Prudential Financial (PRU) 10-Q 4 May 18 2018 Q1 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares shares in Millions	3 Months Ended
	Mar. 31, 2018	Apr. 30, 2018
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Mar. 31, 2018
Document Fiscal Year Focus	2,018
Document Fiscal Period Focus	Q1
Trading Symbol	PRU
Entity Registrant Name	PRUDENTIAL FINANCIAL INC
Entity Central Index Key	1,137,774
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		420

Unaudited Interim Consolidated

Unaudited Interim Consolidated Statements of Financial Position - USD ($) $ in Millions		Mar. 31, 2018	Dec. 31, 2017
ASSETS
Fixed maturities, available-for-sale, at fair value (amortized cost: 2018-$319,180; 2017-$312,385)	[1]	$ 347,630	$ 346,780
Fixed maturities, held-to-maturity, at amortized cost (fair value: 2018-$2,511; 2017-$2,430)	[1]	2,120	2,049
Fixed maturities, trading, at fair value (amortized cost: 2018-$2,852; 2017-$3,509)	[1],[2]	2,885	3,507
Assets supporting experience-rated contractholder liabilities, at fair value	[1],[2]	21,637	22,097
Equity securities, at fair value (cost: 2018-$5,382; 2017-$5,154)	[1],[2]	7,289	7,329
Commercial mortgage and other loans (includes $298 and $593 measured at fair value under the fair value option at March 31, 2018 and December 31, 2017, respectively)	[1]	58,098	56,045
Policy loans		12,036	11,891
Other invested assets (includes $5,647 and $3,159 measured at fair value at March 31, 2018 and December 31, 2017, respectively)	[1],[2]	14,044	13,373
Short-term Investments	[2]	5,752	6,800
Total investments		471,491	469,871
Cash and cash equivalents	[1]	15,676	14,490
Accrued investment income	[1]	3,169	3,325
Deferred policy acquisition costs		19,649	18,992
Value of business acquired		1,995	1,591
Other assets	[1]	17,112	17,250
Separate account assets		300,585	306,617
TOTAL ASSETS		829,677	832,136
LIABILITIES
Future policy benefits		261,144	257,317
Policyholders’ account balances		149,917	148,189
Policyholders’ dividends		5,446	6,411
Securities sold under agreements to repurchase		8,633	8,400
Cash collateral for loaned securities		4,312	4,354
Income taxes		9,296	9,648
Short-term debt		1,383	1,380
Long-term debt		18,143	17,172
Other liabilities	[1]	17,689	16,619
Notes issued by consolidated variable interest entities (includes $612 and $1,196 measured at fair value under the fair value option at March 31, 2018 and December 31, 2017, respectively)	[1]	954	1,518
Separate account liabilities		300,585	306,617
Total liabilities		777,502	777,625
COMMITMENTS AND CONTINGENT LIABILITIES
EQUITY
Preferred Stock ($.01 par value; 10,000,000 shares authorized; none issued)		0	0
Common Stock ($.01 par value; 1,500,000,000 shares authorized; 660,111,339 shares issued at both March 31, 2018 and December 31, 2017)		6	6
Additional paid-in capital		24,722	24,769
Common Stock held in treasury, at cost (239,088,607 and 230,537,166 shares at March 31, 2018 and December 31, 2017, respectively)		(16,557)	(16,284)
Accumulated other comprehensive income (loss)		14,761	17,074
Retained earnings		28,898	28,671
Total Prudential Financial, Inc. equity		51,830	54,236
Noncontrolling interests		345	275
Total equity		52,175	54,511
TOTAL LIABILITIES AND EQUITY		$ 829,677	$ 832,136
[1]	See Note 4 for details of balances associated with variable interest entities.
[2]	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 Consolidated3

Unaudited Interim Consolidated Statements of Financial Position (Parenthetical) - USD ($) $ in Millions		Mar. 31, 2018	Dec. 31, 2017
Fixed Maturities, AFS, amortized cost		$ 319,180	$ 312,385
Fixed Maturities, HTM, at fair value		2,511	2,430
Fixed Maturities, Trading, amortized cost		2,852	3,509
Equity Securities, AFS, amortized cost		5,382	5,154
Commercial mortgage and other loans	[1]	58,098	56,045
Other invested assets, at fair value		5,647	3,159
Notes issued by consolidated VIEs	[1]	$ 954	$ 1,518
Preferred Stock, par value (in dollars per share)		$ 0.01	$ 0.01
Preferred Stock, shares authorized		10,000,000	10,000,000
Preferred Stock, shares issued		0	0
Common Stock, par value (in dollars per share)		$ 0.01	$ 0.01
Common Stock, shares authorized		1,500,000,000	1,500,000,000
Common Stock, shares issued		660,111,339	660,111,339
Common Stock held in treasury, at cost, shares		239,088,607	230,537,166
Fair value option
Commercial mortgage and other loans		$ 298	$ 593
Notes issued by consolidated VIEs		$ 612	$ 1,196
[1]	See Note 4 for details of balances associated with variable interest entities.

Unaudited Interim Consolidated4

Unaudited Interim Consolidated Statements of Operations - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
REVENUES
Premiums	$ 7,311	$ 6,481
Policy charges and fee income	1,504	1,533
Net investment income	3,998	4,061
Asset management and service fees	1,026	951
Other income (loss)	(507)	217
Realized investment gains (losses), net:
Other-than-temporary impairments on fixed maturity securities	(39)	(57)
Other-than-temporary impairments on fixed maturity securities transferred to Other comprehensive income	0	3
Other realized investment gains (losses), net	464	481
Total realized investment gains (losses), net	425	427
Total revenues	13,757	13,670
BENEFITS AND EXPENSES
Policyholders’ benefits	7,675	7,025
Interest credited to policyholders’ account balances	550	940
Dividends to policyholders	328	615
Amortization of deferred policy acquisition costs	588	439
General and administrative expenses	2,923	2,909
Total benefits and expenses	12,064	11,928
INCOME (LOSS) BEFORE INCOME TAXES AND EQUITY IN EARNINGS OF OPERATING JOINT VENTURES	1,693	1,742
Total income tax expense (benefit)	352	395
INCOME (LOSS) BEFORE EQUITY IN EARNINGS OF OPERATING JOINT VENTURES	1,341	1,347
Equity in earnings of operating joint ventures, net of taxes	23	25
NET INCOME (LOSS)	1,364	1,372
Less: Income (loss) attributable to noncontrolling interests	1	3
NET INCOME (LOSS) ATTRIBUTABLE TO PRUDENTIAL FINANCIAL, INC.	$ 1,363	$ 1,369
Basic earnings per share-Common Stock:
Net income (loss) attributable to Prudential Financial, Inc. (in dollars per share)	$ 3.19	$ 3.14
Diluted earnings per share-Common Stock:
Net income (loss) attributable to Prudential Financial, Inc. (in dollars per share)	3.14	3.09
Dividends declared per share of Common Stock (in dollars per share)	$ 0.90	$ 0.75

Unaudited Interim Consolidated5

Unaudited Interim Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Statement of Comprehensive Income [Abstract]
NET INCOME (LOSS)	$ 1,364	$ 1,372
Other comprehensive income (loss), before tax:
Foreign currency translation adjustments for the period	662	552
Net unrealized investment gains (losses)	(4,666)	(809)
Defined benefit pension and postretirement unrecognized periodic benefit (cost)	54	44
Total	(3,950)	(213)
Less: Income tax expense (benefit) related to other comprehensive income (loss)	(844)	(216)
Other comprehensive income (loss), net of taxes	(3,106)	3
Comprehensive income (loss)	(1,742)	1,375
Less: Comprehensive income (loss) attributable to noncontrolling interests	14	(16)
Comprehensive income (loss) attributable to Prudential Financial, Inc.	$ (1,756)	$ 1,391

Unaudited Interim Consolidated6

Unaudited Interim Consolidated Statements of Equity - USD ($) $ in Millions	Total	Common Stock	Additional Paid-in Capital	Retained Earnings	Common Stock Held In Treasury	Accumulated Other Comprehensive Income (Loss)	Total Prudential Financial, Inc. Equity	Noncontrolling Interests
Balance at Dec. 31, 2016	$ 46,088	$ 6	$ 24,606	$ 21,946	$ (15,316)	$ 14,621	$ 45,863	$ 225
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cumulative effect of adoption of accounting changes	0		5	(5)			0
Elimination of Gibraltar Life reporting lag	167			167			167
Common Stock acquired	(312)				(312)		(312)
Contributions from noncontrolling interests	4							4
Distributions to noncontrolling interests	(24)							(24)
Consolidations (deconsolidations) of noncontrolling interests	(1)							(1)
Stock-based compensation programs	169		16		153		169
Dividends declared on Common Stock	(327)			(327)			(327)
Comprehensive income:
Net income (loss)	1,372			1,369			1,369	3
Other comprehensive income (loss), net of tax	3					22	22	(19)
Comprehensive income (loss)	1,375						1,391	(16)
Balance at Mar. 31, 2017	47,141	6	24,627	23,150	(15,475)	14,643	46,951	190
Balance at Dec. 31, 2017	54,511	6	24,769	28,671	(16,284)	17,074	54,236	275
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cumulative effect of adoption of accounting changes | ASU 2016-01	57			904		(847)	57
Cumulative effect of adoption of accounting changes | ASU 2018-02	0			(1,653)		1,653	0
Common Stock acquired	(375)				(375)		(375)
Contributions from noncontrolling interests	61							61
Distributions to noncontrolling interests	(5)							(5)
Consolidations (deconsolidations) of noncontrolling interests	0							0
Stock-based compensation programs	55		(47)		102		55
Dividends declared on Common Stock	(387)			(387)			(387)
Comprehensive income:
Net income (loss)	1,364			1,363			1,363	1
Other comprehensive income (loss), net of tax	(3,106)					(3,119)	(3,119)	13
Comprehensive income (loss)	(1,742)						(1,756)	14
Balance at Mar. 31, 2018	$ 52,175	$ 6	$ 24,722	$ 28,898	$ (16,557)	$ 14,761	$ 51,830	$ 345

Unaudited Interim Consolidated7

Unaudited Interim Consolidated Statements of Cash Flows - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2018		Mar. 31, 2017
CASH FLOWS FROM OPERATING ACTIVITIES
Net income (loss)		$ 1,364		$ 1,372
Adjustments to reconcile net income to net cash provided by operating activities:
Realized investment (gains) losses, net		(425)		(427)
Policy charges and fee income		(560)		(541)
Interest credited to policyholders’ account balances		550		940
Depreciation and amortization		(22)		(50)
(Gains) losses on assets supporting experience-rated contractholder liabilities, net	[1]	403		(43)
Change in:
Deferred policy acquisition costs		(131)		(286)
Future policy benefits and other insurance liabilities		1,859		1,849
Income taxes		421		371
Derivatives, net		(1,302)		(783)
Other, net	[1]	144		(754)
Cash flows from (used in) operating activities	[1]	2,301		1,648
Proceeds from the sale/maturity/prepayment of:
Fixed maturities, available-for-sale		14,665		13,389
Fixed maturities, held-to-maturity		36		49
Fixed maturities, trading	[1]	207		427
Assets supporting experience-rated contractholder liabilities	[1]	3,487		6,086
Equity securities	[1]	980		903
Commercial mortgage and other loans		1,319		714
Policy loans		656		561
Other invested assets	[1]	434		354
Short-term investments	[1]	9,870		9,297
Payments for the purchase/origination of:
Fixed maturities, available-for-sale		(15,652)		(17,801)
Fixed maturities, trading	[1]	(109)		(605)
Assets supporting experience-rated contractholder liabilities	[1]	(3,271)		(6,024)
Equity securities	[1]	(890)		(747)
Commercial mortgage and other loans		(3,489)		(1,762)
Policy loans		(561)		(429)
Other invested assets		(713)		(349)
Short-term investments	[1]	(8,837)		(6,967)
Derivatives, net		(365)		30
Other, net	[1]	(40)		(145)
Cash flows from (used in) investing activities	[1]	(2,273)		(3,019)
CASH FLOWS FROM FINANCING ACTIVITIES
Policyholders’ account deposits		7,456		6,926
Policyholders’ account withdrawals		(7,080)		(6,570)
Net change in securities sold under agreements to repurchase and cash collateral for loaned securities		191		771
Cash dividends paid on Common Stock		(388)		(329)
Net change in financing arrangements (maturities 90 days or less)		(90)		45
Common Stock acquired		(363)		(291)
Common Stock reissued for exercise of stock options		45		116
Proceeds from the issuance of debt (maturities longer than 90 days)		1,071		145
Repayments of debt (maturities longer than 90 days)		(19)		(14)
Other, net		66		(369)
Cash flows from (used in) financing activities		889		430
Effect of foreign exchange rate changes on cash balances		304		116
NET INCREASE IN CASH, CASH EQUIVALENTS RESTRICTED CASH AND RESTRICTED CASH EQUIVALENT	[1]	1,221		(825)
CASH, CASH EQUIVALENTS RESTRICTED CASH AND RESTRICTED CASH EQUIVALENT, BEGINNING OF YEAR	[1]	14,536		14,181
CASH, CASH EQUIVALENTS RESTRICTED CASH AND RESTRICTED CASH EQUIVALENT, END OF PERIOD	[1]	15,757		13,356
NON-CASH TRANSACTIONS DURING THE PERIOD
Treasury Stock shares issued for stock-based compensation programs		129		95
RECONCILIATION TO STATEMENT OF FINANCIAL POSITION
Cash and cash equivalents		15,676	[2]	13,308
Restricted cash and restricted cash equivalents (included in “Other assets”)		81		48
Total cash, cash equivalents restricted cash and restricted cash equivalents		$ 15,757		$ 13,356
[1]	Prior period amounts have been reclassified to conform to current period presentation. See Note 2 for details.
[2]	See Note 4 for details of balances associated with variable interest entities.

Business and Basis of Presentat

Business and Basis of Presentation	3 Months Ended
	Mar. 31, 2018
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Organization, Consolidation and Presentation of Financial Statements Disclosure	BUSINESS AND BASIS OF PRESENTATION Prudential Financial, Inc. (“Prudential Financial”) and its subsidiaries (collectively, “Prudential” or the “Company”) provide a wide range of insurance, investment management, and other financial products and services to both individual and institutional customers throughout the United States and in many other countries. Principal products and services provided include life insurance, annuities, retirement-related services, mutual funds and investment management. The Company’s principal operations are comprised of five divisions, which together encompass seven segments, and its Corporate and Other operations. The U.S. Individual Solutions division consists of the Individual Annuities and Individual Life segments. The U.S. Workplace Solutions division consists of the Retirement and Group Insurance segments. The Investment Management division is comprised of the Investment Management segment. The International Insurance division is comprised of the International Insurance segment, and the Closed Block division is comprised of the Closed Block segment. The Closed Block division is accounted for as a divested business that is reported separately from the divested businesses that are included in the Company’s Corporate and Other operations. The Company’s Corporate and Other operations include corporate items and initiatives that are not allocated to business segments and businesses that have been or will be divested, excluding the Closed Block division. 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. The Unaudited Interim Consolidated Financial Statements include the accounts of Prudential Financial, entities over which the Company exercises control, including majority-owned subsidiaries and variable interest entities (“VIEs”) in which the Company is considered the primary beneficiary. See Note 4 for more information on the Company’s consolidated variable interest entities. 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 . Elimination of Gibraltar Life Reporting Lag Prior to January 1, 2018, the Company’s Gibraltar Life Insurance Company, Ltd. (“Gibraltar Life”) consolidated operations used a November 30 fiscal year end for purposes of inclusion in the Company’s Consolidated Financial Statements. The result of this reporting date difference was a one-month reporting lag for Gibraltar Life. As a result, the Company’s unaudited interim consolidated balance sheet as of March 31 previously included the assets and liabilities of Gibraltar Life as of February 28, and the Company’s unaudited interim consolidated income statement previously included Gibraltar Life’s results of operations for the three months ended February 28. Effective January 1, 2018, the Company converted its Gibraltar Life operations to a December 31 fiscal year end. This action eliminated the one-month reporting lag so that the reporting dates and periods of financial balances and results of Gibraltar Life are consistent with those of the Company. The establishment of a new fiscal year end for Gibraltar Life is considered a change in accounting principle to a preferable method and requires retrospective application. The Company believes this change in accounting principle is preferable given that it aligns the reporting dates of Prudential Financial and its subsidiaries which allows for more timely and consistent basis of reporting the financial position and results of Gibraltar Life. In order to effect this elimination, the Company restated prior periods’ equity which increased “Retained Earnings” by approximately $167 million as of December 31, 2015, 2016 and 2017. The impact to the Statements of Operations, Statements of Cash Flows, Statements of Comprehensive Income and other balance sheet captions, as a result of the elimination of the reporting lag, was not material for any of the periods presented. 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 (“DAC”) and related amortization; value of business acquired (“VOBA”) and its amortization; amortization of deferred sales inducements (“DSI”); measurement of goodwill and any related impairment; valuation of investments including derivatives and the recognition of other-than-temporary impairments (“OTTI”); future policy benefits including guarantees; pension and other postretirement benefits; 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 Certain amounts in prior periods have been reclassified to conform to the current period presentation.

Significant Accounting Policies

Significant Accounting Policies and Pronouncements	3 Months Ended
	Mar. 31, 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 Statement of Financial Position Line Items (1) (2) (3) (4) (in millions) Fixed maturities, available-for-sale, at fair value $ 346,780 $ 346,780 Fixed maturities, held-to-maturity, at amortized cost 2,049 2,049 * Fixed maturities, trading, at fair value 0 3,507 3,507 Trading account assets supporting insurance liabilities, at fair value 22,097 (22,097 ) 0 * Assets supporting experience-rated contractholder liabilities, at fair value 0 22,097 22,097 Other trading account assets, at fair value 5,752 (5,752 ) 0 Equity securities, available-for-sale, at fair value 6,174 (6,174 ) 0 * Equity securities, at fair value 0 6,174 1,155 7,329 Commercial mortgage and other loans 56,045 56,045 Policy loans 11,891 11,891 Other long-term investments 12,308 (12,308 ) 0 * Other invested assets 0 1,065 12,308 13,373 Short-term investments 6,775 25 6,800 Total investments $ 469,871 $ 0 $ 0 $ 0 $ 0 $ 469,871 * — New line item effective January 1, 2018. Strikethrough — Eliminated line item effective January 1, 2018. ________ (1) Retitled “Trading account assets supporting insurance liabilities, at fair value” to “Assets supporting experience-rated contractholder liabilities, at fair value” as equity securities are included in this line item, and they can no longer be described as trading. (2) 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. (3) Eliminated the line item “Other trading account assets, at fair value” and reclassified each component to another line item. (4) 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 millions) Increase / (Decrease) Other invested assets $ 229 Total assets $ 229 Policyholders’ dividends $ 157 Income taxes 15 Total liabilities 172 Accumulated other comprehensive income (loss) (847 ) Retained earnings 904 Total equity 57 Total liabilities and equity $ 229 (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 “Other trading account assets, at fair value.” These fixed maturities are primarily related to assets associated with consolidated variable interest entities for which the Company is the investment manager and the realized and unrealized gains and losses activity are generally offset by changes in the corresponding liabilities. 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.” Assets supporting experience-rated contractholder liabilities, at fair value is the new title of the financial statement line item formerly titled “Trading account assets supporting insurance liabilities, at fair value.” This financial statement line item includes invested assets that consist of fixed maturities, equity securities, and short-term investments and cash equivalents, that support certain products included in the Retirement and International Insurance segments which are experience-rated, meaning that the investment results associated with these products are expected to ultimately accrue to contractholders. 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 “Other trading account asset, at fair value” were reclassified to “Equity securities, at fair value.” The retitled financial statement line item is comprised of common stock, mutual fund shares and non-redeemable preferred stock, 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 securities reported in the financial statement line item 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 other-than-temporary impairment (“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 item 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 item consists of the Company’s non-coupon investments in Limited Partnerships and Limited Liability Companies (“LPs/LLCs”) (other than operating joint ventures), wholly-owned investment real estate, derivative assets and other investments. 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.” The Company consolidates LPs/LLCs in certain other instances where it is deemed to exercise control, or is considered the primary beneficiary of a variable interest entity. See Note 4 for additional information about VIEs. REVENUES AND BENEFITS AND EXPENSES Other income includes realized and unrealized gains or losses from investments reported as “Fixed maturities, trading,” “Assets supporting experience-rated contractholder liabilities, at fair value,” “Equity securities, at fair value,” and “Other invested assets” that are measured at fair value. Adoption of ASU 2014-09 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. Effective January 1, 2018, the Company adopted ASU 2014-09, Revenue from Contracts with Customers (Topic 606), using a modified retrospective method. The core principle of this ASU is that an entity should recognize revenue 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 or services. This core principle is assessed via application of a five-step revenue recognition model that is detailed within the ASU. There was no material impact to the financial statements at the date of adoption of this ASU. The prospective impact primarily affects revenue recognition policies pertaining to the Company’s Investment Management business. This revenue is classified within the “Asset management and service fees” line item in the Consolidated Statements of Operations. Adoption of this standard has no impact on revenues related to financial instruments and insurance contracts (some of which may be reflected within “Asset management and service fees”) given that these types of revenues were specifically scoped out of this ASU. “Asset management and service fees” principally includes asset-based asset management fees (which continue to be recognized in the period in which the services are performed) and performance-based incentive fees. Under the previously existing guidance, the Company recorded performance-based incentive fee revenue when the contractual terms of the asset management fee arrangement were satisfied such that the performance fee was no longer subject to clawback or contingency. Under the new guidance, the Company will record this revenue when the contractual terms of the asset management fee arrangement have been satisfied and it is probable that a significant reversal in the amount of the fee will not occur. Under this principle the Company will continue to record a deferred performance-based incentive fee liability to the extent it receives cash related to the performance-based incentive fee prior to meeting the revenue recognition criteria delineated above. Asset management and service fee revenues included $862 million of asset-based management fees, $5 million of performance-based incentive fees and $159 million of other fees for the three months ended March 31, 2018. For the three months ended March 31, 2017, asset management and service fee revenues included $796 million of asset-based management fees, $7 million of performance-based incentive fees and $148 million of other fees. These fees predominantly relate to investment management activities but also include certain asset-based fees associated with insurance contracts. In accordance with the provisions of the ASU, the comparative information for the prior period was not restated and continues to be reported under the accounting standards in effect for that period. Other ASU adopted during the three months ended March 31, 2018 Standard Description Effective date and method of adoption Effect on the financial statements or other significant matters 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 $1,653 million. ASU issued but not yet adopted as of March 31, 2018 Standard Description Effective date and method of adoption Effect on the financial statements or other significant matters ASU 2016-02 , Leases (Topic 842) This ASU ensures that assets and liabilities from all outstanding lease contracts are recognized on the balance sheet (with limited exception). The ASU substantially changes a Lessee’s accounting for leases and requires the recording on balance sheet of a “right-of-use” asset and liability to make lease payments for most leases. A Lessee will continue to recognize expense in its income statement in a manner similar to the requirements under the current lease accounting standard. For Lessors, the standard modifies classification criteria and accounting for sales-type and direct financing leases and requires a Lessor to derecognize the carrying value of the leased asset that is considered to have been transferred to a Lessee and record a lease receivable and residual asset (“receivable and residual” approach). The standard also eliminates the real estate specific provisions of the current standard (i.e., sale-leaseback). 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 is currently assessing the impact of the ASU on the Company’s Consolidated Financial Statements and Notes to the Consolidated Financial Statements. ASU 2016-13 , Financial Instruments-Credit Losses (Topic326): Measurement of Credit Losses on Financial Instruments 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 OTTI 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 the 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 OTTI 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 2017-04, Intangibles - Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment This ASU simplifies the subsequent measurement of goodwill by eliminating Step 2 from the goodwill impairment test in current GAAP, which measures a goodwill impairment by comparing the implied fair value of a reporting unit’s goodwill with the carrying amount of the goodwill. Under the ASU, a goodwill impairment should be recorded for the amount by which the carrying amount of a reporting unit exceeds its fair value (capped by the total amount of goodwill allocated to the reporting unit). January 1, 2020 using the prospective method (with early adoption permitted). 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. Standard Description Effective date and method of adoption Effect on the financial statements or other significant matters 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 is currently assessing the impact of the ASU 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 is currently assessing the impact of the ASU on the Company’s Consolidated Financial Statements and Notes to the Consolidated Financial Statements.

Investments

Investments	3 Months Ended
	Mar. 31, 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: March 31, 2018 Amortized Gross Unrealized Gains Gross Unrealized Losses Fair Value OTTI in AOCI(4) (in millions) Fixed maturities, available-for-sale: U.S. Treasury securities and obligations of U.S. government authorities and agencies $ 22,519 $ 3,114 $ 612 $ 25,021 $ 0 Obligations of U.S. states and their political subdivisions 9,483 842 30 10,295 0 Foreign government bonds 94,181 16,498 354 110,325 0 U.S. corporate public securities 81,309 5,882 1,365 85,826 (6 ) U.S. corporate private securities(1) 32,121 1,528 406 33,243 (10 ) Foreign corporate public securities 26,776 2,635 233 29,178 (5 ) Foreign corporate private securities 23,829 1,179 365 24,643 0 Asset-backed securities(2) 12,614 226 23 12,817 (184 ) Commercial mortgage-backed securities 13,021 87 245 12,863 0 Residential mortgage-backed securities(3) 3,327 129 37 3,419 (1 ) Total fixed maturities, available-for-sale(1) $ 319,180 $ 32,120 $ 3,670 $ 347,630 $ (206 ) March 31, 2018 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value (in millions) Fixed maturities, held-to-maturity: Foreign government bonds $ 915 $ 283 $ 0 $ 1,198 Foreign corporate public securities 685 75 0 760 Foreign corporate private securities(5) 88 2 0 90 Commercial mortgage-backed securities 0 0 0 0 Residential mortgage-backed securities(3) 432 31 0 463 Total fixed maturities, held-to-maturity(5) $ 2,120 $ 391 $ 0 $ 2,511 __________ (1) Excludes notes with amortized cost of $2,846 million (fair value, $2,846 million ), which have been offset with the associated payables under a netting agreement. (2) Includes credit-tranched securities collateralized by loan obligations, sub-prime mortgages, auto loans, credit cards, education loans and other asset types. (3) Includes publicly-traded agency pass-through securities and collateralized mortgage obligations. (4) Represents the amount of unrealized losses remaining in “Accumulated other comprehensive income (loss)” (“AOCI”), from the impairment measurement date. Amount excludes $440 million of net unrealized gains on impaired available-for-sale securities and $2 million of net unrealized gains on impaired held-to-maturity securities relating to changes in the value of such securities subsequent to the impairment measurement date. (5) Excludes notes with amortized cost of $4,753 million (fair value, $4,812 million ), which have been offset with the associated payables under a netting agreement. December 31, 2017 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value OTTI in AOCI(4) (in millions) Fixed maturities, available-for-sale: U.S. Treasury securities and obligations of U.S. government authorities and agencies $ 22,837 $ 3,647 $ 346 $ 26,138 $ 0 Obligations of U.S. states and their political subdivisions 9,366 1,111 6 10,471 0 Foreign government bonds 88,062 15,650 293 103,419 0 U.S. corporate public securities 81,967 8,671 414 90,224 (10 ) U.S. corporate private securities(1) 31,852 2,051 169 33,734 (13 ) Foreign corporate public securities 26,389 3,118 99 29,408 (5 ) Foreign corporate private securities 23,322 1,242 337 24,227 0 Asset-backed securities(2) 11,965 278 10 12,233 (237 ) Commercial mortgage-backed securities 13,134 238 91 13,281 0 Residential mortgage-backed securities(3) 3,491 165 11 3,645 (2 ) Total fixed maturities, available-for-sale(1) $ 312,385 $ 36,171 $ 1,776 $ 346,780 $ (267 ) December 31, 2017 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value (in millions) Fixed maturities, held-to-maturity: Foreign government bonds $ 865 $ 265 $ 0 $ 1,130 Foreign corporate public securities 654 82 0 736 Foreign corporate private securities(5) 84 2 0 86 Commercial mortgage-backed securities 0 0 0 0 Residential mortgage-backed securities(3) 446 32 0 478 Total fixed maturities, held-to-maturity(5) $ 2,049 $ 381 $ 0 $ 2,430 __________ (1) Excludes notes with amortized cost of $2,660 million (fair value, $2,660 million ), which have been offset with the associated payables under a netting agreement. (2) Includes credit-tranched securities collateralized by loan obligations, sub-prime mortgages, auto loans, credit cards, education loans and other asset types. (3) Includes publicly-traded agency pass-through securities and collateralized mortgage obligations. (4) Represents the amount of unrealized losses remaining in AOCI, from the impairment measurement date. Amount excludes $553 million of net unrealized gains on impaired available-for-sale securities and $2 million of net unrealized gains on impaired held-to-maturity securities relating to changes in the value of such securities subsequent to the impairment measurement date. (5) Excludes notes with amortized cost of $4,627 million (fair value, $4,913 million ), which have been offset with the associated payables under a netting agreement. 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: March 31, 2018 Less Than Twelve Months Total Fair Gross Fair Gross Fair Gross (in millions) Fixed maturities(1): U.S. Treasury securities and obligations of U.S. government authorities and agencies $ 4,324 $ 127 $ 4,984 $ 485 $ 9,308 $ 612 Obligations of U.S. states and their political subdivisions 1,217 16 264 14 1,481 30 Foreign government bonds 3,882 133 2,866 221 6,748 354 U.S. corporate public securities 28,236 822 5,983 543 34,219 1,365 U.S. corporate private securities 10,588 230 2,123 176 12,711 406 Foreign corporate public securities 5,635 126 1,478 107 7,113 233 Foreign corporate private securities 4,804 86 3,588 279 8,392 365 Asset-backed securities 2,511 13 297 10 2,808 23 Commercial mortgage-backed securities 5,843 116 2,138 129 7,981 245 Residential mortgage-backed securities 1,161 24 276 13 1,437 37 Total $ 68,201 $ 1,693 $ 23,997 $ 1,977 $ 92,198 $ 3,670 __________ (1) Includes $13 million of fair value and less than $1 million of gross unrealized losses, which are not reflected in AOCI, on securities classified as held-to-maturity, as of March 31, 2018 . December 31, 2017 Less Than Twelve Months Total Fair Gross Fair Gross Fair Gross (in millions) Fixed maturities(1): U.S. Treasury securities and obligations of U.S. government authorities and agencies $ 3,450 $ 28 $ 6,391 $ 318 $ 9,841 $ 346 Obligations of U.S. states and their political subdivisions 44 0 287 6 331 6 Foreign government bonds 4,417 55 2,937 238 7,354 293 U.S. corporate public securities 7,914 110 6,831 304 14,745 414 U.S. corporate private securities 4,596 76 2,009 93 6,605 169 Foreign corporate public securities 2,260 21 1,678 78 3,938 99 Foreign corporate private securities 1,213 20 5,339 317 6,552 337 Asset-backed securities 564 2 366 8 930 10 Commercial mortgage-backed securities 2,593 17 2,212 74 4,805 91 Residential mortgage-backed securities 584 4 286 7 870 11 Total $ 27,635 $ 333 $ 28,336 $ 1,443 $ 55,971 $ 1,776 __________ (1) Includes $12 million of fair value and less than $1 million of gross unrealized losses, which are not reflected in AOCI, on securities classified as held-to-maturity, as of December 31, 2017 . As of March 31, 2018 and December 31, 2017 , the gross unrealized losses on fixed maturity securities were composed of $3,182 million and $1,470 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 $488 million and $306 million , respectively, related to other than high or highest quality securities based on NAIC or equivalent rating. As of March 31, 2018 , the $1,977 million of gross unrealized losses on fixed maturity securities of twelve months or more were concentrated in U.S. government bonds, foreign government bonds and in the Company’s corporate securities within the consumer non-cyclical, energy and utility sectors. As of December 31, 2017 , the $1,433 million of gross unrealized losses on fixed maturity securities of twelve months or more were concentrated in U.S. government bonds, foreign government bonds and in the Company’s corporate securities within the energy, utility and consumer non-cyclical 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 March 31, 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 March 31, 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: March 31, 2018 Available-for-Sale Held-to-Maturity Amortized Cost Fair Value Amortized Cost Fair Value (in millions) Fixed maturities: Due in one year or less $ 13,067 $ 13,597 $ 0 $ 0 Due after one year through five years 50,349 53,811 185 191 Due after five years through ten years 66,026 70,770 592 663 Due after ten years(1) 160,776 180,353 911 1,194 Asset-backed securities 12,614 12,817 0 0 Commercial mortgage-backed securities 13,021 12,863 0 0 Residential mortgage-backed securities 3,327 3,419 432 463 Total $ 319,180 $ 347,630 $ 2,120 $ 2,511 __________ (1) Excludes available-for-sale notes with amortized cost of $2,846 million (fair value, $2,846 million ) and held-to-maturity notes with amortized cost of $4,753 million (fair value, $4,812 million ), which have been offset with the associated payables under a netting agreement. 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 March 31, 2018 2017 (in millions) Fixed maturities, available-for-sale: Proceeds from sales(1) $ 9,585 $ 7,730 Proceeds from maturities/prepayments 5,226 5,874 Gross investment gains from sales and maturities 374 391 Gross investment losses from sales and maturities (257 ) (163 ) OTTI recognized in earnings(2) (39 ) (54 ) Fixed maturities, held-to-maturity: Proceeds from maturities/prepayments(3) $ 36 $ 50 __________ (1) Includes $146 million and $215 million of non-cash related proceeds due to the timing of trade settlements for the three months ended March 31, 2018 and 2017 , respectively. (2) Excludes the portion of OTTI amounts remaining in “Other comprehensive income (loss)” (“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 impairment. (3) Includes $0 million and $1 million of non-cash related proceeds due to the timing of trade settlements for the three months ended March 31, 2018 and 2017 , respectively. 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 March 31, 2018 2017 (in millions) Credit loss impairments: Balance, beginning of period $ 319 $ 359 New credit loss impairments 0 0 Additional credit loss impairments on securities previously impaired 0 1 Increases due to the passage of time on previously recorded credit losses 2 3 Reductions for securities which matured, paid down, prepaid or were sold during the period (113 ) (9 ) Reductions for securities impaired to fair value during the period(1) (4 ) (3 ) Accretion of credit loss impairments previously recognized due to an increase in cash flows expected to be collected (1 ) (1 ) Balance, end of period $ 203 $ 350 __________ (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. Assets Supporting Experience-Rated Contractholder Liabilities The following table sets forth the composition of “Assets supporting experience-rated contractholder liabilities,” as of the dates indicated: March 31, 2018 December 31, 2017 Amortized Fair Value Amortized Fair Value (in millions) Short-term investments and cash equivalents $ 151 $ 151 $ 245 $ 245 Fixed maturities: Corporate securities 13,573 13,627 13,816 14,073 Commercial mortgage-backed securities 2,394 2,369 2,294 2,311 Residential mortgage-backed securities(1) 923 908 961 966 Asset-backed securities(2) 1,398 1,426 1,363 1,392 Foreign government bonds 1,101 1,104 1,050 1,057 U.S. government authorities and agencies and obligations of U.S. states 367 400 357 410 Total fixed maturities 19,756 19,834 19,841 20,209 Equity securities 1,395 1,652 1,278 1,643 Total assets supporting experience-rated contractholder liabilities $ 21,302 $ 21,637 $ 21,364 $ 22,097 __________ (1) Includes publicly-traded agency pass-through securities and collateralized mortgage obligations. (2) Includes credit-tranched securities collateralized by sub-prime mortgages, auto loans, credit cards, education loans and other asset types. The net change in unrealized gains (losses) from assets supporting experience-rated contractholder liabilities still held at period end, recorded within “Other income,” was $(398) million and $46 million during the three months ended March 31, 2018 and 2017 , respectively. Equity Securities The net change in unrealized gains (losses) from equity securities still held at period end, recorded within “Other income,” was $(188) million and $43 million during the three months ended March 31, 2018 and 2017, respectively. Concentrations of Financial Instruments The Company monitors its concentrations of financial instruments and mitigates credit risk by maintaining a diversified investment portfolio which limits exposure to any one issuer. As of the dates indicated, the Company’s exposure to concentrations of credit risk of single issuers greater than 10% of the Company’s stockholders’ equity included securities of the U.S. government and certain U.S. government agencies and securities guaranteed by the U.S. government, as well as the securities disclosed below: March 31, 2018 December 31, 2017 Amortized Fair Value Amortized Fair Value (in millions) Investments in Japanese government and government agency securities: Fixed maturities, available-for-sale $ 69,800 $ 82,712 $ 64,628 $ 76,311 Fixed maturities, held-to-maturity 893 1,170 844 1,103 Fixed maturities, trading 24 24 23 23 Assets supporting experience-rated contractholder liabilities 705 717 657 667 Total $ 71,422 $ 84,623 $ 66,152 $ 78,104 March 31, 2018 December 31, 2017 Amortized Fair Value Amortized Fair Value (in millions) Investments in South Korean government and government agency securities: Fixed maturities, available-for-sale $ 9,824 $ 11,124 $ 9,425 $ 10,989 Fixed maturities, held-to-maturity 0 0 0 0 Fixed maturities, trading 0 0 0 0 Assets supporting experience-rated contractholder liabilities 15 15 15 15 Total $ 9,839 $ 11,139 $ 9,440 $ 11,004 Commercial Mortgage and Other Loans The following table sets forth the composition of “Commercial mortgage and other loans,” as of the dates indicated: March 31, 2018 December 31, 2017 Amount (in millions) % of Total Amount (in millions) % of Total Commercial mortgage and agricultural property loans by property type: Office $ 13,257 23.1 % $ 12,670 22.9 % Retail 8,751 15.3 8,543 15.5 Apartments/Multi-Family 15,670 27.4 15,465 28.0 Industrial 10,656 18.6 9,451 17.1 Hospitality 1,953 3.4 2,067 3.7 Other 3,806 6.6 3,888 7.0 Total commercial mortgage loans 54,093 94.4 52,084 94.2 Agricultural property loans 3,223 5.6 3,203 5.8 Total commercial mortgage and agricultural property loans by property type 57,316 100.0 % 55,287 100.0 % Valuation allowance (102 ) (100 ) Total net commercial mortgage and agricultural property loans by property type 57,214 55,187 Other loans: Uncollateralized loans 690 663 Residential property loans 196 196 Other collateralized loans 4 5 Total other loans 890 864 Valuation allowance (6 ) (6 ) Total net other loans 884 858 Total commercial mortgage and other loans(1) $ 58,098 $ 56,045 __________ (1) Includes loans held for sale which are carried at fair value and are collateralized primarily by apartment complexes. As of March 31, 2018 and December 31, 2017 , the net carrying value of these loans was $298 million and $593 million , respectively. As of March 31, 2018 , the commercial mortgage and agricultural property loans were geographically dispersed throughout the United States (with the largest concentrations in California (27%) , Texas (9%) and New York (8%) ) and included loans secured by properties in Europe (6%) , Australia ( 1% ) and Asia (1%) . The following tables set forth the activity in the allowance for credit losses for commercial mortgage and other loans, as of the dates indicated: March 31, 2018 Commercial Mortgage Loans Agricultural Property Loans Residential Property Loans Other Collateralized Loans Uncollateralized Loans Total (in millions) Allowance for credit losses: Balance, beginning of year $ 97 $ 3 $ 1 $ 0 $ 5 $ 106 Addition to (release of) allowance for losses 2 0 0 0 0 2 Charge-offs, net of recoveries 0 0 0 0 0 0 Change in foreign exchange 0 0 0 0 0 0 Total ending balance $ 99 $ 3 $ 1 $ 0 $ 5 $ 108 December 31, 2017 Commercial Mortgage Loans Agricultural Property Loans Residential Property Loans Other Collateralized Loans Uncollateralized Loans Total (in millions) Allowance for credit losses: Balance, beginning of year $ 96 $ 2 $ 2 $ 0 $ 6 $ 106 Addition to (release of) allowance for losses 2 1 (1 ) 0 (1 ) 1 Charge-offs, net of recoveries (1 ) 0 0 0 0 (1 ) Change in foreign exchange 0 0 0 0 0 0 Total ending balance $ 97 $ 3 $ 1 $ 0 $ 5 $ 106 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: March 31, 2018 Commercial Mortgage Loans Agricultural Property Loans Residential Property Loans Other Collateralized Loans Uncollateralized Loans Total (in millions) Allowance for credit losses: Individually evaluated for impairment $ 7 $ 0 $ 0 $ 0 $ 0 $ 7 Collectively evaluated for impairment 92 3 1 0 5 101 Total ending balance(1) $ 99 $ 3 $ 1 $ 0 $ 5 $ 108 Recorded investment(2): Individually evaluated for impairment $ 71 $ 35 $ 0 $ 0 $ 2 $ 108 Collectively evaluated for impairment 54,022 3,188 196 4 688 58,098 Total ending balance(1) $ 54,093 $ 3,223 $ 196 $ 4 $ 690 $ 58,206 __________ (1) As of March 31, 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 Residential Property Loans Other Collateralized Loans Uncollateralized Loans Total (in millions) Allowance for credit losses: Individually evaluated for impairment $ 7 $ 0 $ 0 $ 0 $ 0 $ 7 Collectively evaluated for impairment 90 3 1 0 5 99 Total ending balance(1) $ 97 $ 3 $ 1 $ 0 $ 5 $ 106 Recorded investment(2): Individually evaluated for impairment $ 75 $ 39 $ 0 $ 0 $ 2 $ 116 Collectively evaluated for impairment 52,009 3,164 196 5 661 56,035 Total ending balance(1) $ 52,084 $ 3,203 $ 196 $ 5 $ 663 $ 56,151 __________ (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 based upon the recorded investment gross of allowance for credit losses, as of the date indicated: Commercial mortgage loans March 31, 2018 Debt Service Coverage Ratio > 1.2X 1.0X to <1.2X < 1.0X Total (in millions) Loan-to-Value Ratio: 0%-59.99% $ 30,215 $ 682 $ 265 $ 31,162 60%-69.99% 14,694 621 156 15,471 70%-79.99% 6,524 702 10 7,236 80% or greater 84 116 24 224 Total commercial mortgage loans $ 51,517 $ 2,121 $ 455 $ 54,093 Agricultural property loans March 31, 2018 Debt Service Coverage Ratio > 1.2X 1.0X to <1.2X < 1.0X Total (in millions) Loan-to-Value Ratio: 0%-59.99% $ 2,974 $ 175 $ 2 $ 3,151 60%-69.99% 72 0 0 72 70%-79.99% 0 0 0 0 80% or greater 0 0 0 0 Total agricultural property loans $ 3,046 $ 175 $ 2 $ 3,223 Total commercial mortgage and agricultural property loans March 31, 2018 Debt Service Coverage Ratio > 1.2X 1.0X to <1.2X < 1.0X Total (in millions) Loan-to-Value Ratio: 0%-59.99% $ 33,189 $ 857 $ 267 $ 34,313 60%-69.99% 14,766 621 156 15,543 70%-79.99% 6,524 702 10 7,236 80% or greater 84 116 24 224 Total commercial mortgage and agricultural property loans $ 54,563 $ 2,296 $ 457 $ 57,316 The following tables set forth certain key credit quality indicators based upon the recorded investment gross of allowance for credit losses, as of the date indicated: Commercial mortgage loans December 31, 2017 Debt Service Coverage Ratio > 1.2X 1.0X to <1.2X < 1.0X Total (in millions) Loan-to-Value Ratio: 0%-59.99% $ 30,082 $ 639 $ 251 $ 30,972 60%-69.99% 13,658 530 121 14,309 70%-79.99% 5,994 514 29 6,537 80% or greater 93 54 119 266 Total commercial mortgage loans $ 49,827 $ 1,737 $ 520 $ 52,084 Agricultural property loans December 31, 2017 Debt Service Coverage Ratio > 1.2X 1.0X to <1.2X < 1.0X Total (in millions) Loan-to-Value Ratio: 0%-59.99% $ 2,988 $ 170 $ 5 $ 3,163 60%-69.99% 40 0 0 40 70%-79.99% 0 0 0 0 80% or greater 0 0 0 0 Total agricultural property loans $ 3,028 $ 170 $ 5 $ 3,203 Total commercial mortgage and agricultural property loans December 31, 2017 Debt Service Coverage Ratio > 1.2X 1.0X to <1.2X < 1.0X Total (in millions) Loan-to-Value Ratio: 0%-59.99% $ 33,070 $ 809 $ 256 $ 34,135 60%-69.99% 13,698 530 121 14,349 70%-79.99% 5,994 514 29 6,537 80% or greater 93 54 119 266 Total commercial mortgage and agricultural property loans $ 52,855 $ 1,907 $ 525 $ 55,287 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: March 31, 2018 Current 30-59 Days Past Due 60-89 Days Past Due 90 Days or More Past Due(1) Total Past Due Total Non-Accrual (in millions) Commercial mortgage loans $ 54,093 $ 0 $ 0 $ 0 $ 0 $ 54,093 $ 70 Agricultural property loans 3,222 0 0 1 1 3,223 23 Residential property loans 191 2 1 2 5 196 2 Other collateralized loans 4 0 0 0 0 4 0 Uncollateralized loans 690 0 0 0 0 690 0 Total $ 58,200 $ 2 $ 1 $ 3 $ 6 $ 58,206 $ 95 __________ (1) As of March 31, 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 Past Due Total Non-Accrual (in millions) Commercial mortgage loans $ 52,084 $ 0 $ 0 $ 0 $ 0 $ 52,084 $ 71 Agricultural property loans 3,201 0 0 2 2 3,203 23 Residential property loans 191 3 0 2 5 196 2 Other collateralized loans 5 0 0 0 0 5 0 Uncollateralized loans 663 0 0 0 0 663 0 Total $ 56,144 $ 3 $ 0 $ 4 $ 7 $ 56,151 $ 96 __________ (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 months ended March 31, 2018 and 2017 , there were no commercial mortgage and other loans acquired, other than those through direct origination. For the three months ended March 31, 2018 and 2017 , there were no commercial mortgage and other loans sold, other than those classified as held-for-sale. The Company’s commercial mortgage and other loans may occasionally be involved in a troubled debt restructuring. During the three months ended March 31, 2018 , there were $24 million of new troubled debt restructurings related to commercial mortgage and other loans with payment defaults on loans that were modified as a troubled debt restructuring within the twelve months preceding. During the three months ended March 31, 2017 , there were no new troubled debt restructurings related to commercial mortgage and other loans with payment defaults on loans that were modified as a troubled debt restructuring within the twelve months preceding. As of both March 31, 2018 and December 31, 2017 , the Company had no significant commitments to provide additional funds to borrowers that had been involved in a troubled debt restructuring. For additional information relating to the accounting for troubled debt restructurings, 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 . As of March 31, 2018 , there were $4 million of private debt commitments to provide additional funds to borrowers that had been involved in a troubled debt restructuring. Other Invested Assets The following table sets forth the composition of “Other invested assets,” as of the dates indicated: March 31, 2018 December 31, 2017 (in millions) LPs/LLCs: Equity method: Private equity $ 2,929 $ 2,954 Hedge funds 907 803 Real estate-related 1,153 972 Subtotal equity method 4,989 4,729 Fair value: Private equity 1,622 1,325 Hedge funds 2,387 2,419 Real estate-related 288 247 Subtotal fair value(1) 4,297 3,991 Total LPs/LLCs 9,286 8,720 Real estate held through direct ownership(2) 2,421 2,409 Derivative instruments 1,226 1,214 Other(3) 1,111 1,030 Total other invested assets(4) $ 14,044 $ 13,373 __________ (1) As of December 31, 2017 , $ 1,572 million was accounted for using the cost method. (2) As of March 31, 2018 and December 31, 2017 , real estate held through direct ownership had mortgage debt of $802 million and $799 million , respectively. (3) Primarily includes strategic investments made by investment management operations, leveraged leases and member and activity stock held in the Federal Home Loan Banks of New York and Boston. For additional information regarding the Company’s holdings in the Federal Home Loan Banks of New York and Boston, see Note 14 to the Consolidated Financial Statements included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2017 . (4) 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 2018 2017 (in millions) Fixed maturities, available-for-sale(1) $ 2,954 $ 2,795 Fixed maturities, held-to-maturity(1) 55 54 Fixed maturities, trading 31 42 Assets supporting experience-rated contractholder liabilities, at fair value 191 195 Equity securities, at fair value 35 90 Commercial mortgage and other loans 569 537 Policy loans 152 152 Other invested assets 141 332 Short-term investments and cash equivalents 72 44 Gross investment income 4,200 4,241 Less: investment expenses (202 ) (180 ) Net investment income(2) $ 3,998 $ 4,061 __________ (1) Includes income on credit-linked notes which are reported on the same financial statement line item as related surplus notes, as conditions are met for right to offset. (2) 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 2018 2017 (in millions) Fixed maturities(1) $ 78 $ 174 Equity securities(2) 0 256 Commercial mortgage and other loans 12 14 Investment real estate 2 6 LPs/LLCs 6 (11 ) Derivatives(3) 328 (11 ) Other (1 ) (1 ) Realized investment gains (losses), net $ 425 $ 427 __________ (1) Includes fixed maturity securities classified as available-for-sale and held-to-maturity 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: March 31, December 31, (in millions) Fixed maturity securities, available-for-sale—with OTTI $ 234 $ 286 Fixed maturity securities, available-for-sale—all other 28,216 34,109 Equity securities, available-for-sale(1) 0 2,027 Derivatives designated as cash flow hedges(2) (622 ) (39 ) Other investments(3) 26 15 Net unrealized gains (losses) on investments $ 27,854 $ 36,398 __________ (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 5. (3) As of March 31, 2018 , there were no net unrealized losses on held-to-maturity securities that were previously transferred from available-for-sale. Includes net unrealized gains on certain joint ventures that are strategic in nature and are included in “Other assets.” 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. The following table sets forth the composition of “Securities sold under agreements to repurchase,” as of the dates indicated: March 31, 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 millions) U.S. Treasury securities and obligations of U.S. government authorities and agencies $ 8,150 $ 342 $ 8,492 $ 911 $ 7,349 $ 8,260 U.S. corporate public securities 1 0 1 1 0 1 Foreign corporate public securities 0 0 0 0 0 0 Residential mortgage-backed securities 117 23 140 0 139 139 Equity securities 0 0 0 0 0 0 Total securities sold under agreements to repurchase(1) $ 8,268 $ 365 $ 8,633 $ 912 $ 7,488 $ 8,400 __________ (1) The Company did not have any agreements with remaining contractual maturities of thirty days or greater, as of the dates indicated. 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: March 31, 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 millions) U.S. Treasury securities and obligations of U.S. government authorities and agencies $ 94 $ 321 $ 415 $ 87 $ 35 $ 122 Obligations of U.S. states and their political subdivisions 129 0 129 103 0 103 Foreign government bonds 287 0 287 335 0 335 U.S. corporate public securities 2,758 0 2,758 2,961 0 2,961 Foreign corporate public securities 630 0 630 655 0 655 Residential mortgage-backed securities 0 24 24 0 0 0 Equity securities 69 0 69 178 0 178 Total cash collateral for loaned securities(1) $ 3,967 $ 345 $ 4,312 $ 4,319 $ 35 $ 4,354 __________ (1) The Company did not have any agreements with remaining contractual maturities of thirty days or greater, as of the dates indicated.

