Statements of Financial Position, and/or are subject to an enforceable master netting arrangement or similar agreement, irrespective of whether they are offset in the Unaudited Interim Consolidated Statements of Financial Position. September 30, 2018 Gross Amounts of Recognized Financial Instruments Gross Amounts Offset in the Consolidated Statements of Financial Position Net Amounts Financial Instruments/ Collateral (1) Net Amount (in thousands) Offsetting of Financial Assets: Derivatives (1) $ 120,214 $ (112,098 ) $ 8,116 $ (5,961 ) $ 2,155 Securities purchased under agreements to resell 205,000 0 205,000 (205,000 ) 0 Total Assets $ 325,214 $ (112,098 ) $ 213,116 $ (210,961 ) $ 2,155 Offsetting of Financial Liabilities: Derivatives (1) $ 68,355 $ (68,355 ) $ 0 $ 0 $ 0 Securities sold under agreements to repurchase 0 0 0 0 0 Total Liabilities $ 68,355 $ (68,355 ) $ 0 $ 0 $ 0 December 31, 2017 Gross Amounts of Recognized Financial Instruments Gross Amounts Offset in the Consolidated Statements of Financial Position Net Amounts Presented in the Consolidated Statements of Financial Position Financial Net Amount (in thousands) Offsetting of Financial Assets: Derivatives (1) $ 115,086 $ (115,086 ) $ 0 $ 0 $ 0 Securities purchased under agreements to resell 148,000 0 148,000 (148,000 ) 0 Total Assets $ 263,086 $ (115,086 ) $ 148,000 $ (148,000 ) $ 0 Offsetting of Financial Liabilities: Derivatives (1) $ 74,378 $ (69,718 ) $ 4,660 $ (245 ) $ 4,415 Securities sold under agreements to repurchase 0 0 0 0 0 Total Liabilities $ 74,378 $ (69,718 ) $ 4,660 $ (245 ) $ 4,415 (1) Amounts exclude the excess of collateral received/pledged from/to the counterparty. For information regarding the rights of offset associated with the derivative assets and liabilities in the table above see “Credit Risk” below and Note 9 . For securities purchased under agreements to resell and securities sold under agreements to repurchase, the Company monitors the value of the securities and maintains collateral, as appropriate, to protect against credit exposure. Where the Company has entered into repurchase and resale agreements with the same counterparty, in the event of default, the Company would generally be permitted to exercise rights of offset. For additional information on the Company’s accounting policy for securities repurchase and resale agreements, see Note 2 to the Consolidated Financial Statements included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2017 . Cash Flow Hedges The primary derivative instruments used by the Company in its cash flow hedge accounting relationships are currency swaps. These instruments are only designated for hedge accounting in instances where the appropriate criteria are met. The Company does not use futures, options, credit, equity or embedded derivatives in any of its cash flow hedge accounting relationships. The following tables provide the financial statement classification and impact of derivatives used in qualifying and non-qualifying hedge relationships, excluding the offset of the hedged item in an effective hedge relationship. Three Months Ended September 30, 2018 Realized Net Other AOCI (1) (in thousands) Derivatives Designated as Hedge Accounting Instruments: Cash flow hedges Currency/Interest Rate $ 0 $ 1,767 $ 1,872 $ 1,454 Total cash flow hedges 0 1,767 1,872 1,454 Derivatives Not Qualifying as Hedge Accounting Instruments: Interest Rate (4,543 ) 0 0 0 Currency 230 0 0 0 Currency/Interest Rate (693 ) 0 18 0 Credit 0 0 0 0 Equity 20,901 0 0 0 Embedded Derivatives (64,288 ) 0 0 0 Total non-qualifying hedges (48,393 ) 0 18 0 Total $ (48,393 ) $ 1,767 $ 1,890 $ 1,454 Nine Months Ended September 30, 2018 Realized Net Other AOCI (1) (in thousands) Derivatives Designated as Hedge Accounting Instruments: Cash flow hedges Currency/Interest Rate $ 0 $ 4,916 $ 6,917 $ 10,111 Total cash flow hedges 0 4,916 6,917 10,111 Derivatives Not Qualifying as Hedge Accounting Instruments: Interest Rate (17,068 ) 0 0 0 Currency 895 0 0 0 Currency/Interest Rate 383 0 33 0 Credit (2 ) 0 0 0 Equity 23,725 0 0 0 Embedded Derivatives (138,967 ) 0 0 0 Total non-qualifying hedges (131,034 ) 0 33 0 Total $ (131,034 ) $ 4,916 $ 6,950 $ 10,111 Three Months Ended September 30, 2017 Realized Investment Gains (Losses) Net Investment Income Other Income AOCI (1) (in thousands) Derivatives Designated as Hedge Accounting Instruments: Cash flow hedges Currency/Interest Rate $ 0 $ 1,705 $ (3,013 ) $ (17,210 ) Total cash flow hedges 0 1,705 (3,013 ) (17,210 ) Derivatives Not Qualifying as Hedge Accounting Instruments: Interest Rate (2,160 ) 0 0 0 Currency (537 ) 0 0 0 Currency/Interest Rate (5,665 ) 0 (28 ) 0 Credit (7 ) 0 0 0 Equity 7,574 0 0 0 Embedded Derivatives (303,055 ) 0 0 0 Total non-qualifying hedges (303,850 ) 0 (28 ) 0 Total $ (303,850 ) $ 1,705 $ (3,041 ) $ (17,210 ) Nine Months Ended September 30, 2017 Realized Investment Gains (Losses) Net Investment Income Other Income AOCI (1) (in thousands) Derivatives Designated as Hedge Accounting Instruments: Cash flow hedges Currency/Interest Rate $ 0 $ 4,473 $ (7,805 ) $ (39,924 ) Total cash flow hedges 0 4,473 (7,805 ) (39,924 ) Derivatives Not Qualifying as Hedge Accounting Instruments: Interest Rate (528 ) 0 0 0 Currency (1,245 ) 0 0 0 Currency/Interest Rate (4,607 ) 0 (51 ) 0 Credit (44 ) 0 0 0 Equity 18,016 0 0 0 Embedded Derivatives (70,911 ) 0 0 0 Total non-qualifying hedges (59,319 ) 0 (51 ) 0 Total $ (59,319 ) $ 4,473 $ (7,856 ) $ (39,924 ) (1) Amounts deferred in AOCI. For the nine months ended September 30, 2018 and 2017 , the ineffective portion of derivatives accounted for using hedge accounting was de minimis to the Company’s results of operations. Also, there were no material amounts reclassified into earnings relating to instances in which the Company discontinued cash flow hedge accounting because the forecasted transaction did not occur by the anticipated date or within the additional time period permitted by the authoritative guidance for the accounting for derivatives and hedging. Presented below is a rollforward of current period cash flow hedges in AOCI before taxes: (in thousands) Balance, December 31, 2017 $ (17,678 ) Net deferred gains (losses) on cash flow hedges from January 1 to September 30, 2018 20,554 Amount reclassified into current period earnings (10,443 ) Balance, September 30, 2018 $ (7,567 ) The changes in fair value of cash flow hedges are deferred in AOCI and are included in "Net unrealized investment gains (losses)" in the Unaudited Interim Consolidated Statements of Operations and Comprehensive Income (Loss); these amounts are then reclassified to earnings when the hedged item affects earnings. Using September 30, 2018 values, it is estimated that a pre-tax gain of $6 million will be reclassified from AOCI to earnings during the subsequent twelve months ending September 30, 2019 , offset by amounts pertaining to the hedged items. The exposures the Company is hedging with these qualifying cash flow hedges include the variability of the payment or receipt of interest or foreign currency amounts on existing financial instruments. Credit Derivatives The Company has no exposure from credit derivative positions where it has written credit protection as of September 30, 2018 and December 31, 2017 . The Company has purchased credit protection using credit derivatives in order to hedge specific credit exposures in the Company’s investment portfolio. The Company has outstanding notional amounts of $1 million and $2 million reported at fair value as a liability of $0.0 million and $0.1 million as of September 30, 2018 and December 31, 2017 , respectively. Credit Risk The Company is exposed to credit-related losses in the event of non-performance by counterparty to financial derivative transactions with a positive fair value. The Company manages credit risk by entering into derivative transactions with its affiliate, Prudential Global Funding LLC (“PGF”), related to its over-the-counter ("OTC") derivatives. PGF, in turn, manages its credit risk by: (i) entering into derivative transactions with highly rated major international financial institutions and other creditworthy counterparties governed by master netting agreement, as applicable; (ii) trading through central clearing and OTC parties; (iii) obtaining collateral, such as cash and securities, when appropriate; and (iv) setting limits on single party credit exposures which are subject to periodic management review. Substantially all of the Company’s derivative agreements have zero thresholds which require daily full collateralization by the party in a liability position.

Fair Value of Assets and Liabil

Fair Value of Assets and Liabilities	9 Months Ended
	Sep. 30, 2018
Fair Value Disclosures [Abstract]
Fair Value of Assets and Liabilities	FAIR VALUE OF ASSETS AND LIABILITIES Fair Value Measurement - Fair value represents the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. The authoritative fair value guidance establishes a framework for measuring fair value that includes a hierarchy used to classify the inputs used in measuring fair value. The level in the fair value hierarchy within which the fair value measurement falls is determined based on the lowest level input that is significant to the fair value measurement. The levels of the fair value hierarchy are as follows: Level 1 – Fair value is based on unadjusted quoted prices in active markets that are accessible to the Company for identical assets or liabilities. Level 2 – Fair value is based on significant inputs, other than quoted prices included in Level 1, that are observable for the asset or liability, either directly or indirectly, for substantially the full term of the asset or liability through corroboration with observable market data. Level 2 inputs include quoted market prices in active markets for similar assets and liabilities, quoted market prices in markets that are not active for identical or similar assets or liabilities, and other market observable inputs. Level 3 – Fair value is based on at least one significant unobservable input for the asset or liability. The assets and liabilities in this category may require significant judgment or estimation in determining the fair value. For a discussion of the Company's valuation methodologies for assets and liabilities measured at fair value and the fair value hierarchy, see Note 9 to the Consolidated Financial Statements included in the Company's Annual Report on Form 10-K for the year ended December 31, 2017 . Assets and Liabilities by Hierarchy Level – The tables below present the balances of assets and liabilities reported at fair value on a recurring basis, as of the dates indicated. As of September 30, 2018 Level 1 Level 2 Level 3 Netting(1) Total (in thousands) Fixed maturities, available-for-sale: U.S. Treasury securities and obligations of U.S. government authorities and agencies $ 0 $ 47,290 $ 25,346 $ 0 $ 72,636 Obligations of U.S. states and their political subdivisions 0 618,608 0 0 618,608 Foreign government bonds 0 202,859 159 0 203,018 U.S. corporate public securities 0 1,804,099 635 0 1,804,734 U.S. corporate private securities 0 859,118 30,938 0 890,056 Foreign corporate public securities 0 256,733 205 0 256,938 Foreign corporate private securities 0 831,980 11,689 0 843,669 Asset-backed securities(2) 0 157,383 6,632 0 164,015 Commercial mortgage-backed securities 0 269,610 20,048 0 289,658 Residential mortgage-backed securities 0 91,376 0 0 91,376 Subtotal 0 5,139,056 95,652 0 5,234,708 Fixed maturities, trading 0 36,688 0 0 36,688 Equity securities 124 27,094 16,327 0 43,545 Short-term investments 0 0 456 0 456 Cash equivalents 0 3,934 0 0 3,934 Other invested assets(3) 0 120,217 0 (112,098 ) 8,119 Reinsurance recoverables 0 0 2,958,093 0 2,958,093 Receivables from parent and affiliates 0 127,181 0 0 127,181 Subtotal excluding separate account assets 124 5,454,170 3,070,528 (112,098 ) 8,412,724 Separate account assets(4)(5) 0 126,230,592 0 0 126,230,592 Total assets $ 124 $ 131,684,762 $ 3,070,528 $ (112,098 ) $ 134,643,316 Future policy benefits(6) $ 0 $ 0 $ 2,908,324 $ 0 $ 2,908,324 Policyholders' account balances 0 0 60,847 0 60,847 Payables to parent and affiliates 0 68,355 0 (68,355 ) 0 Other liabilities 0 0 41,333 0 41,333 Total liabilities $ 0 $ 68,355 $ 3,010,504 $ (68,355 ) $ 3,010,504 As of December 31, 2017 Level 1 Level 2 Level 3 Netting(1) Total (in thousands) Fixed maturities, available-for-sale: U.S. Treasury securities and obligations of U.S. government authorities and agencies $ 0 $ 80,611 $ 19,204 $ 0 $ 99,815 Obligations of U.S. states and their political subdivisions 0 635,458 0 0 635,458 Foreign government bonds 0 134,924 174 0 135,098 U.S. corporate public securities 0 1,779,935 1,154 0 1,781,089 U.S. corporate private securities 0 901,080 60,158 0 961,238 Foreign corporate public securities 0 182,243 209 0 182,452 Foreign corporate private securities 0 837,766 13,900 0 851,666 Asset-backed securities(2) 0 71,400 111,028 0 182,428 Commercial mortgage-backed securities 0 322,832 0 0 322,832 Residential mortgage-backed securities 0 71,226 0 0 71,226 Subtotal 0 5,017,475 205,827 0 5,223,302 Fixed maturities, trading(7) 0 38,793 0 0 38,793 Equity securities(7) 94 22,991 17,525 0 40,610 Short-term investments 0 0 1,339 0 1,339 Cash equivalents 0 28,007 0 0 28,007 Other invested assets(3)(7) 0 115,094 0 (115,086 ) 8 Reinsurance recoverables 0 0 5,457,649 0 5,457,649 Receivables from parent and affiliates 0 132,571 0 0 132,571 Subtotal excluding separate account assets 94 5,354,931 5,682,340 (115,086 ) 10,922,279 Separate account assets(4)(5) 0 125,543,035 0 0 125,543,035 Total assets $ 94 $ 130,897,966 $ 5,682,340 $ (115,086 ) $ 136,465,314 Future policy benefits(6) $ 0 $ 0 $ 5,452,583 $ 0 $ 5,452,583 Policyholders' account balances 0 0 46,651 0 46,651 Payables to parent and affiliates 0 74,378 0 (69,718 ) 4,660 Other liabilities 0 0 0 0 0 Total liabilities $ 0 $ 74,378 $ 5,499,234 $ (69,718 ) $ 5,503,894 (1) “Netting” amounts represent cash collateral of $43.7 million and $45.4 million as of September 30, 2018 and December 31, 2017 , respectively, and the impact of offsetting asset and liability positions held with the same counterparty, subject to master netting arrangements. (2) Includes credit tranched securities collateralized by syndicated bank loans, sub-prime mortgages, auto loans, credit cards, education loans and other asset types. (3) Other invested assets excluded from the fair value hierarchy include certain hedge funds, private equity funds and other funds for which fair value is measured at net asset value ("NAV") per share (or its equivalent) as a practical expedient. At September 30, 2018 and December 31, 2017 , the fair values of such investments were $68 million and $0.7 million , respectively. (4) Separate account assets represent segregated funds that are invested for certain customers. Investment risks associated with market value changes are borne by the customers, except to the extent of minimum guarantees made by the Company with respect to certain accounts. Separate account liabilities are not included in the above table as they are reported at contract value and not fair value in the Company's Unaudited Interim Consolidated Statements of Financial Position. (5) Separate account assets included in the fair value hierarchy exclude investments in entities that calculate NAV per share (or its equivalent) as a practical expedient. Such investments excluded from the fair value hierarchy include investments in real estate, hedge funds and a corporate owned life insurance fund, for which fair value is measured at NAV per share (or its equivalent). As of September 30, 2018 and December 31, 2017 , the fair value of such investments was $4,276 million and $4,113 million , respectively. (6) As of September 30, 2018 , the net embedded derivative liability position of $2,908 million includes $1,097 million of embedded derivatives in an asset position and $4,005 million of embedded derivatives in a liability position. As of December 31, 2017 , the net embedded derivative liability position of $5,453 million includes $823 million of embedded derivatives in an asset position and $6,276 million of embedded derivatives in a liability position. (7) Prior period amounts have been reclassified to conform to current period presentation. See Note 2 for details. Transfers between Levels 1 and 2 – Transfers between levels are made to reflect changes in observability of inputs and market activity. Transfers into or out of any level are generally reported at the value as of the beginning of the quarter in which the transfers occur for any such assets still held at the end of the quarter. Periodically, there are transfers between Level 1 and Level 2 for assets held in the Company’s Separate account. The fair value of foreign common stock held in the Company's Separate account may reflect differences in market levels between the close of foreign trading markets and the close of U.S. trading markets for the respective day. Dependent on the existence of such a timing difference, the assets may move between Level 1 and Level 2. During both the three and nine months ended September 30, 2018 and 2017 , there were no transfers between Level 1 and Level 2. Quantitative Information Regarding Internally Priced Level 3 Assets and Liabilities – The tables below present quantitative information on significant internally-priced Level 3 assets and liabilities. As of September 30, 2018 Fair Value Valuation Techniques Unobservable Inputs Minimum Maximum Weighted Average Impact of Increase in Input on Fair Value(1) (in thousands) Assets: Corporate securities(2) $ 20,938 Discounted cash flow Discount rate 7.00 % 20.00 % 9.96 % Decrease Liquidation Liquidation value 6.00 % 54.00 % 51.00 % Increase Reinsurance recoverables $ 2,958,093 Fair values are determined in the same manner as future policy benefits Liabilities: Future policy benefits(3) $ 2,908,324 Discounted cash flow Lapse rate(4) 1 % 13 % Decrease Spread over LIBOR(5) 0.16 % 1.21 % Decrease Utilization rate(6) 50 % 97 % Increase Withdrawal rate See table footnote (7) below Mortality rate(8) 0 % 15 % Decrease Equity volatility curve 14 % 22 % Increase As of December 31, 2017 Fair Value Valuation Techniques Unobservable Inputs Minimum Maximum Weighted Average Impact of Increase in Input on Fair Value(1) (in thousands) Assets: Corporate securities(2) $ 36,966 Discounted cash flow Discount rate 5.06 % 22.23 % 7.33 % Decrease Liquidation Liquidation value 25.00 % 25.00 % 25.00 % Increase Reinsurance recoverables $ 5,457,649 Fair values are determined in the same manner as future policy benefits Liabilities: Future policy benefits(3) $ 5,452,583 Discounted cash flow Lapse rate(4) 1 % 12 % Decrease Spread over LIBOR(5) 0.12 % 1.10 % Decrease Utilization rate(6) 52 % 97 % Increase Withdrawal rate See table footnote (7) below Mortality rate(8) 0 % 14 % Decrease Equity volatility curve 13 % 24 % Increase (1) Conversely, the impact of a decrease in input would have the opposite impact on fair value as that presented in the table. (2) Includes assets classified as fixed maturities, available-for-sale. (3) Future policy benefits primarily represent general account liabilities for the living benefit features of the Company’s variable annuity contracts which are accounted for as embedded derivatives. Since the valuation methodology for these liabilities uses a range of inputs that vary at the contract level over the cash flow projection period, presenting a range, rather than weighted average, is a more meaningful representation of the unobservable inputs used in the valuation. (4) Lapse rates are adjusted at the contract level based on the in-the-moneyness of the living benefit and reflect other factors, such as the applicability of any surrender charges. Lapse rates are reduced when contracts are more in-the-money. Lapse rates are also generally assumed to be lower for the period where surrender charges apply. (5) The spread over the London Inter-Bank Offered Rate ("LIBOR") swap curve represents the premium added to the proxy for the risk-free rate (LIBOR) to reflect our estimates of rates that a market participant would use to value the living benefit contracts in both the accumulation and payout phases. This spread includes an estimate of NPR, which is the risk that the obligation will not be fulfilled by the Company. NPR is primarily estimated by utilizing the credit spreads associated with issuing funding agreements, adjusted for any illiquidity risk premium. In order to reflect the financial strength ratings of the Company, credit spreads associated with funding agreements, as opposed to credit spread associated with debt, are utilized in developing this estimate because both funding agreements and living benefit contracts are insurance liabilities and are therefore senior to debt. (6) The utilization rate assumption estimates the percentage of contracts that will utilize the benefit during the contract duration and begin lifetime withdrawals at various time intervals from contract inception. The remaining contractholders are assumed to either begin lifetime withdrawals immediately or never utilize the benefit. Utilization assumptions may vary by product type, tax status and age. The impact of changes in these assumptions is highly dependent on the product type, the age of the contractholder at the time of the sale, and the timing of the first lifetime income withdrawal. Range reflects the utilization rate for the vast majority of business with living benefits. (7) The withdrawal rate assumption estimates the magnitude of annual contractholder withdrawals relative to the maximum allowable amount under the contract. These assumptions vary based on the age of the contractholder, the tax status of the contract and the duration since the contractholder began lifetime withdrawals. As of September 30, 2018 and December 31, 2017 , the minimum withdrawal rate assumption is 78% and the maximum withdrawal rate assumption may be greater than 100% . The fair value of the liability will generally increase the closer the withdrawal rate is to 100% and decrease as the withdrawal rate moves further away from 100%. (8) Range reflects the mortality rate for the vast majority of business with living benefits, with policyholders ranging from 50 to 90 years old. While the majority of living benefits have a minimum age requirement, certain benefits do not have an age restriction. This results in contractholders for certain benefits with mortality rates approaching 0% . Based on historical experience, the Company applies a set of age and duration specific mortality rate adjustments compared to standard industry tables. A mortality improvement assumption is also incorporated into the overall mortality table. Interrelationships Between Unobservable Inputs – In addition to the sensitivities of fair value measurements to changes in each unobservable input in isolation, as reflected in the table above, interrelationships between these inputs may also exist, such that a change in one unobservable input may give rise to a change in another, or multiple, inputs. For the discussion of the relationships between unobservable inputs as well as market factors that may affect the range of inputs used in the valuation of Level 3 assets and liabilities, see Note 9 to the Consolidated Financial Statements included in the Company's Annual Report on Form 10-K for the year ended December 31, 2017 . Changes in Level 3 Assets and Liabilities – The following tables describe changes in fair values of Level 3 assets and liabilities as of the dates indicated, as well as the portion of gains or losses included in income attributable to unrealized gains or losses related to those assets and liabilities still held at the end of their respective periods. When a determination is made to classify assets and liabilities within Level 3, the determination is based on significance of the unobservable inputs in the overall fair value measurement. All transfers are based on changes in the observability of the valuation inputs, including the availability of pricing service information that the Company can validate. All transfers are generally reported at the value as of the beginning of the quarter in which transfers occur for any such assets still held at the end of the quarter. During the second quarter of 2018, $81 million of investments in collateralized loan obligations (“CLOs”) reported as “Asset-backed securities” were transferred from Level 3 to Level 2 as market activity, liquidity and overall observability of valuation inputs of CLOs have increased. For further information on valuation processes, see Note 9 to the Consolidated Financial Statements included in the Company's Annual Report on Form 10-K for the year ended December 31, 2017 . Three Months Ended September 30, 2018 Fixed Maturities, Available-for-Sale U. S. Government Foreign Government Bonds Corporate Securities(1) Structured Securities(2) (in thousands) Fair Value, beginning of period $ 24,411 $ 160 $ 62,418 $ 19,661 Total gains (losses) (realized/unrealized): Included in earnings: Realized investment gains (losses), net 0 0 (822 ) 13 Asset administration fees and other income 0 0 0 0 Included in other comprehensive income (loss) 0 0 (2,249 ) (426 ) Net investment income 0 0 154 (11 ) Purchases 935 0 669 20,229 Sales 0 0 0 (10,648 ) Issuances 0 0 0 0 Settlements 0 0 (12,767 ) (2,138 ) Transfers into Level 3(4) 0 0 0 0 Transfers out of Level 3(4) 0 0 (3,936 ) 0 Other(5) 0 (1 ) 0 0 Fair Value, end of period $ 25,346 $ 159 $ 43,467 $ 26,680 Unrealized gains (losses) for assets still held(6): Included in earnings: Realized investment gains (losses), net $ 0 $ 0 $ (1,310 ) $ 0 Asset administration fees and other income $ 0 $ 0 $ 0 $ 0 Three Months Ended September 30, 2018 Equity Securities Short-term Investments Cash Equivalents Other Invested Assets Reinsurance Recoverables (in thousands) Fair Value, beginning of period $ 16,625 $ 333 $ 564 $ 5 $ 3,943,881 Total gains (losses) (realized/unrealized): Included in earnings: Realized investment gains (losses), net(7) 0 0 0 4 (1,210,408 ) Asset administration fees and other income (223 ) 0 0 0 0 Included in other comprehensive income (loss) 0 0 0 0 0 Net investment income 0 0 0 0 0 Purchases 0 5,440 0 0 224,620 Sales (75 ) 0 0 0 0 Issuances 0 0 0 0 0 Settlements 0 (5,316 ) (564 ) 0 0 Transfers into Level 3(4) 0 0 0 0 0 Transfers out of Level 3(4) 0 0 0 (9 ) 0 Other(5) 0 (1 ) 0 0 0 Fair Value, end of period $ 16,327 $ 456 $ 0 $ 0 $ 2,958,093 Unrealized gains (losses) for assets still held(6): Included in earnings: Realized investment gains (losses), net $ 0 $ (1 ) $ 0 $ 4 $ (1,174,501 ) Asset administration fees and other income $ (222 ) $ 0 $ 0 $ 0 $ 0 Three Months Ended September 30, 2018 Receivables from parent and affiliates Future Policy Benefits Policyholders' Account Balances Other Liabilities (in thousands) Fair Value, beginning of period $ 0 $ (3,916,973 ) $ (41,946 ) $ (17,610 ) Total gains (losses) (realized/unrealized): Included in earnings: Realized investment gains (losses), net(7) 0 1,240,116 (21,841 ) (32,501 ) Asset administration fees and other income 0 0 0 0 Included in other comprehensive income (loss) 0 0 0 0 Net investment income 0 0 0 0 Purchases 0 0 0 8,778 Sales 0 0 0 0 Issuances 0 (231,467 ) 0 0 Settlements 0 0 2,940 0 Transfers into Level 3(4) 0 0 0 0 Transfers out of Level 3(4) 0 0 0 0 Other 0 0 0 0 Fair Value, end of period $ 0 $ (2,908,324 ) $ (60,847 ) $ (41,333 ) Unrealized gains (losses) for assets/liabilities still held(6): Included in earnings: Realized investment gains (losses), net $ 0 $ 1,204,459 $ (21,841 ) $ (32,750 ) Asset administration fees and other income $ 0 $ 0 $ 0 $ 0 Nine Months Ended September 30, 2018 Fixed Maturities, Available-for-Sale U. S. Government Foreign Government Bonds Corporate Securities(1) Structured Securities(2) (in thousands) Fair Value, beginning of period $ 19,204 $ 0 $ 75,421 $ 111,028 Total gains (losses) (realized/unrealized): Included in earnings: Realized investment gains (losses), net 0 0 (1,078 ) 34 Asset administration fees and other income 0 0 0 0 Included in other comprehensive income (loss) 0 (15 ) (2,839 ) (528 ) Net investment income 0 1 289 17 Purchases 6,142 0 4,816 31,067 Sales 0 0 (201 ) (10,844 ) Issuances 0 0 0 0 Settlements 0 0 (32,838 ) (10,204 ) Transfers into Level 3(4) 0 0 4,028 13,513 Transfers out of Level 3(4) 0 0 (4,145 ) (107,403 ) Other(5) 0 173 14 0 Fair Value, end of period $ 25,346 $ 159 $ 43,467 $ 26,680 Unrealized gains (losses) for assets still held(6): Included in earnings: Realized investment gains (losses), net $ 0 $ 0 $ (1,385 ) $ 0 Asset administration fees and other income $ 0 $ 0 $ 0 $ 0 Nine Months Ended September 30, 2018 Equity Securities Short-term Investments Cash Equivalents Other Invested Assets Reinsurance Recoverables (in thousands) Fair Value, beginning of period $ 17,525 $ 1,339 $ 0 $ 0 $ 5,457,649 Total gains (losses) (realized/unrealized): Included in earnings: Realized investment gains (losses), net(7) 0 (18 ) 0 0 (3,164,957 ) Asset administration fees and other income (1,123 ) 0 0 0 0 Included in other comprehensive income (loss) 0 0 0 0 0 Net investment income 0 0 0 0 0 Purchases 0 10,710 2,550 0 665,401 Sales (75 ) 0 0 0 0 Issuances 0 0 0 0 0 Settlements 0 (11,560 ) (2,550 ) 0 0 Transfers into Level 3(4) 0 0 0 9 0 Transfers out of Level 3(4) 0 0 0 (9 ) 0 Other(5) 0 (15 ) 0 0 0 Fair Value, end of period $ 16,327 $ 456 $ 0 $ 0 $ 2,958,093 Unrealized gains (losses) for assets still held(6): Included in earnings: Realized investment gains (losses), net $ 0 $ (19 ) $ 0 $ 0 $ (3,000,498 ) Asset administration fees and other income $ (1,123 ) $ 0 $ 0 $ 0 $ 0 Nine Months Ended September 30, 2018 Receivables from parent and affiliates Future Policy Benefits Policyholders' Account Balances Other Liabilities (in thousands) Fair Value, beginning of period $ 0 $ (5,452,583 ) $ (46,651 ) $ 0 Total gains (losses) (realized/unrealized): Included in earnings: Realized investment gains (losses), net(7) 0 3,230,314 (24,687 ) (67,816 ) Asset administration fees and other income 0 0 0 0 Included in other comprehensive income (loss) (20 ) 0 0 0 Net investment income 0 0 0 0 Purchases 0 0 0 26,483 Sales 0 0 0 0 Issuances 0 (686,055 ) 0 0 Settlements 0 0 10,491 0 Transfers into Level 3(4) 6,551 0 0 0 Transfers out of Level 3(4) (6,531 ) 0 0 0 Other 0 0 0 0 Fair Value, end of period $ 0 $ (2,908,324 ) $ (60,847 ) $ (41,333 ) Unrealized gains (losses) for assets/liabilities still held(6): Included in earnings: Realized investment gains (losses), net $ 0 $ 3,065,835 $ (24,688 ) $ (67,796 ) Asset administration fees and other income $ 0 $ 0 $ 0 $ 0 Three Months Ended September 30, 2017 Fixed Maturities, Available-for-Sale U. S. Government Corporate Securities(1) Structured Securities(2)(3) (in thousands) Fair Value, beginning of period $ 11,552 $ 45,375 $ 68,350 Total gains (losses) (realized/unrealized): Included in earnings: Realized investment gains (losses), net 0 (138 ) 13 Asset administration fees and other income 0 0 0 Included in other comprehensive income (loss) 0 115 187 Net investment income 0 30 9 Purchases 3,358 1,841 37,532 Sales 0 0 0 Issuances 0 0 0 Settlements 0 (2,396 ) (3,317 ) Transfers into Level 3(4) 0 3,223 2,767 Transfers out of Level 3(4) 0 (1,099 ) (1,506 ) Other(5) 0 (12 ) 0 Fair Value, end of period $ 14,910 $ 46,939 $ 104,035 Unrealized gains (losses) for assets still held(6): Included in earnings: Realized investment gains (losses), net $ 0 $ (157 ) $ 0 Asset administration fees and other income $ 0 $ 0 $ 0 Three Months Ended September 30, 2017 Equity Securities(3) Short-term Investments Other Invested Assets(3) Reinsurance Recoverables (in thousands) Fair Value, beginning of period $ 17,350 $ 0 $ 0 $ 7,192,057 Total gains (losses) (realized/unrealized): Included in earnings: Realized investment gains (losses), net(7) 0 0 0 (1,377,548 ) Asset administration fees and other income (198 ) 0 0 0 Included in other comprehensive income (loss) (1 ) 0 0 0 Net investment income 0 0 0 0 Purchases 0 3,319 0 223,330 Sales 0 0 0 0 Issuances 0 0 0 0 Settlements 0 (2,607 ) 0 0 Transfers into Level 3(4) 0 0 0 0 Transfers out of Level 3(4) 0 0 0 0 Other(5) 11 0 0 (760,102 ) Fair Value, end of period $ 17,162 $ 712 $ 0 $ 5,277,737 Unrealized gains (losses) for assets/liabilities still held(6): Included in earnings: Realized investment gains (losses), net $ 0 $ 0 $ 0 $ (1,320,981 ) Asset administration fees and other income $ (198 ) $ 0 $ 0 $ 0 Three Months Ended September 30, 2017 Receivables from parent and affiliates Future Policy Benefits Policyholders' Account Balances Other Liabilities (in thousands) Fair Value, beginning of period $ 0 $ (6,424,559 ) $ (31,978 ) $ 0 Total gains (losses) (realized/unrealized): Included in earnings: Realized investment gains (losses), net(7) 0 1,373,736 (6,209 ) 0 Asset administration fees and other income 0 0 0 0 Interest credited to policyholders' account balances 0 0 18,688 0 Included in other comprehensive income (loss) 0 0 0 0 Net investment income 0 0 0 0 Purchases 0 0 0 0 Sales 0 0 0 0 Issuances 0 (221,503 ) 0 0 Settlements 0 0 (17,026 ) 0 Transfers into Level 3(4) 0 0 0 0 Transfers out of Level 3(4) 0 0 0 0 Other 0 0 0 0 Fair Value, end of period $ 0 $ (5,272,326 ) $ (36,525 ) $ 0 Unrealized gains (losses) for assets/liabilities still held(6): Included in earnings: Realized investment gains (losses), net $ 0 $ 1,327,927 $ (6,209 ) $ 0 Asset administration fees and other income $ 0 $ 0 $ 0 $ 0 Interest credited to policyholders' account balances $ 0 $ 0 $ 7,017 $ 0 Nine Months Ended September 30, 2017 Fixed Maturities, Available-for-Sale U. S. Government Corporate Securities(1) Structured Securities(2)(3) (in thousands) Fair Value, beginning of period $ 0 $ 102,556 $ 19,856 Total gains (losses) (realized/unrealized): Included in earnings: Realized investment gains (losses), net 0 (670 ) 4,061 Asset administration fees and other income 0 0 0 Included in other comprehensive income (loss) 0 1,613 (3,455 ) Net investment income 0 89 97 Purchases 11,340 13,666 66,174 Sales 0 (52,197 ) (7,471 ) Issuances 0 0 0 Settlements 0 (15,049 ) (46,117 ) Transfers into Level 3(4) 0 5,204 75,143 Transfers out of Level 3(4) 0 (4,691 ) (4,253 ) Other(5) 3,570 (3,582 ) 0 Fair Value, end of period $ 14,910 $ 46,939 $ 104,035 Unrealized gains (losses) for assets still held(6): Included in earnings: Realized investment gains (losses), net $ 0 $ (1,265 ) $ 0 Asset administration fees and other income $ 0 $ 0 $ 0 Nine Months Ended September 30, 2017 Equity Securities(3) Short-term Investments Other Invested Assets(3) Reinsurance Recoverables (in thousands) Fair Value, beginning of period $ 15,845 $ 0 $ 0 $ 5,474,263 Total gains (losses) (realized/unrealized): Included in earnings: Realized investment gains (losses), net(7) 0 0 0 (115,660 ) Asset administration fees and other income 1,339 0 0 0 Included in other comprehensive income (loss) (33 ) 0 0 0 Net investment income 0 0 0 0 Purchases 0 3,319 0 679,236 Sales 0 0 0 0 Issuances 0 0 0 0 Settlements 0 (2,607 ) 0 0 Transfers into Level 3(4) 0 0 8 0 Transfers out of Level 3(4) 0 0 (8 ) 0 Other(5) 11 0 0 (760,102 ) Fair Value, end of period $ 17,162 $ 712 $ 0 $ 5,277,737 Unrealized gains (losses) for assets/liabilities still held(6): Included in earnings: Realized investment gains (losses), net $ 0 $ 0 $ 0 $ (308,066 ) Asset administration fees and other income $ 1,977 $ 0 $ 0 $ 0 Nine Months Ended September 30, 2017 Receivables from parent and affiliates Future Policy Benefits Policyholders' Account Balances Other Liabilities (in thousands) Fair Value, beginning of period $ 6,493 $ (5,041,007 ) $ (20,337 ) $ 0 Total gains (losses) (realized/unrealized): Included in earnings: Realized investment gains (losses), net(7) 0 422,822 (18,345 ) 0 Asset administration fees and other income 0 0 0 0 Interest credited to policyholders' account balances 0 0 18,688 0 Included in other comprehensive income (loss) 0 0 0 0 Net investment income 0 0 0 0 Purchases 0 0 0 0 Sales 0 0 0 0 Issuances 0 (654,141 ) 0 0 Settlements 0 0 (16,531 ) 0 Transfers into Level 3(4) 0 0 0 0 Transfers out of Level 3(4) (6,493 ) 0 0 0 Other 0 0 0 0 Fair Value, end of period $ 0 $ (5,272,326 ) $ (36,525 ) $ 0 Unrealized gains (losses) for assets/liabilities still held(6): Included in earnings: Realized investment gains (losses), net $ 0 $ 311,314 $ (18,345 ) $ 0 Asset administration fees and other income $ 0 $ 0 $ 0 $ 0 Interest credited to policyholders' account balances $ 0 $ 0 $ 18,688 $ 0 (1) Includes U.S. corporate public, U.S. corporate private, foreign corporate public and foreign corporate private securities. Prior period amounts were aggregated to conform to current period presentation. (2) Includes asset-backed, commercial mortgage-backed and residential mortgage-backed securities. Prior period amounts were aggregated to conform to current period presentation. (3) Prior period amounts have been reclassified to conform to current period presentation. See Note 2 for details. (4) Transfers into or out of any level are generally reported at the value as of the beginning of the quarter in which the transfers occur for any such assets still held at the end of the quarter. (5) Other, except for Reinsurance Recoverables, primarily represents reclassifications of certain assets and liabilities between reporting categories. Other for Reinsurance Recoverables for the three and nine months ended September 30, 2017 , represents the Company's recapture of the risks related to the no-lapse guarantees that were previously reinsured to Universal Prudential Arizona Reinsurance Company ("UPARC") and the discontinuation of embedded derivative accounting, effective July 1, 2017. (6) Unrealized gains or losses related to assets still held at the end of the period do not include amortization or accretion of premiums and discounts. (7) Realized investment gains (losses) on future policy benefits and reinsurance recoverables primarily represent the change in the fair value of the Company's living benefit guarantees on certain of its variable annuity contracts. Fair Value of Financial Instruments The table below presents the carrying amount and fair value by fair value hierarchy level of certain financial instruments that are not reported at fair value. The financial instruments presented below are reported at carrying value on the Company’s Unaudited Interim Consolidated Statements of Financial Position. In some cases, as described below, the carrying amount equals or approximates fair value. September 30, 2018(1) Fair Value Carrying Amount(2) Level 1 Level 2 Level 3 Total Total (in thousands) Assets: Commercial mortgage and other loans $ 0 $ 0 $ 1,170,760 $ 1,170,760 $ 1,177,395 Policy loans 0 0 1,217,608 1,217,608 1,217,608 Cash and cash equivalents 46,322 205,000 0 251,322 251,322 Accrued investment income 0 87,362 0 87,362 87,362 Receivables from parent and affiliates 0 185,075 0 185,075 185,075 Other assets 0 47,029 0 47,029 47,029 Total assets $ 46,322 $ 524,466 $ 2,388,368 $ 2,959,156 $ 2,965,791 Liabilities: Policyholders’ account balances - investment contracts $ 0 $ 1,194,005 $ 271,720 $ 1,465,725 $ 1,474,604 Cash collateral for loaned securities 0 7,585 0 7,585 7,585 Short-term debt to affiliates 0 1,744 0 1,744 1,744 Payables to parent and affiliates 0 166,136 0 166,136 166,136 Other liabilities 0 377,230 0 377,230 377,230 Total liabilities $ 0 $ 1,746,700 $ 271,720 $ 2,018,420 $ 2,027,299 December 31, 2017(1) Fair Value Carrying Amount(2) Level 1 Level 2 Level 3 Total Total (in thousands) Assets: Commercial mortgage and other loans $ 0 $ 0 $ 1,111,625 $ 1,111,625 $ 1,083,419 Policy loans 0 0 1,161,101 1,161,101 1,161,101 Cash and cash equivalents 36,562 148,000 0 184,562 184,562 Accrued investment income 0 82,341 0 82,341 82,341 Receivables from parent and affiliates 0 167,545 0 167,545 167,545 Other assets 0 50,407 0 50,407 50,407 Total assets $ 36,562 $ 448,293 $ 2,272,726 $ 2,757,581 $ 2,729,375 Liabilities: Policyholders’ account balances - investment contracts $ 0 $ 1,178,583 $ 276,435 $ 1,455,018 $ 1,458,599 Cash collateral for loaned securities 0 33,169 0 33,169 33,169 Short-term debt to affiliates 0 0 0 0 0 Payables to parent and affiliates 0 223,550 0 223,550 223,550 Other liabilities 0 362,592 0 362,592 362,592 Total liabilities $ 0 $ 1,797,894 $ 276,435 $ 2,074,329 $ 2,077,910 (1) The information presented as of December 31, 2017 , excludes certain hedge funds, private equity funds and other funds that were accounted for using the cost method and for which the fair value was measured at NAV per share (or its equivalent) as a practical expedient. The fair value and the carrying value of these cost method investments were $49 million and $41 million , respectively. Due to the adoption of ASU 2016-01 effective January 1, 2018, these assets are carried at fair value at each reporting date with changes in fair value reported in “Other income.” Therefore, as of September 30, 2018 , these assets are excluded from this table but are reported in the fair value recurring measurement table. (2) Carrying values presented herein differ from those in the Company’s Unaudited Interim Consolidated

Income Taxes

Income Taxes	9 Months Ended
	Sep. 30, 2018
Income Tax Disclosure [Abstract]
Income Taxes	INCOME TAXES The Company uses a full year projected effective tax rate approach to calculate year-to-date taxes. In addition, certain items impacting total income tax expense are recorded in the periods in which they occur. The projected effective tax rate is the ratio of projected "Income tax expense (benefit)" divided by projected "Income (loss) from operations before income taxes and equity in earnings of operating joint venture." Taxes attributable to the operating joint venture are recorded within "Equity in earnings of operating joint ventures, net of taxes." The interim period tax expense (or benefit) is the difference between the year-to-date income tax provision and the amounts reported for the previous interim periods of the fiscal year. The Company's income tax provision, on a consolidated basis, amounted to an income tax benefit of $18.5 million , or (37.6)% of income (loss) before income taxes and equity in earnings of operating joint ventures, in the first nine months of 2018, compared to $69.1 million , or (49.1)% , in the first nine months of 2017. The Company's 2018 effective tax rates differed from the U.S. statutory rate of 21% primarily due to non-taxable investment income, tax credits and unique items described below that were recorded in the periods in which they occurred. The Company's 2017 effective tax rates differed from the U.S. statutory rate of 35% primarily due to non-taxable investment income, tax credits, and domestic production activities deduction. The Tax Cuts and Jobs Act of 2017 ("Tax Act of 2017") modified the methodology for determining the dividend received deduction and will likely reduce the tax benefit of non-taxable investment income in periods starting after December 31, 2017. 2018 Industry Issue Resolution (IIR) - In August 2018, the Internal Revenue Service (“IRS”) released an IIR to provide guidance on the tax reserving for guaranteed benefits within variable annuity contracts and principle-based reserves on certain life insurance contracts. Adopting the IIR methodology resulted in an acceleration of taxable income for the Company’s 2017 tax return for which the tax expense was calculated at 35% and an increase in future tax deduction for the same amount to be realized at 21% netting to a $5 million increase to total tax expense for the first nine months of 2018. Resolution of tax audit issues - During the third quarter of 2018, the Company reached an agreement with the IRS to resolve outstanding tax audit issues for tax years 2015 and 2016 and partially for 2017 which resulted in a $21 million increase to our income tax expense for the first nine months of 2018. U.S. Tax Cuts and Jobs Act of 2017 - On December 22, 2017, the Tax Act of 2017 was enacted into U.S. law. As a result, the Company recognized a $20.2 million tax benefit in “Total income tax expense (benefit)” in the Company’s Consolidated Statements of Operations for the year ended December 31, 2017, which is inclusive of the impacts to prior periods due to the revision as discussed in Note 11. In accordance with SEC Staff Accounting Bulletin ("SAB") 118, the Company recorded the effects of the Tax Act of 2017 using reasonable estimates due to the need for further analysis of the provisions within the Tax Act of 2017 and collection, preparation and analysis of relevant data necessary to complete the accounting. The Company has not fully completed its accounting for the tax effects of the Tax Act of 2017. As the Company completes the collection, preparation and analysis of data relevant to the Tax Act of 2017, and interprets any additional guidance issued by the IRS, U.S. Department of the Treasury, or other standard-setting organizations, the Company may make adjustments to these provisional amounts. These adjustments may materially impact the Company’s provision for income taxes in the period in which the adjustments are made. During the first nine months of 2018, the Company recognized a $0.2 million increase in income tax expense primarily related to refinements of our provisional estimates.

