MetLife (MET) 10-Q 4 Aug 17 2017 Q2 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - USD ($) $ in Billions	6 Months Ended
	Jun. 30, 2017	Jul. 31, 2017	Jun. 30, 2016
Document and Entity Information [Abstract]
Entity Registrant Name	METLIFE INC
Entity Central Index Key	1,099,219
Document Type	10-Q
Document Period End Date	Jun. 30, 2017
Amendment Flag	false
Document Fiscal Year Focus	2,017
Document Fiscal Period Focus	Q2
Current Fiscal Year End Date	--12-31
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Filer Category	Large Accelerated Filer
Entity Public Float			$ 43.8
Entity Common Stock, Shares Outstanding		1,062,868,893

Consolidated Balance Sheets (Un

Consolidated Balance Sheets (Unaudited) - USD ($) $ in Millions	Jun. 30, 2017	Dec. 31, 2016
Investments:
Fixed maturity securities available-for-sale, at estimated fair value (amortized cost: $338,030 and $330,354, respectively; includes $0 and $3,422, respectively, relating to variable interest entities)	$ 364,084	$ 350,889
Equity securities available-for-sale, at estimated fair value (cost: $2,983 and $2,744, respectively)	3,415	3,194
Fair value option securities, at estimated fair value (includes $7 and $8, respectively, relating to variable interest entities)	14,762	13,923
Mortgage loans (net of valuation allowances of $356 and $344, respectively; includes $123 and $136, respectively, at estimated fair value, relating to variable interest entities; includes $615 and $566, respectively, under the fair value option)	77,572	74,545
Policy loans	11,072	11,028
Real estate and real estate joint ventures (includes $44 and $59, respectively, of real estate held-for-sale)	9,484	9,041
Other limited partnership interests (includes $13 and $14, respectively, relating to variable interest entities)	6,874	6,778
Short-term Investments	7,177	7,810
Other invested assets, principally at estimated fair value (includes $31 and $31, respectively, relating to variable interest entities)	19,596	23,185
Total investments	514,036	500,393
Cash and cash equivalents, principally at estimated fair value (includes $1 and $1, respectively, relating to variable interest entities)	17,319	17,877
Accrued investment income (includes $1 and $1, respectively, relating to variable interest entities)	3,970	3,988
Premiums, reinsurance and other receivables (includes $6 and $2, respectively, relating to variable interest entities)	26,487	26,081
Deferred policy acquisition costs and value of business acquired	25,408	24,798
Current income tax recoverable	66	20
Goodwill	9,385	9,220
Other assets (includes $3 and $3, respectively, relating to variable interest entities)	8,073	7,767
Separate account assets	320,455	308,620
Total assets	925,199	898,764
Liabilities
Future policy benefits	205,836	199,971
Policyholder account balances	216,257	210,235
Other policy-related balances	14,708	14,386
Policyholder dividends payable	722	708
Policyholder dividend obligation	2,237	1,931
Payables for collateral under securities loaned and other transactions	33,725	33,264
Short-term debt	235	242
Long-term debt (includes $28 and $35, respectively, at estimated fair value, relating to variable interest entities)	19,508	16,502
Collateral financing arrangements	1,235	4,071
Junior subordinated debt securities	3,169	3,169
Deferred income tax liability	10,383	9,367
Other liabilities	27,060	28,818
Separate account liabilities	320,455	308,620
Total liabilities	855,530	831,284
Contingencies, Commitments and Guarantees (Note 14)
MetLife, Inc.’s stockholders’ equity:
Preferred stock, par value $0.01 per share; $2,100 aggregate liquidation preference	0	0
Common stock, par value $0.01 per share; 3,000,000,000 shares authorized; 1,166,331,934 and 1,164,029,985 shares issued, respectively; 1,063,465,987 and 1,095,519,005 shares outstanding, respectively	12	12
Additional paid-in capital	31,021	30,944
Retained earnings	35,270	34,480
Treasury stock, at cost; 102,865,947 and 68,510,980 shares, respectively	(5,284)	(3,474)
Accumulated other comprehensive income (loss)	8,436	5,347
Total MetLife, Inc.’s stockholders’ equity	69,455	67,309
Noncontrolling interests	214	171
Total equity	69,669	67,480
Total liabilities and equity	$ 925,199	$ 898,764