Variable Interest Entities

Variable Interest Entities	3 Months Ended
	Mar. 31, 2018
Variable Interest Entity, Measure of Activity [Abstract]
Variable Interest Entities	VARIABLE INTEREST ENTITIES In the normal course of its activities, the Company enters into relationships with various special-purpose entities and other entities that are deemed to be variable interest entities (“VIEs”). For additional information, see Note 5 to the Consolidated Financial Statements included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2017. Consolidated Variable Interest Entities The table below reflects the carrying amount and balance sheet caption in which the assets and liabilities of consolidated VIEs are reported. The liabilities primarily comprise obligations under debt instruments issued by the VIEs. The creditors of these VIEs do not have recourse to the Company in excess of the assets contained within the VIEs. Consolidated VIEs for which the Company is the Investment Manager(1)(2) Other Consolidated VIEs(1) March 31, December 31, March 31, December 31, (in millions) Fixed maturities, available-for-sale $ 79 $ 69 $ 291 $ 275 Fixed maturities, held-to-maturity 88 83 858 810 Fixed maturities, trading 1,078 1,623 0 0 Assets supporting experience-rated contractholder liabilities 0 0 9 9 Equity securities 28 28 0 0 Commercial mortgage and other loans 649 617 0 0 Other invested assets 1,368 1,390 68 97 Cash and cash equivalents 140 164 0 0 Accrued investment income 5 7 4 4 Other assets 462 440 151 150 Total assets of consolidated VIEs $ 3,897 $ 4,421 $ 1,381 $ 1,345 Other liabilities $ 340 $ 433 $ 8 $ 0 Notes issued by consolidated VIEs(3) $ 954 $ 1,518 $ 0 $ 0 Total liabilities of consolidated VIEs $ 1,294 $ 1,951 $ 8 $ 0 __________ (1) Prior period amounts have been reclassified to conform to current period presentation. See Note 2 for additional information. (2) Total assets of consolidated VIEs reflect $1,815 million and $1,716 million as of March 31, 2018 and December 31, 2017 , respectively, related to VIEs whose beneficial interests are wholly-owned by consolidated subsidiaries. (3) Recourse is limited to the assets of the respective VIE and does not extend to the general credit of the Company . As of March 31, 2018 and December 31, 2017 , the maturities of these obligations were greater than five years. Unconsolidated Variable Interest Entities The Company has determined that it is not the primary beneficiary of certain VIEs for which it is the investment manager. The Company’s maximum exposure to loss resulting from its relationship with unconsolidated VIEs for which it is the investment manager is limited to its investment in the VIEs, which was $1,177 million and $1,013 million at March 31, 2018 and December 31, 2017 , respectively. These investments are reflected in “Fixed maturities, available-for-sale,” “Fixed maturities, trading,” “Equity securities” and “Other invested assets.” There are no liabilities associated with these unconsolidated VIEs on the Company’s Unaudited Interim Consolidated Statements of Financial Position. In the normal course of its activities, the Company will invest in LPs/LLCs, which include hedge funds, private equity funds and real estate-related funds and may or may not be VIEs. The Company’s maximum exposure to loss on these investments, both VIEs and non-VIEs, is limited to the amount of its investment. The Company classifies these investments as “Other invested assets” and its maximum exposure to loss associated with these entities was $9,286 million and $8,720 million as of March 31, 2018 and December 31, 2017 , respectively. In addition, in the normal course of its activities, the Company will invest in structured investments including VIEs for which it is not the investment manager. These structured investments typically invest in fixed income investments and are managed by third-parties and include asset-backed securities, commercial mortgage-backed securities and residential mortgage-backed securities. The Company’s maximum exposure to loss on these structured investments, both VIEs and non-VIEs, is limited to the amount of its investment. See Note 3 for details regarding the carrying amounts and classification of these assets. The Company has not provided material financial or other support that was not contractually required to these structures. The Company has determined that it is not the primary beneficiary of these structures due to the fact that it does not control these entities.

Derivative Instruments

Derivative Instruments	3 Months Ended
	Mar. 31, 2018
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative Instruments	DERIVATIVE INSTRUMENTS Types of Derivative Instruments and Derivative Strategies The Company utilizes various derivatives 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: to-be-announced (“TBA”) forward contracts, loan commitments, embedded derivatives and synthetic guaranteed investment contracts (“GICs”) For detailed information on these contracts and the related strategies, see Note 21 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 derivatives contracts by the primary underlying risk, 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 non-performance risk (“NPR”). This netting impact results in total derivative assets of $1,219 million and $1,205 million as of March 31, 2018 and December 31, 2017 , respectively, and total derivative liabilities of $1,249 million and $643 million as of March 31, 2018 and December 31, 2017 , respectively, reflected in the Unaudited Interim Consolidated Statements of Financial Position. Primary Underlying Risk /Instrument Type March 31, 2018 December 31, 2017 Gross Fair Value Gross Fair Value Notional Assets Liabilities Notional Assets Liabilities (in millions) Derivatives Designated as Hedge Accounting Instruments: Interest Rate Interest Rate Swaps $ 2,993 $ 190 $ (75 ) $ 3,204 $ 271 $ (88 ) Foreign Currency Foreign Currency Forwards 595 0 (17 ) 545 0 (8 ) Currency/Interest Rate Foreign Currency Swaps 18,882 517 (1,184 ) 17,732 766 (735 ) Total Qualifying Hedges $ 22,470 $ 707 $ (1,276 ) $ 21,481 $ 1,037 $ (831 ) Derivatives Not Qualifying as Hedge Accounting Instruments: Interest Rate Interest Rate Swaps $ 155,142 $ 6,488 $ (3,707 ) $ 158,552 $ 7,958 $ (3,509 ) Interest Rate Futures 20,234 4 0 23,792 25 (1 ) Interest Rate Options 21,724 171 (245 ) 18,456 167 (203 ) Interest Rate Forwards 1,246 6 0 1,498 6 (2 ) Foreign Currency Foreign Currency Forwards 24,761 479 (235 ) 23,905 164 (254 ) Foreign Currency Options 34 0 0 59 0 0 Currency/Interest Rate Foreign Currency Swaps 13,830 486 (653 ) 13,777 822 (414 ) Credit Credit Default Swaps 1,277 13 (5 ) 1,314 21 (5 ) Equity Equity Futures 140 0 0 710 2 (2 ) Equity Options 53,400 636 (605 ) 36,007 588 (364 ) Total Return Swaps 22,336 609 (196 ) 15,558 17 (369 ) Commodity Commodity Futures 12 0 0 0 0 0 Synthetic GICs 76,159 6 0 77,290 0 (1 ) Total Non-Qualifying Derivatives $ 390,295 $ 8,898 $ (5,646 ) $ 370,918 $ 9,770 $ (5,124 ) Total Derivatives(1) $ 412,765 $ 9,605 $ (6,922 ) $ 392,399 $ 10,807 $ (5,955 ) __________ (1) Excludes embedded derivatives and associated reinsurance recoverables which contain multiple underlying risks. The fair value of these embedded derivatives was a net liability of $7,031 million and $8,748 million as of March 31, 2018 and December 31, 2017 , respectively, primarily included in “Future policy benefits.” Most of the Company’s derivatives do not qualify for hedge accounting for various reasons. For example: (i) derivatives that economically hedge embedded derivatives do not qualify for hedge accounting because changes in the fair value of the embedded derivatives are already recorded in net income; (ii) derivatives that are utilized as macro hedges of the Company’s exposure to various risks typically do not qualify for hedge accounting because they do not meet the criteria required under portfolio hedge accounting rules; and (iii) synthetic GIC, which are product standalone derivatives, do not qualify as hedging instruments under hedge accounting rules. 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. March 31, 2018 Gross Amounts of Recognized Financial Instruments Gross Amounts Offset in the Statements of Financial Position Net Amounts Presented in the Statements of Financial Position Financial Instruments/ Collateral(1) Net Amount (in millions) Offsetting of Financial Assets: Derivatives(1) $ 9,537 $ (8,382 ) $ 1,155 $ (756 ) $ 399 Securities purchased under agreement to resell 1,388 0 1,388 (1,388 ) 0 Total assets $ 10,925 $ (8,382 ) $ 2,543 $ (2,144 ) $ 399 Offsetting of Financial Liabilities: Derivatives(1) $ 6,913 $ (5,673 ) $ 1,240 $ (1,240 ) $ 0 Securities sold under agreement to repurchase 8,633 0 8,633 (8,633 ) 0 Total liabilities $ 15,546 $ (5,673 ) $ 9,873 $ (9,873 ) $ 0 December 31, 2017 Gross Amounts of Recognized Financial Instruments Gross Amounts Offset in the Statements of Financial Position Net Amounts Presented in the Statements of Financial Position Financial Net Amount (in millions) Offsetting of Financial Assets: Derivatives(1) $ 10,710 $ (9,600 ) $ 1,110 $ (625 ) $ 485 Securities purchased under agreement to resell 240 0 240 (240 ) 0 Total assets $ 10,950 $ (9,600 ) $ 1,350 $ (865 ) $ 485 Offsetting of Financial Liabilities: Derivatives(1) $ 5,948 $ (5,312 ) $ 636 $ (588 ) $ 48 Securities sold under agreement to repurchase 8,400 0 8,400 (8,400 ) 0 Total liabilities $ 14,348 $ (5,312 ) $ 9,036 $ (8,988 ) $ 48 __________ (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 “—Counterparty Credit Risk” below. 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 Company’s Consolidated Financial Statements included in the Annual Report on Form 10-K for the year ended December 31, 2017 . Cash Flow, Fair Value and Net Investment Hedges The primary derivative instruments used by the Company in its fair value, cash flow and net investment hedge accounting relationships are interest rate swaps, currency swaps and currency forwards. 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 fair value, cash flow or net investment hedge accounting relationships. The following table provides 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 March 31, 2018 Realized Net Other Interest Interest AOCI(1) (in millions) Derivatives Designated as Hedge Accounting Instruments: Fair value hedges Interest Rate $ 17 $ (3 ) $ 0 $ 0 $ (83 ) $ 0 Currency 2 0 0 0 0 0 Total fair value hedges 19 (3 ) 0 0 (83 ) 0 Cash flow hedges Interest Rate 0 0 0 0 0 7 Currency 0 0 0 0 0 (8 ) Currency/Interest Rate 0 47 (91 ) 0 0 (582 ) Total cash flow hedges 0 47 (91 ) 0 0 (583 ) Net investment hedges Currency (2 ) 0 0 0 0 (2 ) Currency/Interest Rate 0 0 0 0 0 0 Total net investment hedges (2 ) 0 0 0 0 (2 ) Derivatives Not Qualifying as Hedge Accounting Instruments: Interest Rate (1,516 ) 0 0 0 0 0 Currency 412 0 1 0 0 0 Currency/Interest Rate (555 ) 0 (1 ) 0 0 0 Credit (5 ) 0 0 0 0 0 Equity 10 0 0 0 0 0 Commodity 0 0 0 0 0 0 Embedded Derivatives 1,979 0 0 0 0 0 Total non-qualifying hedges 325 0 0 0 0 0 Total $ 342 $ 44 $ (91 ) $ 0 $ (83 ) $ (585 ) Three Months Ended March 31, 2017 Realized Net Other Interest Interest AOCI(1) (in millions) Derivatives Designated as Hedge Accounting Instruments: Fair value hedges Interest Rate $ 8 $ (6 ) $ 0 $ 0 $ 0 $ 0 Currency 2 0 0 0 0 0 Total fair value hedges 10 (6 ) 0 0 0 0 Cash flow hedges Interest Rate 0 0 0 (1 ) 0 3 Currency/Interest Rate 0 44 (39 ) 0 0 (201 ) Total cash flow hedges 0 44 (39 ) (1 ) 0 (198 ) Net investment hedges Currency 0 0 0 0 0 (3 ) Currency/Interest Rate 0 0 0 0 0 0 Total net investment hedges 0 0 0 0 0 (3 ) Derivatives Not Qualifying as Hedge Accounting Instruments: Interest Rate (147 ) 0 0 0 0 0 Currency 38 0 (1 ) 0 0 0 Currency/Interest Rate (87 ) 0 0 0 0 0 Credit 10 0 0 0 0 0 Equity (704 ) 0 0 0 0 0 Commodity 0 0 0 0 0 0 Embedded Derivatives 876 0 0 0 0 0 Total non-qualifying hedges (14 ) 0 (1 ) 0 0 0 Total $ (4 ) $ 38 $ (40 ) $ (1 ) $ 0 $ (201 ) __________ (1) Amounts deferred in AOCI. For the three months ended March 31, 2018 , the ineffective portion of derivatives accounted for using hedge accounting was $13 million and for the three months ended March 31, 2017 , the ineffective portion of derivatives accounted for using hedge accounting were 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. In addition, there were no instances in which the Company discontinued fair value hedge accounting due to a hedged firm commitment no longer qualifying as a fair value hedge. Presented below is a rollforward of current period cash flow hedges in AOCI before taxes: (in millions) Balance, December 31, 2017 $ (39 ) Net deferred gains/(losses) on cash flow hedges from January 1 to March 31, 2018 (635 ) Amount reclassified into current period earnings 52 Balance, March 31, 2018 $ (622 ) The changes in fair value of cash flow hedges are deferred in AOCI and are included in “Net unrealized investment gains (losses)” in the Consolidated Statements of Comprehensive Income; these amounts are then reclassified to earnings when the hedged item affects earnings. Using March 31, 2018 values, it is estimated that a pre-tax gain of approximately $157 million will be reclassified from AOCI to earnings during the subsequent twelve months ending March 31, 2019 , offset by amounts pertaining to the hedged items. The Company’s exposure from the qualifying cash flow hedges reflects variability of future cash flows in foreign currency amounts related to both the forecasted transactions and the receipt or payment of interest on existing financial instruments. As of March 31, 2018 , the maximum length of time over which these cash flow hedges are outstanding were 5 years and 40 years respectively. For effective net investment hedges, the amounts, before applicable taxes, recorded in the cumulative translation adjustment account within AOCI were $524 million and $526 million as of March 31, 2018 and December 31, 2017 , respectively. Credit Derivatives Credit derivatives, where the Company has written credit protection on a single name reference, had outstanding notional amounts of $110 million and $ 114 million as of March 31, 2018 and December 31, 2017 , respectively. These credit derivatives are reported at fair value as an asset of $2 million as of both March 31, 2018 and December 31, 2017 . As of March 31, 2018 , the notional amount of these credit derivatives had the following NAIC ratings: $ 37 million in NAIC 1; $ 61 million in NAIC 2; $5 million in NAIC 3; $1 million in NAIC 4; $1 million in NAIC 5; and $5 million in NAIC 6. The Company has also written credit protection on certain index references with notional amounts of $1,022 million as of both March 31, 2018 and December 31, 2017 . These credit derivatives are reported at fair value as an asset of $9 million and $ 18 million as of March 31, 2018 and December 31, 2017 , respectively. As of March 31, 2018 , the notional amount of these credit derivatives had the following NAIC ratings: $ 52 million in NAIC 1; and $970 million in NAIC 3. NAIC designations are based on the lowest rated single name reference included in the index. The Company’s maximum amount at risk under these credit derivatives equals the aforementioned notional amounts and assumes the value of the underlying referenced securities become worthless. These single name credit derivatives have maturities of less than 3 years , while the credit protection on the index references have maturities of less than 29 years . This excludes a credit derivative related to surplus notes issued by a subsidiary of Prudential Insurance as further disclosed below. In addition to writing credit protection, the Company has purchased credit protection using credit derivatives in order to hedge specific credit exposures in the Company’s investment portfolio. As of March 31, 2018 and December 31, 2017 , the Company had $145 million and $178 million of outstanding notional amounts reported at fair value as a liability of $3 million and $5 million , respectively. Counterparty Credit Risk The Company is exposed to credit-related losses in the event of non-performance by counterparties to financial derivative transactions with a positive fair value. The Company manages credit risk by: (i) entering into derivative transactions with highly rated major international financial institutions and other creditworthy counterparties governed by master netting agreements, as applicable; (ii) trading through a central clearing and over-the-counter (“OTC”); (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. In addition, certain of the Company’s derivative agreements contain credit-risk related contingent features; if the credit rating of one of the parties to the derivative agreement is to fall below a certain level, the party with positive fair value could request termination at the then fair value or demand immediate full collateralization from the party whose credit rating fell and is in a net liability position. As of March 31, 2018, there were no net liability derivative positions with counterparties with credit risk-related contingent features; as such, all derivatives have been appropriately collateralized by the Company or the counterparty in accordance with the terms of the derivative agreements.

Fair Value of Assets and Liabil

Fair Value of Assets and Liabilities	3 Months Ended
	Mar. 31, 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 Company’s valuation methodologies for assets and liabilities measured at fair value and the fair value hierarchy, see Note 20 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 March 31, 2018 Level 1 Level 2 Level 3 Netting(1) Total (in millions) Fixed maturities, available-for-sale: U.S. Treasury securities and obligations of U.S. government authorities and agencies $ 0 $ 24,962 $ 59 $ $ 25,021 Obligations of U.S. states and their political subdivisions 0 10,290 5 10,295 Foreign government bonds 0 110,197 128 110,325 U.S. corporate public securities 0 85,718 108 85,826 U.S. corporate private securities(2) 0 31,413 1,830 33,243 Foreign corporate public securities 0 29,110 68 29,178 Foreign corporate private securities 0 23,914 729 24,643 Asset-backed securities(3) 0 6,063 6,754 12,817 Commercial mortgage-backed securities 0 12,820 43 12,863 Residential mortgage-backed securities 0 3,317 102 3,419 Subtotal 0 337,804 9,826 347,630 Assets supporting experience-rated contractholder liabilities: U.S. Treasury securities and obligations of U.S. government authorities and agencies 0 199 0 199 Obligations of U.S. states and their political subdivisions 0 201 0 201 Foreign government bonds 0 884 220 1,104 Corporate securities 0 13,159 468 13,627 Asset-backed securities(3) 0 762 664 1,426 Commercial mortgage-backed securities 0 2,369 0 2,369 Residential mortgage-backed securities 0 908 0 908 Equity securities 1,390 257 5 1,652 All other(5) 0 16 7 23 Subtotal 1,390 18,755 1,364 21,509 Fixed maturities trading 0 2,681 204 2,885 Equity securities 5,865 639 785 7,289 Commercial mortgage and other loans 0 298 0 298 Other invested assets(6) 4 9,584 144 (8,382 ) 1,350 Short-term investments 2,693 1,590 10 4,293 Cash equivalents 1,771 4,824 0 6,595 Other assets 0 3 0 3 Separate account assets(7)(8) 43,896 228,810 2,360 275,066 Total assets $ 55,619 $ 604,988 $ 14,693 $ (8,382 ) $ 666,918 Future policy benefits(9) $ 0 $ 0 $ 6,981 $ $ 6,981 Other liabilities 5 6,922 56 (5,673 ) 1,310 Notes issued by consolidated VIEs 0 0 612 612 Total liabilities $ 5 $ 6,922 $ 7,649 $ (5,673 ) $ 8,903 As of December 31, 2017 Level 1 Level 2 Level 3 Netting(1) Total (in millions) Fixed maturities, available-for-sale: U.S. Treasury securities and obligations of U.S. government authorities and agencies $ 0 $ 26,086 $ 52 $ $ 26,138 Obligations of U.S. states and their political subdivisions 0 10,466 5 10,471 Foreign government bonds 0 103,271 148 103,419 U.S. corporate public securities 0 90,115 109 90,224 U.S. corporate private securities(2) 0 31,845 1,889 33,734 Foreign corporate public securities 0 29,329 79 29,408 Foreign corporate private securities 0 23,528 699 24,227 Asset-backed securities(3) 0 5,629 6,604 12,233 Commercial mortgage-backed securities 0 13,268 13 13,281 Residential mortgage-backed securities 0 3,547 98 3,645 Subtotal 0 337,084 9,696 346,780 Assets supporting experience-rated contractholder liabilities(4): U.S. Treasury securities and obligations of U.S. government authorities and agencies 0 201 0 201 Obligations of U.S. states and their political subdivisions 0 208 0 208 Foreign government bonds 0 834 223 1,057 Corporate securities 0 13,611 462 14,073 Asset-backed securities(3) 0 670 722 1,392 Commercial mortgage-backed securities 0 2,311 0 2,311 Residential mortgage-backed securities 0 965 1 966 Equity securities 1,381 258 4 1,643 All other(5) 25 105 7 137 Subtotal 1,406 19,163 1,419 21,988 Fixed maturities trading(4) 0 3,351 156 3,507 Equity securities(4) 5,978 556 795 7,329 Commercial mortgage and other loans 0 593 0 593 Other invested assets(4)(6) 32 10,768 137 (9,600 ) 1,337 Short-term investments(4) 3,931 1,850 8 5,789 Cash equivalents(4) 1,900 6,398 0 8,298 Other assets 0 1 13 14 Separate account assets(7)(8) 45,397 232,874 2,122 280,393 Total assets $ 58,644 $ 612,638 $ 14,346 $ (9,600 ) $ 676,028 Future policy benefits(9) $ 0 $ 0 $ 8,720 $ $ 8,720 Other liabilities 4 5,946 50 (5,312 ) 688 Notes issued by consolidated VIEs 0 0 1,196 1,196 Total liabilities $ 4 $ 5,946 $ 9,966 $ (5,312 ) $ 10,604 __________ (1) “Netting” amounts represent cash collateral of $2,709 million and $4,288 million as of March 31, 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) Excludes notes with both fair value and carrying amount of $2,846 million and $2,660 million , as of March 31, 2018 and December 31, 2017 , respectively, which have been offset with the associated payables under a netting agreement. (3) Includes credit-tranched securities collateralized by syndicated bank loans, sub-prime mortgages, auto loans, credit cards, education loans and other asset types. (4) Prior period amounts have been reclassified to conform to current period presentation. See Note 2 for details. (5) All other represents cash equivalents and short-term investments. (6) 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 March 31, 2018 and December 31, 2017 , the fair values of such investments were $4,297 million and $1,969 million respectively. (7) Separate account assets included in the fair value hierarchy exclude investments in entities that calculate net asset value 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 other invested assets, for which fair value is measured at NAV per share (or its equivalent). At March 31, 2018 and December 31, 2017 , the fair value of such investments was $25,519 million and $26,224 million , respectively. (8) 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. (9) As of March 31, 2018 , the net embedded derivative liability position of $6.9 billion includes $1.1 billion of embedded derivatives in an asset position and $8.0 billion of embedded derivatives in a liability position. As of December 31, 2017 , the net embedded derivative liability position of $8.7 billion includes $0.9 billion of embedded derivatives in an asset position and $9.6 billion of embedded derivatives in a liability position. 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. The following table presents the transfers between Level 1 and Level 2 for dates indicated below: Three Months Ended March 31, 2018 2017 (in millions) Transferred from Level 1 to Level 2 $ 171 $ 46 Transferred from Level 2 to Level 1 $ 7 $ 57 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 March 31, 2018 Fair Value Valuation Techniques Unobservable Inputs Minimum Maximum Weighted Average Impact of Increase in Input on Fair Value(1) (in millions) Assets: Corporate securities(2) $ 1,377 Discounted cash flow Discount rate 0.64% - 20% 7.41% Decrease Market comparables EBITDA multiples(3) 4.5X 7.6X 6.2X Increase Liquidation Liquidation value 13.31% - 13.70% 13.54% Increase Separate account assets-commercial mortgage loans(4) $ 798 Discounted cash flow Spread 1.02% - 2.69% 1.15% Decrease Liabilities: Future policy benefits(5) $ 6,981 Discounted cash flow Lapse rate(6) 1% - 12% Decrease Spread over LIBOR(7) 0.24% - 1.21% Decrease Utilization rate(8) 52% - 97% Increase Withdrawal rate See table footnote (9) below. Mortality rate(10) 0% - 14% Decrease Equity volatility curve 16% - 24% 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 millions) Assets: Corporate securities(2) $ 1,352 Discounted cash flow Discount rate 0.65% - 22% 7.20% Decrease Market comparables EBITDA multiples(3) 7.4X - 7.4X 7.4X Increase Liquidation Liquidation value 13.10% - 25.00% 14.68% Increase Separate account assets-commercial mortgage loans(4) $ 821 Discounted cash flow Spread 1.08% - 2.78% 1.20% Decrease Liabilities: Future policy benefits(5) $ 8,720 Discounted cash flow Lapse rate(6) 1% - 12% Decrease Spread over LIBOR(7) 0.12% - 1.10% Decrease Utilization rate(8) 52% - 97% Increase Withdrawal rate See table footnote (9) below. Mortality rate(10) 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, assets supporting experience-rated contractholder liabilities and fixed maturities trading. (3) Represents multiples of earnings before interest, taxes, depreciation and amortization (“EBITDA”), and are amounts used when the Company has determined that market participants would use such multiples when valuing the investments. (4) Changes in the fair value of separate account assets are borne by customers and thus are offset by changes in separate account liabilities on the Company’s Unaudited Interim Consolidated Statements of Financial Position. As a result, changes in value associated with these investments are not reflected in the Company’s Unaudited Interim Consolidated Statements of Operations. (5) 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. (6) 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. (7) 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. (8) 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. (9) 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 March 31, 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%. (10) Range reflects the mortality rate for the vast majority of business with living benefits, with policyholders ranging from 35 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 20 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. Transfers into Level 3 are generally the result of unobservable inputs utilized within valuation methodologies or the use of indicative broker quotes for assets that were previously valued using observable inputs. Transfers out of Level 3 are generally due to the use of observable inputs in valuation methodologies as well as the availability of pricing service information for certain assets that the Company can validate. For further information on valuation processes, see Note 20 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 March 31, 2018(1) Fixed Maturities Available-For-Sale U.S. government U.S. states Foreign government Corporate securities(2) Structured securities(3) (in millions) Fair Value, beginning of period $ 52 $ 5 $ 148 $ 2,776 $ 6,715 Total gains (losses) (realized/unrealized): Included in earnings: Realized investment gains (losses), net 0 0 0 (7 ) 13 Included in other comprehensive income (loss) 0 0 0 16 (30 ) Net investment income 0 0 0 2 2 Purchases 7 0 0 118 1,548 Sales 0 0 0 (1 ) (66 ) Issuances 0 0 0 0 0 Settlements 0 0 0 (169 ) (649 ) Foreign currency translation 0 0 1 12 26 Other(6) 0 0 0 0 4 Transfers into Level 3(7) 0 0 5 60 1,071 Transfers out of Level 3(7) 0 0 (26 ) (72 ) (1,735 ) Fair Value, end of period $ 59 $ 5 $ 128 $ 2,735 $ 6,899 Unrealized gains (losses) for assets still held(8): Included in earnings: Realized investment gains (losses), net $ 0 $ 0 $ 0 $ (9 ) $ 0 Three Months Ended March 31, 2018(1) Assets Supporting Experience-Rated Contractholder Liabilities Foreign government Corporate securities(2) Structured securities(3) Equity securities All other activity (in millions) Fair Value, beginning of period $ 223 $ 462 $ 722 $ 4 $ 7 Total gains (losses) (realized/unrealized): Included in earnings: Realized investment gains (losses), net 0 0 0 0 0 Other income (4 ) 1 0 1 0 Net investment income 1 0 0 0 0 Purchases 0 24 3 0 19 Sales 0 0 0 0 0 Issuances 0 0 0 0 0 Settlements 0 (18 ) (13 ) 0 (19 ) Foreign currency translation 0 0 0 0 0 Other(6) 0 0 0 0 0 Transfers into Level 3(7) 0 0 28 0 0 Transfers out of Level 3(7) 0 (1 ) (76 ) 0 0 Fair Value, end of period $ 220 $ 468 $ 664 $ 5 $ 7 Unrealized gains (losses) for assets still held(8): Included in earnings: Realized investment gains (losses), net $ 0 $ 0 $ 0 $ 0 $ 0 Other income $ (4 ) $ 0 $ 0 $ 1 $ 0 Three Months Ended March 31, 2018(1) Fixed maturities trading Equity securities Other invested assets Short-term investments Cash equivalents (in millions) Fair Value, beginning of period $ 156 $ 795 $ 137 $ 8 $ 0 Total gains (losses) (realized/unrealized): Included in earnings: Realized investment gains (losses), net 0 0 8 (1 ) 0 Other income (2 ) 14 0 0 0 Included in other comprehensive income (loss) 0 0 0 0 0 Net investment income 0 0 0 0 0 Purchases 40 7 1 14 0 Sales (4 ) (17 ) 0 0 0 Issuances 0 0 0 0 0 Settlements 0 (37 ) 0 (12 ) 0 Foreign currency translation 5 21 0 1 0 Other(6) 0 5 (2 ) 0 0 Transfers into Level 3(7) 11 0 0 0 0 Transfers out of Level 3(7) (2 ) (3 ) 0 0 0 Fair Value, end of period $ 204 $ 785 $ 144 $ 10 $ 0 Unrealized gains (losses) for assets still held(8): Included in earnings: Realized investment gains (losses), net $ 0 $ 0 $ 1 $ (1 ) $ 0 Other income $ 4 $ 13 $ 0 $ 0 $ 0 Three Months Ended March 31, 2018(1) Other Separate account assets(4) Future policy benefits Other liabilities Notes issued by consolidated VIEs (in millions) Fair Value, beginning of period $ 13 $ 2,122 $ (8,720 ) $ (50 ) $ (1,196 ) Total gains (losses) (realized/unrealized): Included in earnings: Realized investment gains (losses), net (13 ) 0 2,026 (19 ) (3 ) Other Income 0 0 0 0 0 Interest credited to policyholders’ account balances 0 (33 ) 0 0 0 Net investment income 0 0 0 0 0 Purchases 0 237 0 10 0 Sales 0 (8 ) 0 0 0 Issuances 0 0 (287 ) 0 0 Settlements 0 (121 ) 0 2 0 Foreign currency translation 0 0 0 0 0 Other(6) 0 0 0 1 587 Transfers into Level 3(7) 0 195 0 0 0 Transfers out of Level 3(7) 0 (32 ) 0 0 0 Fair Value, end of period $ 0 $ 2,360 $ (6,981 ) $ (56 ) $ (612 ) Unrealized gains (losses) for assets/liabilities still held(8): Included in earnings: Realized investment gains (losses), net $ (13 ) $ 0 $ 1,937 $ (13 ) $ (3 ) Other income $ 0 $ 0 $ 0 $ 0 $ 0 Interest credited to policyholders’ account balances $ 0 $ (26 ) $ 0 $ 0 $ 0 Three Months Ended March 31, 2017 Fixed Maturities Available-For-Sale U.S. U.S. Foreign Corporate securities(2) Structured securities(3) (in millions) Fair Value, beginning of period $ 0 $ 5 $ 124 $ 2,173 $ 4,555 Total gains (losses) (realized/unrealized): Included in earnings: Realized investment gains (losses), net 0 0 0 44 2 Included in other comprehensive income (loss) 0 0 0 13 0 Net investment income 0 0 0 9 3 Purchases 0 0 1 34 782 Sales 0 0 0 (141 ) (10 ) Issuances 0 0 0 0 0 Settlements 0 0 0 (59 ) (420 ) Foreign currency translation 0 0 5 9 12 Other(6) 10 0 0 (10 ) (1 ) Transfers into Level 3(7) 0 0 7 98 1,647 Transfers out of Level 3(7) 0 0 (1 ) (59 ) (659 ) Fair Value, end of period $ 10 $ 5 $ 136 $ 2,111 $ 5,911 Unrealized gains (losses) for assets still held(8): Included in earnings: Realized investment gains (losses), net $ 0 $ 0 $ 0 $ (8 ) $ 0 Three Months Ended March 31, 2017 Assets Supporting Experience-Rated Contractholder Liabilities(5) Foreign Corporate securities(2) Structured securities(3) (in millions) Fair Value, beginning of period $ 227 $ 154 $ 290 Total gains (losses) (realized/unrealized): Included in earnings: Realized investment gains (losses), net 0 0 0 Other income (1 ) 4 0 Net investment income 1 0 0 Purchases 0 31 190 Sales 0 (2 ) 0 Issuances 0 0 0 Settlements 0 (30 ) (8 ) Foreign currency translation 0 0 0 Other(6) 0 0 0 Transfers into Level 3(7) 0 21 233 Transfers out of Level 3(7) 0 (4 ) (29 ) Fair Value, end of period $ 227 $ 174 $ 676 Unrealized gains (losses) for assets still held(8): Included in earnings: Realized investment gains (losses), net $ 0 $ 0 $ 0 Other income $ (1 ) $ 2 $ 0 Three Months Ended March 31, 2017 Fixed maturities trading(5) Equity Other Short-term Cash equivalents (in millions) Fair Value, beginning of period $ 76 $ 752 $ 8 $ 1 $ 0 Total gains (losses) (realized/unrealized): Included in earnings: Realized investment gains (losses), net 0 0 0 0 0 Other income (1 ) 21 0 0 0 Included in other comprehensive income (loss) 0 11 0 0 0 Net investment income 0 0 0 0 2 Purchases 15 22 0 0 0 Sales (1 ) (28 ) 0 0 0 Issuances 0 0 0 0 0 Settlements (10 ) (6 ) 0 0 0 Foreign currency translation 1 9 0 0 0 Other(6) 1 0 71 0 4 Transfers into Level 3(7) 26 31 0 0 0 Transfers out of Level 3(7) (1 ) (1 ) 0 0 0 Fair Value, end of period $ 106 $ 811 $ 79 $ 1 $ 6 Unrealized gains (losses) for assets/liabilities still held(8): Included in earnings: Realized investment gains (losses), net $ 0 $ 0 $ (4 ) $ 0 0 Other income $ (1 ) $ 21 $ 0 $ 0 0 Three Months Ended March 31, 2017 Other Separate Future Other Notes issued by (in millions) Fair Value, beginning of period $ 0 $ 1,849 $ (8,238 ) $ (22 ) $ (1,839 ) Total gains (losses) (realized/unrealized): Included in earnings: Realized investment gains (losses), net (8 ) 0 875 (6 ) (15 ) Other Income 0 0 0 0 0 Interest credited to policyholders’ account balances 0 24 0 0 0 Net investment income 0 0 0 0 0 Purchases 8 155 0 0 0 Sales 0 (4 ) 0 0 0 Issuances 0 0 (275 ) 0 0 Settlements 0 (206 ) 0 1 0 Foreign currency translation 0 0 (2 ) 0 0 Other(6) 0 0 0 0 0 Transfers into Level 3(7) 0 191 0 0 0 Transfers out of Level 3(7) 0 (34 ) 0 0 0 Fair Value, end of period $ 0 $ 1,975 $ (7,640 ) $ (27 ) $ (1,854 ) Unrealized gains (losses) for assets/liabilities still held(8): Included in earnings: Realized investment gains (losses), net $ (8 ) $ 0 $ 813 $ (6 ) $ (15 ) Other Income $ 0 $ 0 $ 0 $ 0 $ 0 Interest credited to policyholders’ account balances $ 0 $ 23 $ 0 $ 0 $ 0 __________ (1) Current period amounts include one additional month of activity related to the elimination of Gibraltar Life’s reporting lag. (2) 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. (3) Includes asset-backed, commercial mortgage-backed and residential mortgage-backed securities. Prior period amounts were aggregated to conform to current period presentation. (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) Prior period amounts have been reclassified to conform to current period presentation. See Note 2 for details. (6) Other, for the period ended March 31, 2018 , primarily represents deconsolidation of a VIE and reclassifications of certain assets between reporting categories. Other, for the period ended March 31, 2017 , primarily represents consolidations of VIE and reclassifications of certain assets between reporting categories. (7) Transfers into or out of Level 3 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. (8) 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. Derivative Fair Value Information The following tables present the balances of derivative assets and liabilities measured at fair value on a recurring basis, as of the date indicated, by primary underlying risk. These tables include NPR and exclude embedded derivatives and associated reinsurance recoverables. The derivative assets and liabilities shown below are included in “Other invested assets” or “Other liabilities” in the tables contained within the sections “—Assets and Liabilities by Hierarchy Level” and “—Changes in Level 3 Assets and Liabilities,” above. As of March 31, 2018 Level 1 Level 2 Level 3 Netting(1) Total (in millions) Derivative Assets: Interest Rate $ 4 $ 6,849 $ 7 $ $ 6,860 Currency 0 480 0 480 Credit 0 13 0 13 Currency/Interest Rate 0 1,003 0 1,003 Equity 0 1,239 6 1,245 Commodity 0 0 0 0 Netting(1) (8,382 ) (8,382 ) Total derivative assets $ 4 $ 9,584 $ 13 $ (8,382 ) $ 1,219 Derivative Liabilities: Interest Rate $ 0 $ 4,024 $ 1 $ $ 4,025 Currency 0 253 0 253 Credit 0 5 0 5 Currency/Interest Rate 0 1,837 0 1,837 Equity 0 802 0 802 Commodity 0 0 0 0 Netting(1) (5,673 ) (5,673 ) Total derivative liabilities $ 0 $ 6,921 $ 1 $ (5,673 ) $ 1,249 As of December 31, 2017 Level 1 Level 2 Level 3 Netting(1) Total (in millions) Derivative Assets: Interest Rate $ 25 $ 8,399 $ 0 $ $ 8,424 Currency 0 165 0 165 Credit 0 21 0 21 Currency/Interest Rate 0 1,588 0 1,588 Equity 2 595 10 607 Commodity 0 0 0 0 Netting(1) (9,600 ) (9,600 ) Total derivative assets $ 27 $ 10,768 $ 10 $ (9,600 ) $ 1,205 Derivative Liabilities: Interest Rate $ 1 $ 3,800 $ 3 $ $ 3,804 Currency 0 262 0 262 Credit 0 5 0 5 Currency/Interest Rate 0 1,149 0 1,149 Equity 2 733 0 735 Commodity 0 0 0 0 Netting(1) (5,312 ) (5,312 ) Total derivative liabilities $ 3 $ 5,949 $ 3 $ (5,312 ) $ 643 __________ (1) “Netting” amounts represent cash collateral and the impact of offsetting asset and liability positions held with the same counterparty, subject to master netting agreement. Changes in Level 3 derivative assets and liabilities —The following tables provide a summary of the changes in fair value of Level 3 derivative 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. Three Months Ended Net Derivative- Equity Net Derivative- Interest Rate (in millions) Fair Value, beginning of period $ 10 $ (3 ) Total gains (losses) (realized/unrealized): Included in earnings: Realized investment gains (losses), net 0 9 Other income 0 0 Purchases 0 0 Sales 0 0 Issuances 0 0 Settlements 0 0 Foreign currency translation 0 0 Other(1) (5 ) 0 Transfers into Level 3(2) 1 0 Transfers out of Level 3(2) 0 0 Fair Value, end of period $ 6 $ 6 Unrealized gains (losses) for assets still held: Included in earnings: Realized investment gains (losses), net $ 1 $ 8 Other income $ 0 $ 0 Three Months Ended Net Derivative- Equity Net Derivative- Interest Rate (in millions) Fair Value, beginning of period $ 0 $ 4 Total gains (losses) (realized/unrealized): Included in earnings: Realized investment gains (losses), net 0 (1 ) Other income 0 0 Purchases 0 0 Sales 0 0 Issuances 0 0 Settlements 0 0 Other 0 0 Transfers into Level 3(2) 0 0 Transfers out of Level 3(2) 0 0 Fair Value, end of period $ 0 $ 3 Unrealized gains (losses) for assets still held: Included in earnings: Realized investment gains (losses), net $ 0 $ (1 ) Other income $ 0 $ 0 __________ (1) Represents conversion of warrants to equity shares. (2) Transfers into or out of Level 3 are generally reported at the value as of the beginning of the quarter in which the transfer occurs. Nonrecurring Fair Value Measurements —The following table represents information for assets measured at fair value on a nonrecurring basis. The fair value measurement is nonrecurring as these assets are measured at fair value only when there is an evidence of impairment. Assets included in the table are those that were impaired during the respective reporting periods and that are still held as of the reporting date. The estimated fair values for these amounts were determined using significant unobservable inputs (Level 3). Three Months Ended 2018 2017 (in millions) Realized investment gains (losses) net: Commercial mortgage loans(1) $ 0 $ 0 Mortgage servicing rights(2) $ 2 $ 2 Cost method investments(3) $ 0 $ (10 ) March 31, 2018 December 31, 2017 (in millions) Carrying value after measurement as of period end: Commercial mortgage loans(1) $ 63 $ 64 Mortgage servicing rights(2) $ 62 $ 60 Cost method investments(3) $ 0 $ 150 __________ (1) Commercial mortgage loans are valued based on discounted cash flows utilizing market rates or the fair value of the underlying real estate collateral. (2) Mortgage servicing rights are valued using a discounted cash flow model. The model incorporates assumptions for servicing revenues, which are adjusted for expected prepayments, delinquency rates, escrow deposit income and estimated loan servicing expenses. The discount rates incorporated into the model are determined based on the estimated returns a market participant would require for this business plus a liquidity and risk premium. This estimate includes available relevant data from any active market sales of mortgage servicing rights. (3) Due to the adoption of ASU 2016-01 effective January 1, 2018, LPs/LLCs (formerly accounted for under the cost method) are carried at fair value at each reporting date with changes in fair value reported in “Other income”. Therefore, these assets are no longer reported in this table because they are no longer carried at fair value on a non-recurring basis. Fair Value Option The fair value option allows the Company to elect fair value as an alte

Closed Block

Closed Block	3 Months Ended
	Mar. 31, 2018
Closed Block Disclosure [Abstract]
Closed Block	CLOSED BLOCK On December 18, 2001, the date of demutualization, Prudential Insurance established a closed block for certain in force participating insurance policies and annuity products, along with corresponding assets used for the payment of benefits and policyholders’ dividends on these products, (collectively the “Closed Block”), and ceased offering these participating products. The recorded assets and liabilities were allocated to the Closed Block at their historical carrying amounts. The Closed Block forms the principal component of the Closed Block division. For more information on the Closed Block, see Note 12 to the Company’s Consolidated Financial Statements included in the Annual Report on Form 10-K for the year ended December 31, 2017. As of March 31, 2018 and December 31, 2017 , the Company recognized a policyholder dividend obligation of $2,621 million and $1,790 million , respectively, to Closed Block policyholders for the excess of actual cumulative earnings over expected cumulative earnings. Additionally, accumulated net unrealized investment gains that have arisen subsequent to the establishment of the Closed Block have been reflected as a policyholder dividend obligation of $1,812 million and $3,656 million at March 31, 2018 and December 31, 2017 , respectively, to be paid to Closed Block policyholders unless offset by future experience, with a corresponding amount reported in AOCI. Closed Block liabilities and assets designated to the Closed Block, as well as maximum future earnings to be recognized from these liabilities and assets, are as follows: March 31, December 31, (in millions) Closed Block liabilities Future policy benefits $ 48,631 $ 48,870 Policyholders’ dividends payable 860 829 Policyholders’ dividend obligation 4,433 5,446 Policyholders’ account balances 5,120 5,146 Other Closed Block liabilities 5,165 5,070 Total Closed Block liabilities 64,209 65,361 Closed Block assets Fixed maturities, available-for-sale, at fair value 39,858 41,043 Fixed maturities, trading, at fair value(1) 205 339 Equity securities, at fair value(1) 2,309 2,340 Commercial mortgage and other loans 9,027 9,017 Policy loans 4,495 4,543 Other invested assets(1) 3,407 3,159 Short-term investments 413 632 Total investments 59,714 61,073 Cash and cash equivalents 1,020 789 Accrued investment income 491 474 Other Closed Block assets 222 249 Total Closed Block assets 61,447 62,585 Excess of reported Closed Block liabilities over Closed Block assets 2,762 2,776 Portion of above representing accumulated other comprehensive income: Net unrealized investment gains (losses) 1,777 3,627 Allocated to policyholder dividend obligation (1,812 ) (3,656 ) Future earnings to be recognized from Closed Block assets and Closed Block liabilities $ 2,727 $ 2,747 __________ (1) Prior period amounts have been reclassified to conform to current period presentation. See Note 2 for details. Information regarding the policyholder dividend obligation is as follows: Three Months Ended (in millions) Balance, December 31, 2017 $ 5,446 Cumulative-effect adjustment from the adoption of ASU 2016-01(1) 157 Impact from earnings allocable to policyholder dividend obligation (139 ) Change in net unrealized investment gains (losses) allocated to policyholder dividend obligation (1,031 ) Balance, March 31, 2018 $ 4,433 __________ (1) See Note 2 for details. Closed Block revenues and benefits and expenses are as follows for the periods indicated: Three Months Ended 2018 2017 (in millions) Revenues Premiums $ 551 $ 605 Net investment income 597 650 Realized investment gains (losses), net (2 ) 273 Other income (loss) 21 34 Total Closed Block revenues 1,167 1,562 Benefits and Expenses Policyholders’ benefits 727 789 Interest credited to policyholders’ account balances 33 33 Dividends to policyholders 308 593 General and administrative expenses 93 97 Total Closed Block benefits and expenses 1,161 1,512 Closed Block revenues, net of Closed Block benefits and expenses, before income taxes 6 50 Income tax expense (benefit) (9 ) 37 Closed Block revenues, net of Closed Block benefits and expenses and income taxes $ 15 $ 13

Income Taxes

Income Taxes	3 Months Ended
	Mar. 31, 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 “Total income tax expense” divided by projected “Income before income taxes and equity in earnings of operating joint ventures.” Taxes attributable to operating joint ventures 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 expense of $352 million , or 20.8% of income (loss) before income taxes and equity in earnings of operating joint ventures, in the first three months of 2018, compared to $395 million , or 22.7% , in the first three months of 2017. The Company’s current effective tax rates differed from the U.S. statutory rate of 21% primarily due to non-taxable investment income, tax credits and foreign earnings taxed at higher rates than the U.S. statutory rate. The Company’s prior effective tax rates differed from the U.S statutory rate in effect at that time of 35% primarily due to non-taxable investment income, tax credits and foreign earnings taxed at lower rates than the U.S. statutory rate. U.S. Tax Cuts and Jobs Act of 2017 (“Tax 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 $2,880 million tax benefit in “Total income tax expense (benefit)” in the Company’s Consolidated Statements of Operations for the year ended December 31, 2017. In accordance with SEC Staff Accounting Bulletin 118, the Company recorded the effects of the Tax Act of 2017 as 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 Internal Revenue Service (“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 quarter of 2018, the Company recognized additional refinements of our provisional estimates. The cumulative financial statement impact related to the Tax Act of 2017 as of March 31, 2018 was as follows: Twelve Months Ended December 31, 2017 Three Months Ended March 31, 2018 Total (in millions) Deferred tax revaluation from 35% to 21% $ (1,592 ) $ 4 $ (1,588 ) Adoption of modified territorial system (1,785 ) (24 ) (1,809 ) Deemed repatriation 497 0 497 Total provision for income tax expense (benefit) $ (2,880 ) $ (20 ) $ (2,900 )

Short-Term and Long-Term Debt

Short-Term and Long-Term Debt	3 Months Ended
	Mar. 31, 2018
Debt Disclosure [Abstract]
Short-Term and Long-Term Debt	SHORT-TERM AND LONG-TERM DEBT Short-term Debt The table below presents the Company’s short-term debt as of the dates indicated: March 31, 2018 December 31, 2017 ($ in millions) Commercial paper: Prudential Financial $ 25 $ 50 Prudential Funding, LLC 496 500 Subtotal commercial paper 521 550 Current portion of long-term debt(1) 862 830 Total short-term debt(2) $ 1,383 $ 1,380 Supplemental short-term debt information: Portion of commercial paper borrowings due overnight $ 85 $ 277 Daily average commercial paper outstanding $ 1,179 $ 1,110 Weighted average maturity of outstanding commercial paper, in days 20 22 Weighted average interest rate on outstanding short-term debt(3) 1.47 % 0.99 % __________ (1) Includes $32 million that has recourse only to real estate investment property at March 31, 2018. (2) Includes Prudential Financial debt of $855 million and $880 million at March 31, 2018 and December 31, 2017 , respectively. (3) Excludes the current portion of long-term debt. Prudential Financial and certain subsidiaries have access to other sources of liquidity, including: membership in the Federal Home Loan Banks, commercial paper programs and a contingent financing facility in the form of a put option agreement. The Company also maintains syndicated, unsecured committed credit facilities as an alternative source of liquidity. At March 31, 2018 , no amounts were drawn on the credit facilities. For additional information on these alternative sources of liquidity, see Note 14 to the Consolidated Financial Statements included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2017. Long-term Debt The table below presents the Company’s long-term debt as of the dates indicated: March 31, 2018 December 31, 2017 (in millions) Fixed-rate notes: Surplus notes $ 841 $ 840 Surplus notes subject to set-off arrangements(1) 5,499 5,187 Senior notes 9,876 8,882 Mortgage debt(2) 244 226 Floating-rate notes: Surplus notes 0 0 Surplus notes subject to set-off arrangements(1) 2,100 2,100 Senior notes 29 29 Mortgage debt(3) 526 573 Junior subordinated notes(4) 6,627 6,622 Subtotal 25,742 24,459 Less: assets under set-off arrangements(1) 7,599 7,287 Total long-term debt(5) $ 18,143 $ 17,172 __________ (1) The surplus notes have corresponding assets where rights to set-off exist, thereby reducing the amount of surplus notes included in long-term debt. (2) Includes $109 million and $107 million of debt denominated in foreign currency at March 31, 2018 and December 31, 2017 , respectively. (3) Includes $222 million and $245 million of debt denominated in foreign currency at March 31, 2018 and December 31, 2017 , respectively. (4) Includes Prudential Financial debt of $6,568 million and subsidiary debt of $59 million denominated in foreign currency at March 31, 2018. (5) Includes Prudential Financial debt of $16,301 million and $15,304 million at March 31, 2018 and December 31, 2017 , respectively. At March 31, 2018 and December 31, 2017 , the Company was in compliance with all debt covenants related to the borrowings in the table above. Surplus Notes During the first quarter of 2018 , the Company established a new $1.6 billion captive financing facility to finance non-economic reserves required under Guideline XXX. Similar to the Company’s other captive financing facilities, a captive reinsurance subsidiary issues surplus notes under the facility in exchange for credit-linked notes issued by a special-purpose affiliate that are held to support non-economic reserves. The credit-linked notes are redeemable for cash upon the occurrence of a liquidity stress event affecting the captive and external counterparties have agreed to fund these payments. As of March 31, 2018 , $100 million of surplus notes were outstanding under the facility and no credit-linked note payments have been required. Because valid rights of set-off exist, interest and principal payments on the surplus notes and on the credit-linked notes are settled on a net basis, and the surplus notes are reflected in the Company’s total consolidated borrowings on a net basis. Senior Notes Medium-Term Notes. Prudential Financial maintains a medium-term notes program under its shelf registration statement with an authorized issuance capacity of $20.0 billion . As of March 31, 2018 , the outstanding balance of the Company’s medium-term notes was $8.7 billion , an increase of $1 billion from December 31, 2017 . The increase was due to the issuance of $600 million of notes with an interest rate of 3.878% maturing in March 2028 and $400 million of notes with an interest rate of 4.418% maturing in March 2048. Mortgage Debt. As of March 31, 2018 , the Company’s subsidiaries had mortgage debt of $802 million that has recourse only to real estate property held for investment by those subsidiaries. This represents an increase of $3 million from December 31, 2017 , due to new borrowings of $23 million and $7 million from foreign currency exchange rate fluctuations, partially offset by $27 million of prepayment activity.