Reinsurance

Reinsurance	9 Months Ended
	Sep. 30, 2018
Reinsurance Disclosures [Abstract]
Reinsurance	REINSURANCE The Company participates in reinsurance with its affiliates Prudential Life Insurance Company of Taiwan Inc. (“Prudential of Taiwan”), Prudential Arizona Reinsurance Captive Company (“PARCC”), Prudential Arizona Reinsurance Term Company (“PAR Term”), Prudential Arizona Reinsurance Universal Company (“PAR U”), Prudential Universal Reinsurance Company ("PURC"), Prudential Term Reinsurance Company (“Term Re”), PALAC, Gibraltar Universal Life Reinsurance Company ("GUL Re"), Dryden Arizona Reinsurance Term Company (“DART”), its parent company Prudential Insurance, as well as third parties, and participated in reinsurance with its affiliate Pruco Re through March 31, 2016 and its affiliate UPARC through June 30, 2017 . The reinsurance agreements provide risk diversification and additional capacity for future growth, limit the maximum net loss potential, manage statutory capital, facilitate the Company's capital market hedging program, and align accounting methodology for the assets and liabilities of living benefit guarantees contained in annuities contracts. See Note 1 for additional information on the change effective April 1, 2016 related to the Variable Annuities Recapture. Life reinsurance is accomplished through various plans of reinsurance, primarily yearly renewable term and coinsurance. Reinsurance ceded arrangements do not discharge the Company as the primary insurer. Ceded balances would represent a liability of the Company in the event the reinsurers were unable to meet their obligations to the Company under the terms of the reinsurance agreements. The Company believes a material reinsurance liability resulting from such inability of reinsurers to meet their obligations is unlikely. Reserves related to reinsured long-duration contracts are accounted for using assumptions consistent with those used to account for the underlying contracts. Amounts recoverable from reinsurers for long-duration reinsurance arrangements are estimated in a manner consistent with the claim liabilities and policy benefits associated with the reinsured policies. Reinsurance premiums ceded for universal life products are accounted for as a reduction of policy charges and fee income. Reinsurance premiums ceded for term insurance products are accounted for as a reduction of premiums. Realized investment gains and losses include the impact of reinsurance agreements, particularly reinsurance agreements involving living benefit guarantees. The Company has entered into reinsurance agreements to transfer the risk related to the living benefit guarantees on variable annuities to PALAC excluding the PLNJ business which was reinsured to Prudential Insurance. See Note 1 for additional information on the change effective April 1, 2016 related to the Variable Annuities Recapture. Through June 30, 2017 , the Company had an agreement with UPARC to reinsure a portion of the no-lapse guarantee provision on certain universal life products. See below for additional information on the change effective July 1, 2017 related to the recapture of the no-lapse guarantee risks that were previously reinsured to UPARC. These reinsurance agreements are derivatives and have been accounted for in the same manner as embedded derivatives and the changes in the fair value of these derivatives are recognized through “Realized investment gains (losses), net”. For additional information related to the accounting for embedded derivatives, see Note 10 to the Consolidated Financial Statements included in the Company's Annual Report on Form 10-K for the year ended December 31, 2017. Reinsurance amounts included in the Company’s Unaudited Interim Consolidated Statements of Financial Position as of September 30, 2018 and December 31, 2017 were as follows: September 30, 2018 December 31, 2017 (in thousands) Reinsurance recoverables(1) $ 31,430,148 $ 32,521,264 Policy loans (129,636 ) (124,843 ) Deferred policy acquisition costs (7,175,536 ) (6,832,729 ) Deferred sales inducements (570,514 ) (638,065 ) Other assets(2) 168,397 205,430 Policyholders’ account balances 4,997,598 5,004,885 Future policy benefits 3,277,715 3,301,841 Other liabilities(1)(3) 628,105 605,155 (1) Prior period amounts in the table above have been revised to correct previously reported numbers. These prior periods revisions have also been reflected in the Unaudited Interim Consolidated Financial Statements. See Note 11 for a more detailed description of the revision. (2) “Other assets” includes $0.1 million of unaffiliated activity as of both September 30, 2018 and December 31, 2017 . (3) “Other liabilities” includes $73 million of unaffiliated activity as of both September 30, 2018 and December 31, 2017 . The reinsurance recoverables by counterparty are broken out below: September 30, 2018 December 31, 2017 (in thousands) PAR U $ 11,292,102 $ 11,111,272 PALAC 6,351,987 8,388,988 PURC 3,980,335 3,577,962 PARCC 2,503,689 2,546,673 GUL Re 1,975,365 1,772,950 PAR Term 1,700,457 1,559,618 Prudential of Taiwan 1,411,997 1,406,686 Term Re 1,187,127 966,509 Prudential Insurance(1) 922,025 1,118,004 DART 79,061 0 Unaffiliated 26,003 72,602 Total reinsurance recoverables $ 31,430,148 $ 32,521,264 (1) Prior period amounts in the table above have been revised to correct previously reported numbers. These prior periods revisions have also been reflected in the Unaudited Interim Consolidated Financial Statements. See Note 11 for a more detailed description of the revision. Reinsurance amounts, included in the Company’s Unaudited Interim Consolidated Statements of Operations and Comprehensive Income (Loss) for the three and nine months ended September 30, were as follows: Three Months Ended September 30, Nine Months Ended September 30, 2018 2017(8) 2018 2017(8) (in thousands) Premiums: Direct $ 451,790 $ 428,684 $ 1,343,358 $ 1,280,293 Assumed(1) 57 63 175 194 Ceded(2) (437,696 ) (413,623 ) (1,306,564 ) (1,242,529 ) Net premiums 14,151 15,124 36,969 37,958 Policy charges and fee income: Direct 843,551 816,191 2,407,062 2,593,583 Assumed 125,079 127,493 369,483 351,464 Ceded(3) (861,704 ) (814,579 ) (2,371,460 ) (2,804,107 ) Net policy charges and fee income 106,926 129,105 405,085 140,940 Net investment income: Direct 87,260 87,605 249,366 269,999 Assumed 404 376 1,162 1,104 Ceded (1,478 ) (1,459 ) (4,778 ) (3,925 ) Net investment income 86,186 86,522 245,750 267,178 Asset administration fees: Direct 88,721 86,716 262,449 251,709 Assumed 0 0 0 0 Ceded (84,994 ) (82,161 ) (251,705 ) (238,577 ) Net asset administration fees 3,727 4,555 10,744 13,132 Other income: Direct 20,432 16,678 49,778 46,617 Assumed(4) 57 (25 ) (133 ) 184 Ceded (219 ) 19 (46 ) (4 ) Amortization of reinsurance income 1,493 1,348 7,538 1,348 Net other income 21,763 18,020 57,137 48,145 Realized investment gains (losses), net: Direct 1,234,853 1,390,083 3,213,137 442,408 Assumed 0 0 0 0 Ceded(5) (1,284,276 ) (1,665,269 ) (3,348,492 ) (473,583 ) Realized investment gains (losses), net (49,423 ) (275,186 ) (135,355 ) (31,175 ) Policyholders’ benefits (including change in reserves): Direct 636,021 560,252 1,932,194 1,787,338 Assumed(6) 122,727 154,389 381,934 402,025 Ceded(7) (748,925 ) (659,697 ) (2,212,128 ) (2,247,598 ) Net policyholders’ benefits (including change in reserves) 9,823 54,944 102,000 (58,235 ) Interest credited to policyholders’ account balances: Direct 137,309 139,715 383,521 249,063 Assumed 34,414 33,858 105,780 101,687 Ceded (127,014 ) (135,377 ) (361,239 ) (221,827 ) Net interest credited to policyholders’ account balances 44,709 38,196 128,062 128,923 Reinsurance expense allowances and general and administrative expenses, net of capitalization and amortization (420,813 ) (502,172 ) (1,200,005 ) (968,627 ) (1) "Premiums assumed" includes $0.1 million of unaffiliated activity for both the three months ended September 30, 2018 and 2017 , and $0.2 million of unaffiliated activity for both the nine months ended September 30, 2018 and 2017 . (2) "Premiums ceded" includes $(0.1) million and $0 million of unaffiliated activity for both the three and nine months ended September 30, 2018 and 2017 , respectively. (3) "Policy charges and fee income ceded" includes $(8) million and $(4) million of unaffiliated activity for the three months ended September 30, 2018 and 2017 , respectively, and $(14) million and $(5) million for the nine months ended September 30, 2018 and 2017 , respectively. (4) "Other income assumed" includes $(0.1) million and $0 million of unaffiliated activity for the three months ended September 30, 2018 and 2017 , respectively, and $(0.1) million and $0.2 million for the nine months ended September 30, 2018 and 2017 , respectively. (5) “Realized investment gains (losses), net ceded” includes $(33) million and $(49) million of unaffiliated activity for the three months ended September 30, 2018 and 2017 , respectively, and $(81) million and $(26) million for the nine months ended September 30, 2018 and 2017 , respectively. (6) "Policyholders' benefits (including change in reserves) assumed" includes $0.1 million and $0 million of unaffiliated activity for the three months ended September 30, 2018 and 2017 , respectively, and $0 million and $0.4 million for the nine months ended September 30, 2018 and 2017 , respectively. (7) "Policyholders' benefits (including change in reserves) ceded" includes $(4) million and $(1) million of unaffiliated activity for the three months ended September 30, 2018 and 2017 , respectively, and $(8) million and $5 million for the nine months ended September 30, 2018 and 2017 , respectively. (8) Prior period amounts in the table above have been revised to correct previously reported numbers. These prior periods revisions have also been reflected in the Unaudited Interim Consolidated Financial Statements. See Note 11 for a more detailed description of the revision. The gross and net amounts of life insurance face amount in force as of September 30, 2018 and 2017 were as follows: 2018 2017 (in thousands) Direct gross life insurance face amount in force $ 922,386,427 $ 868,069,034 Assumed gross life insurance face amount in force 41,088,914 42,061,830 Reinsurance ceded (889,021,800 ) (844,683,670 ) Net life insurance face amount in force $ 74,453,541 $ 65,447,194 Information regarding significant affiliated reinsurance agreements is described below. PAR U Pruco Life reinsures an amount equal to 70% of all the risks associated with Universal Protector policies having no-lapse guarantees as well as certain of its universal policies, with effective dates prior to January 1, 2011 . Effective July 1, 2011 , PLNJ reinsures an amount equal to 95% of all the risks associated with Universal Protector policies having no-lapse guarantees as well as certain of its universal policies, excluding those policies that are subject to principles-based reserving. On January 2, 2013 , Pruco Life began to assume Guaranteed Universal Life ("GUL") business from Prudential Insurance in connection with the acquisition of The Hartford Life Business. The GUL business assumed from Prudential Insurance was subsequently retroceded to PAR U. PALAC Effective April 1, 2016 , the Company entered into a reinsurance agreement with PALAC to reinsure its variable annuity base contracts, along with the living benefit guarantees, excluding business reinsured externally and the PLNJ business, which was reinsured to Prudential Insurance. See Note 1 for additional information related to the Variable Annuities Recapture. PURC Pruco Life reinsures an amount equal to 70% of all the risks associated with its Universal Protector policies having no-lapse guarantees as well as certain of its universal policies, with effective dates from January 1, 2011 through December 31, 2013 , with PURC and 95% of all the risks associated with Universal Protector policies having no-lapse guarantees, as well as certain of its universal policies, with effective dates from January 1, 2014 through December 31, 2016 . PARCC The Company reinsures 90% of the risks under its term life insurance policies, with effective dates prior to January 1, 2010 through an automatic coinsurance agreement with PARCC. GUL Re Effective January 1, 2017 , Pruco Life entered into an automatic coinsurance agreement with GUL Re to reinsure an amount equal to 95% of all the risks associated with Universal Protector policies having no-lapse guarantees, as well as certain of its universal policies, with effective dates on or after January 1, 2017 , excluding those policies that are subject to principles-based reserving. Effective July 1, 2017 , Pruco Life amended this agreement to include 30% of Universal Protector policies having no-lapse guarantees as well as certain of its universal policies with effective dates prior to January 1, 2014 . PAR Term The Company reinsures 95% of the risks under its term life insurance policies with effective dates January 1, 2010 through December 31, 2013 , through an automatic coinsurance agreement with PAR Term. Prudential of Taiwan On January 31, 2001 , Pruco Life transferred all of its assets and liabilities associated with its Taiwan branch, including its Taiwan insurance book of business, to Prudential of Taiwan, an affiliated company. The mechanism used to transfer this block of business in Taiwan is referred to as a “full acquisition and assumption” transaction. Under this mechanism, Pruco Life is jointly liable with Prudential of Taiwan for two years from the giving of notice to all obligees for all matured obligations and for two years after the maturity date of not-yet-matured obligations. Prudential of Taiwan is also contractually liable, under indemnification provisions of the transaction, for any liabilities that may be asserted against Pruco Life. The transfer of the insurance related assets and liabilities was accounted for as a long-duration coinsurance transaction under U.S. GAAP. Under this accounting treatment, the insurance related liabilities remain on the books of Pruco Life and an offsetting reinsurance recoverable is established. These assets and liabilities are denominated in U.S. dollars. Term Re The Company reinsures 95% of the risks under its term life insurance policies, with effective dates on or after January 1, 2014 through December 31, 2017 , through an automatic coinsurance agreement with Term Re. Prudential Insurance The Company has a yearly renewable term reinsurance agreement with Prudential Insurance and reinsures the majority of all mortality risks not otherwise reinsured. Effective July 1, 2017 , this agreement has been terminated for certain new business, primarily Universal Life insurance policies. Effective July 1, 2017 , the Company will reinsure a portion of the mortality risk directly to third-party reinsurers and retain all of the non-reinsured portion of the mortality risk. On January 2, 2013 , Pruco Life began to assume GUL business from Prudential Insurance in connection with the acquisition of the Hartford Financial Services Group, Inc. ("Hartford Financial"). The GUL business assumed from Prudential Insurance was subsequently retroceded to PAR U. In May 2018, Hartford Financial sold a group of operating subsidiaries, which includes two of Prudential Insurance's counterparties to these reinsurance arrangements. There is no impact to the terms, rights or obligations of Prudential Insurance, or operation of these reinsurance arrangements, as a result of this change in control of such counterparties. Similarly, there is no impact to the Company's reinsurance arrangements with respect to such GUL business as a result of this change in control. The Company has reinsured a group annuity contract with Prudential Insurance, in consideration for a single premium payment by the Company, providing reinsurance equal to 100% of all payments due under the contract. Effective April 1, 2016 , PLNJ entered into a reinsurance agreement with Prudential Insurance to reinsure its variable annuity base contracts, along with the living benefit guarantees. See Note 1 for additional information related to the Variable Annuities Recapture. DART Effective January 1, 2018 , the Company entered into an automatic coinsurance agreement with DART to reinsure an amount equal to 95% of the risks associated with its term life insurance policies with effective dates on or after January 1, 2018 . UPARC Through June 30, 2017 , Pruco Life reinsured Universal Protector policies having no-lapse guarantees with effective dates through December 31, 2013 with UPARC. UPARC reinsured an amount equal to 27% of the net amount at risk related to the first $1 million in face amount plus 30% of the net amount at risk related to the face amount in excess of $1 million as well as 30% of the risk of uncollectible policy charges and fees associated with the no-lapse guarantee provision of these policies. Effective July 1, 2017 , Pruco Life recaptured the risks related to the no-lapse guarantees that were previously reinsured to UPARC and subsequently included these risks as part of the business ceded to GUL Re under the amended coinsurance agreement on that date. As part of the recapture, the Company received invested assets of $557 million as consideration from UPARC and unwound the associated reinsurance recoverable of $760 million . As a result, the Company recognized a loss of $203 million immediately. Pruco Re Through March 31, 2016 , the Company, including its wholly-owned subsidiary PLNJ, entered into various automatic coinsurance agreements with Pruco Re to reinsure its living benefit guarantees sold on certain of its annuities. See Note 1 for additional information on the change effective April 1, 2016 related to the Variable Annuities Recapture. Information regarding significant third party reinsurance arrangements is described below. Union Hamilton Between April 1, 2015 and December 31, 2016 , the Company, excluding its subsidiaries, reinsured approximately 50% of the new business related to “highest daily” living benefits rider guarantees on HDI v.3.0 product, available with Prudential Premier Retirement Variable Annuity, to Union Hamilton. During that time period, the Company ceded approximately $2.9 billion of new rider premiums to Union Hamilton under this agreement. This reinsurance remains in force for the duration of the underlying annuity contracts. New sales of HDI v.3.0 subsequent to December 31, 2016 are not covered by this external reinsurance agreement. As of September 30, 2018 , $3.2 billion of HDI v.3.0 account values are reinsured to Union Hamilton.

Equity

Equity	9 Months Ended
	Sep. 30, 2018
Equity [Abstract]
Equity	EQUITY Accumulated Other Comprehensive Income (Loss) The balance of and changes in each component of “Accumulated other comprehensive income (loss)” for the nine months ended September 30, 2018 and 2017 , are as follows: Accumulated Other Comprehensive Income (Loss) Foreign Currency Translation Adjustments Net Unrealized Investment Gains (Losses)(1) Total Accumulated Other Comprehensive Income (Loss) (in thousands) Balance, December 31, 2017 $ (234 ) $ 165,580 $ 165,346 Change in OCI before reclassifications (12,379 ) (254,515 ) (266,894 ) Amounts reclassified from AOCI 0 (5,268 ) (5,268 ) Income tax benefit (expense) 2,599 54,557 57,156 Cumulative effect of adoption of ASU 2016-01 0 (1,539 ) (1,539 ) Cumulative effect of adoption of ASU 2018-02 (50 ) 30,499 30,449 Balance, September 30, 2018 $ (10,064 ) $ (10,686 ) $ (20,750 ) Accumulated Other Comprehensive Income (Loss) Foreign Currency Translation Adjustments Net Unrealized Investment Gains (Losses)(1) Total Accumulated Other Comprehensive Income (Loss) (in thousands) Balance, December 31, 2016 $ (402 ) $ 71,377 $ 70,975 Change in OCI before reclassifications 224 147,980 148,204 Amounts reclassified from AOCI 0 (28,669 ) (28,669 ) Income tax benefit (expense) (78 ) (41,759 ) (41,837 ) Balance, September 30, 2017 $ (256 ) $ 148,929 $ 148,673 (1) Includes cash flow hedges of $(8) million and $(18) million as of September 30, 2018 and December 31, 2017 , respectively, and $1 million and $41 million as of September 30, 2017 and December 31, 2016 , respectively . Reclassifications out of Accumulated Other Comprehensive Income (Loss) Three Months Ended September 30, Nine Months Ended September 30, 2018 2017 2018 2017 (in thousands) Amounts reclassified from AOCI (1)(2): Net unrealized investment gains (losses): Cash flow hedges - Currency/Interest rate(3) $ 2,682 $ (2,962 ) $ 10,443 $ (2,175 ) Net unrealized investment gains (losses) on available-for-sale securities(4) (1,048 ) 31,556 (5,175 ) 30,844 Total net unrealized investment gains (losses) 1,634 28,594 5,268 28,669 Total reclassifications for the period $ 1,634 $ 28,594 $ 5,268 $ 28,669 (1) All amounts are shown before tax. (2) Positive amounts indicate gains/benefits reclassified out of AOCI. Negative amounts indicate losses/costs reclassified out of AOCI. (3) See Note 4 for additional information on cash flow hedges. (4) See table below for additional information on unrealized investment gains (losses), including the impact on deferred policy acquisition costs and other costs, future policy benefits, policyholders’ account balances and other liabilities. Net Unrealized Investment Gains (Losses) Net unrealized investment gains (losses) on securities classified as available-for-sale, certain other invested assets and other assets are included in the Company’s Unaudited Interim Consolidated Statements of Financial Position as a component of AOCI. Changes in these amounts include reclassification adjustments to exclude from “Other comprehensive income (loss)” those items that are included as part of “Net income” for a period that had been part of “Other comprehensive income (loss)” in earlier periods. The amounts for the periods indicated below, split between amounts related to fixed maturity securities on which an OTTI loss has been recognized, and all other net unrealized investment gains (losses), are as follows: Net Unrealized Investment Gains (Losses) on Fixed Maturity Securities on which an OTTI loss has been recognized Net Unrealized Gains (Losses) on Investments Deferred Policy Acquisition Costs and Other Costs Future Policy Benefits, Policyholders' Account Balances and Other Liabilities Deferred Income Tax (Liability) Benefit Accumulated Other Comprehensive Income (Loss) Related To Net Unrealized Investment Gains (Losses) (in thousands) Balance, December 31, 2017 $ 1,609 $ (99 ) $ 22 $ (682 ) $ 850 Net investment gains (losses) on investments arising during the period (1,614 ) 0 0 339 (1,275 ) Reclassification adjustment for (gains) losses included in net income (175 ) 0 0 37 (138 ) Reclassification adjustment for OTTI (gains) losses excluded from net income(1) (128 ) 0 0 0 (128 ) Impact of net unrealized investment (gains) losses on deferred policy acquisition costs and other costs 0 (183 ) 0 38 (145 ) Impact of net unrealized investment (gains) losses on future policy benefits, policyholders' account balances and other liabilities 0 0 206 (43 ) 163 Balance, September 30, 2018 $ (308 ) $ (282 ) $ 228 $ (311 ) $ (673 ) (1) Represents "transfers in" related to the portion of OTTI losses recognized during the period that were not recognized in earnings for securities with no prior OTTI loss. All Other Net Unrealized Investment Gains (Losses) in AOCI Net Unrealized Gains (Losses) on Investments(1) Deferred Policy Acquisition Costs and Other Costs Future Policy Benefits, Policyholders' Account Balances and Other Liabilities Deferred Income Tax (Liability) Benefit Accumulated Other Comprehensive Income (Loss) Related To Net Unrealized Investment Gains (Losses) (in thousands) Balance, December 31, 2017 $ 272,809 $ 1,832 $ (28,998 ) $ (80,913 ) $ 164,730 Net investment gains (losses) on investments arising during the period (278,583 ) 0 0 58,504 (220,079 ) Reclassification adjustment for (gains) losses included in net income (5,093 ) 0 0 1,070 (4,023 ) Reclassification adjustment for OTTI (gains) losses excluded from net income(2) 128 0 0 0 128 Impact of net unrealized investment (gains) losses on deferred policy acquisition costs and other costs 0 (49,664 ) 0 10,431 (39,233 ) Impact of net unrealized investment (gains) losses on future policy benefits, policyholders' account balances and other liabilities 0 0 75,323 (15,819 ) 59,504 Cumulative effect of adoption of ASU 2016-01 (2,368 ) 0 0 829 (1,539 ) Cumulative effect of adoption of ASU 2018-02 0 0 0 30,499 30,499 Balance, September 30, 2018 $ (13,107 ) $ (47,832 ) $ 46,325 $ 4,601 $ (10,013 ) (1) Includes cash flow hedges. See Note 4 for information on cash flow hedges. (2) Represents "transfers out" related to the portion of OTTI losses recognized during the period that were not recognized in earnings for securities with no prior OTTI loss.

Related Party Transactions

Related Party Transactions	9 Months Ended
	Sep. 30, 2018
Related Party Transactions [Abstract]
Related Party Transactions	RELATED PARTY TRANSACTIONS The Company has extensive transactions and relationships with Prudential Insurance and other affiliates. Although we seek to ensure that these transactions and relationships are fair and reasonable, it is possible that the terms of these transactions are not the same as those that would result from transactions among unrelated parties. Expense Charges and Allocations Many of the Company’s expenses are allocations or charges from Prudential Insurance or other affiliates. These expenses can be grouped into general and administrative expenses and agency distribution expenses. The Company’s general and administrative expenses are charged to the Company using allocation methodologies based on business production processes. Management believes that the methodology is reasonable and reflects costs incurred by Prudential Insurance to process transactions on behalf of the Company. The Company operates under service and lease agreements whereby services of officers and employees, supplies, use of equipment and office space are provided by Prudential Insurance. The Company reviews its allocation methodology periodically which it may adjust accordingly. General and administrative expenses include allocations of stock compensation expenses related to a stock-based awards program and a deferred compensation program issued by Prudential Financial. The expense charged to the Company for the stock-based awards program was $0.3 million and $0.2 million for the three months ended September 30, 2018 and 2017 , respectively, and $1 million and $0.9 million for the nine months ended September 30, 2018 and 2017 , respectively. The expense charged to the Company for the deferred compensation program was $1 million and $2 million for the three months ended September 30, 2018 and 2017 , respectively, and $6 million and $7 million for the nine months ended September 30, 2018 and 2017 , respectively. The Company is charged for its share of employee benefit expenses. These expenses include costs for funded and non-funded contributory and non-contributory defined benefit pension plans. Some of these benefits are based on final earnings and length of service while others are based on an account balance, which takes into consideration age, service and earnings during a career. The Company’s share of net expense for the pension plans was $5 million and $6 million for the three months ended September 30, 2018 and 2017 , respectively, and $17 million and $19 million for the nine months ended September 30, 2018 and 2017 , respectively. The Company is also charged for its share of the costs associated with welfare plans issued by Prudential Insurance. These expenses include costs related to medical, dental, life insurance and disability. The Company's share of net expense for the welfare plans was $7 million for both the three months ended September 30, 2018 and 2017 , and $21 million for both the nine months ended September 30, 2018 and 2017 . Prudential Insurance sponsors voluntary savings plans for its employee 401(k) plans. The plans provide for salary reduction contributions by employees and matching contributions by the Company of up to 4% of annual salary. The Company’s expense for its share of the voluntary savings plan was $2 million and $3 million for the three months ended September 30, 2018 and 2017 , respectively, and $7 million and $8 million for the nine months ended September 30, 2018 and 2017 , respectively. The Company is charged distribution expenses from Prudential Insurance’s agency network for both its domestic life and annuity products through a transfer pricing agreement, which is intended to reflect a market-based pricing arrangement. The Company pays commissions and certain other fees to Prudential Annuities Distributors, Inc. (“PAD”) in consideration for PAD’s marketing and underwriting of the Company’s annuity products. Commissions and fees are paid by PAD to broker-dealers who sell the Company’s annuity products. Commissions and fees paid by the Company to PAD were $191 million and $150 million for the three months ended September 30, 2018 and 2017 , respectively, and $554 million and $465 million for the nine months ended September 30, 2018 and 2017 , respectively. The Company is charged for its share of corporate expenses incurred by Prudential Financial to benefit its businesses, such as advertising, executive oversight, external affairs and philanthropic activity. The Company’s share of corporate expenses was $17 million for both the three months ended September 30, 2018 and 2017 , and $54 million and $49 million for the nine months ended September 30, 2018 and 2017 , respectively. Corporate Owned Life Insurance The Company has sold five Corporate Owned Life Insurance (“COLI”) policies to Prudential Insurance, and one to Prudential Financial. The cash surrender value included in separate accounts for these COLI policies was $3,884 million at September 30, 2018 and $3,688 million at December 31, 2017 . Fees related to these COLI policies were $11 million for both the three months ended September 30, 2018 and 2017 and $34 million for both the nine months ended September 30, 2018 and 2017 . The Company retains the majority of the mortality risk associated with these COLI policies up to $3.5 million per policy. Affiliated Investment Management Expenses In accordance with an agreement with PGIM, Inc. ("PGIM"), the Company pays investment management expenses to PGIM who acts as investment manager to certain Company general account and separate account assets. Investment management expenses paid to PGIM related to this agreement were $3 million and $4 million for the three months ended September 30, 2018 and 2017 , respectively, and $10 million and $11 million for the nine months ended September 30, 2018 and 2017 , respectively. These expenses are recorded as “Net investment income” in the Company's Unaudited Interim Consolidated Statements of Operations and Comprehensive Income (Loss). Derivative Trades In its ordinary course of business, the Company enters into OTC derivative contracts with an affiliate, PGF. For these OTC derivative contracts, PGF has a substantially equal and offsetting position with an external counterparty. See Note 4 for additional information. Joint Ventures The Company has made investments in joint ventures with certain subsidiaries of Prudential Financial. "Other invested assets" includes $95 million and $79 million as of September 30, 2018 and December 31, 2017 , respectively. "Net investment income" related to these ventures includes a gain of $2 million and $1 million for the three months ended September 30, 2018 and 2017 , respectively, and a gain of $4 million and $7 million for the nine months ended September 30, 2018 and 2017 , respectively. Affiliated Asset Administration Fee Income The Company has a revenue sharing agreement with AST Investment Services, Inc. ("ASTISI") and PGIM Investments LLC ("PGIM Investments") whereby the Company receives fee income based on policyholders' separate account balances invested in the Advanced Series Trust. Income received from ASTISI and PGIM Investments related to this agreement was $85 million and $82 million for the three months ended September 30, 2018 and 2017 , respectively, and $252 million and $239 million for the nine months ended September 30, 2018 and 2017 , respectively. These revenues are recorded as “Asset administration fees” in the Company's Unaudited Interim Consolidated Statements of Operations and Comprehensive Income (Loss). The Company has a revenue sharing agreement with PGIM Investments, whereby the Company receives fee income based on policyholders' separate account balances invested in The Prudential Series Fund. Income received from PGIM Investments related to this agreement was $3 million and $4 million for the three months ended September 30, 2018 and 2017 , respectively, and $7 million and $11 million for the nine months ended September 30, 2018 and 2017 , respectively. These revenues are recorded as “Asset administration fees” in the Company's Unaudited Interim Consolidated Statements of Operations and Comprehensive Income (Loss). Affiliated Notes Receivable Affiliated notes receivable included in “Receivables from parent and affiliates” at September 30, 2018 and December 31, 2017 were as follows: Maturity Dates Interest Rates September 30, 2018 December 31, 2017 (in thousands) U.S. dollar floating rate notes 2028 3.74% - 3.83 % $ 6,507 $ 6,551 U.S. dollar fixed rate notes 2022 - 2027 0.00% - 14.85 % 120,674 126,020 Total long-term notes receivable - affiliated(1) $ 127,181 $ 132,571 (1) All long-term notes receivable may be called for prepayment prior to the respective maturity dates under specified circumstances. The affiliated notes receivable shown above are classified as available-for-sale securities and other trading assets carried at fair value. The Company monitors the internal and external credit ratings of these loans and loan performance. The Company also considers any guarantees made by Prudential Insurance for loans due from affiliates. Accrued interest receivable related to these loans was $0.9 million and $1 million at September 30, 2018 and December 31, 2017 , respectively, and is included in “Other assets”. Revenues related to these assets were $1 million for both the three months ended September 30, 2018 and 2017 , and $4 million for both the nine months ended September 30, 2018 and 2017 , and are included in “Other income”. Affiliated Asset Transfers The Company participates in affiliated asset trades with parent and sister companies. Book and market value differences for trades with a parent and sister are recognized within "Additional paid-in capital" (“APIC”) and "Realized investment gains (losses), net", respectively. The table below shows affiliated asset trades for the nine months ended September 30, 2018 and for the year ended December 31, 2017 . Affiliate Date Transaction Security Type Fair Value Book Value APIC, Net of Tax Increase/(Decrease) Realized Investment Gain (Loss) (in thousands) PALAC January 2017 Purchase Fixed Maturities & Short-Term Investments $ 29 $ 29 $ 0 $ 0 Prudential Insurance June 2017 Sale Fixed Maturities & Short-Term Investments $ 16,965 $ 16,515 $ 293 $ 0 Prudential Insurance June 2017 Sale Commercial Mortgages $ 43,198 $ 42,301 $ 584 $ 0 UPARC September 2017 Transfer In Other Invested Assets $ 37,354 $ 37,354 $ 0 $ 0 GUL Re September 2017 Transfer Out Other Invested Assets $ 72,354 $ 72,354 $ 0 $ 0 GUL Re September 2017 Transfer Out Fixed Maturities & Short-Term Investments $ 1,254,457 $ 1,195,697 $ 0 $ 58,760 Prudential Financial September 2017 Transfer In Fixed Maturities & Short-Term Investments $ 415,271 $ 376,412 $ 25,259 $ 0 Prudential Financial September 2017 Transfer Out Fixed Maturities & Short-Term Investments $ 415,271 $ 376,412 $ 25,259 $ 0 UPARC September 2017 Transfer In Fixed Maturities & Short-Term Investments $ 417,067 $ 385,459 $ 0 $ 31,608 UPARC September 2017 Transfer In Trading Account Assets $ 6,225 $ 5,002 $ 0 $ 1,223 GUL Re September 2017 Transfer Out Trading Account Assets $ 6,225 $ 5,002 $ 0 $ 1,223 UPARC September 2017 Purchase Other Invested Assets - Derivatives $ 20,685 $ 20,685 $ 0 $ 0 UPARC November 2017 Purchase Fixed Maturities & Short-Term Investments $ 41,250 $ 34,332 $ 0 $ 6,919 Prudential Insurance December 2017 Sale Commercial Mortgages $ 106,199 $ 105,191 $ 655 $ 0 DART January 2018 Purchase Other Invested Assets $ 21,457 $ 21,457 $ 0 $ 0 PALAC April 2018 Purchase Fixed Maturities $ 64,313 $ 64,313 $ 0 $ 0 GUL Re May 2018 Purchase Fixed Maturities $ 87,486 $ 87,486 $ 0 $ 0 GUL Re May 2018 Purchase Fixed Maturities $ 37,921 $ 37,921 $ 0 $ 0 Debt Agreements The Company is authorized to borrow funds up to $2.2 billion from affiliates to meet its capital and other funding needs. The following table provides the breakout of the Company's short-term debt to affiliates as of September 30, 2018 and December 31, 2017 . Affiliate Date Issued Amount of Notes - September 30, 2018 Amount of Notes - December 31, 2017 Interest Rate Date of Maturity (in thousands) Prudential Funding, LLC 9/28/2018 $ 1,744 $ 0 0.23 % 10/1/2018 Total Loans Payable to Affiliates $ 1,744 $ 0 The total interest expense to the Company related to loans payable to affiliates was $0.2 million and $0.1 million for the three months ended September 30, 2018 and 2017 , respectively and $0.6 million and $0.7 million for the nine months ended September 30, 2018 and 2017 , respectively. Contributed Capital and Dividends In March 2018, the Company received a capital contribution in the amount of $6 million from Prudential Insurance. In March 2017 and July 2017, the Company received capital contributions in the amounts of $5 million and $149 million , respectively, from Prudential Insurance. Through September 30, 2018, the Company did not pay any dividends. In December of 2017, the Company paid a dividend in the amount of $250 million to Prudential Insurance. Reinsurance with Affiliates As discussed in Note 7 , the Company participates in reinsurance transactions with certain affiliates.