Consolidated Balance Sheets (U3

Consolidated Balance Sheets (Unaudited) (Parenthetical) - USD ($) $ in Millions	Jun. 30, 2017	Dec. 31, 2016
Assets
Amortized cost of fixed maturity securities available-for-sale	$ 338,030	$ 330,354
Fixed maturity securities relating to variable interest entities	364,084	350,889
Cost of equity securities available-for-sale	2,983	2,744
Fair value option and trading securities relating to variable interest entities	14,762	13,923
Mortgage loans valuation allowances	356	344
Mortgage Loans on Real Estate	77,572	74,545
Real estate held-for-sale	44	59
Other limited partnership interests relating to variable interest entities	6,874	6,778
Short-term Investments	7,177	7,810
Other invested assets relating to variable interest entities	19,596	23,185
Cash and cash equivalents relating to variable interest entities	17,319	17,877
Accrued investment income relating to variable interest entities	3,970	3,988
Premiums, reinsurance and other receivables relating to variable interest entities	26,487	26,081
Other assets relating to variable interest entities	8,073	7,767
Liabilities
Long-term debt, at estimated fair value, relating to variable interest entities	$ 19,508	$ 16,502
MetLife, Inc.’s stockholders’ equity:
Preferred stock, par value	$ 0.01	$ 0.01
Preferred stock, aggregate liquidation preference	2,100	2,100
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	3,000,000,000	3,000,000,000
Common stock, shares issued	1,166,331,934	1,164,029,985
Common stock, shares outstanding	1,063,465,987	1,095,519,005
Treasury stock, shares	102,865,947	68,510,980
Residential mortgage loans — FVO
Assets
Mortgage Loans on Real Estate	$ 615	$ 566
Variable interest entities
Assets
Fixed maturity securities relating to variable interest entities	0	3,422
Fair value option and trading securities relating to variable interest entities	7	8
Mortgage Loans on Real Estate	123	136
Other limited partnership interests relating to variable interest entities	13	14
Short-term Investments	0	0
Other invested assets relating to variable interest entities	31	31
Cash and cash equivalents relating to variable interest entities	1	1
Accrued investment income relating to variable interest entities	1	1
Premiums, reinsurance and other receivables relating to variable interest entities	6	2
Other assets relating to variable interest entities	3	3
Liabilities
Long-term debt, at estimated fair value, relating to variable interest entities	$ 28	$ 35

Consolidated Statements of Oper

Consolidated Statements of Operations and Comprehensive Income (Unaudited) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Revenues
Premiums	$ 9,935	$ 9,417	$ 19,250	$ 19,110
Universal life and investment-type product policy fees	2,302	2,286	4,604	4,630
Net investment income	4,959	4,887	10,155	9,446
Other revenues	382	487	756	974
Net investment gains (losses):
Other-than-temporary impairments on fixed maturity securities	(3)	(8)	(3)	(86)
Other-than-temporary impairments on fixed maturity securities transferred to other comprehensive income (loss)	0	(6)	0	(6)
Other net investment gains (losses)	107	280	115	373
Total net investment gains (losses)	104	266	112	281
Net derivative gains (losses)	(437)	(2,099)	(1,363)	(764)
Total revenues	17,245	15,244	33,514	33,677
Expenses
Policyholder benefits and claims	10,302	10,274	20,161	19,952
Interest credited to policyholder account balances	1,562	1,500	3,274	2,826
Policyholder dividends	320	324	637	639
Other expenses	4,059	3,246	7,623	7,438
Total expenses	16,243	15,344	31,695	30,855
Income (loss) before provision for income tax	1,002	(100)	1,819	2,822
Provision for income tax expense (benefit)	115	(214)	103	505
Net income (loss)	887	114	1,716	2,317
Less: Net income (loss) attributable to noncontrolling interests	3	4	6	6
Net income (loss) attributable to MetLife, Inc.	884	110	1,710	2,311
Less: Preferred stock dividends	46	46	52	52
Net income (loss) available to MetLife, Inc.’s common shareholders	838	64	1,658	2,259
Comprehensive income (loss)	2,926	3,884	4,805	12,272
Less: Comprehensive income (loss) attributable to noncontrolling interests, net of income tax	2	7	6	100
Comprehensive income (loss) attributable to MetLife, Inc.	$ 2,924	$ 3,877	$ 4,799	$ 12,172
Net income (loss) available to MetLife, Inc.’s common shareholders per common share:
Basic	$ 0.78	$ 0.06	$ 1.53	$ 2.05
Diluted	0.77	0.06	1.52	2.04
Cash dividends declared per common share	$ 0.400	$ 0.400	$ 0.800	$ 0.775