Employee Benefit Plans

Employee Benefit Plans	3 Months Ended
	Mar. 31, 2018
Retirement Benefits [Abstract]
Employee Benefit Plans	EMPLOYEE BENEFIT PLANS Pension and Other Postretirement Plans The Company has funded and non-funded non-contributory defined benefit pension plans (“Pension Benefits”), which cover substantially all of its employees. For some employees, benefits are based on final average earnings and length of service, while benefits for other employees are based on an account balance that takes into consideration age, service and earnings during their career. The Company provides certain health care and life insurance benefits for its retired employees, their beneficiaries and covered dependents (“Other Postretirement Benefits”). The health care plan is contributory; the life insurance plan is non-contributory. Substantially all of the Company’s U.S. employees may become eligible to receive Other Postretirement Benefits if they retire after age 55 with at least 10 years of service or under certain circumstances after age 50 with at least 20 years of continuous service. Net periodic (benefit) cost included in “General and administrative expenses” includes the following components: Three Months Ended March 31, Pension Benefits Other Postretirement Benefits 2018 2017 2018 2017 (in millions) Components of net periodic (benefit) cost Service cost $ 79 $ 71 $ 6 $ 5 Interest cost 112 119 18 20 Expected return on plan assets (204 ) (195 ) (27 ) (25 ) Amortization of prior service cost (1 ) (1 ) 0 0 Amortization of actuarial (gain) loss, net 53 48 4 9 Settlements 0 0 0 0 Special termination benefits 0 3 0 0 Net periodic (benefit) cost $ 39 $ 45 $ 1 $ 9

Equity

Equity	3 Months Ended
	Mar. 31, 2018
Stockholders' Equity Note [Abstract]
Equity	EQUITY The changes in the number of shares of Common Stock issued, held in treasury and outstanding, are as follows for the periods indicated: Common Stock Issued Held In Treasury Outstanding (in millions) Balance, December 31, 2017 660.1 237.5 422.6 Common Stock issued 0.0 0.0 0.0 Common Stock acquired 0.0 3.3 (3.3 ) Stock-based compensation programs(1) 0.0 (1.7 ) 1.7 Balance, March 31, 2018 660.1 239.1 421.0 __________ (1) Represents net shares issued from treasury pursuant to the Company’s stock-based compensation programs. In December 2017 , Prudential Financial’s Board of Directors authorized the Company to repurchase at management’s discretion up to $1.5 billion of its outstanding Common Stock during the period from January 1, 2018 through December 31, 2018. As of March 31, 2018 , 3.3 million shares of the Company’s Common Stock were repurchased under this authorization at a total cost of $375 million . The timing and amount of share repurchases are determined by management based upon market conditions and other considerations, and repurchases may be effected in the open market, through derivative, accelerated repurchase and other negotiated transactions and through prearranged trading plans complying with Rule 10b5-1(c) under the Securities Exchange Act of 1934 (the “Exchange Act”). Numerous factors could affect the timing and amount of any future repurchases under the share repurchase authorization, including increased capital needs of the Company due to changes in regulatory capital requirements, opportunities for growth and acquisitions, and the effect of adverse market conditions on the segments. Accumulated Other Comprehensive Income (Loss) The balance of and changes in each component of “Accumulated other comprehensive income (loss) attributable to Prudential Financial, Inc.” for the three months ended March 31, 2018 and 2017 , are as follows: Accumulated Other Comprehensive Income (Loss) Attributable to Prudential Financial, Inc. Foreign Currency Translation Adjustment Net Unrealized Investment Gains (Losses)(1) Pension and Postretirement Unrecognized Net Periodic Benefit (Cost) Total Accumulated Other Comprehensive Income (Loss) (in millions) Balance, December 31, 2017 $ (269 ) $ 19,968 $ (2,625 ) $ 17,074 Change in OCI before reclassifications 649 (4,640 ) (2 ) (3,993 ) Amounts reclassified from AOCI 0 (26 ) 56 30 Income tax benefit (expense) 8 845 (9 ) 844 Cumulative effect of adoption of ASU 2016-01 0 (847 ) 0 (847 ) Cumulative effect of adoption of ASU 2018-02 (231 ) 2,282 (398 ) 1,653 Balance, March 31, 2018 $ 157 $ 17,582 $ (2,978 ) $ 14,761 Accumulated Other Comprehensive Income (Loss) Attributable to Prudential Financial, Inc. Foreign Currency Translation Adjustment Net Unrealized Investment Gains (Losses)(1) Pension and Postretirement Unrecognized Net Periodic Benefit (Cost) Total Accumulated Other Comprehensive Income (Loss) (in millions) Balance, December 31, 2016 $ (973 ) $ 18,171 $ (2,577 ) $ 14,621 Change in OCI before reclassifications 570 (319 ) (12 ) 239 Amounts reclassified from AOCI 1 (490 ) 56 (433 ) Income tax benefit (expense) (62 ) 293 (15 ) 216 Balance, March 31, 2017 $ (464 ) $ 17,655 $ (2,548 ) $ 14,643 __________ (1) Includes cash flow hedges of $(622) million and $(39) million as of March 31, 2018 and December 31, 2017 , respectively, and $1,118 million and $1,316 million as of March 31, 2017 and December 31, 2016 , respectively. Reclassifications out of Accumulated Other Comprehensive Income (Loss) Three Months Ended Affected line item in Consolidated Statements of Operations 2018 2017 (in millions) Amounts reclassified from AOCI(1)(2): Foreign currency translation adjustment: Foreign currency translation adjustments $ 0 $ (1 ) Realized investment gains (losses), net Foreign currency translation adjustments 0 0 Other income Total foreign currency translation adjustment 0 (1 ) Net unrealized investment gains (losses): Cash flow hedges—Interest rate 0 (1 ) (3) Cash flow hedges—Currency (3 ) 0 (3) Cash flow hedges—Currency/Interest rate (49 ) 61 (3) Net unrealized investment gains (losses) on available-for-sale securities 78 430 Total net unrealized investment gains (losses) 26 490 (4) Amortization of defined benefit pension items: Prior service cost 1 1 (5) Actuarial gain (loss) (57 ) (57 ) (5) Total amortization of defined benefit pension items (56 ) (56 ) Total reclassifications for the period $ (30 ) $ 433 __________ (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 5 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 and other costs, future policy benefits and policyholders’ dividends. (5) See Note 10 for information on employee benefit plans. Net Unrealized Investment Gains (Losses) Net unrealized investment gains (losses) on securities classified as available-for-sale and 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 DAC, DSI, VOBA and Reinsurance Recoverables Future Policy Benefits, Policyholders’ Account Balances and Reinsurance Payables Policyholders’ Dividends Deferred Accumulated Other Comprehensive Income (Loss) Related to Net Unrealized Investment Gains (Losses) (in millions) Balance, December 31, 2017 $ 286 $ (2 ) $ 3 $ (46 ) $ (94 ) $ 147 Net investment gains (losses) on investments arising during the period (10 ) 6 (4 ) Reclassification adjustment for (gains) losses included in net income (41 ) 24 (17 ) Reclassification adjustment for OTTI losses excluded from net income(1) (1 ) 1 0 Impact of net unrealized investment (gains) losses on DAC, DSI, VOBA and reinsurance recoverables 0 0 0 Impact of net unrealized investment (gains) losses on future policy benefits and policyholders’ account balances and reinsurance payables 0 0 0 Impact of net unrealized investment (gains) losses on policyholders’ dividends 17 (8 ) 9 Balance, March 31, 2018 $ 234 $ (2 ) $ 3 $ (29 ) $ (71 ) $ 135 __________ (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) DAC, DSI, VOBA and Reinsurance Recoverables Future Policy Benefits, Policyholders’ Account Balances and Reinsurance Payables Policyholders’ Dividends Deferred Income Tax (Liability) Benefit Accumulated Other Comprehensive Income (Loss) Related to Net Unrealized Investment Gains (Losses) (in millions) Balance, December 31, 2017 $ 36,112 $ (1,580 ) $ (1,243 ) $ (3,631 ) $ (9,837 ) $ 19,821 Net investment gains (losses) on investments arising during the period (6,466 ) 2,026 (4,440 ) Reclassification adjustment for (gains) losses included in net income 15 (8 ) 7 Reclassification adjustment for OTTI losses excluded from net income(2) 1 (1 ) 0 Impact of net unrealized investment (gains) losses on DAC, DSI, VOBA and reinsurance recoverables 544 (203 ) 341 Impact of net unrealized investment (gains) losses on future policy benefits and policyholders’ account balances and reinsurance payables 257 (137 ) 120 Impact of net unrealized investment (gains) losses on policyholders’ dividends 1,018 (685 ) 333 Cumulative effect of adoption of ASU 2016-01 (2,042 ) 813 212 (1,017 ) Cumulative effect of adoption of ASU 2018-02 2,282 2,282 Balance, March 31, 2018 $ 27,620 $ (1,036 ) $ (986 ) $ (1,800 ) $ (6,351 ) $ 17,447 __________ (1) Includes cash flow hedges. See Note 5 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.

Earnings Per Share

Earnings Per Share	3 Months Ended
	Mar. 31, 2018
Earnings Per Share [Abstract]
Earnings Per Share	EARNINGS PER SHARE A reconciliation of the numerators and denominators of the basic and diluted per share computations of Common Stock based on the consolidated earnings of Prudential Financial for the periods indicated, is as follows: Three Months Ended March 31, 2018 2017 Income Weighted Per Share Income Weighted Per Share (in millions, except per share amounts) Basic earnings per share Net income (loss) $ 1,364 $ 1,372 Less: Income (loss) attributable to noncontrolling interests 1 3 Less: Dividends and undistributed earnings allocated to participating unvested share-based payment awards 16 17 Net income (loss) attributable to Prudential Financial available to holders of Common Stock $ 1,347 422.0 $ 3.19 $ 1,352 429.9 $ 3.14 Effect of dilutive securities and compensation programs Add: Dividends and undistributed earnings allocated to participating unvested share-based payment awards—Basic $ 16 $ 17 Less: Dividends and undistributed earnings allocated to participating unvested share-based payment awards—Diluted 16 16 Stock options 1.9 2.5 Deferred and long-term compensation programs 1.1 0.9 Exchangeable Surplus Notes 5 5.9 4 5.8 Diluted earnings per share Net income (loss) attributable to Prudential Financial available to holders of Common Stock $ 1,352 430.9 $ 3.14 $ 1,357 439.1 $ 3.09 Unvested share-based payment awards that contain nonforfeitable rights to dividends are participating securities and included in the computation of earnings per share pursuant to the two-class method. Under this method, earnings attributable to Prudential Financial are allocated between Common Stock and the participating awards, as if the awards were a second class of stock. During periods of net income available to holders of Common Stock, the calculation of earnings per share excludes the income attributable to participating securities in the numerator and the dilutive impact of these securities from the denominator. In the event of a net loss available to holders of Common Stock, undistributed earnings are not allocated to participating securities and the denominator excludes the dilutive impact of these securities as they do not share in the losses of the Company. Undistributed earnings allocated to participating unvested share-based payment awards for the three months ended March 31, 2018 and 2017 , as applicable, were based on 4.9 million and 5.3 million of such awards, respectively, weighted for the period they were outstanding. Stock options and shares related to deferred and long-term compensation programs that are considered antidilutive are excluded from the computation of diluted earnings per share. Stock options are considered antidilutive based on application of the treasury stock method or in the event of a net loss available to holders of Common Stock. Shares related to deferred and long-term compensation programs are considered antidilutive in the event of a net loss available to holders of Common Stock. For the periods indicated, the number of stock options and shares related to deferred and long-term compensation programs that were considered antidilutive and were excluded from the computation of diluted earnings per share, weighted for the portion of the period they were outstanding, are as follows: Three Months Ended March 31, 2018 2017 Shares Exercise Price Shares Exercise Price (in millions, except per share amounts, based on weighted average) Antidilutive stock options based on application of the treasury stock method 0.3 $ 107.65 0.2 $ 110.45 Antidilutive stock options due to net loss available to holders of Common Stock 0.0 0.0 Antidilutive shares based on application of the treasury stock method 0.0 0.5 Antidilutive shares due to net loss available to holders of Common Stock 0.0 0.0 Total antidilutive stock options and shares 0.3 0.7 In September 2009, the Company issued $500 million of surplus notes with an interest rate of 5.36% per annum which are exchangeable at the option of the note holders for shares of Common Stock. The initial exchange rate for the surplus notes was 10.1235 shares of Common Stock per each $1,000 principal amount of surplus notes. This was equivalent to 5.1 million shares and an initial exchange price per share of Common Stock of $98.78 . The exchange rate is subject to customary anti-dilution adjustments and is accordingly revalued during the fourth quarter of each year. As of March 31, 2018 , the exchange rate is equal to 11.7643 shares of Common Stock per each $1,000 principal amount of surplus notes. This is equivalent to 5.88 million shares and an exchange price per share of Common Stock of $85.00 . In calculating diluted earnings per share under the if-converted method, the potential shares that would be issued assuming a hypothetical exchange, weighted for the period the notes are outstanding, are added to the denominator, and the related interest expense, net of tax, is excluded from the numerator, if the overall effect is dilutive.

Segment Information

Segment Information	3 Months Ended
	Mar. 31, 2018
Segment Reporting [Abstract]
Segment Information	SEGMENT INFORMATION Segments The Company’s principal operations are comprised of five divisions, which together encompass seven segments, and its Corporate and Other operations. The U.S. Individual Solutions division consists of the Individual Annuities and Individual Life segments. The U.S. Workplace Solutions division consists of the Retirement and Group Insurance segments. The Investment Management division consists of the Investment Management segment. The International Insurance division consists of the International Insurance segment. The Closed Block division consists of the Closed Block segment. The Closed Block division is accounted for as a divested business that is reported separately from the divested businesses that are included in Corporate and Other operations. The Company’s Corporate and Other operations include corporate items and initiatives that are not allocated to business segments and businesses that have been or will be divested. Adjusted Operating Income The Company analyzes the operating performance of each segment using “adjusted operating income.” Adjusted operating income does not equate to “Income (loss) before income taxes and equity in earnings of operating joint ventures” or “Net income (loss)” as determined in accordance with U.S. GAAP but is the measure of segment profit or loss used by the Company’s chief operating decision maker to evaluate segment performance and allocate resources, and consistent with authoritative guidance, is the measure of segment performance presented below. Adjusted operating income is calculated by adjusting each segment’s “Income (loss) before income taxes and equity in earnings of operating joint ventures” for the following items: • realized investment gains (losses), net, and related adjustments; • charges related to realized investment gains (losses), net; • net investment gains (losses) on assets supporting experience-rated contractholder liabilities and changes in experience-rated contractholder liabilities due to asset value changes; • divested businesses; and • equity in earnings of operating joint ventures and earnings attributable to noncontrolling interests. These items are important to an understanding of overall results of operations. Adjusted operating income is not a substitute for income determined in accordance with U.S. GAAP, and the Company’s definition of adjusted operating income may differ from that used by other companies. The Company, however, believes that the presentation of adjusted operating income as measured for management purposes enhances the understanding of results of operations by highlighting the results from ongoing operations and the underlying profitability factors of its businesses. For more information on these reconciling items, see Note 22 to the Consolidated Financial Statements included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2017. Beginning in the first quarter of 2018, as a result of the adoption of ASU 2016-01 (see Note 2), changes in the fair value of equity securities are included in net income, but are excluded from adjusted operating income. These changes in fair value are classified as related adjustments within “realized investment gains (losses), net, and related adjustments” reconciling item in the tables below. Reconciliation of adjusted operating income and net income (loss) The table below reconciles “adjusted operating income before income taxes” to “income before income taxes and equity in earnings of operating joint ventures”: Three Months Ended 2018 2017 (in millions) Adjusted operating income before income taxes by segment: Individual Annuities $ 519 $ 468 Individual Life 36 118 Total U.S. Individual Solutions division(1) 555 586 Retirement 317 397 Group Insurance 55 34 Total U.S. Workplace Solutions division(1) 372 431 Investment Management 232 196 Total Investment Management division(1) 232 196 International Insurance 856 799 Total International Insurance division 856 799 Corporate and Other operations (294 ) (352 ) Total Corporate and Other (294 ) (352 ) Total segment adjusted operating income before income taxes 1,721 1,660 Reconciling items: Realized investment gains (losses), net, and related adjustments 87 (66 ) Charges related to realized investment gains (losses), net (23 ) 104 Investment gains (losses) on assets supporting experience-rated contractholder liabilities, net (403 ) 44 Change in experience-rated contractholder liabilities due to asset value changes 418 (12 ) Divested businesses: Closed Block division (9 ) 34 Other divested businesses (72 ) 6 Equity in earnings of operating joint ventures and earnings attributable to noncontrolling interests (26 ) (28 ) Consolidated income (loss) before income taxes and equity in earnings of operating joint ventures $ 1,693 $ 1,742 __________ (1) Prior period divisional subtotals are presented on a basis consistent with the Company’s new organizational structure. Individual segment results and consolidated totals remain unchanged. See Note 22 to the Consolidated Financial Statements included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2017. The Individual Annuities segment results reflect DAC as if the individual annuity business is a stand-alone operation. The elimination of intersegment costs capitalized in accordance with this policy is included in consolidating adjustments within Corporate and Other operations. Reconciliation of select financial information The table below presents revenues and total assets for the Company’s reportable segments for the periods or as of the dates indicated: Revenues Total Assets Three Months Ended March 31, December 31, 2018 2017 (in millions) Individual Annuities $ 1,252 $ 1,215 $ 178,458 $ 183,666 Individual Life 1,425 1,445 84,393 83,985 Total U.S. Individual Solutions division(1) 2,677 2,660 262,851 267,651 Retirement 2,089 1,937 179,483 183,629 Group Insurance 1,416 1,383 42,064 41,575 Total U.S. Workplace Solutions division(1) 3,505 3,320 221,547 225,204 Investment Management 826 756 47,811 49,944 Total Investment Management division(1) 826 756 47,811 49,944 International Insurance 6,040 5,409 222,768 211,647 Total International Insurance division 6,040 5,409 222,768 211,647 Corporate and Other operations (173 ) (138 ) 12,729 14,556 Total Corporate and Other (173 ) (138 ) 12,729 14,556 Total 12,875 12,007 767,706 769,002 Reconciling items: Realized investment gains (losses), net, and related adjustments 87 (66 ) Charges related to realized investment gains (losses), net (71 ) (22 ) Investment gains (losses) on assets supporting experience-rated contractholder liabilities, net (403 ) 44 Divested businesses: Closed Block division 1,163 1,557 61,971 63,134 Other divested businesses 132 181 Equity in earnings of operating joint ventures and earnings attributable to noncontrolling interests (26 ) (31 ) Total per Unaudited Interim Consolidated Financial Statements $ 13,757 $ 13,670 $ 829,677 $ 832,136 __________ (1) Prior period divisional subtotals are presented on a basis consistent with the Company’s new organizational structure. Individual segment results and consolidated totals remain unchanged. See Note 22 to the Consolidated Financial Statements included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2017. Management has determined the intersegment revenues with reference to market rates. Intersegment revenues are eliminated in consolidation in Corporate and Other. The Investment Management segment revenues include intersegment revenues, primarily consisting of asset-based management and administration fees, as follows: Three Months Ended 2018 2017 (in millions) Investment Management segment intersegment revenues $ 184 $ 172 Segments may also enter into internal derivative contracts with other segments. For adjusted operating income, each segment accounts for the internal derivative results consistent with the manner in which that segment accounts for other similar external derivatives.

Commitments and Contingent Liab

Commitments and Contingent Liabilities	3 Months Ended
	Mar. 31, 2018
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingent Liabilities	COMMITMENTS AND CONTINGENT LIABILITIES Commitments and Guarantees Commercial Mortgage Loan Commitments March 31, December 31, (in millions) Total outstanding mortgage loan commitments $ 2,093 $ 2,772 Portion of commitment where prearrangement to sell to investor exists $ 477 $ 435 In connection with the Company’s commercial mortgage operations, it originates commercial mortgage loans. Commitments for loans that will be held for sale are recognized as derivatives and recorded at fair value. In certain of these transactions, the Company pre-arranges that it will sell the loan to an investor, including to government sponsored entities as discussed below, after the Company funds the loan. Commitments to Purchase Investments (excluding Commercial Mortgage Loans) March 31, December 31, (in millions) Expected to be funded from the general account and other operations outside the separate accounts $ 6,359 $ 6,319 Expected to be funded from separate accounts $ 92 $ 141 The Company has other commitments to purchase or fund investments, some of which are contingent upon events or circumstances not under the Company’s control, including those at the discretion of the Company’s counterparties. The Company anticipates a portion of these commitments will ultimately be funded from its separate accounts. Indemnification of Securities Lending Transactions March 31, December 31, (in millions) Indemnification provided to certain securities lending clients $ 5,142 $ 4,619 Fair value of related collateral associated with above indemnifications $ 5,233 $ 4,722 Accrued liability associated with guarantee $ 0 $ 0 In the normal course of business, the Company may facilitate securities lending transactions on behalf of certain client accounts (collectively, “the accounts”) for which the Company is also the investment advisor and/or the asset manager. In certain of these arrangements, the Company has provided an indemnification to the accounts to hold them harmless against losses caused by counterparty (i.e., borrower) defaults associated with the securities lending activity facilitated by the Company. Collateral is provided by the counterparty to the accounts at the inception of the loan equal to or greater than 102% of the fair value of the loaned securities and the collateral is maintained daily at 102% or greater of the fair value of the loaned securities. The Company is only at risk if the counterparty to the securities lending transaction defaults and the value of the collateral held is less than the value of the securities loaned to such counterparty. The Company believes the possibility of any payments under these indemnities is remote. Credit Derivatives Written As discussed further in Note 5, the Company writes credit derivatives under which the Company is obligated to pay the counterparty the referenced amount of the contract and receive in return the defaulted security or similar security. Guarantees of Asset Values March 31, December 31, (in millions) Guaranteed value of third-parties’ assets $ 76,159 $ 77,290 Fair value of collateral supporting these assets $ 75,402 $ 77,651 Asset (liability) associated with guarantee, carried at fair value $ 6 $ (1 ) Certain contracts underwritten by the Retirement segment include guarantees related to financial assets owned by the guaranteed party. These contracts are accounted for as derivatives and carried at fair value. The collateral supporting these guarantees is not reflected on the Unaudited Interim Consolidated Statements of Financial Position. Indemnification of Serviced Mortgage Loans March 31, December 31, (in millions) Maximum exposure under indemnification agreements for mortgage loans serviced by the Company $ 1,644 $ 1,609 First-loss exposure portion of above $ 492 $ 483 Accrued liability associated with guarantees $ 15 $ 14 As part of the commercial mortgage activities of the Company’s Investment Management segment, the Company provides commercial mortgage origination, underwriting and servicing for certain government sponsored entities, such as Fannie Mae and Freddie Mac. The Company has agreed to indemnify the government sponsored entities for a portion of the credit risk associated with certain of the mortgages it services through a delegated authority arrangement. Under these arrangements, the Company originates multi-family mortgages for sale to the government sponsored entities based on underwriting standards they specify, and makes payments to them for a specified percentage share of losses they incur on certain loans serviced by the Company. The Company’s percentage share of losses incurred generally varies from 2% to 20% of the loan balance, and is typically based on a first-loss exposure for a stated percentage of the loan balance, plus a shared exposure with the government sponsored entity for any losses in excess of the stated first-loss percentage, subject to a contractually specified maximum percentage. The Company determines the liability related to this exposure using historical loss experience, and the size and remaining life of the asset. The Company services $13,078 million and $12,892 million of mortgages subject to these loss-sharing arrangements as of March 31, 2018 and December 31, 2017 , respectively, all of which are collateralized by first priority liens on the underlying multi-family residential properties. As of March 31, 2018 , these mortgages had a weighted-average debt service coverage ratio of 1.85 times and a weighted-average loan-to-value ratio of 60% . As of December 31, 2017 , these mortgages had a weighted average debt service coverage ratio of 1.82 times and a weighted-average loan-to-value ratio of 59% . The Company had no losses related to indemnifications that were settled for the three months ended March 31, 2018 and 2017 , respectively. Other Guarantees March 31, December 31, (in millions) Other guarantees where amount can be determined $ 31 $ 31 Accrued liability for other guarantees and indemnifications $ 0 $ 0 The Company is also subject to other financial guarantees and indemnity arrangements. The Company has provided indemnities and guarantees related to acquisitions, dispositions, investments and other transactions that are triggered by, among other things, breaches of representations, warranties or covenants provided by the Company. These obligations are typically subject to various time limitations, defined by the contract or by operation of law, such as statutes of limitation. In some cases, the maximum potential obligation is subject to contractual limitations, while in other cases such limitations are not specified or applicable. Included above is $31 million for both March 31, 2018 and December 31, 2017 of yield maintenance guarantees related to certain investments the Company sold. The Company does not expect to make any payments on these guarantees and is not carrying any liabilities associated with these guarantees. Since certain of these obligations are not subject to limitations, it is not possible to determine the maximum potential amount due under these guarantees. The accrued liabilities identified above do not include retained liabilities associated with sold businesses. 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 or other parties. In certain cases, if appropriate, the Company may offer customers or other parties 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 flow 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 flow 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 businesses. Pending legal and regulatory actions include proceedings relating to aspects of the Company’s businesses and operations that are specific to it and proceedings that are typical of the businesses in which it operates, including in both cases businesses that have been either divested or placed in wind down status. Some of these proceedings have been brought on behalf of various alleged classes of complainants. In certain of these matters, the plaintiffs 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 potentially material, is disclosed, including matters discussed below. The Company estimates that as of March 31, 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 $250 million . Any 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. The following discussion of litigation and regulatory matters provides an update of those matters discussed in Note 23 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 , and should be read in conjunction with the complete descriptions provided in the Form 10-K. Individual Annuities, Individual Life and Group Insurance Huffman v. The Prudential Insurance Company of America In April 2018, the Third Circuit Court of Appeals denied Prudential Insurance’s request for leave to appeal the class certification decision. Other Matters Rosen v. PRIAC, et al. In March 2018, plaintiff’s time to appeal the decision of the Court of Appeals expired. This case is now closed. Residential Mortgage-Backed Securities Trustee Litigation PICA et al. v. Citibank N.A. In March 2018, the federal court granted Citibank’s motion for summary judgment. In April 2018, plaintiffs filed a notice of appeal to the U.S. Court of Appeals for the Second Circuit from the March 2018 decision granting summary judgment. PICA et al. v. HSBC, et al. In February 2018, the court denied plaintiffs’ motion for class certification and plaintiffs filed a petition with the Second Circuit Court of Appeals seeking permission to appeal the class certification decision. PICA et al. v. U.S. Bank N.A . In February 2018, the federal court entered a stipulated order: (i) dismissing all claims involving three trusts with prejudice; (ii) with respect to twenty trusts, dismissing with prejudice the Trust Indenture Act (“TIA”) claims for lack of standing, and the breach of contract claims without prejudice; and (iii) dismissing without prejudice the TIA and breach of contract claims concerning the four remaining trusts. In February 2018, U.S. Bank filed an appeal from the state court’s order concerning U.S. Bank’s motion to dismiss the amended complaint. In March 2018, plaintiffs filed a cross-appeal of the state court’s order concerning the motion to dismiss. 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 flow 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 flow 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.

Significant Accounting Polici22

Significant Accounting Policies and Pronouncements (Policies)	3 Months Ended
	Mar. 31, 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. The Unaudited Interim Consolidated Financial Statements include the accounts of Prudential Financial, entities over which the Company exercises control, including majority-owned subsidiaries and variable interest entities (“VIEs”) in which the Company is considered the primary beneficiary. See Note 4 for more information on the Company’s consolidated variable interest entities. 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 . Elimination of Gibraltar Life Reporting Lag Prior to January 1, 2018, the Company’s Gibraltar Life Insurance Company, Ltd. (“Gibraltar Life”) consolidated operations used a November 30 fiscal year end for purposes of inclusion in the Company’s Consolidated Financial Statements. The result of this reporting date difference was a one-month reporting lag for Gibraltar Life. As a result, the Company’s unaudited interim consolidated balance sheet as of March 31 previously included the assets and liabilities of Gibraltar Life as of February 28, and the Company’s unaudited interim consolidated income statement previously included Gibraltar Life’s results of operations for the three months ended February 28. Effective January 1, 2018, the Company converted its Gibraltar Life operations to a December 31 fiscal year end. This action eliminated the one-month reporting lag so that the reporting dates and periods of financial balances and results of Gibraltar Life are consistent with those of the Company. The establishment of a new fiscal year end for Gibraltar Life is considered a change in accounting principle to a preferable method and requires retrospective application. The Company believes this change in accounting principle is preferable given that it aligns the reporting dates of Prudential Financial and its subsidiaries which allows for more timely and consistent basis of reporting the financial position and results of Gibraltar Life. In order to effect this elimination, the Company restated prior periods’ equity which increased “Retained Earnings” by approximately $167 million as of December 31, 2015, 2016 and 2017. The impact to the Statements of Operations, Statements of Cash Flows, Statements of Comprehensive Income and other balance sheet captions, as a result of the elimination of the reporting lag, was not material for any of the periods presented.
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 (“DAC”) and related amortization; value of business acquired (“VOBA”) and its amortization; amortization of deferred sales inducements (“DSI”); measurement of goodwill and any related impairment; valuation of investments including derivatives and the recognition of other-than-temporary impairments (“OTTI”); future policy benefits including guarantees; pension and other postretirement benefits; 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.
Investments and Investment-related liabilities	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 “Other trading account assets, at fair value.” These fixed maturities are primarily related to assets associated with consolidated variable interest entities for which the Company is the investment manager and the realized and unrealized gains and losses activity are generally offset by changes in the corresponding liabilities. 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.” Assets supporting experience-rated contractholder liabilities, at fair value is the new title of the financial statement line item formerly titled “Trading account assets supporting insurance liabilities, at fair value.” This financial statement line item includes invested assets that consist of fixed maturities, equity securities, and short-term investments and cash equivalents, that support certain products included in the Retirement and International Insurance segments which are experience-rated, meaning that the investment results associated with these products are expected to ultimately accrue to contractholders. 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 “Other trading account asset, at fair value” were reclassified to “Equity securities, at fair value.” The retitled financial statement line item is comprised of common stock, mutual fund shares and non-redeemable preferred stock, 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 securities reported in the financial statement line item 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 other-than-temporary impairment (“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 item 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 item consists of the Company’s non-coupon investments in Limited Partnerships and Limited Liability Companies (“LPs/LLCs”) (other than operating joint ventures), wholly-owned investment real estate, derivative assets and other investments. 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.” The Company consolidates LPs/LLCs in certain other instances where it is deemed to exercise control, or is considered the primary beneficiary of a variable interest entity. See Note 4 for additional information about VIEs.
Other Income	Other income includes realized and unrealized gains or losses from investments reported as “Fixed maturities, trading,” “Assets supporting experience-rated contractholder liabilities, at fair value,” “Equity securities, at fair value,” and “Other invested assets” that are measured at fair value.
Adoption of New Accounting Pronouncements	Adoption of ASU 2014-09 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. Effective January 1, 2018, the Company adopted ASU 2014-09, Revenue from Contracts with Customers (Topic 606), using a modified retrospective method. The core principle of this ASU is that an entity should recognize revenue 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 or services. This core principle is assessed via application of a five-step revenue recognition model that is detailed within the ASU. There was no material impact to the financial statements at the date of adoption of this ASU. The prospective impact primarily affects revenue recognition policies pertaining to the Company’s Investment Management business. This revenue is classified within the “Asset management and service fees” line item in the Consolidated Statements of Operations. Adoption of this standard has no impact on revenues related to financial instruments and insurance contracts (some of which may be reflected within “Asset management and service fees”) given that these types of revenues were specifically scoped out of this ASU. “Asset management and service fees” principally includes asset-based asset management fees (which continue to be recognized in the period in which the services are performed) and performance-based incentive fees. Under the previously existing guidance, the Company recorded performance-based incentive fee revenue when the contractual terms of the asset management fee arrangement were satisfied such that the performance fee was no longer subject to clawback or contingency. Under the new guidance, the Company will record this revenue when the contractual terms of the asset management fee arrangement have been satisfied and it is probable that a significant reversal in the amount of the fee will not occur. Under this principle the Company will continue to record a deferred performance-based incentive fee liability to the extent it receives cash related to the performance-based incentive fee prior to meeting the revenue recognition criteria delineated above. Asset management and service fee revenues included $862 million of asset-based management fees, $5 million of performance-based incentive fees and $159 million of other fees for the three months ended March 31, 2018. For the three months ended March 31, 2017, asset management and service fee revenues included $796 million of asset-based management fees, $7 million of performance-based incentive fees and $148 million of other fees. These fees predominantly relate to investment management activities but also include certain asset-based fees associated with insurance contracts. In accordance with the provisions of the ASU, the comparative information for the prior period was not restated and continues to be reported under the accounting standards in effect for that period. Other ASU adopted during the three months ended March 31, 2018 Standard Description Effective date and method of adoption Effect on the financial statements or other significant matters 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 $1,653 million. 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 Statement of Financial Position Line Items (1) (2) (3) (4) (in millions) Fixed maturities, available-for-sale, at fair value $ 346,780 $ 346,780 Fixed maturities, held-to-maturity, at amortized cost 2,049 2,049 * Fixed maturities, trading, at fair value 0 3,507 3,507 Trading account assets supporting insurance liabilities, at fair value 22,097 (22,097 ) 0 * Assets supporting experience-rated contractholder liabilities, at fair value 0 22,097 22,097 Other trading account assets, at fair value 5,752 (5,752 ) 0 Equity securities, available-for-sale, at fair value 6,174 (6,174 ) 0 * Equity securities, at fair value 0 6,174 1,155 7,329 Commercial mortgage and other loans 56,045 56,045 Policy loans 11,891 11,891 Other long-term investments 12,308 (12,308 ) 0 * Other invested assets 0 1,065 12,308 13,373 Short-term investments 6,775 25 6,800 Total investments $ 469,871 $ 0 $ 0 $ 0 $ 0 $ 469,871 * — New line item effective January 1, 2018. Strikethrough — Eliminated line item effective January 1, 2018. ________ (1) Retitled “Trading account assets supporting insurance liabilities, at fair value” to “Assets supporting experience-rated contractholder liabilities, at fair value” as equity securities are included in this line item, and they can no longer be described as trading. (2) 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. (3) Eliminated the line item “Other trading account assets, at fair value” and reclassified each component to another line item. (4) 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 millions) Increase / (Decrease) Other invested assets $ 229 Total assets $ 229 Policyholders’ dividends $ 157 Income taxes 15 Total liabilities 172 Accumulated other comprehensive income (loss) (847 ) Retained earnings 904 Total equity 57 Total liabilities and equity $ 229 (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 March 31, 2018 Standard Description Effective date and method of adoption Effect on the financial statements or other significant matters ASU 2016-02 , Leases (Topic 842) This ASU ensures that assets and liabilities from all outstanding lease contracts are recognized on the balance sheet (with limited exception). The ASU substantially changes a Lessee’s accounting for leases and requires the recording on balance sheet of a “right-of-use” asset and liability to make lease payments for most leases. A Lessee will continue to recognize expense in its income statement in a manner similar to the requirements under the current lease accounting standard. For Lessors, the standard modifies classification criteria and accounting for sales-type and direct financing leases and requires a Lessor to derecognize the carrying value of the leased asset that is considered to have been transferred to a Lessee and record a lease receivable and residual asset (“receivable and residual” approach). The standard also eliminates the real estate specific provisions of the current standard (i.e., sale-leaseback). 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 is currently assessing the impact of the ASU on the Company’s Consolidated Financial Statements and Notes to the Consolidated Financial Statements. ASU 2016-13 , Financial Instruments-Credit Losses (Topic326): Measurement of Credit Losses on Financial Instruments 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 OTTI 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 the 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 OTTI 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 2017-04, Intangibles - Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment This ASU simplifies the subsequent measurement of goodwill by eliminating Step 2 from the goodwill impairment test in current GAAP, which measures a goodwill impairment by comparing the implied fair value of a reporting unit’s goodwill with the carrying amount of the goodwill. Under the ASU, a goodwill impairment should be recorded for the amount by which the carrying amount of a reporting unit exceeds its fair value (capped by the total amount of goodwill allocated to the reporting unit). January 1, 2020 using the prospective method (with early adoption permitted). 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. Standard Description Effective date and method of adoption Effect on the financial statements or other significant matters 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 is currently assessing the impact of the ASU 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 is currently assessing the impact of the ASU on the Company’s Consolidated Financial Statements and Notes to the Consolidated Financial Statements.

Significant Accounting Polici23

Significant Accounting Policies and Pronouncements (Tables)	3 Months Ended
	Mar. 31, 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 millions) Increase / (Decrease) Other invested assets $ 229 Total assets $ 229 Policyholders’ dividends $ 157 Income taxes 15 Total liabilities 172 Accumulated other comprehensive income (loss) (847 ) Retained earnings 904 Total equity 57 Total liabilities and equity $ 229 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 Statement of Financial Position Line Items (1) (2) (3) (4) (in millions) Fixed maturities, available-for-sale, at fair value $ 346,780 $ 346,780 Fixed maturities, held-to-maturity, at amortized cost 2,049 2,049 * Fixed maturities, trading, at fair value 0 3,507 3,507 Trading account assets supporting insurance liabilities, at fair value 22,097 (22,097 ) 0 * Assets supporting experience-rated contractholder liabilities, at fair value 0 22,097 22,097 Other trading account assets, at fair value 5,752 (5,752 ) 0 Equity securities, available-for-sale, at fair value 6,174 (6,174 ) 0 * Equity securities, at fair value 0 6,174 1,155 7,329 Commercial mortgage and other loans 56,045 56,045 Policy loans 11,891 11,891 Other long-term investments 12,308 (12,308 ) 0 * Other invested assets 0 1,065 12,308 13,373 Short-term investments 6,775 25 6,800 Total investments $ 469,871 $ 0 $ 0 $ 0 $ 0 $ 469,871 * — New line item effective January 1, 2018. Strikethrough — Eliminated line item effective January 1, 2018. ________ (1) Retitled “Trading account assets supporting insurance liabilities, at fair value” to “Assets supporting experience-rated contractholder liabilities, at fair value” as equity securities are included in this line item, and they can no longer be described as trading. (2) 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. (3) Eliminated the line item “Other trading account assets, at fair value” and reclassified each component to another line item. (4) Retitled “Other long-term investments” to “Other invested assets.”

Investments (Tables)