Commitments and Contingent Liab

Commitments and Contingent Liabilities	9 Months Ended
	Sep. 30, 2018
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingent Liabilities	COMMITMENTS AND CONTINGENT LIABILITIES Commitments The Company has made commitments to fund commercial loans. As of September 30, 2018 and December 31, 2017 , the outstanding balances on these commitments were $7 million and $15 million , respectively. The Company also made commitments to purchase or fund investments, mostly private fixed maturities. As of September 30, 2018 and December 31, 2017 , $225 million and $196 million , respectively, of these commitments were outstanding. Guarantees In July 2017, the Company formed a joint venture with CT Corp to provide life insurance solutions in Indonesia. The Company owns a 49% interest in the joint venture and has entered into a shareholders agreement with CT Corp that set out their respective rights and obligations with respect to the joint venture. Among other things, the shareholders agreement obligates the Company and CT Corp to provide capital to the joint venture, as necessary to comply with applicable law or to maintain a specified minimum amount of capital in the joint venture. This obligation is not limited to a maximum amount. The Company does not expect to make any payments on this guarantee and is not carrying any liabilities associated with the guarantee. Contingent Liabilities On an ongoing basis, the Company’s internal supervisory and control functions review the quality of sales, marketing and other customer interface procedures and practices and may recommend modifications or enhancements. From time to time, this review process results in the discovery of product administration, servicing or other errors, including errors relating to the timing or amount of payments or contract values due to customers. In certain cases, if appropriate, the Company may offer customers remediation and may incur charges, including the cost of such remediation, administrative costs and regulatory fines. The Company is subject to the laws and regulations of states and other jurisdictions concerning the identification, reporting and escheatment of unclaimed or abandoned funds, and is subject to audit and examination for compliance with these requirements. For additional discussion of these matters, see “Litigation and Regulatory Matters” below. It is possible that the results of operations or the cash flows of the Company in a particular quarterly or annual period could be materially affected as a result of payments in connection with the matters discussed above or other matters depending, in part, upon the results of operations or cash flows for such period. Management believes, however, that ultimate payments in connection with these matters, after consideration of applicable reserves and rights to indemnification, should not have a material adverse effect on the Company’s financial position. Litigation and Regulatory Matters The Company is subject to legal and regulatory actions in the ordinary course of its business. Pending legal and regulatory actions include proceedings specific to the Company and proceedings generally applicable to business practices in the industry in which it operates. The Company is subject to class action lawsuits and other litigation involving a variety of issues and allegations involving sales practices, claims payments and procedures, premium charges, policy servicing and breach of fiduciary duty to customers. The Company is also subject to litigation arising out of its general business activities, such as its investments, contracts, leases and labor and employment relationships, including claims of discrimination and harassment, and could be exposed to claims or litigation concerning certain business or process patents. In addition, the Company, along with other participants in the businesses in which it engages, may be subject from time to time to investigations, examinations and inquiries, in some cases industry-wide, concerning issues or matters upon which such regulators have determined to focus. In some of the Company’s pending legal and regulatory actions, parties are seeking large and/or indeterminate amounts, including punitive or exemplary damages. The outcome of litigation or a regulatory matter, and the amount or range of potential loss at any particular time, is often inherently uncertain. The Company establishes accruals for litigation and regulatory matters when it is probable that a loss has been incurred and the amount of that loss can be reasonably estimated. For litigation and regulatory matters where a loss may be reasonably possible, but not probable, or is probable but not reasonably estimable, no accrual is established, but the matter, if material, is disclosed. The Company estimates that as of September 30, 2018 , the aggregate range of reasonably possible losses in excess of accruals established for those litigation and regulatory matters for which such an estimate currently can be made is less than $100 million . This estimate is not an indication of expected loss, if any, or the Company's maximum possible loss exposure on such matters. The Company reviews relevant information with respect to its litigation and regulatory matters on a quarterly and annual basis and updates its accruals, disclosures and estimates of reasonably possible loss based on such reviews. For a discussion of the Company's litigation and regulatory matters, see Note 11 to the Company’s Consolidated Financial Statements included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2017 . Wells Fargo MyTerm Sales In November 2018, the Company and Wells Fargo resolved the Company’s claims emanating from the MyTerm distribution agreement. Behfarin v. Pruco Life In September 2018, plaintiff filed a motion for class certification. Escheatment Litigation State of West Virginia ex. Rel. John D. Perdue v. Pruco Life In September 2018, the case was dismissed with prejudice. This matter is now closed. Securities Lending and Foreign Tax Reclaim Matter In 2016, Prudential Financial self-reported to the SEC and the U.S. Department of Labor ("DOL"), and notified other regulators, that in some cases it failed to maximize securities lending income for the benefit of certain separate account investments due to a long-standing restriction benefiting Prudential Financial that limited the availability of loanable securities. Prudential Financial has removed the restriction and implemented a remediation plan for the benefit of customers. As part of Prudential Financial’s review of this matter, in 2018 it further self-reported to the SEC, and notified other regulators, that in some cases it failed to timely process foreign tax reclaims for the separate account investments. Prudential Financial has corrected the foreign tax reclaim process and is implementing a remediation plan for the benefit of customers. The DOL’s review of the securities lending matter is closed. Prudential Financial is cooperating with the SEC in its review of the securities lending and foreign tax reclaim matters (which includes a review of the remediation plans) and has entered into discussions with the SEC staff regarding a possible settlement of the securities lending matter that would potentially involve charges under the Investment Advisers Act and financial remedies. Prudential Financial cannot predict the outcome of the discussions with the SEC regarding the foreign tax reclaim matter or the possible settlement of the securities lending matter. Summary The Company’s litigation and regulatory matters are subject to many uncertainties, and given their complexity and scope, their outcome cannot be predicted. It is possible that the Company’s results of operations or cash flows in a particular quarterly or annual period could be materially affected by an ultimate unfavorable resolution of pending litigation and regulatory matters depending, in part, upon the results of operations or cash flows for such period. In light of the unpredictability of the Company’s litigation and regulatory matters, it is also possible that in certain cases an ultimate unfavorable resolution of one or more pending litigation or regulatory matters could have a material adverse effect on the Company’s financial position. Management believes, however, that, based on information currently known to it, the ultimate outcome of all pending litigation and regulatory matters, after consideration of applicable reserves and rights to indemnification, is not likely to have a material adverse effect on the Company’s financial position.

Revision to Prior Year Informat

Revision to Prior Year Information	9 Months Ended
	Sep. 30, 2018
Prior Period Adjustment [Abstract]
Revision to Prior Year Information	REVISION TO PRIOR YEAR INFORMATION Revisions to 2017 Consolidated Financial Statements The Company identified an error in the calculation of reserves for certain individual life products that impacted several line items within previously issued consolidated financial statements. Prior period amounts have been revised in the financial statements and related disclosures to correct this error as shown below. Management evaluated these adjustments and concluded they were not material to any previously reported quarterly or annual financial statements. Management assessed the materiality of the misstatement described above on prior period financial statements in accordance with SEC SAB No. 99, Materiality, codified in ASC 250-10, Accounting Changes and Error Corrections ("ASC 250"), and concluded that these misstatements were not material to any prior annual or interim periods. Accordingly, in accordance with ASC 250 (SAB No. 108, Considering the Effects of Prior Year Misstatements when Quantifying Misstatements in Current Year Financial Statements), the consolidated financial statements as of and for the three and nine months ended September 30, 2017 and also for the year ended December 31, 2017, which are presented herein, have been revised. Similarly, impacted prior periods presented within the Annual Report on Form 10-K for the year ended December 31, 2018 will be revised. The following are selected line items from the consolidated financial statements illustrating the effects of these revisions: Consolidated Statements of Financial Position December 31, 2017 As Previously Reported Revision As Revised (in thousands) ASSETS Reinsurance recoverables $ 32,555,500 $ (34,236 ) $ 32,521,264 TOTAL ASSETS 172,459,576 (34,236 ) 172,425,340 LIABILITIES AND EQUITY LIABILITIES Future policy benefits $ 18,593,130 $ (31,580 ) $ 18,561,550 Income taxes 32,440 3,883 36,323 Other liabilities 1,060,123 (21,151 ) 1,038,972 TOTAL LIABILITIES 169,638,940 (48,848 ) 169,590,092 EQUITY Retained earnings 1,511,698 14,612 1,526,310 TOTAL EQUITY 2,820,636 14,612 2,835,248 TOTAL LIABILITIES AND EQUITY 172,459,576 (34,236 ) 172,425,340 Consolidated Statements of Operations and Comprehensive Income (Loss) Three Months Ended September 30, 2017 Nine Months Ended September 30, 2017 As Previously Reported Revision As Revised As Previously Reported Revision As Revised (in thousands) REVENUES Policy charges and fee income $ 126,709 $ 2,396 $ 129,105 $ 122,186 $ 18,754 $ 140,940 TOTAL REVENUES (24,256 ) 2,396 (21,860 ) 457,424 18,754 476,178 BENEFITS AND EXPENSES Policyholders' benefits 54,637 307 54,944 (77,893 ) 19,658 (58,235 ) TOTAL BENEFITS AND EXPENSES 193,689 307 193,996 315,745 19,658 335,403 INCOME (LOSS) FROM OPERATIONS BEFORE INCOME TAXES AND EQUITY IN EARNINGS OF OPERATING JOINT VENTURE (217,945 ) 2,089 (215,856 ) 141,679 (904 ) 140,775 Income tax expense (benefit) (39,449 ) 789 (38,660 ) (69,061 ) (37 ) (69,098 ) INCOME (LOSS) FROM OPERATIONS BEFORE EQUITY IN EARNINGS OF OPERATING JOINT VENTURE (178,496 ) 1,300 (177,196 ) 210,740 (867 ) 209,873 NET INCOME (LOSS) (178,496 ) 1,300 (177,196 ) 210,740 (867 ) 209,873 COMPREHENSIVE INCOME (LOSS) (184,951 ) 1,300 (183,651 ) 288,438 (867 ) 287,571 Consolidated Statements of Equity Retained Earnings Total Equity As Previously Reported Revision As Revised As Previously Reported Revision As Revised (in thousands) Balance, December 31, 2017 $ 1,511,698 $ 14,612 $ 1,526,310 $ 2,820,636 $ 14,612 $ 2,835,248 Retained Earnings Total Equity As Previously Reported Revision As Revised As Previously Reported Revision As Revised (in thousands) Balance, December 31, 2016 $ 1,437,266 $ 11,251 $ 1,448,517 $ 2,496,803 $ 11,251 $ 2,508,054 Comprehensive income (loss): Net income (loss) 210,740 (867 ) 209,873 210,740 (867 ) 209,873 Total comprehensive income (loss) 288,438 (867 ) 287,571 Balance, September 30, 2017 1,648,006 10,384 1,658,390 2,939,616 10,384 2,950,000 Consolidated Statements of Cash Flows Nine Months Ended September 30, 2017 As Previously Reported Revision As Revised (in thousands) CASH FLOWS FROM (USED IN) OPERATING ACTIVITIES: Net income (loss) $ 210,740 $ (867 ) $ 209,873 Future policy benefits 1,466,123 (10,705 ) 1,455,418 Reinsurance recoverables (1,594,691 ) 30,362 (1,564,329 ) Income taxes 53,508 (36 ) 53,472 Other, net 109,283 (18,754 ) 90,529 Cash flows from (used in) operating activities 85,494 0 85,494

Significant Accounting Polici_2

Significant Accounting Policies and Pronouncements (Policies)	9 Months Ended
	Sep. 30, 2018
Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation The Unaudited Interim Consolidated Financial Statements have been prepared in accordance with accounting principles generally accepted in the United States of America (“U.S. GAAP”) on a basis consistent with reporting interim financial information in accordance with instructions to Form 10-Q and Article 10 of Regulation S-X of the Securities and Exchange Commission (“SEC”). Intercompany balances and transactions have been eliminated. In the opinion of management, all adjustments necessary for a fair statement of the financial position and results of operations have been made. All such adjustments are of a normal, recurring nature. Interim results are not necessarily indicative of the results that may be expected for the full year. These financial statements should be read in conjunction with the Company’s Consolidated Financial Statements included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2017 .
Use of Estimates	Use of Estimates The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities as of the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates. The most significant estimates include those used in determining deferred policy acquisition costs and related amortization; amortization of deferred sales inducements; valuation of investments including derivatives and the recognition of other-than-temporary impairments (“OTTI”); future policy benefits including guarantees; reinsurance recoverables; provision for income taxes and valuation of deferred tax assets; and accruals for contingent liabilities, including estimates for losses in connection with unresolved legal and regulatory matters.
Reclassifications	Reclassifications Certain amounts in prior periods have been reclassified to conform to the current period presentation.
Investment and Investment Related Lines	Fixed maturities, trading is a new financial statement line item comprised of fixed maturities that are carried at fair value. Prior to the adoption of the standard, these fixed maturities were reported in “Trading account assets, at fair value”. Realized and unrealized gains and losses on these investments are reported in “Other income”, and interest and dividend income from these investments is reported in “Net investment income”. Equity securities, at fair value is the new title of the financial statement line item formerly titled “Equity securities, available for sale, at fair value”. As a result of the adoption of the standard, equity securities previously reported in “Trading account assets, at fair value” were reclassified to “Equity securities, at fair value”. The retitled financial statement line is comprised of common stock and mutual fund shares, which are carried at fair value. Realized and unrealized gains and losses on these investments are reported in “Other income,” and dividend income is reported in “Net investment income” on the ex-dividend date. Prior to the adoption of the standard, for the equity investments reported in the financial statement line formerly titled “Equity securities, available for sale, at fair value” the associated net realized gains and losses were included in “Realized investment gains (losses), net” and the associated net unrealized gains and losses were included in “Accumulated other comprehensive income (loss)” (“AOCI”). In addition, with the adoption of the standard, the identification of OTTI for these investments is no longer needed as all of these investments are now measured at fair value with changes in fair value reported in earnings. Other invested assets is the new title of the financial statement line formerly titled “Other long-term investments”. Investments previously reported in “Other long-term investments” were reclassified to “Other invested assets”. The retitled financial statement line consists of the Company’s non-coupon investments in Limited Partnerships and Limited Liability Companies ("LPs/LLCs") (other than operating joint ventures) and derivative assets. LPs/LLCs interests are accounted for using either the equity method of accounting, or at fair value with changes in fair value reported in “Other income”. Prior to the adoption of the standard, the Company applied the cost method of accounting for certain LPs/LLCs interests when its partnership interest was considered minor. The standard effectively eliminated the cost method of accounting for these equity investments. The Company’s income from investments in LPs/LLCs accounted for using the equity method, other than the Company’s investments in operating joint ventures, is included in “Net investment income”. The carrying value of these investments is written down, or impaired, to fair value when a decline in value is considered to be other-than-temporary. In applying the equity method (including assessment for OTTI), the Company uses financial information provided by the investee, generally on a one to three month lag. For the investments reported at fair value with changes in fair value reported in current earnings, the associated realized and unrealized gains and losses are reported in “Other income”.
Other income	Other income includes realized and unrealized gains or losses from investments reported as “Fixed maturities, trading”, “Equity securities, at fair value,” and “Other invested assets” that are measured at fair value.
Adoption of New Accounting Pronouncements	Other ASU adopted during the nine months ended September 30, 2018 . Standard Description Effective date and method of adoption Effect on the financial statements or other significant matters ASU 2014-09 , Revenue from Contracts with Customers (Topic 606) The ASU is based on the core principle that revenue is recognized to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods and services. The standard also requires additional disclosures about the nature, amount, timing and uncertainty of revenue and cash flows arising from customer contracts, and assets recognized from the costs to obtain or fulfill a contract with a customer. Revenue recognition for insurance contracts and financial instruments is explicitly scoped out of the standard. January 1, 2018 using the modified retrospective method which included a cumulative-effect adjustment on the balance sheet as of the beginning of the fiscal year of adoption. Adoption of the ASU did not have an impact on the Company’s Consolidated Financial Statements and Notes to the Consolidated Financial Statements. ASU 2016-15 , Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments (a Consensus of the Emerging Issues Task Force) This ASU addresses diversity in practice in how certain cash receipts and cash payments are presented and classified in the statement of cash flows. The standard provides clarity on the treatment of eight specifically defined types of cash inflows and outflows. January 1, 2018 using the retrospective method (with early adoption permitted provided that all amendments are adopted in the same period). Adoption of the ASU did not have a significant impact on the Company’s Consolidated Financial Statements and Notes to the Consolidated Financial Statements. ASU 2016-18 , Statement of Cash Flows (Topic 230): Restricted Cash In November 2016, the FASB issued this ASU to address diversity in practice from entities classifying and presenting transfers between cash and restricted cash as operating, investing, or financing activities, or as a combination of those activities in the Statement of Cash Flows. The ASU requires entities to show the changes in the total of cash, cash equivalents, restricted cash, and restricted cash equivalents in the Statement of Cash Flows. As a result, transfers between such categories will no longer be presented in the Statement of Cash Flows. January 1, 2018 using the retrospective method (with early adoption permitted). Adoption of the ASU did not have a significant impact on the Company’s Consolidated Financial Statements and Notes to the Consolidated Financial Statements. ASU 2018-02 , Income Statement - Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income In February 2018, this ASU was issued following the enactment of the Tax Act of 2017. This ASU allows an entity to elect a reclassification from accumulated other comprehensive income to retained earnings for stranded effects resulting from the Tax Act of 2017. January 1, 2019 with early adoption permitted. The ASU should be applied either in the period of adoption or retrospectively to each period in which the effect of the change in the U.S. federal corporate income tax rate in the Tax Act of 2017 is recognized. The Company early adopted the ASU effective January 1, 2018 and elected to apply the ASU in the period of adoption subsequent to recording the adoption impacts of ASU 2016-01 as described above. As a result, the Company reclassified stranded effects resulting from the Tax Act of 2017 by increasing accumulated other comprehensive income and decreasing retained earnings, each by $30.4 million. Stranded effects unrelated to the Tax Act of 2017 are generally released from accumulated other comprehensive income when an entire portfolio of the type of item related to the stranded effect is liquidated, sold or extinguished (i.e., portfolio approach). Recent Accounting Pronouncements Changes to U.S. GAAP are established by the Financial Accounting Standards Board ("FASB") in the form of Accounting Standards Updates ("ASU") to the FASB Accounting Standards Codification. The Company considers the applicability and impact of all ASU. ASU listed below include those that have been adopted during the current fiscal year and/or those that have been issued but not yet adopted as of the date of this filing. ASU not listed below were assessed and determined to be either not applicable or not material. Adoption of ASU 2016-01 Effective January 1, 2018, the Company adopted ASU 2016-01, Financial Instruments - Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Liabilities using a modified retrospective method. Adoption of this ASU impacted the Company’s accounting and presentation related to equity investments. The most significant impact is that the changes in fair value of equity securities previously classified as “available for sale” are to be reported in net income within “Other income” in the Consolidated Statements of Operations. Prior to this, the changes in fair value on equity securities classified as “available for sale” were reported in “Accumulated other comprehensive income”. The impacts of this ASU on the Company’s Consolidated Financial Statements can be categorized as follows: (1) Changes to the presentation within the Consolidated Statements of Financial Position; (2) Cumulative-effect Adjustment Upon Adoption; and (3) Changes to Accounting Policies. Each of these components is described below. This section is meant to serve as an update to, and should be read in conjunction with, Note 2 to the Consolidated Financial Statements included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2017. (1) Changes to the presentation within the Consolidated Statements of Financial Position Because of the fundamental accounting changes as described in section "(3) Changes to Accounting Policies" below, the Company determined that changes to the presentation of certain balances in the investment section of the Company’s Consolidated Statements of Financial Position were also necessary to maintain clarity and logical presentation. The table below illustrates these changes by presenting the balances as previously reported in the Company’s Annual Report on Form 10-K for the year ended December 31, 2017 and the reclassifications that were made, along with a footnote explanation of each reclassification. December 31, 2017 As previously reported Reclassifications As currently reported Consolidated Statements of Financial Position Line Items (1) (2) (3) (in thousands) Fixed maturities, available-for-sale, at fair value $ 5,223,302 $ 5,223,302 *Fixed maturities, trading, at fair value 0 38,793 38,793 Equity securities, available-for-sale, at fair value 23,122 (23,122 ) 0 *Equity securities, at fair value 0 23,122 17,488 40,610 Trading account assets, at fair value 56,281 (56,281 ) 0 Policy loans 1,161,101 1,161,101 Short-term investments 1,339 1,339 Commercial mortgage and other loans 1,083,419 1,083,419 Other long-term investments 263,074 (263,074 ) 0 *Other invested assets 0 263,074 263,074 Total investments $ 7,811,638 $ 0 $ 0 $ 0 $ 7,811,638 * - New line item effective January 1, 2018. Strikethrough - Eliminated line item effective January 1, 2018. (1) Retitled “Equity securities, available-for-sale, at fair value” to “Equity securities, at fair value” as equity securities can no longer be described as available-for-sale. (2) Eliminated the line item “Trading account assets, at fair value” and reclassified each component to another line item. (3) Retitled “Other long-term investments” to “Other invested assets”. (2) Cumulative-effect Adjustment Upon Adoption The provisions of ASU 2016-01 require that the Company apply the amendments through a cumulative-effect adjustment to the Consolidated Statements of Financial Position as of the beginning of the fiscal year of adoption. The following table illustrates the impact on the Company’s Consolidated Statement of Financial Position as a result of recording this cumulative-effect adjustment on January 1, 2018. Summary of ASU 2016-01 Transition Impacts on the Consolidated Statement of Financial Position upon Adoption on January 1, 2018 (in thousands) Increase / (Decrease) Other invested assets $ 8,097 Total assets $ 8,097 Income taxes $ 1,700 Total liabilities 1,700 Accumulated other comprehensive income (loss) (1,539 ) Retained earnings 7,936 Total equity 6,397 Total liabilities and equity $ 8,097 (3) Changes to Accounting Policies This section summarizes the changes in our accounting policies resulting from the adoption of ASU 2016-01 as well as an update to the components of the financial statement line items impacted by the Company’s Consolidated Statements of Financial Position presentation changes described above.
Future Adoption Of New Accounting Pronouncements	ASU issued but not yet adopted as of September 30, 2018 — ASU 2018-12 ASU 2018-12, Financial Services - Insurance (Topic 944): Targeted Improvements to the Accounting for Long-Duration Contracts, was issued by the FASB on August 15, 2018 and is expected to have a significant impact on the Company’s Consolidated Financial Statements and Notes to the Consolidated Financial Statements. The ASU is effective January 1, 2021 (with early adoption permitted), and will impact, at least to some extent, the accounting and disclosure requirements for all long-duration insurance and investment contracts issued by the Company. Outlined below are four key areas of change, although there are other less significant changes not noted below. In addition to the impacts to the balance sheet upon adoption, the Company also expects an impact to how earnings emerge thereafter. ASU 2018-12 Amended Topic Description Method of adoption Effect on the financial statements or other significant matters Cash flow assumptions used to measure the liability for future policy benefits for non-participating traditional and limited-pay insurance products Requires an entity to review, and if necessary, update the cash flow assumptions used to measure the liability for future policy benefits, for both changes in future assumptions and actual experience, at least annually using a retrospective update method with a cumulative catch-up adjustment recorded in a separate line item in the Consolidated Statements of Operations. An entity may choose one of two adoption methods for the liability for future policy benefits: (1) a modified retrospective transition method whereby the entity will apply the amendments to contracts in force as of the beginning of the earliest period presented on the basis of their existing carrying amounts, adjusted for the removal of any related amounts in AOCI or (2) a full retrospective transition method. The options for method of adoption and the impacts of such methods are under assessment. Discount rate assumption used to measure the liability for future policy benefits for non-participating traditional and limited-pay insurance products Requires discount rate assumptions to be based on an upper-medium grade fixed income instrument yield and will be required to be updated each quarter with the impact recorded through Other Comprehensive Income ("OCI"). As noted above, an entity may choose either a modified retrospective transition method or full retrospective transition method for the liability for future policy benefits. Under either method, for balance sheet remeasurement purposes, the liability for future policy benefits will be remeasured using current discount rates as of the beginning of the earliest period presented with the impact recorded as a cumulative effect adjustment to AOCI. Upon adoption, under either transition method, there will be an adjustment to AOCI as a result of remeasuring in force contract liabilities using current upper-medium grade fixed income instrument yields. The adjustment upon adoption will largely reflect the difference between the discount rate locked-in at contract inception versus current discount rates at transition. The magnitude of such adjustment is currently being assessed. Amortization of deferred acquisition costs ("DAC") and other balances Requires DAC and other balances, such as unearned revenue reserves and deferred sales inducements, to be amortized on a constant level basis over the expected term of the related contract, independent of expected profitability. An entity may apply one of two adoption methods: (1) a modified retrospective transition method whereby the entity will apply the amendments to contracts in force as of the beginning of the earliest period presented on the basis of their existing carrying amounts, adjusted for the removal of any related amounts in AOCI or (2) if an entity chooses a full retrospective transition method for its future policy benefits, as described above, it is required to also use a retrospective transition method for DAC and other balances. The options for method of adoption and the impacts of such methods are under assessment. Under the modified retrospective transition method, the Company would not expect a significant impact to the balance sheet, other than the impact of the removal of any related amounts in AOCI. Market Risk Benefits Requires an entity to measure all market risk benefits (e.g., living benefit and death benefit guarantees associated with variable annuities) at fair value with changes in value attributable to changes in an entity’s non-performance risk ("NPR") to be recognized in OCI. An entity will apply a retrospective transition method which will include a cumulative-effect adjustment on the balance sheet as of the earliest period presented. Upon adoption, the Company expects an impact to retained earnings for the difference between the fair value and carrying value of benefits not currently measured at fair value (e.g., guaranteed minimum death benefits on variable annuities) and an impact from reclassifying the cumulative effect of changes in NPR from retained earnings to AOCI. The magnitude of such adjustments is currently being assessed. Other ASU issued but not yet adopted as of September 30, 2018 Standard Description Effective date and method of adoption Effect on the financial statements or other significant matters ASU 2016-13 , This ASU provides a new current expected credit loss model to account for credit losses on certain financial assets and off-balance sheet exposures (e.g., loans held for investment, debt securities held to maturity, reinsurance receivables, net investments in leases and loan commitments). The model requires an entity to estimate lifetime credit losses related to such financial assets and exposures based on relevant information about past events, current conditions, and reasonable and supportable forecasts that affect the collectability of the reported amount. The standard also modifies the current other-than-temporary impairment standard for available-for-sale debt securities to require the use of an allowance rather than a direct write down of the investment, and replaces existing standard for purchased credit deteriorated loans and debt securities. January 1, 2020 using the modified retrospective method which will include a cumulative-effect adjustment on the balance sheet as of the beginning of the fiscal year of adoption. However, prospective application is required for purchased credit deteriorated assets previously accounted for under ASU 310-30 and for debt securities for which an other-than-temporary-impairment was recognized prior to the date of adoption. Early adoption is permitted beginning January 1, 2019. The Company is currently assessing the impact of the ASU on the Company’s Consolidated Financial Statements and Notes to the Consolidated Financial Statements. ASU 2017-08, Receivables - Nonrefundable Fees and Other Costs (Subtopic 310-20) Premium Amortization on Purchased Callable Debt Securities This ASU requires certain premiums on callable debt securities to be amortized to the earliest call date. January 1, 2019 using the modified retrospective method (with early adoption permitted) which will include a cumulative-effect adjustment on the balance sheet as of the beginning of the fiscal year of adoption. The Company does not expect the adoption of the ASU to have a significant impact on the Company’s Consolidated Financial Statements and Notes to the Consolidated Financial Statements. ASU 2017-12, Derivatives and Hedging (Topic 815): Targeted Improvements to Accounting for Hedging Activities This ASU makes targeted changes to the existing hedge accounting model to better portray the economics of an entity’s risk management activities and to simplify the use of hedge accounting. January 1, 2019 using the modified retrospective method (with early adoption permitted) which will include a cumulative-effect adjustment on the balance sheet as of the beginning of the fiscal year of adoption. The Company does not expect the adoption of the ASU to have a significant impact on the Company’s Consolidated Financial Statements and Notes to the Consolidated Financial Statements.

Significant Accounting Polici_3

Significant Accounting Policies and Pronouncements (Tables)	9 Months Ended
	Sep. 30, 2018
Accounting Policies [Abstract]
Adoption of ASU 2016-01	The following table illustrates the impact on the Company’s Consolidated Statement of Financial Position as a result of recording this cumulative-effect adjustment on January 1, 2018. Summary of ASU 2016-01 Transition Impacts on the Consolidated Statement of Financial Position upon Adoption on January 1, 2018 (in thousands) Increase / (Decrease) Other invested assets $ 8,097 Total assets $ 8,097 Income taxes $ 1,700 Total liabilities 1,700 Accumulated other comprehensive income (loss) (1,539 ) Retained earnings 7,936 Total equity 6,397 Total liabilities and equity $ 8,097 The table below illustrates these changes by presenting the balances as previously reported in the Company’s Annual Report on Form 10-K for the year ended December 31, 2017 and the reclassifications that were made, along with a footnote explanation of each reclassification. December 31, 2017 As previously reported Reclassifications As currently reported Consolidated Statements of Financial Position Line Items (1) (2) (3) (in thousands) Fixed maturities, available-for-sale, at fair value $ 5,223,302 $ 5,223,302 *Fixed maturities, trading, at fair value 0 38,793 38,793 Equity securities, available-for-sale, at fair value 23,122 (23,122 ) 0 *Equity securities, at fair value 0 23,122 17,488 40,610 Trading account assets, at fair value 56,281 (56,281 ) 0 Policy loans 1,161,101 1,161,101 Short-term investments 1,339 1,339 Commercial mortgage and other loans 1,083,419 1,083,419 Other long-term investments 263,074 (263,074 ) 0 *Other invested assets 0 263,074 263,074 Total investments $ 7,811,638 $ 0 $ 0 $ 0 $ 7,811,638 * - New line item effective January 1, 2018. Strikethrough - Eliminated line item effective January 1, 2018. (1) Retitled “Equity securities, available-for-sale, at fair value” to “Equity securities, at fair value” as equity securities can no longer be described as available-for-sale. (2) Eliminated the line item “Trading account assets, at fair value” and reclassified each component to another line item. (3) Retitled “Other long-term investments” to “Other invested assets”.

Investments (Tables)

Investments (Tables)	9 Months Ended
	Sep. 30, 2018
Investments [Abstract]
Fixed Maturities Securities, Available-for-sale Securities	The following tables set forth information relating to fixed maturity securities (excluding investments classified as trading), as of the dates indicated: September 30, 2018 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value OTTI in AOCI(3) (in thousands) Fixed maturities, available-for-sale: U.S. Treasury securities and obligations of U.S. government authorities and agencies $ 70,647 $ 2,008 $ 19 $ 72,636 $ 0 Obligations of U.S. states and their political subdivisions 610,471 12,030 3,893 618,608 0 Foreign government bonds 206,359 2,837 6,178 203,018 0 Public utilities 711,477 23,424 15,574 719,327 0 Redeemable preferred stock 4,118 665 20 4,763 0 All other U.S. public corporate securities 1,381,716 39,769 35,222 1,386,263 0 All other U.S. private corporate securities 675,995 4,597 14,848 665,744 0 All other foreign public corporate securities 258,377 4,486 8,094 254,769 0 All other foreign private corporate securities 777,245 13,807 26,521 764,531 0 Asset-backed securities(1) 162,353 1,885 223 164,015 (124 ) Commercial mortgage-backed securities 295,265 1,093 6,700 289,658 0 Residential mortgage-backed securities(2) 91,984 1,374 1,982 91,376 (188 ) Total fixed maturities, available-for-sale $ 5,246,007 $ 107,975 $ 119,274 $ 5,234,708 $ (312 ) (1) Includes credit-tranched securities collateralized by loan obligations, sub-prime mortgages, auto loans, education loans and other asset types. (2) Includes publicly-traded agency pass-through securities and collateralized mortgage obligations. (3) Represents the amount of unrealized losses remaining in AOCI, from the impairment measurement date. Amount excludes $0.0 million of net unrealized gains on impaired available-for-sale securities relating to changes in the value of such securities subsequent to the impairment measurement date. December 31, 2017 Amortized Gross Unrealized Gains Gross Unrealized Losses Fair Value OTTI in AOCI(3) (in thousands) Fixed maturities, available-for-sale: U.S. Treasury securities and obligations of U.S. government authorities and agencies $ 95,851 $ 3,964 $ 0 $ 99,815 $ 0 Obligations of U.S. states and their political subdivisions 597,254 38,204 0 635,458 0 Foreign government bonds 128,058 7,536 496 135,098 0 Public utilities 677,702 61,588 1,058 738,232 0 Redeemable preferred stock 4,053 957 0 5,010 0 All other U.S. public corporate securities 1,254,140 105,524 2,580 1,357,084 (215 ) All other U.S. private corporate securities 710,424 18,306 1,644 727,086 0 All other foreign public corporate securities 168,399 12,522 732 180,189 0 All other foreign private corporate securities 737,037 41,405 9,598 768,844 0 Asset-backed securities(1) 179,935 2,519 26 182,428 (138 ) Commercial mortgage-backed securities 320,223 5,148 2,539 322,832 0 Residential mortgage-backed securities(2) 68,868 2,527 169 71,226 (220 ) Total fixed maturities, available-for-sale $ 4,941,944 $ 300,200 $ 18,842 $ 5,223,302 $ (573 ) (1) Includes credit-tranched securities collateralized by loan obligations, sub-prime mortgages, auto loans, education loans and other asset types. (2) Includes publicly-traded agency pass-through securities and collateralized mortgage obligations. (3) Represents the amount of unrealized losses remaining in AOCI, from the impairment measurement date. Amount excludes $2.2 million of net unrealized gains on impaired available-for-sale securities relating to changes in the value of such securities subsequent to the impairment measurement date.
Duration Of Gross Unrealized Losses On Fixed Maturity Securities Disclosures	The following tables set forth the fair value and gross unrealized losses aggregated by investment category and length of time that individual fixed maturity securities had been in a continuous unrealized loss position, as of the dates indicated: September 30, 2018 Less Than Twelve Months Twelve Months or More Total Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses (in thousands) Fixed maturities, available-for-sale: U.S. Treasury securities and obligations of U.S. government authorities and agencies $ 617 $ 19 $ 0 $ 0 $ 617 $ 19 Obligations of U.S. states and their political subdivisions 219,185 3,893 0 0 219,185 3,893 Foreign government bonds 118,010 4,515 20,274 1,663 138,284 6,178 Public utilities 334,468 12,808 29,857 2,766 364,325 15,574 Redeemable preferred stock 1,789 20 0 0 1,789 20 All other U.S. public corporate securities 618,747 26,700 106,631 8,522 725,378 35,222 All other U.S. private corporate securities 383,595 10,490 81,864 4,358 465,459 14,848 All other foreign public corporate securities 169,812 6,447 15,813 1,647 185,625 8,094 All other foreign private corporate securities 378,179 14,147 75,531 12,374 453,710 26,521 Asset-backed securities 38,396 136 4,052 87 42,448 223 Commercial mortgage-backed securities 152,005 3,570 44,529 3,130 196,534 6,700 Residential mortgage-backed securities 56,256 1,309 12,212 673 68,468 1,982 Total fixed maturities, available-for-sale $ 2,471,059 $ 84,054 $ 390,763 $ 35,220 $ 2,861,822 $ 119,274 December 31, 2017 Less Than Twelve Months Twelve Months or More Total Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses (in thousands) Fixed maturities, available-for-sale: U.S. Treasury securities and obligations of U.S. government authorities and agencies $ 0 $ 0 $ 0 $ 0 $ 0 $ 0 Obligations of U.S. states and their political subdivisions 0 0 0 0 0 0 Foreign government bonds 16,522 210 11,959 286 28,481 496 Public utilities 26,466 380 27,354 678 53,820 1,058 Redeemable preferred stock 0 0 0 0 0 0 All other U.S. public corporate securities 36,100 304 102,490 2,276 138,590 2,580 All other U.S. private corporate securities 79,495 781 36,642 863 116,137 1,644 All other foreign public corporate securities 27,078 190 8,390 542 35,468 732 All other foreign private corporate securities 48,109 472 133,055 9,126 181,164 9,598 Asset-backed securities 6,351 22 317 4 6,668 26 Commercial mortgage-backed securities 49,823 285 93,403 2,254 143,226 2,539 Residential mortgage-backed securities 8,030 28 6,160 141 14,190 169 Total fixed maturities, available-for-sale $ 297,974 $ 2,672 $ 419,770 $ 16,170 $ 717,744 $ 18,842
Investments Classified by Contractual Maturity Date	The following table sets forth the amortized cost and fair value of fixed maturities by contractual maturities, as of the date indicated: September 30, 2018 Amortized Cost Fair Value (in thousands) Fixed maturities, available-for-sale: Due in one year or less $ 107,422 $ 108,362 Due after one year through five years 714,425 706,440 Due after five years through ten years 1,034,940 1,026,399 Due after ten years 2,839,618 2,848,458 Asset-backed securities 162,353 164,015 Commercial mortgage-backed securities 295,265 289,658 Residential mortgage-backed securities 91,984 91,376 Total fixed maturities, available-for-sale $ 5,246,007 $ 5,234,708
Sources of Fixed Maturity Proceeds and Related Investment Gains (Losses) as well as Losses on Impairments	The following table sets forth the sources of fixed maturity proceeds and related investment gains (losses), as well as losses on impairments of fixed maturities, for the periods indicated: Three Months Ended September 30, Nine Months Ended September 30, 2018 2017 2018 2017 (in thousands) Fixed maturities, available-for-sale: Proceeds from sales(1) $ 4,478 $ 56,312 $ 138,565 $ 483,151 Proceeds from maturities/prepayments 90,432 125,128 230,550 392,320 Gross investment gains from sales and maturities 394 34,996 508 44,016 Gross investment losses from sales and maturities (216 ) (6,259 ) (3,806 ) (9,554 ) OTTI recognized in earnings(2) (1,226 ) (143 ) (1,877 ) (5,668 ) (1) Includes $0.2 million and $(0.1) million of non-cash related proceeds due to the timing of trade settlements for the nine months ended September 30, 2018 and 2017 , respectively. (2) Excludes the portion of OTTI amounts remaining in OCI, representing any difference between the fair value of the impaired debt security and the net present value of its projected future cash flows at the time of the impairment.
Credit Losses Recognized in Earnings on Fixed Maturity Securities Held by the Company for which a Portion of the OTTI Loss was Recognized in OCI	The following table sets forth a rollforward of pre-tax amounts remaining in OCI related to fixed maturity securities with credit loss impairments recognized in earnings, for the periods indicated: Three Months Ended September 30, 2018 Nine Months Ended September 30, 2018 Three Months Ended September 30, 2017 Nine Months Ended September 30, 2017 (in thousands) Credit loss impairments: Balance, beginning of period $ 1,982 $ 4,374 $ 3,724 $ 5,520 New credit loss impairments 0 0 0 424 Additional credit loss impairments on securities previously impaired 0 0 0 0 Increases due to the passage of time on previously recorded credit losses 463 510 25 88 Reductions for securities which matured, paid down, prepaid or were sold during the period (15 ) (1,975 ) (24 ) (1,894 ) Reductions for securities impaired to fair value during the period(1) 0 0 0 (327 ) Accretion of credit loss impairments previously recognized due to an increase in cash flows expected to be collected (6 ) (485 ) (11 ) (97 ) Assets transferred to parent and affiliates 0 0 0 0 Balance, end of period $ 2,424 $ 2,424 $ 3,714 $ 3,714 (1) Represents circumstances where the Company determined in the current period that it intends to sell the security or it is more likely than not that it will be required to sell the security before recovery of the security’s amortized cost.
Commercial Mortgage and Other Loans	The following table sets forth the composition of “Commercial mortgage and other loans,” as of the dates indicated: September 30, 2018 December 31, 2017 Amount (in thousands) % of Total Amount (in thousands) % of Total Commercial mortgage and agricultural property loans by property type: Apartments/Multi-Family $ 363,801 30.8 % $ 356,694 32.9 % Hospitality 16,196 1.4 16,529 1.5 Industrial 254,148 21.5 180,619 16.7 Office 172,576 14.6 159,646 14.7 Other 125,652 10.7 99,119 9.1 Retail 190,568 16.2 205,367 18.9 Total commercial mortgage loans 1,122,941 95.2 1,017,974 93.8 Agricultural property loans 56,226 4.8 67,239 6.2 Total commercial mortgage and agricultural property loans by property type 1,179,167 100.0 % 1,085,213 100.0 % Valuation allowance (1,772 ) (1,794 ) Total commercial mortgage and other loans $ 1,177,395 $ 1,083,419
Allowance for Losses	The following tables set forth the activity in the allowance for credit losses for commercial mortgage and other loans, as of the dates indicated: September 30, 2018 Commercial Mortgage Loans Agricultural Property Loans Total (in thousands) Allowance for credit losses: Balance, beginning of year $ 1,728 $ 66 $ 1,794 Addition to (release of) allowance for losses 4 (26 ) (22 ) Charge-offs, net of recoveries 0 0 0 Total ending balance $ 1,732 $ 40 $ 1,772 December 31, 2017 Commercial Mortgage Loans Agricultural Property Loans Total (in thousands) Allowance for credit losses: Balance, beginning of year $ 1,513 $ 45 $ 1,558 Addition to (release of) allowance for losses 215 21 236 Charge-offs, net of recoveries 0 0 0 Total ending balance $ 1,728 $ 66 $ 1,794
Allowance for Credit Losses and Recorded Investment in Commercial Mortgage and Other Loans	The following tables set forth the allowance for credit losses and the recorded investment in commercial mortgage and other loans, as of the dates indicated: September 30, 2018 Commercial Mortgage Loans Agricultural Property Loans Total (in thousands) Allowance for credit losses: Individually evaluated for impairment $ 0 $ 0 $ 0 Collectively evaluated for impairment 1,732 40 1,772 Total ending balance(1) $ 1,732 $ 40 $ 1,772 Recorded investment(2): Individually evaluated for impairment $ 0 $ 815 $ 815 Collectively evaluated for impairment 1,122,941 55,411 1,178,352 Total ending balance(1) $ 1,122,941 $ 56,226 $ 1,179,167 (1) As of September 30, 2018 , there were no loans acquired with deteriorated credit quality. (2) Recorded investment reflects the carrying value gross of related allowance. December 31, 2017 Commercial Mortgage Loans Agricultural Property Loans Total (in thousands) Allowance for credit losses: Individually evaluated for impairment $ 0 $ 0 $ 0 Collectively evaluated for impairment 1,728 66 1,794 Total ending balance(1) $ 1,728 $ 66 $ 1,794 Recorded investment(2): Individually evaluated for impairment $ 2,316 $ 1,153 $ 3,469 Collectively evaluated for impairment 1,015,658 66,086 1,081,744 Total ending balance(1) $ 1,017,974 $ 67,239 $ 1,085,213 (1) As of December 31, 2017 , there were no loans acquired with deteriorated credit quality. (2) Recorded investment reflects the carrying value gross of related allowance.
Financing Receivable Credit Quality Indicators	The following tables set forth certain key credit quality indicators for commercial mortgage and agricultural property loans based upon the recorded investment gross of allowance for credit losses, as of the dates indicated: September 30, 2018 Debt Service Coverage Ratio ≥ 1.2X 1.0X to < 1.2X < 1.0X Total Loans (in thousands) Loan-to-Value Ratio: 0%-59.99% $ 665,897 $ 13,001 $ 0 $ 678,898 60%-69.99% 320,308 20,449 0 340,757 70%-79.99% 99,433 32,849 0 132,282 80% or greater 27,000 230 0 27,230 Total loans $ 1,112,638 $ 66,529 $ 0 $ 1,179,167 December 31, 2017 Debt Service Coverage Ratio ≥ 1.2X 1.0X to < 1.2X < 1.0X Total Loans (in thousands) Loan-to-Value Ratio: 0%-59.99% $ 606,846 $ 21,709 $ 705 $ 629,260 60%-69.99% 333,185 9,594 2,010 344,789 70%-79.99% 84,492 26,439 0 110,931 80% or greater 0 0 233 233 Total loans $ 1,024,523 $ 57,742 $ 2,948 $ 1,085,213
Aging of Past Due Commercial Mortgage and Other Loans and Nonaccrual Status	The following tables set forth an aging of past due commercial mortgage and other loans, based upon the recorded investment gross of allowance for credit losses, as well as the amount of commercial mortgage and other loans on non-accrual status, as of the dates indicated: September 30, 2018 Current 30-59 Days Past Due 60-89 Days Past Due 90 Days or More Past Due(1) Total Loans Non-Accrual Status(2) (in thousands) Commercial mortgage loans $ 1,122,941 $ 0 $ 0 $ 0 $ 1,122,941 $ 0 Agricultural property loans 56,226 0 0 0 56,226 0 Total $ 1,179,167 $ 0 $ 0 $ 0 $ 1,179,167 $ 0 (1) As of September 30, 2018 , there were no loans in this category accruing interest. (2) For additional information regarding the Company’s policies for accruing interest on loans, see Note 2 to the Consolidated Financial Statements included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2017 . December 31, 2017 Current 30-59 Days Past Due 60-89 Days Past Due 90 Days or More Past Due(1) Total Loans Non-Accrual Status(2) (in thousands) Commercial mortgage loans $ 1,017,974 $ 0 $ 0 $ 0 $ 1,017,974 $ 0 Agricultural property loans 67,239 0 0 0 67,239 0 Total $ 1,085,213 $ 0 $ 0 $ 0 $ 1,085,213 $ 0 (1) As of December 31, 2017 , there were no loans in this category accruing interest. (2) For additional information regarding the Company’s policies for accruing interest on loans, see Note 2 to the Consolidated Financial Statements included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2017 .
Other Invested Assets	The following table sets forth the composition of “Other invested assets,” as of the dates indicated: September 30, 2018 December 31, 2017 (in thousands) Company’s investment in separate accounts $ 42,317 $ 37,404 LPs/LLCs: Equity method: Private equity 147,660 123,957 Hedge funds 58,329 53,066 Real estate-related 8,909 7,040 Subtotal equity method 214,898 184,063 Fair value: Private equity 59,230 35,686 Hedge funds 774 726 Real estate-related 8,044 5,186 Subtotal fair value(1) 68,048 41,598 Total LPs/LLCs 282,946 225,661 Derivative instruments 8,119 9 Total other invested assets(2) $ 333,382 $ 263,074 (1) As of December 31, 2017 , $40.9 million was accounted for under the cost method. (2) Prior period amounts have been reclassified to conform to current period presentation. For additional information, see Note 2 .
Net Investment Income	The following table sets forth “Net investment income” by investment type, for the periods indicated: Three Months Ended September 30, Nine Months Ended September 30, 2018 2017 2018 2017 (in thousands) Fixed maturities, available-for-sale $ 55,109 $ 59,264 $ 163,564 $ 177,512 Fixed maturities, trading 271 126 809 486 Equity securities, at fair value 222 316 664 758 Commercial mortgage and other loans 12,462 13,534 37,170 39,800 Policy loans 16,628 16,110 48,861 47,572 Short-term investments and cash equivalents 952 282 1,389 674 Other invested assets 5,169 1,865 7,027 15,514 Gross investment income 90,813 91,497 259,484 282,316 Less: investment expenses (4,627 ) (4,975 ) (13,734 ) (15,138 ) Net investment income(1) $ 86,186 $ 86,522 $ 245,750 $ 267,178 (1) Prior period amounts have been reclassified to conform to current period presentation.
Realized Investment Gains (Losses), Net	The following table sets forth “Realized investment gains (losses), net,” by investment type, for the periods indicated: Three Months Ended September 30, Nine Months Ended September 30, 2018 2017 2018 2017 (in thousands) Fixed maturities(1) $ (1,048 ) $ 28,594 $ (5,175 ) $ 28,794 Equity securities(2) 0 0 0 (125 ) Commercial mortgage and other loans 16 74 22 (414 ) LPs/LLCs 0 5 849 (96 ) Derivatives(3) (48,393 ) (303,850 ) (131,034 ) (59,319 ) Short-term investments and cash equivalents 2 (9 ) (17 ) (15 ) Realized investment gains (losses), net $ (49,423 ) $ (275,186 ) $ (135,355 ) $ (31,175 ) (1) Includes fixed maturity securities classified as available-for-sale and excludes fixed maturity securities classified as trading. (2) Effective January 1, 2018, realized gains (losses) on equity securities are recorded within “Other income.” (3) Includes the hedged items offset in qualifying fair value hedge accounting relationships.
Unrealized Gains and (Losses) on Investments	The following table sets forth net unrealized gains (losses) on investments, as of the dates indicated: September 30, 2018 December 31, 2017 (in thousands) Fixed maturity securities, available-for-sale—with OTTI $ (308 ) $ 1,609 Fixed maturity securities, available-for-sale—all other (10,991 ) 279,749 Equity securities, available-for-sale(1) 0 2,368 Derivatives designated as cash flow hedges(2) (7,567 ) (17,678 ) Affiliated notes 408 4,782 Other investments 5,043 3,588 Net unrealized gains (losses) on investments $ (13,415 ) $ 274,418 (1) Effective January 1, 2018, unrealized gains (losses) on equity securities are recorded within “Other income.” (2) For more information on cash flow hedges, see Note 4 .
Schedule of Securities Financing Transactions	The following table sets forth the composition of “Cash collateral for loaned securities,” which represents the liability to return cash collateral received for the following types of securities loaned, as of the dates indicated: September 30, 2018 December 31, 2017 Remaining Contractual Maturities of the Agreements Remaining Contractual Maturities of the Agreements Overnight & Continuous Up to 30 Days Total Overnight & Continuous Up to 30 Days Total (in thousands) U.S. Treasury securities and obligations of U.S. government authorities and agencies $ 5,131 $ 0 $ 5,131 $ 0 $ 22,460 $ 22,460 Foreign government bonds 0 0 0 6,157 0 6,157 U.S. public corporate securities 2,454 0 2,454 4,074 0 4,074 Foreign public corporate securities 0 0 0 478 0 478 Total cash collateral for loaned securities(1) $ 7,585 $ 0 $ 7,585 $ 10,709 $ 22,460 $ 33,169 (1) The Company did not have any agreements with remaining contractual maturities of thirty days or greater, as of the dates indicated.

Derivative Instruments (Tables)

Derivative Instruments (Tables)	9 Months Ended
	Sep. 30, 2018
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value	The table below provides a summary of the gross notional amount and fair value of derivative contracts by the primary underlying risks, excluding embedded derivatives and associated reinsurance recoverables. Many derivative instruments contain multiple underlying risks. The fair value amounts below represent the gross fair value of derivative contracts prior to taking into account the netting effects of master netting agreements, cash collateral, and NPR. September 30, 2018 December 31, 2017 Primary Underlying Risk/Instrument Type Gross Fair Value Gross Fair Value Notional Assets Liabilities Notional Assets Liabilities (in thousands) Derivatives Designated as Hedge Accounting Instruments: Currency/Interest Rate Foreign Currency Swaps $ 713,959 $ 23,729 $ (34,753 ) $ 649,905 $ 18,243 $ (44,806 ) Total Qualifying Hedges $ 713,959 $ 23,729 $ (34,753 ) $ 649,905 $ 18,243 $ (44,806 ) Derivatives Not Qualifying as Hedge Accounting Instruments: Interest Rate Interest Rate Swaps $ 246,925 $ 11,301 $ (6,463 ) $ 246,925 $ 23,032 $ 0 Foreign Currency Foreign Currency Forwards 21,456 189 (13 ) 16,320 0 (376 ) Credit Credit Default Swaps 756 0 (18 ) 1,594 0 (96 ) Currency/Interest Rate Foreign Currency Swaps 87,548 4,288 (4,836 ) 95,145 4,347 (5,600 ) Equity Equity Options 1,758,194 80,710 (22,272 ) 1,277,102 69,472 (23,500 ) Total Non-Qualifying Hedges $ 2,114,879 $ 96,488 $ (33,602 ) $ 1,637,086 $ 96,851 $ (29,572 ) Total Derivatives (1) $ 2,828,838 $ 120,217 $ (68,355 ) $ 2,286,991 $ 115,094 $ (74,378 ) (1) Excludes embedded derivatives and associated reinsurance recoverables which contain multiple underlying risks.
Offsetting Of Financial Assets	The following table presents recognized derivative instruments (excluding embedded derivatives and associated reinsurance recoverables), and repurchase and reverse repurchase agreements that are offset in the Unaudited Interim Consolidated Statements of Financial Position, and/or are subject to an enforceable master netting arrangement or similar agreement, irrespective of whether they are offset in the Unaudited Interim Consolidated Statements of Financial Position. September 30, 2018 Gross Amounts of Recognized Financial Instruments Gross Amounts Offset in the Consolidated Statements of Financial Position Net Amounts Financial Instruments/ Collateral (1) Net Amount (in thousands) Offsetting of Financial Assets: Derivatives (1) $ 120,214 $ (112,098 ) $ 8,116 $ (5,961 ) $ 2,155 Securities purchased under agreements to resell 205,000 0 205,000 (205,000 ) 0 Total Assets $ 325,214 $ (112,098 ) $ 213,116 $ (210,961 ) $ 2,155 Offsetting of Financial Liabilities: Derivatives (1) $ 68,355 $ (68,355 ) $ 0 $ 0 $ 0 Securities sold under agreements to repurchase 0 0 0 0 0 Total Liabilities $ 68,355 $ (68,355 ) $ 0 $ 0 $ 0 December 31, 2017 Gross Amounts of Recognized Financial Instruments Gross Amounts Offset in the Consolidated Statements of Financial Position Net Amounts Presented in the Consolidated Statements of Financial Position Financial Net Amount (in thousands) Offsetting of Financial Assets: Derivatives (1) $ 115,086 $ (115,086 ) $ 0 $ 0 $ 0 Securities purchased under agreements to resell 148,000 0 148,000 (148,000 ) 0 Total Assets $ 263,086 $ (115,086 ) $ 148,000 $ (148,000 ) $ 0 Offsetting of Financial Liabilities: Derivatives (1) $ 74,378 $ (69,718 ) $ 4,660 $ (245 ) $ 4,415 Securities sold under agreements to repurchase 0 0 0 0 0 Total Liabilities $ 74,378 $ (69,718 ) $ 4,660 $ (245 ) $ 4,415 (1) Amounts exclude the excess of collateral received/pledged from/to the counterparty.
Offsetting Of Financial Liabilities	The following table presents recognized derivative instruments (excluding embedded derivatives and associated reinsurance recoverables), and repurchase and reverse repurchase agreements that are offset in the Unaudited Interim Consolidated Statements of Financial Position, and/or are subject to an enforceable master netting arrangement or similar agreement, irrespective of whether they are offset in the Unaudited Interim Consolidated Statements of Financial Position. September 30, 2018 Gross Amounts of Recognized Financial Instruments Gross Amounts Offset in the Consolidated Statements of Financial Position Net Amounts Financial Instruments/ Collateral (1) Net Amount (in thousands) Offsetting of Financial Assets: Derivatives (1) $ 120,214 $ (112,098 ) $ 8,116 $ (5,961 ) $ 2,155 Securities purchased under agreements to resell 205,000 0 205,000 (205,000 ) 0 Total Assets $ 325,214 $ (112,098 ) $ 213,116 $ (210,961 ) $ 2,155 Offsetting of Financial Liabilities: Derivatives (1) $ 68,355 $ (68,355 ) $ 0 $ 0 $ 0 Securities sold under agreements to repurchase 0 0 0 0 0 Total Liabilities $ 68,355 $ (68,355 ) $ 0 $ 0 $ 0 December 31, 2017 Gross Amounts of Recognized Financial Instruments Gross Amounts Offset in the Consolidated Statements of Financial Position Net Amounts Presented in the Consolidated Statements of Financial Position Financial Net Amount (in thousands) Offsetting of Financial Assets: Derivatives (1) $ 115,086 $ (115,086 ) $ 0 $ 0 $ 0 Securities purchased under agreements to resell 148,000 0 148,000 (148,000 ) 0 Total Assets $ 263,086 $ (115,086 ) $ 148,000 $ (148,000 ) $ 0 Offsetting of Financial Liabilities: Derivatives (1) $ 74,378 $ (69,718 ) $ 4,660 $ (245 ) $ 4,415 Securities sold under agreements to repurchase 0 0 0 0 0 Total Liabilities $ 74,378 $ (69,718 ) $ 4,660 $ (245 ) $ 4,415 (1) Amounts exclude the excess of collateral received/pledged from/to the counterparty.
Schedule of Derivative Instruments, Gain (Loss) in Statement of Financial Performance	The following tables provide the financial statement classification and impact of derivatives used in qualifying and non-qualifying hedge relationships, excluding the offset of the hedged item in an effective hedge relationship. Three Months Ended September 30, 2018 Realized Net Other AOCI (1) (in thousands) Derivatives Designated as Hedge Accounting Instruments: Cash flow hedges Currency/Interest Rate $ 0 $ 1,767 $ 1,872 $ 1,454 Total cash flow hedges 0 1,767 1,872 1,454 Derivatives Not Qualifying as Hedge Accounting Instruments: Interest Rate (4,543 ) 0 0 0 Currency 230 0 0 0 Currency/Interest Rate (693 ) 0 18 0 Credit 0 0 0 0 Equity 20,901 0 0 0 Embedded Derivatives (64,288 ) 0 0 0 Total non-qualifying hedges (48,393 ) 0 18 0 Total $ (48,393 ) $ 1,767 $ 1,890 $ 1,454 Nine Months Ended September 30, 2018 Realized Net Other AOCI (1) (in thousands) Derivatives Designated as Hedge Accounting Instruments: Cash flow hedges Currency/Interest Rate $ 0 $ 4,916 $ 6,917 $ 10,111 Total cash flow hedges 0 4,916 6,917 10,111 Derivatives Not Qualifying as Hedge Accounting Instruments: Interest Rate (17,068 ) 0 0 0 Currency 895 0 0 0 Currency/Interest Rate 383 0 33 0 Credit (2 ) 0 0 0 Equity 23,725 0 0 0 Embedded Derivatives (138,967 ) 0 0 0 Total non-qualifying hedges (131,034 ) 0 33 0 Total $ (131,034 ) $ 4,916 $ 6,950 $ 10,111 Three Months Ended September 30, 2017 Realized Investment Gains (Losses) Net Investment Income Other Income AOCI (1) (in thousands) Derivatives Designated as Hedge Accounting Instruments: Cash flow hedges Currency/Interest Rate $ 0 $ 1,705 $ (3,013 ) $ (17,210 ) Total cash flow hedges 0 1,705 (3,013 ) (17,210 ) Derivatives Not Qualifying as Hedge Accounting Instruments: Interest Rate (2,160 ) 0 0 0 Currency (537 ) 0 0 0 Currency/Interest Rate (5,665 ) 0 (28 ) 0 Credit (7 ) 0 0 0 Equity 7,574 0 0 0 Embedded Derivatives (303,055 ) 0 0 0 Total non-qualifying hedges (303,850 ) 0 (28 ) 0 Total $ (303,850 ) $ 1,705 $ (3,041 ) $ (17,210 ) Nine Months Ended September 30, 2017 Realized Investment Gains (Losses) Net Investment Income Other Income AOCI (1) (in thousands) Derivatives Designated as Hedge Accounting Instruments: Cash flow hedges Currency/Interest Rate $ 0 $ 4,473 $ (7,805 ) $ (39,924 ) Total cash flow hedges 0 4,473 (7,805 ) (39,924 ) Derivatives Not Qualifying as Hedge Accounting Instruments: Interest Rate (528 ) 0 0 0 Currency (1,245 ) 0 0 0 Currency/Interest Rate (4,607 ) 0 (51 ) 0 Credit (44 ) 0 0 0 Equity 18,016 0 0 0 Embedded Derivatives (70,911 ) 0 0 0 Total non-qualifying hedges (59,319 ) 0 (51 ) 0 Total $ (59,319 ) $ 4,473 $ (7,856 ) $ (39,924 ) (1) Amounts deferred in AOCI.
Schedule of Derivative Instruments Recognized in Accumulated Other Comprehensive Income (Loss) Before Taxes	Presented below is a rollforward of current period cash flow hedges in AOCI before taxes: (in thousands) Balance, December 31, 2017 $ (17,678 ) Net deferred gains (losses) on cash flow hedges from January 1 to September 30, 2018 20,554 Amount reclassified into current period earnings (10,443 ) Balance, September 30, 2018 $ (7,567 )