Investments (Tables)	3 Months Ended
	Mar. 31, 2018
Investments [Abstract]
Fixed Maturities, Available-for-sale Securities	(1) Excludes notes with amortized cost of $2,846 million (fair value, $2,846 million ), which have been offset with the associated payables under a netting agreement. (2) Includes credit-tranched securities collateralized by loan obligations, sub-prime mortgages, auto loans, credit cards, education loans and other asset types. (3) Includes publicly-traded agency pass-through securities and collateralized mortgage obligations. (4) Represents the amount of unrealized losses remaining in “Accumulated other comprehensive income (loss)” (“AOCI”), from the impairment measurement date. Amount excludes $440 million of net unrealized gains on impaired available-for-sale securities and $2 million of net unrealized gains on impaired held-to-maturity securities relating to changes in the value of such securities subsequent to the impairment measurement date. (5) Excludes notes with amortized cost of $4,753 million (fair value, $4,812 million ), which have been offset with the associated payables under a netting agreement. The following tables set forth information relating to fixed maturity securities (excluding investments classified as trading), as of the dates indicated: March 31, 2018 Amortized Gross Unrealized Gains Gross Unrealized Losses Fair Value OTTI in AOCI(4) (in millions) Fixed maturities, available-for-sale: U.S. Treasury securities and obligations of U.S. government authorities and agencies $ 22,519 $ 3,114 $ 612 $ 25,021 $ 0 Obligations of U.S. states and their political subdivisions 9,483 842 30 10,295 0 Foreign government bonds 94,181 16,498 354 110,325 0 U.S. corporate public securities 81,309 5,882 1,365 85,826 (6 ) U.S. corporate private securities(1) 32,121 1,528 406 33,243 (10 ) Foreign corporate public securities 26,776 2,635 233 29,178 (5 ) Foreign corporate private securities 23,829 1,179 365 24,643 0 Asset-backed securities(2) 12,614 226 23 12,817 (184 ) Commercial mortgage-backed securities 13,021 87 245 12,863 0 Residential mortgage-backed securities(3) 3,327 129 37 3,419 (1 ) Total fixed maturities, available-for-sale(1) $ 319,180 $ 32,120 $ 3,670 $ 347,630 $ (206 ) (1) Excludes notes with amortized cost of $2,660 million (fair value, $2,660 million ), which have been offset with the associated payables under a netting agreement. (2) Includes credit-tranched securities collateralized by loan obligations, sub-prime mortgages, auto loans, credit cards, education loans and other asset types. (3) Includes publicly-traded agency pass-through securities and collateralized mortgage obligations. (4) Represents the amount of unrealized losses remaining in AOCI, from the impairment measurement date. Amount excludes $553 million of net unrealized gains on impaired available-for-sale securities and $2 million of net unrealized gains on impaired held-to-maturity securities relating to changes in the value of such securities subsequent to the impairment measurement date. (5) Excludes notes with amortized cost of $4,627 million (fair value, $4,913 million ), which have been offset with the associated payables under a netting agreement. December 31, 2017 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value OTTI in AOCI(4) (in millions) Fixed maturities, available-for-sale: U.S. Treasury securities and obligations of U.S. government authorities and agencies $ 22,837 $ 3,647 $ 346 $ 26,138 $ 0 Obligations of U.S. states and their political subdivisions 9,366 1,111 6 10,471 0 Foreign government bonds 88,062 15,650 293 103,419 0 U.S. corporate public securities 81,967 8,671 414 90,224 (10 ) U.S. corporate private securities(1) 31,852 2,051 169 33,734 (13 ) Foreign corporate public securities 26,389 3,118 99 29,408 (5 ) Foreign corporate private securities 23,322 1,242 337 24,227 0 Asset-backed securities(2) 11,965 278 10 12,233 (237 ) Commercial mortgage-backed securities 13,134 238 91 13,281 0 Residential mortgage-backed securities(3) 3,491 165 11 3,645 (2 ) Total fixed maturities, available-for-sale(1) $ 312,385 $ 36,171 $ 1,776 $ 346,780 $ (267 )
Fixed Maturities, Held-to-maturity Securities	December 31, 2017 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value (in millions) Fixed maturities, held-to-maturity: Foreign government bonds $ 865 $ 265 $ 0 $ 1,130 Foreign corporate public securities 654 82 0 736 Foreign corporate private securities(5) 84 2 0 86 Commercial mortgage-backed securities 0 0 0 0 Residential mortgage-backed securities(3) 446 32 0 478 Total fixed maturities, held-to-maturity(5) $ 2,049 $ 381 $ 0 $ 2,430 __________ (1) Excludes notes with amortized cost of $2,660 million (fair value, $2,660 million ), which have been offset with the associated payables under a netting agreement. (2) Includes credit-tranched securities collateralized by loan obligations, sub-prime mortgages, auto loans, credit cards, education loans and other asset types. (3) Includes publicly-traded agency pass-through securities and collateralized mortgage obligations. (4) Represents the amount of unrealized losses remaining in AOCI, from the impairment measurement date. Amount excludes $553 million of net unrealized gains on impaired available-for-sale securities and $2 million of net unrealized gains on impaired held-to-maturity securities relating to changes in the value of such securities subsequent to the impairment measurement date. (5) Excludes notes with amortized cost of $4,627 million (fair value, $4,913 million ), which have been offset with the associated payables under a netting agreement. March 31, 2018 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value (in millions) Fixed maturities, held-to-maturity: Foreign government bonds $ 915 $ 283 $ 0 $ 1,198 Foreign corporate public securities 685 75 0 760 Foreign corporate private securities(5) 88 2 0 90 Commercial mortgage-backed securities 0 0 0 0 Residential mortgage-backed securities(3) 432 31 0 463 Total fixed maturities, held-to-maturity(5) $ 2,120 $ 391 $ 0 $ 2,511 __________ (1) Excludes notes with amortized cost of $2,846 million (fair value, $2,846 million ), which have been offset with the associated payables under a netting agreement. (2) Includes credit-tranched securities collateralized by loan obligations, sub-prime mortgages, auto loans, credit cards, education loans and other asset types. (3) Includes publicly-traded agency pass-through securities and collateralized mortgage obligations. (4) Represents the amount of unrealized losses remaining in “Accumulated other comprehensive income (loss)” (“AOCI”), from the impairment measurement date. Amount excludes $440 million of net unrealized gains on impaired available-for-sale securities and $2 million of net unrealized gains on impaired held-to-maturity securities relating to changes in the value of such securities subsequent to the impairment measurement date. (5) Excludes notes with amortized cost of $4,753 million (fair value, $4,812 million ), which have been offset with the associated payables under a netting agreement.
Duration Of Gross Unrealized Losses On Fixed Maturity Securities	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: March 31, 2018 Less Than Twelve Months Total Fair Gross Fair Gross Fair Gross (in millions) Fixed maturities(1): U.S. Treasury securities and obligations of U.S. government authorities and agencies $ 4,324 $ 127 $ 4,984 $ 485 $ 9,308 $ 612 Obligations of U.S. states and their political subdivisions 1,217 16 264 14 1,481 30 Foreign government bonds 3,882 133 2,866 221 6,748 354 U.S. corporate public securities 28,236 822 5,983 543 34,219 1,365 U.S. corporate private securities 10,588 230 2,123 176 12,711 406 Foreign corporate public securities 5,635 126 1,478 107 7,113 233 Foreign corporate private securities 4,804 86 3,588 279 8,392 365 Asset-backed securities 2,511 13 297 10 2,808 23 Commercial mortgage-backed securities 5,843 116 2,138 129 7,981 245 Residential mortgage-backed securities 1,161 24 276 13 1,437 37 Total $ 68,201 $ 1,693 $ 23,997 $ 1,977 $ 92,198 $ 3,670 __________ (1) Includes $13 million of fair value and less than $1 million of gross unrealized losses, which are not reflected in AOCI, on securities classified as held-to-maturity, as of March 31, 2018 . December 31, 2017 Less Than Twelve Months Total Fair Gross Fair Gross Fair Gross (in millions) Fixed maturities(1): U.S. Treasury securities and obligations of U.S. government authorities and agencies $ 3,450 $ 28 $ 6,391 $ 318 $ 9,841 $ 346 Obligations of U.S. states and their political subdivisions 44 0 287 6 331 6 Foreign government bonds 4,417 55 2,937 238 7,354 293 U.S. corporate public securities 7,914 110 6,831 304 14,745 414 U.S. corporate private securities 4,596 76 2,009 93 6,605 169 Foreign corporate public securities 2,260 21 1,678 78 3,938 99 Foreign corporate private securities 1,213 20 5,339 317 6,552 337 Asset-backed securities 564 2 366 8 930 10 Commercial mortgage-backed securities 2,593 17 2,212 74 4,805 91 Residential mortgage-backed securities 584 4 286 7 870 11 Total $ 27,635 $ 333 $ 28,336 $ 1,443 $ 55,971 $ 1,776 __________ (1) Includes $12 million of fair value and less than $1 million of gross unrealized losses, which are not reflected in AOCI, on securities classified as held-to-maturity, as of December 31, 2017 .
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: March 31, 2018 Available-for-Sale Held-to-Maturity Amortized Cost Fair Value Amortized Cost Fair Value (in millions) Fixed maturities: Due in one year or less $ 13,067 $ 13,597 $ 0 $ 0 Due after one year through five years 50,349 53,811 185 191 Due after five years through ten years 66,026 70,770 592 663 Due after ten years(1) 160,776 180,353 911 1,194 Asset-backed securities 12,614 12,817 0 0 Commercial mortgage-backed securities 13,021 12,863 0 0 Residential mortgage-backed securities 3,327 3,419 432 463 Total $ 319,180 $ 347,630 $ 2,120 $ 2,511 __________ (1) Excludes available-for-sale notes with amortized cost of $2,846 million (fair value, $2,846 million ) and held-to-maturity notes with amortized cost of $4,753 million (fair value, $4,812 million ), which have been offset with the associated payables under a netting agreement.
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 March 31, 2018 2017 (in millions) Fixed maturities, available-for-sale: Proceeds from sales(1) $ 9,585 $ 7,730 Proceeds from maturities/prepayments 5,226 5,874 Gross investment gains from sales and maturities 374 391 Gross investment losses from sales and maturities (257 ) (163 ) OTTI recognized in earnings(2) (39 ) (54 ) Fixed maturities, held-to-maturity: Proceeds from maturities/prepayments(3) $ 36 $ 50 __________ (1) Includes $146 million and $215 million of non-cash related proceeds due to the timing of trade settlements for the three months ended March 31, 2018 and 2017 , respectively. (2) Excludes the portion of OTTI amounts remaining in “Other comprehensive income (loss)” (“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 impairment. (3) Includes $0 million and $1 million of non-cash related proceeds due to the timing of trade settlements for the three months ended March 31, 2018 and 2017 , respectively.
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 March 31, 2018 2017 (in millions) Credit loss impairments: Balance, beginning of period $ 319 $ 359 New credit loss impairments 0 0 Additional credit loss impairments on securities previously impaired 0 1 Increases due to the passage of time on previously recorded credit losses 2 3 Reductions for securities which matured, paid down, prepaid or were sold during the period (113 ) (9 ) Reductions for securities impaired to fair value during the period(1) (4 ) (3 ) Accretion of credit loss impairments previously recognized due to an increase in cash flows expected to be collected (1 ) (1 ) Balance, end of period $ 203 $ 350 __________ (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.
Assets Supporting Experience-Rated Contractholder Liabilities	The following table sets forth the composition of “Assets supporting experience-rated contractholder liabilities,” as of the dates indicated: March 31, 2018 December 31, 2017 Amortized Fair Value Amortized Fair Value (in millions) Short-term investments and cash equivalents $ 151 $ 151 $ 245 $ 245 Fixed maturities: Corporate securities 13,573 13,627 13,816 14,073 Commercial mortgage-backed securities 2,394 2,369 2,294 2,311 Residential mortgage-backed securities(1) 923 908 961 966 Asset-backed securities(2) 1,398 1,426 1,363 1,392 Foreign government bonds 1,101 1,104 1,050 1,057 U.S. government authorities and agencies and obligations of U.S. states 367 400 357 410 Total fixed maturities 19,756 19,834 19,841 20,209 Equity securities 1,395 1,652 1,278 1,643 Total assets supporting experience-rated contractholder liabilities $ 21,302 $ 21,637 $ 21,364 $ 22,097 __________ (1) Includes publicly-traded agency pass-through securities and collateralized mortgage obligations. (2) Includes credit-tranched securities collateralized by sub-prime mortgages, auto loans, credit cards, education loans and other asset types.
Securities Concentrations of Credit Risk	As of the dates indicated, the Company’s exposure to concentrations of credit risk of single issuers greater than 10% of the Company’s stockholders’ equity included securities of the U.S. government and certain U.S. government agencies and securities guaranteed by the U.S. government, as well as the securities disclosed below: March 31, 2018 December 31, 2017 Amortized Fair Value Amortized Fair Value (in millions) Investments in Japanese government and government agency securities: Fixed maturities, available-for-sale $ 69,800 $ 82,712 $ 64,628 $ 76,311 Fixed maturities, held-to-maturity 893 1,170 844 1,103 Fixed maturities, trading 24 24 23 23 Assets supporting experience-rated contractholder liabilities 705 717 657 667 Total $ 71,422 $ 84,623 $ 66,152 $ 78,104 March 31, 2018 December 31, 2017 Amortized Fair Value Amortized Fair Value (in millions) Investments in South Korean government and government agency securities: Fixed maturities, available-for-sale $ 9,824 $ 11,124 $ 9,425 $ 10,989 Fixed maturities, held-to-maturity 0 0 0 0 Fixed maturities, trading 0 0 0 0 Assets supporting experience-rated contractholder liabilities 15 15 15 15 Total $ 9,839 $ 11,139 $ 9,440 $ 11,004
Commercial Mortgage and Other Loans	The following table sets forth the composition of “Commercial mortgage and other loans,” as of the dates indicated: March 31, 2018 December 31, 2017 Amount (in millions) % of Total Amount (in millions) % of Total Commercial mortgage and agricultural property loans by property type: Office $ 13,257 23.1 % $ 12,670 22.9 % Retail 8,751 15.3 8,543 15.5 Apartments/Multi-Family 15,670 27.4 15,465 28.0 Industrial 10,656 18.6 9,451 17.1 Hospitality 1,953 3.4 2,067 3.7 Other 3,806 6.6 3,888 7.0 Total commercial mortgage loans 54,093 94.4 52,084 94.2 Agricultural property loans 3,223 5.6 3,203 5.8 Total commercial mortgage and agricultural property loans by property type 57,316 100.0 % 55,287 100.0 % Valuation allowance (102 ) (100 ) Total net commercial mortgage and agricultural property loans by property type 57,214 55,187 Other loans: Uncollateralized loans 690 663 Residential property loans 196 196 Other collateralized loans 4 5 Total other loans 890 864 Valuation allowance (6 ) (6 ) Total net other loans 884 858 Total commercial mortgage and other loans(1) $ 58,098 $ 56,045 __________ (1) Includes loans held for sale which are carried at fair value and are collateralized primarily by apartment complexes. As of March 31, 2018 and December 31, 2017 , the net carrying value of these loans was $298 million and $593 million , respectively.
Allowance for Credit 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: March 31, 2018 Commercial Mortgage Loans Agricultural Property Loans Residential Property Loans Other Collateralized Loans Uncollateralized Loans Total (in millions) Allowance for credit losses: Balance, beginning of year $ 97 $ 3 $ 1 $ 0 $ 5 $ 106 Addition to (release of) allowance for losses 2 0 0 0 0 2 Charge-offs, net of recoveries 0 0 0 0 0 0 Change in foreign exchange 0 0 0 0 0 0 Total ending balance $ 99 $ 3 $ 1 $ 0 $ 5 $ 108 December 31, 2017 Commercial Mortgage Loans Agricultural Property Loans Residential Property Loans Other Collateralized Loans Uncollateralized Loans Total (in millions) Allowance for credit losses: Balance, beginning of year $ 96 $ 2 $ 2 $ 0 $ 6 $ 106 Addition to (release of) allowance for losses 2 1 (1 ) 0 (1 ) 1 Charge-offs, net of recoveries (1 ) 0 0 0 0 (1 ) Change in foreign exchange 0 0 0 0 0 0 Total ending balance $ 97 $ 3 $ 1 $ 0 $ 5 $ 106
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: March 31, 2018 Commercial Mortgage Loans Agricultural Property Loans Residential Property Loans Other Collateralized Loans Uncollateralized Loans Total (in millions) Allowance for credit losses: Individually evaluated for impairment $ 7 $ 0 $ 0 $ 0 $ 0 $ 7 Collectively evaluated for impairment 92 3 1 0 5 101 Total ending balance(1) $ 99 $ 3 $ 1 $ 0 $ 5 $ 108 Recorded investment(2): Individually evaluated for impairment $ 71 $ 35 $ 0 $ 0 $ 2 $ 108 Collectively evaluated for impairment 54,022 3,188 196 4 688 58,098 Total ending balance(1) $ 54,093 $ 3,223 $ 196 $ 4 $ 690 $ 58,206 __________ (1) As of March 31, 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 Residential Property Loans Other Collateralized Loans Uncollateralized Loans Total (in millions) Allowance for credit losses: Individually evaluated for impairment $ 7 $ 0 $ 0 $ 0 $ 0 $ 7 Collectively evaluated for impairment 90 3 1 0 5 99 Total ending balance(1) $ 97 $ 3 $ 1 $ 0 $ 5 $ 106 Recorded investment(2): Individually evaluated for impairment $ 75 $ 39 $ 0 $ 0 $ 2 $ 116 Collectively evaluated for impairment 52,009 3,164 196 5 661 56,035 Total ending balance(1) $ 52,084 $ 3,203 $ 196 $ 5 $ 663 $ 56,151 __________ (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 based upon the recorded investment gross of allowance for credit losses, as of the date indicated: Commercial mortgage loans March 31, 2018 Debt Service Coverage Ratio > 1.2X 1.0X to <1.2X < 1.0X Total (in millions) Loan-to-Value Ratio: 0%-59.99% $ 30,215 $ 682 $ 265 $ 31,162 60%-69.99% 14,694 621 156 15,471 70%-79.99% 6,524 702 10 7,236 80% or greater 84 116 24 224 Total commercial mortgage loans $ 51,517 $ 2,121 $ 455 $ 54,093 Agricultural property loans March 31, 2018 Debt Service Coverage Ratio > 1.2X 1.0X to <1.2X < 1.0X Total (in millions) Loan-to-Value Ratio: 0%-59.99% $ 2,974 $ 175 $ 2 $ 3,151 60%-69.99% 72 0 0 72 70%-79.99% 0 0 0 0 80% or greater 0 0 0 0 Total agricultural property loans $ 3,046 $ 175 $ 2 $ 3,223 Total commercial mortgage and agricultural property loans March 31, 2018 Debt Service Coverage Ratio > 1.2X 1.0X to <1.2X < 1.0X Total (in millions) Loan-to-Value Ratio: 0%-59.99% $ 33,189 $ 857 $ 267 $ 34,313 60%-69.99% 14,766 621 156 15,543 70%-79.99% 6,524 702 10 7,236 80% or greater 84 116 24 224 Total commercial mortgage and agricultural property loans $ 54,563 $ 2,296 $ 457 $ 57,316 The following tables set forth certain key credit quality indicators based upon the recorded investment gross of allowance for credit losses, as of the date indicated: Commercial mortgage loans December 31, 2017 Debt Service Coverage Ratio > 1.2X 1.0X to <1.2X < 1.0X Total (in millions) Loan-to-Value Ratio: 0%-59.99% $ 30,082 $ 639 $ 251 $ 30,972 60%-69.99% 13,658 530 121 14,309 70%-79.99% 5,994 514 29 6,537 80% or greater 93 54 119 266 Total commercial mortgage loans $ 49,827 $ 1,737 $ 520 $ 52,084 Agricultural property loans December 31, 2017 Debt Service Coverage Ratio > 1.2X 1.0X to <1.2X < 1.0X Total (in millions) Loan-to-Value Ratio: 0%-59.99% $ 2,988 $ 170 $ 5 $ 3,163 60%-69.99% 40 0 0 40 70%-79.99% 0 0 0 0 80% or greater 0 0 0 0 Total agricultural property loans $ 3,028 $ 170 $ 5 $ 3,203 Total commercial mortgage and agricultural property loans December 31, 2017 Debt Service Coverage Ratio > 1.2X 1.0X to <1.2X < 1.0X Total (in millions) Loan-to-Value Ratio: 0%-59.99% $ 33,070 $ 809 $ 256 $ 34,135 60%-69.99% 13,698 530 121 14,349 70%-79.99% 5,994 514 29 6,537 80% or greater 93 54 119 266 Total commercial mortgage and agricultural property loans $ 52,855 $ 1,907 $ 525 $ 55,287
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: March 31, 2018 Current 30-59 Days Past Due 60-89 Days Past Due 90 Days or More Past Due(1) Total Past Due Total Non-Accrual (in millions) Commercial mortgage loans $ 54,093 $ 0 $ 0 $ 0 $ 0 $ 54,093 $ 70 Agricultural property loans 3,222 0 0 1 1 3,223 23 Residential property loans 191 2 1 2 5 196 2 Other collateralized loans 4 0 0 0 0 4 0 Uncollateralized loans 690 0 0 0 0 690 0 Total $ 58,200 $ 2 $ 1 $ 3 $ 6 $ 58,206 $ 95 __________ (1) As of March 31, 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 Past Due Total Non-Accrual (in millions) Commercial mortgage loans $ 52,084 $ 0 $ 0 $ 0 $ 0 $ 52,084 $ 71 Agricultural property loans 3,201 0 0 2 2 3,203 23 Residential property loans 191 3 0 2 5 196 2 Other collateralized loans 5 0 0 0 0 5 0 Uncollateralized loans 663 0 0 0 0 663 0 Total $ 56,144 $ 3 $ 0 $ 4 $ 7 $ 56,151 $ 96 __________ (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: March 31, 2018 December 31, 2017 (in millions) LPs/LLCs: Equity method: Private equity $ 2,929 $ 2,954 Hedge funds 907 803 Real estate-related 1,153 972 Subtotal equity method 4,989 4,729 Fair value: Private equity 1,622 1,325 Hedge funds 2,387 2,419 Real estate-related 288 247 Subtotal fair value(1) 4,297 3,991 Total LPs/LLCs 9,286 8,720 Real estate held through direct ownership(2) 2,421 2,409 Derivative instruments 1,226 1,214 Other(3) 1,111 1,030 Total other invested assets(4) $ 14,044 $ 13,373 __________ (1) As of December 31, 2017 , $ 1,572 million was accounted for using the cost method. (2) As of March 31, 2018 and December 31, 2017 , real estate held through direct ownership had mortgage debt of $802 million and $799 million , respectively. (3) Primarily includes strategic investments made by investment management operations, leveraged leases and member and activity stock held in the Federal Home Loan Banks of New York and Boston. For additional information regarding the Company’s holdings in the Federal Home Loan Banks of New York and Boston, see Note 14 to the Consolidated Financial Statements included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2017 . (4) 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 2018 2017 (in millions) Fixed maturities, available-for-sale(1) $ 2,954 $ 2,795 Fixed maturities, held-to-maturity(1) 55 54 Fixed maturities, trading 31 42 Assets supporting experience-rated contractholder liabilities, at fair value 191 195 Equity securities, at fair value 35 90 Commercial mortgage and other loans 569 537 Policy loans 152 152 Other invested assets 141 332 Short-term investments and cash equivalents 72 44 Gross investment income 4,200 4,241 Less: investment expenses (202 ) (180 ) Net investment income(2) $ 3,998 $ 4,061 __________ (1) Includes income on credit-linked notes which are reported on the same financial statement line item as related surplus notes, as conditions are met for right to offset. (2) 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 2018 2017 (in millions) Fixed maturities(1) $ 78 $ 174 Equity securities(2) 0 256 Commercial mortgage and other loans 12 14 Investment real estate 2 6 LPs/LLCs 6 (11 ) Derivatives(3) 328 (11 ) Other (1 ) (1 ) Realized investment gains (losses), net $ 425 $ 427 __________ (1) Includes fixed maturity securities classified as available-for-sale and held-to-maturity 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 Investment	The following table sets forth net unrealized gains (losses) on investments, as of the dates indicated: March 31, December 31, (in millions) Fixed maturity securities, available-for-sale—with OTTI $ 234 $ 286 Fixed maturity securities, available-for-sale—all other 28,216 34,109 Equity securities, available-for-sale(1) 0 2,027 Derivatives designated as cash flow hedges(2) (622 ) (39 ) Other investments(3) 26 15 Net unrealized gains (losses) on investments $ 27,854 $ 36,398 __________ (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 5. (3) As of March 31, 2018 , there were no net unrealized losses on held-to-maturity securities that were previously transferred from available-for-sale. Includes net unrealized gains on certain joint ventures that are strategic in nature and are included in “Other assets.”
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. The following table sets forth the composition of “Securities sold under agreements to repurchase,” as of the dates indicated: March 31, 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 millions) U.S. Treasury securities and obligations of U.S. government authorities and agencies $ 8,150 $ 342 $ 8,492 $ 911 $ 7,349 $ 8,260 U.S. corporate public securities 1 0 1 1 0 1 Foreign corporate public securities 0 0 0 0 0 0 Residential mortgage-backed securities 117 23 140 0 139 139 Equity securities 0 0 0 0 0 0 Total securities sold under agreements to repurchase(1) $ 8,268 $ 365 $ 8,633 $ 912 $ 7,488 $ 8,400 __________ (1) The Company did not have any agreements with remaining contractual maturities of thirty days or greater, as of the dates indicated. 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: March 31, 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 millions) U.S. Treasury securities and obligations of U.S. government authorities and agencies $ 94 $ 321 $ 415 $ 87 $ 35 $ 122 Obligations of U.S. states and their political subdivisions 129 0 129 103 0 103 Foreign government bonds 287 0 287 335 0 335 U.S. corporate public securities 2,758 0 2,758 2,961 0 2,961 Foreign corporate public securities 630 0 630 655 0 655 Residential mortgage-backed securities 0 24 24 0 0 0 Equity securities 69 0 69 178 0 178 Total cash collateral for loaned securities(1) $ 3,967 $ 345 $ 4,312 $ 4,319 $ 35 $ 4,354 __________ (1) The Company did not have any agreements with remaining contractual maturities of thirty days or greater, as of the dates indicated.

Variable Interest Entities (Tab

Variable Interest Entities (Tables)	3 Months Ended
	Mar. 31, 2018
Variable Interest Entity, Measure of Activity [Abstract]
Schedule of Consolidated Variable Interest Entities	The table below reflects the carrying amount and balance sheet caption in which the assets and liabilities of consolidated VIEs are reported. The liabilities primarily comprise obligations under debt instruments issued by the VIEs. The creditors of these VIEs do not have recourse to the Company in excess of the assets contained within the VIEs. Consolidated VIEs for which the Company is the Investment Manager(1)(2) Other Consolidated VIEs(1) March 31, December 31, March 31, December 31, (in millions) Fixed maturities, available-for-sale $ 79 $ 69 $ 291 $ 275 Fixed maturities, held-to-maturity 88 83 858 810 Fixed maturities, trading 1,078 1,623 0 0 Assets supporting experience-rated contractholder liabilities 0 0 9 9 Equity securities 28 28 0 0 Commercial mortgage and other loans 649 617 0 0 Other invested assets 1,368 1,390 68 97 Cash and cash equivalents 140 164 0 0 Accrued investment income 5 7 4 4 Other assets 462 440 151 150 Total assets of consolidated VIEs $ 3,897 $ 4,421 $ 1,381 $ 1,345 Other liabilities $ 340 $ 433 $ 8 $ 0 Notes issued by consolidated VIEs(3) $ 954 $ 1,518 $ 0 $ 0 Total liabilities of consolidated VIEs $ 1,294 $ 1,951 $ 8 $ 0 __________ (1) Prior period amounts have been reclassified to conform to current period presentation. See Note 2 for additional information. (2) Total assets of consolidated VIEs reflect $1,815 million and $1,716 million as of March 31, 2018 and December 31, 2017 , respectively, related to VIEs whose beneficial interests are wholly-owned by consolidated subsidiaries. (3) Recourse is limited to the assets of the respective VIE and does not extend to the general credit of the Company . As of March 31, 2018 and December 31, 2017 , the maturities of these obligations were greater than five years.

Derivative Instruments (Tables)

Derivative Instruments (Tables)	3 Months Ended
	Mar. 31, 2018
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Schedule of Derivative Instruments	The table below provides a summary of the gross notional amount and fair value of derivatives contracts by the primary underlying risk, 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 non-performance risk (“NPR”). This netting impact results in total derivative assets of $1,219 million and $1,205 million as of March 31, 2018 and December 31, 2017 , respectively, and total derivative liabilities of $1,249 million and $643 million as of March 31, 2018 and December 31, 2017 , respectively, reflected in the Unaudited Interim Consolidated Statements of Financial Position. Primary Underlying Risk /Instrument Type March 31, 2018 December 31, 2017 Gross Fair Value Gross Fair Value Notional Assets Liabilities Notional Assets Liabilities (in millions) Derivatives Designated as Hedge Accounting Instruments: Interest Rate Interest Rate Swaps $ 2,993 $ 190 $ (75 ) $ 3,204 $ 271 $ (88 ) Foreign Currency Foreign Currency Forwards 595 0 (17 ) 545 0 (8 ) Currency/Interest Rate Foreign Currency Swaps 18,882 517 (1,184 ) 17,732 766 (735 ) Total Qualifying Hedges $ 22,470 $ 707 $ (1,276 ) $ 21,481 $ 1,037 $ (831 ) Derivatives Not Qualifying as Hedge Accounting Instruments: Interest Rate Interest Rate Swaps $ 155,142 $ 6,488 $ (3,707 ) $ 158,552 $ 7,958 $ (3,509 ) Interest Rate Futures 20,234 4 0 23,792 25 (1 ) Interest Rate Options 21,724 171 (245 ) 18,456 167 (203 ) Interest Rate Forwards 1,246 6 0 1,498 6 (2 ) Foreign Currency Foreign Currency Forwards 24,761 479 (235 ) 23,905 164 (254 ) Foreign Currency Options 34 0 0 59 0 0 Currency/Interest Rate Foreign Currency Swaps 13,830 486 (653 ) 13,777 822 (414 ) Credit Credit Default Swaps 1,277 13 (5 ) 1,314 21 (5 ) Equity Equity Futures 140 0 0 710 2 (2 ) Equity Options 53,400 636 (605 ) 36,007 588 (364 ) Total Return Swaps 22,336 609 (196 ) 15,558 17 (369 ) Commodity Commodity Futures 12 0 0 0 0 0 Synthetic GICs 76,159 6 0 77,290 0 (1 ) Total Non-Qualifying Derivatives $ 390,295 $ 8,898 $ (5,646 ) $ 370,918 $ 9,770 $ (5,124 ) Total Derivatives(1) $ 412,765 $ 9,605 $ (6,922 ) $ 392,399 $ 10,807 $ (5,955 ) __________ (1) Excludes embedded derivatives and associated reinsurance recoverables which contain multiple underlying risks. The fair value of these embedded derivatives was a net liability of $7,031 million and $8,748 million as of March 31, 2018 and December 31, 2017 , respectively, primarily included in “Future policy benefits.”
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. March 31, 2018 Gross Amounts of Recognized Financial Instruments Gross Amounts Offset in the Statements of Financial Position Net Amounts Presented in the Statements of Financial Position Financial Instruments/ Collateral(1) Net Amount (in millions) Offsetting of Financial Assets: Derivatives(1) $ 9,537 $ (8,382 ) $ 1,155 $ (756 ) $ 399 Securities purchased under agreement to resell 1,388 0 1,388 (1,388 ) 0 Total assets $ 10,925 $ (8,382 ) $ 2,543 $ (2,144 ) $ 399 Offsetting of Financial Liabilities: Derivatives(1) $ 6,913 $ (5,673 ) $ 1,240 $ (1,240 ) $ 0 Securities sold under agreement to repurchase 8,633 0 8,633 (8,633 ) 0 Total liabilities $ 15,546 $ (5,673 ) $ 9,873 $ (9,873 ) $ 0 December 31, 2017 Gross Amounts of Recognized Financial Instruments Gross Amounts Offset in the Statements of Financial Position Net Amounts Presented in the Statements of Financial Position Financial Net Amount (in millions) Offsetting of Financial Assets: Derivatives(1) $ 10,710 $ (9,600 ) $ 1,110 $ (625 ) $ 485 Securities purchased under agreement to resell 240 0 240 (240 ) 0 Total assets $ 10,950 $ (9,600 ) $ 1,350 $ (865 ) $ 485 Offsetting of Financial Liabilities: Derivatives(1) $ 5,948 $ (5,312 ) $ 636 $ (588 ) $ 48 Securities sold under agreement to repurchase 8,400 0 8,400 (8,400 ) 0 Total liabilities $ 14,348 $ (5,312 ) $ 9,036 $ (8,988 ) $ 48 __________ (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. March 31, 2018 Gross Amounts of Recognized Financial Instruments Gross Amounts Offset in the Statements of Financial Position Net Amounts Presented in the Statements of Financial Position Financial Instruments/ Collateral(1) Net Amount (in millions) Offsetting of Financial Assets: Derivatives(1) $ 9,537 $ (8,382 ) $ 1,155 $ (756 ) $ 399 Securities purchased under agreement to resell 1,388 0 1,388 (1,388 ) 0 Total assets $ 10,925 $ (8,382 ) $ 2,543 $ (2,144 ) $ 399 Offsetting of Financial Liabilities: Derivatives(1) $ 6,913 $ (5,673 ) $ 1,240 $ (1,240 ) $ 0 Securities sold under agreement to repurchase 8,633 0 8,633 (8,633 ) 0 Total liabilities $ 15,546 $ (5,673 ) $ 9,873 $ (9,873 ) $ 0 December 31, 2017 Gross Amounts of Recognized Financial Instruments Gross Amounts Offset in the Statements of Financial Position Net Amounts Presented in the Statements of Financial Position Financial Net Amount (in millions) Offsetting of Financial Assets: Derivatives(1) $ 10,710 $ (9,600 ) $ 1,110 $ (625 ) $ 485 Securities purchased under agreement to resell 240 0 240 (240 ) 0 Total assets $ 10,950 $ (9,600 ) $ 1,350 $ (865 ) $ 485 Offsetting of Financial Liabilities: Derivatives(1) $ 5,948 $ (5,312 ) $ 636 $ (588 ) $ 48 Securities sold under agreement to repurchase 8,400 0 8,400 (8,400 ) 0 Total liabilities $ 14,348 $ (5,312 ) $ 9,036 $ (8,988 ) $ 48 __________ (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 table provides 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 March 31, 2018 Realized Net Other Interest Interest AOCI(1) (in millions) Derivatives Designated as Hedge Accounting Instruments: Fair value hedges Interest Rate $ 17 $ (3 ) $ 0 $ 0 $ (83 ) $ 0 Currency 2 0 0 0 0 0 Total fair value hedges 19 (3 ) 0 0 (83 ) 0 Cash flow hedges Interest Rate 0 0 0 0 0 7 Currency 0 0 0 0 0 (8 ) Currency/Interest Rate 0 47 (91 ) 0 0 (582 ) Total cash flow hedges 0 47 (91 ) 0 0 (583 ) Net investment hedges Currency (2 ) 0 0 0 0 (2 ) Currency/Interest Rate 0 0 0 0 0 0 Total net investment hedges (2 ) 0 0 0 0 (2 ) Derivatives Not Qualifying as Hedge Accounting Instruments: Interest Rate (1,516 ) 0 0 0 0 0 Currency 412 0 1 0 0 0 Currency/Interest Rate (555 ) 0 (1 ) 0 0 0 Credit (5 ) 0 0 0 0 0 Equity 10 0 0 0 0 0 Commodity 0 0 0 0 0 0 Embedded Derivatives 1,979 0 0 0 0 0 Total non-qualifying hedges 325 0 0 0 0 0 Total $ 342 $ 44 $ (91 ) $ 0 $ (83 ) $ (585 ) Three Months Ended March 31, 2017 Realized Net Other Interest Interest AOCI(1) (in millions) Derivatives Designated as Hedge Accounting Instruments: Fair value hedges Interest Rate $ 8 $ (6 ) $ 0 $ 0 $ 0 $ 0 Currency 2 0 0 0 0 0 Total fair value hedges 10 (6 ) 0 0 0 0 Cash flow hedges Interest Rate 0 0 0 (1 ) 0 3 Currency/Interest Rate 0 44 (39 ) 0 0 (201 ) Total cash flow hedges 0 44 (39 ) (1 ) 0 (198 ) Net investment hedges Currency 0 0 0 0 0 (3 ) Currency/Interest Rate 0 0 0 0 0 0 Total net investment hedges 0 0 0 0 0 (3 ) Derivatives Not Qualifying as Hedge Accounting Instruments: Interest Rate (147 ) 0 0 0 0 0 Currency 38 0 (1 ) 0 0 0 Currency/Interest Rate (87 ) 0 0 0 0 0 Credit 10 0 0 0 0 0 Equity (704 ) 0 0 0 0 0 Commodity 0 0 0 0 0 0 Embedded Derivatives 876 0 0 0 0 0 Total non-qualifying hedges (14 ) 0 (1 ) 0 0 0 Total $ (4 ) $ 38 $ (40 ) $ (1 ) $ 0 $ (201 ) __________ (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 millions) Balance, December 31, 2017 $ (39 ) Net deferred gains/(losses) on cash flow hedges from January 1 to March 31, 2018 (635 ) Amount reclassified into current period earnings 52 Balance, March 31, 2018 $ (622 )

Fair Value of Assets and Liab27

Fair Value of Assets and Liabilities (Tables)	3 Months Ended
	Mar. 31, 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 March 31, 2018 Level 1 Level 2 Level 3 Netting(1) Total (in millions) Fixed maturities, available-for-sale: U.S. Treasury securities and obligations of U.S. government authorities and agencies $ 0 $ 24,962 $ 59 $ $ 25,021 Obligations of U.S. states and their political subdivisions 0 10,290 5 10,295 Foreign government bonds 0 110,197 128 110,325 U.S. corporate public securities 0 85,718 108 85,826 U.S. corporate private securities(2) 0 31,413 1,830 33,243 Foreign corporate public securities 0 29,110 68 29,178 Foreign corporate private securities 0 23,914 729 24,643 Asset-backed securities(3) 0 6,063 6,754 12,817 Commercial mortgage-backed securities 0 12,820 43 12,863 Residential mortgage-backed securities 0 3,317 102 3,419 Subtotal 0 337,804 9,826 347,630 Assets supporting experience-rated contractholder liabilities: U.S. Treasury securities and obligations of U.S. government authorities and agencies 0 199 0 199 Obligations of U.S. states and their political subdivisions 0 201 0 201 Foreign government bonds 0 884 220 1,104 Corporate securities 0 13,159 468 13,627 Asset-backed securities(3) 0 762 664 1,426 Commercial mortgage-backed securities 0 2,369 0 2,369 Residential mortgage-backed securities 0 908 0 908 Equity securities 1,390 257 5 1,652 All other(5) 0 16 7 23 Subtotal 1,390 18,755 1,364 21,509 Fixed maturities trading 0 2,681 204 2,885 Equity securities 5,865 639 785 7,289 Commercial mortgage and other loans 0 298 0 298 Other invested assets(6) 4 9,584 144 (8,382 ) 1,350 Short-term investments 2,693 1,590 10 4,293 Cash equivalents 1,771 4,824 0 6,595 Other assets 0 3 0 3 Separate account assets(7)(8) 43,896 228,810 2,360 275,066 Total assets $ 55,619 $ 604,988 $ 14,693 $ (8,382 ) $ 666,918 Future policy benefits(9) $ 0 $ 0 $ 6,981 $ $ 6,981 Other liabilities 5 6,922 56 (5,673 ) 1,310 Notes issued by consolidated VIEs 0 0 612 612 Total liabilities $ 5 $ 6,922 $ 7,649 $ (5,673 ) $ 8,903 As of December 31, 2017 Level 1 Level 2 Level 3 Netting(1) Total (in millions) Fixed maturities, available-for-sale: U.S. Treasury securities and obligations of U.S. government authorities and agencies $ 0 $ 26,086 $ 52 $ $ 26,138 Obligations of U.S. states and their political subdivisions 0 10,466 5 10,471 Foreign government bonds 0 103,271 148 103,419 U.S. corporate public securities 0 90,115 109 90,224 U.S. corporate private securities(2) 0 31,845 1,889 33,734 Foreign corporate public securities 0 29,329 79 29,408 Foreign corporate private securities 0 23,528 699 24,227 Asset-backed securities(3) 0 5,629 6,604 12,233 Commercial mortgage-backed securities 0 13,268 13 13,281 Residential mortgage-backed securities 0 3,547 98 3,645 Subtotal 0 337,084 9,696 346,780 Assets supporting experience-rated contractholder liabilities(4): U.S. Treasury securities and obligations of U.S. government authorities and agencies 0 201 0 201 Obligations of U.S. states and their political subdivisions 0 208 0 208 Foreign government bonds 0 834 223 1,057 Corporate securities 0 13,611 462 14,073 Asset-backed securities(3) 0 670 722 1,392 Commercial mortgage-backed securities 0 2,311 0 2,311 Residential mortgage-backed securities 0 965 1 966 Equity securities 1,381 258 4 1,643 All other(5) 25 105 7 137 Subtotal 1,406 19,163 1,419 21,988 Fixed maturities trading(4) 0 3,351 156 3,507 Equity securities(4) 5,978 556 795 7,329 Commercial mortgage and other loans 0 593 0 593 Other invested assets(4)(6) 32 10,768 137 (9,600 ) 1,337 Short-term investments(4) 3,931 1,850 8 5,789 Cash equivalents(4) 1,900 6,398 0 8,298 Other assets 0 1 13 14 Separate account assets(7)(8) 45,397 232,874 2,122 280,393 Total assets $ 58,644 $ 612,638 $ 14,346 $ (9,600 ) $ 676,028 Future policy benefits(9) $ 0 $ 0 $ 8,720 $ $ 8,720 Other liabilities 4 5,946 50 (5,312 ) 688 Notes issued by consolidated VIEs 0 0 1,196 1,196 Total liabilities $ 4 $ 5,946 $ 9,966 $ (5,312 ) $ 10,604 __________ (1) “Netting” amounts represent cash collateral of $2,709 million and $4,288 million as of March 31, 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) Excludes notes with both fair value and carrying amount of $2,846 million and $2,660 million , as of March 31, 2018 and December 31, 2017 , respectively, which have been offset with the associated payables under a netting agreement. (3) Includes credit-tranched securities collateralized by syndicated bank loans, sub-prime mortgages, auto loans, credit cards, education loans and other asset types. (4) Prior period amounts have been reclassified to conform to current period presentation. See Note 2 for details. (5) All other represents cash equivalents and short-term investments. (6) 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 March 31, 2018 and December 31, 2017 , the fair values of such investments were $4,297 million and $1,969 million respectively. (7) Separate account assets included in the fair value hierarchy exclude investments in entities that calculate net asset value 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 other invested assets, for which fair value is measured at NAV per share (or its equivalent). At March 31, 2018 and December 31, 2017 , the fair value of such investments was $25,519 million and $26,224 million , respectively. (8) 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. (9) As of March 31, 2018 , the net embedded derivative liability position of $6.9 billion includes $1.1 billion of embedded derivatives in an asset position and $8.0 billion of embedded derivatives in a liability position. As of December 31, 2017 , the net embedded derivative liability position of $8.7 billion includes $0.9 billion of embedded derivatives in an asset position and $9.6 billion of embedded derivatives in a liability position.
Fair Value, Transfers Between Level 1 and Level 2	The following table presents the transfers between Level 1 and Level 2 for dates indicated below: Three Months Ended March 31, 2018 2017 (in millions) Transferred from Level 1 to Level 2 $ 171 $ 46 Transferred from Level 2 to Level 1 $ 7 $ 57
Fair Value Inputs, Assets, Quantitative Information	The tables below present quantitative information on significant internally-priced Level 3 assets and liabilities. As of March 31, 2018 Fair Value Valuation Techniques Unobservable Inputs Minimum Maximum Weighted Average Impact of Increase in Input on Fair Value(1) (in millions) Assets: Corporate securities(2) $ 1,377 Discounted cash flow Discount rate 0.64% - 20% 7.41% Decrease Market comparables EBITDA multiples(3) 4.5X 7.6X 6.2X Increase Liquidation Liquidation value 13.31% - 13.70% 13.54% Increase Separate account assets-commercial mortgage loans(4) $ 798 Discounted cash flow Spread 1.02% - 2.69% 1.15% Decrease Liabilities: Future policy benefits(5) $ 6,981 Discounted cash flow Lapse rate(6) 1% - 12% Decrease Spread over LIBOR(7) 0.24% - 1.21% Decrease Utilization rate(8) 52% - 97% Increase Withdrawal rate See table footnote (9) below. Mortality rate(10) 0% - 14% Decrease Equity volatility curve 16% - 24% 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 millions) Assets: Corporate securities(2) $ 1,352 Discounted cash flow Discount rate 0.65% - 22% 7.20% Decrease Market comparables EBITDA multiples(3) 7.4X - 7.4X 7.4X Increase Liquidation Liquidation value 13.10% - 25.00% 14.68% Increase Separate account assets-commercial mortgage loans(4) $ 821 Discounted cash flow Spread 1.08% - 2.78% 1.20% Decrease Liabilities: Future policy benefits(5) $ 8,720 Discounted cash flow Lapse rate(6) 1% - 12% Decrease Spread over LIBOR(7) 0.12% - 1.10% Decrease Utilization rate(8) 52% - 97% Increase Withdrawal rate See table footnote (9) below. Mortality rate(10) 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, assets supporting experience-rated contractholder liabilities and fixed maturities trading. (3) Represents multiples of earnings before interest, taxes, depreciation and amortization (“EBITDA”), and are amounts used when the Company has determined that market participants would use such multiples when valuing the investments. (4) Changes in the fair value of separate account assets are borne by customers and thus are offset by changes in separate account liabilities on the Company’s Unaudited Interim Consolidated Statements of Financial Position. As a result, changes in value associated with these investments are not reflected in the Company’s Unaudited Interim Consolidated Statements of Operations. (5) 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. (6) 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. (7) 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. (8) 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. (9) 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 March 31, 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%. (10) Range reflects the mortality rate for the vast majority of business with living benefits, with policyholders ranging from 35 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 Inputs, Liabilities, Quantitative Information	The tables below present quantitative information on significant internally-priced Level 3 assets and liabilities. As of March 31, 2018 Fair Value Valuation Techniques Unobservable Inputs Minimum Maximum Weighted Average Impact of Increase in Input on Fair Value(1) (in millions) Assets: Corporate securities(2) $ 1,377 Discounted cash flow Discount rate 0.64% - 20% 7.41% Decrease Market comparables EBITDA multiples(3) 4.5X 7.6X 6.2X Increase Liquidation Liquidation value 13.31% - 13.70% 13.54% Increase Separate account assets-commercial mortgage loans(4) $ 798 Discounted cash flow Spread 1.02% - 2.69% 1.15% Decrease Liabilities: Future policy benefits(5) $ 6,981 Discounted cash flow Lapse rate(6) 1% - 12% Decrease Spread over LIBOR(7) 0.24% - 1.21% Decrease Utilization rate(8) 52% - 97% Increase Withdrawal rate See table footnote (9) below. Mortality rate(10) 0% - 14% Decrease Equity volatility curve 16% - 24% 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 millions) Assets: Corporate securities(2) $ 1,352 Discounted cash flow Discount rate 0.65% - 22% 7.20% Decrease Market comparables EBITDA multiples(3) 7.4X - 7.4X 7.4X Increase Liquidation Liquidation value 13.10% - 25.00% 14.68% Increase Separate account assets-commercial mortgage loans(4) $ 821 Discounted cash flow Spread 1.08% - 2.78% 1.20% Decrease Liabilities: Future policy benefits(5) $ 8,720 Discounted cash flow Lapse rate(6) 1% - 12% Decrease Spread over LIBOR(7) 0.12% - 1.10% Decrease Utilization rate(8) 52% - 97% Increase Withdrawal rate See table footnote (9) below. Mortality rate(10) 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, assets supporting experience-rated contractholder liabilities and fixed maturities trading. (3) Represents multiples of earnings before interest, taxes, depreciation and amortization (“EBITDA”), and are amounts used when the Company has determined that market participants would use such multiples when valuing the investments. (4) Changes in the fair value of separate account assets are borne by customers and thus are offset by changes in separate account liabilities on the Company’s Unaudited Interim Consolidated Statements of Financial Position. As a result, changes in value associated with these investments are not reflected in the Company’s Unaudited Interim Consolidated Statements of Operations. (5) 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. (6) 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. (7) 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. (8) 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. (9) 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 March 31, 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%. (10) Range reflects the mortality rate for the vast majority of business with living benefits, with policyholders ranging from 35 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. Transfers into Level 3 are generally the result of unobservable inputs utilized within valuation methodologies or the use of indicative broker quotes for assets that were previously valued using observable inputs. Transfers out of Level 3 are generally due to the use of observable inputs in valuation methodologies as well as the availability of pricing service information for certain assets that the Company can validate. For further information on valuation processes, see Note 20 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 March 31, 2018(1) Fixed Maturities Available-For-Sale U.S. government U.S. states Foreign government Corporate securities(2) Structured securities(3) (in millions) Fair Value, beginning of period $ 52 $ 5 $ 148 $ 2,776 $ 6,715 Total gains (losses) (realized/unrealized): Included in earnings: Realized investment gains (losses), net 0 0 0 (7 ) 13 Included in other comprehensive income (loss) 0 0 0 16 (30 ) Net investment income 0 0 0 2 2 Purchases 7 0 0 118 1,548 Sales 0 0 0 (1 ) (66 ) Issuances 0 0 0 0 0 Settlements 0 0 0 (169 ) (649 ) Foreign currency translation 0 0 1 12 26 Other(6) 0 0 0 0 4 Transfers into Level 3(7) 0 0 5 60 1,071 Transfers out of Level 3(7) 0 0 (26 ) (72 ) (1,735 ) Fair Value, end of period $ 59 $ 5 $ 128 $ 2,735 $ 6,899 Unrealized gains (losses) for assets still held(8): Included in earnings: Realized investment gains (losses), net $ 0 $ 0 $ 0 $ (9 ) $ 0 Three Months Ended March 31, 2018(1) Assets Supporting Experience-Rated Contractholder Liabilities Foreign government Corporate securities(2) Structured securities(3) Equity securities All other activity (in millions) Fair Value, beginning of period $ 223 $ 462 $ 722 $ 4 $ 7 Total gains (losses) (realized/unrealized): Included in earnings: Realized investment gains (losses), net 0 0 0 0 0 Other income (4 ) 1 0 1 0 Net investment income 1 0 0 0 0 Purchases 0 24 3 0 19 Sales 0 0 0 0 0 Issuances 0 0 0 0 0 Settlements 0 (18 ) (13 ) 0 (19 ) Foreign currency translation 0 0 0 0 0 Other(6) 0 0 0 0 0 Transfers into Level 3(7) 0 0 28 0 0 Transfers out of Level 3(7) 0 (1 ) (76 ) 0 0 Fair Value, end of period $ 220 $ 468 $ 664 $ 5 $ 7 Unrealized gains (losses) for assets still held(8): Included in earnings: Realized investment gains (losses), net $ 0 $ 0 $ 0 $ 0 $ 0 Other income $ (4 ) $ 0 $ 0 $ 1 $ 0 Three Months Ended March 31, 2018(1) Fixed maturities trading Equity securities Other invested assets Short-term investments Cash equivalents (in millions) Fair Value, beginning of period $ 156 $ 795 $ 137 $ 8 $ 0 Total gains (losses) (realized/unrealized): Included in earnings: Realized investment gains (losses), net 0 0 8 (1 ) 0 Other income (2 ) 14 0 0 0 Included in other comprehensive income (loss) 0 0 0 0 0 Net investment income 0 0 0 0 0 Purchases 40 7 1 14 0 Sales (4 ) (17 ) 0 0 0 Issuances 0 0 0 0 0 Settlements 0 (37 ) 0 (12 ) 0 Foreign currency translation 5 21 0 1 0 Other(6) 0 5 (2 ) 0 0 Transfers into Level 3(7) 11 0 0 0 0 Transfers out of Level 3(7) (2 ) (3 ) 0 0 0 Fair Value, end of period $ 204 $ 785 $ 144 $ 10 $ 0 Unrealized gains (losses) for assets still held(8): Included in earnings: Realized investment gains (losses), net $ 0 $ 0 $ 1 $ (1 ) $ 0 Other income $ 4 $ 13 $ 0 $ 0 $ 0 Three Months Ended March 31, 2018(1) Other Separate account assets(4) Future policy benefits Other liabilities Notes issued by consolidated VIEs (in millions) Fair Value, beginning of period $ 13 $ 2,122 $ (8,720 ) $ (50 ) $ (1,196 ) Total gains (losses) (realized/unrealized): Included in earnings: Realized investment gains (losses), net (13 ) 0 2,026 (19 ) (3 ) Other Income 0 0 0 0 0 Interest credited to policyholders’ account balances 0 (33 ) 0 0 0 Net investment income 0 0 0 0 0 Purchases 0 237 0 10 0 Sales 0 (8 ) 0 0 0 Issuances 0 0 (287 ) 0 0 Settlements 0 (121 ) 0 2 0 Foreign currency translation 0 0 0 0 0 Other(6) 0 0 0 1 587 Transfers into Level 3(7) 0 195 0 0 0 Transfers out of Level 3(7) 0 (32 ) 0 0 0 Fair Value, end of period $ 0 $ 2,360 $ (6,981 ) $ (56 ) $ (612 ) Unrealized gains (losses) for assets/liabilities still held(8): Included in earnings: Realized investment gains (losses), net $ (13 ) $ 0 $ 1,937 $ (13 ) $ (3 ) Other income $ 0 $ 0 $ 0 $ 0 $ 0 Interest credited to policyholders’ account balances $ 0 $ (26 ) $ 0 $ 0 $ 0 Three Months Ended March 31, 2017 Fixed Maturities Available-For-Sale U.S. U.S. Foreign Corporate securities(2) Structured securities(3) (in millions) Fair Value, beginning of period $ 0 $ 5 $ 124 $ 2,173 $ 4,555 Total gains (losses) (realized/unrealized): Included in earnings: Realized investment gains (losses), net 0 0 0 44 2 Included in other comprehensive income (loss) 0 0 0 13 0 Net investment income 0 0 0 9 3 Purchases 0 0 1 34 782 Sales 0 0 0 (141 ) (10 ) Issuances 0 0 0 0 0 Settlements 0 0 0 (59 ) (420 ) Foreign currency translation 0 0 5 9 12 Other(6) 10 0 0 (10 ) (1 ) Transfers into Level 3(7) 0 0 7 98 1,647 Transfers out of Level 3(7) 0 0 (1 ) (59 ) (659 ) Fair Value, end of period $ 10 $ 5 $ 136 $ 2,111 $ 5,911 Unrealized gains (losses) for assets still held(8): Included in earnings: Realized investment gains (losses), net $ 0 $ 0 $ 0 $ (8 ) $ 0 Three Months Ended March 31, 2017 Assets Supporting Experience-Rated Contractholder Liabilities(5) Foreign Corporate securities(2) Structured securities(3) (in millions) Fair Value, beginning of period $ 227 $ 154 $ 290 Total gains (losses) (realized/unrealized): Included in earnings: Realized investment gains (losses), net 0 0 0 Other income (1 ) 4 0 Net investment income 1 0 0 Purchases 0 31 190 Sales 0 (2 ) 0 Issuances 0 0 0 Settlements 0 (30 ) (8 ) Foreign currency translation 0 0 0 Other(6) 0 0 0 Transfers into Level 3(7) 0 21 233 Transfers out of Level 3(7) 0 (4 ) (29 ) Fair Value, end of period $ 227 $ 174 $ 676 Unrealized gains (losses) for assets still held(8): Included in earnings: Realized investment gains (losses), net $ 0 $ 0 $ 0 Other income $ (1 ) $ 2 $ 0 Three Months Ended March 31, 2017 Fixed maturities trading(5) Equity Other Short-term Cash equivalents (in millions) Fair Value, beginning of period $ 76 $ 752 $ 8 $ 1 $ 0 Total gains (losses) (realized/unrealized): Included in earnings: Realized investment gains (losses), net 0 0 0 0 0 Other income (1 ) 21 0 0 0 Included in other comprehensive income (loss) 0 11 0 0 0 Net investment income 0 0 0 0 2 Purchases 15 22 0 0 0 Sales (1 ) (28 ) 0 0 0 Issuances 0 0 0 0 0 Settlements (10 ) (6 ) 0 0 0 Foreign currency translation 1 9 0 0 0 Other(6) 1 0 71 0 4 Transfers into Level 3(7) 26 31 0 0 0 Transfers out of Level 3(7) (1 ) (1 ) 0 0 0 Fair Value, end of period $ 106 $ 811 $ 79 $ 1 $ 6 Unrealized gains (losses) for assets/liabilities still held(8): Included in earnings: Realized investment gains (losses), net $ 0 $ 0 $ (4 ) $ 0 0 Other income $ (1 ) $ 21 $ 0 $ 0 0 Three Months Ended March 31, 2017 Other Separate Future Other Notes issued by (in millions) Fair Value, beginning of period $ 0 $ 1,849 $ (8,238 ) $ (22 ) $ (1,839 ) Total gains (losses) (realized/unrealized): Included in earnings: Realized investment gains (losses), net (8 ) 0 875 (6 ) (15 ) Other Income 0 0 0 0 0 Interest credited to policyholders’ account balances 0 24 0 0 0 Net investment income 0 0 0 0 0 Purchases 8 155 0 0 0 Sales 0 (4 ) 0 0 0 Issuances 0 0 (275 ) 0 0 Settlements 0 (206 ) 0 1 0 Foreign currency translation 0 0 (2 ) 0 0 Other(6) 0 0 0 0 0 Transfers into Level 3(7) 0 191 0 0 0 Transfers out of Level 3(7) 0 (34 ) 0 0 0 Fair Value, end of period $ 0 $ 1,975 $ (7,640 ) $ (27 ) $ (1,854 ) Unrealized gains (losses) for assets/liabilities still held(8): Included in earnings: Realized investment gains (losses), net $ (8 ) $ 0 $ 813 $ (6 ) $ (15 ) Other Income $ 0 $ 0 $ 0 $ 0 $ 0 Interest credited to policyholders’ account balances $ 0 $ 23 $ 0 $ 0 $ 0 __________ (1) Current period amounts include one additional month of activity related to the elimination of Gibraltar Life’s reporting lag. (2) 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. (3) Includes asset-backed, commercial mortgage-backed and residential mortgage-backed securities. Prior period amounts were aggregated to conform to current period presentation. (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) Prior period amounts have been reclassified to conform to current period presentation. See Note 2 for details. (6) Other, for the period ended March 31, 2018 , primarily represents deconsolidation of a VIE and reclassifications of certain assets between reporting categories. Other, for the period ended March 31, 2017 , primarily represents consolidations of VIE and reclassifications of certain assets between reporting categories. (7) Transfers into or out of Level 3 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. (8) 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.
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. Transfers into Level 3 are generally the result of unobservable inputs utilized within valuation methodologies or the use of indicative broker quotes for assets that were previously valued using observable inputs. Transfers out of Level 3 are generally due to the use of observable inputs in valuation methodologies as well as the availability of pricing service information for certain assets that the Company can validate. For further information on valuation processes, see Note 20 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 March 31, 2018(1) Fixed Maturities Available-For-Sale U.S. government U.S. states Foreign government Corporate securities(2) Structured securities(3) (in millions) Fair Value, beginning of period $ 52 $ 5 $ 148 $ 2,776 $ 6,715 Total gains (losses) (realized/unrealized): Included in earnings: Realized investment gains (losses), net 0 0 0 (7 ) 13 Included in other comprehensive income (loss) 0 0 0 16 (30 ) Net investment income 0 0 0 2 2 Purchases 7 0 0 118 1,548 Sales 0 0 0 (1 ) (66 ) Issuances 0 0 0 0 0 Settlements 0 0 0 (169 ) (649 ) Foreign currency translation 0 0 1 12 26 Other(6) 0 0 0 0 4 Transfers into Level 3(7) 0 0 5 60 1,071 Transfers out of Level 3(7) 0 0 (26 ) (72 ) (1,735 ) Fair Value, end of period $ 59 $ 5 $ 128 $ 2,735 $ 6,899 Unrealized gains (losses) for assets still held(8): Included in earnings: Realized investment gains (losses), net $ 0 $ 0 $ 0 $ (9 ) $ 0 Three Months Ended March 31, 2018(1) Assets Supporting Experience-Rated Contractholder Liabilities Foreign government Corporate securities(2) Structured securities(3) Equity securities All other activity (in millions) Fair Value, beginning of period $ 223 $ 462 $ 722 $ 4 $ 7 Total gains (losses) (realized/unrealized): Included in earnings: Realized investment gains (losses), net 0 0 0 0 0 Other income (4 ) 1 0 1 0 Net investment income 1 0 0 0 0 Purchases 0 24 3 0 19 Sales 0 0 0 0 0 Issuances 0 0 0 0 0 Settlements 0 (18 ) (13 ) 0 (19 ) Foreign currency translation 0 0 0 0 0 Other(6) 0 0 0 0 0 Transfers into Level 3(7) 0 0 28 0 0 Transfers out of Level 3(7) 0 (1 ) (76 ) 0 0 Fair Value, end of period $ 220 $ 468 $ 664 $ 5 $ 7 Unrealized gains (losses) for assets still held(8): Included in earnings: Realized investment gains (losses), net $ 0 $ 0 $ 0 $ 0 $ 0 Other income $ (4 ) $ 0 $ 0 $ 1 $ 0 Three Months Ended March 31, 2018(1) Fixed maturities trading Equity securities Other invested assets Short-term investments Cash equivalents (in millions) Fair Value, beginning of period $ 156 $ 795 $ 137 $ 8 $ 0 Total gains (losses) (realized/unrealized): Included in earnings: Realized investment gains (losses), net 0 0 8 (1 ) 0 Other income (2 ) 14 0 0 0 Included in other comprehensive income (loss) 0 0 0 0 0 Net investment income 0 0 0 0 0 Purchases 40 7 1 14 0 Sales (4 ) (17 ) 0 0 0 Issuances 0 0 0 0 0 Settlements 0 (37 ) 0 (12 ) 0 Foreign currency translation 5 21 0 1 0 Other(6) 0 5 (2 ) 0 0 Transfers into Level 3(7) 11 0 0 0 0 Transfers out of Level 3(7) (2 ) (3 ) 0 0 0 Fair Value, end of period $ 204 $ 785 $ 144 $ 10 $ 0 Unrealized gains (losses) for assets still held(8): Included in earnings: Realized investment gains (losses), net $ 0 $ 0 $ 1 $ (1 ) $ 0 Other income $ 4 $ 13 $ 0 $ 0 $ 0 Three Months Ended March 31, 2018(1) Other Separate account assets(4) Future policy benefits Other liabilities Notes issued by consolidated VIEs (in millions) Fair Value, beginning of period $ 13 $ 2,122 $ (8,720 ) $ (50 ) $ (1,196 ) Total gains (losses) (realized/unrealized): Included in earnings: Realized investment gains (losses), net (13 ) 0 2,026 (19 ) (3 ) Other Income 0 0 0 0 0 Interest credited to policyholders’ account balances 0 (33 ) 0 0 0 Net investment income 0 0 0 0 0 Purchases 0 237 0 10 0 Sales 0 (8 ) 0 0 0 Issuances 0 0 (287 ) 0 0 Settlements 0 (121 ) 0 2 0 Foreign currency translation 0 0 0 0 0 Other(6) 0 0 0 1 587 Transfers into Level 3(7) 0 195 0 0 0 Transfers out of Level 3(7) 0 (32 ) 0 0 0 Fair Value, end of period $ 0 $ 2,360 $ (6,981 ) $ (56 ) $ (612 ) Unrealized gains (losses) for assets/liabilities still held(8): Included in earnings: Realized investment gains (losses), net $ (13 ) $ 0 $ 1,937 $ (13 ) $ (3 ) Other income $ 0 $ 0 $ 0 $ 0 $ 0 Interest credited to policyholders’ account balances $ 0 $ (26 ) $ 0 $ 0 $ 0 Three Months Ended March 31, 2017 Fixed Maturities Available-For-Sale U.S. U.S. Foreign Corporate securities(2) Structured securities(3) (in millions) Fair Value, beginning of period $ 0 $ 5 $ 124 $ 2,173 $ 4,555 Total gains (losses) (realized/unrealized): Included in earnings: Realized investment gains (losses), net 0 0 0 44 2 Included in other comprehensive income (loss) 0 0 0 13 0 Net investment income 0 0 0 9 3 Purchases 0 0 1 34 782 Sales 0 0 0 (141 ) (10 ) Issuances 0 0 0 0 0 Settlements 0 0 0 (59 ) (420 ) Foreign currency translation 0 0 5 9 12 Other(6) 10 0 0 (10 ) (1 ) Transfers into Level 3(7) 0 0 7 98 1,647 Transfers out of Level 3(7) 0 0 (1 ) (59 ) (659 ) Fair Value, end of period $ 10 $ 5 $ 136 $ 2,111 $ 5,911 Unrealized gains (losses) for assets still held(8): Included in earnings: Realized investment gains (losses), net $ 0 $ 0 $ 0 $ (8 ) $ 0 Three Months Ended March 31, 2017 Assets Supporting Experience-Rated Contractholder Liabilities(5) Foreign Corporate securities(2) Structured securities(3) (in millions) Fair Value, beginning of period $ 227 $ 154 $ 290 Total gains (losses) (realized/unrealized): Included in earnings: Realized investment gains (losses), net 0 0 0 Other income (1 ) 4 0 Net investment income 1 0 0 Purchases 0 31 190 Sales 0 (2 ) 0 Issuances 0 0 0 Settlements 0 (30 ) (8 ) Foreign currency translation 0 0 0 Other(6) 0 0 0 Transfers into Level 3(7) 0 21 233 Transfers out of Level 3(7) 0 (4 ) (29 ) Fair Value, end of period $ 227 $ 174 $ 676 Unrealized gains (losses) for assets still held(8): Included in earnings: Realized investment gains (losses), net $ 0 $ 0 $ 0 Other income $ (1 ) $ 2 $ 0 Three Months Ended March 31, 2017 Fixed maturities trading(5) Equity Other Short-term Cash equivalents (in millions) Fair Value, beginning of period $ 76 $ 752 $ 8 $ 1 $ 0 Total gains (losses) (realized/unrealized): Included in earnings: Realized investment gains (losses), net 0 0 0 0 0 Other income (1 ) 21 0 0 0 Included in other comprehensive income (loss) 0 11 0 0 0 Net investment income 0 0 0 0 2 Purchases 15 22 0 0 0 Sales (1 ) (28 ) 0 0 0 Issuances 0 0 0 0 0 Settlements (10 ) (6 ) 0 0 0 Foreign currency translation 1 9 0 0 0 Other(6) 1 0 71 0 4 Transfers into Level 3(7) 26 31 0 0 0 Transfers out of Level 3(7) (1 ) (1 ) 0 0 0 Fair Value, end of period $ 106 $ 811 $ 79 $ 1 $ 6 Unrealized gains (losses) for assets/liabilities still held(8): Included in earnings: Realized investment gains (losses), net $ 0 $ 0 $ (4 ) $ 0 0 Other income $ (1 ) $ 21 $ 0 $ 0 0 Three Months Ended March 31, 2017 Other Separate Future Other Notes issued by (in millions) Fair Value, beginning of period $ 0 $ 1,849 $ (8,238 ) $ (22 ) $ (1,839 ) Total gains (losses) (realized/unrealized): Included in earnings: Realized investment gains (losses), net (8 ) 0 875 (6 ) (15 ) Other Income 0 0 0 0 0 Interest credited to policyholders’ account balances 0 24 0 0 0 Net investment income 0 0 0 0 0 Purchases 8 155 0 0 0 Sales 0 (4 ) 0 0 0 Issuances 0 0 (275 ) 0 0 Settlements 0 (206 ) 0 1 0 Foreign currency translation 0 0 (2 ) 0 0 Other(6) 0 0 0 0 0 Transfers into Level 3(7) 0 191 0 0 0 Transfers out of Level 3(7) 0 (34 ) 0 0 0 Fair Value, end of period $ 0 $ 1,975 $ (7,640 ) $ (27 ) $ (1,854 ) Unrealized gains (losses) for assets/liabilities still held(8): Included in earnings: Realized investment gains (losses), net $ (8 ) $ 0 $ 813 $ (6 ) $ (15 ) Other Income $ 0 $ 0 $ 0 $ 0 $ 0 Interest credited to policyholders’ account balances $ 0 $ 23 $ 0 $ 0 $ 0 __________ (1) Current period amounts include one additional month of activity related to the elimination of Gibraltar Life’s reporting lag. (2) 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. (3) Includes asset-backed, commercial mortgage-backed and residential mortgage-backed securities. Prior period amounts were aggregated to conform to current period presentation. (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) Prior period amounts have been reclassified to conform to current period presentation. See Note 2 for details. (6) Other, for the period ended March 31, 2018 , primarily represents deconsolidation of a VIE and reclassifications of certain assets between reporting categories. Other, for the period ended March 31, 2017 , primarily represents consolidations of VIE and reclassifications of certain assets between reporting categories. (7) Transfers into or out of Level 3 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. (8) 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.
Fair Value Assets and Liabilities Measured on Recurring Basis, Derivatives	The following tables present the balances of derivative assets and liabilities measured at fair value on a recurring basis, as of the date indicated, by primary underlying risk. These tables include NPR and exclude embedded derivatives and associated reinsurance recoverables. The derivative assets and liabilities shown below are included in “Other invested assets” or “Other liabilities” in the tables contained within the sections “—Assets and Liabilities by Hierarchy Level” and “—Changes in Level 3 Assets and Liabilities,” above. As of March 31, 2018 Level 1 Level 2 Level 3 Netting(1) Total (in millions) Derivative Assets: Interest Rate $ 4 $ 6,849 $ 7 $ $ 6,860 Currency 0 480 0 480 Credit 0 13 0 13 Currency/Interest Rate 0 1,003 0 1,003 Equity 0 1,239 6 1,245 Commodity 0 0 0 0 Netting(1) (8,382 ) (8,382 ) Total derivative assets $ 4 $ 9,584 $ 13 $ (8,382 ) $ 1,219 Derivative Liabilities: Interest Rate $ 0 $ 4,024 $ 1 $ $ 4,025 Currency 0 253 0 253 Credit 0 5 0 5 Currency/Interest Rate 0 1,837 0 1,837 Equity 0 802 0 802 Commodity 0 0 0 0 Netting(1) (5,673 ) (5,673 ) Total derivative liabilities $ 0 $ 6,921 $ 1 $ (5,673 ) $ 1,249 As of December 31, 2017 Level 1 Level 2 Level 3 Netting(1) Total (in millions) Derivative Assets: Interest Rate $ 25 $ 8,399 $ 0 $ $ 8,424 Currency 0 165 0 165 Credit 0 21 0 21 Currency/Interest Rate 0 1,588 0 1,588 Equity 2 595 10 607 Commodity 0 0 0 0 Netting(1) (9,600 ) (9,600 ) Total derivative assets $ 27 $ 10,768 $ 10 $ (9,600 ) $ 1,205 Derivative Liabilities: Interest Rate $ 1 $ 3,800 $ 3 $ $ 3,804 Currency 0 262 0 262 Credit 0 5 0 5 Currency/Interest Rate 0 1,149 0 1,149 Equity 2 733 0 735 Commodity 0 0 0 0 Netting(1) (5,312 ) (5,312 ) Total derivative liabilities $ 3 $ 5,949 $ 3 $ (5,312 ) $ 643 __________ (1) “Netting” amounts represent cash collateral and the impact of offsetting asset and liability positions held with the same counterparty, subject to master netting agreement.
Fair Value Assets and Liabilities Measured on Recurring Basis Unobservable Input Reconciliation, Derivatives	The following tables provide a summary of the changes in fair value of Level 3 derivative 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. Three Months Ended Net Derivative- Equity Net Derivative- Interest Rate (in millions) Fair Value, beginning of period $ 10 $ (3 ) Total gains (losses) (realized/unrealized): Included in earnings: Realized investment gains (losses), net 0 9 Other income 0 0 Purchases 0 0 Sales 0 0 Issuances 0 0 Settlements 0 0 Foreign currency translation 0 0 Other(1) (5 ) 0 Transfers into Level 3(2) 1 0 Transfers out of Level 3(2) 0 0 Fair Value, end of period $ 6 $ 6 Unrealized gains (losses) for assets still held: Included in earnings: Realized investment gains (losses), net $ 1 $ 8 Other income $ 0 $ 0 Three Months Ended Net Derivative- Equity Net Derivative- Interest Rate (in millions) Fair Value, beginning of period $ 0 $ 4 Total gains (losses) (realized/unrealized): Included in earnings: Realized investment gains (losses), net 0 (1 ) Other income 0 0 Purchases 0 0 Sales 0 0 Issuances 0 0 Settlements 0 0 Other 0 0 Transfers into Level 3(2) 0 0 Transfers out of Level 3(2) 0 0 Fair Value, end of period $ 0 $ 3 Unrealized gains (losses) for assets still held: Included in earnings: Realized investment gains (losses), net $ 0 $ (1 ) Other income $ 0 $ 0 __________ (1) Represents conversion of warrants to equity shares. (2) Transfers into or out of Level 3 are generally reported at the value as of the beginning of the quarter in which the transfer occur
Fair Value Measurements, Nonrecurring	The following table represents information for assets measured at fair value on a nonrecurring basis. The fair value measurement is nonrecurring as these assets are measured at fair value only when there is an evidence of impairment. Assets included in the table are those that were impaired during the respective reporting periods and that are still held as of the reporting date. The estimated fair values for these amounts were determined using significant unobservable inputs (Level 3). Three Months Ended 2018 2017 (in millions) Realized investment gains (losses) net: Commercial mortgage loans(1) $ 0 $ 0 Mortgage servicing rights(2) $ 2 $ 2 Cost method investments(3) $ 0 $ (10 ) March 31, 2018 December 31, 2017 (in millions) Carrying value after measurement as of period end: Commercial mortgage loans(1) $ 63 $ 64 Mortgage servicing rights(2) $ 62 $ 60 Cost method investments(3) $ 0 $ 150 __________ (1) Commercial mortgage loans are valued based on discounted cash flows utilizing market rates or the fair value of the underlying real estate collateral. (2) Mortgage servicing rights are valued using a discounted cash flow model. The model incorporates assumptions for servicing revenues, which are adjusted for expected prepayments, delinquency rates, escrow deposit income and estimated loan servicing expenses. The discount rates incorporated into the model are determined based on the estimated returns a market participant would require for this business plus a liquidity and risk premium. This estimate includes available relevant data from any active market sales of mortgage servicing rights. (3) Due to the adoption of ASU 2016-01 effective January 1, 2018, LPs/LLCs (formerly accounted for under the cost method) are carried at fair value at each reporting date with changes in fair value reported in “Other income”. Therefore, these assets are no longer reported in this table because they are no longer carried at fair value on a non-recurring basis.
Fair Value, Option	The following tables present information regarding assets and liabilities where the fair value option has been elected. Three Months Ended 2018 2017 (in millions) Assets: Other invested assets (2): Changes in fair value $ 0 $ 54 Liabilities: Notes issued by consolidated VIEs: Changes in fair value $ 3 $ 15 Three Months Ended 2018 2017 (in millions) Commercial mortgage and other loans: Interest income $ 2 $ 2 Notes issued by consolidated VIEs: Interest expense $ 9 $ 22 March 31, 2018 December 31, 2017 (in millions) Commercial mortgage and other loans(1): Fair value as of period end $ 298 $ 593 Aggregate contractual principal as of period end $ 292 $ 582 Other invested assets (2): Fair value as of period end $ 0 $ 1,945 Notes issued by consolidated VIEs: Fair value as of period end $ 612 $ 1,196 Aggregate contractual principal as of period end $ 632 $ 1,233 __________ (1) As of March 31, 2018 , for loans for which the fair value option has been elected, there were no loans in non-accrual status and none of the loans were more than 90 days past due and still accruing. (2) LPs/LLCs are reported at fair value due to adoption of ASU 2016-01, which in prior period were reported at fair value option. See Note 2 for details.
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. March 31, 2018(1) Fair Value Carrying Amount(2) Level 1 Level 2 Level 3 Total Total (in millions) Assets: Fixed maturities, held-to-maturity(3) $ 0 $ 1,551 $ 960 $ 2,511 $ 2,120 Assets supporting experience-rated contractholders liabilities 98 30 0 128 128 Commercial mortgage and other loans 0 134 58,199 58,333 57,800 Policy loans 1 0 12,035 12,036 12,036 Other invested assets 0 57 0 57 57 Short-term investments 1,433 26 0 1,459 1,459 Cash and cash equivalents 7,742 1,339 0 9,081 9,081 Accrued investment income 0 3,169 0 3,169 3,169 Other assets 81 2,498 665 3,244 3,244 Total assets $ 9,355 $ 8,804 $ 71,859 $ 90,018 $ 89,094 Liabilities: Policyholders’ account balances—investment contracts $ 0 $ 32,936 $ 66,895 $ 99,831 $ 100,486 Securities sold under agreements to repurchase 0 8,633 0 8,633 8,633 Cash collateral for loaned securities 0 4,312 0 4,312 4,312 Short-term debt 0 1,353 32 1,385 1,383 Long-term debt(5) 1,294 16,667 1,976 19,937 18,143 Notes issued by consolidated VIEs 0 0 342 342 342 Other liabilities 0 6,226 694 6,920 6,920 Separate account liabilities—investment contracts 0 69,950 29,363 99,313 99,313 Total liabilities $ 1,294 $ 140,077 $ 99,302 $ 240,673 $ 239,532 December 31, 2017(1) Fair Value Carrying Amount(2) Level 1 Level 2 Level 3 Total Total (in millions) Assets: Fixed maturities, held-to-maturity(3) $ 0 $ 1,484 $ 946 $ 2,430 $ 2,049 Assets supporting experience-rated contractholders liabilities(4) 58 51 0 109 109 Commercial mortgage and other loans 0 129 56,619 56,748 55,452 Policy loans 1 0 11,890 11,891 11,891 Short-term investments 989 22 0 1,011 1,011 Cash and cash equivalents 5,997 195 0 6,192 6,192 Accrued investment income 0 3,325 0 3,325 3,325 Other assets 45 2,385 685 3,115 3,115 Total assets $ 7,090 $ 7,591 $ 70,140 $ 84,821 $ 83,144 Liabilities: Policyholders’ account balances—investment contracts $ 0 $ 33,045 $ 67,141 $ 100,186 $ 99,948 Securities sold under agreements to repurchase 0 8,400 0 8,400 8,400 Cash collateral for loaned securities 0 4,354 0 4,354 4,354 Short-term debt 0 1,384 0 1,384 1,380 Long-term debt(5) 1,296 16,369 2,095 19,760 17,172 Notes issued by consolidated VIEs 0 0 322 322 322 Other liabilities 0 6,002 715 6,717 6,717 Separate account liabilities—investment contracts 0 71,336 30,490 101,826 101,826 Total liabilities $ 1,296 $ 140,890 $ 100,763 $ 242,949 $ 240,119 __________ (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 $1,795 million and $1,571 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 March 31, 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. (3) As of March 31, 2018 , excludes notes with fair value and carrying amount of $4,812 million and $4,753 million , respectively. As of December 31, 2017 , excludes notes with fair value and carrying amount of $4,913 million and $4,627 million , respectively. These amounts have been offset with the associated payables under a netting agreement. (4) Prior period amounts have been reclassified to conform to current period presentation. See Note 2 for details. (5) As of March 31, 2018 , includes notes with fair value and carrying amount of $7,658 million and $7,599 million , respectively. As of December 31, 2017 , includes notes with fair value and carrying amount of $7,577 million and $7,287 million , respectively. These amounts have been offset with the associated receivables under a netting agreement.