Fair Value of Assets and Liab_2

Fair Value of Assets and Liabilities (Tables)	9 Months Ended
	Sep. 30, 2018
Fair Value Disclosures [Abstract]
Fair Value, Assets and Liabilities Measured on Recurring Basis	The tables below present the balances of assets and liabilities reported at fair value on a recurring basis, as of the dates indicated. As of September 30, 2018 Level 1 Level 2 Level 3 Netting(1) Total (in thousands) Fixed maturities, available-for-sale: U.S. Treasury securities and obligations of U.S. government authorities and agencies $ 0 $ 47,290 $ 25,346 $ 0 $ 72,636 Obligations of U.S. states and their political subdivisions 0 618,608 0 0 618,608 Foreign government bonds 0 202,859 159 0 203,018 U.S. corporate public securities 0 1,804,099 635 0 1,804,734 U.S. corporate private securities 0 859,118 30,938 0 890,056 Foreign corporate public securities 0 256,733 205 0 256,938 Foreign corporate private securities 0 831,980 11,689 0 843,669 Asset-backed securities(2) 0 157,383 6,632 0 164,015 Commercial mortgage-backed securities 0 269,610 20,048 0 289,658 Residential mortgage-backed securities 0 91,376 0 0 91,376 Subtotal 0 5,139,056 95,652 0 5,234,708 Fixed maturities, trading 0 36,688 0 0 36,688 Equity securities 124 27,094 16,327 0 43,545 Short-term investments 0 0 456 0 456 Cash equivalents 0 3,934 0 0 3,934 Other invested assets(3) 0 120,217 0 (112,098 ) 8,119 Reinsurance recoverables 0 0 2,958,093 0 2,958,093 Receivables from parent and affiliates 0 127,181 0 0 127,181 Subtotal excluding separate account assets 124 5,454,170 3,070,528 (112,098 ) 8,412,724 Separate account assets(4)(5) 0 126,230,592 0 0 126,230,592 Total assets $ 124 $ 131,684,762 $ 3,070,528 $ (112,098 ) $ 134,643,316 Future policy benefits(6) $ 0 $ 0 $ 2,908,324 $ 0 $ 2,908,324 Policyholders' account balances 0 0 60,847 0 60,847 Payables to parent and affiliates 0 68,355 0 (68,355 ) 0 Other liabilities 0 0 41,333 0 41,333 Total liabilities $ 0 $ 68,355 $ 3,010,504 $ (68,355 ) $ 3,010,504 As of December 31, 2017 Level 1 Level 2 Level 3 Netting(1) Total (in thousands) Fixed maturities, available-for-sale: U.S. Treasury securities and obligations of U.S. government authorities and agencies $ 0 $ 80,611 $ 19,204 $ 0 $ 99,815 Obligations of U.S. states and their political subdivisions 0 635,458 0 0 635,458 Foreign government bonds 0 134,924 174 0 135,098 U.S. corporate public securities 0 1,779,935 1,154 0 1,781,089 U.S. corporate private securities 0 901,080 60,158 0 961,238 Foreign corporate public securities 0 182,243 209 0 182,452 Foreign corporate private securities 0 837,766 13,900 0 851,666 Asset-backed securities(2) 0 71,400 111,028 0 182,428 Commercial mortgage-backed securities 0 322,832 0 0 322,832 Residential mortgage-backed securities 0 71,226 0 0 71,226 Subtotal 0 5,017,475 205,827 0 5,223,302 Fixed maturities, trading(7) 0 38,793 0 0 38,793 Equity securities(7) 94 22,991 17,525 0 40,610 Short-term investments 0 0 1,339 0 1,339 Cash equivalents 0 28,007 0 0 28,007 Other invested assets(3)(7) 0 115,094 0 (115,086 ) 8 Reinsurance recoverables 0 0 5,457,649 0 5,457,649 Receivables from parent and affiliates 0 132,571 0 0 132,571 Subtotal excluding separate account assets 94 5,354,931 5,682,340 (115,086 ) 10,922,279 Separate account assets(4)(5) 0 125,543,035 0 0 125,543,035 Total assets $ 94 $ 130,897,966 $ 5,682,340 $ (115,086 ) $ 136,465,314 Future policy benefits(6) $ 0 $ 0 $ 5,452,583 $ 0 $ 5,452,583 Policyholders' account balances 0 0 46,651 0 46,651 Payables to parent and affiliates 0 74,378 0 (69,718 ) 4,660 Other liabilities 0 0 0 0 0 Total liabilities $ 0 $ 74,378 $ 5,499,234 $ (69,718 ) $ 5,503,894 (1) “Netting” amounts represent cash collateral of $43.7 million and $45.4 million as of September 30, 2018 and December 31, 2017 , respectively, and the impact of offsetting asset and liability positions held with the same counterparty, subject to master netting arrangements. (2) Includes credit tranched securities collateralized by syndicated bank loans, sub-prime mortgages, auto loans, credit cards, education loans and other asset types. (3) Other invested assets excluded from the fair value hierarchy include certain hedge funds, private equity funds and other funds for which fair value is measured at net asset value ("NAV") per share (or its equivalent) as a practical expedient. At September 30, 2018 and December 31, 2017 , the fair values of such investments were $68 million and $0.7 million , respectively. (4) Separate account assets represent segregated funds that are invested for certain customers. Investment risks associated with market value changes are borne by the customers, except to the extent of minimum guarantees made by the Company with respect to certain accounts. Separate account liabilities are not included in the above table as they are reported at contract value and not fair value in the Company's Unaudited Interim Consolidated Statements of Financial Position. (5) Separate account assets included in the fair value hierarchy exclude investments in entities that calculate NAV per share (or its equivalent) as a practical expedient. Such investments excluded from the fair value hierarchy include investments in real estate, hedge funds and a corporate owned life insurance fund, for which fair value is measured at NAV per share (or its equivalent). As of September 30, 2018 and December 31, 2017 , the fair value of such investments was $4,276 million and $4,113 million , respectively. (6) As of September 30, 2018 , the net embedded derivative liability position of $2,908 million includes $1,097 million of embedded derivatives in an asset position and $4,005 million of embedded derivatives in a liability position. As of December 31, 2017 , the net embedded derivative liability position of $5,453 million includes $823 million of embedded derivatives in an asset position and $6,276 million of embedded derivatives in a liability position. (7) Prior period amounts have been reclassified to conform to current period presentation. See Note 2 for details.
Fair Value Inputs, Assets and Liabilities, Quantitative Information	The tables below present quantitative information on significant internally-priced Level 3 assets and liabilities. As of September 30, 2018 Fair Value Valuation Techniques Unobservable Inputs Minimum Maximum Weighted Average Impact of Increase in Input on Fair Value(1) (in thousands) Assets: Corporate securities(2) $ 20,938 Discounted cash flow Discount rate 7.00 % 20.00 % 9.96 % Decrease Liquidation Liquidation value 6.00 % 54.00 % 51.00 % Increase Reinsurance recoverables $ 2,958,093 Fair values are determined in the same manner as future policy benefits Liabilities: Future policy benefits(3) $ 2,908,324 Discounted cash flow Lapse rate(4) 1 % 13 % Decrease Spread over LIBOR(5) 0.16 % 1.21 % Decrease Utilization rate(6) 50 % 97 % Increase Withdrawal rate See table footnote (7) below Mortality rate(8) 0 % 15 % Decrease Equity volatility curve 14 % 22 % Increase As of December 31, 2017 Fair Value Valuation Techniques Unobservable Inputs Minimum Maximum Weighted Average Impact of Increase in Input on Fair Value(1) (in thousands) Assets: Corporate securities(2) $ 36,966 Discounted cash flow Discount rate 5.06 % 22.23 % 7.33 % Decrease Liquidation Liquidation value 25.00 % 25.00 % 25.00 % Increase Reinsurance recoverables $ 5,457,649 Fair values are determined in the same manner as future policy benefits Liabilities: Future policy benefits(3) $ 5,452,583 Discounted cash flow Lapse rate(4) 1 % 12 % Decrease Spread over LIBOR(5) 0.12 % 1.10 % Decrease Utilization rate(6) 52 % 97 % Increase Withdrawal rate See table footnote (7) below Mortality rate(8) 0 % 14 % Decrease Equity volatility curve 13 % 24 % Increase (1) Conversely, the impact of a decrease in input would have the opposite impact on fair value as that presented in the table. (2) Includes assets classified as fixed maturities, available-for-sale. (3) Future policy benefits primarily represent general account liabilities for the living benefit features of the Company’s variable annuity contracts which are accounted for as embedded derivatives. Since the valuation methodology for these liabilities uses a range of inputs that vary at the contract level over the cash flow projection period, presenting a range, rather than weighted average, is a more meaningful representation of the unobservable inputs used in the valuation. (4) Lapse rates are adjusted at the contract level based on the in-the-moneyness of the living benefit and reflect other factors, such as the applicability of any surrender charges. Lapse rates are reduced when contracts are more in-the-money. Lapse rates are also generally assumed to be lower for the period where surrender charges apply. (5) The spread over the London Inter-Bank Offered Rate ("LIBOR") swap curve represents the premium added to the proxy for the risk-free rate (LIBOR) to reflect our estimates of rates that a market participant would use to value the living benefit contracts in both the accumulation and payout phases. This spread includes an estimate of NPR, which is the risk that the obligation will not be fulfilled by the Company. NPR is primarily estimated by utilizing the credit spreads associated with issuing funding agreements, adjusted for any illiquidity risk premium. In order to reflect the financial strength ratings of the Company, credit spreads associated with funding agreements, as opposed to credit spread associated with debt, are utilized in developing this estimate because both funding agreements and living benefit contracts are insurance liabilities and are therefore senior to debt. (6) The utilization rate assumption estimates the percentage of contracts that will utilize the benefit during the contract duration and begin lifetime withdrawals at various time intervals from contract inception. The remaining contractholders are assumed to either begin lifetime withdrawals immediately or never utilize the benefit. Utilization assumptions may vary by product type, tax status and age. The impact of changes in these assumptions is highly dependent on the product type, the age of the contractholder at the time of the sale, and the timing of the first lifetime income withdrawal. Range reflects the utilization rate for the vast majority of business with living benefits. (7) The withdrawal rate assumption estimates the magnitude of annual contractholder withdrawals relative to the maximum allowable amount under the contract. These assumptions vary based on the age of the contractholder, the tax status of the contract and the duration since the contractholder began lifetime withdrawals. As of September 30, 2018 and December 31, 2017 , the minimum withdrawal rate assumption is 78% and the maximum withdrawal rate assumption may be greater than 100% . The fair value of the liability will generally increase the closer the withdrawal rate is to 100% and decrease as the withdrawal rate moves further away from 100%. (8) Range reflects the mortality rate for the vast majority of business with living benefits, with policyholders ranging from 50 to 90 years old. While the majority of living benefits have a minimum age requirement, certain benefits do not have an age restriction. This results in contractholders for certain benefits with mortality rates approaching 0% . Based on historical experience, the Company applies a set of age and duration specific mortality rate adjustments compared to standard industry tables. A mortality improvement assumption is also incorporated into the overall mortality table.
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation	The following tables describe changes in fair values of Level 3 assets and liabilities as of the dates indicated, as well as the portion of gains or losses included in income attributable to unrealized gains or losses related to those assets and liabilities still held at the end of their respective periods. When a determination is made to classify assets and liabilities within Level 3, the determination is based on significance of the unobservable inputs in the overall fair value measurement. All transfers are based on changes in the observability of the valuation inputs, including the availability of pricing service information that the Company can validate. All transfers are generally reported at the value as of the beginning of the quarter in which transfers occur for any such assets still held at the end of the quarter. During the second quarter of 2018, $81 million of investments in collateralized loan obligations (“CLOs”) reported as “Asset-backed securities” were transferred from Level 3 to Level 2 as market activity, liquidity and overall observability of valuation inputs of CLOs have increased. For further information on valuation processes, see Note 9 to the Consolidated Financial Statements included in the Company's Annual Report on Form 10-K for the year ended December 31, 2017 . Three Months Ended September 30, 2018 Fixed Maturities, Available-for-Sale U. S. Government Foreign Government Bonds Corporate Securities(1) Structured Securities(2) (in thousands) Fair Value, beginning of period $ 24,411 $ 160 $ 62,418 $ 19,661 Total gains (losses) (realized/unrealized): Included in earnings: Realized investment gains (losses), net 0 0 (822 ) 13 Asset administration fees and other income 0 0 0 0 Included in other comprehensive income (loss) 0 0 (2,249 ) (426 ) Net investment income 0 0 154 (11 ) Purchases 935 0 669 20,229 Sales 0 0 0 (10,648 ) Issuances 0 0 0 0 Settlements 0 0 (12,767 ) (2,138 ) Transfers into Level 3(4) 0 0 0 0 Transfers out of Level 3(4) 0 0 (3,936 ) 0 Other(5) 0 (1 ) 0 0 Fair Value, end of period $ 25,346 $ 159 $ 43,467 $ 26,680 Unrealized gains (losses) for assets still held(6): Included in earnings: Realized investment gains (losses), net $ 0 $ 0 $ (1,310 ) $ 0 Asset administration fees and other income $ 0 $ 0 $ 0 $ 0 Three Months Ended September 30, 2018 Equity Securities Short-term Investments Cash Equivalents Other Invested Assets Reinsurance Recoverables (in thousands) Fair Value, beginning of period $ 16,625 $ 333 $ 564 $ 5 $ 3,943,881 Total gains (losses) (realized/unrealized): Included in earnings: Realized investment gains (losses), net(7) 0 0 0 4 (1,210,408 ) Asset administration fees and other income (223 ) 0 0 0 0 Included in other comprehensive income (loss) 0 0 0 0 0 Net investment income 0 0 0 0 0 Purchases 0 5,440 0 0 224,620 Sales (75 ) 0 0 0 0 Issuances 0 0 0 0 0 Settlements 0 (5,316 ) (564 ) 0 0 Transfers into Level 3(4) 0 0 0 0 0 Transfers out of Level 3(4) 0 0 0 (9 ) 0 Other(5) 0 (1 ) 0 0 0 Fair Value, end of period $ 16,327 $ 456 $ 0 $ 0 $ 2,958,093 Unrealized gains (losses) for assets still held(6): Included in earnings: Realized investment gains (losses), net $ 0 $ (1 ) $ 0 $ 4 $ (1,174,501 ) Asset administration fees and other income $ (222 ) $ 0 $ 0 $ 0 $ 0 Three Months Ended September 30, 2018 Receivables from parent and affiliates Future Policy Benefits Policyholders' Account Balances Other Liabilities (in thousands) Fair Value, beginning of period $ 0 $ (3,916,973 ) $ (41,946 ) $ (17,610 ) Total gains (losses) (realized/unrealized): Included in earnings: Realized investment gains (losses), net(7) 0 1,240,116 (21,841 ) (32,501 ) Asset administration fees and other income 0 0 0 0 Included in other comprehensive income (loss) 0 0 0 0 Net investment income 0 0 0 0 Purchases 0 0 0 8,778 Sales 0 0 0 0 Issuances 0 (231,467 ) 0 0 Settlements 0 0 2,940 0 Transfers into Level 3(4) 0 0 0 0 Transfers out of Level 3(4) 0 0 0 0 Other 0 0 0 0 Fair Value, end of period $ 0 $ (2,908,324 ) $ (60,847 ) $ (41,333 ) Unrealized gains (losses) for assets/liabilities still held(6): Included in earnings: Realized investment gains (losses), net $ 0 $ 1,204,459 $ (21,841 ) $ (32,750 ) Asset administration fees and other income $ 0 $ 0 $ 0 $ 0 Nine Months Ended September 30, 2018 Fixed Maturities, Available-for-Sale U. S. Government Foreign Government Bonds Corporate Securities(1) Structured Securities(2) (in thousands) Fair Value, beginning of period $ 19,204 $ 0 $ 75,421 $ 111,028 Total gains (losses) (realized/unrealized): Included in earnings: Realized investment gains (losses), net 0 0 (1,078 ) 34 Asset administration fees and other income 0 0 0 0 Included in other comprehensive income (loss) 0 (15 ) (2,839 ) (528 ) Net investment income 0 1 289 17 Purchases 6,142 0 4,816 31,067 Sales 0 0 (201 ) (10,844 ) Issuances 0 0 0 0 Settlements 0 0 (32,838 ) (10,204 ) Transfers into Level 3(4) 0 0 4,028 13,513 Transfers out of Level 3(4) 0 0 (4,145 ) (107,403 ) Other(5) 0 173 14 0 Fair Value, end of period $ 25,346 $ 159 $ 43,467 $ 26,680 Unrealized gains (losses) for assets still held(6): Included in earnings: Realized investment gains (losses), net $ 0 $ 0 $ (1,385 ) $ 0 Asset administration fees and other income $ 0 $ 0 $ 0 $ 0 Nine Months Ended September 30, 2018 Equity Securities Short-term Investments Cash Equivalents Other Invested Assets Reinsurance Recoverables (in thousands) Fair Value, beginning of period $ 17,525 $ 1,339 $ 0 $ 0 $ 5,457,649 Total gains (losses) (realized/unrealized): Included in earnings: Realized investment gains (losses), net(7) 0 (18 ) 0 0 (3,164,957 ) Asset administration fees and other income (1,123 ) 0 0 0 0 Included in other comprehensive income (loss) 0 0 0 0 0 Net investment income 0 0 0 0 0 Purchases 0 10,710 2,550 0 665,401 Sales (75 ) 0 0 0 0 Issuances 0 0 0 0 0 Settlements 0 (11,560 ) (2,550 ) 0 0 Transfers into Level 3(4) 0 0 0 9 0 Transfers out of Level 3(4) 0 0 0 (9 ) 0 Other(5) 0 (15 ) 0 0 0 Fair Value, end of period $ 16,327 $ 456 $ 0 $ 0 $ 2,958,093 Unrealized gains (losses) for assets still held(6): Included in earnings: Realized investment gains (losses), net $ 0 $ (19 ) $ 0 $ 0 $ (3,000,498 ) Asset administration fees and other income $ (1,123 ) $ 0 $ 0 $ 0 $ 0 Nine Months Ended September 30, 2018 Receivables from parent and affiliates Future Policy Benefits Policyholders' Account Balances Other Liabilities (in thousands) Fair Value, beginning of period $ 0 $ (5,452,583 ) $ (46,651 ) $ 0 Total gains (losses) (realized/unrealized): Included in earnings: Realized investment gains (losses), net(7) 0 3,230,314 (24,687 ) (67,816 ) Asset administration fees and other income 0 0 0 0 Included in other comprehensive income (loss) (20 ) 0 0 0 Net investment income 0 0 0 0 Purchases 0 0 0 26,483 Sales 0 0 0 0 Issuances 0 (686,055 ) 0 0 Settlements 0 0 10,491 0 Transfers into Level 3(4) 6,551 0 0 0 Transfers out of Level 3(4) (6,531 ) 0 0 0 Other 0 0 0 0 Fair Value, end of period $ 0 $ (2,908,324 ) $ (60,847 ) $ (41,333 ) Unrealized gains (losses) for assets/liabilities still held(6): Included in earnings: Realized investment gains (losses), net $ 0 $ 3,065,835 $ (24,688 ) $ (67,796 ) Asset administration fees and other income $ 0 $ 0 $ 0 $ 0 Three Months Ended September 30, 2017 Fixed Maturities, Available-for-Sale U. S. Government Corporate Securities(1) Structured Securities(2)(3) (in thousands) Fair Value, beginning of period $ 11,552 $ 45,375 $ 68,350 Total gains (losses) (realized/unrealized): Included in earnings: Realized investment gains (losses), net 0 (138 ) 13 Asset administration fees and other income 0 0 0 Included in other comprehensive income (loss) 0 115 187 Net investment income 0 30 9 Purchases 3,358 1,841 37,532 Sales 0 0 0 Issuances 0 0 0 Settlements 0 (2,396 ) (3,317 ) Transfers into Level 3(4) 0 3,223 2,767 Transfers out of Level 3(4) 0 (1,099 ) (1,506 ) Other(5) 0 (12 ) 0 Fair Value, end of period $ 14,910 $ 46,939 $ 104,035 Unrealized gains (losses) for assets still held(6): Included in earnings: Realized investment gains (losses), net $ 0 $ (157 ) $ 0 Asset administration fees and other income $ 0 $ 0 $ 0 Three Months Ended September 30, 2017 Equity Securities(3) Short-term Investments Other Invested Assets(3) Reinsurance Recoverables (in thousands) Fair Value, beginning of period $ 17,350 $ 0 $ 0 $ 7,192,057 Total gains (losses) (realized/unrealized): Included in earnings: Realized investment gains (losses), net(7) 0 0 0 (1,377,548 ) Asset administration fees and other income (198 ) 0 0 0 Included in other comprehensive income (loss) (1 ) 0 0 0 Net investment income 0 0 0 0 Purchases 0 3,319 0 223,330 Sales 0 0 0 0 Issuances 0 0 0 0 Settlements 0 (2,607 ) 0 0 Transfers into Level 3(4) 0 0 0 0 Transfers out of Level 3(4) 0 0 0 0 Other(5) 11 0 0 (760,102 ) Fair Value, end of period $ 17,162 $ 712 $ 0 $ 5,277,737 Unrealized gains (losses) for assets/liabilities still held(6): Included in earnings: Realized investment gains (losses), net $ 0 $ 0 $ 0 $ (1,320,981 ) Asset administration fees and other income $ (198 ) $ 0 $ 0 $ 0 Three Months Ended September 30, 2017 Receivables from parent and affiliates Future Policy Benefits Policyholders' Account Balances Other Liabilities (in thousands) Fair Value, beginning of period $ 0 $ (6,424,559 ) $ (31,978 ) $ 0 Total gains (losses) (realized/unrealized): Included in earnings: Realized investment gains (losses), net(7) 0 1,373,736 (6,209 ) 0 Asset administration fees and other income 0 0 0 0 Interest credited to policyholders' account balances 0 0 18,688 0 Included in other comprehensive income (loss) 0 0 0 0 Net investment income 0 0 0 0 Purchases 0 0 0 0 Sales 0 0 0 0 Issuances 0 (221,503 ) 0 0 Settlements 0 0 (17,026 ) 0 Transfers into Level 3(4) 0 0 0 0 Transfers out of Level 3(4) 0 0 0 0 Other 0 0 0 0 Fair Value, end of period $ 0 $ (5,272,326 ) $ (36,525 ) $ 0 Unrealized gains (losses) for assets/liabilities still held(6): Included in earnings: Realized investment gains (losses), net $ 0 $ 1,327,927 $ (6,209 ) $ 0 Asset administration fees and other income $ 0 $ 0 $ 0 $ 0 Interest credited to policyholders' account balances $ 0 $ 0 $ 7,017 $ 0 Nine Months Ended September 30, 2017 Fixed Maturities, Available-for-Sale U. S. Government Corporate Securities(1) Structured Securities(2)(3) (in thousands) Fair Value, beginning of period $ 0 $ 102,556 $ 19,856 Total gains (losses) (realized/unrealized): Included in earnings: Realized investment gains (losses), net 0 (670 ) 4,061 Asset administration fees and other income 0 0 0 Included in other comprehensive income (loss) 0 1,613 (3,455 ) Net investment income 0 89 97 Purchases 11,340 13,666 66,174 Sales 0 (52,197 ) (7,471 ) Issuances 0 0 0 Settlements 0 (15,049 ) (46,117 ) Transfers into Level 3(4) 0 5,204 75,143 Transfers out of Level 3(4) 0 (4,691 ) (4,253 ) Other(5) 3,570 (3,582 ) 0 Fair Value, end of period $ 14,910 $ 46,939 $ 104,035 Unrealized gains (losses) for assets still held(6): Included in earnings: Realized investment gains (losses), net $ 0 $ (1,265 ) $ 0 Asset administration fees and other income $ 0 $ 0 $ 0 Nine Months Ended September 30, 2017 Equity Securities(3) Short-term Investments Other Invested Assets(3) Reinsurance Recoverables (in thousands) Fair Value, beginning of period $ 15,845 $ 0 $ 0 $ 5,474,263 Total gains (losses) (realized/unrealized): Included in earnings: Realized investment gains (losses), net(7) 0 0 0 (115,660 ) Asset administration fees and other income 1,339 0 0 0 Included in other comprehensive income (loss) (33 ) 0 0 0 Net investment income 0 0 0 0 Purchases 0 3,319 0 679,236 Sales 0 0 0 0 Issuances 0 0 0 0 Settlements 0 (2,607 ) 0 0 Transfers into Level 3(4) 0 0 8 0 Transfers out of Level 3(4) 0 0 (8 ) 0 Other(5) 11 0 0 (760,102 ) Fair Value, end of period $ 17,162 $ 712 $ 0 $ 5,277,737 Unrealized gains (losses) for assets/liabilities still held(6): Included in earnings: Realized investment gains (losses), net $ 0 $ 0 $ 0 $ (308,066 ) Asset administration fees and other income $ 1,977 $ 0 $ 0 $ 0 Nine Months Ended September 30, 2017 Receivables from parent and affiliates Future Policy Benefits Policyholders' Account Balances Other Liabilities (in thousands) Fair Value, beginning of period $ 6,493 $ (5,041,007 ) $ (20,337 ) $ 0 Total gains (losses) (realized/unrealized): Included in earnings: Realized investment gains (losses), net(7) 0 422,822 (18,345 ) 0 Asset administration fees and other income 0 0 0 0 Interest credited to policyholders' account balances 0 0 18,688 0 Included in other comprehensive income (loss) 0 0 0 0 Net investment income 0 0 0 0 Purchases 0 0 0 0 Sales 0 0 0 0 Issuances 0 (654,141 ) 0 0 Settlements 0 0 (16,531 ) 0 Transfers into Level 3(4) 0 0 0 0 Transfers out of Level 3(4) (6,493 ) 0 0 0 Other 0 0 0 0 Fair Value, end of period $ 0 $ (5,272,326 ) $ (36,525 ) $ 0 Unrealized gains (losses) for assets/liabilities still held(6): Included in earnings: Realized investment gains (losses), net $ 0 $ 311,314 $ (18,345 ) $ 0 Asset administration fees and other income $ 0 $ 0 $ 0 $ 0 Interest credited to policyholders' account balances $ 0 $ 0 $ 18,688 $ 0 (1) Includes U.S. corporate public, U.S. corporate private, foreign corporate public and foreign corporate private securities. Prior period amounts were aggregated to conform to current period presentation. (2) Includes asset-backed, commercial mortgage-backed and residential mortgage-backed securities. Prior period amounts were aggregated to conform to current period presentation. (3) Prior period amounts have been reclassified to conform to current period presentation. See Note 2 for details. (4) Transfers into or out of any level are generally reported at the value as of the beginning of the quarter in which the transfers occur for any such assets still held at the end of the quarter. (5) Other, except for Reinsurance Recoverables, primarily represents reclassifications of certain assets and liabilities between reporting categories. Other for Reinsurance Recoverables for the three and nine months ended September 30, 2017 , represents the Company's recapture of the risks related to the no-lapse guarantees that were previously reinsured to Universal Prudential Arizona Reinsurance Company ("UPARC") and the discontinuation of embedded derivative accounting, effective July 1, 2017. (6) Unrealized gains or losses related to assets still held at the end of the period do not include amortization or accretion of premiums and discounts. (7) Realized investment gains (losses) on future policy benefits and reinsurance recoverables primarily represent the change in the fair value of the Company's living benefit guarantees on certain of its variable annuity contracts.
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation	The following tables describe changes in fair values of Level 3 assets and liabilities as of the dates indicated, as well as the portion of gains or losses included in income attributable to unrealized gains or losses related to those assets and liabilities still held at the end of their respective periods. When a determination is made to classify assets and liabilities within Level 3, the determination is based on significance of the unobservable inputs in the overall fair value measurement. All transfers are based on changes in the observability of the valuation inputs, including the availability of pricing service information that the Company can validate. All transfers are generally reported at the value as of the beginning of the quarter in which transfers occur for any such assets still held at the end of the quarter. During the second quarter of 2018, $81 million of investments in collateralized loan obligations (“CLOs”) reported as “Asset-backed securities” were transferred from Level 3 to Level 2 as market activity, liquidity and overall observability of valuation inputs of CLOs have increased. For further information on valuation processes, see Note 9 to the Consolidated Financial Statements included in the Company's Annual Report on Form 10-K for the year ended December 31, 2017 . Three Months Ended September 30, 2018 Fixed Maturities, Available-for-Sale U. S. Government Foreign Government Bonds Corporate Securities(1) Structured Securities(2) (in thousands) Fair Value, beginning of period $ 24,411 $ 160 $ 62,418 $ 19,661 Total gains (losses) (realized/unrealized): Included in earnings: Realized investment gains (losses), net 0 0 (822 ) 13 Asset administration fees and other income 0 0 0 0 Included in other comprehensive income (loss) 0 0 (2,249 ) (426 ) Net investment income 0 0 154 (11 ) Purchases 935 0 669 20,229 Sales 0 0 0 (10,648 ) Issuances 0 0 0 0 Settlements 0 0 (12,767 ) (2,138 ) Transfers into Level 3(4) 0 0 0 0 Transfers out of Level 3(4) 0 0 (3,936 ) 0 Other(5) 0 (1 ) 0 0 Fair Value, end of period $ 25,346 $ 159 $ 43,467 $ 26,680 Unrealized gains (losses) for assets still held(6): Included in earnings: Realized investment gains (losses), net $ 0 $ 0 $ (1,310 ) $ 0 Asset administration fees and other income $ 0 $ 0 $ 0 $ 0 Three Months Ended September 30, 2018 Equity Securities Short-term Investments Cash Equivalents Other Invested Assets Reinsurance Recoverables (in thousands) Fair Value, beginning of period $ 16,625 $ 333 $ 564 $ 5 $ 3,943,881 Total gains (losses) (realized/unrealized): Included in earnings: Realized investment gains (losses), net(7) 0 0 0 4 (1,210,408 ) Asset administration fees and other income (223 ) 0 0 0 0 Included in other comprehensive income (loss) 0 0 0 0 0 Net investment income 0 0 0 0 0 Purchases 0 5,440 0 0 224,620 Sales (75 ) 0 0 0 0 Issuances 0 0 0 0 0 Settlements 0 (5,316 ) (564 ) 0 0 Transfers into Level 3(4) 0 0 0 0 0 Transfers out of Level 3(4) 0 0 0 (9 ) 0 Other(5) 0 (1 ) 0 0 0 Fair Value, end of period $ 16,327 $ 456 $ 0 $ 0 $ 2,958,093 Unrealized gains (losses) for assets still held(6): Included in earnings: Realized investment gains (losses), net $ 0 $ (1 ) $ 0 $ 4 $ (1,174,501 ) Asset administration fees and other income $ (222 ) $ 0 $ 0 $ 0 $ 0 Three Months Ended September 30, 2018 Receivables from parent and affiliates Future Policy Benefits Policyholders' Account Balances Other Liabilities (in thousands) Fair Value, beginning of period $ 0 $ (3,916,973 ) $ (41,946 ) $ (17,610 ) Total gains (losses) (realized/unrealized): Included in earnings: Realized investment gains (losses), net(7) 0 1,240,116 (21,841 ) (32,501 ) Asset administration fees and other income 0 0 0 0 Included in other comprehensive income (loss) 0 0 0 0 Net investment income 0 0 0 0 Purchases 0 0 0 8,778 Sales 0 0 0 0 Issuances 0 (231,467 ) 0 0 Settlements 0 0 2,940 0 Transfers into Level 3(4) 0 0 0 0 Transfers out of Level 3(4) 0 0 0 0 Other 0 0 0 0 Fair Value, end of period $ 0 $ (2,908,324 ) $ (60,847 ) $ (41,333 ) Unrealized gains (losses) for assets/liabilities still held(6): Included in earnings: Realized investment gains (losses), net $ 0 $ 1,204,459 $ (21,841 ) $ (32,750 ) Asset administration fees and other income $ 0 $ 0 $ 0 $ 0 Nine Months Ended September 30, 2018 Fixed Maturities, Available-for-Sale U. S. Government Foreign Government Bonds Corporate Securities(1) Structured Securities(2) (in thousands) Fair Value, beginning of period $ 19,204 $ 0 $ 75,421 $ 111,028 Total gains (losses) (realized/unrealized): Included in earnings: Realized investment gains (losses), net 0 0 (1,078 ) 34 Asset administration fees and other income 0 0 0 0 Included in other comprehensive income (loss) 0 (15 ) (2,839 ) (528 ) Net investment income 0 1 289 17 Purchases 6,142 0 4,816 31,067 Sales 0 0 (201 ) (10,844 ) Issuances 0 0 0 0 Settlements 0 0 (32,838 ) (10,204 ) Transfers into Level 3(4) 0 0 4,028 13,513 Transfers out of Level 3(4) 0 0 (4,145 ) (107,403 ) Other(5) 0 173 14 0 Fair Value, end of period $ 25,346 $ 159 $ 43,467 $ 26,680 Unrealized gains (losses) for assets still held(6): Included in earnings: Realized investment gains (losses), net $ 0 $ 0 $ (1,385 ) $ 0 Asset administration fees and other income $ 0 $ 0 $ 0 $ 0 Nine Months Ended September 30, 2018 Equity Securities Short-term Investments Cash Equivalents Other Invested Assets Reinsurance Recoverables (in thousands) Fair Value, beginning of period $ 17,525 $ 1,339 $ 0 $ 0 $ 5,457,649 Total gains (losses) (realized/unrealized): Included in earnings: Realized investment gains (losses), net(7) 0 (18 ) 0 0 (3,164,957 ) Asset administration fees and other income (1,123 ) 0 0 0 0 Included in other comprehensive income (loss) 0 0 0 0 0 Net investment income 0 0 0 0 0 Purchases 0 10,710 2,550 0 665,401 Sales (75 ) 0 0 0 0 Issuances 0 0 0 0 0 Settlements 0 (11,560 ) (2,550 ) 0 0 Transfers into Level 3(4) 0 0 0 9 0 Transfers out of Level 3(4) 0 0 0 (9 ) 0 Other(5) 0 (15 ) 0 0 0 Fair Value, end of period $ 16,327 $ 456 $ 0 $ 0 $ 2,958,093 Unrealized gains (losses) for assets still held(6): Included in earnings: Realized investment gains (losses), net $ 0 $ (19 ) $ 0 $ 0 $ (3,000,498 ) Asset administration fees and other income $ (1,123 ) $ 0 $ 0 $ 0 $ 0 Nine Months Ended September 30, 2018 Receivables from parent and affiliates Future Policy Benefits Policyholders' Account Balances Other Liabilities (in thousands) Fair Value, beginning of period $ 0 $ (5,452,583 ) $ (46,651 ) $ 0 Total gains (losses) (realized/unrealized): Included in earnings: Realized investment gains (losses), net(7) 0 3,230,314 (24,687 ) (67,816 ) Asset administration fees and other income 0 0 0 0 Included in other comprehensive income (loss) (20 ) 0 0 0 Net investment income 0 0 0 0 Purchases 0 0 0 26,483 Sales 0 0 0 0 Issuances 0 (686,055 ) 0 0 Settlements 0 0 10,491 0 Transfers into Level 3(4) 6,551 0 0 0 Transfers out of Level 3(4) (6,531 ) 0 0 0 Other 0 0 0 0 Fair Value, end of period $ 0 $ (2,908,324 ) $ (60,847 ) $ (41,333 ) Unrealized gains (losses) for assets/liabilities still held(6): Included in earnings: Realized investment gains (losses), net $ 0 $ 3,065,835 $ (24,688 ) $ (67,796 ) Asset administration fees and other income $ 0 $ 0 $ 0 $ 0 Three Months Ended September 30, 2017 Fixed Maturities, Available-for-Sale U. S. Government Corporate Securities(1) Structured Securities(2)(3) (in thousands) Fair Value, beginning of period $ 11,552 $ 45,375 $ 68,350 Total gains (losses) (realized/unrealized): Included in earnings: Realized investment gains (losses), net 0 (138 ) 13 Asset administration fees and other income 0 0 0 Included in other comprehensive income (loss) 0 115 187 Net investment income 0 30 9 Purchases 3,358 1,841 37,532 Sales 0 0 0 Issuances 0 0 0 Settlements 0 (2,396 ) (3,317 ) Transfers into Level 3(4) 0 3,223 2,767 Transfers out of Level 3(4) 0 (1,099 ) (1,506 ) Other(5) 0 (12 ) 0 Fair Value, end of period $ 14,910 $ 46,939 $ 104,035 Unrealized gains (losses) for assets still held(6): Included in earnings: Realized investment gains (losses), net $ 0 $ (157 ) $ 0 Asset administration fees and other income $ 0 $ 0 $ 0 Three Months Ended September 30, 2017 Equity Securities(3) Short-term Investments Other Invested Assets(3) Reinsurance Recoverables (in thousands) Fair Value, beginning of period $ 17,350 $ 0 $ 0 $ 7,192,057 Total gains (losses) (realized/unrealized): Included in earnings: Realized investment gains (losses), net(7) 0 0 0 (1,377,548 ) Asset administration fees and other income (198 ) 0 0 0 Included in other comprehensive income (loss) (1 ) 0 0 0 Net investment income 0 0 0 0 Purchases 0 3,319 0 223,330 Sales 0 0 0 0 Issuances 0 0 0 0 Settlements 0 (2,607 ) 0 0 Transfers into Level 3(4) 0 0 0 0 Transfers out of Level 3(4) 0 0 0 0 Other(5) 11 0 0 (760,102 ) Fair Value, end of period $ 17,162 $ 712 $ 0 $ 5,277,737 Unrealized gains (losses) for assets/liabilities still held(6): Included in earnings: Realized investment gains (losses), net $ 0 $ 0 $ 0 $ (1,320,981 ) Asset administration fees and other income $ (198 ) $ 0 $ 0 $ 0 Three Months Ended September 30, 2017 Receivables from parent and affiliates Future Policy Benefits Policyholders' Account Balances Other Liabilities (in thousands) Fair Value, beginning of period $ 0 $ (6,424,559 ) $ (31,978 ) $ 0 Total gains (losses) (realized/unrealized): Included in earnings: Realized investment gains (losses), net(7) 0 1,373,736 (6,209 ) 0 Asset administration fees and other income 0 0 0 0 Interest credited to policyholders' account balances 0 0 18,688 0 Included in other comprehensive income (loss) 0 0 0 0 Net investment income 0 0 0 0 Purchases 0 0 0 0 Sales 0 0 0 0 Issuances 0 (221,503 ) 0 0 Settlements 0 0 (17,026 ) 0 Transfers into Level 3(4) 0 0 0 0 Transfers out of Level 3(4) 0 0 0 0 Other 0 0 0 0 Fair Value, end of period $ 0 $ (5,272,326 ) $ (36,525 ) $ 0 Unrealized gains (losses) for assets/liabilities still held(6): Included in earnings: Realized investment gains (losses), net $ 0 $ 1,327,927 $ (6,209 ) $ 0 Asset administration fees and other income $ 0 $ 0 $ 0 $ 0 Interest credited to policyholders' account balances $ 0 $ 0 $ 7,017 $ 0 Nine Months Ended September 30, 2017 Fixed Maturities, Available-for-Sale U. S. Government Corporate Securities(1) Structured Securities(2)(3) (in thousands) Fair Value, beginning of period $ 0 $ 102,556 $ 19,856 Total gains (losses) (realized/unrealized): Included in earnings: Realized investment gains (losses), net 0 (670 ) 4,061 Asset administration fees and other income 0 0 0 Included in other comprehensive income (loss) 0 1,613 (3,455 ) Net investment income 0 89 97 Purchases 11,340 13,666 66,174 Sales 0 (52,197 ) (7,471 ) Issuances 0 0 0 Settlements 0 (15,049 ) (46,117 ) Transfers into Level 3(4) 0 5,204 75,143 Transfers out of Level 3(4) 0 (4,691 ) (4,253 ) Other(5) 3,570 (3,582 ) 0 Fair Value, end of period $ 14,910 $ 46,939 $ 104,035 Unrealized gains (losses) for assets still held(6): Included in earnings: Realized investment gains (losses), net $ 0 $ (1,265 ) $ 0 Asset administration fees and other income $ 0 $ 0 $ 0 Nine Months Ended September 30, 2017 Equity Securities(3) Short-term Investments Other Invested Assets(3) Reinsurance Recoverables (in thousands) Fair Value, beginning of period $ 15,845 $ 0 $ 0 $ 5,474,263 Total gains (losses) (realized/unrealized): Included in earnings: Realized investment gains (losses), net(7) 0 0 0 (115,660 ) Asset administration fees and other income 1,339 0 0 0 Included in other comprehensive income (loss) (33 ) 0 0 0 Net investment income 0 0 0 0 Purchases 0 3,319 0 679,236 Sales 0 0 0 0 Issuances 0 0 0 0 Settlements 0 (2,607 ) 0 0 Transfers into Level 3(4) 0 0 8 0 Transfers out of Level 3(4) 0 0 (8 ) 0 Other(5) 11 0 0 (760,102 ) Fair Value, end of period $ 17,162 $ 712 $ 0 $ 5,277,737 Unrealized gains (losses) for assets/liabilities still held(6): Included in earnings: Realized investment gains (losses), net $ 0 $ 0 $ 0 $ (308,066 ) Asset administration fees and other income $ 1,977 $ 0 $ 0 $ 0 Nine Months Ended September 30, 2017 Receivables from parent and affiliates Future Policy Benefits Policyholders' Account Balances Other Liabilities (in thousands) Fair Value, beginning of period $ 6,493 $ (5,041,007 ) $ (20,337 ) $ 0 Total gains (losses) (realized/unrealized): Included in earnings: Realized investment gains (losses), net(7) 0 422,822 (18,345 ) 0 Asset administration fees and other income 0 0 0 0 Interest credited to policyholders' account balances 0 0 18,688 0 Included in other comprehensive income (loss) 0 0 0 0 Net investment income 0 0 0 0 Purchases 0 0 0 0 Sales 0 0 0 0 Issuances 0 (654,141 ) 0 0 Settlements 0 0 (16,531 ) 0 Transfers into Level 3(4) 0 0 0 0 Transfers out of Level 3(4) (6,493 ) 0 0 0 Other 0 0 0 0 Fair Value, end of period $ 0 $ (5,272,326 ) $ (36,525 ) $ 0 Unrealized gains (losses) for assets/liabilities still held(6): Included in earnings: Realized investment gains (losses), net $ 0 $ 311,314 $ (18,345 ) $ 0 Asset administration fees and other income $ 0 $ 0 $ 0 $ 0 Interest credited to policyholders' account balances $ 0 $ 0 $ 18,688 $ 0 (1) Includes U.S. corporate public, U.S. corporate private, foreign corporate public and foreign corporate private securities. Prior period amounts were aggregated to conform to current period presentation. (2) Includes asset-backed, commercial mortgage-backed and residential mortgage-backed securities. Prior period amounts were aggregated to conform to current period presentation. (3) Prior period amounts have been reclassified to conform to current period presentation. See Note 2 for details. (4) Transfers into or out of any level are generally reported at the value as of the beginning of the quarter in which the transfers occur for any such assets still held at the end of the quarter. (5) Other, except for Reinsurance Recoverables, primarily represents reclassifications of certain assets and liabilities between reporting categories. Other for Reinsurance Recoverables for the three and nine months ended September 30, 2017 , represents the Company's recapture of the risks related to the no-lapse guarantees that were previously reinsured to Universal Prudential Arizona Reinsurance Company ("UPARC") and the discontinuation of embedded derivative accounting, effective July 1, 2017. (6) Unrealized gains or losses related to assets still held at the end of the period do not include amortization or accretion of premiums and discounts. (7) Realized investment gains (losses) on future policy benefits and reinsurance recoverables primarily represent the change in the fair value of the Company's living benefit guarantees on certain of its variable annuity contracts.
Fair Value Disclosure Financial Instruments Not Carried at Fair Value	The table below presents the carrying amount and fair value by fair value hierarchy level of certain financial instruments that are not reported at fair value. The financial instruments presented below are reported at carrying value on the Company’s Unaudited Interim Consolidated Statements of Financial Position. In some cases, as described below, the carrying amount equals or approximates fair value. September 30, 2018(1) Fair Value Carrying Amount(2) Level 1 Level 2 Level 3 Total Total (in thousands) Assets: Commercial mortgage and other loans $ 0 $ 0 $ 1,170,760 $ 1,170,760 $ 1,177,395 Policy loans 0 0 1,217,608 1,217,608 1,217,608 Cash and cash equivalents 46,322 205,000 0 251,322 251,322 Accrued investment income 0 87,362 0 87,362 87,362 Receivables from parent and affiliates 0 185,075 0 185,075 185,075 Other assets 0 47,029 0 47,029 47,029 Total assets $ 46,322 $ 524,466 $ 2,388,368 $ 2,959,156 $ 2,965,791 Liabilities: Policyholders’ account balances - investment contracts $ 0 $ 1,194,005 $ 271,720 $ 1,465,725 $ 1,474,604 Cash collateral for loaned securities 0 7,585 0 7,585 7,585 Short-term debt to affiliates 0 1,744 0 1,744 1,744 Payables to parent and affiliates 0 166,136 0 166,136 166,136 Other liabilities 0 377,230 0 377,230 377,230 Total liabilities $ 0 $ 1,746,700 $ 271,720 $ 2,018,420 $ 2,027,299 December 31, 2017(1) Fair Value Carrying Amount(2) Level 1 Level 2 Level 3 Total Total (in thousands) Assets: Commercial mortgage and other loans $ 0 $ 0 $ 1,111,625 $ 1,111,625 $ 1,083,419 Policy loans 0 0 1,161,101 1,161,101 1,161,101 Cash and cash equivalents 36,562 148,000 0 184,562 184,562 Accrued investment income 0 82,341 0 82,341 82,341 Receivables from parent and affiliates 0 167,545 0 167,545 167,545 Other assets 0 50,407 0 50,407 50,407 Total assets $ 36,562 $ 448,293 $ 2,272,726 $ 2,757,581 $ 2,729,375 Liabilities: Policyholders’ account balances - investment contracts $ 0 $ 1,178,583 $ 276,435 $ 1,455,018 $ 1,458,599 Cash collateral for loaned securities 0 33,169 0 33,169 33,169 Short-term debt to affiliates 0 0 0 0 0 Payables to parent and affiliates 0 223,550 0 223,550 223,550 Other liabilities 0 362,592 0 362,592 362,592 Total liabilities $ 0 $ 1,797,894 $ 276,435 $ 2,074,329 $ 2,077,910 (1) The information presented as of December 31, 2017 , excludes certain hedge funds, private equity funds and other funds that were accounted for using the cost method and for which the fair value was measured at NAV per share (or its equivalent) as a practical expedient. The fair value and the carrying value of these cost method investments were $49 million and $41 million , respectively. Due to the adoption of ASU 2016-01 effective January 1, 2018, these assets are carried at fair value at each reporting date with changes in fair value reported in “Other income.” Therefore, as of September 30, 2018 , these assets are excluded from this table but are reported in the fair value recurring measurement table. (2) Carrying values presented herein differ from those in the Company’s Unaudited Interim Consolidated Statements of Financial Position because certain items within the respective financial statement captions are not considered financial instruments or are out of scope under authoritative guidance relating to disclosures of the fair value of financial instruments.

Reinsurance (Tables)

Reinsurance (Tables)	9 Months Ended
	Sep. 30, 2018
Reinsurance Disclosures [Abstract]
Reinsurance Impact on Statements of Financial Position	Reinsurance amounts included in the Company’s Unaudited Interim Consolidated Statements of Financial Position as of September 30, 2018 and December 31, 2017 were as follows: September 30, 2018 December 31, 2017 (in thousands) Reinsurance recoverables(1) $ 31,430,148 $ 32,521,264 Policy loans (129,636 ) (124,843 ) Deferred policy acquisition costs (7,175,536 ) (6,832,729 ) Deferred sales inducements (570,514 ) (638,065 ) Other assets(2) 168,397 205,430 Policyholders’ account balances 4,997,598 5,004,885 Future policy benefits 3,277,715 3,301,841 Other liabilities(1)(3) 628,105 605,155 (1) Prior period amounts in the table above have been revised to correct previously reported numbers. These prior periods revisions have also been reflected in the Unaudited Interim Consolidated Financial Statements. See Note 11 for a more detailed description of the revision. (2) “Other assets” includes $0.1 million of unaffiliated activity as of both September 30, 2018 and December 31, 2017 . (3) “Other liabilities” includes $73 million of unaffiliated activity as of both September 30, 2018 and December 31, 2017 .
Reinsurance Recoverable by Counterparty	The reinsurance recoverables by counterparty are broken out below: September 30, 2018 December 31, 2017 (in thousands) PAR U $ 11,292,102 $ 11,111,272 PALAC 6,351,987 8,388,988 PURC 3,980,335 3,577,962 PARCC 2,503,689 2,546,673 GUL Re 1,975,365 1,772,950 PAR Term 1,700,457 1,559,618 Prudential of Taiwan 1,411,997 1,406,686 Term Re 1,187,127 966,509 Prudential Insurance(1) 922,025 1,118,004 DART 79,061 0 Unaffiliated 26,003 72,602 Total reinsurance recoverables $ 31,430,148 $ 32,521,264 (1) Prior period amounts in the table above have been revised to correct previously reported numbers. These prior periods revisions have also been reflected in the Unaudited Interim Consolidated Financial Statements. See Note 11 for a more detailed description of the revision.
Reinsurance Impact on Statements of Operations and Comprehensive Income (Loss)	Reinsurance amounts, included in the Company’s Unaudited Interim Consolidated Statements of Operations and Comprehensive Income (Loss) for the three and nine months ended September 30, were as follows: Three Months Ended September 30, Nine Months Ended September 30, 2018 2017(8) 2018 2017(8) (in thousands) Premiums: Direct $ 451,790 $ 428,684 $ 1,343,358 $ 1,280,293 Assumed(1) 57 63 175 194 Ceded(2) (437,696 ) (413,623 ) (1,306,564 ) (1,242,529 ) Net premiums 14,151 15,124 36,969 37,958 Policy charges and fee income: Direct 843,551 816,191 2,407,062 2,593,583 Assumed 125,079 127,493 369,483 351,464 Ceded(3) (861,704 ) (814,579 ) (2,371,460 ) (2,804,107 ) Net policy charges and fee income 106,926 129,105 405,085 140,940 Net investment income: Direct 87,260 87,605 249,366 269,999 Assumed 404 376 1,162 1,104 Ceded (1,478 ) (1,459 ) (4,778 ) (3,925 ) Net investment income 86,186 86,522 245,750 267,178 Asset administration fees: Direct 88,721 86,716 262,449 251,709 Assumed 0 0 0 0 Ceded (84,994 ) (82,161 ) (251,705 ) (238,577 ) Net asset administration fees 3,727 4,555 10,744 13,132 Other income: Direct 20,432 16,678 49,778 46,617 Assumed(4) 57 (25 ) (133 ) 184 Ceded (219 ) 19 (46 ) (4 ) Amortization of reinsurance income 1,493 1,348 7,538 1,348 Net other income 21,763 18,020 57,137 48,145 Realized investment gains (losses), net: Direct 1,234,853 1,390,083 3,213,137 442,408 Assumed 0 0 0 0 Ceded(5) (1,284,276 ) (1,665,269 ) (3,348,492 ) (473,583 ) Realized investment gains (losses), net (49,423 ) (275,186 ) (135,355 ) (31,175 ) Policyholders’ benefits (including change in reserves): Direct 636,021 560,252 1,932,194 1,787,338 Assumed(6) 122,727 154,389 381,934 402,025 Ceded(7) (748,925 ) (659,697 ) (2,212,128 ) (2,247,598 ) Net policyholders’ benefits (including change in reserves) 9,823 54,944 102,000 (58,235 ) Interest credited to policyholders’ account balances: Direct 137,309 139,715 383,521 249,063 Assumed 34,414 33,858 105,780 101,687 Ceded (127,014 ) (135,377 ) (361,239 ) (221,827 ) Net interest credited to policyholders’ account balances 44,709 38,196 128,062 128,923 Reinsurance expense allowances and general and administrative expenses, net of capitalization and amortization (420,813 ) (502,172 ) (1,200,005 ) (968,627 ) (1) "Premiums assumed" includes $0.1 million of unaffiliated activity for both the three months ended September 30, 2018 and 2017 , and $0.2 million of unaffiliated activity for both the nine months ended September 30, 2018 and 2017 . (2) "Premiums ceded" includes $(0.1) million and $0 million of unaffiliated activity for both the three and nine months ended September 30, 2018 and 2017 , respectively. (3) "Policy charges and fee income ceded" includes $(8) million and $(4) million of unaffiliated activity for the three months ended September 30, 2018 and 2017 , respectively, and $(14) million and $(5) million for the nine months ended September 30, 2018 and 2017 , respectively. (4) "Other income assumed" includes $(0.1) million and $0 million of unaffiliated activity for the three months ended September 30, 2018 and 2017 , respectively, and $(0.1) million and $0.2 million for the nine months ended September 30, 2018 and 2017 , respectively. (5) “Realized investment gains (losses), net ceded” includes $(33) million and $(49) million of unaffiliated activity for the three months ended September 30, 2018 and 2017 , respectively, and $(81) million and $(26) million for the nine months ended September 30, 2018 and 2017 , respectively. (6) "Policyholders' benefits (including change in reserves) assumed" includes $0.1 million and $0 million of unaffiliated activity for the three months ended September 30, 2018 and 2017 , respectively, and $0 million and $0.4 million for the nine months ended September 30, 2018 and 2017 , respectively. (7) "Policyholders' benefits (including change in reserves) ceded" includes $(4) million and $(1) million of unaffiliated activity for the three months ended September 30, 2018 and 2017 , respectively, and $(8) million and $5 million for the nine months ended September 30, 2018 and 2017 , respectively. (8) Prior period amounts in the table above have been revised to correct previously reported numbers. These prior periods revisions have also been reflected in the Unaudited Interim Consolidated Financial Statements. See Note 11 for a more detailed description of the revision.
Gross and Net Life Insurance in Force	The gross and net amounts of life insurance face amount in force as of September 30, 2018 and 2017 were as follows: 2018 2017 (in thousands) Direct gross life insurance face amount in force $ 922,386,427 $ 868,069,034 Assumed gross life insurance face amount in force 41,088,914 42,061,830 Reinsurance ceded (889,021,800 ) (844,683,670 ) Net life insurance face amount in force $ 74,453,541 $ 65,447,194

Equity (Tables)

Equity (Tables)	9 Months Ended
	Sep. 30, 2018
Equity [Abstract]
Accumulated Other Comprehensive Income (Loss)	The balance of and changes in each component of “Accumulated other comprehensive income (loss)” for the nine months ended September 30, 2018 and 2017 , are as follows: Accumulated Other Comprehensive Income (Loss) Foreign Currency Translation Adjustments Net Unrealized Investment Gains (Losses)(1) Total Accumulated Other Comprehensive Income (Loss) (in thousands) Balance, December 31, 2017 $ (234 ) $ 165,580 $ 165,346 Change in OCI before reclassifications (12,379 ) (254,515 ) (266,894 ) Amounts reclassified from AOCI 0 (5,268 ) (5,268 ) Income tax benefit (expense) 2,599 54,557 57,156 Cumulative effect of adoption of ASU 2016-01 0 (1,539 ) (1,539 ) Cumulative effect of adoption of ASU 2018-02 (50 ) 30,499 30,449 Balance, September 30, 2018 $ (10,064 ) $ (10,686 ) $ (20,750 ) Accumulated Other Comprehensive Income (Loss) Foreign Currency Translation Adjustments Net Unrealized Investment Gains (Losses)(1) Total Accumulated Other Comprehensive Income (Loss) (in thousands) Balance, December 31, 2016 $ (402 ) $ 71,377 $ 70,975 Change in OCI before reclassifications 224 147,980 148,204 Amounts reclassified from AOCI 0 (28,669 ) (28,669 ) Income tax benefit (expense) (78 ) (41,759 ) (41,837 ) Balance, September 30, 2017 $ (256 ) $ 148,929 $ 148,673 (1) Includes cash flow hedges of $(8) million and $(18) million as of September 30, 2018 and December 31, 2017 , respectively, and $1 million and $41 million as of September 30, 2017 and December 31, 2016 , respectively .
Reclassification out of Accumulated Other Comprehensive Income	Reclassifications out of Accumulated Other Comprehensive Income (Loss) Three Months Ended September 30, Nine Months Ended September 30, 2018 2017 2018 2017 (in thousands) Amounts reclassified from AOCI (1)(2): Net unrealized investment gains (losses): Cash flow hedges - Currency/Interest rate(3) $ 2,682 $ (2,962 ) $ 10,443 $ (2,175 ) Net unrealized investment gains (losses) on available-for-sale securities(4) (1,048 ) 31,556 (5,175 ) 30,844 Total net unrealized investment gains (losses) 1,634 28,594 5,268 28,669 Total reclassifications for the period $ 1,634 $ 28,594 $ 5,268 $ 28,669 (1) All amounts are shown before tax. (2) Positive amounts indicate gains/benefits reclassified out of AOCI. Negative amounts indicate losses/costs reclassified out of AOCI. (3) See Note 4 for additional information on cash flow hedges. (4) See table below for additional information on unrealized investment gains (losses), including the impact on deferred policy acquisition costs and other costs, future policy benefits, policyholders’ account balances and other liabilities.
OTTI Net Unrealized Investment Gains (Losses) AOCI Rollforward	The amounts for the periods indicated below, split between amounts related to fixed maturity securities on which an OTTI loss has been recognized, and all other net unrealized investment gains (losses), are as follows: Net Unrealized Investment Gains (Losses) on Fixed Maturity Securities on which an OTTI loss has been recognized Net Unrealized Gains (Losses) on Investments Deferred Policy Acquisition Costs and Other Costs Future Policy Benefits, Policyholders' Account Balances and Other Liabilities Deferred Income Tax (Liability) Benefit Accumulated Other Comprehensive Income (Loss) Related To Net Unrealized Investment Gains (Losses) (in thousands) Balance, December 31, 2017 $ 1,609 $ (99 ) $ 22 $ (682 ) $ 850 Net investment gains (losses) on investments arising during the period (1,614 ) 0 0 339 (1,275 ) Reclassification adjustment for (gains) losses included in net income (175 ) 0 0 37 (138 ) Reclassification adjustment for OTTI (gains) losses excluded from net income(1) (128 ) 0 0 0 (128 ) Impact of net unrealized investment (gains) losses on deferred policy acquisition costs and other costs 0 (183 ) 0 38 (145 ) Impact of net unrealized investment (gains) losses on future policy benefits, policyholders' account balances and other liabilities 0 0 206 (43 ) 163 Balance, September 30, 2018 $ (308 ) $ (282 ) $ 228 $ (311 ) $ (673 ) (1) Represents "transfers in" related to the portion of OTTI losses recognized during the period that were not recognized in earnings for securities with no prior OTTI loss.
All Other Net Unrealized Investment Gains (Losses) in AOCI Rollforward	All Other Net Unrealized Investment Gains (Losses) in AOCI Net Unrealized Gains (Losses) on Investments(1) Deferred Policy Acquisition Costs and Other Costs Future Policy Benefits, Policyholders' Account Balances and Other Liabilities Deferred Income Tax (Liability) Benefit Accumulated Other Comprehensive Income (Loss) Related To Net Unrealized Investment Gains (Losses) (in thousands) Balance, December 31, 2017 $ 272,809 $ 1,832 $ (28,998 ) $ (80,913 ) $ 164,730 Net investment gains (losses) on investments arising during the period (278,583 ) 0 0 58,504 (220,079 ) Reclassification adjustment for (gains) losses included in net income (5,093 ) 0 0 1,070 (4,023 ) Reclassification adjustment for OTTI (gains) losses excluded from net income(2) 128 0 0 0 128 Impact of net unrealized investment (gains) losses on deferred policy acquisition costs and other costs 0 (49,664 ) 0 10,431 (39,233 ) Impact of net unrealized investment (gains) losses on future policy benefits, policyholders' account balances and other liabilities 0 0 75,323 (15,819 ) 59,504 Cumulative effect of adoption of ASU 2016-01 (2,368 ) 0 0 829 (1,539 ) Cumulative effect of adoption of ASU 2018-02 0 0 0 30,499 30,499 Balance, September 30, 2018 $ (13,107 ) $ (47,832 ) $ 46,325 $ 4,601 $ (10,013 ) (1) Includes cash flow hedges. See Note 4 for information on cash flow hedges. (2) Represents "transfers out" related to the portion of OTTI losses recognized during the period that were not recognized in earnings for securities with no prior OTTI loss.