Closed Block (Tables)

Closed Block (Tables)	3 Months Ended
	Mar. 31, 2018
Closed Block Disclosure [Abstract]
Schedule of Closed Block Liabilities and Assets	Closed Block liabilities and assets designated to the Closed Block, as well as maximum future earnings to be recognized from these liabilities and assets, are as follows: March 31, December 31, (in millions) Closed Block liabilities Future policy benefits $ 48,631 $ 48,870 Policyholders’ dividends payable 860 829 Policyholders’ dividend obligation 4,433 5,446 Policyholders’ account balances 5,120 5,146 Other Closed Block liabilities 5,165 5,070 Total Closed Block liabilities 64,209 65,361 Closed Block assets Fixed maturities, available-for-sale, at fair value 39,858 41,043 Fixed maturities, trading, at fair value(1) 205 339 Equity securities, at fair value(1) 2,309 2,340 Commercial mortgage and other loans 9,027 9,017 Policy loans 4,495 4,543 Other invested assets(1) 3,407 3,159 Short-term investments 413 632 Total investments 59,714 61,073 Cash and cash equivalents 1,020 789 Accrued investment income 491 474 Other Closed Block assets 222 249 Total Closed Block assets 61,447 62,585 Excess of reported Closed Block liabilities over Closed Block assets 2,762 2,776 Portion of above representing accumulated other comprehensive income: Net unrealized investment gains (losses) 1,777 3,627 Allocated to policyholder dividend obligation (1,812 ) (3,656 ) Future earnings to be recognized from Closed Block assets and Closed Block liabilities $ 2,727 $ 2,747
Schedule of Closed Block Dividend Obligation	Information regarding the policyholder dividend obligation is as follows: Three Months Ended (in millions) Balance, December 31, 2017 $ 5,446 Cumulative-effect adjustment from the adoption of ASU 2016-01(1) 157 Impact from earnings allocable to policyholder dividend obligation (139 ) Change in net unrealized investment gains (losses) allocated to policyholder dividend obligation (1,031 ) Balance, March 31, 2018 $ 4,433 __________ (1) See Note 2 for details.
Schedule of Closed Block Revenues Benefits Expenses	Closed Block revenues and benefits and expenses are as follows for the periods indicated: Three Months Ended 2018 2017 (in millions) Revenues Premiums $ 551 $ 605 Net investment income 597 650 Realized investment gains (losses), net (2 ) 273 Other income (loss) 21 34 Total Closed Block revenues 1,167 1,562 Benefits and Expenses Policyholders’ benefits 727 789 Interest credited to policyholders’ account balances 33 33 Dividends to policyholders 308 593 General and administrative expenses 93 97 Total Closed Block benefits and expenses 1,161 1,512 Closed Block revenues, net of Closed Block benefits and expenses, before income taxes 6 50 Income tax expense (benefit) (9 ) 37 Closed Block revenues, net of Closed Block benefits and expenses and income taxes $ 15 $ 13

Income Taxes (Tables)

Income Taxes (Tables)	3 Months Ended
	Mar. 31, 2018
Income Tax Disclosure [Abstract]
Cumulative Impact of the Tax Act of 2017	The cumulative financial statement impact related to the Tax Act of 2017 as of March 31, 2018 was as follows: Twelve Months Ended December 31, 2017 Three Months Ended March 31, 2018 Total (in millions) Deferred tax revaluation from 35% to 21% $ (1,592 ) $ 4 $ (1,588 ) Adoption of modified territorial system (1,785 ) (24 ) (1,809 ) Deemed repatriation 497 0 497 Total provision for income tax expense (benefit) $ (2,880 ) $ (20 ) $ (2,900 )

Short-Term and Long-Term Debt (

Short-Term and Long-Term Debt (Tables)	3 Months Ended
	Mar. 31, 2018
Debt Disclosure [Abstract]
Schedule of Short-term Debt	The table below presents the Company’s short-term debt as of the dates indicated: March 31, 2018 December 31, 2017 ($ in millions) Commercial paper: Prudential Financial $ 25 $ 50 Prudential Funding, LLC 496 500 Subtotal commercial paper 521 550 Current portion of long-term debt(1) 862 830 Total short-term debt(2) $ 1,383 $ 1,380 Supplemental short-term debt information: Portion of commercial paper borrowings due overnight $ 85 $ 277 Daily average commercial paper outstanding $ 1,179 $ 1,110 Weighted average maturity of outstanding commercial paper, in days 20 22 Weighted average interest rate on outstanding short-term debt(3) 1.47 % 0.99 % __________ (1) Includes $32 million that has recourse only to real estate investment property at March 31, 2018. (2) Includes Prudential Financial debt of $855 million and $880 million at March 31, 2018 and December 31, 2017 , respectively. (3) Excludes the current portion of long-term debt.
Schedule of Long-term Debt	The table below presents the Company’s long-term debt as of the dates indicated: March 31, 2018 December 31, 2017 (in millions) Fixed-rate notes: Surplus notes $ 841 $ 840 Surplus notes subject to set-off arrangements(1) 5,499 5,187 Senior notes 9,876 8,882 Mortgage debt(2) 244 226 Floating-rate notes: Surplus notes 0 0 Surplus notes subject to set-off arrangements(1) 2,100 2,100 Senior notes 29 29 Mortgage debt(3) 526 573 Junior subordinated notes(4) 6,627 6,622 Subtotal 25,742 24,459 Less: assets under set-off arrangements(1) 7,599 7,287 Total long-term debt(5) $ 18,143 $ 17,172 __________ (1) The surplus notes have corresponding assets where rights to set-off exist, thereby reducing the amount of surplus notes included in long-term debt. (2) Includes $109 million and $107 million of debt denominated in foreign currency at March 31, 2018 and December 31, 2017 , respectively. (3) Includes $222 million and $245 million of debt denominated in foreign currency at March 31, 2018 and December 31, 2017 , respectively. (4) Includes Prudential Financial debt of $6,568 million and subsidiary debt of $59 million denominated in foreign currency at March 31, 2018. (5) Includes Prudential Financial debt of $16,301 million and $15,304 million at March 31, 2018 and December 31, 2017 , respective

Employee Benefit Plans (Tables)

Employee Benefit Plans (Tables)	3 Months Ended
	Mar. 31, 2018
Retirement Benefits [Abstract]
Schedule of Net Benefit Costs	Net periodic (benefit) cost included in “General and administrative expenses” includes the following components: Three Months Ended March 31, Pension Benefits Other Postretirement Benefits 2018 2017 2018 2017 (in millions) Components of net periodic (benefit) cost Service cost $ 79 $ 71 $ 6 $ 5 Interest cost 112 119 18 20 Expected return on plan assets (204 ) (195 ) (27 ) (25 ) Amortization of prior service cost (1 ) (1 ) 0 0 Amortization of actuarial (gain) loss, net 53 48 4 9 Settlements 0 0 0 0 Special termination benefits 0 3 0 0 Net periodic (benefit) cost $ 39 $ 45 $ 1 $ 9

Equity (Tables)

Equity (Tables)	3 Months Ended
	Mar. 31, 2018
Stockholders' Equity Note [Abstract]
Common Stock Disclosure	The changes in the number of shares of Common Stock issued, held in treasury and outstanding, are as follows for the periods indicated: Common Stock Issued Held In Treasury Outstanding (in millions) Balance, December 31, 2017 660.1 237.5 422.6 Common Stock issued 0.0 0.0 0.0 Common Stock acquired 0.0 3.3 (3.3 ) Stock-based compensation programs(1) 0.0 (1.7 ) 1.7 Balance, March 31, 2018 660.1 239.1 421.0 __________ (1) Represents net shares issued from treasury pursuant to the Company’s stock-based compensation programs.
Components of Accumulated Other Comprehensive Income (Loss)	The balance of and changes in each component of “Accumulated other comprehensive income (loss) attributable to Prudential Financial, Inc.” for the three months ended March 31, 2018 and 2017 , are as follows: Accumulated Other Comprehensive Income (Loss) Attributable to Prudential Financial, Inc. Foreign Currency Translation Adjustment Net Unrealized Investment Gains (Losses)(1) Pension and Postretirement Unrecognized Net Periodic Benefit (Cost) Total Accumulated Other Comprehensive Income (Loss) (in millions) Balance, December 31, 2017 $ (269 ) $ 19,968 $ (2,625 ) $ 17,074 Change in OCI before reclassifications 649 (4,640 ) (2 ) (3,993 ) Amounts reclassified from AOCI 0 (26 ) 56 30 Income tax benefit (expense) 8 845 (9 ) 844 Cumulative effect of adoption of ASU 2016-01 0 (847 ) 0 (847 ) Cumulative effect of adoption of ASU 2018-02 (231 ) 2,282 (398 ) 1,653 Balance, March 31, 2018 $ 157 $ 17,582 $ (2,978 ) $ 14,761 Accumulated Other Comprehensive Income (Loss) Attributable to Prudential Financial, Inc. Foreign Currency Translation Adjustment Net Unrealized Investment Gains (Losses)(1) Pension and Postretirement Unrecognized Net Periodic Benefit (Cost) Total Accumulated Other Comprehensive Income (Loss) (in millions) Balance, December 31, 2016 $ (973 ) $ 18,171 $ (2,577 ) $ 14,621 Change in OCI before reclassifications 570 (319 ) (12 ) 239 Amounts reclassified from AOCI 1 (490 ) 56 (433 ) Income tax benefit (expense) (62 ) 293 (15 ) 216 Balance, March 31, 2017 $ (464 ) $ 17,655 $ (2,548 ) $ 14,643 __________ (1) Includes cash flow hedges of $(622) million and $(39) million as of March 31, 2018 and December 31, 2017 , respectively, and $1,118 million and $1,316 million as of March 31, 2017 and December 31, 2016 , respectively.
Reclassification Out Of Accumulated Other Comprehensive Income (Loss)	Reclassifications out of Accumulated Other Comprehensive Income (Loss) Three Months Ended Affected line item in Consolidated Statements of Operations 2018 2017 (in millions) Amounts reclassified from AOCI(1)(2): Foreign currency translation adjustment: Foreign currency translation adjustments $ 0 $ (1 ) Realized investment gains (losses), net Foreign currency translation adjustments 0 0 Other income Total foreign currency translation adjustment 0 (1 ) Net unrealized investment gains (losses): Cash flow hedges—Interest rate 0 (1 ) (3) Cash flow hedges—Currency (3 ) 0 (3) Cash flow hedges—Currency/Interest rate (49 ) 61 (3) Net unrealized investment gains (losses) on available-for-sale securities 78 430 Total net unrealized investment gains (losses) 26 490 (4) Amortization of defined benefit pension items: Prior service cost 1 1 (5) Actuarial gain (loss) (57 ) (57 ) (5) Total amortization of defined benefit pension items (56 ) (56 ) Total reclassifications for the period $ (30 ) $ 433 __________ (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 5 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 and other costs, future policy benefits and policyholders’ dividends. (5) See Note 10 for information on employee benefit plans.
OTTI Net Unrealized Investment Gain (Loss) 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 DAC, DSI, VOBA and Reinsurance Recoverables Future Policy Benefits, Policyholders’ Account Balances and Reinsurance Payables Policyholders’ Dividends Deferred Accumulated Other Comprehensive Income (Loss) Related to Net Unrealized Investment Gains (Losses) (in millions) Balance, December 31, 2017 $ 286 $ (2 ) $ 3 $ (46 ) $ (94 ) $ 147 Net investment gains (losses) on investments arising during the period (10 ) 6 (4 ) Reclassification adjustment for (gains) losses included in net income (41 ) 24 (17 ) Reclassification adjustment for OTTI losses excluded from net income(1) (1 ) 1 0 Impact of net unrealized investment (gains) losses on DAC, DSI, VOBA and reinsurance recoverables 0 0 0 Impact of net unrealized investment (gains) losses on future policy benefits and policyholders’ account balances and reinsurance payables 0 0 0 Impact of net unrealized investment (gains) losses on policyholders’ dividends 17 (8 ) 9 Balance, March 31, 2018 $ 234 $ (2 ) $ 3 $ (29 ) $ (71 ) $ 135 __________ (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 Gain (Loss) AOCI Rollforward	All Other Net Unrealized Investment Gains (Losses) in AOCI Net Unrealized Gains (Losses) on Investments(1) DAC, DSI, VOBA and Reinsurance Recoverables Future Policy Benefits, Policyholders’ Account Balances and Reinsurance Payables Policyholders’ Dividends Deferred Income Tax (Liability) Benefit Accumulated Other Comprehensive Income (Loss) Related to Net Unrealized Investment Gains (Losses) (in millions) Balance, December 31, 2017 $ 36,112 $ (1,580 ) $ (1,243 ) $ (3,631 ) $ (9,837 ) $ 19,821 Net investment gains (losses) on investments arising during the period (6,466 ) 2,026 (4,440 ) Reclassification adjustment for (gains) losses included in net income 15 (8 ) 7 Reclassification adjustment for OTTI losses excluded from net income(2) 1 (1 ) 0 Impact of net unrealized investment (gains) losses on DAC, DSI, VOBA and reinsurance recoverables 544 (203 ) 341 Impact of net unrealized investment (gains) losses on future policy benefits and policyholders’ account balances and reinsurance payables 257 (137 ) 120 Impact of net unrealized investment (gains) losses on policyholders’ dividends 1,018 (685 ) 333 Cumulative effect of adoption of ASU 2016-01 (2,042 ) 813 212 (1,017 ) Cumulative effect of adoption of ASU 2018-02 2,282 2,282 Balance, March 31, 2018 $ 27,620 $ (1,036 ) $ (986 ) $ (1,800 ) $ (6,351 ) $ 17,447 __________ (1) Includes cash flow hedges. See Note 5 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.

Earnings Per Share (Tables)

Earnings Per Share (Tables)	3 Months Ended
	Mar. 31, 2018
Earnings Per Share [Abstract]
Reconciliation of Earnings Per Share	A reconciliation of the numerators and denominators of the basic and diluted per share computations of Common Stock based on the consolidated earnings of Prudential Financial for the periods indicated, is as follows: Three Months Ended March 31, 2018 2017 Income Weighted Per Share Income Weighted Per Share (in millions, except per share amounts) Basic earnings per share Net income (loss) $ 1,364 $ 1,372 Less: Income (loss) attributable to noncontrolling interests 1 3 Less: Dividends and undistributed earnings allocated to participating unvested share-based payment awards 16 17 Net income (loss) attributable to Prudential Financial available to holders of Common Stock $ 1,347 422.0 $ 3.19 $ 1,352 429.9 $ 3.14 Effect of dilutive securities and compensation programs Add: Dividends and undistributed earnings allocated to participating unvested share-based payment awards—Basic $ 16 $ 17 Less: Dividends and undistributed earnings allocated to participating unvested share-based payment awards—Diluted 16 16 Stock options 1.9 2.5 Deferred and long-term compensation programs 1.1 0.9 Exchangeable Surplus Notes 5 5.9 4 5.8 Diluted earnings per share Net income (loss) attributable to Prudential Financial available to holders of Common Stock $ 1,352 430.9 $ 3.14 $ 1,357 439.1 $ 3.09
Earnings Per Share Computation	For the periods indicated, the number of stock options and shares related to deferred and long-term compensation programs that were considered antidilutive and were excluded from the computation of diluted earnings per share, weighted for the portion of the period they were outstanding, are as follows: Three Months Ended March 31, 2018 2017 Shares Exercise Price Shares Exercise Price (in millions, except per share amounts, based on weighted average) Antidilutive stock options based on application of the treasury stock method 0.3 $ 107.65 0.2 $ 110.45 Antidilutive stock options due to net loss available to holders of Common Stock 0.0 0.0 Antidilutive shares based on application of the treasury stock method 0.0 0.5 Antidilutive shares due to net loss available to holders of Common Stock 0.0 0.0 Total antidilutive stock options and shares 0.3 0.7

Segment Information (Tables)

Segment Information (Tables)	3 Months Ended
	Mar. 31, 2018
Segment Reporting [Abstract]
Reconciliation of Operating Profit (Loss) from Segments to Consolidated	The table below reconciles “adjusted operating income before income taxes” to “income before income taxes and equity in earnings of operating joint ventures”: Three Months Ended 2018 2017 (in millions) Adjusted operating income before income taxes by segment: Individual Annuities $ 519 $ 468 Individual Life 36 118 Total U.S. Individual Solutions division(1) 555 586 Retirement 317 397 Group Insurance 55 34 Total U.S. Workplace Solutions division(1) 372 431 Investment Management 232 196 Total Investment Management division(1) 232 196 International Insurance 856 799 Total International Insurance division 856 799 Corporate and Other operations (294 ) (352 ) Total Corporate and Other (294 ) (352 ) Total segment adjusted operating income before income taxes 1,721 1,660 Reconciling items: Realized investment gains (losses), net, and related adjustments 87 (66 ) Charges related to realized investment gains (losses), net (23 ) 104 Investment gains (losses) on assets supporting experience-rated contractholder liabilities, net (403 ) 44 Change in experience-rated contractholder liabilities due to asset value changes 418 (12 ) Divested businesses: Closed Block division (9 ) 34 Other divested businesses (72 ) 6 Equity in earnings of operating joint ventures and earnings attributable to noncontrolling interests (26 ) (28 ) Consolidated income (loss) before income taxes and equity in earnings of operating joint ventures $ 1,693 $ 1,742 __________ (1) Prior period divisional subtotals are presented on a basis consistent with the Company’s new organizational structure. Individual segment results and consolidated totals remain unchanged. See Note 22 to the Consolidated Financial Statements included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2017.
Reconciliation of Certain Financial Information from Segments to Consolidated	The table below presents revenues and total assets for the Company’s reportable segments for the periods or as of the dates indicated: Revenues Total Assets Three Months Ended March 31, December 31, 2018 2017 (in millions) Individual Annuities $ 1,252 $ 1,215 $ 178,458 $ 183,666 Individual Life 1,425 1,445 84,393 83,985 Total U.S. Individual Solutions division(1) 2,677 2,660 262,851 267,651 Retirement 2,089 1,937 179,483 183,629 Group Insurance 1,416 1,383 42,064 41,575 Total U.S. Workplace Solutions division(1) 3,505 3,320 221,547 225,204 Investment Management 826 756 47,811 49,944 Total Investment Management division(1) 826 756 47,811 49,944 International Insurance 6,040 5,409 222,768 211,647 Total International Insurance division 6,040 5,409 222,768 211,647 Corporate and Other operations (173 ) (138 ) 12,729 14,556 Total Corporate and Other (173 ) (138 ) 12,729 14,556 Total 12,875 12,007 767,706 769,002 Reconciling items: Realized investment gains (losses), net, and related adjustments 87 (66 ) Charges related to realized investment gains (losses), net (71 ) (22 ) Investment gains (losses) on assets supporting experience-rated contractholder liabilities, net (403 ) 44 Divested businesses: Closed Block division 1,163 1,557 61,971 63,134 Other divested businesses 132 181 Equity in earnings of operating joint ventures and earnings attributable to noncontrolling interests (26 ) (31 ) Total per Unaudited Interim Consolidated Financial Statements $ 13,757 $ 13,670 $ 829,677 $ 832,136 __________ (1) Prior period divisional subtotals are presented on a basis consistent with the Company’s new organizational structure. Individual segment results and consolidated totals remain unchanged. See Note 22 to the Consolidated Financial Statements included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2017.
Schedule of Intersegment Revenues	The Investment Management segment revenues include intersegment revenues, primarily consisting of asset-based management and administration fees, as follows: Three Months Ended 2018 2017 (in millions) Investment Management segment intersegment revenues $ 184 $ 172

Commitments and Contingent Li35

Commitments and Contingent Liabilities (Tables)	3 Months Ended
	Mar. 31, 2018
Commitments and Contingent Liabilities [Line Items]
Mortgage Loans	The following table sets forth the composition of “Commercial mortgage and other loans,” as of the dates indicated: March 31, 2018 December 31, 2017 Amount (in millions) % of Total Amount (in millions) % of Total Commercial mortgage and agricultural property loans by property type: Office $ 13,257 23.1 % $ 12,670 22.9 % Retail 8,751 15.3 8,543 15.5 Apartments/Multi-Family 15,670 27.4 15,465 28.0 Industrial 10,656 18.6 9,451 17.1 Hospitality 1,953 3.4 2,067 3.7 Other 3,806 6.6 3,888 7.0 Total commercial mortgage loans 54,093 94.4 52,084 94.2 Agricultural property loans 3,223 5.6 3,203 5.8 Total commercial mortgage and agricultural property loans by property type 57,316 100.0 % 55,287 100.0 % Valuation allowance (102 ) (100 ) Total net commercial mortgage and agricultural property loans by property type 57,214 55,187 Other loans: Uncollateralized loans 690 663 Residential property loans 196 196 Other collateralized loans 4 5 Total other loans 890 864 Valuation allowance (6 ) (6 ) Total net other loans 884 858 Total commercial mortgage and other loans(1) $ 58,098 $ 56,045 __________ (1) Includes loans held for sale which are carried at fair value and are collateralized primarily by apartment complexes. As of March 31, 2018 and December 31, 2017 , the net carrying value of these loans was $298 million and $593 million , respectively.
Commitments | Commercial Mortgage Loans
Commitments and Contingent Liabilities [Line Items]
Mortgage Loans	Commercial Mortgage Loan Commitments March 31, December 31, (in millions) Total outstanding mortgage loan commitments $ 2,093 $ 2,772 Portion of commitment where prearrangement to sell to investor exists $ 477 $ 435
Commitments | Investments
Commitments and Contingent Liabilities [Line Items]
Commitments to Purchase Investments (excluding Commercial Mortgage Loans)	Commitments to Purchase Investments (excluding Commercial Mortgage Loans) March 31, December 31, (in millions) Expected to be funded from the general account and other operations outside the separate accounts $ 6,359 $ 6,319 Expected to be funded from separate accounts $ 92 $ 141
Indemnifications
Commitments and Contingent Liabilities [Line Items]
Indemnification of Securities Lending Transactions	Indemnification of Securities Lending Transactions March 31, December 31, (in millions) Indemnification provided to certain securities lending clients $ 5,142 $ 4,619 Fair value of related collateral associated with above indemnifications $ 5,233 $ 4,722 Accrued liability associated with guarantee $ 0 $ 0
Indemnifications | Serviced Mortgage Loans
Commitments and Contingent Liabilities [Line Items]
Mortgage Loans	Indemnification of Serviced Mortgage Loans March 31, December 31, (in millions) Maximum exposure under indemnification agreements for mortgage loans serviced by the Company $ 1,644 $ 1,609 First-loss exposure portion of above $ 492 $ 483 Accrued liability associated with guarantees $ 15 $ 14
Guarantees of Asset Values
Commitments and Contingent Liabilities [Line Items]
Guarantees	Guarantees of Asset Values March 31, December 31, (in millions) Guaranteed value of third-parties’ assets $ 76,159 $ 77,290 Fair value of collateral supporting these assets $ 75,402 $ 77,651 Asset (liability) associated with guarantee, carried at fair value $ 6 $ (1 )
Other Guarantees
Commitments and Contingent Liabilities [Line Items]
Guarantees	Other Guarantees March 31, December 31, (in millions) Other guarantees where amount can be determined $ 31 $ 31 Accrued liability for other guarantees and indemnifications $ 0 $ 0

Business and Basis of Present36

Business and Basis of Presentation (Narrative) (Details) $ in Millions	3 Months Ended	12 Months Ended
	Mar. 31, 2018divisionsegment	Dec. 31, 2017USD ($)	Dec. 31, 2016USD ($)	Dec. 31, 2015USD ($)
Prior Period Adjustments Restatement [Line Items]
Number of divisions | division	5
Number of reportable segments | segment	7
Retained Earnings | Change in Accounting Principle, Adjustment To Reporting Calendar
Prior Period Adjustments Restatement [Line Items]
Increase in retained earnings | $		$ 167	$ 167	$ 167

Significant Accounting Polici37

Significant Accounting Policies and Pronouncements (Changes to the presentation within the Consolidated Statements of Financial Position) (Details) - USD ($) $ in Millions		Mar. 31, 2018	Jan. 01, 2018	Dec. 31, 2017
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Fixed maturities, available-for-sale	[1]	$ 347,630		$ 346,780
Fixed maturities, held-to-maturity	[1]	2,120		2,049
Fixed maturities, trading, at fair value	[1],[2]	2,885		3,507
Trading account assets supporting insurance liabilities, at fair value				0
Assets supporting experience-rated contractholder liabilities, at fair value	[1],[2]	21,637		22,097
Other trading account assets, at fair value				0
Equity securities, available-for-sale, at fair value				0
Equity securities, at fair value	[1],[2]	7,289		7,329
Commercial mortgage and other loans	[1]	58,098		56,045
Policy loans		12,036		11,891
Other long-term investments				0
Other invested assets	[1],[2]	14,044		13,373
Short-term Investments	[2]	5,752		6,800
Total investments		$ 471,491		469,871
As Previously Reported
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Fixed maturities, available-for-sale				346,780
Fixed maturities, held-to-maturity				2,049
Fixed maturities, trading, at fair value				0
Trading account assets supporting insurance liabilities, at fair value				22,097
Assets supporting experience-rated contractholder liabilities, at fair value				0
Other trading account assets, at fair value				5,752
Equity securities, available-for-sale, at fair value				6,174
Equity securities, at fair value				0
Commercial mortgage and other loans				56,045
Policy loans				11,891
Other long-term investments				12,308
Other invested assets				0
Short-term Investments				6,775
Total investments				469,871
Reclassifications (1) | ASU 2016-01
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Trading account assets supporting insurance liabilities, at fair value				(22,097)
Assets supporting experience-rated contractholder liabilities, at fair value				22,097
Other invested assets			$ 229
Total investments				0
Reclassifications (2) | ASU 2016-01
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Equity securities, available-for-sale, at fair value				(6,174)
Equity securities, at fair value				6,174
Total investments				0
Reclassifications (3) | ASU 2016-01
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Fixed maturities, trading, at fair value				3,507
Other trading account assets, at fair value				(5,752)
Equity securities, at fair value				1,155
Other invested assets				1,065
Short-term Investments				25
Total investments				0
Reclassifications (4) | ASU 2016-01
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Other long-term investments				(12,308)
Other invested assets				12,308
Total investments				$ 0
[1]	See Note 4 for details of balances associated with variable interest entities.
[2]	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 Polici38

Significant Accounting Policies and Pronouncements (Cumulative-effect Adjustment Upon Adoption) (Details) - USD ($) $ in Millions		Mar. 31, 2018	Jan. 01, 2018	Dec. 31, 2017	Mar. 31, 2017	Dec. 31, 2016
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Other invested assets	[1],[2]	$ 14,044		$ 13,373
Total assets		829,677		832,136
Policyholders’ dividends		5,446		6,411
Income taxes		9,296		9,648
Total liabilities		777,502		777,625
Accumulated other comprehensive income (loss)		14,761		17,074
Retained earnings		28,898		28,671
Total equity		52,175		54,511	$ 47,141	$ 46,088
Total liabilities and equity		$ 829,677		$ 832,136
ASU 2016-01 | Restatement Adjustment
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Other invested assets			$ 229
Total assets			229
Policyholders’ dividends			157
Income taxes			15
Total liabilities			172
Accumulated other comprehensive income (loss)			(847)
Retained earnings			904
Total equity			57
Total liabilities and equity			$ 229
[1]	Prior period amounts have been reclassified to conform to current period presentation. See “Adoption of ASU 2016-01” in Note 2 for details.
[2]	See Note 4 for details of balances associated with variable interest entities.

Significant Accounting Polici39

Significant Accounting Policies and Pronouncements (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Asset-based management fees	$ 1,026	$ 951
Accumulated other comprehensive income (loss)	14,761		$ 17,074
ASU 2014-09
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Asset-based management fees	862	796
Performance-based incentive fees	5	7
Other fees	159	$ 148
ASU 2018-02
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Accumulated other comprehensive income (loss)	1,653
Retained earnings	$ (1,653)

Investments (Fixed Maturities S

Investments (Fixed Maturities Securities Excluding Investments Classified as Trading) (Details) - USD ($) $ in Millions		Mar. 31, 2018	Dec. 31, 2017
Summary Of Investments Other Than Investments In Related Parties Reportable Data [Line Items]
Amortized Cost		$ 319,180	$ 312,385
Fair Value	[1]	347,630	346,780
Amortized Cost	[1]	2,120	2,049
Fair Value		2,511	2,430
Fixed maturities
Summary Of Investments Other Than Investments In Related Parties Reportable Data [Line Items]
Amortized Cost		319,180	312,385
Gross Unrealized Gains		32,120	36,171
Gross Unrealized Losses		3,670	1,776
Fair Value		347,630	346,780
Amortized Cost		2,120	2,049
Gross Unrealized Gains		391	381
Gross Unrealized Losses		0	0
Fair Value		2,511	2,430
Fixed maturities | U.S. Treasury securities and obligations of U.S. government authorities and agencies
Summary Of Investments Other Than Investments In Related Parties Reportable Data [Line Items]
Amortized Cost		22,519	22,837
Gross Unrealized Gains		3,114	3,647
Gross Unrealized Losses		612	346
Fair Value		25,021	26,138
Fixed maturities | Obligations of U.S. states and their political subdivisions
Summary Of Investments Other Than Investments In Related Parties Reportable Data [Line Items]
Amortized Cost		9,483	9,366
Gross Unrealized Gains		842	1,111
Gross Unrealized Losses		30	6
Fair Value		10,295	10,471
Fixed maturities | Foreign government bonds
Summary Of Investments Other Than Investments In Related Parties Reportable Data [Line Items]
Amortized Cost		94,181	88,062
Gross Unrealized Gains		16,498	15,650
Gross Unrealized Losses		354	293
Fair Value		110,325	103,419
Amortized Cost		915	865
Gross Unrealized Gains		283	265
Gross Unrealized Losses		0	0
Fair Value		1,198	1,130
Fixed maturities | U.S. corporate public securities
Summary Of Investments Other Than Investments In Related Parties Reportable Data [Line Items]
Amortized Cost		81,309	81,967
Gross Unrealized Gains		5,882	8,671
Gross Unrealized Losses		1,365	414
Fair Value		85,826	90,224
Fixed maturities | U.S. corporate private securities
Summary Of Investments Other Than Investments In Related Parties Reportable Data [Line Items]
Amortized Cost		32,121	31,852
Gross Unrealized Gains		1,528	2,051
Gross Unrealized Losses		406	169
Fair Value		33,243	33,734
Fixed maturities | Foreign corporate public securities
Summary Of Investments Other Than Investments In Related Parties Reportable Data [Line Items]
Amortized Cost		26,776	26,389
Gross Unrealized Gains		2,635	3,118
Gross Unrealized Losses		233	99
Fair Value		29,178	29,408
Amortized Cost		685	654
Gross Unrealized Gains		75	82
Gross Unrealized Losses		0	0
Fair Value		760	736
Fixed maturities | Foreign corporate private securities
Summary Of Investments Other Than Investments In Related Parties Reportable Data [Line Items]
Amortized Cost		23,829	23,322
Gross Unrealized Gains		1,179	1,242
Gross Unrealized Losses		365	337
Fair Value		24,643	24,227
Amortized Cost		88	84
Gross Unrealized Gains		2	2
Gross Unrealized Losses		0	0
Fair Value		90	86
Fixed maturities | Asset-backed securities
Summary Of Investments Other Than Investments In Related Parties Reportable Data [Line Items]
Amortized Cost		12,614	11,965
Gross Unrealized Gains		226	278
Gross Unrealized Losses		23	10
Fair Value		12,817	12,233
Fixed maturities | Commercial mortgage-backed securities
Summary Of Investments Other Than Investments In Related Parties Reportable Data [Line Items]
Amortized Cost		13,021	13,134
Gross Unrealized Gains		87	238
Gross Unrealized Losses		245	91
Fair Value		12,863	13,281
Amortized Cost		0	0
Gross Unrealized Gains		0	0
Gross Unrealized Losses		0	0
Fair Value		0	0
Fixed maturities | Residential mortgage-backed securities
Summary Of Investments Other Than Investments In Related Parties Reportable Data [Line Items]
Amortized Cost		3,327	3,491
Gross Unrealized Gains		129	165
Gross Unrealized Losses		37	11
Fair Value		3,419	3,645
Amortized Cost		432	446
Gross Unrealized Gains		31	32
Gross Unrealized Losses		0	0
Fair Value		463	478
Available-for-sale | OTTI | Fixed maturities
Summary Of Investments Other Than Investments In Related Parties Reportable Data [Line Items]
OTTI in AOCI		(206)	(267)
Available-for-sale | OTTI | Fixed maturities | U.S. Treasury securities and obligations of U.S. government authorities and agencies
Summary Of Investments Other Than Investments In Related Parties Reportable Data [Line Items]
OTTI in AOCI		0	0
Available-for-sale | OTTI | Fixed maturities | Obligations of U.S. states and their political subdivisions
Summary Of Investments Other Than Investments In Related Parties Reportable Data [Line Items]
OTTI in AOCI		0	0
Available-for-sale | OTTI | Fixed maturities | Foreign government bonds
Summary Of Investments Other Than Investments In Related Parties Reportable Data [Line Items]
OTTI in AOCI		0	0
Available-for-sale | OTTI | Fixed maturities | U.S. corporate public securities
Summary Of Investments Other Than Investments In Related Parties Reportable Data [Line Items]
OTTI in AOCI		(6)	(10)
Available-for-sale | OTTI | Fixed maturities | U.S. corporate private securities
Summary Of Investments Other Than Investments In Related Parties Reportable Data [Line Items]
OTTI in AOCI		(10)	(13)
Available-for-sale | OTTI | Fixed maturities | Foreign corporate public securities
Summary Of Investments Other Than Investments In Related Parties Reportable Data [Line Items]
OTTI in AOCI		(5)	(5)
Available-for-sale | OTTI | Fixed maturities | Foreign corporate private securities
Summary Of Investments Other Than Investments In Related Parties Reportable Data [Line Items]
OTTI in AOCI		0	0
Available-for-sale | OTTI | Fixed maturities | Asset-backed securities
Summary Of Investments Other Than Investments In Related Parties Reportable Data [Line Items]
OTTI in AOCI		(184)	(237)
Available-for-sale | OTTI | Fixed maturities | Commercial mortgage-backed securities
Summary Of Investments Other Than Investments In Related Parties Reportable Data [Line Items]
OTTI in AOCI		0	0
Available-for-sale | OTTI | Fixed maturities | Residential mortgage-backed securities
Summary Of Investments Other Than Investments In Related Parties Reportable Data [Line Items]
OTTI in AOCI		(1)	(2)
Available-for-sale | Net Unrealized Investment Gains (Losses) | Fixed maturities
Summary Of Investments Other Than Investments In Related Parties Reportable Data [Line Items]
OTTI in AOCI		440	553
Held-to-maturity | Net Unrealized Investment Gains (Losses) | Fixed maturities
Summary Of Investments Other Than Investments In Related Parties Reportable Data [Line Items]
OTTI in AOCI		2	2
Prudential Netting Agreement | U.S. corporate private securities
Summary Of Investments Other Than Investments In Related Parties Reportable Data [Line Items]
Fair Value		2,846	2,660
Prudential Netting Agreement | Fixed maturities
Summary Of Investments Other Than Investments In Related Parties Reportable Data [Line Items]
Amortized Cost		4,753	4,627
Fair Value		4,812	4,913
Prudential Netting Agreement | Fixed maturities | U.S. corporate private securities
Summary Of Investments Other Than Investments In Related Parties Reportable Data [Line Items]
Amortized Cost		2,846	2,660
Fair Value		$ 2,846	$ 2,660
[1]	See Note 4 for details of balances associated with variable interest entities.