Related Party Transactions (Tab

Related Party Transactions (Tables)	9 Months Ended
	Sep. 30, 2018
Related Party Transactions [Abstract]
Affiliated Notes Receivable	Affiliated notes receivable included in “Receivables from parent and affiliates” at September 30, 2018 and December 31, 2017 were as follows: Maturity Dates Interest Rates September 30, 2018 December 31, 2017 (in thousands) U.S. dollar floating rate notes 2028 3.74% - 3.83 % $ 6,507 $ 6,551 U.S. dollar fixed rate notes 2022 - 2027 0.00% - 14.85 % 120,674 126,020 Total long-term notes receivable - affiliated(1) $ 127,181 $ 132,571 (1) All long-term notes receivable may be called for prepayment prior to the respective maturity dates under specified circumstances.
Affiliated Asset Transfers	The table below shows affiliated asset trades for the nine months ended September 30, 2018 and for the year ended December 31, 2017 . Affiliate Date Transaction Security Type Fair Value Book Value APIC, Net of Tax Increase/(Decrease) Realized Investment Gain (Loss) (in thousands) PALAC January 2017 Purchase Fixed Maturities & Short-Term Investments $ 29 $ 29 $ 0 $ 0 Prudential Insurance June 2017 Sale Fixed Maturities & Short-Term Investments $ 16,965 $ 16,515 $ 293 $ 0 Prudential Insurance June 2017 Sale Commercial Mortgages $ 43,198 $ 42,301 $ 584 $ 0 UPARC September 2017 Transfer In Other Invested Assets $ 37,354 $ 37,354 $ 0 $ 0 GUL Re September 2017 Transfer Out Other Invested Assets $ 72,354 $ 72,354 $ 0 $ 0 GUL Re September 2017 Transfer Out Fixed Maturities & Short-Term Investments $ 1,254,457 $ 1,195,697 $ 0 $ 58,760 Prudential Financial September 2017 Transfer In Fixed Maturities & Short-Term Investments $ 415,271 $ 376,412 $ 25,259 $ 0 Prudential Financial September 2017 Transfer Out Fixed Maturities & Short-Term Investments $ 415,271 $ 376,412 $ 25,259 $ 0 UPARC September 2017 Transfer In Fixed Maturities & Short-Term Investments $ 417,067 $ 385,459 $ 0 $ 31,608 UPARC September 2017 Transfer In Trading Account Assets $ 6,225 $ 5,002 $ 0 $ 1,223 GUL Re September 2017 Transfer Out Trading Account Assets $ 6,225 $ 5,002 $ 0 $ 1,223 UPARC September 2017 Purchase Other Invested Assets - Derivatives $ 20,685 $ 20,685 $ 0 $ 0 UPARC November 2017 Purchase Fixed Maturities & Short-Term Investments $ 41,250 $ 34,332 $ 0 $ 6,919 Prudential Insurance December 2017 Sale Commercial Mortgages $ 106,199 $ 105,191 $ 655 $ 0 DART January 2018 Purchase Other Invested Assets $ 21,457 $ 21,457 $ 0 $ 0 PALAC April 2018 Purchase Fixed Maturities $ 64,313 $ 64,313 $ 0 $ 0 GUL Re May 2018 Purchase Fixed Maturities $ 87,486 $ 87,486 $ 0 $ 0 GUL Re May 2018 Purchase Fixed Maturities $ 37,921 $ 37,921 $ 0 $ 0
Debt Agreements	The following table provides the breakout of the Company's short-term debt to affiliates as of September 30, 2018 and December 31, 2017 . Affiliate Date Issued Amount of Notes - September 30, 2018 Amount of Notes - December 31, 2017 Interest Rate Date of Maturity (in thousands) Prudential Funding, LLC 9/28/2018 $ 1,744 $ 0 0.23 % 10/1/2018 Total Loans Payable to Affiliates $ 1,744 $ 0

Revision to Prior Year Inform_2

Revision to Prior Year Information (Tables)	9 Months Ended
	Sep. 30, 2018
Prior Period Adjustment [Abstract]
Revisions to 2017 Consolidated Financial Statements	The following are selected line items from the consolidated financial statements illustrating the effects of these revisions: Consolidated Statements of Financial Position December 31, 2017 As Previously Reported Revision As Revised (in thousands) ASSETS Reinsurance recoverables $ 32,555,500 $ (34,236 ) $ 32,521,264 TOTAL ASSETS 172,459,576 (34,236 ) 172,425,340 LIABILITIES AND EQUITY LIABILITIES Future policy benefits $ 18,593,130 $ (31,580 ) $ 18,561,550 Income taxes 32,440 3,883 36,323 Other liabilities 1,060,123 (21,151 ) 1,038,972 TOTAL LIABILITIES 169,638,940 (48,848 ) 169,590,092 EQUITY Retained earnings 1,511,698 14,612 1,526,310 TOTAL EQUITY 2,820,636 14,612 2,835,248 TOTAL LIABILITIES AND EQUITY 172,459,576 (34,236 ) 172,425,340 Consolidated Statements of Operations and Comprehensive Income (Loss) Three Months Ended September 30, 2017 Nine Months Ended September 30, 2017 As Previously Reported Revision As Revised As Previously Reported Revision As Revised (in thousands) REVENUES Policy charges and fee income $ 126,709 $ 2,396 $ 129,105 $ 122,186 $ 18,754 $ 140,940 TOTAL REVENUES (24,256 ) 2,396 (21,860 ) 457,424 18,754 476,178 BENEFITS AND EXPENSES Policyholders' benefits 54,637 307 54,944 (77,893 ) 19,658 (58,235 ) TOTAL BENEFITS AND EXPENSES 193,689 307 193,996 315,745 19,658 335,403 INCOME (LOSS) FROM OPERATIONS BEFORE INCOME TAXES AND EQUITY IN EARNINGS OF OPERATING JOINT VENTURE (217,945 ) 2,089 (215,856 ) 141,679 (904 ) 140,775 Income tax expense (benefit) (39,449 ) 789 (38,660 ) (69,061 ) (37 ) (69,098 ) INCOME (LOSS) FROM OPERATIONS BEFORE EQUITY IN EARNINGS OF OPERATING JOINT VENTURE (178,496 ) 1,300 (177,196 ) 210,740 (867 ) 209,873 NET INCOME (LOSS) (178,496 ) 1,300 (177,196 ) 210,740 (867 ) 209,873 COMPREHENSIVE INCOME (LOSS) (184,951 ) 1,300 (183,651 ) 288,438 (867 ) 287,571 Consolidated Statements of Equity Retained Earnings Total Equity As Previously Reported Revision As Revised As Previously Reported Revision As Revised (in thousands) Balance, December 31, 2017 $ 1,511,698 $ 14,612 $ 1,526,310 $ 2,820,636 $ 14,612 $ 2,835,248 Retained Earnings Total Equity As Previously Reported Revision As Revised As Previously Reported Revision As Revised (in thousands) Balance, December 31, 2016 $ 1,437,266 $ 11,251 $ 1,448,517 $ 2,496,803 $ 11,251 $ 2,508,054 Comprehensive income (loss): Net income (loss) 210,740 (867 ) 209,873 210,740 (867 ) 209,873 Total comprehensive income (loss) 288,438 (867 ) 287,571 Balance, September 30, 2017 1,648,006 10,384 1,658,390 2,939,616 10,384 2,950,000 Consolidated Statements of Cash Flows Nine Months Ended September 30, 2017 As Previously Reported Revision As Revised (in thousands) CASH FLOWS FROM (USED IN) OPERATING ACTIVITIES: Net income (loss) $ 210,740 $ (867 ) $ 209,873 Future policy benefits 1,466,123 (10,705 ) 1,455,418 Reinsurance recoverables (1,594,691 ) 30,362 (1,564,329 ) Income taxes 53,508 (36 ) 53,472 Other, net 109,283 (18,754 ) 90,529 Cash flows from (used in) operating activities 85,494 0 85,494

Business and Basis of Present_2

Business and Basis of Presentation (Narrative) (Details)	9 Months Ended
	Sep. 30, 2018subsidiary
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Number of subsidiaries	2

Significant Accounting Polici_4

Significant Accounting Policies and Pronouncements (Changes to the presentation within the Consolidated Statement of Financial Position) (Details) - USD ($) $ in Thousands		Sep. 30, 2018	Jan. 01, 2018	Dec. 31, 2017
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Fixed maturities, available-for-sale		$ 5,234,708		$ 5,223,302
Fixed maturities, trading, at fair value	[1]	36,688		38,793
Equity securities, available for sale, at fair value				0
Equity securities, at fair value	[1]	43,545		40,610
Trading account assets, at fair value				0
Policy loans		1,217,608		1,161,101
Short-term investments		456		1,339
Commercial mortgage and other loans		1,177,395		1,083,419
Other Long-term Investments				0
Other invested assets	[1]	333,382		263,074
Total investments		$ 8,043,782		7,811,638
As previously reported
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Fixed maturities, available-for-sale				5,223,302
Fixed maturities, trading, at fair value				0
Equity securities, available for sale, at fair value				23,122
Equity securities, at fair value				0
Trading account assets, at fair value				56,281
Policy loans				1,161,101
Short-term investments				1,339
Commercial mortgage and other loans				1,083,419
Other Long-term Investments				263,074
Other invested assets				0
Total investments				7,811,638
Reclassification (1) | ASU 2016-01
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Equity securities, available for sale, at fair value				(23,122)
Equity securities, at fair value				23,122
Other invested assets			$ 8,097
Total investments				0
Reclassification (2) | ASU 2016-01
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Fixed maturities, trading, at fair value				38,793
Equity securities, at fair value				17,488
Trading account assets, at fair value				(56,281)
Total investments				0
Reclassification (3) | ASU 2016-01
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Other Long-term Investments				(263,074)
Other invested assets				263,074
Total investments				$ 0
[1]	Prior period amounts have been reclassified to conform to current period presentation. See "Adoption of ASU 2016-01" in Note 2 for details

Significant Accounting Polici_5

Significant Accounting Policies and Pronouncements (Cumulative-effect Adjustment Upon Adoption) (Details) - USD ($) $ in Thousands		Sep. 30, 2018	Jan. 01, 2018	Dec. 31, 2017
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Other invested assets	[1]	$ 333,382		$ 263,074
Total assets		172,561,326		172,425,340
Income taxes payable		0		36,323
Total liabilities		169,862,932		169,590,092
Accumulated other comprehensive income (loss)		(20,750)		165,346
Retained earnings		1,570,052		1,526,310
Total liabilities and equity		$ 172,561,326		172,425,340
Restatement Adjustment
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total assets				(34,236)
Income taxes payable				3,883
Total liabilities				(48,848)
Retained earnings				14,612
Total liabilities and equity				$ (34,236)
ASU 2016-01 | Restatement Adjustment
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Other invested assets			$ 8,097
Total assets			8,097
Income taxes payable			1,700
Total liabilities			1,700
Accumulated other comprehensive income (loss)			(1,539)
Retained earnings			7,936
Total equity			6,397
Total liabilities and equity			$ 8,097
[1]	Prior period amounts have been reclassified to conform to current period presentation. See "Adoption of ASU 2016-01" in Note 2 for details

Significant Accounting Polici_6

Significant Accounting Policies and Pronouncements (Narrative) (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Accumulated other comprehensive income (loss)	$ (20,750)	$ 165,346
ASU 2018-02
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Accumulated other comprehensive income (loss)	30,400
Retained earnings	$ (30,400)

Investments (Fixed Maturities S

Investments (Fixed Maturities Securities Excluding Investments Classified as Trading) (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	$ 5,246,007	$ 4,941,944
Fair Value	5,234,708	5,223,302
Fixed maturities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	5,246,007	4,941,944
Gross Unrealized Gains	107,975	300,200
Gross Unrealized Losses	119,274	18,842
Fair Value	5,234,708	5,223,302
Fixed maturities | U.S. Treasury securities and obligations of U.S. government authorities and agencies
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	70,647	95,851
Gross Unrealized Gains	2,008	3,964
Gross Unrealized Losses	19	0
Fair Value	72,636	99,815
Fixed maturities | Obligations of U.S. states and their political subdivisions
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	610,471	597,254
Gross Unrealized Gains	12,030	38,204
Gross Unrealized Losses	3,893	0
Fair Value	618,608	635,458
Fixed maturities | Foreign government bonds
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	206,359	128,058
Gross Unrealized Gains	2,837	7,536
Gross Unrealized Losses	6,178	496
Fair Value	203,018	135,098
Fixed maturities | Public utilities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	711,477	677,702
Gross Unrealized Gains	23,424	61,588
Gross Unrealized Losses	15,574	1,058
Fair Value	719,327	738,232
Fixed maturities | Redeemable preferred stock
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	4,118	4,053
Gross Unrealized Gains	665	957
Gross Unrealized Losses	20	0
Fair Value	4,763	5,010
Fixed maturities | All other U.S. public corporate securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	1,381,716	1,254,140
Gross Unrealized Gains	39,769	105,524
Gross Unrealized Losses	35,222	2,580
Fair Value	1,386,263	1,357,084
Fixed maturities | All other U.S. private corporate securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	675,995	710,424
Gross Unrealized Gains	4,597	18,306
Gross Unrealized Losses	14,848	1,644
Fair Value	665,744	727,086
Fixed maturities | All other foreign public corporate securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	258,377	168,399
Gross Unrealized Gains	4,486	12,522
Gross Unrealized Losses	8,094	732
Fair Value	254,769	180,189
Fixed maturities | All other foreign private corporate securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	777,245	737,037
Gross Unrealized Gains	13,807	41,405
Gross Unrealized Losses	26,521	9,598
Fair Value	764,531	768,844
Fixed maturities | Asset-backed securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	162,353	179,935
Gross Unrealized Gains	1,885	2,519
Gross Unrealized Losses	223	26
Fair Value	164,015	182,428
Fixed maturities | Commercial mortgage-backed securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	295,265	320,223
Gross Unrealized Gains	1,093	5,148
Gross Unrealized Losses	6,700	2,539
Fair Value	289,658	322,832
Fixed maturities | Residential mortgage-backed securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	91,984	68,868
Gross Unrealized Gains	1,374	2,527
Gross Unrealized Losses	1,982	169
Fair Value	91,376	71,226
OTTI | Fixed maturities
Debt Securities, Available-for-sale [Line Items]
Gross Unrealized Gains	0	2,200
OTTI in AOCI, available-for-sale	(312)	(573)
OTTI | Fixed maturities | U.S. Treasury securities and obligations of U.S. government authorities and agencies
Debt Securities, Available-for-sale [Line Items]
OTTI in AOCI, available-for-sale	0	0
OTTI | Fixed maturities | Obligations of U.S. states and their political subdivisions
Debt Securities, Available-for-sale [Line Items]
OTTI in AOCI, available-for-sale	0	0
OTTI | Fixed maturities | Foreign government bonds
Debt Securities, Available-for-sale [Line Items]
OTTI in AOCI, available-for-sale	0	0
OTTI | Fixed maturities | Public utilities
Debt Securities, Available-for-sale [Line Items]
OTTI in AOCI, available-for-sale	0	0
OTTI | Fixed maturities | Redeemable preferred stock
Debt Securities, Available-for-sale [Line Items]
OTTI in AOCI, available-for-sale	0	0
OTTI | Fixed maturities | All other U.S. public corporate securities
Debt Securities, Available-for-sale [Line Items]
OTTI in AOCI, available-for-sale	0	(215)
OTTI | Fixed maturities | All other U.S. private corporate securities
Debt Securities, Available-for-sale [Line Items]
OTTI in AOCI, available-for-sale	0	0
OTTI | Fixed maturities | All other foreign public corporate securities
Debt Securities, Available-for-sale [Line Items]
OTTI in AOCI, available-for-sale	0	0
OTTI | Fixed maturities | All other foreign private corporate securities
Debt Securities, Available-for-sale [Line Items]
OTTI in AOCI, available-for-sale	0	0
OTTI | Fixed maturities | Asset-backed securities
Debt Securities, Available-for-sale [Line Items]
OTTI in AOCI, available-for-sale	(124)	(138)
OTTI | Fixed maturities | Commercial mortgage-backed securities
Debt Securities, Available-for-sale [Line Items]
OTTI in AOCI, available-for-sale	0	0
OTTI | Fixed maturities | Residential mortgage-backed securities
Debt Securities, Available-for-sale [Line Items]
OTTI in AOCI, available-for-sale	$ (188)	$ (220)

Investments (Fair Value and Los

Investments (Fair Value and Losses by Investment Category and Length of Time in a Loss Position) (Details) - Fixed maturities - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Debt Securities, Available-for-sale [Line Items]
Less than twelve months, Fair Value	$ 2,471,059	$ 297,974
Less than twelve Months, Gross Unrealized Losses	84,054	2,672
Twelve months or more, Fair Value	390,763	419,770
Twelve months or more, Gross Unrealized Losses	35,220	16,170
Total, Fair Value	2,861,822	717,744
Total, Gross Unrealized Losses	119,274	18,842
US Treasury securities and obligations of U.S. government authorities and agencies
Debt Securities, Available-for-sale [Line Items]
Less than twelve months, Fair Value	617	0
Less than twelve Months, Gross Unrealized Losses	19	0
Twelve months or more, Fair Value	0	0
Twelve months or more, Gross Unrealized Losses	0	0
Total, Fair Value	617	0
Total, Gross Unrealized Losses	19	0
Obligations of U.S. states and their political subdivisions
Debt Securities, Available-for-sale [Line Items]
Less than twelve months, Fair Value	219,185	0
Less than twelve Months, Gross Unrealized Losses	3,893	0
Twelve months or more, Fair Value	0	0
Twelve months or more, Gross Unrealized Losses	0	0
Total, Fair Value	219,185	0
Total, Gross Unrealized Losses	3,893	0
Foreign government bonds
Debt Securities, Available-for-sale [Line Items]
Less than twelve months, Fair Value	118,010	16,522
Less than twelve Months, Gross Unrealized Losses	4,515	210
Twelve months or more, Fair Value	20,274	11,959
Twelve months or more, Gross Unrealized Losses	1,663	286
Total, Fair Value	138,284	28,481
Total, Gross Unrealized Losses	6,178	496
Public utilities
Debt Securities, Available-for-sale [Line Items]
Less than twelve months, Fair Value	334,468	26,466
Less than twelve Months, Gross Unrealized Losses	12,808	380
Twelve months or more, Fair Value	29,857	27,354
Twelve months or more, Gross Unrealized Losses	2,766	678
Total, Fair Value	364,325	53,820
Total, Gross Unrealized Losses	15,574	1,058
Redeemable preferred stock
Debt Securities, Available-for-sale [Line Items]
Less than twelve months, Fair Value	1,789	0
Less than twelve Months, Gross Unrealized Losses	20	0
Twelve months or more, Fair Value	0	0
Twelve months or more, Gross Unrealized Losses	0	0
Total, Fair Value	1,789	0
Total, Gross Unrealized Losses	20	0
All other U.S. public corporate securities
Debt Securities, Available-for-sale [Line Items]
Less than twelve months, Fair Value	618,747	36,100
Less than twelve Months, Gross Unrealized Losses	26,700	304
Twelve months or more, Fair Value	106,631	102,490
Twelve months or more, Gross Unrealized Losses	8,522	2,276
Total, Fair Value	725,378	138,590
Total, Gross Unrealized Losses	35,222	2,580
All other U.S. private corporate securities
Debt Securities, Available-for-sale [Line Items]
Less than twelve months, Fair Value	383,595	79,495
Less than twelve Months, Gross Unrealized Losses	10,490	781
Twelve months or more, Fair Value	81,864	36,642
Twelve months or more, Gross Unrealized Losses	4,358	863
Total, Fair Value	465,459	116,137
Total, Gross Unrealized Losses	14,848	1,644
All other foreign public corporate securities
Debt Securities, Available-for-sale [Line Items]
Less than twelve months, Fair Value	169,812	27,078
Less than twelve Months, Gross Unrealized Losses	6,447	190
Twelve months or more, Fair Value	15,813	8,390
Twelve months or more, Gross Unrealized Losses	1,647	542
Total, Fair Value	185,625	35,468
Total, Gross Unrealized Losses	8,094	732
All other foreign private corporate securities
Debt Securities, Available-for-sale [Line Items]
Less than twelve months, Fair Value	378,179	48,109
Less than twelve Months, Gross Unrealized Losses	14,147	472
Twelve months or more, Fair Value	75,531	133,055
Twelve months or more, Gross Unrealized Losses	12,374	9,126
Total, Fair Value	453,710	181,164
Total, Gross Unrealized Losses	26,521	9,598
Asset-backed securities
Debt Securities, Available-for-sale [Line Items]
Less than twelve months, Fair Value	38,396	6,351
Less than twelve Months, Gross Unrealized Losses	136	22
Twelve months or more, Fair Value	4,052	317
Twelve months or more, Gross Unrealized Losses	87	4
Total, Fair Value	42,448	6,668
Total, Gross Unrealized Losses	223	26
Commercial mortgage-backed securities
Debt Securities, Available-for-sale [Line Items]
Less than twelve months, Fair Value	152,005	49,823
Less than twelve Months, Gross Unrealized Losses	3,570	285
Twelve months or more, Fair Value	44,529	93,403
Twelve months or more, Gross Unrealized Losses	3,130	2,254
Total, Fair Value	196,534	143,226
Total, Gross Unrealized Losses	6,700	2,539
Residential mortgage-backed securities
Debt Securities, Available-for-sale [Line Items]
Less than twelve months, Fair Value	56,256	8,030
Less than twelve Months, Gross Unrealized Losses	1,309	28
Twelve months or more, Fair Value	12,212	6,160
Twelve months or more, Gross Unrealized Losses	673	141
Total, Fair Value	68,468	14,190
Total, Gross Unrealized Losses	$ 1,982	$ 169

Investments (Narrative) (Detail

Investments (Narrative) (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017
Investment [Line Items]
Securities sold under agreements to repurchase	$ 0		$ 0		$ 0
Commercial mortgage loans, Percentage	100.00%		100.00%		100.00%
Commercial mortgage and other loans, Acquired	$ 0	$ 0	$ 0	$ 0
Commercial mortgage and other loans, Sold	$ 0	0	$ 0	42,000,000
California
Investment [Line Items]
Commercial mortgage loans, Percentage	22.00%		22.00%
Texas
Investment [Line Items]
Commercial mortgage loans, Percentage	15.00%		15.00%
New York
Investment [Line Items]
Commercial mortgage loans, Percentage	6.00%		6.00%
Europe
Investment [Line Items]
Commercial mortgage loans, Percentage	6.00%		6.00%
Australia
Investment [Line Items]
Commercial mortgage loans, Percentage	4.00%		4.00%
Mexico
Investment [Line Items]
Commercial mortgage loans, Percentage	2.00%		2.00%
Fixed maturities
Investment [Line Items]
Gross unrealized losses	$ 119,274,000		$ 119,274,000		$ 18,842,000
Gross unrealized losses of twelve months or more concentrated in various sectors	35,220,000		35,220,000		16,170,000
Fixed maturities | NAIC high or highest quality rating
Investment [Line Items]
Gross unrealized losses	108,200,000		108,200,000		13,900,000
Fixed maturities | NAIC other than high or highest quality rating
Investment [Line Items]
Gross unrealized losses	11,100,000		11,100,000		4,900,000
Other Income | Equity securities
Investment [Line Items]
Unrealized Gain (Loss) on Investments	(200,000)	$ (200,000)	(2,100,000)	$ 1,300,000
Corporate securities
Investment [Line Items]
Gross unrealized losses of twelve months or more concentrated in various sectors	$ 35,200,000		$ 35,200,000		$ 16,200,000

Investments (Amortized Cost and

Investments (Amortized Cost and Fair Value of Fixed Maturities by Contractual Maturities) (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Amortized Cost
Due in one year or less	$ 107,422
Due after one year through five years	714,425
Due after five years through ten years	1,034,940
Due after ten years	2,839,618
Amortized Cost	5,246,007	$ 4,941,944
Fair Value
Due in one year or less	108,362
Due after one year through five years	706,440
Due after five years through ten years	1,026,399
Due after ten years	2,848,458
Fair Value	5,234,708	$ 5,223,302
Asset-backed securities
Amortized Cost
Debt Maturities, without single maturity date	162,353
Fair Value
Debt Maturities, without Single Maturity Date	164,015
Commercial mortgage-backed securities
Amortized Cost
Debt Maturities, without single maturity date	295,265
Fair Value
Debt Maturities, without Single Maturity Date	289,658
Residential mortgage-backed securities
Amortized Cost
Debt Maturities, without single maturity date	91,984
Fair Value
Debt Maturities, without Single Maturity Date	$ 91,376

Investments (Fixed Maturities_2

Investments (Fixed Maturities Securities Proceeds) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Debt Securities, Available-for-sale [Line Items]
Proceeds from maturities/prepayments			$ 368,906	$ 875,580
Fixed maturities | Available-for-sale
Debt Securities, Available-for-sale [Line Items]
Proceeds from sales	$ 4,478	$ 56,312	138,565	483,151
Proceeds from maturities/prepayments	90,432	125,128	230,550	392,320
Gross investment gains from sales and maturities	394	34,996	508	44,016
Gross investment losses from sales and maturities	(216)	(6,259)	(3,806)	(9,554)
OTTI recognized in earnings	$ (1,226)	$ (143)	(1,877)	(5,668)
Other Noncash Income (Expense)			$ 200	$ (100)

Investments (Credit Losses Reco

Investments (Credit Losses Recognized In Earnings on Fixed Maturity Securities Held by the Company) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Roll Forward]
Balance, beginning of period	$ 1,982	$ 3,724	$ 4,374	$ 5,520
New credit loss impairments	0	0	0	424
Additional credit loss on securities previously impaired	0	0	0	0
Increases due to the passage of time on previously recorded credit losses	463	25	510	88
Reductions for securities which matured, paid down, prepaid or were sold	(15)	(24)	(1,975)	(1,894)
Reductions for securities impaired to fair value during the period	0	0	0	(327)
Accretion of credit loss impairments previously recognized due to an increase in cash flows expected to be collected	(6)	(11)	(485)	(97)
Assets transferred to parent and affiliates	0	0	0	0
Balance, end of period	$ 2,424	$ 3,714	$ 2,424	$ 3,714

Investments (Commercial Mortgag

Investments (Commercial Mortgage and Other Loans) (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Commercial Mortgage and Other Loans [Line Items]
Commercial mortgage and agricultural property loans	$ 1,179,167	$ 1,085,213
% of Total	100.00%	100.00%
Valuation allowance	$ (1,772)	$ (1,794)
Total commercial mortgage and other loans	1,177,395	1,083,419
Apartments and multi-family
Commercial Mortgage and Other Loans [Line Items]
Commercial mortgage and agricultural property loans	$ 363,801	$ 356,694
% of Total	30.80%	32.90%
Hospitality
Commercial Mortgage and Other Loans [Line Items]
Commercial mortgage and agricultural property loans	$ 16,196	$ 16,529
% of Total	1.40%	1.50%
Industrial
Commercial Mortgage and Other Loans [Line Items]
Commercial mortgage and agricultural property loans	$ 254,148	$ 180,619
% of Total	21.50%	16.70%
Office
Commercial Mortgage and Other Loans [Line Items]
Commercial mortgage and agricultural property loans	$ 172,576	$ 159,646
% of Total	14.60%	14.70%
Other
Commercial Mortgage and Other Loans [Line Items]
Commercial mortgage and agricultural property loans	$ 125,652	$ 99,119
% of Total	10.70%	9.10%
Retail
Commercial Mortgage and Other Loans [Line Items]
Commercial mortgage and agricultural property loans	$ 190,568	$ 205,367
% of Total	16.20%	18.90%
Commercial mortgage loans
Commercial Mortgage and Other Loans [Line Items]
Commercial mortgage and agricultural property loans	$ 1,122,941	$ 1,017,974
% of Total	95.20%	93.80%
Agricultural property loans
Commercial Mortgage and Other Loans [Line Items]
Commercial mortgage and agricultural property loans	$ 56,226	$ 67,239
% of Total	4.80%	6.20%

Investments (Allowance for Cred

Investments (Allowance for Credit Losses) (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2018	Dec. 31, 2017
Allowance for Loan and Lease Losses [Roll Forward]
Balance, beginning of year	$ 1,794	$ 1,558
Addition to (release of) allowance for losses	(22)	236
Charge-offs, net of recoveries	0	0
Total ending balance	1,772	1,794
Commercial Mortgage Loans
Allowance for Loan and Lease Losses [Roll Forward]
Balance, beginning of year	1,728	1,513
Addition to (release of) allowance for losses	4	215
Charge-offs, net of recoveries	0	0
Total ending balance	1,732	1,728
Agricultural Property Loans
Allowance for Loan and Lease Losses [Roll Forward]
Balance, beginning of year	66	45
Addition to (release of) allowance for losses	(26)	21
Charge-offs, net of recoveries	0	0
Total ending balance	$ 40	$ 66

Investments (Allowance for Cr_2

Investments (Allowance for Credit Losses and Recorded Investment in Commercial Mortgage and Other Loans) (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017	Dec. 31, 2016
Allowance for credit losses:
Individually evaluated for impairment	$ 0	$ 0
Collectively evaluated for impairment	1,772	1,794
Total ending balance	1,772	1,794	$ 1,558
Recorded investment:
Individually evaluated for impairment	815	3,469
Collectively evaluated for impairment	1,178,352	1,081,744
Total ending balance	1,179,167	1,085,213
Commercial Mortgage Loans
Allowance for credit losses:
Individually evaluated for impairment	0	0
Collectively evaluated for impairment	1,732	1,728
Total ending balance	1,732	1,728	1,513
Recorded investment:
Individually evaluated for impairment	0	2,316
Collectively evaluated for impairment	1,122,941	1,015,658
Total ending balance	1,122,941	1,017,974
Agricultural Property Loans
Allowance for credit losses:
Individually evaluated for impairment	0	0
Collectively evaluated for impairment	40	66
Total ending balance	40	66	$ 45
Recorded investment:
Individually evaluated for impairment	815	1,153
Collectively evaluated for impairment	55,411	66,086
Total ending balance	56,226	67,239
Financial Asset Acquired with Credit Deterioration
Recorded investment:
Financing Receivable Total	$ 0	$ 0

Investments (Credit Quality Ind

Investments (Credit Quality Indicators) (Details) - Commercial Mortgage and Agricultural Loans - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Financing Receivable, Recorded Investment [Line Items]
Recording investment gross of allowance for credit losses	$ 1,179,167	$ 1,085,213
0%-59.99%
Financing Receivable, Recorded Investment [Line Items]
Recording investment gross of allowance for credit losses	678,898	629,260
60%-69.99%
Financing Receivable, Recorded Investment [Line Items]
Recording investment gross of allowance for credit losses	340,757	344,789
70%-79.99%
Financing Receivable, Recorded Investment [Line Items]
Recording investment gross of allowance for credit losses	132,282	110,931
80% and greater
Financing Receivable, Recorded Investment [Line Items]
Recording investment gross of allowance for credit losses	27,230	233
≥ 1.2X
Financing Receivable, Recorded Investment [Line Items]
Recording investment gross of allowance for credit losses	1,112,638	1,024,523
≥ 1.2X | 0%-59.99%
Financing Receivable, Recorded Investment [Line Items]
Recording investment gross of allowance for credit losses	665,897	606,846
≥ 1.2X | 60%-69.99%
Financing Receivable, Recorded Investment [Line Items]
Recording investment gross of allowance for credit losses	320,308	333,185
≥ 1.2X | 70%-79.99%
Financing Receivable, Recorded Investment [Line Items]
Recording investment gross of allowance for credit losses	99,433	84,492
≥ 1.2X | 80% and greater
Financing Receivable, Recorded Investment [Line Items]
Recording investment gross of allowance for credit losses	27,000	0
1.0X to 1.2X
Financing Receivable, Recorded Investment [Line Items]
Recording investment gross of allowance for credit losses	66,529	57,742
1.0X to 1.2X | 0%-59.99%
Financing Receivable, Recorded Investment [Line Items]
Recording investment gross of allowance for credit losses	13,001	21,709
1.0X to 1.2X | 60%-69.99%
Financing Receivable, Recorded Investment [Line Items]
Recording investment gross of allowance for credit losses	20,449	9,594
1.0X to 1.2X | 70%-79.99%
Financing Receivable, Recorded Investment [Line Items]
Recording investment gross of allowance for credit losses	32,849	26,439
1.0X to 1.2X | 80% and greater
Financing Receivable, Recorded Investment [Line Items]
Recording investment gross of allowance for credit losses	230	0
Less than 1.0X
Financing Receivable, Recorded Investment [Line Items]
Recording investment gross of allowance for credit losses	0	2,948
Less than 1.0X | 0%-59.99%
Financing Receivable, Recorded Investment [Line Items]
Recording investment gross of allowance for credit losses	0	705
Less than 1.0X | 60%-69.99%
Financing Receivable, Recorded Investment [Line Items]
Recording investment gross of allowance for credit losses	0	2,010
Less than 1.0X | 70%-79.99%
Financing Receivable, Recorded Investment [Line Items]
Recording investment gross of allowance for credit losses	0	0
Less than 1.0X | 80% and greater
Financing Receivable, Recorded Investment [Line Items]
Recording investment gross of allowance for credit losses	$ 0	$ 233

Investments (Analysis of Past D

Investments (Analysis of Past Due Commercial Mortgage, Agricultural and Other Loans) (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	$ 1,179,167	$ 1,085,213
Total Loans	1,179,167	1,085,213
Non-Accrual Status	0	0
30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	0	0
60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	0	0
90 Days or More Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	0	0
Commercial mortgage loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	1,122,941	1,017,974
Total Loans	1,122,941	1,017,974
Non-Accrual Status	0	0
Commercial mortgage loans | 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	0	0
Commercial mortgage loans | 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	0	0
Commercial mortgage loans | 90 Days or More Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	0	0
Agricultural property loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	56,226	67,239
Total Loans	56,226	67,239
Non-Accrual Status	0	0
Agricultural property loans | 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	0	0
Agricultural property loans | 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	0	0
Agricultural property loans | 90 Days or More Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	0	0
Loans | 90 Days or More Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	$ 0	$ 0

Investments (Other Invested Ass

Investments (Other Invested Assets) (Details) - USD ($) $ in Thousands		Sep. 30, 2018	Dec. 31, 2017
Other Invested Assets [Line Items]
Other invested assets	[1]	$ 333,382	$ 263,074
Total LPS/LLCS
Other Invested Assets [Line Items]
Other invested assets		282,946	225,661
Company’s investment in separate accounts
Other Invested Assets [Line Items]
Other invested assets		42,317	37,404
Derivatives
Other Invested Assets [Line Items]
Other invested assets		8,119	9
Equity Method Investments | Total LPS/LLCS
Other Invested Assets [Line Items]
Other invested assets		214,898	184,063
Equity Method Investments | Private equity | Total LPS/LLCS
Other Invested Assets [Line Items]
Other invested assets		147,660	123,957
Equity Method Investments | Hedge funds | Total LPS/LLCS
Other Invested Assets [Line Items]
Other invested assets		58,329	53,066
Equity Method Investments | Real estate-related | Total LPS/LLCS
Other Invested Assets [Line Items]
Other invested assets		8,909	7,040
Cost-method Investments
Other Invested Assets [Line Items]
Other invested assets			40,900
Fair Value | Total LPS/LLCS
Other Invested Assets [Line Items]
Other invested assets		68,048	41,598
Fair Value | Private equity | Total LPS/LLCS
Other Invested Assets [Line Items]
Other invested assets		59,230	35,686
Fair Value | Hedge funds | Total LPS/LLCS
Other Invested Assets [Line Items]
Other invested assets		774	726
Fair Value | Real estate-related | Total LPS/LLCS
Other Invested Assets [Line Items]
Other invested assets		$ 8,044	$ 5,186
[1]	Prior period amounts have been reclassified to conform to current period presentation. See "Adoption of ASU 2016-01" in Note 2 for details

Investments (Net Investment Inc

Investments (Net Investment Income) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Schedule of Investment Income, Reported Amounts, by Category [Line Items]
Gross investment income	$ 90,813	$ 91,497	$ 259,484	$ 282,316
Less: investment expenses	(4,627)	(4,975)	(13,734)	(15,138)
Net investment income	86,186	86,522	245,750	267,178
Equity securities, at fair value
Schedule of Investment Income, Reported Amounts, by Category [Line Items]
Gross investment income	222	316	664	758
Commercial mortgage and other loans
Schedule of Investment Income, Reported Amounts, by Category [Line Items]
Gross investment income	12,462	13,534	37,170	39,800
Policy loans
Schedule of Investment Income, Reported Amounts, by Category [Line Items]
Gross investment income	16,628	16,110	48,861	47,572
Short-term investments and cash equivalents
Schedule of Investment Income, Reported Amounts, by Category [Line Items]
Gross investment income	952	282	1,389	674
Other invested assets
Schedule of Investment Income, Reported Amounts, by Category [Line Items]
Gross investment income	5,169	1,865	7,027	15,514
Available-for-sale | Fixed maturities
Schedule of Investment Income, Reported Amounts, by Category [Line Items]
Gross investment income	55,109	59,264	163,564	177,512
Trading | Fixed maturities
Schedule of Investment Income, Reported Amounts, by Category [Line Items]
Gross investment income	$ 271	$ 126	$ 809	$ 486

Investments (Realized Investmen

Investments (Realized Investment Gains Losses, Net) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Schedule Of Gain Loss On Investments [Line Items]
Realized investment gains (losses), net	$ (49,423)	$ (275,186)	$ (135,355)	$ (31,175)
Fixed maturities
Schedule Of Gain Loss On Investments [Line Items]
Realized investment gains (losses), net	(1,048)	28,594	(5,175)	28,794
Equity securities
Schedule Of Gain Loss On Investments [Line Items]
Realized investment gains (losses), net	0	0	0	(125)
Commercial mortgage and other loans
Schedule Of Gain Loss On Investments [Line Items]
Realized investment gains (losses), net	16	74	22	(414)
LPS/LLCS
Schedule Of Gain Loss On Investments [Line Items]
Realized investment gains (losses), net	0	5	849	(96)
Derivatives
Schedule Of Gain Loss On Investments [Line Items]
Realized investment gains (losses), net	(48,393)	(303,850)	(131,034)	(59,319)
Short-term investments and cash equivalents
Schedule Of Gain Loss On Investments [Line Items]
Realized investment gains (losses), net	$ 2	$ (9)	$ (17)	$ (15)

Investments (Net Unrealized Gai

Investments (Net Unrealized Gains Losses on Investments by Asset Class) (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Gain (Loss) on Securities [Line Items]
Net Unrealized Gains (Losses) on Investments	$ (13,415)	$ 274,418
Fixed maturities | Available-for-sale | OTTI
Gain (Loss) on Securities [Line Items]
Net Unrealized Gains (Losses) on Investments	(308)	1,609
Fixed maturities | Available-for-sale | All other
Gain (Loss) on Securities [Line Items]
Net Unrealized Gains (Losses) on Investments	(10,991)	279,749
Equity securities | Available-for-sale
Gain (Loss) on Securities [Line Items]
Net Unrealized Gains (Losses) on Investments	0	2,368
Derivatives designated as cash flow hedges
Gain (Loss) on Securities [Line Items]
Net Unrealized Gains (Losses) on Investments	(7,567)	(17,678)
Affiliated notes
Gain (Loss) on Securities [Line Items]
Net Unrealized Gains (Losses) on Investments	408	4,782
Other investments
Gain (Loss) on Securities [Line Items]
Net Unrealized Gains (Losses) on Investments	$ 5,043	$ 3,588

Investments (Repurchase Agreeme

Investments (Repurchase Agreement and Securities Lending) (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Total cash collateral for loaned securities	$ 7,585	$ 33,169
30 days or greater
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Total cash collateral for loaned securities	0	0
Overnight & Continuous
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Total cash collateral for loaned securities	7,585	10,709
Up to 30 Days
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Total cash collateral for loaned securities	0	22,460
US Treasury securities and obligations of U.S. government authorities and agencies
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Total cash collateral for loaned securities	5,131	22,460
US Treasury securities and obligations of U.S. government authorities and agencies | Overnight & Continuous
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Total cash collateral for loaned securities	5,131	0
US Treasury securities and obligations of U.S. government authorities and agencies | Up to 30 Days
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Total cash collateral for loaned securities	0	22,460
Foreign government bonds
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Total cash collateral for loaned securities	0	6,157
Foreign government bonds | Overnight & Continuous
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Total cash collateral for loaned securities	0	6,157
Foreign government bonds | Up to 30 Days
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Total cash collateral for loaned securities	0	0
U.S. corporate public securities
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Total cash collateral for loaned securities	2,454	4,074
U.S. corporate public securities | Overnight & Continuous
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Total cash collateral for loaned securities	2,454	4,074
U.S. corporate public securities | Up to 30 Days
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Total cash collateral for loaned securities	0	0
Foreign corporate public securities
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Total cash collateral for loaned securities	0	478
Foreign corporate public securities | Overnight & Continuous
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Total cash collateral for loaned securities	0	478
Foreign corporate public securities | Up to 30 Days
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Total cash collateral for loaned securities	$ 0	$ 0

Derivative Instruments (Gross N

Derivative Instruments (Gross Notional Amount and Fair Value of Derivatives Contracts) (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Derivative [Line Items]
Notional	$ 2,828,838	$ 2,286,991
Assets	120,217	115,094
Liabilities	(68,355)	(74,378)
Derivatives Designated as Hedge Accounting Instruments:
Derivative [Line Items]
Notional	713,959	649,905
Assets	23,729	18,243
Liabilities	(34,753)	(44,806)
Derivatives Designated as Hedge Accounting Instruments: | Foreign Currency Swaps
Derivative [Line Items]
Notional	713,959	649,905
Assets	23,729	18,243
Liabilities	(34,753)	(44,806)
Derivatives Not Qualifying as Hedge Accounting Instruments:
Derivative [Line Items]
Notional	2,114,879	1,637,086
Assets	96,488	96,851
Liabilities	(33,602)	(29,572)
Derivatives Not Qualifying as Hedge Accounting Instruments: | Interest Rate Swaps
Derivative [Line Items]
Notional	246,925	246,925
Assets	11,301	23,032
Liabilities	(6,463)	0
Derivatives Not Qualifying as Hedge Accounting Instruments: | Foreign Currency Forwards
Derivative [Line Items]
Notional	21,456	16,320
Assets	189	0
Liabilities	(13)	(376)
Derivatives Not Qualifying as Hedge Accounting Instruments: | Credit Default Swaps
Derivative [Line Items]
Notional	756	1,594
Assets	0	0
Liabilities	(18)	(96)
Derivatives Not Qualifying as Hedge Accounting Instruments: | Foreign Currency Swaps
Derivative [Line Items]
Notional	87,548	95,145
Assets	4,288	4,347
Liabilities	(4,836)	(5,600)
Derivatives Not Qualifying as Hedge Accounting Instruments: | Equity Options
Derivative [Line Items]
Notional	1,758,194	1,277,102
Assets	80,710	69,472
Liabilities	$ (22,272)	$ (23,500)

Derivative Instruments (Offsett

Derivative Instruments (Offsetting Assets and Liabilities) (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Derivatives Assets
Gross Amounts of Recognized Financial Instruments	$ 120,214	$ 115,086
Gross Amounts Offset in the Consolidated Statement of Financial Position	(112,098)	(115,086)
Net Amounts Presented in the Consolidated Statement of Financial Position	8,116	0
Financial Instruments/Collateral	(5,961)	0
Net Amount	2,155	0
Securities Purchased under Agreements to Resell
Gross Amounts of Recognized Financial Instruments	205,000	148,000
Gross Amounts Offset in the Consolidated Statement of Financial Position	0	0
Net Amounts Presented in the Consolidated Statement of Financial Position	205,000	148,000
Financial Instruments/Collateral	(205,000)	(148,000)
Net Amount	0	0
Total Assets
Gross Amounts of Recognized Financial Instruments	325,214	263,086
Gross Amounts Offset in the Consolidated Statement of Financial Position	(112,098)	(115,086)
Net Amounts Presented in the Consolidated Statement of Financial Position	213,116	148,000
Financial Instruments/Collateral	(210,961)	(148,000)
Net Amount	2,155	0
Derivatives Liabilities
Gross Amounts of Recognized Financial Instruments	68,355	74,378
Gross Amounts Offset in the Consolidated Statement of Financial Position	(68,355)	(69,718)
Net Amounts Presented in the Consolidated Statement of Financial Position	0	4,660
Financial Instruments/Collateral	0	(245)
Net Amount	0	4,415
Securities Sold under Agreements to Repurchase
Gross Amounts of Recognized Financial Instruments	0	0
Gross Amounts Offset in the Consolidated Statement of Financial Position	0	0
Net Amounts Presented in the Consolidated Statement of Financial Position	0	0
Financial Instruments/Collateral	0	0
Net Amount	0	0
Total Liabilities
Gross Amounts of Recognized Financial Instruments	68,355	74,378
Gross Amounts Offset in the Consolidated Statement of Financial Position	(68,355)	(69,718)
Net Amounts Presented in the Consolidated Statement of Financial Position	0	4,660
Financial Instruments/Collateral	0	(245)
Net Amount	$ 0	$ 4,415

Derivative Instruments (Financi

Derivative Instruments (Financial Statement Classification and Impact of Derivatives Used in Qualifying and Non-qualifying Hedge Relationships) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Realized Investment Gains (Losses)
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, gain (loss) on derivatives, net	$ (48,393)	$ (303,850)	$ (131,034)	$ (59,319)
Net Investment Income
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, gain (loss) on derivatives, net	1,767	1,705	4,916	4,473
Other Income
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, gain (loss) on derivatives, net	1,890	(3,041)	6,950	(7,856)
AOCI
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, gain (loss) on derivatives, net	1,454	(17,210)	10,111	(39,924)
Derivatives Designated as Hedge Accounting Instruments: | Cash flow hedges | Realized Investment Gains (Losses)
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, gain (loss) on derivatives, net	0	0	0	0
Derivatives Designated as Hedge Accounting Instruments: | Cash flow hedges | Net Investment Income
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, gain (loss) on derivatives, net	1,767	1,705	4,916	4,473
Derivatives Designated as Hedge Accounting Instruments: | Cash flow hedges | Other Income
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, gain (loss) on derivatives, net	1,872	(3,013)	6,917	(7,805)
Derivatives Designated as Hedge Accounting Instruments: | Cash flow hedges | AOCI
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, gain (loss) on derivatives, net	1,454	(17,210)	10,111	(39,924)
Derivatives Designated as Hedge Accounting Instruments: | Cash flow hedges | Currency/Interest Rate | Realized Investment Gains (Losses)
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, gain (loss) on derivatives, net	0	0	0	0
Derivatives Designated as Hedge Accounting Instruments: | Cash flow hedges | Currency/Interest Rate | Net Investment Income
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, gain (loss) on derivatives, net	1,767	1,705	4,916	4,473
Derivatives Designated as Hedge Accounting Instruments: | Cash flow hedges | Currency/Interest Rate | Other Income
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, gain (loss) on derivatives, net	1,872	(3,013)	6,917	(7,805)
Derivatives Designated as Hedge Accounting Instruments: | Cash flow hedges | Currency/Interest Rate | AOCI
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, gain (loss) on derivatives, net	1,454	(17,210)	10,111	(39,924)
Derivatives Not Qualifying as Hedge Accounting Instruments: | Realized Investment Gains (Losses)
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, gain (loss) on derivatives, net	(48,393)	(303,850)	(131,034)	(59,319)
Derivatives Not Qualifying as Hedge Accounting Instruments: | Net Investment Income
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, gain (loss) on derivatives, net	0	0	0	0
Derivatives Not Qualifying as Hedge Accounting Instruments: | Other Income
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, gain (loss) on derivatives, net	18	(28)	33	(51)
Derivatives Not Qualifying as Hedge Accounting Instruments: | AOCI
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, gain (loss) on derivatives, net	0	0	0	0
Derivatives Not Qualifying as Hedge Accounting Instruments: | Interest Rate | Realized Investment Gains (Losses)
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, gain (loss) on derivatives, net	(4,543)	(2,160)	(17,068)	(528)
Derivatives Not Qualifying as Hedge Accounting Instruments: | Interest Rate | Net Investment Income
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, gain (loss) on derivatives, net	0	0	0	0
Derivatives Not Qualifying as Hedge Accounting Instruments: | Interest Rate | Other Income
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, gain (loss) on derivatives, net	0	0	0	0
Derivatives Not Qualifying as Hedge Accounting Instruments: | Interest Rate | AOCI
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, gain (loss) on derivatives, net	0	0	0	0
Derivatives Not Qualifying as Hedge Accounting Instruments: | Currency | Realized Investment Gains (Losses)
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, gain (loss) on derivatives, net	230	(537)	895	(1,245)
Derivatives Not Qualifying as Hedge Accounting Instruments: | Currency | Net Investment Income
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, gain (loss) on derivatives, net	0	0	0	0
Derivatives Not Qualifying as Hedge Accounting Instruments: | Currency | Other Income
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, gain (loss) on derivatives, net	0	0	0	0
Derivatives Not Qualifying as Hedge Accounting Instruments: | Currency | AOCI
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, gain (loss) on derivatives, net	0	0	0	0
Derivatives Not Qualifying as Hedge Accounting Instruments: | Currency/Interest Rate | Realized Investment Gains (Losses)
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, gain (loss) on derivatives, net	(693)	(5,665)	383	(4,607)
Derivatives Not Qualifying as Hedge Accounting Instruments: | Currency/Interest Rate | Net Investment Income
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, gain (loss) on derivatives, net	0	0	0	0
Derivatives Not Qualifying as Hedge Accounting Instruments: | Currency/Interest Rate | Other Income
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, gain (loss) on derivatives, net	18	(28)	33	(51)
Derivatives Not Qualifying as Hedge Accounting Instruments: | Currency/Interest Rate | AOCI
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, gain (loss) on derivatives, net	0	0	0	0
Derivatives Not Qualifying as Hedge Accounting Instruments: | Credit | Realized Investment Gains (Losses)
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, gain (loss) on derivatives, net	0	(7)	(2)	(44)
Derivatives Not Qualifying as Hedge Accounting Instruments: | Credit | Net Investment Income
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, gain (loss) on derivatives, net	0	0	0	0
Derivatives Not Qualifying as Hedge Accounting Instruments: | Credit | Other Income
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, gain (loss) on derivatives, net	0	0	0	0
Derivatives Not Qualifying as Hedge Accounting Instruments: | Credit | AOCI
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, gain (loss) on derivatives, net	0	0	0	0
Derivatives Not Qualifying as Hedge Accounting Instruments: | Equity | Realized Investment Gains (Losses)
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, gain (loss) on derivatives, net	20,901	7,574	23,725	18,016
Derivatives Not Qualifying as Hedge Accounting Instruments: | Equity | Net Investment Income
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, gain (loss) on derivatives, net	0	0	0	0
Derivatives Not Qualifying as Hedge Accounting Instruments: | Equity | Other Income
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, gain (loss) on derivatives, net	0	0	0	0
Derivatives Not Qualifying as Hedge Accounting Instruments: | Equity | AOCI
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, gain (loss) on derivatives, net	0	0	0	0
Derivatives Not Qualifying as Hedge Accounting Instruments: | Embedded Derivatives | Realized Investment Gains (Losses)
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, gain (loss) on derivatives, net	(64,288)	(303,055)	(138,967)	(70,911)
Derivatives Not Qualifying as Hedge Accounting Instruments: | Embedded Derivatives | Net Investment Income
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, gain (loss) on derivatives, net	0	0	0	0
Derivatives Not Qualifying as Hedge Accounting Instruments: | Embedded Derivatives | Other Income
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, gain (loss) on derivatives, net	0	0	0	0
Derivatives Not Qualifying as Hedge Accounting Instruments: | Embedded Derivatives | AOCI
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, gain (loss) on derivatives, net	$ 0	$ 0	$ 0	$ 0

Derivative Instruments (Current

Derivative Instruments (Current Period Cash Flow Hedges in AOCI (loss) before Taxes) (Details) - Cash flow hedgers in AOCI $ in Thousands	9 Months Ended
	Sep. 30, 2018USD ($)
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Balance, beginning	$ (17,678)
Net deferred gains/(losses) on cash flow hedges from January 1 to September 30, 2018	20,554
Amounts reclassified into current period earnings	(10,443)
Balance, ending	$ (7,567)

Derivative Instruments (Narrati

Derivative Instruments (Narrative) (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2018	Dec. 31, 2017
Derivative [Line Items]
Cash Flow Hedge Gain (Loss) to be Reclassified within Twelve Months	$ 6
Credit Protection Purchased Notional Amounts	1	$ 2
Credit Derivative Protection Purchased Fair Value Asset (Liability)	0	(0.1)
Future Policy Benefits
Derivative [Line Items]
Embedded Derivative, Fair Value of Embedded Derivative Asset (Liability), Net	(2,908)	(5,453)
Reinsurance Recoverables
Derivative [Line Items]
Embedded Derivative, Fair Value of Embedded Derivative Asset (Liability), Net	2,917	5,458
Reinsurance Recoverables | PALAC and Prudential Insurance
Derivative [Line Items]
Embedded Derivative, Fair Value of Embedded Derivative Asset (Liability), Net	2,958	5,445
Reinsurance Recoverables | Union Hamilton Reinsurance, Ltd.
Derivative [Line Items]
Embedded Derivative, Fair Value of Embedded Derivative Asset (Liability), Net	(41)	13
Policyholders' account balances
Derivative [Line Items]
Embedded Derivative, Fair Value of Embedded Derivative Asset (Liability), Net	$ (61)	$ (47)

Fair Value of Assets and Liab_3

Fair Value of Assets and Liabilities (Balances of Assets and Liabilities Measured at Fair Value on a Recurring Basis) (Details) - USD ($) $ in Thousands		Sep. 30, 2018	Dec. 31, 2017
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fixed maturities, available-for-sale		$ 5,234,708	$ 5,223,302
Fixed maturities, trading, at fair value	[1]	36,688	38,793
Equity securities	[1]	43,545	40,610
Other invested assets	[1]	333,382	263,074
Reinsurance recoverables		31,430,148	32,521,264
Receivables from parent and affiliates		312,256	300,116
Separate account assets		130,506,948	129,655,734
TOTAL ASSETS		172,561,326	172,425,340
Future policy benefits		16,498,119	18,561,550
Payables to parent and affiliates		166,136	228,210
Other liabilities		1,084,739	1,038,972
TOTAL LIABILITIES		169,862,932	169,590,092
Future Policy Benefits
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Embedded Derivative, Fair Value of Embedded Derivative, Net Liability		2,908,000	5,453,000
Embedded Derivative, Fair Value of Embedded Derivative Gross Asset		1,097,000	823,000
Embedded Derivative, Fair Value of Embedded Derivative Gross Liability		4,005,000	6,276,000
Fair Value, Measurements, Recurring
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fixed maturities, available-for-sale		5,234,708	5,223,302
Fixed maturities, trading, at fair value		36,688	38,793
Equity securities		43,545	40,610
Short-term investments		456	1,339
Cash equivalents		3,934	28,007
Other invested assets		8,119	8
Reinsurance recoverables		2,958,093	5,457,649
Receivables from parent and affiliates		127,181	132,571
Subtotal excluding separate account assets		8,412,724	10,922,279
Separate account assets		126,230,592	125,543,035
TOTAL ASSETS		134,643,316	136,465,314
Future policy benefits		2,908,324	5,452,583
Policyholders’ account balances		60,847	46,651
Payables to parent and affiliates		0	4,660
Other liabilities		41,333	0
TOTAL LIABILITIES		3,010,504	5,503,894
Asset Netting		(112,098)	(115,086)
Liability Netting		(68,355)	(69,718)
Netting		43,700	45,400
Fair Value, Measurements, Recurring | Other invested assets
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Asset Netting		(112,098)	(115,086)
Fair Value, Measurements, Recurring | Payables to parent and affiliates
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Liability Netting		(68,355)	(69,718)
Fair Value, Measurements, Recurring | U.S. Treasury securities and obligations of U.S. government authorities and agencies
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fixed maturities, available-for-sale		72,636	99,815
Fair Value, Measurements, Recurring | Obligations of U.S. states and their political subdivisions
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fixed maturities, available-for-sale		618,608	635,458
Fair Value, Measurements, Recurring | Foreign government bonds
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fixed maturities, available-for-sale		203,018	135,098
Fair Value, Measurements, Recurring | U.S. corporate public securities
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fixed maturities, available-for-sale		1,804,734	1,781,089
Fair Value, Measurements, Recurring | U.S. corporate private securities
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fixed maturities, available-for-sale		890,056	961,238
Fair Value, Measurements, Recurring | Foreign corporate public securities
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fixed maturities, available-for-sale		256,938	182,452
Fair Value, Measurements, Recurring | Foreign corporate private securities
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fixed maturities, available-for-sale		843,669	851,666
Fair Value, Measurements, Recurring | Asset-backed securities
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fixed maturities, available-for-sale		164,015	182,428
Fair Value, Measurements, Recurring | Commercial mortgage-backed securities
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fixed maturities, available-for-sale		289,658	322,832
Fair Value, Measurements, Recurring | Residential mortgage-backed securities
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fixed maturities, available-for-sale		91,376	71,226
Fair Value, Measurements, Recurring | Level 1
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fixed maturities, available-for-sale		0	0
Fixed maturities, trading, at fair value		0	0
Equity securities		124	94
Short-term investments		0	0
Cash equivalents		0	0
Other invested assets		0	0
Reinsurance recoverables		0	0
Receivables from parent and affiliates		0	0
Subtotal excluding separate account assets		124	94
Separate account assets		0	0
TOTAL ASSETS		124	94
Future policy benefits		0	0
Policyholders’ account balances		0	0
Payables to parent and affiliates		0	0
Other liabilities		0	0
TOTAL LIABILITIES		0	0
Fair Value, Measurements, Recurring | Level 1 | U.S. Treasury securities and obligations of U.S. government authorities and agencies
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fixed maturities, available-for-sale		0	0
Fair Value, Measurements, Recurring | Level 1 | Obligations of U.S. states and their political subdivisions
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fixed maturities, available-for-sale		0	0
Fair Value, Measurements, Recurring | Level 1 | Foreign government bonds
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fixed maturities, available-for-sale		0	0
Fair Value, Measurements, Recurring | Level 1 | U.S. corporate public securities
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fixed maturities, available-for-sale		0	0
Fair Value, Measurements, Recurring | Level 1 | U.S. corporate private securities
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fixed maturities, available-for-sale		0	0
Fair Value, Measurements, Recurring | Level 1 | Foreign corporate public securities
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fixed maturities, available-for-sale		0	0
Fair Value, Measurements, Recurring | Level 1 | Foreign corporate private securities
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fixed maturities, available-for-sale		0	0
Fair Value, Measurements, Recurring | Level 1 | Asset-backed securities
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fixed maturities, available-for-sale		0	0
Fair Value, Measurements, Recurring | Level 1 | Commercial mortgage-backed securities
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fixed maturities, available-for-sale		0	0
Fair Value, Measurements, Recurring | Level 1 | Residential mortgage-backed securities
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fixed maturities, available-for-sale		0	0
Fair Value, Measurements, Recurring | Level 2
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fixed maturities, available-for-sale		5,139,056	5,017,475
Fixed maturities, trading, at fair value		36,688	38,793
Equity securities		27,094	22,991
Short-term investments		0	0
Cash equivalents		3,934	28,007
Other invested assets		120,217	115,094
Reinsurance recoverables		0	0
Receivables from parent and affiliates		127,181	132,571
Subtotal excluding separate account assets		5,454,170	5,354,931
Separate account assets		126,230,592	125,543,035
TOTAL ASSETS		131,684,762	130,897,966
Future policy benefits		0	0
Policyholders’ account balances		0	0
Payables to parent and affiliates		68,355	74,378
Other liabilities		0	0
TOTAL LIABILITIES		68,355	74,378
Fair Value, Measurements, Recurring | Level 2 | U.S. Treasury securities and obligations of U.S. government authorities and agencies
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fixed maturities, available-for-sale		47,290	80,611
Fair Value, Measurements, Recurring | Level 2 | Obligations of U.S. states and their political subdivisions
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fixed maturities, available-for-sale		618,608	635,458
Fair Value, Measurements, Recurring | Level 2 | Foreign government bonds
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fixed maturities, available-for-sale		202,859	134,924
Fair Value, Measurements, Recurring | Level 2 | U.S. corporate public securities
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fixed maturities, available-for-sale		1,804,099	1,779,935
Fair Value, Measurements, Recurring | Level 2 | U.S. corporate private securities
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fixed maturities, available-for-sale		859,118	901,080
Fair Value, Measurements, Recurring | Level 2 | Foreign corporate public securities
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fixed maturities, available-for-sale		256,733	182,243
Fair Value, Measurements, Recurring | Level 2 | Foreign corporate private securities
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fixed maturities, available-for-sale		831,980	837,766
Fair Value, Measurements, Recurring | Level 2 | Asset-backed securities
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fixed maturities, available-for-sale		157,383	71,400
Fair Value, Measurements, Recurring | Level 2 | Commercial mortgage-backed securities
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fixed maturities, available-for-sale		269,610	322,832
Fair Value, Measurements, Recurring | Level 2 | Residential mortgage-backed securities
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fixed maturities, available-for-sale		91,376	71,226
Fair Value, Measurements, Recurring | Level 3
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fixed maturities, available-for-sale		95,652	205,827
Fixed maturities, trading, at fair value		0	0
Equity securities		16,327	17,525
Short-term investments		456	1,339
Cash equivalents		0	0
Other invested assets		0	0
Reinsurance recoverables		2,958,093	5,457,649
Receivables from parent and affiliates		0	0
Subtotal excluding separate account assets		3,070,528	5,682,340
Separate account assets		0	0
TOTAL ASSETS		3,070,528	5,682,340
Future policy benefits		2,908,324	5,452,583
Policyholders’ account balances		60,847	46,651
Payables to parent and affiliates		0	0
Other liabilities		41,333	0
TOTAL LIABILITIES		3,010,504	5,499,234
Fair Value, Measurements, Recurring | Level 3 | U.S. Treasury securities and obligations of U.S. government authorities and agencies
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fixed maturities, available-for-sale		25,346	19,204
Fair Value, Measurements, Recurring | Level 3 | Obligations of U.S. states and their political subdivisions
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fixed maturities, available-for-sale		0	0
Fair Value, Measurements, Recurring | Level 3 | Foreign government bonds
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fixed maturities, available-for-sale		159	174
Fair Value, Measurements, Recurring | Level 3 | U.S. corporate public securities
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fixed maturities, available-for-sale		635	1,154
Fair Value, Measurements, Recurring | Level 3 | U.S. corporate private securities
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fixed maturities, available-for-sale		30,938	60,158
Fair Value, Measurements, Recurring | Level 3 | Foreign corporate public securities
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fixed maturities, available-for-sale		205	209
Fair Value, Measurements, Recurring | Level 3 | Foreign corporate private securities
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fixed maturities, available-for-sale		11,689	13,900
Fair Value, Measurements, Recurring | Level 3 | Asset-backed securities
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fixed maturities, available-for-sale		6,632	111,028
Fair Value, Measurements, Recurring | Level 3 | Commercial mortgage-backed securities
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fixed maturities, available-for-sale		20,048	0
Fair Value, Measurements, Recurring | Level 3 | Residential mortgage-backed securities
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fixed maturities, available-for-sale		0	0
Other invested assets
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value investment measured at NAV per share		68,000	700
Separate Account Assets
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value investment measured at NAV per share		$ 4,276,000	$ 4,113,000
[1]	Prior period amounts have been reclassified to conform to current period presentation. See "Adoption of ASU 2016-01" in Note 2 for details

Fair Value of Assets and Liab_4

Fair Value of Assets and Liabilities (Narrative) (Details) - USD ($)	3 Months Ended	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017
Fair Value Disclosures [Abstract]
Transfers Between Level 1 and Level 2	$ 0	$ 0
Available-for-sale | Collateralized Loan Obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Transfers out of Level 3	$ 81,000,000

Fair Value of Assets and Liab_5

Fair Value of Assets and Liabilities (Quantitative Info for Level 3 Inputs) (Details) - USD ($) $ in Thousands		9 Months Ended	12 Months Ended
		Sep. 30, 2018	Dec. 31, 2017
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Corporate securities	[1]	$ 36,688	$ 38,793
Future policy benefits		16,498,119	18,561,550
Fair Value, Measurements, Recurring
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Corporate securities		36,688	38,793
Future policy benefits		$ 2,908,324	5,452,583
Level 3 | Minimum
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Fair Value Inputs, Policyholder Age		50 years
Level 3 | Minimum | Future Policy Benefits
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Mortality rate		0.00%
Level 3 | Maximum
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Fair Value Inputs, Policyholder Age		90 years
Level 3 | Fair Value, Measurements, Recurring
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Corporate securities		$ 0	0
Future policy benefits		$ 2,908,324	$ 5,452,583
Level 3 | Internal | Minimum | Discounted cash flow | Future Policy Benefits
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Lapse rate		1.00%	1.00%
Spread over LIBOR		0.16%	0.12%
Utilization rate		50.00%	52.00%
Withdrawal rate (greater than maximum range)		78.00%	78.00%
Mortality rate		0.00%	0.00%
Equity volatility curve		14.00%	13.00%
Level 3 | Internal | Minimum | Discounted cash flow | Corporate securities
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Discount Rate		7.00%	5.06%
Level 3 | Internal | Minimum | Liquidation | Corporate securities
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Liquidation value		6.00%	25.00%
Level 3 | Internal | Maximum | Discounted cash flow | Future Policy Benefits
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Lapse rate		13.00%	12.00%
Spread over LIBOR		1.21%	1.10%
Utilization rate		97.00%	97.00%
Withdrawal rate (greater than maximum range)		100.00%	100.00%
Mortality rate		15.00%	14.00%
Equity volatility curve		22.00%	24.00%
Level 3 | Internal | Maximum | Discounted cash flow | Corporate securities
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Discount Rate		20.00%	22.23%
Level 3 | Internal | Maximum | Liquidation | Corporate securities
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Liquidation value		54.00%	25.00%
Level 3 | Internal | Weighted Average | Discounted cash flow | Corporate securities
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Discount Rate		9.96%	7.33%
Level 3 | Internal | Weighted Average | Liquidation | Corporate securities
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Liquidation value		51.00%	25.00%
Level 3 | Internal | Fair Value, Measurements, Recurring | Future Policy Benefits
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Future policy benefits		$ 2,908,324	$ 5,452,583
Level 3 | Internal | Fair Value, Measurements, Recurring | Corporate securities
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Corporate securities		20,938	36,966
Level 3 | Internal | Fair Value, Measurements, Recurring | Reinsurance Recoverables
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Reinsurance recoverables		$ 2,958,093	$ 5,457,649
[1]	Prior period amounts have been reclassified to conform to current period presentation. See "Adoption of ASU 2016-01" in Note 2 for details

Fair Value of Assets and Liab_6

Fair Value of Assets and Liabilities (Changes in Level 3 Assets and Liabilities) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Equity securities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair Value, beginning of period	$ 16,625	$ 17,350	$ 17,525	$ 15,845
Total gains (losses) (realized/unrealized):
Included in other comprehensive income (loss)	0	(1)	0	(33)
Net investment income	0	0	0	0
Purchases	0	0	0	0
Sales	(75)	0	(75)	0
Issuances	0	0	0	0
Settlements	0	0	0	0
Transfers into Level 3	0	0	0	0
Transfers out of Level 3	0	0	0	0
Other	0	11	0	11
Fair Value, end of period	16,327	17,162	16,327	17,162
Equity securities | Realized investment gains (losses), net
Total gains (losses) (realized/unrealized):
Included in earnings	0	0	0	0
Net unrealized investment gains (losses):
Included in earnings	0	0	0	0
Equity securities | Asset management fees and other income
Total gains (losses) (realized/unrealized):
Included in earnings	(223)	(198)	(1,123)	1,339
Net unrealized investment gains (losses):
Included in earnings	(222)	(198)	(1,123)	1,977
Short-term Investments
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair Value, beginning of period	333	0	1,339	0
Total gains (losses) (realized/unrealized):
Included in other comprehensive income (loss)	0	0	0	0
Net investment income	0	0	0	0
Purchases	5,440	3,319	10,710	3,319
Sales	0	0	0	0
Issuances	0	0	0	0
Settlements	(5,316)	(2,607)	(11,560)	(2,607)
Transfers into Level 3	0	0	0	0
Transfers out of Level 3	0	0	0	0
Other	(1)	0	(15)	0
Fair Value, end of period	456	712	456	712
Short-term Investments | Realized investment gains (losses), net
Total gains (losses) (realized/unrealized):
Included in earnings	0	0	(18)	0
Net unrealized investment gains (losses):
Included in earnings	(1)	0	(19)	0
Short-term Investments | Asset management fees and other income
Total gains (losses) (realized/unrealized):
Included in earnings	0	0	0	0
Net unrealized investment gains (losses):
Included in earnings	0	0	0	0
Cash equivalents
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair Value, beginning of period	564		0
Total gains (losses) (realized/unrealized):
Included in other comprehensive income (loss)	0		0
Net investment income	0		0
Purchases	0		2,550
Sales	0		0
Issuances	0		0
Settlements	(564)		(2,550)
Transfers into Level 3	0		0
Transfers out of Level 3	0		0
Other	0		0
Fair Value, end of period	0		0
Cash equivalents | Realized investment gains (losses), net
Total gains (losses) (realized/unrealized):
Included in earnings	0		0
Net unrealized investment gains (losses):
Included in earnings	0		0
Cash equivalents | Asset management fees and other income
Total gains (losses) (realized/unrealized):
Included in earnings	0		0
Net unrealized investment gains (losses):
Included in earnings	0		0
Other invested assets
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair Value, beginning of period	5	0	0	0
Total gains (losses) (realized/unrealized):
Included in other comprehensive income (loss)	0	0	0	0
Net investment income	0	0	0	0
Purchases	0	0	0	0
Sales	0	0	0	0
Issuances	0	0	0	0
Settlements	0	0	0	0
Transfers into Level 3	0	0	9	8
Transfers out of Level 3	(9)	0	(9)	(8)
Other	0	0	0	0
Fair Value, end of period	0	0	0	0
Other invested assets | Realized investment gains (losses), net
Total gains (losses) (realized/unrealized):
Included in earnings	4	0	0	0
Net unrealized investment gains (losses):
Included in earnings	4	0	0	0
Other invested assets | Asset management fees and other income
Total gains (losses) (realized/unrealized):
Included in earnings	0	0	0	0
Net unrealized investment gains (losses):
Included in earnings	0	0	0	0
Reinsurance Recoverables
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair Value, beginning of period	3,943,881	7,192,057	5,457,649	5,474,263
Total gains (losses) (realized/unrealized):
Included in other comprehensive income (loss)	0	0	0	0
Net investment income	0	0	0	0
Purchases	224,620	223,330	665,401	679,236
Sales	0	0	0	0
Issuances	0	0	0	0
Settlements	0	0	0	0
Transfers into Level 3	0	0	0	0
Transfers out of Level 3	0	0	0	0
Other	0	(760,102)	0	(760,102)
Fair Value, end of period	2,958,093	5,277,737	2,958,093	5,277,737
Reinsurance Recoverables | Realized investment gains (losses), net
Total gains (losses) (realized/unrealized):
Included in earnings	(1,210,408)	(1,377,548)	(3,164,957)	(115,660)
Net unrealized investment gains (losses):
Included in earnings	(1,174,501)	(1,320,981)	(3,000,498)	(308,066)
Reinsurance Recoverables | Asset management fees and other income
Total gains (losses) (realized/unrealized):
Included in earnings	0	0	0	0
Net unrealized investment gains (losses):
Included in earnings	0	0	0	0
Receivables from parents and affiliates
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair Value, beginning of period	0	0	0	6,493
Total gains (losses) (realized/unrealized):
Included in other comprehensive income (loss)	0	0	(20)	0
Net investment income	0	0	0	0
Purchases	0	0	0	0
Sales	0	0	0	0
Issuances	0	0	0	0
Settlements	0	0	0	0
Transfers into Level 3	0	0	6,551	0
Transfers out of Level 3	0	0	(6,531)	(6,493)
Other	0	0	0	0
Fair Value, end of period	0	0	0	0
Receivables from parents and affiliates | Realized investment gains (losses), net
Total gains (losses) (realized/unrealized):
Included in earnings	0	0	0	0
Net unrealized investment gains (losses):
Included in earnings	0	0	0	0
Receivables from parents and affiliates | Asset management fees and other income
Total gains (losses) (realized/unrealized):
Included in earnings	0	0	0	0
Net unrealized investment gains (losses):
Included in earnings	0	0	0	0
Receivables from parents and affiliates | Interest credited to polcyholder account balances
Total gains (losses) (realized/unrealized):
Included in earnings		0		0
Net unrealized investment gains (losses):
Included in earnings		0		0
Future policy benefits
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair Value, beginning of period	(3,916,973)	(6,424,559)	(5,452,583)	(5,041,007)
Total gains (losses) (realized/unrealized):
Included in other comprehensive income (loss)	0	0	0	0
Net investment income	0	0	0	0
Purchases	0	0	0	0
Sales	0	0	0	0
Issuances	(231,467)	(221,503)	(686,055)	(654,141)
Settlements	0	0	0	0
Transfers Into Level 3	0	0	0	0
Transfers out of Level 3	0	0	0	0
Other	0	0	0	0
Fair Value, end of period	(2,908,324)	(5,272,326)	(2,908,324)	(5,272,326)
Future policy benefits | Realized investment gains (losses), net
Total gains (losses) (realized/unrealized):
Included in earnings	1,240,116	1,373,736	3,230,314	422,822
Net unrealized investment gains (losses):
Included in earnings	1,204,459	1,327,927	3,065,835	311,314
Future policy benefits | Asset management fees and other income
Total gains (losses) (realized/unrealized):
Included in earnings	0	0	0	0
Net unrealized investment gains (losses):
Included in earnings	0	0	0	0
Future policy benefits | Interest credited to polcyholder account balances
Total gains (losses) (realized/unrealized):
Included in earnings		0		0
Net unrealized investment gains (losses):
Included in earnings		0		0
Policyholders' account balances
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair Value, beginning of period	(41,946)	(31,978)	(46,651)	(20,337)
Total gains (losses) (realized/unrealized):
Included in other comprehensive income (loss)	0	0	0	0
Net investment income	0	0	0	0
Purchases	0	0	0	0
Sales	0	0	0	0
Issuances	0	0	0	0
Settlements	2,940	(17,026)	10,491	(16,531)
Transfers Into Level 3	0	0	0	0
Transfers out of Level 3	0	0	0	0
Other	0	0	0	0
Fair Value, end of period	(60,847)	(36,525)	(60,847)	(36,525)
Policyholders' account balances | Realized investment gains (losses), net
Total gains (losses) (realized/unrealized):
Included in earnings	(21,841)	(6,209)	(24,687)	(18,345)
Net unrealized investment gains (losses):
Included in earnings	(21,841)	(6,209)	(24,688)	(18,345)
Policyholders' account balances | Asset management fees and other income
Total gains (losses) (realized/unrealized):
Included in earnings	0	0	0	0
Net unrealized investment gains (losses):
Included in earnings	0	0	0	0
Policyholders' account balances | Interest credited to polcyholder account balances
Total gains (losses) (realized/unrealized):
Included in earnings		18,688		18,688
Net unrealized investment gains (losses):
Included in earnings		7,017		18,688
Other liabilities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair Value, beginning of period	(17,610)	0	0	0
Total gains (losses) (realized/unrealized):
Included in other comprehensive income (loss)	0	0	0	0
Net investment income	0	0	0	0
Purchases	8,778	0	26,483	0
Sales	0	0	0	0
Issuances	0	0	0	0
Settlements	0	0	0	0
Transfers Into Level 3	0	0	0	0
Transfers out of Level 3	0	0	0	0
Other	0	0	0	0
Fair Value, end of period	(41,333)	0	(41,333)	0
Other liabilities | Realized investment gains (losses), net
Total gains (losses) (realized/unrealized):
Included in earnings	(32,501)	0	(67,816)	0
Net unrealized investment gains (losses):
Included in earnings	(32,750)	0	(67,796)	0
Other liabilities | Asset management fees and other income
Total gains (losses) (realized/unrealized):
Included in earnings	0	0	0	0
Net unrealized investment gains (losses):
Included in earnings	0	0	0	0
Other liabilities | Interest credited to polcyholder account balances
Total gains (losses) (realized/unrealized):
Included in earnings		0		0
Net unrealized investment gains (losses):
Included in earnings		0		0
Available-for-sale | Fixed maturities | US government
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair Value, beginning of period	24,411	11,552	19,204	0
Total gains (losses) (realized/unrealized):
Included in other comprehensive income (loss)	0	0	0	0
Net investment income	0	0	0	0
Purchases	935	3,358	6,142	11,340
Sales	0	0	0	0
Issuances	0	0	0	0
Settlements	0	0	0	0
Transfers into Level 3	0	0	0	0
Transfers out of Level 3	0	0	0	0
Other	0	0	0	3,570
Fair Value, end of period	25,346	14,910	25,346	14,910
Available-for-sale | Fixed maturities | US government | Realized investment gains (losses), net
Total gains (losses) (realized/unrealized):
Included in earnings	0	0	0	0
Net unrealized investment gains (losses):
Included in earnings	0	0	0	0
Available-for-sale | Fixed maturities | US government | Asset management fees and other income
Total gains (losses) (realized/unrealized):
Included in earnings	0	0	0	0
Net unrealized investment gains (losses):
Included in earnings	0	0	0	0
Available-for-sale | Fixed maturities | Foreign government bonds
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair Value, beginning of period	160		0
Total gains (losses) (realized/unrealized):
Included in other comprehensive income (loss)	0		(15)
Net investment income	0		1
Purchases	0		0
Sales	0		0
Issuances	0		0
Settlements	0		0
Transfers into Level 3	0		0
Transfers out of Level 3	0		0
Other	(1)		173
Fair Value, end of period	159		159
Available-for-sale | Fixed maturities | Foreign government bonds | Realized investment gains (losses), net
Total gains (losses) (realized/unrealized):
Included in earnings	0		0
Net unrealized investment gains (losses):
Included in earnings	0		0
Available-for-sale | Fixed maturities | Foreign government bonds | Asset management fees and other income
Total gains (losses) (realized/unrealized):
Included in earnings	0		0
Net unrealized investment gains (losses):
Included in earnings	0		0
Available-for-sale | Fixed maturities | Corporate securities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair Value, beginning of period	62,418	45,375	75,421	102,556
Total gains (losses) (realized/unrealized):
Included in other comprehensive income (loss)	(2,249)	115	(2,839)	1,613
Net investment income	154	30	289	89
Purchases	669	1,841	4,816	13,666
Sales	0	0	(201)	(52,197)
Issuances	0	0	0	0
Settlements	(12,767)	(2,396)	(32,838)	(15,049)
Transfers into Level 3	0	3,223	4,028	5,204
Transfers out of Level 3	(3,936)	(1,099)	(4,145)	(4,691)
Other	0	(12)	14	(3,582)
Fair Value, end of period	43,467	46,939	43,467	46,939
Available-for-sale | Fixed maturities | Corporate securities | Realized investment gains (losses), net
Total gains (losses) (realized/unrealized):
Included in earnings	(822)	(138)	(1,078)	(670)
Net unrealized investment gains (losses):
Included in earnings	(1,310)	(157)	(1,385)	(1,265)
Available-for-sale | Fixed maturities | Corporate securities | Asset management fees and other income
Total gains (losses) (realized/unrealized):
Included in earnings	0	0	0	0
Net unrealized investment gains (losses):
Included in earnings	0	0	0	0
Available-for-sale | Fixed maturities | Structured securities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair Value, beginning of period	19,661	68,350	111,028	19,856
Total gains (losses) (realized/unrealized):
Included in other comprehensive income (loss)	(426)	187	(528)	(3,455)
Net investment income	(11)	9	17	97
Purchases	20,229	37,532	31,067	66,174
Sales	(10,648)	0	(10,844)	(7,471)
Issuances	0	0	0	0
Settlements	(2,138)	(3,317)	(10,204)	(46,117)
Transfers into Level 3	0	2,767	13,513	75,143
Transfers out of Level 3	0	(1,506)	(107,403)	(4,253)
Other	0	0	0	0
Fair Value, end of period	26,680	104,035	26,680	104,035
Available-for-sale | Fixed maturities | Structured securities | Realized investment gains (losses), net
Total gains (losses) (realized/unrealized):
Included in earnings	13	13	34	4,061
Net unrealized investment gains (losses):
Included in earnings	0	0	0	0
Available-for-sale | Fixed maturities | Structured securities | Asset management fees and other income
Total gains (losses) (realized/unrealized):
Included in earnings	0	0	0	0
Net unrealized investment gains (losses):
Included in earnings	$ 0	$ 0	$ 0	$ 0

Fair Value of Assets and Liab_7

Fair Value of Assets and Liabilities (Financial Instruments where Carrying Amounts and Fair Values May Differ) (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017	Sep. 30, 2017	Dec. 31, 2016
Assets:
Policy loans	$ 1,217,608	$ 1,161,101
Cash and cash equivalents	255,256	212,569	$ 196,326	$ 96,157
Accrued investment income	87,362	82,341
Receivables from parent and affiliates	312,256	300,116
Liabilities:
Cash collateral for loaned securities	7,585	33,169
Fair Value
Assets:
Commercial mortgage and other loans	1,170,760	1,111,625
Policy loans	1,217,608	1,161,101
Cash and cash equivalents	251,322	184,562
Accrued investment income	87,362	82,341
Receivables from parent and affiliates	185,075	167,545
Other assets	47,029	50,407
Total assets	2,959,156	2,757,581
Liabilities:
Policyholders’ account balances - investment contracts	1,465,725	1,455,018
Cash collateral for loaned securities	7,585	33,169
Short-term debt	1,744	0
Payables to parent and affiliates	166,136	223,550
Other liabilities	377,230	362,592
Total liabilities	2,018,420	2,074,329
Carrying Amount
Assets:
Commercial mortgage and other loans	1,177,395	1,083,419
Policy loans	1,217,608	1,161,101
Cash and cash equivalents	251,322	184,562
Accrued investment income	87,362	82,341
Receivables from parent and affiliates	185,075	167,545
Other assets	47,029	50,407
Total assets	2,965,791	2,729,375
Liabilities:
Policyholders’ account balances - investment contracts	1,474,604	1,458,599
Cash collateral for loaned securities	7,585	33,169
Short-term debt	1,744	0
Payables to parent and affiliates	166,136	223,550
Other liabilities	377,230	362,592
Total liabilities	2,027,299	2,077,910
Level 1 | Fair Value
Assets:
Commercial mortgage and other loans	0	0
Policy loans	0	0
Cash and cash equivalents	46,322	36,562
Accrued investment income	0	0
Receivables from parent and affiliates	0	0
Other assets	0	0
Total assets	46,322	36,562
Liabilities:
Policyholders’ account balances - investment contracts	0	0
Cash collateral for loaned securities	0	0
Short-term debt	0	0
Payables to parent and affiliates	0	0
Other liabilities	0	0
Total liabilities	0	0
Level 2 | Fair Value
Assets:
Commercial mortgage and other loans	0	0
Policy loans	0	0
Cash and cash equivalents	205,000	148,000
Accrued investment income	87,362	82,341
Receivables from parent and affiliates	185,075	167,545
Other assets	47,029	50,407
Total assets	524,466	448,293
Liabilities:
Policyholders’ account balances - investment contracts	1,194,005	1,178,583
Cash collateral for loaned securities	7,585	33,169
Short-term debt	1,744	0
Payables to parent and affiliates	166,136	223,550
Other liabilities	377,230	362,592
Total liabilities	1,746,700	1,797,894
Level 3 | Fair Value
Assets:
Commercial mortgage and other loans	1,170,760	1,111,625
Policy loans	1,217,608	1,161,101
Cash and cash equivalents	0	0
Accrued investment income	0	0
Receivables from parent and affiliates	0	0
Other assets	0	0
Total assets	2,388,368	2,272,726
Liabilities:
Policyholders’ account balances - investment contracts	271,720	276,435
Cash collateral for loaned securities	0	0
Short-term debt	0	0
Payables to parent and affiliates	0	0
Other liabilities	0	0
Total liabilities	$ 271,720	276,435
Other invested assets | Fair Value | Measurement at NAV per share
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cost Method Investments, Fair Value Disclosure		49,000
Other invested assets | Carrying Amount | Measurement at NAV per share
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cost Method Investments, Fair Value Disclosure		$ 41,000