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 Millions	Mar. 31, 2018	Dec. 31, 2017
Schedule of Available-for-sale Securities [Line Items]
Less than twelve months, Fair Value	$ 68,201	$ 27,635
Less than twelve months, Gross Unrealized Losses	1,693	333
Twelve months or more, Fair Value	23,997	28,336
Twelve months or more, Gross Unrealized Losses	1,977	1,443
Total, Fair Value	92,198	55,971
Total, Gross Unrealized Losses	3,670	1,776
Fair Value not reflected in AOCI, held-to-maturity securities	13	12
Gross Unrealized Losses not reflected in AOCI, held-to-maturity securities	1	1
U.S. Treasury securities and obligations of U.S. government authorities and agencies
Schedule of Available-for-sale Securities [Line Items]
Less than twelve months, Fair Value	4,324	3,450
Less than twelve months, Gross Unrealized Losses	127	28
Twelve months or more, Fair Value	4,984	6,391
Twelve months or more, Gross Unrealized Losses	485	318
Total, Fair Value	9,308	9,841
Total, Gross Unrealized Losses	612	346
Obligations of U.S. states and their political subdivisions
Schedule of Available-for-sale Securities [Line Items]
Less than twelve months, Fair Value	1,217	44
Less than twelve months, Gross Unrealized Losses	16	0
Twelve months or more, Fair Value	264	287
Twelve months or more, Gross Unrealized Losses	14	6
Total, Fair Value	1,481	331
Total, Gross Unrealized Losses	30	6
Foreign government bonds
Schedule of Available-for-sale Securities [Line Items]
Less than twelve months, Fair Value	3,882	4,417
Less than twelve months, Gross Unrealized Losses	133	55
Twelve months or more, Fair Value	2,866	2,937
Twelve months or more, Gross Unrealized Losses	221	238
Total, Fair Value	6,748	7,354
Total, Gross Unrealized Losses	354	293
U.S. corporate public securities
Schedule of Available-for-sale Securities [Line Items]
Less than twelve months, Fair Value	28,236	7,914
Less than twelve months, Gross Unrealized Losses	822	110
Twelve months or more, Fair Value	5,983	6,831
Twelve months or more, Gross Unrealized Losses	543	304
Total, Fair Value	34,219	14,745
Total, Gross Unrealized Losses	1,365	414
U.S. corporate private securities
Schedule of Available-for-sale Securities [Line Items]
Less than twelve months, Fair Value	10,588	4,596
Less than twelve months, Gross Unrealized Losses	230	76
Twelve months or more, Fair Value	2,123	2,009
Twelve months or more, Gross Unrealized Losses	176	93
Total, Fair Value	12,711	6,605
Total, Gross Unrealized Losses	406	169
Foreign corporate public securities
Schedule of Available-for-sale Securities [Line Items]
Less than twelve months, Fair Value	5,635	2,260
Less than twelve months, Gross Unrealized Losses	126	21
Twelve months or more, Fair Value	1,478	1,678
Twelve months or more, Gross Unrealized Losses	107	78
Total, Fair Value	7,113	3,938
Total, Gross Unrealized Losses	233	99
Foreign corporate private securities
Schedule of Available-for-sale Securities [Line Items]
Less than twelve months, Fair Value	4,804	1,213
Less than twelve months, Gross Unrealized Losses	86	20
Twelve months or more, Fair Value	3,588	5,339
Twelve months or more, Gross Unrealized Losses	279	317
Total, Fair Value	8,392	6,552
Total, Gross Unrealized Losses	365	337
Asset-backed securities
Schedule of Available-for-sale Securities [Line Items]
Less than twelve months, Fair Value	2,511	564
Less than twelve months, Gross Unrealized Losses	13	2
Twelve months or more, Fair Value	297	366
Twelve months or more, Gross Unrealized Losses	10	8
Total, Fair Value	2,808	930
Total, Gross Unrealized Losses	23	10
Commercial mortgage-backed securities
Schedule of Available-for-sale Securities [Line Items]
Less than twelve months, Fair Value	5,843	2,593
Less than twelve months, Gross Unrealized Losses	116	17
Twelve months or more, Fair Value	2,138	2,212
Twelve months or more, Gross Unrealized Losses	129	74
Total, Fair Value	7,981	4,805
Total, Gross Unrealized Losses	245	91
Residential mortgage-backed securities
Schedule of Available-for-sale Securities [Line Items]
Less than twelve months, Fair Value	1,161	584
Less than twelve months, Gross Unrealized Losses	24	4
Twelve months or more, Fair Value	276	286
Twelve months or more, Gross Unrealized Losses	13	7
Total, Fair Value	1,437	870
Total, Gross Unrealized Losses	$ 37	$ 11

Investments (Narrative) (Detail

Investments (Narrative) (Details) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Investment [Line Items]
Other invested assets	[1],[2]	$ 14,044		$ 13,373
Financial Assets Sold under Agreements to Repurchase, Gross Including Not Subject to Master Netting Arrangement		8,633		8,400
Commercial mortgage and other loans, Acquired		0	$ 0
Commercial mortgage and other loans, Sold		0	0
Financing Receivable, Modifications, Pre-Modification Recorded Investment		24	0
Troubled debt restructuring, Commitment to borrowers		0		0
Troubled debt restructuring, Private debt commitments		4
Fixed maturities
Investment [Line Items]
Gross Unrealized Losses		3,670		1,776
Gross unrealized losses of twelve months or more concentrated in various sectors		1,977		1,443
Fixed maturities | NAIC high or highest quality rating
Investment [Line Items]
Gross Unrealized Losses		3,182		1,470
Fixed maturities | NAIC other than high or highest quality rating
Investment [Line Items]
Gross Unrealized Losses		488		306
Corporate securities
Investment [Line Items]
Gross unrealized losses of twelve months or more concentrated in various sectors		1,977		$ 1,433
Other income | Equity securities
Investment [Line Items]
Net change in unrealized gains (losses)		(188)	43
Other income | Assets supporting experience-rated contractholder liabilities
Investment [Line Items]
Net change in unrealized gains (losses)		$ (398)	$ 46
California
Investment [Line Items]
Commercial mortgage loan, concentration percentage		27.00%
Texas
Investment [Line Items]
Commercial mortgage loan, concentration percentage		9.00%
New York
Investment [Line Items]
Commercial mortgage loan, concentration percentage		8.00%
Europe
Investment [Line Items]
Commercial mortgage loan, concentration percentage		6.00%
Australia
Investment [Line Items]
Commercial mortgage loan, concentration percentage		1.00%
Asia
Investment [Line Items]
Commercial mortgage loan, concentration percentage		1.00%
[1]	Prior period amounts have been reclassified to conform to current period presentation. See “Adoption of ASU 2016-01” in Note 2 for details.
[2]	See Note 4 for details of balances associated with variable interest entities.

Investments (Amortized Cost and

Investments (Amortized Cost and Fair Value of Fixed Maturities by Contractual Maturities) (Details) - USD ($) $ in Millions		Mar. 31, 2018	Dec. 31, 2017
Available for Sale Securities Amortized Cost
Due in one year or less		$ 13,067
Due after one year through five years		50,349
Due after five years through ten years		66,026
Due after ten years		160,776
Amortized Cost		319,180	$ 312,385
Available for Sale Securities Fair Value
Due in one year or less		13,597
Due after one year through five years		53,811
Due after five years through ten years		70,770
Due after ten years		180,353
Fair Value	[1]	347,630	346,780
Held to Maturity Securities Amortized Cost
Due in one year or less		0
Due after one year through five years		185
Due after five years through ten years		592
Due after ten years		911
Amortized Cost	[1]	2,120	2,049
Held to Maturity Securities Fair Value
Due in one year or less		0
Due after one year through five years		191
Due after five years through ten years		663
Due after ten years		1,194
Fair Value		2,511	2,430
Asset-backed securities
Available for Sale Securities Amortized Cost
Debt Maturities, without single maturity date		12,614
Available for Sale Securities Fair Value
Debt Maturities, without Single Maturity Date		12,817
Held to Maturity Securities Amortized Cost
Debt Maturities, without Single Maturity Date		0
Held to Maturity Securities Fair Value
Debt Maturities, without Single Maturity Date		0
Commercial mortgage-backed securities
Available for Sale Securities Amortized Cost
Debt Maturities, without single maturity date		13,021
Available for Sale Securities Fair Value
Debt Maturities, without Single Maturity Date		12,863
Held to Maturity Securities Amortized Cost
Debt Maturities, without Single Maturity Date		0
Held to Maturity Securities Fair Value
Debt Maturities, without Single Maturity Date		0
Residential mortgage-backed securities
Available for Sale Securities Amortized Cost
Debt Maturities, without single maturity date		3,327
Available for Sale Securities Fair Value
Debt Maturities, without Single Maturity Date		3,419
Held to Maturity Securities Amortized Cost
Debt Maturities, without Single Maturity Date		432
Held to Maturity Securities Fair Value
Debt Maturities, without Single Maturity Date		463
Fixed maturities
Available for Sale Securities Amortized Cost
Amortized Cost		319,180	312,385
Available for Sale Securities Fair Value
Fair Value		347,630	346,780
Held to Maturity Securities Amortized Cost
Amortized Cost		2,120	2,049
Held to Maturity Securities Fair Value
Fair Value		2,511	2,430
Fixed maturities | Asset-backed securities
Available for Sale Securities Amortized Cost
Amortized Cost		12,614	11,965
Available for Sale Securities Fair Value
Fair Value		12,817	12,233
Fixed maturities | Commercial mortgage-backed securities
Available for Sale Securities Amortized Cost
Amortized Cost		13,021	13,134
Available for Sale Securities Fair Value
Fair Value		12,863	13,281
Held to Maturity Securities Amortized Cost
Amortized Cost		0	0
Held to Maturity Securities Fair Value
Fair Value		0	0
Fixed maturities | Residential mortgage-backed securities
Available for Sale Securities Amortized Cost
Amortized Cost		3,327	3,491
Available for Sale Securities Fair Value
Fair Value		3,419	3,645
Held to Maturity Securities Amortized Cost
Amortized Cost		432	446
Held to Maturity Securities Fair Value
Fair Value		463	478
Fixed maturities | Prudential Netting Agreement
Held to Maturity Securities Amortized Cost
Amortized Cost		4,753	4,627
Held to Maturity Securities Fair Value
Fair Value		$ 4,812	$ 4,913
[1]	See Note 4 for details of balances associated with variable interest entities.

Investments (Fixed Maturity Pro

Investments (Fixed Maturity Proceeds) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Schedule of Available-for-sale Securities [Line Items]
Proceeds from maturities/prepayments	$ 14,665	$ 13,389
Proceeds from maturities/prepayments	36	49
Fixed maturities | Available-for-sale
Schedule of Available-for-sale Securities [Line Items]
Proceeds from sales	9,585	7,730
Proceeds from maturities/prepayments	5,226	5,874
Gross investment gains from sales and maturities	374	391
Gross investment losses from sales and maturities	(257)	(163)
OTTI recognized in earnings	(39)	(54)
Fixed maturities | Held-to-maturity
Schedule of Available-for-sale Securities [Line Items]
Proceeds from maturities/prepayments	36	50
Fixed maturities | Available-for-sale
Schedule of Available-for-sale Securities [Line Items]
Noncash or Part Noncash Divestiture, Amount of Consideration Received	146	215
Fixed maturities | Held-to-maturity
Schedule of Available-for-sale Securities [Line Items]
Noncash or Part Noncash Divestiture, Amount of Consideration Received	$ 0	$ 1

Investments (Credit Losses Reco

Investments (Credit Losses Recognized In Earnings on Fixed Maturity Securities Held by the Company) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Roll Forward]
Balance, beginning of period	$ 319	$ 359
New credit loss impairments	0	0
Additional credit loss impairments on securities previously impaired	0	1
Increases due to the passage of time on previously recorded credit losses	2	3
Reductions for securities which matured, paid down, prepaid or were sold during the period	(113)	(9)
Reductions for securities impaired to fair value during the period	(4)	(3)
Accretion of credit loss impairments previously recognized due to an increase in cash flows expected to be collected	(1)	(1)
Balance, ending of period	$ 203	$ 350

Investments (Assets Supporting

Investments (Assets Supporting Experience-Rated Contractholder Liabilities) (Details) - USD ($) $ in Millions		Mar. 31, 2018	Dec. 31, 2017
Assets Supporting Experience-Rated Contractholder Liabilities [Line Items]
Assets supporting experience-rated contractholder liabilities, at amortized cost or cost		$ 21,302	$ 21,364
Assets supporting experience-rated contractholder liabilities, at fair value	[1],[2]	21,637	22,097
Fixed maturities
Assets Supporting Experience-Rated Contractholder Liabilities [Line Items]
Assets supporting experience-rated contractholder liabilities, at amortized cost or cost		19,756	19,841
Assets supporting experience-rated contractholder liabilities, at fair value		19,834	20,209
Equity securities
Assets Supporting Experience-Rated Contractholder Liabilities [Line Items]
Assets supporting experience-rated contractholder liabilities, at amortized cost or cost		1,395	1,278
Assets supporting experience-rated contractholder liabilities, at fair value		1,652	1,643
Short-term investments and cash equivalents
Assets Supporting Experience-Rated Contractholder Liabilities [Line Items]
Assets supporting experience-rated contractholder liabilities, at amortized cost or cost		151	245
Assets supporting experience-rated contractholder liabilities, at fair value		151	245
Corporate securities | Fixed maturities
Assets Supporting Experience-Rated Contractholder Liabilities [Line Items]
Assets supporting experience-rated contractholder liabilities, at amortized cost or cost		13,573	13,816
Assets supporting experience-rated contractholder liabilities, at fair value		13,627	14,073
Commercial mortgage-backed securities | Fixed maturities
Assets Supporting Experience-Rated Contractholder Liabilities [Line Items]
Assets supporting experience-rated contractholder liabilities, at amortized cost or cost		2,394	2,294
Assets supporting experience-rated contractholder liabilities, at fair value		2,369	2,311
Residential mortgage-backed securities | Fixed maturities
Assets Supporting Experience-Rated Contractholder Liabilities [Line Items]
Assets supporting experience-rated contractholder liabilities, at amortized cost or cost		923	961
Assets supporting experience-rated contractholder liabilities, at fair value		908	966
Asset-backed securities | Fixed maturities
Assets Supporting Experience-Rated Contractholder Liabilities [Line Items]
Assets supporting experience-rated contractholder liabilities, at amortized cost or cost		1,398	1,363
Assets supporting experience-rated contractholder liabilities, at fair value		1,426	1,392
Foreign government bonds | Fixed maturities
Assets Supporting Experience-Rated Contractholder Liabilities [Line Items]
Assets supporting experience-rated contractholder liabilities, at amortized cost or cost		1,101	1,050
Assets supporting experience-rated contractholder liabilities, at fair value		1,104	1,057
U.S. government authorities and agencies and obligations of U.S. states | Fixed maturities
Assets Supporting Experience-Rated Contractholder Liabilities [Line Items]
Assets supporting experience-rated contractholder liabilities, at amortized cost or cost		367	357
Assets supporting experience-rated contractholder liabilities, at fair value		$ 400	$ 410
[1]	Prior period amounts have been reclassified to conform to current period presentation. See “Adoption of ASU 2016-01” in Note 2 for details.
[2]	See Note 4 for details of balances associated with variable interest entities.

Investments (Concentrations of

Investments (Concentrations of Credit Risk) (Details) - USD ($) $ in Millions	Mar. 31, 2018	Dec. 31, 2017
Investments in Japanese government and government agency securities:
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items]
Concentrations of credit risk at amortized cost	$ 71,422	$ 66,152
Concentrations of credit risk at fair value	84,623	78,104
Investments in South Korean government and government agency securities:
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items]
Concentrations of credit risk at amortized cost	9,839	9,440
Concentrations of credit risk at fair value	11,139	11,004
Assets supporting experience-rated contractholder liabilities | Investments in Japanese government and government agency securities:
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items]
Concentrations of credit risk at amortized cost	705	657
Concentrations of credit risk at fair value	717	667
Assets supporting experience-rated contractholder liabilities | Investments in South Korean government and government agency securities:
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items]
Concentrations of credit risk at amortized cost	15	15
Concentrations of credit risk at fair value	15	15
Available-for-sale | Fixed maturities | Investments in Japanese government and government agency securities:
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items]
Concentrations of credit risk at amortized cost	69,800	64,628
Concentrations of credit risk at fair value	82,712	76,311
Available-for-sale | Fixed maturities | Investments in South Korean government and government agency securities:
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items]
Concentrations of credit risk at amortized cost	9,824	9,425
Concentrations of credit risk at fair value	11,124	10,989
Held-to-maturity | Fixed maturities | Investments in Japanese government and government agency securities:
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items]
Concentrations of credit risk at amortized cost	893	844
Concentrations of credit risk at fair value	1,170	1,103
Held-to-maturity | Fixed maturities | Investments in South Korean government and government agency securities:
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items]
Concentrations of credit risk at amortized cost	0	0
Concentrations of credit risk at fair value	0	0
Trading | Fixed maturities | Investments in Japanese government and government agency securities:
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items]
Concentrations of credit risk at amortized cost	24	23
Concentrations of credit risk at fair value	24	23
Trading | Fixed maturities | Investments in South Korean government and government agency securities:
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items]
Concentrations of credit risk at amortized cost	0	0
Concentrations of credit risk at fair value	$ 0	$ 0

Investments (Commercial Mortgag

Investments (Commercial Mortgage and Other Loans) (Details) - USD ($) $ in Millions		3 Months Ended	12 Months Ended
		Mar. 31, 2018	Dec. 31, 2017
Commercial Mortgage and Other Loans [Line Items]
Total commercial mortgage and agricultural property loans by property type		$ 57,316	$ 55,287
Other loans		890	864
Total commercial mortgage and other loans	[1]	$ 58,098	$ 56,045
% of Total		100.00%	100.00%
Net carrying value of commercial loans held for sale		$ 298	$ 593
Commercial Mortgage Loans
Commercial Mortgage and Other Loans [Line Items]
Total commercial mortgage and agricultural property loans by property type		$ 54,093	$ 52,084
% of Total		94.40%	94.20%
Commercial mortgage and agricultural property loans
Commercial Mortgage and Other Loans [Line Items]
Valuation allowance, Commercial mortgage and agricultural property loans		$ (102)	$ (100)
Total net loans		57,214	55,187
Uncollateralized loans
Commercial Mortgage and Other Loans [Line Items]
Other loans		690	663
Residential property loans
Commercial Mortgage and Other Loans [Line Items]
Other loans		196	196
Other collateralized loans
Commercial Mortgage and Other Loans [Line Items]
Other loans		4	5
Other loans
Commercial Mortgage and Other Loans [Line Items]
Total net loans		884	858
Valuation allowance, Other loans		(6)	(6)
Office
Commercial Mortgage and Other Loans [Line Items]
Total commercial mortgage and agricultural property loans by property type		$ 13,257	$ 12,670
% of Total		23.10%	22.90%
Retail
Commercial Mortgage and Other Loans [Line Items]
Total commercial mortgage and agricultural property loans by property type		$ 8,751	$ 8,543
% of Total		15.30%	15.50%
Apartments/Multi-Family
Commercial Mortgage and Other Loans [Line Items]
Total commercial mortgage and agricultural property loans by property type		$ 15,670	$ 15,465
% of Total		27.40%	28.00%
Industrial
Commercial Mortgage and Other Loans [Line Items]
Total commercial mortgage and agricultural property loans by property type		$ 10,656	$ 9,451
% of Total		18.60%	17.10%
Hospitality
Commercial Mortgage and Other Loans [Line Items]
Total commercial mortgage and agricultural property loans by property type		$ 1,953	$ 2,067
% of Total		3.40%	3.70%
Other
Commercial Mortgage and Other Loans [Line Items]
Total commercial mortgage and agricultural property loans by property type		$ 3,806	$ 3,888
% of Total		6.60%	7.00%
Agricultural property loans
Commercial Mortgage and Other Loans [Line Items]
Total commercial mortgage and agricultural property loans by property type		$ 3,223	$ 3,203
% of Total		5.60%	5.80%
[1]	See Note 4 for details of balances associated with variable interest entities.

Investments (Allowance for Cred

Investments (Allowance for Credit Losses) (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Mar. 31, 2018	Dec. 31, 2017
Allowance for Loan and Lease Losses [Roll Forward]
Balance, beginning of year	$ 106	$ 106
Addition to (release of) allowance for losses	2	1
Charge-offs, net of recoveries	0	(1)
Change in foreign exchange	0	0
Total ending balance	108	106
Commercial Mortgage Loans
Allowance for Loan and Lease Losses [Roll Forward]
Balance, beginning of year	97	96
Addition to (release of) allowance for losses	2	2
Charge-offs, net of recoveries	0	(1)
Change in foreign exchange	0	0
Total ending balance	99	97
Agricultural Property Loans
Allowance for Loan and Lease Losses [Roll Forward]
Balance, beginning of year	3	2
Addition to (release of) allowance for losses	0	1
Charge-offs, net of recoveries	0	0
Change in foreign exchange	0	0
Total ending balance	3	3
Residential Property Loans
Allowance for Loan and Lease Losses [Roll Forward]
Balance, beginning of year	1	2
Addition to (release of) allowance for losses	0	(1)
Charge-offs, net of recoveries	0	0
Change in foreign exchange	0	0
Total ending balance	1	1
Other Collateralized Loans
Allowance for Loan and Lease Losses [Roll Forward]
Balance, beginning of year	0	0
Addition to (release of) allowance for losses	0	0
Charge-offs, net of recoveries	0	0
Change in foreign exchange	0	0
Total ending balance	0	0
Uncollateralized Loans
Allowance for Loan and Lease Losses [Roll Forward]
Balance, beginning of year	5	6
Addition to (release of) allowance for losses	0	(1)
Charge-offs, net of recoveries	0	0
Change in foreign exchange	0	0
Total ending balance	$ 5	$ 5

Investments (Allowance for Cr50

Investments (Allowance for Credit Losses and Recorded Investment) (Details) - USD ($) $ in Millions	Mar. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Allowance for credit losses:
Individually evaluated for impairment	$ 7	$ 7
Collectively evaluated for impairment	101	99
Total ending balance	108	106	$ 106
Recorded Investment:
Individually evaluated for impairment	108	116
Collectively evaluated for impairment	58,098	56,035
Total ending balance	58,206	56,151
Commercial Mortgage Loans
Allowance for credit losses:
Individually evaluated for impairment	7	7
Collectively evaluated for impairment	92	90
Total ending balance	99	97	96
Recorded Investment:
Individually evaluated for impairment	71	75
Collectively evaluated for impairment	54,022	52,009
Total ending balance	54,093	52,084
Agricultural Property Loans
Allowance for credit losses:
Individually evaluated for impairment	0	0
Collectively evaluated for impairment	3	3
Total ending balance	3	3	2
Recorded Investment:
Individually evaluated for impairment	35	39
Collectively evaluated for impairment	3,188	3,164
Total ending balance	3,223	3,203
Residential Property Loans
Allowance for credit losses:
Individually evaluated for impairment	0	0
Collectively evaluated for impairment	1	1
Total ending balance	1	1	2
Recorded Investment:
Individually evaluated for impairment	0	0
Collectively evaluated for impairment	196	196
Total ending balance	196	196
Other Collateralized Loans
Allowance for credit losses:
Individually evaluated for impairment	0	0
Collectively evaluated for impairment	0	0
Total ending balance	0	0	0
Recorded Investment:
Individually evaluated for impairment	0	0
Collectively evaluated for impairment	4	5
Total ending balance	4	5
Uncollateralized Loans
Allowance for credit losses:
Individually evaluated for impairment	0	0
Collectively evaluated for impairment	5	5
Total ending balance	5	5	$ 6
Recorded Investment:
Individually evaluated for impairment	2	2
Collectively evaluated for impairment	688	661
Total ending balance	690	663
Receivables Acquired with Deteriorated Credit Quality [Member]
Recorded Investment:
Financing Receivable Total	$ 0	$ 0

Investments (Credit Quality Ind

Investments (Credit Quality Indicators) (Details) - USD ($) $ in Millions	Mar. 31, 2018	Dec. 31, 2017
Commercial mortgage loans
Financing Receivable, Recorded Investment [Line Items]
Recording investment gross of allowance for credit losses	$ 54,093	$ 52,084
Agricultural property loans
Financing Receivable, Recorded Investment [Line Items]
Recording investment gross of allowance for credit losses	3,223	3,203
Commercial mortgage and agricultural property loans
Financing Receivable, Recorded Investment [Line Items]
Recording investment gross of allowance for credit losses	57,316	55,287
0%-59.99% | Commercial mortgage loans
Financing Receivable, Recorded Investment [Line Items]
Recording investment gross of allowance for credit losses	31,162	30,972
0%-59.99% | Agricultural property loans
Financing Receivable, Recorded Investment [Line Items]
Recording investment gross of allowance for credit losses	3,151	3,163
0%-59.99% | Commercial mortgage and agricultural property loans
Financing Receivable, Recorded Investment [Line Items]
Recording investment gross of allowance for credit losses	34,313	34,135
60%-69.99% | Commercial mortgage loans
Financing Receivable, Recorded Investment [Line Items]
Recording investment gross of allowance for credit losses	15,471	14,309
60%-69.99% | Agricultural property loans
Financing Receivable, Recorded Investment [Line Items]
Recording investment gross of allowance for credit losses	72	40
60%-69.99% | Commercial mortgage and agricultural property loans
Financing Receivable, Recorded Investment [Line Items]
Recording investment gross of allowance for credit losses	15,543	14,349
70%-79.99% | Commercial mortgage loans
Financing Receivable, Recorded Investment [Line Items]
Recording investment gross of allowance for credit losses	7,236	6,537
70%-79.99% | Agricultural property loans
Financing Receivable, Recorded Investment [Line Items]
Recording investment gross of allowance for credit losses	0	0
70%-79.99% | Commercial mortgage and agricultural property loans
Financing Receivable, Recorded Investment [Line Items]
Recording investment gross of allowance for credit losses	7,236	6,537
80% or greater | Commercial mortgage loans
Financing Receivable, Recorded Investment [Line Items]
Recording investment gross of allowance for credit losses	224	266
80% or greater | Agricultural property loans
Financing Receivable, Recorded Investment [Line Items]
Recording investment gross of allowance for credit losses	0	0
80% or greater | Commercial mortgage and agricultural property loans
Financing Receivable, Recorded Investment [Line Items]
Recording investment gross of allowance for credit losses	224	266
≥ 1.2X | Commercial mortgage loans
Financing Receivable, Recorded Investment [Line Items]
Recording investment gross of allowance for credit losses	51,517	49,827
≥ 1.2X | Agricultural property loans
Financing Receivable, Recorded Investment [Line Items]
Recording investment gross of allowance for credit losses	3,046	3,028
≥ 1.2X | Commercial mortgage and agricultural property loans
Financing Receivable, Recorded Investment [Line Items]
Recording investment gross of allowance for credit losses	54,563	52,855
≥ 1.2X | 0%-59.99% | Commercial mortgage loans
Financing Receivable, Recorded Investment [Line Items]
Recording investment gross of allowance for credit losses	30,215	30,082
≥ 1.2X | 0%-59.99% | Agricultural property loans
Financing Receivable, Recorded Investment [Line Items]
Recording investment gross of allowance for credit losses	2,974	2,988
≥ 1.2X | 0%-59.99% | Commercial mortgage and agricultural property loans
Financing Receivable, Recorded Investment [Line Items]
Recording investment gross of allowance for credit losses	33,189	33,070
≥ 1.2X | 60%-69.99% | Commercial mortgage loans
Financing Receivable, Recorded Investment [Line Items]
Recording investment gross of allowance for credit losses	14,694	13,658
≥ 1.2X | 60%-69.99% | Agricultural property loans
Financing Receivable, Recorded Investment [Line Items]
Recording investment gross of allowance for credit losses	72	40
≥ 1.2X | 60%-69.99% | Commercial mortgage and agricultural property loans
Financing Receivable, Recorded Investment [Line Items]
Recording investment gross of allowance for credit losses	14,766	13,698
≥ 1.2X | 70%-79.99% | Commercial mortgage loans
Financing Receivable, Recorded Investment [Line Items]
Recording investment gross of allowance for credit losses	6,524	5,994
≥ 1.2X | 70%-79.99% | Agricultural property loans
Financing Receivable, Recorded Investment [Line Items]
Recording investment gross of allowance for credit losses	0	0
≥ 1.2X | 70%-79.99% | Commercial mortgage and agricultural property loans
Financing Receivable, Recorded Investment [Line Items]
Recording investment gross of allowance for credit losses	6,524	5,994
≥ 1.2X | 80% or greater | Commercial mortgage loans
Financing Receivable, Recorded Investment [Line Items]
Recording investment gross of allowance for credit losses	84	93
≥ 1.2X | 80% or greater | Agricultural property loans
Financing Receivable, Recorded Investment [Line Items]
Recording investment gross of allowance for credit losses	0	0
≥ 1.2X | 80% or greater | Commercial mortgage and agricultural property loans
Financing Receivable, Recorded Investment [Line Items]
Recording investment gross of allowance for credit losses	84	93
1.0X to 1.2X | Commercial mortgage loans
Financing Receivable, Recorded Investment [Line Items]
Recording investment gross of allowance for credit losses	2,121	1,737
1.0X to 1.2X | Agricultural property loans
Financing Receivable, Recorded Investment [Line Items]
Recording investment gross of allowance for credit losses	175	170
1.0X to 1.2X | Commercial mortgage and agricultural property loans
Financing Receivable, Recorded Investment [Line Items]
Recording investment gross of allowance for credit losses	2,296	1,907
1.0X to 1.2X | 0%-59.99% | Commercial mortgage loans
Financing Receivable, Recorded Investment [Line Items]
Recording investment gross of allowance for credit losses	682	639
1.0X to 1.2X | 0%-59.99% | Agricultural property loans
Financing Receivable, Recorded Investment [Line Items]
Recording investment gross of allowance for credit losses	175	170
1.0X to 1.2X | 0%-59.99% | Commercial mortgage and agricultural property loans
Financing Receivable, Recorded Investment [Line Items]
Recording investment gross of allowance for credit losses	857	809
1.0X to 1.2X | 60%-69.99% | Commercial mortgage loans
Financing Receivable, Recorded Investment [Line Items]
Recording investment gross of allowance for credit losses	621	530
1.0X to 1.2X | 60%-69.99% | Agricultural property loans
Financing Receivable, Recorded Investment [Line Items]
Recording investment gross of allowance for credit losses	0	0
1.0X to 1.2X | 60%-69.99% | Commercial mortgage and agricultural property loans
Financing Receivable, Recorded Investment [Line Items]
Recording investment gross of allowance for credit losses	621	530
1.0X to 1.2X | 70%-79.99% | Commercial mortgage loans
Financing Receivable, Recorded Investment [Line Items]
Recording investment gross of allowance for credit losses	702	514
1.0X to 1.2X | 70%-79.99% | Agricultural property loans
Financing Receivable, Recorded Investment [Line Items]
Recording investment gross of allowance for credit losses	0	0
1.0X to 1.2X | 70%-79.99% | Commercial mortgage and agricultural property loans
Financing Receivable, Recorded Investment [Line Items]
Recording investment gross of allowance for credit losses	702	514
1.0X to 1.2X | 80% or greater | Commercial mortgage loans
Financing Receivable, Recorded Investment [Line Items]
Recording investment gross of allowance for credit losses	116	54
1.0X to 1.2X | 80% or greater | Agricultural property loans
Financing Receivable, Recorded Investment [Line Items]
Recording investment gross of allowance for credit losses	0	0
1.0X to 1.2X | 80% or greater | Commercial mortgage and agricultural property loans
Financing Receivable, Recorded Investment [Line Items]
Recording investment gross of allowance for credit losses	116	54
Less than 1.0X | Commercial mortgage loans
Financing Receivable, Recorded Investment [Line Items]
Recording investment gross of allowance for credit losses	455	520
Less than 1.0X | Agricultural property loans
Financing Receivable, Recorded Investment [Line Items]
Recording investment gross of allowance for credit losses	2	5
Less than 1.0X | Commercial mortgage and agricultural property loans
Financing Receivable, Recorded Investment [Line Items]
Recording investment gross of allowance for credit losses	457	525
Less than 1.0X | 0%-59.99% | Commercial mortgage loans
Financing Receivable, Recorded Investment [Line Items]
Recording investment gross of allowance for credit losses	265	251
Less than 1.0X | 0%-59.99% | Agricultural property loans
Financing Receivable, Recorded Investment [Line Items]
Recording investment gross of allowance for credit losses	2	5
Less than 1.0X | 0%-59.99% | Commercial mortgage and agricultural property loans
Financing Receivable, Recorded Investment [Line Items]
Recording investment gross of allowance for credit losses	267	256
Less than 1.0X | 60%-69.99% | Commercial mortgage loans
Financing Receivable, Recorded Investment [Line Items]
Recording investment gross of allowance for credit losses	156	121
Less than 1.0X | 60%-69.99% | Agricultural property loans
Financing Receivable, Recorded Investment [Line Items]
Recording investment gross of allowance for credit losses	0	0
Less than 1.0X | 60%-69.99% | Commercial mortgage and agricultural property loans
Financing Receivable, Recorded Investment [Line Items]
Recording investment gross of allowance for credit losses	156	121
Less than 1.0X | 70%-79.99% | Commercial mortgage loans
Financing Receivable, Recorded Investment [Line Items]
Recording investment gross of allowance for credit losses	10	29
Less than 1.0X | 70%-79.99% | Agricultural property loans
Financing Receivable, Recorded Investment [Line Items]
Recording investment gross of allowance for credit losses	0	0
Less than 1.0X | 70%-79.99% | Commercial mortgage and agricultural property loans
Financing Receivable, Recorded Investment [Line Items]
Recording investment gross of allowance for credit losses	10	29
Less than 1.0X | 80% or greater | Commercial mortgage loans
Financing Receivable, Recorded Investment [Line Items]
Recording investment gross of allowance for credit losses	24	119
Less than 1.0X | 80% or greater | Agricultural property loans
Financing Receivable, Recorded Investment [Line Items]
Recording investment gross of allowance for credit losses	0	0
Less than 1.0X | 80% or greater | Commercial mortgage and agricultural property loans
Financing Receivable, Recorded Investment [Line Items]
Recording investment gross of allowance for credit losses	$ 24	$ 119

Investments (Analysis of Past D

Investments (Analysis of Past Due Commercial Mortgage and Other Loans) (Details) - USD ($) $ in Millions	Mar. 31, 2018	Dec. 31, 2017
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	$ 58,200	$ 56,144
Total Past Due	6	7
Total Loans	58,206	56,151
Non-Accrual Status	95	96
30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	2	3
60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	1	0
90 days or more past due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	3	4
Commercial mortgage loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	54,093	52,084
Total Past Due	0	0
Total Loans	54,093	52,084
Non-Accrual Status	70	71
Commercial mortgage loans | 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
Commercial mortgage loans | 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
Commercial mortgage loans | 90 days or more past due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
Agricultural property loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	3,222	3,201
Total Past Due	1	2
Total Loans	3,223	3,203
Non-Accrual Status	23	23
Agricultural property loans | 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
Agricultural property loans | 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
Agricultural property loans | 90 days or more past due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	1	2
Residential Property Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	191	191
Total Past Due	5	5
Total Loans	196	196
Non-Accrual Status	2	2
Residential Property Loans | 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	2	3
Residential Property Loans | 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	1	0
Residential Property Loans | 90 days or more past due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	2	2
Other collateralized loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	4	5
Total Past Due	0	0
Total Loans	4	5
Non-Accrual Status	0	0
Other collateralized loans | 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
Other collateralized loans | 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
Other collateralized loans | 90 days or more past due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
Uncollateralized loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	690	663
Total Past Due	0	0
Total Loans	690	663
Non-Accrual Status	0	0
Uncollateralized loans | 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
Uncollateralized loans | 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
Uncollateralized loans | 90 days or more past due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	$ 0	$ 0

Investments (Other Invested Ass

Investments (Other Invested Assets) (Details) - USD ($) $ in Millions		Mar. 31, 2018	Dec. 31, 2017
Other Invested Assets [Line Items]
Other invested assets	[1],[2]	$ 14,044	$ 13,373
LPs/LLCs
Other Invested Assets [Line Items]
Other invested assets		9,286	8,720
Real estate held through direct ownership
Other Invested Assets [Line Items]
Other invested assets		2,421	2,409
Derivative instruments
Other Invested Assets [Line Items]
Other invested assets		1,226	1,214
Other
Other Invested Assets [Line Items]
Other invested assets		1,111	1,030
Mortgage debt | Real estate-related
Other Invested Assets [Line Items]
Other invested assets		802	799
Equity method | LPs/LLCs
Other Invested Assets [Line Items]
Other invested assets		4,989	4,729
Equity method | Private equity | LPs/LLCs
Other Invested Assets [Line Items]
Other invested assets		2,929	2,954
Equity method | Hedge funds | LPs/LLCs
Other Invested Assets [Line Items]
Other invested assets		907	803
Equity method | Real estate-related | LPs/LLCs
Other Invested Assets [Line Items]
Other invested assets		1,153	972
Cost method
Other Invested Assets [Line Items]
Other invested assets			1,572
Fair Value
Other Invested Assets [Line Items]
Other invested assets		57
Fair Value | LPs/LLCs
Other Invested Assets [Line Items]
Other invested assets		4,297	3,991
Fair Value | Private equity | LPs/LLCs
Other Invested Assets [Line Items]
Other invested assets		1,622	1,325
Fair Value | Hedge funds | LPs/LLCs
Other Invested Assets [Line Items]
Other invested assets		2,387	2,419
Fair Value | Real estate-related | LPs/LLCs
Other Invested Assets [Line Items]
Other invested assets		$ 288	$ 247
[1]	Prior period amounts have been reclassified to conform to current period presentation. See “Adoption of ASU 2016-01” in Note 2 for details.
[2]	See Note 4 for details of balances associated with variable interest entities.

Investments (Net Investment Inc

Investments (Net Investment Income) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Schedule of Investment Income, Reported Amounts, by Category [Line Items]
Gross investment income	$ 4,200	$ 4,241
Less: investment expenses	(202)	(180)
Net investment income	3,998	4,061
Assets supporting experience-rated contractholder liabilities
Schedule of Investment Income, Reported Amounts, by Category [Line Items]
Gross investment income	191	195
Equity securities, at fair value
Schedule of Investment Income, Reported Amounts, by Category [Line Items]
Gross investment income	35	90
Commercial mortgage and other loans
Schedule of Investment Income, Reported Amounts, by Category [Line Items]
Gross investment income	569	537
Policy loans
Schedule of Investment Income, Reported Amounts, by Category [Line Items]
Gross investment income	152	152
Other invested assets
Schedule of Investment Income, Reported Amounts, by Category [Line Items]
Gross investment income	141	332
Short-term investments and cash equivalents
Schedule of Investment Income, Reported Amounts, by Category [Line Items]
Gross investment income	72	44
Available-for-sale | Fixed maturities
Schedule of Investment Income, Reported Amounts, by Category [Line Items]
Gross investment income	2,954	2,795
Held-to-maturity | Fixed maturities
Schedule of Investment Income, Reported Amounts, by Category [Line Items]
Gross investment income	55	54
Trading | Fixed maturities
Schedule of Investment Income, Reported Amounts, by Category [Line Items]
Gross investment income	$ 31	$ 42

Investments (Realized Investmen

Investments (Realized Investment Gains Losses, Net) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Gain (Loss) on Investments [Line Items]
Realized investment gains (losses), net	$ 425	$ 427
Fixed maturities
Gain (Loss) on Investments [Line Items]
Realized investment gains (losses), net	78	174
Equity securities
Gain (Loss) on Investments [Line Items]
Realized investment gains (losses), net	0	256
Commercial mortgage and other loans
Gain (Loss) on Investments [Line Items]
Realized investment gains (losses), net	12	14
Investment real estate
Gain (Loss) on Investments [Line Items]
Realized investment gains (losses), net	2	6
LPs/LLCs
Gain (Loss) on Investments [Line Items]
Realized investment gains (losses), net	6	(11)
Derivatives
Gain (Loss) on Investments [Line Items]
Realized investment gains (losses), net	328	(11)
Other
Gain (Loss) on Investments [Line Items]
Realized investment gains (losses), net	$ (1)	$ (1)

Investments (Net Unrealized Gai

Investments (Net Unrealized Gains Losses on Investments) (Details) - USD ($) $ in Millions	Mar. 31, 2018	Dec. 31, 2017
Gain (Loss) on Investments [Line Items]
Net unrealized gains (losses) on investments	$ 27,854	$ 36,398
Fixed maturities | Available-for-sale | OTTI
Gain (Loss) on Investments [Line Items]
Net unrealized gains (losses) on investments	234	286
Fixed maturities | Available-for-sale | All other
Gain (Loss) on Investments [Line Items]
Net unrealized gains (losses) on investments	28,216	34,109
Equity securities | Available-for-sale
Gain (Loss) on Investments [Line Items]
Net unrealized gains (losses) on investments	0	2,027
Derivatives designated as cash flow hedges
Gain (Loss) on Investments [Line Items]
Net unrealized gains (losses) on investments	(622)	(39)
Other investments
Gain (Loss) on Investments [Line Items]
Net unrealized gains (losses) on investments	26	$ 15
Other investments | Held-to-maturity
Gain (Loss) on Investments [Line Items]
Net unrealized gains (losses) on investments	$ 0

Investments (Repurchase Agreeme

Investments (Repurchase Agreements and Securities Lending Transactions) (Details) - USD ($) $ in Millions	Mar. 31, 2018	Dec. 31, 2017
Transfer Of Certain Financial Assets Accounted For As Secured Borrowings [Line Items]
Total securities sold under agreements to repurchase	$ 8,633	$ 8,400
Total cash collateral for loaned securities	4,312	4,354
Overnight & Continuous
Transfer Of Certain Financial Assets Accounted For As Secured Borrowings [Line Items]
Total securities sold under agreements to repurchase	8,268	912
Total cash collateral for loaned securities	3,967	4,319
Up to 30 Days
Transfer Of Certain Financial Assets Accounted For As Secured Borrowings [Line Items]
Total securities sold under agreements to repurchase	365	7,488
Total cash collateral for loaned securities	345	35
30 days or greater
Transfer Of Certain Financial Assets Accounted For As Secured Borrowings [Line Items]
Total securities sold under agreements to repurchase	0	0
U.S. Treasury securities and obligations of U.S. government authorities and agencies
Transfer Of Certain Financial Assets Accounted For As Secured Borrowings [Line Items]
Total securities sold under agreements to repurchase	8,492	8,260
Total cash collateral for loaned securities	415	122
U.S. 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 securities sold under agreements to repurchase	8,150	911
Total cash collateral for loaned securities	94	87
U.S. 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 securities sold under agreements to repurchase	342	7,349
Total cash collateral for loaned securities	321	35
Obligations of U.S. states and their political subdivisions
Transfer Of Certain Financial Assets Accounted For As Secured Borrowings [Line Items]
Total cash collateral for loaned securities	129	103
Obligations of U.S. states and their political subdivisions | Overnight & Continuous
Transfer Of Certain Financial Assets Accounted For As Secured Borrowings [Line Items]
Total cash collateral for loaned securities	129	103
Obligations of U.S. states and their political subdivisions | 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 government bonds
Transfer Of Certain Financial Assets Accounted For As Secured Borrowings [Line Items]
Total cash collateral for loaned securities	287	335
Foreign government bonds | Overnight & Continuous
Transfer Of Certain Financial Assets Accounted For As Secured Borrowings [Line Items]
Total cash collateral for loaned securities	287	335
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 securities sold under agreements to repurchase	1	1
Total cash collateral for loaned securities	2,758	2,961
U.S. corporate public securities | Overnight & Continuous
Transfer Of Certain Financial Assets Accounted For As Secured Borrowings [Line Items]
Total securities sold under agreements to repurchase	1	1
Total cash collateral for loaned securities	2,758	2,961
U.S. corporate public securities | Up to 30 Days
Transfer Of Certain Financial Assets Accounted For As Secured Borrowings [Line Items]
Total securities sold under agreements to repurchase	0	0
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 securities sold under agreements to repurchase	0	0
Total cash collateral for loaned securities	630	655
Foreign corporate public securities | Overnight & Continuous
Transfer Of Certain Financial Assets Accounted For As Secured Borrowings [Line Items]
Total securities sold under agreements to repurchase	0	0
Total cash collateral for loaned securities	630	655
Foreign corporate public securities | Up to 30 Days
Transfer Of Certain Financial Assets Accounted For As Secured Borrowings [Line Items]
Total securities sold under agreements to repurchase	0	0
Total cash collateral for loaned securities	0	0
Residential mortgage-backed securities
Transfer Of Certain Financial Assets Accounted For As Secured Borrowings [Line Items]
Total securities sold under agreements to repurchase	140	139
Total cash collateral for loaned securities	24	0
Residential mortgage-backed securities | Overnight & Continuous
Transfer Of Certain Financial Assets Accounted For As Secured Borrowings [Line Items]
Total securities sold under agreements to repurchase	117	0
Total cash collateral for loaned securities	0	0
Residential mortgage-backed securities | Up to 30 Days
Transfer Of Certain Financial Assets Accounted For As Secured Borrowings [Line Items]
Total securities sold under agreements to repurchase	23	139
Total cash collateral for loaned securities	24	0
Equity securities
Transfer Of Certain Financial Assets Accounted For As Secured Borrowings [Line Items]
Total securities sold under agreements to repurchase	0	0
Total cash collateral for loaned securities	69	178
Equity securities | Overnight & Continuous
Transfer Of Certain Financial Assets Accounted For As Secured Borrowings [Line Items]
Total securities sold under agreements to repurchase	0	0
Total cash collateral for loaned securities	69	178
Equity securities | Up to 30 Days
Transfer Of Certain Financial Assets Accounted For As Secured Borrowings [Line Items]
Total securities sold under agreements to repurchase	0	0
Total cash collateral for loaned securities	$ 0	$ 0

Variable Interest Entities (Ass

Variable Interest Entities (Assets and Liabilities of Consolidated VIEs) (Details) - USD ($) $ in Millions		3 Months Ended	12 Months Ended
		Mar. 31, 2018	Dec. 31, 2017
Variable Interest Entity [Line Items]
Total liabilities of consolidated VIEs	[1]	$ 954	$ 1,518
Consolidated VIEs for Which the Company is the Investment Manager
Variable Interest Entity [Line Items]
Total assets of consolidated VIEs		3,897	4,421
Total liabilities of consolidated VIEs		$ 1,294	$ 1,951
VIEs Liabilities, maturities obligations (greater than)		5 years	5 years
Consolidated VIEs for Which the Company is the Investment Manager | Assets supporting experience-rated contractholder liabilities
Variable Interest Entity [Line Items]
Total assets of consolidated VIEs		$ 0	$ 0
Consolidated VIEs for Which the Company is the Investment Manager | Equity securities
Variable Interest Entity [Line Items]
Total assets of consolidated VIEs		28	28
Consolidated VIEs for Which the Company is the Investment Manager | Commercial mortgage and other loans
Variable Interest Entity [Line Items]
Total assets of consolidated VIEs		649	617
Consolidated VIEs for Which the Company is the Investment Manager | Other
Variable Interest Entity [Line Items]
Total assets of consolidated VIEs		1,368	1,390
Consolidated VIEs for Which the Company is the Investment Manager | Cash and cash equivalents
Variable Interest Entity [Line Items]
Total assets of consolidated VIEs		140	164
Consolidated VIEs for Which the Company is the Investment Manager | Accrued investment income
Variable Interest Entity [Line Items]
Total assets of consolidated VIEs		5	7
Consolidated VIEs for Which the Company is the Investment Manager | Other assets
Variable Interest Entity [Line Items]
Total assets of consolidated VIEs		462	440
Consolidated VIEs for Which the Company is the Investment Manager | Other liabilities
Variable Interest Entity [Line Items]
Total liabilities of consolidated VIEs		340	433
Consolidated VIEs for Which the Company is the Investment Manager | Notes Issued by Consolidated VIEs
Variable Interest Entity [Line Items]
Total liabilities of consolidated VIEs		954	1,518
Consolidated VIEs for Which the Company is the Investment Manager | Available-for-sale | Fixed maturities
Variable Interest Entity [Line Items]
Total assets of consolidated VIEs		79	69
Consolidated VIEs for Which the Company is the Investment Manager | Trading | Fixed maturities
Variable Interest Entity [Line Items]
Total assets of consolidated VIEs		1,078	1,623
Consolidated VIEs for Which the Company is the Investment Manager | Held-to-maturity | Fixed maturities
Variable Interest Entity [Line Items]
Total assets of consolidated VIEs		88	83
Other Consolidated VIEs
Variable Interest Entity [Line Items]
Total assets of consolidated VIEs		1,381	1,345
Total liabilities of consolidated VIEs		8	0
Other Consolidated VIEs | Assets supporting experience-rated contractholder liabilities
Variable Interest Entity [Line Items]
Total assets of consolidated VIEs		9	9
Other Consolidated VIEs | Equity securities
Variable Interest Entity [Line Items]
Total assets of consolidated VIEs		0	0
Other Consolidated VIEs | Commercial mortgage and other loans
Variable Interest Entity [Line Items]
Total assets of consolidated VIEs		0	0
Other Consolidated VIEs | Other
Variable Interest Entity [Line Items]
Total assets of consolidated VIEs		68	97
Other Consolidated VIEs | Cash and cash equivalents
Variable Interest Entity [Line Items]
Total assets of consolidated VIEs		0	0
Other Consolidated VIEs | Accrued investment income
Variable Interest Entity [Line Items]
Total assets of consolidated VIEs		4	4
Other Consolidated VIEs | Other assets
Variable Interest Entity [Line Items]
Total assets of consolidated VIEs		151	150
Other Consolidated VIEs | Other liabilities
Variable Interest Entity [Line Items]
Total liabilities of consolidated VIEs		8	0
Other Consolidated VIEs | Notes Issued by Consolidated VIEs
Variable Interest Entity [Line Items]
Total liabilities of consolidated VIEs		0	0
Other Consolidated VIEs | Available-for-sale | Fixed maturities
Variable Interest Entity [Line Items]
Total assets of consolidated VIEs		291	275
Other Consolidated VIEs | Trading | Fixed maturities
Variable Interest Entity [Line Items]
Total assets of consolidated VIEs		0	0
Other Consolidated VIEs | Held-to-maturity | Fixed maturities
Variable Interest Entity [Line Items]
Total assets of consolidated VIEs		858	810
ASU 2015-02, Wholly-owned by consolidated subsidiaries | Consolidated VIEs for Which the Company is the Investment Manager
Variable Interest Entity [Line Items]
Total assets of consolidated VIEs		$ 1,815	$ 1,716
[1]	See Note 4 for details of balances associated with variable interest entities.