Income Taxes (Narrative) (Detai

Income Taxes (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017
Change in Accounting Estimate [Line Items]
Income tax expense (benefit)	$ (2,760)	$ (38,660)	$ (18,471)	$ (69,098)
Effective income tax rate, percent			(37.60%)	(49.08%)
Federal Statutory income tax rate, percent			21.00%	35.00%
Tax Adjustments, Settlements, and Unusual Provisions			$ 21,000
Total provision for income tax expense (benefit)					$ 20,200
Industry Issue Resolution
Change in Accounting Estimate [Line Items]
Tax Adjustments, Settlements, and Unusual Provisions			5,000
U.S. Tax Cut and Jobs Act of 2017
Change in Accounting Estimate [Line Items]
Total provision for income tax expense (benefit)			$ 200

Reinsurance (Reinsurance amount

Reinsurance (Reinsurance amounts included in the Statements of Financial Position) (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Effects of Reinsurance [Line Items]
Reinsurance recoverables	$ 31,430,148	$ 32,521,264
Policy loans	(1,217,608)	(1,161,101)
Deferred policy acquisition costs	(1,530,072)	(1,376,211)
Other assets	387,078	465,467
Future policy benefits	16,498,119	18,561,550
Other liabilities	1,084,739	1,038,972
Impacts of Reinsurance
Effects of Reinsurance [Line Items]
Reinsurance recoverables	31,430,148	32,521,264
Policy loans	(129,636)	(124,843)
Deferred policy acquisition costs	(7,175,536)	(6,832,729)
Deferred sales inducements	(570,514)	(638,065)
Other assets	168,397	205,430
Policyholders’ account balances	4,997,598	5,004,885
Future policy benefits	3,277,715	3,301,841
Other liabilities	628,105	605,155
Unaffiliated activity
Effects of Reinsurance [Line Items]
Other assets	100	100
Other liabilities	$ 73,000	$ 73,000

Reinsurance (Reinsurance Recove

Reinsurance (Reinsurance Recoverable by Counterparty) (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Effects of Reinsurance [Line Items]
Total reinsurance recoverables	$ 31,430,148	$ 32,521,264
PAR U
Effects of Reinsurance [Line Items]
Total reinsurance recoverables	11,292,102	11,111,272
PALAC
Effects of Reinsurance [Line Items]
Total reinsurance recoverables	6,351,987	8,388,988
PURC
Effects of Reinsurance [Line Items]
Total reinsurance recoverables	3,980,335	3,577,962
PARCC
Effects of Reinsurance [Line Items]
Total reinsurance recoverables	2,503,689	2,546,673
GUL Re
Effects of Reinsurance [Line Items]
Total reinsurance recoverables	1,975,365	1,772,950
PAR Term
Effects of Reinsurance [Line Items]
Total reinsurance recoverables	1,700,457	1,559,618
Prudential of Taiwan
Effects of Reinsurance [Line Items]
Total reinsurance recoverables	1,411,997	1,406,686
Term Re
Effects of Reinsurance [Line Items]
Total reinsurance recoverables	1,187,127	966,509
Prudential Insurance
Effects of Reinsurance [Line Items]
Total reinsurance recoverables	922,025	1,118,004
DART
Effects of Reinsurance [Line Items]
Total reinsurance recoverables	79,061	0
Unaffiliated
Effects of Reinsurance [Line Items]
Total reinsurance recoverables	$ 26,003	$ 72,602

Reinsurance (Reinsurance amou_2

Reinsurance (Reinsurance amounts included in the Statement of Operations and Comprehensive Income (Loss)) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Premiums:
Direct	$ 451,790	$ 428,684	$ 1,343,358	$ 1,280,293
Assumed	57	63	175	194
Ceded	(437,696)	(413,623)	(1,306,564)	(1,242,529)
Net premiums	14,151	15,124	36,969	37,958
Policy charges and fee income:
Direct	843,551	816,191	2,407,062	2,593,583
Assumed	125,079	127,493	369,483	351,464
Ceded	(861,704)	(814,579)	(2,371,460)	(2,804,107)
Net policy charges and fee income	106,926	129,105	405,085	140,940
Net investment income:
Direct	87,260	87,605	249,366	269,999
Assumed	404	376	1,162	1,104
Ceded	(1,478)	(1,459)	(4,778)	(3,925)
Net investment income	86,186	86,522	245,750	267,178
Asset administration fees:
Direct	88,721	86,716	262,449	251,709
Assumed	0	0	0	0
Ceded	(84,994)	(82,161)	(251,705)	(238,577)
Net asset administration fees	3,727	4,555	10,744	13,132
Other income:
Direct	20,432	16,678	49,778	46,617
Assumed	57	(25)	(133)	184
Ceded	(219)	19	(46)	(4)
Amortization of reinsurance income	1,493	1,348	7,538	1,348
Net other income	21,763	18,020	57,137	48,145
Realized investment gains (losses), net:
Direct	1,234,853	1,390,083	3,213,137	442,408
Assumed	0	0	0	0
Ceded	(1,284,276)	(1,665,269)	(3,348,492)	(473,583)
Realized investment gains (losses), net	(49,423)	(275,186)	(135,355)	(31,175)
Policyholders’ benefits (including change in reserves):
Direct	636,021	560,252	1,932,194	1,787,338
Assumed	122,727	154,389	381,934	402,025
Ceded	(748,925)	(659,697)	(2,212,128)	(2,247,598)
Net policyholders’ benefits (including change in reserves)	9,823	54,944	102,000	(58,235)
Interest credited to policyholders’ account balances:
Direct	137,309	139,715	383,521	249,063
Assumed	34,414	33,858	105,780	101,687
Ceded	(127,014)	(135,377)	(361,239)	(221,827)
Net interest credited to policyholders’ account balances	44,709	38,196	128,062	128,923
Reinsurance expense allowances and general and administrative expenses, net of capitalization and amortization	(420,813)	(502,172)	(1,200,005)	(968,627)
Unaffiliated activity
Premiums:
Assumed	100	100	200	200
Ceded	(100)	0	(100)	0
Policy charges and fee income:
Ceded	(8,000)	(4,000)	(14,000)	(5,000)
Other income:
Assumed	(100)	0	(100)	200
Realized investment gains (losses), net:
Ceded	(33,000)	(49,000)	(81,000)	(26,000)
Policyholders’ benefits (including change in reserves):
Assumed	100	0	0	400
Ceded	$ (4,000)	$ (1,000)	$ (8,000)	$ 5,000

Reinsurance (Life Insurance In

Reinsurance (Life Insurance In Force) (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Sep. 30, 2017
Reinsurance Disclosures [Abstract]
Direct gross life insurance face amount in force	$ 922,386,427	$ 868,069,034
Assumed gross life insurance face amount in force	41,088,914	42,061,830
Reinsurance ceded	(889,021,800)	(844,683,670)
Net life insurance face amount in force	$ 74,453,541	$ 65,447,194

Reinsurance (Narrative) (Detail

Reinsurance (Narrative) (Details) - USD ($) $ in Thousands

Jan. 01, 2018

Jul. 01, 2017

Jun. 30, 2017

Jan. 01, 2017

Dec. 31, 2013

Jul. 01, 2011

Dec. 31, 2010

Dec. 31, 2009

Jan. 31, 2001

Sep. 30, 2018

Sep. 30, 2017

Sep. 30, 2018

Sep. 30, 2017

Dec. 31, 2016

Dec. 31, 2016

Dec. 31, 2013

Dec. 31, 2017

Dec. 31, 2013

Effects of Reinsurance [Line Items]

Realized investment gains (losses)

$ (49,423)

$ (275,186)

$ (135,355)

$ (31,175)

Reinsurance recoverables

31,430,148

31,430,148

$ 32,521,264

PAR U

Effects of Reinsurance [Line Items]

Reinsurance recoverables

11,292,102

11,292,102

11,111,272

PURC

Effects of Reinsurance [Line Items]

Reinsurance recoverables

3,980,335

3,980,335

3,577,962

PARCC

Effects of Reinsurance [Line Items]

Reinsurance recoverables

2,503,689

2,503,689

2,546,673

GUL Re

Effects of Reinsurance [Line Items]

Reinsurance recoverables

1,975,365

1,975,365

1,772,950

PAR Term

Effects of Reinsurance [Line Items]

Reinsurance recoverables

1,700,457

1,700,457

1,559,618

Prudential of Taiwan

Effects of Reinsurance [Line Items]

Reinsurance recoverables

1,411,997

1,411,997

1,406,686

Term Re

Effects of Reinsurance [Line Items]

Reinsurance recoverables

1,187,127

1,187,127

966,509

Prudential Insurance

Effects of Reinsurance [Line Items]

Reinsurance recoverables

922,025

922,025

1,118,004

DART

Effects of Reinsurance [Line Items]

Reinsurance recoverables

79,061

79,061

$ 0

Union Hamilton Reinsurance, Ltd.

Effects of Reinsurance [Line Items]

Reinsurance recoverables

$ 3,200,000

$ 3,200,000

Union Hamilton Reinsurance, Ltd. | Quote Share Reinsurance

Effects of Reinsurance [Line Items]

Reinsurance Retention Policy, Amount Retained, Maximum

$ 2,900,000

Reinsurance Retention Policy, Reinsured Risk, Percentage

50.00%

Affiliated Entity | PAR U

Effects of Reinsurance [Line Items]

Reinsurance Retention Policy, Reinsured Risk, Percentage

95.00%

70.00%

Affiliated Entity | PURC

Effects of Reinsurance [Line Items]

Reinsurance Retention Policy, Reinsured Risk, Percentage

95.00%

70.00%

Affiliated Entity | PARCC

Effects of Reinsurance [Line Items]

Reinsurance Retention Policy, Reinsured Risk, Percentage

90.00%

Affiliated Entity | GUL Re

Effects of Reinsurance [Line Items]

Reinsurance Retention Policy, Reinsured Risk, Percentage

95.00%

30.00%

Affiliated Entity | PAR Term

Effects of Reinsurance [Line Items]

Reinsurance Retention Policy, Reinsured Risk, Percentage

95.00%

Affiliated Entity | Prudential of Taiwan

Effects of Reinsurance [Line Items]

Related Party Transaction, Term

2 years

Affiliated Entity | Term Re

Effects of Reinsurance [Line Items]

Reinsurance Retention Policy, Reinsured Risk, Percentage

95.00%

Affiliated Entity | Prudential Insurance

Effects of Reinsurance [Line Items]

Reinsurance Retention Policy, Reinsured Risk, Percentage

100.00%

Affiliated Entity | DART

Effects of Reinsurance [Line Items]

Reinsurance Retention Policy, Reinsured Risk, Percentage

95.00%

Affiliated Entity | UPARC

Effects of Reinsurance [Line Items]

Reinsurance Retention Policy, Excess Retention, Percentage

30.00%

Reinsurance Retention Policy, Excess Retention, Amount Reinsured

$ 1,000

Reinsurance Retention Policy, Amount Retained, Maximum

$ 1,000

Reinsurance Retention Policy, Reinsured Risk, Percentage

27.00%

Reinsurance Retention Policy, Uncollected Charges And Fees Risk, Percentage

30.00%

Affiliated Entity | UPARC | Impacts of Recapture

Effects of Reinsurance [Line Items]

Invested assets received

$ 557,000

Reinsurance recoverable

760,000

Realized investment gains (losses)

$ (203,000)

Equity (Accumulated Other Compr

Equity (Accumulated Other Comprehensive Income (Loss)) (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2018USD ($)	Sep. 30, 2017USD ($)
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	$ 165,346
Ending Balance	(20,750)
Foreign Currency Translation Adjustments
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	(234)	$ (402)
Change in OCI before reclassifications	(12,379)	224
Amounts reclassified from AOCI	0	0
Income tax benefit (expense)	2,599	(78)
Ending Balance	(10,064)	(256)
Net unrealized investment gains (losses)
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	165,580	71,377
Change in OCI before reclassifications	(254,515)	147,980
Amounts reclassified from AOCI	(5,268)	(28,669)
Income tax benefit (expense)	54,557	(41,759)
Ending Balance	(10,686)	148,929
Accumulated Other Comprehensive Income (Loss)
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	165,346	70,975
Change in OCI before reclassifications	(266,894)	148,204
Amounts reclassified from AOCI	(5,268)	(28,669)
Income tax benefit (expense)	57,156	(41,837)
Ending Balance	(20,750)	148,673
ASU 2016-01 | Foreign Currency Translation Adjustments
Accumulated Other Comprehensive Income (Loss) [Line Items]
Cumulative effect of adoption	0
ASU 2016-01 | Net unrealized investment gains (losses)
Accumulated Other Comprehensive Income (Loss) [Line Items]
Cumulative effect of adoption	(1,539)
ASU 2016-01 | Accumulated Other Comprehensive Income (Loss)
Accumulated Other Comprehensive Income (Loss) [Line Items]
Cumulative effect of adoption	(1,539)
ASU 2018-02
Accumulated Other Comprehensive Income (Loss) [Line Items]
Ending Balance	30,400
ASU 2018-02 | Foreign Currency Translation Adjustments
Accumulated Other Comprehensive Income (Loss) [Line Items]
Cumulative effect of adoption	(50)
ASU 2018-02 | Net unrealized investment gains (losses)
Accumulated Other Comprehensive Income (Loss) [Line Items]
Cumulative effect of adoption	30,499
ASU 2018-02 | Accumulated Other Comprehensive Income (Loss)
Accumulated Other Comprehensive Income (Loss) [Line Items]
Cumulative effect of adoption	30,449
Cash flow hedges | Net unrealized investment gains (losses)
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	(18,000)	41,000
Ending Balance	$ (8,000)	$ 1,000

Equity (Reclassification out of

Equity (Reclassification out of Accumulated Other Comprehensive Income (Loss)) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Net unrealized investment gains (losses)
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Amounts reclassified from AOCI			$ (5,268)	$ (28,669)
Total reclassifications for the period
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Amounts reclassified from AOCI			(5,268)	(28,669)
Reclassification out of Accumulated Other Comprehensive Income | Net unrealized investment gains (losses)
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Amounts reclassified from AOCI	$ 1,634	$ 28,594	5,268	28,669
Reclassification out of Accumulated Other Comprehensive Income | Total reclassifications for the period
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Amounts reclassified from AOCI	1,634	28,594	5,268	28,669
Reclassification out of Accumulated Other Comprehensive Income | Net unrealized investment gains (losses) on available-for-sale securities
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net unrealized investment gains (losses)	(1,048)	31,556	(5,175)	30,844
Reclassification out of Accumulated Other Comprehensive Income | Currency/Interest rate | Cash flow hedges
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net unrealized investment gains (losses)	$ 2,682	$ (2,962)	$ 10,443	$ (2,175)

Equity (OTTI Net Unrealized Inv

Equity (OTTI Net Unrealized Investment Gains (Losses) in AOCI) (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2018USD ($)
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	$ 165,346
Ending Balance	(20,750)
Accumulated Other Comprehensive Income (Loss) Related To Net Unrealized Investment Gains (Losses)
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	165,580
Ending Balance	(10,686)
OTTI | Net Unrealized Gains (Losses) on Investments
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	1,609
Net investment gains (losses) on investments arising during the period	(1,614)
Reclassification adjustment for (gains) losses included in net income	(175)
Reclassification adjustment for OTTI (gains) losses excluded from net income	(128)
Impact of net unrealized investment (gains) losses on deferred policy acquisition costs and other costs	0
Impact of net unrealized investment (gains) losses on future policy benefits and policyholders' account balances	0
Ending Balance	(308)
OTTI | Deferred Policy Acquisition Costs and Other Costs
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	(99)
Net investment gains (losses) on investments arising during the period	0
Reclassification adjustment for (gains) losses included in net income	0
Reclassification adjustment for OTTI (gains) losses excluded from net income	0
Impact of net unrealized investment (gains) losses on deferred policy acquisition costs and other costs	(183)
Impact of net unrealized investment (gains) losses on future policy benefits and policyholders' account balances	0
Ending Balance	(282)
OTTI | Future Policy Benefits and Policyholders’ Account Balances
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	22
Net investment gains (losses) on investments arising during the period	0
Reclassification adjustment for (gains) losses included in net income	0
Reclassification adjustment for OTTI (gains) losses excluded from net income	0
Impact of net unrealized investment (gains) losses on deferred policy acquisition costs and other costs	0
Impact of net unrealized investment (gains) losses on future policy benefits and policyholders' account balances	206
Ending Balance	228
OTTI | Deferred Income Tax (Liability) Benefit
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	(682)
Net investment gains (losses) on investments arising during the period	339
Reclassification adjustment for (gains) losses included in net income	37
Reclassification adjustment for OTTI (gains) losses excluded from net income	0
Impact of net unrealized investment (gains) losses on deferred policy acquisition costs and other costs	38
Impact of net unrealized investment (gains) losses on future policy benefits and policyholders' account balances	(43)
Ending Balance	(311)
OTTI | Accumulated Other Comprehensive Income (Loss) Related To Net Unrealized Investment Gains (Losses)
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	850
Net investment gains (losses) on investments arising during the period	(1,275)
Reclassification adjustment for (gains) losses included in net income	(138)
Reclassification adjustment for OTTI (gains) losses excluded from net income	(128)
Impact of net unrealized investment (gains) losses on deferred policy acquisition costs and other costs	(145)
Impact of net unrealized investment (gains) losses on future policy benefits and policyholders' account balances	163
Ending Balance	$ (673)

Equity (All Other Net Unrealize

Equity (All Other Net Unrealized Investment Gains (Losses) in AOCI) (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2018USD ($)
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	$ 165,346
Ending Balance	(20,750)
Accumulated Other Comprehensive Income (Loss) Related To Net Unrealized Investment Gains (Losses)
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	165,580
Ending Balance	(10,686)
All Other | Net Unrealized Gains (Losses) on Investments
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	272,809
Net investment gains (losses) on investments arising during the period	(278,583)
Reclassification adjustment for (gains) losses included in net income	(5,093)
Reclassification adjustment for OTTI (gains) losses excluded from net income	128
Impact of net unrealized investment (gains) losses on deferred policy acquisition costs and other costs	0
Impact of net unrealized investment (gains) losses on future policy benefits and policyholders' account balances	0
Ending Balance	(13,107)
All Other | Deferred Policy Acquisition Costs and Other Costs
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	1,832
Net investment gains (losses) on investments arising during the period	0
Reclassification adjustment for (gains) losses included in net income	0
Reclassification adjustment for OTTI (gains) losses excluded from net income	0
Impact of net unrealized investment (gains) losses on deferred policy acquisition costs and other costs	(49,664)
Impact of net unrealized investment (gains) losses on future policy benefits and policyholders' account balances	0
Ending Balance	(47,832)
All Other | Future Policy Benefits and Policyholders’ Account Balances
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	(28,998)
Net investment gains (losses) on investments arising during the period	0
Reclassification adjustment for (gains) losses included in net income	0
Reclassification adjustment for OTTI (gains) losses excluded from net income	0
Impact of net unrealized investment (gains) losses on deferred policy acquisition costs and other costs	0
Impact of net unrealized investment (gains) losses on future policy benefits and policyholders' account balances	75,323
Ending Balance	46,325
All Other | Deferred Income Tax (Liability) Benefit
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	(80,913)
Net investment gains (losses) on investments arising during the period	58,504
Reclassification adjustment for (gains) losses included in net income	1,070
Reclassification adjustment for OTTI (gains) losses excluded from net income	0
Impact of net unrealized investment (gains) losses on deferred policy acquisition costs and other costs	10,431
Impact of net unrealized investment (gains) losses on future policy benefits and policyholders' account balances	(15,819)
Ending Balance	4,601
All Other | Accumulated Other Comprehensive Income (Loss) Related To Net Unrealized Investment Gains (Losses)
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	164,730
Net investment gains (losses) on investments arising during the period	(220,079)
Reclassification adjustment for (gains) losses included in net income	(4,023)
Reclassification adjustment for OTTI (gains) losses excluded from net income	128
Impact of net unrealized investment (gains) losses on deferred policy acquisition costs and other costs	(39,233)
Impact of net unrealized investment (gains) losses on future policy benefits and policyholders' account balances	59,504
Ending Balance	(10,013)
ASU 2016-01 | Accumulated Other Comprehensive Income (Loss) Related To Net Unrealized Investment Gains (Losses)
Accumulated Other Comprehensive Income (Loss) [Line Items]
Cumulative effect of adoption	(1,539)
ASU 2016-01 | All Other | Net Unrealized Gains (Losses) on Investments
Accumulated Other Comprehensive Income (Loss) [Line Items]
Cumulative effect of adoption	(2,368)
ASU 2016-01 | All Other | Deferred Policy Acquisition Costs and Other Costs
Accumulated Other Comprehensive Income (Loss) [Line Items]
Cumulative effect of adoption	0
ASU 2016-01 | All Other | Future Policy Benefits and Policyholders’ Account Balances
Accumulated Other Comprehensive Income (Loss) [Line Items]
Cumulative effect of adoption	0
ASU 2016-01 | All Other | Deferred Income Tax (Liability) Benefit
Accumulated Other Comprehensive Income (Loss) [Line Items]
Cumulative effect of adoption	829
ASU 2016-01 | All Other | Accumulated Other Comprehensive Income (Loss) Related To Net Unrealized Investment Gains (Losses)
Accumulated Other Comprehensive Income (Loss) [Line Items]
Cumulative effect of adoption	(1,539)
ASU 2018-02
Accumulated Other Comprehensive Income (Loss) [Line Items]
Ending Balance	30,400
ASU 2018-02 | Accumulated Other Comprehensive Income (Loss) Related To Net Unrealized Investment Gains (Losses)
Accumulated Other Comprehensive Income (Loss) [Line Items]
Cumulative effect of adoption	30,499
ASU 2018-02 | All Other | Net Unrealized Gains (Losses) on Investments
Accumulated Other Comprehensive Income (Loss) [Line Items]
Cumulative effect of adoption	0
ASU 2018-02 | All Other | Deferred Policy Acquisition Costs and Other Costs
Accumulated Other Comprehensive Income (Loss) [Line Items]
Cumulative effect of adoption	0
ASU 2018-02 | All Other | Future Policy Benefits and Policyholders’ Account Balances
Accumulated Other Comprehensive Income (Loss) [Line Items]
Cumulative effect of adoption	0
ASU 2018-02 | All Other | Deferred Income Tax (Liability) Benefit
Accumulated Other Comprehensive Income (Loss) [Line Items]
Cumulative effect of adoption	30,499
ASU 2018-02 | All Other | Accumulated Other Comprehensive Income (Loss) Related To Net Unrealized Investment Gains (Losses)
Accumulated Other Comprehensive Income (Loss) [Line Items]
Cumulative effect of adoption	$ 30,499

Related Party Transactions (Nar

Related Party Transactions (Narrative) (Details)		3 Months Ended					9 Months Ended
		Sep. 30, 2018USD ($)	Mar. 31, 2018USD ($)	Dec. 31, 2017USD ($)	Sep. 30, 2017USD ($)	Mar. 31, 2017USD ($)	Sep. 30, 2018USD ($)policy	Sep. 30, 2017USD ($)
Related Party Transaction [Line Items]
Commissions and fees		$ 106,926,000			$ 129,105,000		$ 405,085,000	$ 140,940,000
Other invested assets	[1]	333,382,000		$ 263,074,000			333,382,000
Net investment income		86,186,000			86,522,000		245,750,000	267,178,000
Fee income from revenue sharing agreement		3,727,000			4,555,000		10,744,000	13,132,000
Prudential Insurance
Related Party Transaction [Line Items]
Proceeds from Contributions from Affiliates			$ 6,000,000		149,000,000	$ 5,000,000
Dividends				250,000,000			0
Prudential Insurance
Related Party Transaction [Line Items]
Stock option program plan expense		300,000			200,000		1,000,000	900,000
Deferred compensation program expense		1,000,000			2,000,000		6,000,000	7,000,000
Pension plan expense		5,000,000			6,000,000		17,000,000	19,000,000
Welfare plan expense		7,000,000			7,000,000		$ 21,000,000	21,000,000
Defined contribution plan, employer matching contribution, percent (up to)							4.00%
Defined contribution plan, cost recognized		2,000,000			3,000,000		$ 7,000,000	8,000,000
Number of Corporate Owned Life Insurance policies sold | policy							5
Prudential Insurance and Prudential Financial
Related Party Transaction [Line Items]
Life Insurance, Corporate or Bank Owned, amount		3,884,000,000		3,688,000,000			$ 3,884,000,000
Fees related to Life Insurance, Corporate or Bank Owned, amount		11,000,000			11,000,000		34,000,000	34,000,000
Maximum amount of mortality risk		3,500,000					3,500,000
Prudential Financial
Related Party Transaction [Line Items]
Company's share of corporate expenses		17,000,000			17,000,000		$ 54,000,000	49,000,000
Number of Corporate Owned Life Insurance policies sold | policy							1
Affiliated Entity
Related Party Transaction [Line Items]
Accrued interest receivable related to long-tern notes receivable		900,000		1,000,000			$ 900,000
Revenues related to long-term notes receivable		1,000,000			1,000,000		4,000,000	4,000,000
Line of credit facility, maximum borrowing capacity		2,200,000,000					2,200,000,000
Interest expense related to loans payable		200,000			100,000		600,000	700,000
Affiliated Entity | PAD
Related Party Transaction [Line Items]
Commissions and fees		191,000,000			150,000,000		554,000,000	465,000,000
Affiliated Entity | ASTISI and PGIM Investments
Related Party Transaction [Line Items]
Fee income from revenue sharing agreement		85,000,000			82,000,000		252,000,000	239,000,000
Affiliated Entity | PGIM Investments
Related Party Transaction [Line Items]
Fee income from revenue sharing agreement		3,000,000			4,000,000		7,000,000	11,000,000
Affiliated Entity | PGIM
Related Party Transaction [Line Items]
Net investment income		3,000,000			4,000,000		10,000,000	11,000,000
Prudential Financial Joint Ventures
Related Party Transaction [Line Items]
Other invested assets		95,000,000		$ 79,000,000			95,000,000
Net investment income		$ 2,000,000			$ 1,000,000		$ 4,000,000	$ 7,000,000
[1]	Prior period amounts have been reclassified to conform to current period presentation. See "Adoption of ASU 2016-01" in Note 2 for details

Related Party Transactions (Aff

Related Party Transactions (Affiliated Notes Receivable) (Details) - Affiliated Entity - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2018	Dec. 31, 2017
Related Party Transaction [Line Items]
Total long-term notes receivable - affiliated	$ 127,181	$ 132,571
U.S. dollar floating rate notes
Related Party Transaction [Line Items]
Total long-term notes receivable - affiliated	$ 6,507	6,551
U.S. dollar floating rate notes | Minimum
Related Party Transaction [Line Items]
Interest Rates	3.74%
U.S. dollar floating rate notes | Maximum
Related Party Transaction [Line Items]
Interest Rates	3.83%
U.S. Dollar fixed rate notes
Related Party Transaction [Line Items]
Total long-term notes receivable - affiliated	$ 120,674	$ 126,020
U.S. Dollar fixed rate notes | Minimum
Related Party Transaction [Line Items]
Interest Rates	0.00%
U.S. Dollar fixed rate notes | Maximum
Related Party Transaction [Line Items]
Interest Rates	14.85%

Related Party Transactions (A_2

Related Party Transactions (Affiliated Asset Transfers) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017
Related Party Transaction [Line Items]
Realized investment gains (losses)	$ (49,423)	$ (275,186)	$ (135,355)	$ (31,175)
Affiliated Entity | PALAC January 17 Purchase
Related Party Transaction [Line Items]
Fair Value					$ 29
Book Value					29
APIC, Net of Tax Increase/(Decrease)					0
Realized investment gains (losses)					0
Affiliated Entity | Prudential Insurance June 2017 Sale
Related Party Transaction [Line Items]
Fair Value					16,965
Book Value					16,515
APIC, Net of Tax Increase/(Decrease)					293
Realized investment gains (losses)					0
Affiliated Entity | Prudential Insurance June 2017 Sale
Related Party Transaction [Line Items]
Fair Value					43,198
Book Value					42,301
APIC, Net of Tax Increase/(Decrease)					584
Realized investment gains (losses)					0
Affiliated Entity | UPARC September 2017 Transfer In
Related Party Transaction [Line Items]
Fair Value					37,354
Book Value					37,354
APIC, Net of Tax Increase/(Decrease)					0
Realized investment gains (losses)					0
Affiliated Entity | GUL Re September 2017 Transfer Out
Related Party Transaction [Line Items]
Fair Value					72,354
Book Value					72,354
APIC, Net of Tax Increase/(Decrease)					0
Realized investment gains (losses)					0
Affiliated Entity | GUL Re September 2017 Transfer Out
Related Party Transaction [Line Items]
Fair Value					1,254,457
Book Value					1,195,697
APIC, Net of Tax Increase/(Decrease)					0
Realized investment gains (losses)					58,760
Affiliated Entity | Prudential Financial September 2017 Transfer In
Related Party Transaction [Line Items]
Fair Value					415,271
Book Value					376,412
APIC, Net of Tax Increase/(Decrease)					25,259
Realized investment gains (losses)					0
Affiliated Entity | Prudential Financial September 2017 Transfer Out
Related Party Transaction [Line Items]
Fair Value					415,271
Book Value					376,412
APIC, Net of Tax Increase/(Decrease)					25,259
Realized investment gains (losses)					0
Affiliated Entity | UPARC September 2017 Transfer In
Related Party Transaction [Line Items]
Fair Value					417,067
Book Value					385,459
APIC, Net of Tax Increase/(Decrease)					0
Realized investment gains (losses)					31,608
Affiliated Entity | UPARC September 2017 Transfer In
Related Party Transaction [Line Items]
Fair Value					6,225
Book Value					5,002
APIC, Net of Tax Increase/(Decrease)					0
Realized investment gains (losses)					1,223
Affiliated Entity | GUL Re September 2017 Transfer Out
Related Party Transaction [Line Items]
Fair Value					6,225
Book Value					5,002
APIC, Net of Tax Increase/(Decrease)					0
Realized investment gains (losses)					1,223
Affiliated Entity | UPARC September 2017 Purchase
Related Party Transaction [Line Items]
Fair Value					20,685
Book Value					20,685
APIC, Net of Tax Increase/(Decrease)					0
Realized investment gains (losses)					0
Affiliated Entity | UPARC November 2017 Purchase
Related Party Transaction [Line Items]
Fair Value					41,250
Book Value					34,332
APIC, Net of Tax Increase/(Decrease)					0
Realized investment gains (losses)					6,919
Affiliated Entity | Prudential Insurance December 2017 Sale
Related Party Transaction [Line Items]
Fair Value					106,199
Book Value					105,191
APIC, Net of Tax Increase/(Decrease)					655
Realized investment gains (losses)					$ 0
Affiliated Entity | DART January 2018 Purchase
Related Party Transaction [Line Items]
Fair Value	21,457		21,457
Book Value	21,457		21,457
APIC, Net of Tax Increase/(Decrease)	0		0
Realized investment gains (losses)			0
Affiliated Entity | PALAC2 April 2018 Purchase
Related Party Transaction [Line Items]
Fair Value	64,313		64,313
Book Value	64,313		64,313
APIC, Net of Tax Increase/(Decrease)	0		0
Realized investment gains (losses)			0
Affiliated Entity | GULRe4 May 2018 Purchase
Related Party Transaction [Line Items]
Fair Value	87,486		87,486
Book Value	87,486		87,486
APIC, Net of Tax Increase/(Decrease)	0		0
Realized investment gains (losses)			0
Affiliated Entity | GULRe5 May 2018 Purchase
Related Party Transaction [Line Items]
Fair Value	37,921		37,921
Book Value	37,921		37,921
APIC, Net of Tax Increase/(Decrease)	$ 0		0
Realized investment gains (losses)			$ 0

Related Party Transactions Rela

Related Party Transactions Related Party Transactions (Debt Agreements) (Details) - Affiliated Entity - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2018	Dec. 31, 2017
Related Party Transaction [Line Items]
Short-term and Long-term debt	$ 1,744	$ 0
Prudential Funding, LLC
Related Party Transaction [Line Items]
Short-term and Long-term debt	$ 1,744	$ 0
Interest Rates	0.23%

Commitments and Contingent Li_2

Commitments and Contingent Liabilities (Narrative) (Details) - USD ($) $ in Millions	Sep. 30, 2018	Dec. 31, 2017	Jul. 31, 2017
Commitments and Contingent Liabilities [Line Items]
Litigation and regulatory matters loss contingency, range of possible loss, maximum (less than)	$ 100
Indonesia
Commitments and Contingent Liabilities [Line Items]
Joint Venture with CT Corp, Ownership Percentage			49.00%
Commitments | Commercial Mortgage Loans
Commitments and Contingent Liabilities [Line Items]
Total outstanding mortgage loan commitments	7	$ 15
Commitments | Investments
Commitments and Contingent Liabilities [Line Items]
Commitments to Purchase Investment (excluding Commercial Mortgage Loans)	$ 225	$ 196

Revision to Prior Year Inform_3

Revision to Prior Year Information (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017
ASSETS
Reinsurance recoverables	$ 31,430,148		$ 31,430,148		$ 32,521,264
TOTAL ASSETS	172,561,326		172,561,326		172,425,340
LIABILITIES
Future policy benefits	16,498,119		16,498,119		18,561,550
Income taxes payable	0		0		36,323
Other liabilities	1,084,739		1,084,739		1,038,972
TOTAL LIABILITIES	169,862,932		169,862,932		169,590,092
EQUITY
Retained earnings	1,570,052		1,570,052		1,526,310
TOTAL EQUITY	2,698,394		2,698,394		2,835,248
TOTAL LIABILITIES AND EQUITY	172,561,326		172,561,326		172,425,340
REVENUES
Policy charges and fee income	106,926	$ 129,105	405,085	$ 140,940
TOTAL REVENUES	183,330	(21,860)	620,330	476,178
BENEFITS AND EXPENSES
Policyholders’ benefits	9,823	54,944	102,000	(58,235)
TOTAL BENEFITS AND EXPENSES	166,760	193,996	571,210	335,403
INCOME (LOSS) FROM OPERATIONS BEFORE INCOME TAXES AND EQUITY IN EARNINGS OF OPERATING JOINT VENTURE	16,570	(215,856)	49,120	140,775
Income tax expense (benefit)	(2,760)	(38,660)	(18,471)	(69,098)
INCOME (LOSS) FROM OPERATIONS BEFORE EQUITY IN EARNINGS OF OPERATING JOINT VENTURE	19,330	(177,196)	67,591	209,873
Net income (loss)	18,725	(177,196)	66,255	209,873
COMPREHENSIVE INCOME (LOSS)	(11,700)	(183,651)	(148,751)	287,571
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	18,725	(177,196)	66,255	209,873
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income (loss)	18,725	(177,196)	66,255	209,873
Policy charges and fee income			(97,276)	(124,187)
Future policy benefits			1,392,199	1,455,418
Reinsurance recoverables			(1,304,316)	(1,564,329)
Income taxes			10,708	53,472
Other, net			(70,025)	90,529
Cash flows from (used in) operating activities			19,415	85,494
As previously reported
ASSETS
Reinsurance recoverables					32,555,500
TOTAL ASSETS					172,459,576
LIABILITIES
Future policy benefits					18,593,130
Income taxes payable					32,440
Other liabilities					1,060,123
TOTAL LIABILITIES					169,638,940
EQUITY
Retained earnings					1,511,698
TOTAL EQUITY					2,820,636
TOTAL LIABILITIES AND EQUITY					172,459,576
REVENUES
Policy charges and fee income		126,709		122,186
TOTAL REVENUES		(24,256)		457,424
BENEFITS AND EXPENSES
Policyholders’ benefits		54,637		(77,893)
TOTAL BENEFITS AND EXPENSES		193,689		315,745
INCOME (LOSS) FROM OPERATIONS BEFORE INCOME TAXES AND EQUITY IN EARNINGS OF OPERATING JOINT VENTURE		(217,945)		141,679
Income tax expense (benefit)		(39,449)		(69,061)
INCOME (LOSS) FROM OPERATIONS BEFORE EQUITY IN EARNINGS OF OPERATING JOINT VENTURE		(178,496)		210,740
Net income (loss)		(178,496)		210,740
COMPREHENSIVE INCOME (LOSS)		(184,951)		288,438
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)		(178,496)		210,740
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income (loss)		(178,496)		210,740
Future policy benefits				1,466,123
Reinsurance recoverables				(1,594,691)
Income taxes				53,508
Other, net				109,283
Cash flows from (used in) operating activities				85,494
Revision
ASSETS
Reinsurance recoverables					(34,236)
TOTAL ASSETS					(34,236)
LIABILITIES
Future policy benefits					(31,580)
Income taxes payable					3,883
Other liabilities					(21,151)
TOTAL LIABILITIES					(48,848)
EQUITY
Retained earnings					14,612
TOTAL EQUITY					14,612
TOTAL LIABILITIES AND EQUITY					$ (34,236)
REVENUES
Policy charges and fee income		2,396		18,754
TOTAL REVENUES		2,396		18,754
BENEFITS AND EXPENSES
Policyholders’ benefits		307		19,658
TOTAL BENEFITS AND EXPENSES		307		19,658
INCOME (LOSS) FROM OPERATIONS BEFORE INCOME TAXES AND EQUITY IN EARNINGS OF OPERATING JOINT VENTURE		2,089		(904)
Income tax expense (benefit)		789		(37)
INCOME (LOSS) FROM OPERATIONS BEFORE EQUITY IN EARNINGS OF OPERATING JOINT VENTURE		1,300		(867)
Net income (loss)		1,300		(867)
COMPREHENSIVE INCOME (LOSS)		1,300		(867)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)		1,300		(867)
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income (loss)		1,300		(867)
Future policy benefits				(10,705)
Reinsurance recoverables				30,362
Income taxes				(36)
Other, net				(18,754)
Cash flows from (used in) operating activities				0
Retained Earnings
BENEFITS AND EXPENSES
Net income (loss)			66,255	209,873
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance			1,526,310	1,448,517
Net income (loss)			66,255	209,873
Ending Balance	1,570,052	1,658,390	1,570,052	1,658,390
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income (loss)			66,255	209,873
Retained Earnings | As previously reported
BENEFITS AND EXPENSES
Net income (loss)				210,740
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance			1,511,698	1,437,266
Net income (loss)				210,740
Ending Balance		1,648,006		1,648,006
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income (loss)				210,740
Retained Earnings | Revision
BENEFITS AND EXPENSES
Net income (loss)				(867)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance			14,612	11,251
Net income (loss)				(867)
Ending Balance		10,384		10,384
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income (loss)				(867)
Total Equity
BENEFITS AND EXPENSES
Net income (loss)			66,255	209,873
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance			2,835,248	2,508,054
Net income (loss)			66,255	209,873
Total comprehensive income (loss)			(148,751)	287,571
Ending Balance	$ 2,698,394	2,950,000	2,698,394	2,950,000
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income (loss)			66,255	209,873
Total Equity | As previously reported
BENEFITS AND EXPENSES
Net income (loss)				210,740
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance			2,820,636	2,496,803
Net income (loss)				210,740
Total comprehensive income (loss)				288,438
Ending Balance		2,939,616		2,939,616
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income (loss)				210,740
Total Equity | Revision
BENEFITS AND EXPENSES
Net income (loss)				(867)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance			$ 14,612	11,251
Net income (loss)				(867)
Total comprehensive income (loss)				(867)
Ending Balance		$ 10,384		10,384
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income (loss)				$ (867)