Variable Interest Entities (Nar

Variable Interest Entities (Narrative) (Details) - USD ($)		Mar. 31, 2018	Dec. 31, 2017
Variable Interest Entity [Line Items]
Other invested assets	[1],[2]	$ 14,044,000,000	$ 13,373,000,000
LPs/LLCs
Variable Interest Entity [Line Items]
Other invested assets		9,286,000,000	8,720,000,000
Other Consolidated VIEs
Variable Interest Entity [Line Items]
Liabilities held within unconsolidated VIEs		0
Other Consolidated VIEs | Fixed maturities, AFS, Fixed maturities, trading, Equity securities and Other invested assets.
Variable Interest Entity [Line Items]
Maximum exposure to loss resulting from investment in unconsolidated VIEs		1,177,000,000	1,013,000,000
VIEs and Non-VIEs | LPs/LLCs
Variable Interest Entity [Line Items]
Other invested assets		$ 9,286,000,000	$ 8,720,000,000
[1]	Prior period amounts have been reclassified to conform to current period presentation. See “Adoption of ASU 2016-01” in Note 2 for details.
[2]	See Note 4 for details of balances associated with variable interest entities.

Derivative Instruments (Narrati

Derivative Instruments (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Dec. 31, 2017
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Total derivative assets	$ 1,219	$ 1,205
Total derivative liabilities	1,249	643
Gain (Loss) on Hedge Ineffectiveness, Net	13
Anticipated pre-tax gain (loss) reclassified from accumulated other comprehensive income (loss) to earnings	$ 157
Maximum Length of Time Hedged in Cash Flow Hedge	5 years
Maximum Length Of Time Hedged In Cash Flow Hedge (Existing Cash Flows)	40 years
Net investment hedges income (loss) before taxes	$ 524	526
Credit Derivatives [Line Items]
Credit Derivative Protection Purchased Notional Amount	145	178
Single Name Credit Default Swaps
Credit Derivatives [Line Items]
Credit Derivative, Maximum Exposure, Undiscounted	$ 110	114
Credit Derivatives Written Max Length Of Maturities (less than)	3 years
Credit Risk Derivatives, at Fair Value, Asset Net (Liability)	$ 2	2
Single Name Credit Default Swaps | NAIC 1
Credit Derivatives [Line Items]
Credit Derivative, Maximum Exposure, Undiscounted	37
Single Name Credit Default Swaps | NAIC 2
Credit Derivatives [Line Items]
Credit Derivative, Maximum Exposure, Undiscounted	61
Single Name Credit Default Swaps | NAIC 3
Credit Derivatives [Line Items]
Credit Derivative, Maximum Exposure, Undiscounted	5
Single Name Credit Default Swaps | NAIC 4
Credit Derivatives [Line Items]
Credit Derivative, Maximum Exposure, Undiscounted	1
Single Name Credit Default Swaps | NAIC 5
Credit Derivatives [Line Items]
Credit Derivative, Maximum Exposure, Undiscounted	1
Single Name Credit Default Swaps | NAIC 6
Credit Derivatives [Line Items]
Credit Derivative, Maximum Exposure, Undiscounted	5
Credit Default Swaps Referencing Indices
Credit Derivatives [Line Items]
Credit Derivative, Maximum Exposure, Undiscounted	$ 1,022	1,022
Credit Derivatives Written Max Length Of Maturities (less than)	29 years
Credit Risk Derivatives, at Fair Value, Asset Net (Liability)	$ 9	18
Credit Default Swaps Referencing Indices | NAIC 1
Credit Derivatives [Line Items]
Credit Derivative, Maximum Exposure, Undiscounted	52
Credit Default Swaps Referencing Indices | NAIC 4
Credit Derivatives [Line Items]
Credit Derivative, Maximum Exposure, Undiscounted	970
Credit Default Swap, Buying Protection
Credit Derivatives [Line Items]
Credit Risk Derivatives, at Fair Value, Asset Net (Liability)	$ (3)	$ (5)

Derivative Instruments (Gross N

Derivative Instruments (Gross Notional Amount and Fair Value of Derivatives Contracts) (Details) - USD ($) $ in Millions	Mar. 31, 2018	Dec. 31, 2017
Derivative [Line Items]
Notional	$ 412,765	$ 392,399
Assets	9,605	10,807
Liabilities	(6,922)	(5,955)
Net Embedded Derivative Liability	(7,031)	(8,748)
Derivatives Designated as Hedge Accounting Instruments:
Derivative [Line Items]
Notional	22,470	21,481
Assets	707	1,037
Liabilities	(1,276)	(831)
Derivatives Designated as Hedge Accounting Instruments: | Interest Rate Swaps
Derivative [Line Items]
Notional	2,993	3,204
Assets	190	271
Liabilities	(75)	(88)
Derivatives Designated as Hedge Accounting Instruments: | Foreign Currency Forwards
Derivative [Line Items]
Notional	595	545
Assets	0	0
Liabilities	(17)	(8)
Derivatives Designated as Hedge Accounting Instruments: | Foreign Currency Swaps
Derivative [Line Items]
Notional	18,882	17,732
Assets	517	766
Liabilities	(1,184)	(735)
Derivatives Not Qualifying as Hedge Accounting Instruments:
Derivative [Line Items]
Notional	390,295	370,918
Assets	8,898	9,770
Liabilities	(5,646)	(5,124)
Derivatives Not Qualifying as Hedge Accounting Instruments: | Interest Rate Swaps
Derivative [Line Items]
Notional	155,142	158,552
Assets	6,488	7,958
Liabilities	(3,707)	(3,509)
Derivatives Not Qualifying as Hedge Accounting Instruments: | Interest Rate Futures
Derivative [Line Items]
Notional	20,234	23,792
Assets	4	25
Liabilities	0	(1)
Derivatives Not Qualifying as Hedge Accounting Instruments: | Interest Rate Options
Derivative [Line Items]
Notional	21,724	18,456
Assets	171	167
Liabilities	(245)	(203)
Derivatives Not Qualifying as Hedge Accounting Instruments: | Interest Rate Forwards
Derivative [Line Items]
Notional	1,246	1,498
Assets	6	6
Liabilities	0	(2)
Derivatives Not Qualifying as Hedge Accounting Instruments: | Foreign Currency Forwards
Derivative [Line Items]
Notional	24,761	23,905
Assets	479	164
Liabilities	(235)	(254)
Derivatives Not Qualifying as Hedge Accounting Instruments: | Foreign Currency Options
Derivative [Line Items]
Notional	34	59
Assets	0	0
Liabilities	0	0
Derivatives Not Qualifying as Hedge Accounting Instruments: | Foreign Currency Swaps
Derivative [Line Items]
Notional	13,830	13,777
Assets	486	822
Liabilities	(653)	(414)
Derivatives Not Qualifying as Hedge Accounting Instruments: | Credit Default Swaps
Derivative [Line Items]
Notional	1,277	1,314
Assets	13	21
Liabilities	(5)	(5)
Derivatives Not Qualifying as Hedge Accounting Instruments: | Equity Futures
Derivative [Line Items]
Notional	140	710
Assets	0	2
Liabilities	0	(2)
Derivatives Not Qualifying as Hedge Accounting Instruments: | Equity Options
Derivative [Line Items]
Notional	53,400	36,007
Assets	636	588
Liabilities	(605)	(364)
Derivatives Not Qualifying as Hedge Accounting Instruments: | Total Return Swaps
Derivative [Line Items]
Notional	22,336	15,558
Assets	609	17
Liabilities	(196)	(369)
Derivatives Not Qualifying as Hedge Accounting Instruments: | Commodity Futures
Derivative [Line Items]
Notional	12	0
Assets	0	0
Liabilities	0	0
Derivatives Not Qualifying as Hedge Accounting Instruments: | Synthetic GICs
Derivative [Line Items]
Notional	76,159	77,290
Assets	6	0
Liabilities	$ 0	$ (1)

Derivative Instruments (Offsett

Derivative Instruments (Offsetting Assets and Liabilities) (Details) - USD ($) $ in Millions	Mar. 31, 2018	Dec. 31, 2017
Derivative Assets
Gross Amounts of Recognized Financial Instruments	$ 9,537	$ 10,710
Gross Amounts Offset in the Statements of Financial Position	(8,382)	(9,600)
Net Amounts Presented in the Statements of Financial Position	1,155	1,110
Financial Instruments/Collateral	(756)	(625)
Net Amount	399	485
Securities purchased under agreement to resell
Gross Amounts of Recognized Financial Instruments	1,388	240
Gross Amounts Offset in the Statements of Financial Position	0	0
Net Amounts Presented in the Statements of Financial Position	1,388	240
Financial Instruments/Collateral	(1,388)	(240)
Net Amount	0	0
Total assets
Gross Amounts of Recognized Financial Instruments	10,925	10,950
Gross Amounts Offset in the Statements of Financial Position	(8,382)	(9,600)
Net Amounts Presented in the Statements of Financial Position	2,543	1,350
Financial Instruments/Collateral	(2,144)	(865)
Net Amount	399	485
Derivative Liabilities
Gross Amounts of Recognized Financial Instruments	6,913	5,948
Gross Amounts Offset in the Statements of Financial Position	(5,673)	(5,312)
Net Amounts Presented in the Statements of Financial Position	1,240	636
Financial Instruments/Collateral	(1,240)	(588)
Net Amount	0	48
Securities sold under agreement to repurchase
Gross Amounts of Recognized Financial Instruments	8,633	8,400
Gross Amounts Offset in the Statements of Financial Position	0	0
Net Amounts Presented in the Statements of Financial Position	8,633	8,400
Financial Instruments/Collateral	(8,633)	(8,400)
Net Amount	0	0
Total liabilities
Gross Amounts of Recognized Financial Instruments	15,546	14,348
Gross Amounts Offset in the Statements of Financial Position	(5,673)	(5,312)
Net Amounts Presented in the Statements of Financial Position	9,873	9,036
Financial Instruments/Collateral	(9,873)	(8,988)
Net Amount	$ 0	$ 48

Derivative Instruments (Financi

Derivative Instruments (Financial Statement Classification and Impact of Derivatives Used in Qualifying and Non-qualifying Hedge Relationships) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Realized Investment Gains (Losses)
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	$ 342	$ (4)
Realized Investment Gains (Losses) | Derivatives Not Qualifying as Hedge Accounting Instruments:
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	325	(14)
Net Investment Income
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	44	38
Net Investment Income | Derivatives Not Qualifying as Hedge Accounting Instruments:
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	0	0
Other Income
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	(91)	(40)
Other Income | Derivatives Not Qualifying as Hedge Accounting Instruments:
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	0	(1)
Interest Expense
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	0	(1)
Interest Expense | Derivatives Not Qualifying as Hedge Accounting Instruments:
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	0	0
Interest Credited To Policyholders’ Account Balances
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	(83)	0
Interest Credited To Policyholders’ Account Balances | Derivatives Not Qualifying as Hedge Accounting Instruments:
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	0	0
AOCI
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	(585)	(201)
AOCI | Derivatives Not Qualifying as Hedge Accounting Instruments:
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	0	0
Fair value hedges | Realized Investment Gains (Losses) | Derivatives Designated as Hedge Accounting Instruments:
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	19	10
Fair value hedges | Net Investment Income | Derivatives Designated as Hedge Accounting Instruments:
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	(3)	(6)
Fair value hedges | Other Income | Derivatives Designated as Hedge Accounting Instruments:
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	0	0
Fair value hedges | Interest Expense | Derivatives Designated as Hedge Accounting Instruments:
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	0	0
Fair value hedges | Interest Credited To Policyholders’ Account Balances | Derivatives Designated as Hedge Accounting Instruments:
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	(83)	0
Fair value hedges | AOCI | Derivatives Designated as Hedge Accounting Instruments:
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	0	0
Cash flow hedges | Realized Investment Gains (Losses) | Derivatives Designated as Hedge Accounting Instruments:
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	0	0
Cash flow hedges | Net Investment Income | Derivatives Designated as Hedge Accounting Instruments:
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	47	44
Cash flow hedges | Other Income | Derivatives Designated as Hedge Accounting Instruments:
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	(91)	(39)
Cash flow hedges | Interest Expense | Derivatives Designated as Hedge Accounting Instruments:
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	0	(1)
Cash flow hedges | Interest Credited To Policyholders’ Account Balances | Derivatives Designated as Hedge Accounting Instruments:
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	0	0
Cash flow hedges | AOCI | Derivatives Designated as Hedge Accounting Instruments:
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	(583)	(198)
Net investment hedges | Realized Investment Gains (Losses) | Derivatives Designated as Hedge Accounting Instruments:
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	(2)	0
Net investment hedges | Net Investment Income | Derivatives Designated as Hedge Accounting Instruments:
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	0	0
Net investment hedges | Other Income | Derivatives Designated as Hedge Accounting Instruments:
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	0	0
Net investment hedges | Interest Expense | Derivatives Designated as Hedge Accounting Instruments:
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	0	0
Net investment hedges | Interest Credited To Policyholders’ Account Balances | Derivatives Designated as Hedge Accounting Instruments:
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	0	0
Net investment hedges | AOCI | Derivatives Designated as Hedge Accounting Instruments:
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	(2)	(3)
Interest Rate | Realized Investment Gains (Losses) | Derivatives Not Qualifying as Hedge Accounting Instruments:
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	(1,516)	(147)
Interest Rate | Net Investment Income | Derivatives Not Qualifying as Hedge Accounting Instruments:
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	0	0
Interest Rate | Other Income | Derivatives Not Qualifying as Hedge Accounting Instruments:
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	0	0
Interest Rate | Interest Expense | Derivatives Not Qualifying as Hedge Accounting Instruments:
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	0	0
Interest Rate | Interest Credited To Policyholders’ Account Balances | Derivatives Not Qualifying as Hedge Accounting Instruments:
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	0	0
Interest Rate | AOCI | Derivatives Not Qualifying as Hedge Accounting Instruments:
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	0	0
Interest Rate | Fair value hedges | Realized Investment Gains (Losses) | Derivatives Designated as Hedge Accounting Instruments:
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	17	8
Interest Rate | Fair value hedges | Net Investment Income | Derivatives Designated as Hedge Accounting Instruments:
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	(3)	(6)
Interest Rate | Fair value hedges | Other Income | Derivatives Designated as Hedge Accounting Instruments:
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	0	0
Interest Rate | Fair value hedges | Interest Expense | Derivatives Designated as Hedge Accounting Instruments:
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	0	0
Interest Rate | Fair value hedges | Interest Credited To Policyholders’ Account Balances | Derivatives Designated as Hedge Accounting Instruments:
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	(83)	0
Interest Rate | Fair value hedges | AOCI | Derivatives Designated as Hedge Accounting Instruments:
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	0	0
Interest Rate | Cash flow hedges | Realized Investment Gains (Losses) | Derivatives Designated as Hedge Accounting Instruments:
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	0	0
Interest Rate | Cash flow hedges | Net Investment Income | Derivatives Designated as Hedge Accounting Instruments:
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	0	0
Interest Rate | Cash flow hedges | Other Income | Derivatives Designated as Hedge Accounting Instruments:
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	0	0
Interest Rate | Cash flow hedges | Interest Expense | Derivatives Designated as Hedge Accounting Instruments:
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	0	(1)
Interest Rate | Cash flow hedges | Interest Credited To Policyholders’ Account Balances | Derivatives Designated as Hedge Accounting Instruments:
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	0	0
Interest Rate | Cash flow hedges | AOCI | Derivatives Designated as Hedge Accounting Instruments:
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	7	3
Currency | Realized Investment Gains (Losses) | Derivatives Not Qualifying as Hedge Accounting Instruments:
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	412	38
Currency | Net Investment Income | Derivatives Not Qualifying as Hedge Accounting Instruments:
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	0	0
Currency | Other Income | Derivatives Not Qualifying as Hedge Accounting Instruments:
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	1	(1)
Currency | Interest Expense | Derivatives Not Qualifying as Hedge Accounting Instruments:
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	0	0
Currency | Interest Credited To Policyholders’ Account Balances | Derivatives Not Qualifying as Hedge Accounting Instruments:
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	0	0
Currency | AOCI | Derivatives Not Qualifying as Hedge Accounting Instruments:
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	0	0
Currency | Fair value hedges | Realized Investment Gains (Losses) | Derivatives Designated as Hedge Accounting Instruments:
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	2	2
Currency | Fair value hedges | Net Investment Income | Derivatives Designated as Hedge Accounting Instruments:
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	0	0
Currency | Fair value hedges | Other Income | Derivatives Designated as Hedge Accounting Instruments:
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	0	0
Currency | Fair value hedges | Interest Expense | Derivatives Designated as Hedge Accounting Instruments:
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	0	0
Currency | Fair value hedges | Interest Credited To Policyholders’ Account Balances | Derivatives Designated as Hedge Accounting Instruments:
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	0	0
Currency | Fair value hedges | AOCI | Derivatives Designated as Hedge Accounting Instruments:
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	0	0
Currency | Cash flow hedges | Realized Investment Gains (Losses) | Derivatives Designated as Hedge Accounting Instruments:
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	0
Currency | Cash flow hedges | Net Investment Income | Derivatives Designated as Hedge Accounting Instruments:
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	0
Currency | Cash flow hedges | Other Income | Derivatives Designated as Hedge Accounting Instruments:
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	0
Currency | Cash flow hedges | Interest Expense | Derivatives Designated as Hedge Accounting Instruments:
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	0
Currency | Cash flow hedges | Interest Credited To Policyholders’ Account Balances | Derivatives Designated as Hedge Accounting Instruments:
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	0
Currency | Cash flow hedges | AOCI | Derivatives Designated as Hedge Accounting Instruments:
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	(8)
Currency | Net investment hedges | Realized Investment Gains (Losses) | Derivatives Designated as Hedge Accounting Instruments:
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	(2)	0
Currency | Net investment hedges | Net Investment Income | Derivatives Designated as Hedge Accounting Instruments:
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	0	0
Currency | Net investment hedges | Other Income | Derivatives Designated as Hedge Accounting Instruments:
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	0	0
Currency | Net investment hedges | Interest Expense | Derivatives Designated as Hedge Accounting Instruments:
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	0	0
Currency | Net investment hedges | Interest Credited To Policyholders’ Account Balances | Derivatives Designated as Hedge Accounting Instruments:
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	0	0
Currency | Net investment hedges | AOCI | Derivatives Designated as Hedge Accounting Instruments:
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	(2)	(3)
Currency/Interest Rate | Realized Investment Gains (Losses) | Derivatives Not Qualifying as Hedge Accounting Instruments:
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	(555)	(87)
Currency/Interest Rate | Net Investment Income | Derivatives Not Qualifying as Hedge Accounting Instruments:
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	0	0
Currency/Interest Rate | Other Income | Derivatives Not Qualifying as Hedge Accounting Instruments:
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	(1)	0
Currency/Interest Rate | Interest Expense | Derivatives Not Qualifying as Hedge Accounting Instruments:
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	0	0
Currency/Interest Rate | Interest Credited To Policyholders’ Account Balances | Derivatives Not Qualifying as Hedge Accounting Instruments:
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	0	0
Currency/Interest Rate | AOCI | Derivatives Not Qualifying as Hedge Accounting Instruments:
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	0	0
Currency/Interest Rate | Cash flow hedges | Realized Investment Gains (Losses) | Derivatives Designated as Hedge Accounting Instruments:
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	0	0
Currency/Interest Rate | Cash flow hedges | Net Investment Income | Derivatives Designated as Hedge Accounting Instruments:
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	47	44
Currency/Interest Rate | Cash flow hedges | Other Income | Derivatives Designated as Hedge Accounting Instruments:
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	(91)	(39)
Currency/Interest Rate | Cash flow hedges | Interest Expense | Derivatives Designated as Hedge Accounting Instruments:
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	0	0
Currency/Interest Rate | Cash flow hedges | Interest Credited To Policyholders’ Account Balances | Derivatives Designated as Hedge Accounting Instruments:
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	0	0
Currency/Interest Rate | Cash flow hedges | AOCI | Derivatives Designated as Hedge Accounting Instruments:
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	(582)	(201)
Currency/Interest Rate | Net investment hedges | Realized Investment Gains (Losses) | Derivatives Designated as Hedge Accounting Instruments:
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	0	0
Currency/Interest Rate | Net investment hedges | Net Investment Income | Derivatives Designated as Hedge Accounting Instruments:
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	0	0
Currency/Interest Rate | Net investment hedges | Other Income | Derivatives Designated as Hedge Accounting Instruments:
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	0	0
Currency/Interest Rate | Net investment hedges | Interest Expense | Derivatives Designated as Hedge Accounting Instruments:
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	0	0
Currency/Interest Rate | Net investment hedges | Interest Credited To Policyholders’ Account Balances | Derivatives Designated as Hedge Accounting Instruments:
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	0	0
Currency/Interest Rate | Net investment hedges | AOCI | Derivatives Designated as Hedge Accounting Instruments:
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	0	0
Credit | Realized Investment Gains (Losses) | Derivatives Not Qualifying as Hedge Accounting Instruments:
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	(5)	10
Credit | Net Investment Income | Derivatives Not Qualifying as Hedge Accounting Instruments:
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	0	0
Credit | Other Income | Derivatives Not Qualifying as Hedge Accounting Instruments:
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	0	0
Credit | Interest Expense | Derivatives Not Qualifying as Hedge Accounting Instruments:
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	0	0
Credit | Interest Credited To Policyholders’ Account Balances | Derivatives Not Qualifying as Hedge Accounting Instruments:
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	0	0
Credit | AOCI | Derivatives Not Qualifying as Hedge Accounting Instruments:
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	0	0
Equity | Realized Investment Gains (Losses) | Derivatives Not Qualifying as Hedge Accounting Instruments:
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	10	(704)
Equity | Net Investment Income | Derivatives Not Qualifying as Hedge Accounting Instruments:
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	0	0
Equity | Other Income | Derivatives Not Qualifying as Hedge Accounting Instruments:
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	0	0
Equity | Interest Expense | Derivatives Not Qualifying as Hedge Accounting Instruments:
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	0	0
Equity | Interest Credited To Policyholders’ Account Balances | Derivatives Not Qualifying as Hedge Accounting Instruments:
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	0	0
Equity | AOCI | Derivatives Not Qualifying as Hedge Accounting Instruments:
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	0	0
Commodity | Realized Investment Gains (Losses) | Derivatives Not Qualifying as Hedge Accounting Instruments:
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	0	0
Commodity | Net Investment Income | Derivatives Not Qualifying as Hedge Accounting Instruments:
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	0	0
Commodity | Other Income | Derivatives Not Qualifying as Hedge Accounting Instruments:
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	0	0
Commodity | Interest Expense | Derivatives Not Qualifying as Hedge Accounting Instruments:
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	0	0
Commodity | Interest Credited To Policyholders’ Account Balances | Derivatives Not Qualifying as Hedge Accounting Instruments:
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	0	0
Commodity | AOCI | Derivatives Not Qualifying as Hedge Accounting Instruments:
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	0	0
Embedded Derivatives | Realized Investment Gains (Losses) | Derivatives Not Qualifying as Hedge Accounting Instruments:
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	1,979	876
Embedded Derivatives | Net Investment Income | Derivatives Not Qualifying as Hedge Accounting Instruments:
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	0	0
Embedded Derivatives | Other Income | Derivatives Not Qualifying as Hedge Accounting Instruments:
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	0	0
Embedded Derivatives | Interest Expense | Derivatives Not Qualifying as Hedge Accounting Instruments:
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	0	0
Embedded Derivatives | Interest Credited To Policyholders’ Account Balances | Derivatives Not Qualifying as Hedge Accounting Instruments:
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	0	0
Embedded Derivatives | AOCI | Derivatives Not Qualifying as Hedge Accounting Instruments:
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	$ 0	$ 0

Derivative Instruments (Current

Derivative Instruments (Current Period Cash Flow Hedges in AOCI (loss) before Taxes) (Details) - Cash flow hedges in AOCI $ in Millions	3 Months Ended
	Mar. 31, 2018USD ($)
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Balance, beginning	$ (39)
Net deferred gains/(losses) on cash flow hedges from January 1 to March 31, 2018	(635)
Amount reclassified into current period earnings	52
Balance, ending	$ (622)

Fair Value of Assets and Liab65

Fair Value of Assets and Liabilities (Balances of Assets and Liabilities Measured at Fair Value on a Recurring Basis) (Details) - USD ($) $ in Millions		Mar. 31, 2018	Dec. 31, 2017
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fixed maturities, available-for-sale	[1]	$ 347,630	$ 346,780
Assets supporting experience-rated contractholder liabilities	[1],[2]	21,637	22,097
Fixed maturities trading	[1],[2]	2,885	3,507
Equity securities	[1],[2]	7,289	7,329
Commercial mortgage and other loans	[1]	58,098	56,045
Other invested assets	[1],[2]	14,044	13,373
Other assets	[1]	17,112	17,250
Separate account assets		300,585	306,617
TOTAL ASSETS		829,677	832,136
Future policy benefits		261,144	257,317
Other Liabilities	[1]	17,689	16,619
Total liabilities		777,502	777,625
Netting		8,382	9,600
Embedded Derivative, Fair Value of Embedded Derivative, Net Liability		7,031	8,748
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		6,900	8,700
Embedded Derivative, Fair Value Of Embedded Derivative Gross Asset		1,100	900
Embedded Derivative, Fair Value Of Embedded Derivative Gross Liability		8,000	9,600
Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fixed maturities, available-for-sale		347,630	346,780
Assets supporting experience-rated contractholder liabilities		21,509	21,988
Fixed maturities trading		2,885	3,507
Equity securities		7,289	7,329
Commercial mortgage and other loans		298	593
Other invested assets		1,350	1,337
Short-term investments		4,293	5,789
Cash equivalents		6,595	8,298
Other assets		3	14
Separate account assets		275,066	280,393
TOTAL ASSETS		666,918	676,028
Future policy benefits		6,981	8,720
Other Liabilities		1,310	688
Notes issued by consolidated VIEs		612	1,196
Total liabilities		8,903	10,604
Assets Netting		(8,382)	(9,600)
Liabilities Netting		(5,673)	(5,312)
Netting		2,709	4,288
Fair Value, Measurements, Recurring | Other invested assets
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets Netting		(8,382)	(9,600)
Fair Value, Measurements, Recurring | Other liabilities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Liabilities Netting		(5,673)	(5,312)
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		25,021	26,138
Assets supporting experience-rated contractholder liabilities		199	201
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		10,295	10,471
Assets supporting experience-rated contractholder liabilities		201	208
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		110,325	103,419
Assets supporting experience-rated contractholder liabilities		1,104	1,057
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		85,826	90,224
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		33,243	33,734
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		29,178	29,408
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		24,643	24,227
Fair Value, Measurements, Recurring | Corporate securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets supporting experience-rated contractholder liabilities		13,627	14,073
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		12,817	12,233
Assets supporting experience-rated contractholder liabilities		1,426	1,392
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		12,863	13,281
Assets supporting experience-rated contractholder liabilities		2,369	2,311
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		3,419	3,645
Assets supporting experience-rated contractholder liabilities		908	966
Fair Value, Measurements, Recurring | Equity securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets supporting experience-rated contractholder liabilities		1,652	1,643
Fair Value, Measurements, Recurring | All other
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets supporting experience-rated contractholder liabilities		23	137
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
Assets supporting experience-rated contractholder liabilities		1,390	1,406
Fixed maturities trading		0	0
Equity securities		5,865	5,978
Commercial mortgage and other loans		0	0
Other invested assets		4	32
Short-term investments		2,693	3,931
Cash equivalents		1,771	1,900
Other assets		0	0
Separate account assets		43,896	45,397
TOTAL ASSETS		55,619	58,644
Future policy benefits		0	0
Other Liabilities		5	4
Notes issued by consolidated VIEs		0	0
Total liabilities		5	4
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
Assets supporting experience-rated contractholder liabilities		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
Assets supporting experience-rated contractholder liabilities		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
Assets supporting experience-rated contractholder liabilities		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 | Corporate securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets supporting experience-rated contractholder liabilities		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
Assets supporting experience-rated contractholder liabilities		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
Assets supporting experience-rated contractholder liabilities		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
Assets supporting experience-rated contractholder liabilities		0	0
Fair Value, Measurements, Recurring | Level 1 | Equity securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets supporting experience-rated contractholder liabilities		1,390	1,381
Fair Value, Measurements, Recurring | Level 1 | All other
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets supporting experience-rated contractholder liabilities		0	25
Fair Value, Measurements, Recurring | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fixed maturities, available-for-sale		337,804	337,084
Assets supporting experience-rated contractholder liabilities		18,755	19,163
Fixed maturities trading		2,681	3,351
Equity securities		639	556
Commercial mortgage and other loans		298	593
Other invested assets		9,584	10,768
Short-term investments		1,590	1,850
Cash equivalents		4,824	6,398
Other assets		3	1
Separate account assets		228,810	232,874
TOTAL ASSETS		604,988	612,638
Future policy benefits		0	0
Other Liabilities		6,922	5,946
Notes issued by consolidated VIEs		0	0
Total liabilities		6,922	5,946
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		24,962	26,086
Assets supporting experience-rated contractholder liabilities		199	201
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		10,290	10,466
Assets supporting experience-rated contractholder liabilities		201	208
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		110,197	103,271
Assets supporting experience-rated contractholder liabilities		884	834
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		85,718	90,115
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		31,413	31,845
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		29,110	29,329
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		23,914	23,528
Fair Value, Measurements, Recurring | Level 2 | Corporate securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets supporting experience-rated contractholder liabilities		13,159	13,611
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		6,063	5,629
Assets supporting experience-rated contractholder liabilities		762	670
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		12,820	13,268
Assets supporting experience-rated contractholder liabilities		2,369	2,311
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		3,317	3,547
Assets supporting experience-rated contractholder liabilities		908	965
Fair Value, Measurements, Recurring | Level 2 | Equity securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets supporting experience-rated contractholder liabilities		257	258
Fair Value, Measurements, Recurring | Level 2 | All other
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets supporting experience-rated contractholder liabilities		16	105
Fair Value, Measurements, Recurring | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fixed maturities, available-for-sale		9,826	9,696
Assets supporting experience-rated contractholder liabilities		1,364	1,419
Fixed maturities trading		204	156
Equity securities		785	795
Commercial mortgage and other loans		0	0
Other invested assets		144	137
Short-term investments		10	8
Cash equivalents		0	0
Other assets		0	13
Separate account assets		2,360	2,122
TOTAL ASSETS		14,693	14,346
Future policy benefits		6,981	8,720
Other Liabilities		56	50
Notes issued by consolidated VIEs		612	1,196
Total liabilities		7,649	9,966
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		59	52
Assets supporting experience-rated contractholder liabilities		0	0
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		5	5
Assets supporting experience-rated contractholder liabilities		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		128	148
Assets supporting experience-rated contractholder liabilities		220	223
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		108	109
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		1,830	1,889
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		68	79
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		729	699
Fair Value, Measurements, Recurring | Level 3 | Corporate securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets supporting experience-rated contractholder liabilities		468	462
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		6,754	6,604
Assets supporting experience-rated contractholder liabilities		664	722
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		43	13
Assets supporting experience-rated contractholder liabilities		0	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		102	98
Assets supporting experience-rated contractholder liabilities		0	1
Fair Value, Measurements, Recurring | Level 3 | Equity securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets supporting experience-rated contractholder liabilities		5	4
Fair Value, Measurements, Recurring | Level 3 | All other
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets supporting experience-rated contractholder liabilities		7	7
Prudential Netting Agreement | U.S. corporate private securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fixed maturities, available-for-sale		2,846	2,660
Prudential Netting Agreement | 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		2,846	2,660
Other invested assets
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value investment measured at NAV per share		4,297	1,969
Separate account assets
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value investment measured at NAV per share		$ 25,519	$ 26,224
[1]	See Note 4 for details of balances associated with variable interest entities.
[2]	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 Liab66

Fair Value of Assets and Liabilities Fair Value of Assets and Liabilities (Transfers Between Level 1 and Level 2) (Details) - Separate account assets - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value Assets Level1 To Level2 Transfers	$ 171	$ 46
Fair Value Assets Level2 to Level1 Transfers	$ 7	$ 57

Fair Value of Assets and Liab67

Fair Value of Assets and Liabilities (Quantitative Info for Level 3 Inputs) (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Mar. 31, 2018	Dec. 31, 2017
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Future policy benefits	$ 261,144	$ 257,317
Fair Value, Measurements, Recurring
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Future policy benefits	$ 6,981	8,720
Level 3 | Minimum
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Fair Value Inputs, Policyholder Age	35 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]
Future policy benefits	$ 6,981	$ 8,720
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	0.24%	0.12%
Utilization rate	52.00%	52.00%
Withdrawal rate (greater than maximum range)	78.00%	78.00%
Mortality rate	0.00%	0.00%
Equity volatility curve	16.00%	13.00%
Level 3 | Internal | Minimum | Discounted cash flow | Corporate securities
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Discount rate	0.64%	0.65%
Level 3 | Internal | Minimum | Discounted cash flow | Separate Accounts Commercial Mortgage Loan
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Fair value inputs credit risk	1.02%	1.08%
Level 3 | Internal | Minimum | Market comparables | Corporate securities
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
EBITDA multiples	4.5	7.4
Level 3 | Internal | Minimum | Liquidation | Corporate securities
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Liquidation value	13.31%	13.10%
Level 3 | Internal | Maximum | Discounted cash flow | Future Policy Benefits
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Lapse rate	12.00%	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	14.00%	14.00%
Equity volatility curve	24.00%	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%	22.00%
Level 3 | Internal | Maximum | Discounted cash flow | Separate Accounts Commercial Mortgage Loan
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Fair value inputs credit risk	2.69%	2.78%
Level 3 | Internal | Maximum | Market comparables | Corporate securities
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
EBITDA multiples	7.6	7.4
Level 3 | Internal | Maximum | Liquidation | Corporate securities
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Liquidation value	13.70%	25.00%
Level 3 | Internal | Weighted Average | Discounted cash flow | Corporate securities
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Discount rate	7.41%	7.20%
Level 3 | Internal | Weighted Average | Discounted cash flow | Separate Accounts Commercial Mortgage Loan
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Fair value inputs credit risk	1.15%	1.20%
Level 3 | Internal | Weighted Average | Market comparables | Corporate securities
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
EBITDA multiples	6.2	7.4
Level 3 | Internal | Weighted Average | Liquidation | Corporate securities
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Liquidation value	13.54%	14.68%
Level 3 | Internal | Fair Value, Measurements, Recurring | Future Policy Benefits
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Future policy benefits	$ 6,981	$ 8,720
Level 3 | Internal | Fair Value, Measurements, Recurring | Corporate securities
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Corporate securities	1,377	1,352
Level 3 | Internal | Fair Value, Measurements, Recurring | Separate Accounts Commercial Mortgage Loan
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Commercial mortgage loans	$ 798	$ 821

Fair Value of Assets and Liab68

Fair Value of Assets and Liabilities (Changes in Level 3 Assets and Liabilities) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Equity securities
Fair Value, Assets And Liabilities Measured On Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair Value, beginning of period	$ 795	$ 752
Total gains (losses) (realized/unrealized):
Included in other comprehensive income (loss)	0	11
Net investment income	0	0
Purchases	7	22
Sales	(17)	(28)
Issuances	0	0
Settlements	(37)	(6)
Foreign currency translation	21	9
Other	5	0
Transfers into Level 3	0	31
Transfers out of Level 3	(3)	(1)
Fair Value, end of period	785	811
Equity securities | Realized investment gains (losses), net
Total gains (losses) (realized/unrealized):
Included in earnings	0	0
Unrealized gains (losses) for assets/liabilities still held:
Included in earnings	0	0
Equity securities | Other income
Total gains (losses) (realized/unrealized):
Included in earnings	14	21
Unrealized gains (losses) for assets/liabilities still held:
Included in earnings	13	21
Assets supporting experience-rated contractholder liabilities | Foreign government
Fair Value, Assets And Liabilities Measured On Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair Value, beginning of period	223	227
Total gains (losses) (realized/unrealized):
Net investment income	1	1
Purchases	0	0
Sales	0	0
Issuances	0	0
Settlements	0	0
Foreign currency translation	0	0
Other	0	0
Transfers into Level 3	0	0
Transfers out of Level 3	0	0
Fair Value, end of period	220	227
Assets supporting experience-rated contractholder liabilities | Foreign government | Realized investment gains (losses), net
Total gains (losses) (realized/unrealized):
Included in earnings	0	0
Unrealized gains (losses) for assets/liabilities still held:
Included in earnings	0	0
Assets supporting experience-rated contractholder liabilities | Foreign government | Other income
Total gains (losses) (realized/unrealized):
Included in earnings	(4)	(1)
Unrealized gains (losses) for assets/liabilities still held:
Included in earnings	(4)	(1)
Assets supporting experience-rated contractholder liabilities | Corporate securities
Fair Value, Assets And Liabilities Measured On Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair Value, beginning of period	462	154
Total gains (losses) (realized/unrealized):
Net investment income	0	0
Purchases	24	31
Sales	0	(2)
Issuances	0	0
Settlements	(18)	(30)
Foreign currency translation	0	0
Other	0	0
Transfers into Level 3	0	21
Transfers out of Level 3	(1)	(4)
Fair Value, end of period	468	174
Assets supporting experience-rated contractholder liabilities | Corporate securities | Realized investment gains (losses), net
Total gains (losses) (realized/unrealized):
Included in earnings	0	0
Unrealized gains (losses) for assets/liabilities still held:
Included in earnings	0	0
Assets supporting experience-rated contractholder liabilities | Corporate securities | Other income
Total gains (losses) (realized/unrealized):
Included in earnings	1	4
Unrealized gains (losses) for assets/liabilities still held:
Included in earnings	0	2
Assets supporting experience-rated contractholder liabilities | Structured securities
Fair Value, Assets And Liabilities Measured On Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair Value, beginning of period	722	290
Total gains (losses) (realized/unrealized):
Net investment income	0	0
Purchases	3	190
Sales	0	0
Issuances	0	0
Settlements	(13)	(8)
Foreign currency translation	0	0
Other	0	0
Transfers into Level 3	28	233
Transfers out of Level 3	(76)	(29)
Fair Value, end of period	664	676
Assets supporting experience-rated contractholder liabilities | Structured securities | Realized investment gains (losses), net
Total gains (losses) (realized/unrealized):
Included in earnings	0	0
Unrealized gains (losses) for assets/liabilities still held:
Included in earnings	0	0
Assets supporting experience-rated contractholder liabilities | Structured securities | Other income
Total gains (losses) (realized/unrealized):
Included in earnings	0	0
Unrealized gains (losses) for assets/liabilities still held:
Included in earnings	0	0
Assets supporting experience-rated contractholder liabilities | Equity securities
Fair Value, Assets And Liabilities Measured On Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair Value, beginning of period	4
Total gains (losses) (realized/unrealized):
Net investment income	0
Purchases	0
Sales	0
Issuances	0
Settlements	0
Foreign currency translation	0
Other	0
Transfers into Level 3	0
Transfers out of Level 3	0
Fair Value, end of period	5
Assets supporting experience-rated contractholder liabilities | Equity securities | Realized investment gains (losses), net
Total gains (losses) (realized/unrealized):
Included in earnings	0
Unrealized gains (losses) for assets/liabilities still held:
Included in earnings	0
Assets supporting experience-rated contractholder liabilities | Equity securities | Other income
Total gains (losses) (realized/unrealized):
Included in earnings	1
Unrealized gains (losses) for assets/liabilities still held:
Included in earnings	1
Assets supporting experience-rated contractholder liabilities | All other activity
Fair Value, Assets And Liabilities Measured On Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair Value, beginning of period	7
Total gains (losses) (realized/unrealized):
Net investment income	0
Purchases	19
Sales	0
Issuances	0
Settlements	(19)
Foreign currency translation	0
Other	0
Transfers into Level 3	0
Transfers out of Level 3	0
Fair Value, end of period	7
Assets supporting experience-rated contractholder liabilities | All other activity | Realized investment gains (losses), net
Total gains (losses) (realized/unrealized):
Included in earnings	0
Unrealized gains (losses) for assets/liabilities still held:
Included in earnings	0
Assets supporting experience-rated contractholder liabilities | All other activity | Other income
Total gains (losses) (realized/unrealized):
Included in earnings	0
Unrealized gains (losses) for assets/liabilities still held:
Included in earnings	0
Other invested assets
Fair Value, Assets And Liabilities Measured On Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair Value, beginning of period	137	8
Total gains (losses) (realized/unrealized):
Included in other comprehensive income (loss)	0	0
Net investment income	0	0
Purchases	1	0
Sales	0	0
Issuances	0	0
Settlements	0	0
Foreign currency translation	0	0
Other	(2)	71
Transfers into Level 3	0	0
Transfers out of Level 3	0	0
Fair Value, end of period	144	79
Other invested assets | Realized investment gains (losses), net
Total gains (losses) (realized/unrealized):
Included in earnings	8	0
Unrealized gains (losses) for assets/liabilities still held:
Included in earnings	1	(4)
Other invested assets | Other income
Total gains (losses) (realized/unrealized):
Included in earnings	0	0
Unrealized gains (losses) for assets/liabilities still held:
Included in earnings	0	0
Short-term investments
Fair Value, Assets And Liabilities Measured On Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair Value, beginning of period	8	1
Total gains (losses) (realized/unrealized):
Included in other comprehensive income (loss)	0	0
Net investment income	0	0
Purchases	14	0
Sales	0	0
Issuances	0	0
Settlements	(12)	0
Foreign currency translation	1	0
Other	0	0
Transfers into Level 3	0	0
Transfers out of Level 3	0	0
Fair Value, end of period	10	1
Short-term investments | Realized investment gains (losses), net
Total gains (losses) (realized/unrealized):
Included in earnings	(1)	0
Unrealized gains (losses) for assets/liabilities still held:
Included in earnings	(1)	0
Short-term investments | Other income
Total gains (losses) (realized/unrealized):
Included in earnings	0	0
Unrealized gains (losses) for assets/liabilities still held:
Included in earnings	0	0
Cash equivalents
Fair Value, Assets And Liabilities Measured On Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair Value, beginning of period	0	0
Total gains (losses) (realized/unrealized):
Included in other comprehensive income (loss)	0	0
Net investment income	0	2
Purchases	0	0
Sales	0	0
Issuances	0	0
Settlements	0	0
Foreign currency translation	0	0
Other	0	4
Transfers into Level 3	0	0
Transfers out of Level 3	0	0
Fair Value, end of period	0	6
Cash equivalents | Realized investment gains (losses), net
Total gains (losses) (realized/unrealized):
Included in earnings	0	0
Unrealized gains (losses) for assets/liabilities still held:
Included in earnings	0	0
Cash equivalents | Other income
Total gains (losses) (realized/unrealized):
Included in earnings	0	0
Unrealized gains (losses) for assets/liabilities still held:
Included in earnings	0	0
Other assets
Fair Value, Assets And Liabilities Measured On Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair Value, beginning of period	13	0
Total gains (losses) (realized/unrealized):
Net investment income	0	0
Purchases	0	8
Sales	0	0
Issuances	0	0
Settlements	0	0
Foreign currency translation	0	0
Other	0	0
Transfers into Level 3	0	0
Transfers out of Level 3	0	0
Fair Value, end of period	0	0
Other assets | Realized investment gains (losses), net
Total gains (losses) (realized/unrealized):
Included in earnings	(13)	(8)
Unrealized gains (losses) for assets/liabilities still held:
Included in earnings	(13)	(8)
Other assets | Other income
Total gains (losses) (realized/unrealized):
Included in earnings	0	0
Unrealized gains (losses) for assets/liabilities still held:
Included in earnings	0	0
Other assets | Interest credited to policyholders’ account balances
Total gains (losses) (realized/unrealized):
Included in earnings	0	0
Unrealized gains (losses) for assets/liabilities still held:
Included in earnings	0	0
Separate accounts assets
Fair Value, Assets And Liabilities Measured On Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair Value, beginning of period	2,122	1,849
Total gains (losses) (realized/unrealized):
Net investment income	0	0
Purchases	237	155
Sales	(8)	(4)
Issuances	0	0
Settlements	(121)	(206)
Foreign currency translation	0	0
Other	0	0
Transfers into Level 3	195	191
Transfers out of Level 3	(32)	(34)
Fair Value, end of period	2,360	1,975
Separate accounts assets | Realized investment gains (losses), net
Total gains (losses) (realized/unrealized):
Included in earnings	0	0
Unrealized gains (losses) for assets/liabilities still held:
Included in earnings	0	0
Separate accounts assets | Other income
Total gains (losses) (realized/unrealized):
Included in earnings	0	0
Unrealized gains (losses) for assets/liabilities still held:
Included in earnings	0	0
Separate accounts assets | Interest credited to policyholders’ account balances
Total gains (losses) (realized/unrealized):
Included in earnings	(33)	24
Unrealized gains (losses) for assets/liabilities still held:
Included in earnings	(26)	23
Future policy benefits
Fair Value, Assets And Liabilities Measured On Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair Value, beginning of period	(8,720)	(8,238)
Total gains (losses) (realized/unrealized):
Net investment income	0	0
Purchases	0	0
Sales	0	0
Issuances	(287)	(275)
Settlements	0	0
Foreign currency translation	0	(2)
Other	0	0
Transfers into Level 3	0	0
Transfers out of Level 3	0	0
Fair Value, end of period	(6,981)	(7,640)
Future policy benefits | Realized investment gains (losses), net
Total gains (losses) (realized/unrealized):
Included in earnings	2,026	875
Unrealized gains (losses) for assets/liabilities still held:
Included in earnings	1,937	813
Future policy benefits | Other income
Total gains (losses) (realized/unrealized):
Included in earnings	0	0
Unrealized gains (losses) for assets/liabilities still held:
Included in earnings	0	0
Future policy benefits | Interest credited to policyholders’ account balances
Total gains (losses) (realized/unrealized):
Included in earnings	0	0
Unrealized gains (losses) for assets/liabilities still held:
Included in earnings	0	0
Other liabilities
Fair Value, Assets And Liabilities Measured On Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair Value, beginning of period	(50)	(22)
Total gains (losses) (realized/unrealized):
Net investment income	0	0
Purchases	10	0
Sales	0	0
Issuances	0	0
Settlements	2	1
Foreign currency translation	0	0
Other	1	0
Transfers into Level 3	0	0
Transfers out of Level 3	0	0
Fair Value, end of period	(56)	(27)
Other liabilities | Realized investment gains (losses), net
Total gains (losses) (realized/unrealized):
Included in earnings	(19)	(6)
Unrealized gains (losses) for assets/liabilities still held:
Included in earnings	(13)	(6)
Other liabilities | Other income
Total gains (losses) (realized/unrealized):
Included in earnings	0	0
Unrealized gains (losses) for assets/liabilities still held:
Included in earnings	0	0
Other liabilities | Interest credited to policyholders’ account balances
Total gains (losses) (realized/unrealized):
Included in earnings	0	0
Unrealized gains (losses) for assets/liabilities still held:
Included in earnings	0	0
Notes Issued by Consolidated VIEs
Fair Value, Assets And Liabilities Measured On Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair Value, beginning of period	(1,196)	(1,839)
Total gains (losses) (realized/unrealized):
Net investment income	0	0
Purchases	0	0
Sales	0	0
Issuances	0	0
Settlements	0	0
Foreign currency translation	0	0
Other	587	0
Transfers into Level 3	0	0
Transfers out of Level 3	0	0
Fair Value, end of period	(612)	(1,854)
Notes Issued by Consolidated VIEs | Realized investment gains (losses), net
Total gains (losses) (realized/unrealized):
Included in earnings	(3)	(15)
Unrealized gains (losses) for assets/liabilities still held:
Included in earnings	(3)	(15)
Notes Issued by Consolidated VIEs | Other income
Total gains (losses) (realized/unrealized):
Included in earnings	0	0
Unrealized gains (losses) for assets/liabilities still held:
Included in earnings	0	0
Notes Issued by Consolidated VIEs | Interest credited to policyholders’ account balances
Total gains (losses) (realized/unrealized):
Included in earnings	0	0
Unrealized gains (losses) for assets/liabilities still held:
Included in earnings	0	0
Available-for-sale | Fixed maturities | U.S. government
Fair Value, Assets And Liabilities Measured On Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair Value, beginning of period	52	0
Total gains (losses) (realized/unrealized):
Included in other comprehensive income (loss)	0	0
Net investment income	0	0
Purchases	7	0
Sales	0	0
Issuances	0	0
Settlements	0	0
Foreign currency translation	0	0
Other	0	10
Transfers into Level 3	0	0
Transfers out of Level 3	0	0
Fair Value, end of period	59	10
Available-for-sale | Fixed maturities | U.S. government | Realized investment gains (losses), net
Total gains (losses) (realized/unrealized):
Included in earnings	0	0
Unrealized gains (losses) for assets/liabilities still held:
Included in earnings	0	0
Available-for-sale | Fixed maturities | U.S. states
Fair Value, Assets And Liabilities Measured On Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair Value, beginning of period	5	5
Total gains (losses) (realized/unrealized):
Included in other comprehensive income (loss)	0	0
Net investment income	0	0
Purchases	0	0
Sales	0	0
Issuances	0	0
Settlements	0	0
Foreign currency translation	0	0
Other	0	0
Transfers into Level 3	0	0
Transfers out of Level 3	0	0
Fair Value, end of period	5	5
Available-for-sale | Fixed maturities | U.S. states | Realized investment gains (losses), net
Total gains (losses) (realized/unrealized):
Included in earnings	0	0
Unrealized gains (losses) for assets/liabilities still held:
Included in earnings	0	0
Available-for-sale | Fixed maturities | Foreign government
Fair Value, Assets And Liabilities Measured On Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair Value, beginning of period	148	124
Total gains (losses) (realized/unrealized):
Included in other comprehensive income (loss)	0	0
Net investment income	0	0
Purchases	0	1
Sales	0	0
Issuances	0	0
Settlements	0	0
Foreign currency translation	1	5
Other	0	0
Transfers into Level 3	5	7
Transfers out of Level 3	(26)	(1)
Fair Value, end of period	128	136
Available-for-sale | Fixed maturities | Foreign government | Realized investment gains (losses), net
Total gains (losses) (realized/unrealized):
Included in earnings	0	0
Unrealized gains (losses) for assets/liabilities still held:
Included in earnings	0	0
Available-for-sale | Fixed maturities | Corporate securities
Fair Value, Assets And Liabilities Measured On Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair Value, beginning of period	2,776	2,173
Total gains (losses) (realized/unrealized):
Included in other comprehensive income (loss)	16	13
Net investment income	2	9
Purchases	118	34
Sales	(1)	(141)
Issuances	0	0
Settlements	(169)	(59)
Foreign currency translation	12	9
Other	0	(10)
Transfers into Level 3	60	98
Transfers out of Level 3	(72)	(59)
Fair Value, end of period	2,735	2,111
Available-for-sale | Fixed maturities | Corporate securities | Realized investment gains (losses), net
Total gains (losses) (realized/unrealized):
Included in earnings	(7)	44
Unrealized gains (losses) for assets/liabilities still held:
Included in earnings	(9)	(8)
Available-for-sale | Fixed maturities | Structured securities
Fair Value, Assets And Liabilities Measured On Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair Value, beginning of period	6,715	4,555
Total gains (losses) (realized/unrealized):
Included in other comprehensive income (loss)	(30)	0
Net investment income	2	3
Purchases	1,548	782
Sales	(66)	(10)
Issuances	0	0
Settlements	(649)	(420)
Foreign currency translation	26	12
Other	4	(1)
Transfers into Level 3	1,071	1,647
Transfers out of Level 3	(1,735)	(659)
Fair Value, end of period	6,899	5,911
Available-for-sale | Fixed maturities | Structured securities | Realized investment gains (losses), net
Total gains (losses) (realized/unrealized):
Included in earnings	13	2
Unrealized gains (losses) for assets/liabilities still held:
Included in earnings	0	0
Trading | Fixed maturities
Fair Value, Assets And Liabilities Measured On Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair Value, beginning of period	156	76
Total gains (losses) (realized/unrealized):
Included in other comprehensive income (loss)	0	0
Net investment income	0	0
Purchases	40	15
Sales	(4)	(1)
Issuances	0	0
Settlements	0	(10)
Foreign currency translation	5	1
Other	0	1
Transfers into Level 3	11	26
Transfers out of Level 3	(2)	(1)
Fair Value, end of period	204	106
Trading | Fixed maturities | Realized investment gains (losses), net
Total gains (losses) (realized/unrealized):
Included in earnings	0	0
Unrealized gains (losses) for assets/liabilities still held:
Included in earnings	0	0
Trading | Fixed maturities | Other income
Total gains (losses) (realized/unrealized):
Included in earnings	(2)	(1)
Unrealized gains (losses) for assets/liabilities still held:
Included in earnings	$ 4	$ (1)

Fair Value of Assets and Liab69

Fair Value of Assets and Liabilities (Derivative Assets and Liabilities Measured at Fair Value on a Recurring Basis) (Details) - USD ($) $ in Millions	Mar. 31, 2018	Dec. 31, 2017
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total derivative assets	$ 1,219	$ 1,205
Netting	(8,382)	(9,600)
Total derivative liabilities	1,249	643
Netting	(5,673)	(5,312)
Interest Rate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total derivative assets	6,860	8,424
Total derivative liabilities	4,025	3,804
Currency
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total derivative assets	480	165
Total derivative liabilities	253	262
Credit
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total derivative assets	13	21
Total derivative liabilities	5	5
Currency/Interest Rate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total derivative assets	1,003	1,588
Total derivative liabilities	1,837	1,149
Equity
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total derivative assets	1,245	607
Total derivative liabilities	802	735
Commodity
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total derivative assets	0	0
Total derivative liabilities	0	0
Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total derivative assets	4	27
Total derivative liabilities	0	3
Level 1 | Interest Rate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total derivative assets	4	25
Total derivative liabilities	0	1
Level 1 | Currency
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total derivative assets	0	0
Total derivative liabilities	0	0
Level 1 | Credit
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total derivative assets	0	0
Total derivative liabilities	0	0
Level 1 | Currency/Interest Rate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total derivative assets	0	0
Total derivative liabilities	0	0
Level 1 | Equity
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total derivative assets	0	2
Total derivative liabilities	0	2
Level 1 | Commodity
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total derivative assets	0	0
Total derivative liabilities	0	0
Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total derivative assets	9,584	10,768
Total derivative liabilities	6,921	5,949
Level 2 | Interest Rate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total derivative assets	6,849	8,399
Total derivative liabilities	4,024	3,800
Level 2 | Currency
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total derivative assets	480	165
Total derivative liabilities	253	262
Level 2 | Credit
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total derivative assets	13	21
Total derivative liabilities	5	5
Level 2 | Currency/Interest Rate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total derivative assets	1,003	1,588
Total derivative liabilities	1,837	1,149
Level 2 | Equity
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total derivative assets	1,239	595
Total derivative liabilities	802	733
Level 2 | Commodity
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total derivative assets	0	0
Total derivative liabilities	0	0
Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total derivative assets	13	10
Total derivative liabilities	1	3
Level 3 | Interest Rate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total derivative assets	7	0
Total derivative liabilities	1	3
Level 3 | Currency
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total derivative assets	0	0
Total derivative liabilities	0	0
Level 3 | Credit
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total derivative assets	0	0
Total derivative liabilities	0	0
Level 3 | Currency/Interest Rate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total derivative assets	0	0
Total derivative liabilities	0	0
Level 3 | Equity
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total derivative assets	6	10
Total derivative liabilities	0	0
Level 3 | Commodity
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total derivative assets	0	0
Total derivative liabilities	0	0
Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Netting	$ (2,709)	$ (4,288)

Fair Value of Assets and Liab70

Fair Value of Assets and Liabilities (Changes in Level 3 Derivative Assets and Liabilities) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Derivative Assets- Equity
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Fair Value, beginning of period	$ 10	$ 0
Total gains (losses) (realized/unrealized):
Purchases	0	0
Sales	0	0
Issuances	0	0
Settlements	0	0
Foreign currency translation	0
Other	(5)	0
Transfers into Level 3	1	0
Transfers out of Level 3	0	0
Fair Value, end of period	6	0
Derivative Assets- Interest Rate
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Fair Value, beginning of period	(3)	4
Total gains (losses) (realized/unrealized):
Purchases	0	0
Sales	0	0
Issuances	0	0
Settlements	0	0
Foreign currency translation	0
Other	0	0
Transfers into Level 3	0	0
Transfers out of Level 3	0	0
Fair Value, end of period	6	3
Realized investment gains (losses), net | Derivative Assets- Equity
Total gains (losses) (realized/unrealized):
Included in earnings	0	0
Unrealized gains (losses) for assets still held:
Included in earnings	1	0
Realized investment gains (losses), net | Derivative Assets- Interest Rate
Total gains (losses) (realized/unrealized):
Included in earnings	9	(1)
Unrealized gains (losses) for assets still held:
Included in earnings	8	(1)
Other income | Derivative Assets- Equity
Total gains (losses) (realized/unrealized):
Included in earnings	0	0
Unrealized gains (losses) for assets still held:
Included in earnings	0	0
Other income | Derivative Assets- Interest Rate
Total gains (losses) (realized/unrealized):
Included in earnings	0	0
Unrealized gains (losses) for assets still held:
Included in earnings	$ 0	$ 0

Fair Value of Assets and Liab71

Fair Value of Assets and Liabilities (Nonrecurring Fair Value Measurements) (Details) - Fair Value, Measurements, Nonrecurring - Level 3 - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Commercial mortgage loans
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Realized investment gains (losses) net	$ 0	$ 0
Carrying value after measurement as of period end	63		$ 64
Mortgage servicing rights
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Realized investment gains (losses) net	2	2
Carrying value after measurement as of period end	62		60
Cost method investments
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Realized investment gains (losses) net	0	$ (10)
Carrying value after measurement as of period end	$ 0		$ 150

Fair Value of Assets and Liab72

Fair Value of Assets and Liabilities (Changes in Fair Values Recorded in Earnings for FVO Assets-Liabilities) (Details) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Fair Value, Option, Quantitative Disclosures [Line Items]
Commercial mortgage and other loans	[1]	$ 58,098		$ 56,045
Other invested assets	[1],[2]	14,044		13,373
Commercial mortgage and other loans
Fair Value, Option, Quantitative Disclosures [Line Items]
Interest income		2	$ 2
Fair value option loans in non-accrual status		0
Fair value option loans in more than 90 days past due and still accruing		0
Other invested assets
Fair Value, Option, Quantitative Disclosures [Line Items]
Changes in fair value		0	54
Notes Issued by Consolidated VIEs
Fair Value, Option, Quantitative Disclosures [Line Items]
Changes in fair value		3	15
Interest expense		9	$ 22
Fair value option
Fair Value, Option, Quantitative Disclosures [Line Items]
Commercial mortgage and other loans		298		593
Other invested assets		0		1,945
Notes issued by consolidated VIEs		612		1,196
Fair value option, aggregate contractual principal
Fair Value, Option, Quantitative Disclosures [Line Items]
Commercial mortgage and other loans		292		582
Notes issued by consolidated VIEs		$ 632		$ 1,233
[1]	See Note 4 for details of balances associated with variable interest entities.
[2]	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 Liab73

Fair Value of Assets and Liabilities (Financial Instruments where Carrying Amounts and Fair Values May Differ) (Details) - USD ($) $ in Millions		Mar. 31, 2018		Dec. 31, 2017		Mar. 31, 2017
Assets:
Fixed maturities, held-to-maturity	[1]	$ 2,120		$ 2,049
Assets supporting experience-rated contractholder liabilities	[1],[2]	21,637		22,097
Commercial mortgage and other loans	[1]	58,098		56,045
Policy loans		12,036		11,891
Other invested assets	[1],[2]	14,044		13,373
Cash and cash equivalents		15,676	[1]	14,490	[1]	$ 13,308
Accrued investment income	[1]	3,169		3,325
Liabilities:
Securities sold under agreements to repurchase		8,633		8,400
Cash collateral for loaned securities		4,312		4,354
Short-term debt		1,383		1,380
Long-term debt		18,143		17,172
Fair Value
Assets:
Fixed maturities, held-to-maturity		2,511		2,430
Assets supporting experience-rated contractholder liabilities		128		109
Commercial mortgage and other loans		58,333		56,748
Policy loans		12,036		11,891
Other invested assets		57
Short-term investments		1,459		1,011
Cash and cash equivalents		9,081		6,192
Accrued investment income		3,169		3,325
Other assets		3,244		3,115
Total assets		90,018		84,821
Liabilities:
Policyholders’ account balances—investment contracts		99,831		100,186
Securities sold under agreements to repurchase		8,633		8,400
Cash collateral for loaned securities		4,312		4,354
Short-term debt		1,385		1,384
Long-term debt		19,937		19,760
Notes issued by consolidated VIEs		342		322
Other liabilities		6,920		6,717
Separate account liabilities—investment contracts		99,313		101,826
Total liabilities		240,673		242,949
Carrying Amount
Assets:
Fixed maturities, held-to-maturity		2,120		2,049
Assets supporting experience-rated contractholder liabilities		128		109
Commercial mortgage and other loans		57,800		55,452
Policy loans		12,036		11,891
Other invested assets		57
Short-term investments		1,459		1,011
Cash and cash equivalents		9,081		6,192
Accrued investment income		3,169		3,325
Other assets		3,244		3,115
Total assets		89,094		83,144
Liabilities:
Policyholders’ account balances—investment contracts		100,486		99,948
Securities sold under agreements to repurchase		8,633		8,400
Cash collateral for loaned securities		4,312		4,354
Short-term debt		1,383		1,380
Long-term debt		18,143		17,172
Notes issued by consolidated VIEs		342		322
Other liabilities		6,920		6,717
Separate account liabilities—investment contracts		99,313		101,826
Total liabilities		239,532		240,119
Level 1 | Fair Value
Assets:
Fixed maturities, held-to-maturity		0		0
Assets supporting experience-rated contractholder liabilities		98		58
Commercial mortgage and other loans		0		0
Policy loans		1		1
Other invested assets		0
Short-term investments		1,433		989
Cash and cash equivalents		7,742		5,997
Accrued investment income		0		0
Other assets		81		45
Total assets		9,355		7,090
Liabilities:
Policyholders’ account balances—investment contracts		0		0
Securities sold under agreements to repurchase		0		0
Cash collateral for loaned securities		0		0
Short-term debt		0		0
Long-term debt		1,294		1,296
Notes issued by consolidated VIEs		0		0
Other liabilities		0		0
Separate account liabilities—investment contracts		0		0
Total liabilities		1,294		1,296
Level 2 | Fair Value
Assets:
Fixed maturities, held-to-maturity		1,551		1,484
Assets supporting experience-rated contractholder liabilities		30		51
Commercial mortgage and other loans		134		129
Policy loans		0		0
Other invested assets		57
Short-term investments		26		22
Cash and cash equivalents		1,339		195
Accrued investment income		3,169		3,325
Other assets		2,498		2,385
Total assets		8,804		7,591
Liabilities:
Policyholders’ account balances—investment contracts		32,936		33,045
Securities sold under agreements to repurchase		8,633		8,400
Cash collateral for loaned securities		4,312		4,354
Short-term debt		1,353		1,384
Long-term debt		16,667		16,369
Notes issued by consolidated VIEs		0		0
Other liabilities		6,226		6,002
Separate account liabilities—investment contracts		69,950		71,336
Total liabilities		140,077		140,890
Level 3 | Fair Value
Assets:
Fixed maturities, held-to-maturity		960		946
Assets supporting experience-rated contractholder liabilities		0		0
Commercial mortgage and other loans		58,199		56,619
Policy loans		12,035		11,890
Other invested assets		0
Short-term investments		0		0
Cash and cash equivalents		0		0
Accrued investment income		0		0
Other assets		665		685
Total assets		71,859		70,140
Liabilities:
Policyholders’ account balances—investment contracts		66,895		67,141
Securities sold under agreements to repurchase		0		0
Cash collateral for loaned securities		0		0
Short-term debt		32		0
Long-term debt		1,976		2,095
Notes issued by consolidated VIEs		342		322
Other liabilities		694		715
Separate account liabilities—investment contracts		29,363		30,490
Total liabilities		99,302		100,763
Prudential Netting Agreement | Fair Value
Assets:
Fixed maturities, held-to-maturity		4,812		4,913
Liabilities:
Long-term debt		7,658		7,577
Prudential Netting Agreement | Carrying Amount
Assets:
Fixed maturities, held-to-maturity		4,753		4,627
Liabilities:
Long-term debt		$ 7,599		7,287
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				1,795
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				$ 1,571
[1]	See Note 4 for details of balances associated with variable interest entities.
[2]	Prior period amounts have been reclassified to conform to current period presentation. See “Adoption of ASU 2016-01” in Note 2 for details.

Closed Block (Narrative) (Detai

Closed Block (Narrative) (Details) - USD ($) $ in Millions	Mar. 31, 2018	Dec. 31, 2017
Policyholders’ dividend obligation	$ 4,433	$ 5,446
Excess of actual cumulative earnings over expected cumulative earnings
Policyholders’ dividend obligation	2,621	1,790
Accumulated net unrealized investment gains
Policyholders’ dividend obligation	$ 1,812	$ 3,656

Closed Block (Closed Block Liab

Closed Block (Closed Block Liabilities and Assets Designated to Closed Block; Maximum Future Earnings to be Recognized) (Details) - USD ($) $ in Millions	Mar. 31, 2018	Dec. 31, 2017
Closed Block liabilities
Future policy benefits	$ 48,631	$ 48,870
Policyholders’ dividends payable	860	829
Policyholders’ dividend obligation	4,433	5,446
Policyholders’ account balances	5,120	5,146
Other Closed Block liabilities	5,165	5,070
Total Closed Block liabilities	64,209	65,361
Closed Block assets
Fixed maturities, available-for-sale, at fair value	39,858	41,043
Fixed maturities, trading, at fair value	205	339	[1]
Equity securities, at fair value	2,309	2,340	[1]
Commercial mortgage and other loans	9,027	9,017
Policy loans	4,495	4,543
Other invested assets	3,407	3,159	[1]
Short-term investments	413	632
Total investments	59,714	61,073
Cash and cash equivalents	1,020	789
Accrued investment income	491	474
Other Closed Block assets	222	249
Total Closed Block assets	61,447	62,585
Excess of reported Closed Block liabilities over Closed Block assets	2,762	2,776
Portion of above representing accumulated other comprehensive income:
Net unrealized investment gains (losses)	1,777	3,627
Allocated to policyholder dividend obligation	(1,812)	(3,656)
Future earnings to be recognized from Closed Block assets and Closed Block liabilities	$ 2,727	$ 2,747
[1]	Prior period amounts have been reclassified to conform to current period presentation. See Note 2 for details.

Closed Block (Information Regar

Closed Block (Information Regarding Policyholder Dividend Obligation) (Details) $ in Millions	3 Months Ended
	Mar. 31, 2018USD ($)
Movement in Closed Block Dividend Obligation [Roll Forward]
Balance, beginning	$ 5,446
Impact from earnings allocable to policyholder dividend obligation	(139)
Change in net unrealized investment gains (losses) allocated to policyholder dividend obligation	(1,031)
Balance, ending	4,433
ASU 2016-01
Movement in Closed Block Dividend Obligation [Roll Forward]
Cumulative-effect adjustment from the adoption of ASU 2016-01	$ 157	[1]
[1]	See Note 2 for details.

Closed Block (Closed Block Reve

Closed Block (Closed Block Revenues and Benefits and Expenses) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Revenues
Premiums	$ 551	$ 605
Net investment income	597	650
Realized investment gains (losses), net	(2)	273
Other income (loss)	21	34
Total Closed Block revenues	1,167	1,562
Benefits and Expenses
Policyholders’ benefits	727	789
Interest credited to policyholders’ account balances	33	33
Dividends to policyholders	308	593
General and administrative expenses	93	97
Total Closed Block benefits and expenses	1,161	1,512
Closed Block revenues, net of Closed Block benefits and expenses, before income taxes	6	50
Income tax expense (benefit)	(9)	37
Closed Block revenues, net of Closed Block benefits and expenses and income taxes	$ 15	$ 13

Income Taxes Income Taxes (Deta

Income Taxes Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Mar. 31, 2018	Dec. 31, 2017
Change in Accounting Estimate [Line Items]
Deferred tax revaluation from 35% to 21%	$ (1,588)	$ (1,592)
Adoption of modified territorial system	(1,809)	(1,785)
Deemed repatriation	497	497
Total provision for income tax expense (benefit)	(2,900)	$ (2,880)
U.S. Tax Cut and Jobs Act of 2017
Change in Accounting Estimate [Line Items]
Deferred tax revaluation from 35% to 21%	4
Adoption of modified territorial system	(24)
Deemed repatriation	0
Total provision for income tax expense (benefit)	$ (20)

Income Taxes (Narrative) (Detai

Income Taxes (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended		12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Income Tax Disclosure [Abstract]
Total income tax expense (benefit)	$ 352	$ 395
Effective Income Tax Rate, Percent	20.80%	22.70%
Federal Statutory Income Tax Rate, Percent	21.00%	35.00%
Total provision for income tax expense (benefit)	$ (2,900)		$ (2,880)

Short-Term and Long-Term Debt80

Short-Term and Long-Term Debt (Short-Term Debt) (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Mar. 31, 2018	Dec. 31, 2017
Short-term Debt [Line Items]
Short-term debt	$ 1,383	$ 1,380
Weighted average interest rate on outstanding short-term debt	1.47%	0.99%
Commercial paper
Short-term Debt [Line Items]
Short-term debt	$ 521	$ 550
Weighted average maturity of outstanding commercial paper, in days	20 days	22 days
Long-term debt
Short-term Debt [Line Items]
Short-term debt	$ 862	$ 830
Borrowings due overnight | Commercial paper
Short-term Debt [Line Items]
Short-term debt	85	277
Daily average outstanding | Commercial paper
Short-term Debt [Line Items]
Short-term debt	1,179	1,110
Prudential Financial
Short-term Debt [Line Items]
Short-term debt	855	880
Prudential Financial | Commercial paper
Short-term Debt [Line Items]
Short-term debt	25	50
Prudential Funding, LLC | Commercial paper
Short-term Debt [Line Items]
Short-term debt	496	$ 500
Real estate investment property | Long-term debt
Short-term Debt [Line Items]
Short-term debt	$ 32

Short-Term and Long-Term Debt81

Short-Term and Long-Term Debt (Narrative) (Details) - USD ($)		3 Months Ended
		Mar. 31, 2018	Dec. 31, 2017
Debt Instrument [Line Items]
Debt, Current		$ 1,383,000,000	$ 1,380,000,000
Amounts drawn on credit facilities		0
Other invested assets	[1],[2]	14,044,000,000	13,373,000,000
Assets Under Set-Off Arrangements | Regulation XXX [Member]
Debt Instrument [Line Items]
Debt instrument authorized for captive reinsurance		1,600,000,000
Surplus notes captive financing facility		100,000,000
Long-term debt
Debt Instrument [Line Items]
Debt, Current		862,000,000	830,000,000
Medium-term Notes | Senior notes
Debt Instrument [Line Items]
Debt instrument authorized for captive reinsurance		20,000,000,000
Long-term Debt		8,700,000,000
Increase (decrease) of debt		1,000,000,000
Real estate investment property | Long-term debt
Debt Instrument [Line Items]
Debt, Current		32,000,000
Real estate investment property | Mortgage | Senior notes
Debt Instrument [Line Items]
Increase (decrease) of debt		3,000,000
Increase due to new borrowings		23,000,000
Foreign exchange fluctuations of debt		7,000,000
Prepayments of Debt		27,000,000
Real estate investment property | ERROR in label resolution.
Debt Instrument [Line Items]
Other invested assets		802,000,000	$ 799,000,000
Maturing in 2028 [Member] | Medium-term Notes | Senior notes
Debt Instrument [Line Items]
Debt Instrument, Face Amount		$ 600,000,000
Debt Instrument, Interest Rate, Stated Percentage		3.878%
Maturing 2048 [Member] | Medium-term Notes | Senior notes
Debt Instrument [Line Items]
Debt Instrument, Face Amount		$ 400,000,000
Debt Instrument, Interest Rate, Stated Percentage		4.418%
[1]	Prior period amounts have been reclassified to conform to current period presentation. See “Adoption of ASU 2016-01” in Note 2 for details.
[2]	See Note 4 for details of balances associated with variable interest entities.

Short-Term and Long-Term Debt82

Short-Term and Long-Term Debt (Long-Term Debt) (Details) - USD ($) $ in Millions	Mar. 31, 2018	Dec. 31, 2017
Debt Instrument [Line Items]
Long-term debt	$ 18,143	$ 17,172
Surplus notes | Fixed-rate notes:
Debt Instrument [Line Items]
Long-term debt	841	840
Surplus notes | Floating-rate notes:
Debt Instrument [Line Items]
Long-term debt	0	0
Surplus notes subject to set-off arrangements | Fixed-rate notes:
Debt Instrument [Line Items]
Long-term debt	5,499	5,187
Surplus notes subject to set-off arrangements | Floating-rate notes:
Debt Instrument [Line Items]
Long-term debt	2,100	2,100
Senior notes | Fixed-rate notes:
Debt Instrument [Line Items]
Long-term debt	9,876	8,882
Senior notes | Floating-rate notes:
Debt Instrument [Line Items]
Long-term debt	29	29
Mortgage | Fixed-rate notes:
Debt Instrument [Line Items]
Long-term debt	244	226
Mortgage | Floating-rate notes:
Debt Instrument [Line Items]
Long-term debt	526	573
Junior subordinated notes(4)
Debt Instrument [Line Items]
Long-term debt	6,627	6,622
Subtotal
Debt Instrument [Line Items]
Long-term debt	25,742	24,459
Less: assets under set-off arrangements
Debt Instrument [Line Items]
Long-term debt	7,599	7,287
Debt denominated in foreign currency | Mortgage | Fixed-rate notes:
Debt Instrument [Line Items]
Long-term debt	109	107
Debt denominated in foreign currency | Mortgage | Floating-rate notes:
Debt Instrument [Line Items]
Long-term debt	222	245
Prudential Financial
Debt Instrument [Line Items]
Long-term debt	16,301	$ 15,304
Prudential Financial | Junior subordinated notes(4)
Debt Instrument [Line Items]
Long-term debt	6,568
Subsidiaries [Member] | Junior subordinated notes(4)
Debt Instrument [Line Items]
Long-term debt	$ 59

Employee Benefit Plans (Narrati

Employee Benefit Plans (Narrative) (Details) - Other Postretirement Benefits	3 Months Ended
	Mar. 31, 2018year
Minimum
Defined Benefit Plan Disclosure [Line Items]
Deferred Compensation Arrangement with Individual, Requisite Age	50
Deferred Compensation Arrangement with Individual, Requisite Service Period	10 years
Maximum
Defined Benefit Plan Disclosure [Line Items]
Deferred Compensation Arrangement with Individual, Requisite Age	55
Deferred Compensation Arrangement with Individual, Requisite Service Period	20 years

Employee Benefit Plans (Compone

Employee Benefit Plans (Components of Net Periodic Benefit Cost Included in General and Administrative Expenses) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 79	$ 71
Interest cost	112	119
Expected return on plan assets	(204)	(195)
Amortization of prior service cost	(1)	(1)
Amortization of actuarial (gain) loss, net	53	48
Settlements	0	0
Special termination benefits	0	3
Net periodic (benefit) cost	39	45
Other Postretirement Benefits
Defined Benefit Plan Disclosure [Line Items]
Service cost	6	5
Interest cost	18	20
Expected return on plan assets	(27)	(25)
Amortization of prior service cost	0	0
Amortization of actuarial (gain) loss, net	4	9
Settlements	0	0
Special termination benefits	0	0
Net periodic (benefit) cost	$ 1	$ 9

Equity (Common Stock Changes in

Equity (Common Stock Changes in Number of Shares Issued, Held in Treasury and Outstanding) (Details)	3 Months Ended
	Mar. 31, 2018shares
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance, beginning	660,111,339
Balance, ending	660,111,339
Issued
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance, beginning	660,100,000
Common Stock issued	0
Common Stock acquired	0
Stock-based compensation programs	0
Balance, ending	660,100,000
Held In Treasury
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance, beginning	237,500,000
Common Stock issued	0
Common Stock acquired	3,300,000
Stock-based compensation programs	(1,700,000)
Balance, ending	239,100,000
Outstanding
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance, beginning	422,600,000
Common Stock issued	0
Common Stock acquired	(3,300,000)
Stock-based compensation programs	1,700,000
Balance, ending	421,000,000

Equity (Narrative) (Details)

Equity (Narrative) (Details) - USD ($) shares in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Class of Stock [Line Items]
Cost of Treasury Stock Acquired	$ 363,000,000	$ 291,000,000
Under December 2017 Board Of Directors Authorization [Member] [Member]
Class of Stock [Line Items]
Amount of Stock Repurchases Authorized by the Board of Directors			$ 1,500,000,000
Under December 2017 Board Of Directors Authorization [Member] [Member] | Common Stock
Class of Stock [Line Items]
Number of Treasury Stock Shares Acquired	3.3
Cost of Treasury Stock Acquired	$ 375,000,000

Equity (Accumulated Other Compr

Equity (Accumulated Other Comprehensive Income (Loss)) (Details) - USD ($) $ in Millions	3 Months Ended		12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	$ 17,074
Income tax benefit (expense)	844	$ 216
Ending balance	14,761		$ 17,074
Foreign Currency Translation Adjustment
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	(269)	(973)	(973)
Change in OCI before reclassifications	649	570
Amounts reclassified from AOCI	0	1
Income tax benefit (expense)	8	(62)
Ending balance	157	(464)	(269)
Net Unrealized Investment Gains (Losses)
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	19,968	18,171	18,171
Change in OCI before reclassifications	(4,640)	(319)
Amounts reclassified from AOCI	(26)	(490)
Income tax benefit (expense)	845	293
Ending balance	17,582	17,655	19,968
Pension and Postretirement Unrecognized Net Periodic Benefit (Cost)
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	(2,625)	(2,577)	(2,577)
Change in OCI before reclassifications	(2)	(12)
Amounts reclassified from AOCI	56	56
Income tax benefit (expense)	(9)	(15)
Ending balance	(2,978)	(2,548)	(2,625)
Accumulated Other Comprehensive Income (Loss)
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	17,074	14,621	14,621
Change in OCI before reclassifications	(3,993)	239
Amounts reclassified from AOCI	30	(433)
Income tax benefit (expense)	844	216
Ending balance	14,761	14,643	17,074
Cash flow hedges | Net Unrealized Investment Gains (Losses)
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	(39)	1,316	1,316
Ending balance	(622)	$ 1,118	$ (39)
ASU 2016-01 | Foreign Currency Translation Adjustment
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Cumulative effect of adoption	0
ASU 2016-01 | Net Unrealized Investment Gains (Losses)
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Cumulative effect of adoption	(847)
ASU 2016-01 | Pension and Postretirement Unrecognized Net Periodic Benefit (Cost)
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Cumulative effect of adoption	0
ASU 2016-01 | Accumulated Other Comprehensive Income (Loss)
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Cumulative effect of adoption	(847)
ASU 2018-02
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Ending balance	1,653
ASU 2018-02 | Foreign Currency Translation Adjustment
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Cumulative effect of adoption	(231)
ASU 2018-02 | Net Unrealized Investment Gains (Losses)
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Cumulative effect of adoption	2,282
ASU 2018-02 | Pension and Postretirement Unrecognized Net Periodic Benefit (Cost)
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Cumulative effect of adoption	(398)
ASU 2018-02 | Accumulated Other Comprehensive Income (Loss)
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Cumulative effect of adoption	$ 1,653

Equity (Reclassifications out o

Equity (Reclassifications out of Accumulated Other Comprehensive Income (Loss)) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]
Realized investment gains (losses), net	$ 425	$ 427
Other income	(507)	217
Total foreign currency translation adjustment
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]
Amounts reclassified from AOCI	0	1
Net Unrealized Investment Gains (Losses)
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]
Amounts reclassified from AOCI	(26)	(490)
Total amortization of defined benefit pension items
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]
Amounts reclassified from AOCI	56	56
Accumulated Other Comprehensive Income (Loss)
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]
Amounts reclassified from AOCI	30	(433)
Amounts reclassified from AOCI
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]
Realized investment gains (losses), net	0	(1)
Other income	0	0
Amortization of defined benefit pension items:
Prior service cost	1	1
Actuarial gain (loss)	(57)	(57)
Amounts reclassified from AOCI | Total foreign currency translation adjustment
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]
Amounts reclassified from AOCI	0	(1)
Amounts reclassified from AOCI | Net Unrealized Investment Gains (Losses)
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]
Amounts reclassified from AOCI	26	490
Amounts reclassified from AOCI | Total amortization of defined benefit pension items
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]
Amounts reclassified from AOCI	(56)	(56)
Amounts reclassified from AOCI | Accumulated Other Comprehensive Income (Loss)
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]
Amounts reclassified from AOCI	(30)	433
Amounts reclassified from AOCI | 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)	78	430
Amounts reclassified from AOCI | Interest Rate | Cash flow hedges
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]
Net unrealized investment gains (losses)	0	(1)
Amounts reclassified from AOCI | Cash flow hedges—Currency | Cash flow hedges
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]
Net unrealized investment gains (losses)	(3)	0
Amounts reclassified from AOCI | Cash flow hedges—Currency/Interest rate | Cash flow hedges
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]
Net unrealized investment gains (losses)	$ (49)	$ 61

Equity (OTTI Net Unrealized Inv

Equity (OTTI Net Unrealized Investment Gains and Losses in AOCI) (Details) $ in Millions	3 Months Ended
	Mar. 31, 2018USD ($)
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	$ 17,074
Ending balance	14,761
Accumulated Other Comprehensive Income (Loss) Related to Net Unrealized Investment Gains (Losses)
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	19,968
Ending balance	17,582
OTTI | Net Unrealized Gains (Losses) on Investments
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	286
Net investment gains (losses) on investments arising during the period	(10)
Reclassification adjustment for (gains) losses included in net income	(41)
Reclassification adjustment for OTTI losses excluded from net income	(1)
Ending balance	234
OTTI | DAC, DSI, VOBA and Reinsurance Recoverables
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	(2)
Impact of net unrealized investment (gains) losses on DAC, DSI, VOBA and reinsurance recoverables	0
Ending balance	(2)
OTTI | Future Policy Benefits, Policyholders’ Account Balances and Reinsurance Payables
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	3
Impact of net unrealized investment (gains) losses on future policy benefits and policyholders’ account balances and reinsurance payables	0
Ending balance	3
OTTI | Policyholders’ Dividends
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	(46)
Impact of net unrealized investment (gains) losses on policyholders’ dividends	17
Ending balance	(29)
OTTI | Deferred Income Tax (Liability) Benefit
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	(94)
Net investment gains (losses) on investments arising during the period	6
Reclassification adjustment for (gains) losses included in net income	24
Reclassification adjustment for OTTI losses excluded from net income	1
Impact of net unrealized investment (gains) losses on DAC, DSI, VOBA and reinsurance recoverables	0
Impact of net unrealized investment (gains) losses on future policy benefits and policyholders’ account balances and reinsurance payables	0
Impact of net unrealized investment (gains) losses on policyholders’ dividends	(8)
Ending balance	(71)
OTTI | Accumulated Other Comprehensive Income (Loss) Related to Net Unrealized Investment Gains (Losses)
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	147
Net investment gains (losses) on investments arising during the period	(4)
Reclassification adjustment for (gains) losses included in net income	(17)
Reclassification adjustment for OTTI losses excluded from net income	0
Impact of net unrealized investment (gains) losses on DAC, DSI, VOBA and reinsurance recoverables	0
Impact of net unrealized investment (gains) losses on future policy benefits and policyholders’ account balances and reinsurance payables	0
Impact of net unrealized investment (gains) losses on policyholders’ dividends	9
Ending balance	$ 135

Equity (All Other Net Unrealize

Equity (All Other Net Unrealized Investment Gains and Losses in AOCI) (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Mar. 31, 2018	Dec. 31, 2017
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	$ 17,074
Ending balance	14,761	$ 17,074
ASU 2018-02
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Ending balance	1,653
Accumulated Other Comprehensive Income (Loss) Related to Net Unrealized Investment Gains (Losses)
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	19,968	18,171
Ending balance	17,582	19,968
Accumulated Other Comprehensive Income (Loss) Related to Net Unrealized Investment Gains (Losses) | ASU 2016-01
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Cumulative effect of adoption	(847)
Accumulated Other Comprehensive Income (Loss) Related to Net Unrealized Investment Gains (Losses) | ASU 2018-02
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Cumulative effect of adoption	2,282
All Other | Net Unrealized Gains (Losses) on Investments
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	36,112
Net investment gains (losses) on investments arising during the period	(6,466)
Reclassification adjustment for (gains) losses included in net income	15
Reclassification adjustment for OTTI losses excluded from net income	1
Ending balance	27,620	36,112
All Other | Net Unrealized Gains (Losses) on Investments | ASU 2016-01
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Cumulative effect of adoption	(2,042)
All Other | DAC, DSI, VOBA and Reinsurance Recoverables
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	(1,580)
Impact of net unrealized investment (gains) losses on DAC, DSI, VOBA and reinsurance recoverables	544
Ending balance	(1,036)	(1,580)
All Other | Future Policy Benefits, Policyholders’ Account Balances and Reinsurance Payables
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	(1,243)
Impact of net unrealized investment (gains) losses on future policy benefits and policyholders’ account balances and reinsurance payables	257
Ending balance	(986)	(1,243)
All Other | Policyholders’ Dividends
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	(3,631)
Impact of net unrealized investment (gains) losses on policyholders’ dividends	1,018
Ending balance	(1,800)	(3,631)
All Other | Policyholders’ Dividends | ASU 2016-01
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Cumulative effect of adoption	813
All Other | Deferred Income Tax (Liability) Benefit
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	(9,837)
Net investment gains (losses) on investments arising during the period	2,026
Reclassification adjustment for (gains) losses included in net income	(8)
Reclassification adjustment for OTTI losses excluded from net income	(1)
Impact of net unrealized investment (gains) losses on DAC, DSI, VOBA and reinsurance recoverables	(203)
Impact of net unrealized investment (gains) losses on future policy benefits and policyholders’ account balances and reinsurance payables	(137)
Impact of net unrealized investment (gains) losses on policyholders’ dividends	(685)
Ending balance	(6,351)	(9,837)
All Other | Deferred Income Tax (Liability) Benefit | ASU 2016-01
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Cumulative effect of adoption	212
All Other | Deferred Income Tax (Liability) Benefit | ASU 2018-02
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Cumulative effect of adoption	2,282
All Other | Accumulated Other Comprehensive Income (Loss) Related to Net Unrealized Investment Gains (Losses)
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	19,821
Net investment gains (losses) on investments arising during the period	(4,440)
Reclassification adjustment for (gains) losses included in net income	7
Reclassification adjustment for OTTI losses excluded from net income	0
Impact of net unrealized investment (gains) losses on DAC, DSI, VOBA and reinsurance recoverables	341
Impact of net unrealized investment (gains) losses on future policy benefits and policyholders’ account balances and reinsurance payables	120
Impact of net unrealized investment (gains) losses on policyholders’ dividends	333
Ending balance	17,447	$ 19,821
All Other | Accumulated Other Comprehensive Income (Loss) Related to Net Unrealized Investment Gains (Losses) | ASU 2016-01
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Cumulative effect of adoption	(1,017)
All Other | Accumulated Other Comprehensive Income (Loss) Related to Net Unrealized Investment Gains (Losses) | ASU 2018-02
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Cumulative effect of adoption	$ 2,282

Earnings Per Share (Reconciliat

Earnings Per Share (Reconciliation of the Numerators and Denominators of the Basic and Diluted Per Share) (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Basic earnings per share
Net income (loss)	$ 1,364	$ 1,372
Less: Income (loss) attributable to noncontrolling interests	1	3
Less: Dividends and undistributed earnings allocated to participating unvested share-based payment awards	16	17
Net income (loss) attributable to Prudential Financial available to holders of Common Stock, Basic Income	$ 1,347	$ 1,352
Net income (loss) attributable to Prudential Financial available to holders of Common Stock, Basic Weighted Average Shares	422	429.9
Net income (loss) attributable to Prudential Financial available to holders of Common Stock, Basic Per Share Amount	$ 3.19	$ 3.14
Effect of dilutive securities and compensation programs
Add: Dividends and undistributed earnings allocated to participating unvested share-based payment awards—Basic	$ 16	$ 17
Less: Dividends and undistributed earnings allocated to participating unvested share-based payment awards—Diluted	$ 16	$ 16
Stock options, Weighted Average Shares	1.9	2.5
Deferred and long-term compensation programs, Weighted Average Shares	1.1	0.9
Exchangeable Surplus Notes	$ 5	$ 4
Exchangeable Surplus Notes, Weighted Average Shares	5.9	5.8
Diluted earnings per share
Net income (loss) attributable to Prudential Financial available to holders of Common Stock, Diluted Income	$ 1,352	$ 1,357
Net income (loss) attributable to Prudential Financial available to holders of Common Stock, Diluted Weighted Average Shares	430.9	439.1
Net income (loss) attributable to Prudential Financial available to holders of Common Stock, Diluted Per Share Amount	$ 3.14	$ 3.09

Earnings Per Share (Narrative)

Earnings Per Share (Narrative) (Details) $ / shares in Units, shares in Thousands	1 Months Ended	3 Months Ended
	Sep. 30, 2009USD ($)$ / sharesshares	Mar. 31, 2018USD ($)$ / sharesshares	Mar. 31, 2017shares
Debt Instrument [Line Items]
Exchangeable surplus notes (in shares)		5,900	5,800
Undistributed earnings allocated to participating unvested share-based payment awards, weighted outstanding shares		4,900	5,300
Long-term debt | Exhangeable Surplus Notes
Debt Instrument [Line Items]
Debt instrument, face amount | $	$ 500,000,000
Surplus notes principal amount, for each | $	$ 1,000	$ 1,000
Interest rate	5.36%
Debt instrument, convertible, conversion ratio	10.1235	11.7643
Exchangeable surplus notes (in shares)	5,100	5,880
Exchange price of common stock, per share | $ / shares	$ 98.78	$ 85

Earnings Per Share (Antidilutiv

Earnings Per Share (Antidilutive Securities Excluded From the Computation of Diluted Earnings Per Share) (Details) - $ / shares shares in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings, Shares	0.3	0.7
Antidilutive stock options based on application of the treasury stock method
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings, Shares	0.3	0.2
Antidilutive securities excluded from computation of earnings, Exercise Price Per Share	$ 107.65	$ 110.45
Antidilutive stock options due to net loss available to holders of Common Stock
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings, Shares	0	0
Antidilutive shares based on application of the treasury stock method
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings, Shares	0	0.5
Antidilutive shares due to net loss available to holders of Common Stock
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings, Shares	0	0

Segment Information (Narrative)

Segment Information (Narrative) (Details) $ in Millions	3 Months Ended
	Mar. 31, 2018USD ($)divisionsegment	Mar. 31, 2017USD ($)
Segment Reporting Information [Line Items]
Income (loss) before income taxes and equity in earnings of operating joint ventures | $	$ 1,693	$ 1,742
Number of operating divisions | division	5
Number of reportable segments | segment	7

Segment Information (Reconcilia

Segment Information (Reconciliation of Adjusted Operating Income and Net Income (Loss)) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Consolidated income (loss) before income taxes and equity in earnings of operating joint ventures	$ 1,693	$ 1,742
Operating Segments
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Consolidated income (loss) before income taxes and equity in earnings of operating joint ventures	1,721	1,660
Operating Segments | Total U.S. Individual Solutions division
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Consolidated income (loss) before income taxes and equity in earnings of operating joint ventures	555	586	[1]
Operating Segments | Total U.S. Individual Solutions division | Individual Annuities
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Consolidated income (loss) before income taxes and equity in earnings of operating joint ventures	519	468
Operating Segments | Total U.S. Individual Solutions division | Individual Life
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Consolidated income (loss) before income taxes and equity in earnings of operating joint ventures	36	118
Operating Segments | Total U.S. Workplace Solutions division
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Consolidated income (loss) before income taxes and equity in earnings of operating joint ventures	372	431	[1]
Operating Segments | Total U.S. Workplace Solutions division | Retirement
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Consolidated income (loss) before income taxes and equity in earnings of operating joint ventures	317	397
Operating Segments | Total U.S. Workplace Solutions division | Group Insurance
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Consolidated income (loss) before income taxes and equity in earnings of operating joint ventures	55	34
Operating Segments | Total Investment Management division
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Consolidated income (loss) before income taxes and equity in earnings of operating joint ventures	232	196	[1]
Operating Segments | Total Investment Management division | Investment Management
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Consolidated income (loss) before income taxes and equity in earnings of operating joint ventures	232	196
Operating Segments | Total International Insurance division
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Consolidated income (loss) before income taxes and equity in earnings of operating joint ventures	856	799
Operating Segments | Total International Insurance division | International Insurance
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Consolidated income (loss) before income taxes and equity in earnings of operating joint ventures	856	799
Operating Segments | Total Corporate and Other
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Consolidated income (loss) before income taxes and equity in earnings of operating joint ventures	(294)	(352)
Operating Segments | Total Corporate and Other | Corporate and Other operations
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Consolidated income (loss) before income taxes and equity in earnings of operating joint ventures	(294)	(352)
Segment Reconciling Items | Realized investment gains (losses), net, and related adjustments
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Consolidated income (loss) before income taxes and equity in earnings of operating joint ventures	87	(66)
Segment Reconciling Items | Charges related to realized investment gains (losses), net
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Consolidated income (loss) before income taxes and equity in earnings of operating joint ventures	(23)	104
Segment Reconciling Items | Investment gains (losses) on assets supporting experience-rated contractholder liabilities, net
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Consolidated income (loss) before income taxes and equity in earnings of operating joint ventures	(403)	44
Segment Reconciling Items | Change in experience-rated contractholder liabilities due to asset value changes
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Consolidated income (loss) before income taxes and equity in earnings of operating joint ventures	418	(12)
Segment Reconciling Items | Equity in earnings of operating joint ventures and earnings attributable to noncontrolling interests
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Consolidated income (loss) before income taxes and equity in earnings of operating joint ventures	(26)	(28)
Segment Reconciling Items | Closed Block division
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Consolidated income (loss) before income taxes and equity in earnings of operating joint ventures	(9)	34
Segment Reconciling Items | Other divested businesses
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Consolidated income (loss) before income taxes and equity in earnings of operating joint ventures	$ (72)	$ 6
[1]	Prior period divisional subtotals are presented on a basis consistent with the Company’s new organizational structure. Individual segment results and consolidated totals remain unchanged. See Note 22 to the Consolidated Financial Statements included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2017.

Segment Information (Reconcil96

Segment Information (Reconciliation of Select Financial Information) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017		Dec. 31, 2017
Segment Reporting Information [Line Items]
Revenues	$ 13,757	$ 13,670
Total Assets	829,677			$ 832,136
Operating Segments
Segment Reporting Information [Line Items]
Revenues	12,875	12,007
Total Assets	767,706			769,002
Operating Segments | Total U.S. Individual Solutions division
Segment Reporting Information [Line Items]
Revenues	2,677	2,660	[1]
Total Assets	262,851			267,651
Operating Segments | Total U.S. Individual Solutions division | Individual Annuities
Segment Reporting Information [Line Items]
Revenues	1,252	1,215
Total Assets	178,458			183,666
Operating Segments | Total U.S. Individual Solutions division | Individual Life
Segment Reporting Information [Line Items]
Revenues	1,425	1,445
Total Assets	84,393			83,985
Operating Segments | Total U.S. Workplace Solutions division
Segment Reporting Information [Line Items]
Revenues	3,505	3,320	[1]
Total Assets	221,547			225,204
Operating Segments | Total U.S. Workplace Solutions division | Retirement
Segment Reporting Information [Line Items]
Revenues	2,089	1,937
Total Assets	179,483			183,629
Operating Segments | Total U.S. Workplace Solutions division | Group Insurance
Segment Reporting Information [Line Items]
Revenues	1,416	1,383
Total Assets	42,064			41,575
Operating Segments | Total Investment Management division
Segment Reporting Information [Line Items]
Revenues	826	756	[1]
Total Assets	47,811			49,944
Operating Segments | Total Investment Management division | Investment Management
Segment Reporting Information [Line Items]
Revenues	826	756
Total Assets	47,811			49,944
Operating Segments | Total International Insurance division
Segment Reporting Information [Line Items]
Revenues	6,040	5,409
Total Assets	222,768			211,647
Operating Segments | Total International Insurance division | International Insurance
Segment Reporting Information [Line Items]
Revenues	6,040	5,409
Total Assets	222,768			211,647
Operating Segments | Total Corporate and Other
Segment Reporting Information [Line Items]
Revenues	(173)	(138)
Total Assets	12,729			14,556
Operating Segments | Total Corporate and Other | Corporate and Other operations
Segment Reporting Information [Line Items]
Revenues	(173)	(138)
Total Assets	12,729			14,556
Segment Reconciling Items | Realized investment gains (losses), net, and related adjustments
Segment Reporting Information [Line Items]
Revenues	87	(66)
Segment Reconciling Items | Charges related to realized investment gains (losses), net
Segment Reporting Information [Line Items]
Revenues	(71)	(22)
Segment Reconciling Items | Investment gains (losses) on assets supporting experience-rated contractholder liabilities, net
Segment Reporting Information [Line Items]
Revenues	(403)	44
Segment Reconciling Items | Equity in earnings of operating joint ventures and earnings attributable to noncontrolling interests
Segment Reporting Information [Line Items]
Revenues	(26)	(31)
Segment Reconciling Items | Closed Block division
Segment Reporting Information [Line Items]
Revenues	1,163	1,557
Total Assets	61,971			$ 63,134
Segment Reconciling Items | Other divested businesses
Segment Reporting Information [Line Items]
Revenues	132	181
Intersegment Eliminations | Total Investment Management division | Investment Management
Segment Reporting Information [Line Items]
Revenues	$ 184	$ 172
[1]	Prior period divisional subtotals are presented on a basis consistent with the Company’s new organizational structure. Individual segment results and consolidated totals remain unchanged. See Note 22 to the Consolidated Financial Statements included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2017.

Commitments and Contingent Li97

Commitments and Contingent Liabilities (Commitments and Guarantees) (Details) - USD ($) $ in Millions	Mar. 31, 2018	Dec. 31, 2017
Commitments and Contingent Liabilities [Line Items]
Fair value of collateral supporting these assets	$ 756	$ 625
Commitments | Commercial Mortgage Loans
Commitments and Contingent Liabilities [Line Items]
Total outstanding mortgage loan commitments	2,093	2,772
Portion of commitment where prearrangement to sell to investor exists	477	435
Expected to be funded from the GA and other operations outside the SA
Commitments and Contingent Liabilities [Line Items]
Commitments to Purchase Investment (excluding Commercial Mortgage Loans)	6,359	6,319
Expected to be funded from separate accounts
Commitments and Contingent Liabilities [Line Items]
Commitments to Purchase Investment (excluding Commercial Mortgage Loans)	92	141
Indemnifications | Securities Lending Transactions
Commitments and Contingent Liabilities [Line Items]
Indemnification provided to certain securities lending clients	5,142	4,619
Fair value of related collateral associated with above indemnifications	5,233	4,722
Accrued liability associated with guarantee	0	0
Indemnifications | Serviced Mortgage Loans
Commitments and Contingent Liabilities [Line Items]
Maximum exposure under indemnification agreements for mortgage loans serviced by the Company	1,644	1,609
First-loss exposure portion of above	492	483
Accrued liability associated with guarantee	15	14
Guarantees of Asset Values
Commitments and Contingent Liabilities [Line Items]
Guaranteed value of third-parties’ assets	76,159	77,290
Fair value of collateral supporting these assets	75,402	77,651
Asset (liability) associated with guarantee, carried at fair value	6	(1)
Other Guarantees
Commitments and Contingent Liabilities [Line Items]
Other guarantees where amount can be determined	31	31
Accrued liability associated with guarantee	$ 0	$ 0

Commitments and Contingent Li98

Commitments and Contingent Liabilities (Narrative Excluding Litigation) (Details) $ in Millions	3 Months Ended
	Mar. 31, 2018USD ($)	Mar. 31, 2017USD ($)	Dec. 31, 2017USD ($)
Indemnifications | Securities Lending Transactions
Commitments and Contingent Liabilities [Line Items]
Fair value of loaned securities, minimum collateral (equal to or greater than)	102.00%
Indemnifications | Mortgage
Commitments and Contingent Liabilities [Line Items]
Losses related to indemnifications that were settled	$ 0	$ 0
Mortgages subject to loss-sharing arrangements	$ 13,078		$ 12,892
Weighted-average debt service coverage ratio of mortgages subject to loss-sharing arrangements	1.85		1.82
Weighted-average loan-to-value ratio of mortgages subject to loss-sharing arrangements	60.00%		59.00%
Indemnifications | Minimum | Mortgage
Commitments and Contingent Liabilities [Line Items]
Percentage share of losses incurred on certain loans serviced	2.00%
Indemnifications | Maximum | Mortgage
Commitments and Contingent Liabilities [Line Items]
Percentage share of losses incurred on certain loans serviced	20.00%
Yield Maintenance Guarantee
Commitments and Contingent Liabilities [Line Items]
Guarantees related to certain investments the Company sold	$ 31		$ 31

Commitments and Contingent Li99

Commitments and Contingent Liabilities (Litigation Narrative) (Details) $ in Millions	Mar. 31, 2018USD ($)
Loss Contingencies [Line Items]
Estimate of possible losses in excess of accruals (less than) for litigation and regulatory matters	$ 250