Consolidated Statements of Equi

Consolidated Statements of Equity (Unaudited) - USD ($) $ in Millions	Total	Preferred Stock	Common Stock	Additional Paid-in Capital	Retained Earnings	Treasury Stock at Cost	Accumulated Other Comprehensive Income (Loss)	Total MetLife, Inc.’s Stockholders’ Equity	Noncontrolling Interests
Beginning Balance at Dec. 31, 2015	$ 68,419	$ 0	$ 12	$ 30,749	$ 35,519	$ (3,102)	$ 4,771	$ 67,949	$ 470
Treasury stock acquired in connection with share repurchases	(70)					(70)		(70)
Stock-based compensation	34			34				34
Dividends on preferred stock	(52)				(52)			(52)
Dividends on common stock	(854)				(854)			(854)
Change in equity of noncontrolling interests	(376)							0	(376)
Net income (loss)	2,317				2,311			2,311	6
Other comprehensive income (loss), net of income tax	9,955						9,861	9,861	94
Ending Balance at Jun. 30, 2016	79,373	0	12	30,783	36,924	(3,172)	14,632	79,179	194
Beginning Balance at Dec. 31, 2016	67,480	0	12	30,944	34,480	(3,474)	5,347	67,309	171
Treasury stock acquired in connection with share repurchases	(1,810)					(1,810)		(1,810)
Stock-based compensation	77			77				77
Dividends on preferred stock	(52)				(52)			(52)
Dividends on common stock	(868)				(868)			(868)
Change in equity of noncontrolling interests	37							0	37
Net income (loss)	1,716				1,710			1,710	6
Other comprehensive income (loss), net of income tax	3,089						3,089	3,089	0
Ending Balance at Jun. 30, 2017	$ 69,669	$ 0	$ 12	$ 31,021	$ 35,270	$ (5,284)	$ 8,436	$ 69,455	$ 214

Consolidated Statements of Cash

Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Statement of Cash Flows [Abstract]
Net cash provided by (used in) operating activities	$ 5,499	$ 6,204
Cash flows from investing activities
Sales, maturities and repayments of fixed maturity securities	47,120	67,505
Sales, maturities and repayments of equity securities	452	893
Sales, maturities and repayments of mortgage loans	4,354	6,751
Sales, maturities and repayments of real estate and real estate joint ventures	490	171
Sales, maturities and repayments of other limited partnership interests	689	450
Purchases of fixed maturity securities	(49,995)	(74,049)
Purchases of equity securities	(616)	(776)
Purchases of mortgage loans	(7,126)	(9,088)
Purchases of real estate and real estate joint ventures	(602)	(674)
Purchases of other limited partnership interests	(682)	(401)
Cash received in connection with freestanding derivatives	3,945	2,478
Cash paid in connection with freestanding derivatives	(5,698)	(2,709)
Purchases of investments in operating joint ventures	0	(39)
Net change in policy loans	6	107
Net change in short-term investments	914	(415)
Net change in other invested assets	(206)	133
Other, net	(194)	(245)
Net cash provided by (used in) investing activities	(7,149)	(9,908)
Cash flows from financing activities
Policyholder account balances: Deposits	44,854	41,348
Policyholder account balances: Withdrawals	(42,387)	(39,893)
Net change in payables for collateral under securities loaned and other transactions	1,205	8,594
Long-term debt issued	2,989	0
Long-term debt repaid	(9)	(1,264)
Collateral financing arrangements repaid	(2,836)	(26)
Financing element on certain derivative instruments and other derivative related transactions, net	(94)	(194)
Treasury stock acquired in connection with share repurchases	(1,810)	(70)
Dividends on preferred stock	(52)	(52)
Dividends on common stock	(868)	(854)
Other, net	(186)	78
Net cash provided by (used in) financing activities	806	7,667
Effect of change in foreign currency exchange rates on cash and cash equivalents balances	286	352
Change in cash and cash equivalents	(558)	4,315
Cash and cash equivalents, beginning of period	17,877	12,752
Cash and cash equivalents, end of period	17,319	17,067
Supplemental disclosures of cash flow information:
Net cash paid for Interest	574	623
Net cash paid (received) for Income tax	505	393
Non-cash transactions:
Reduction of fixed maturity securities in connection with a reinsurance transaction	0	224
Deconsolidation of operating joint venture:
Reduction of fixed maturity securities	0	917
Reduction of noncontrolling interests	$ 0	$ 373

Business, Basis of Presentation

Business, Basis of Presentation and Summary of Significant Accounting Policies	6 Months Ended
	Jun. 30, 2017
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Business, Basis of Presentation and Summary of Significant Accounting Policies	1. Business, Basis of Presentation and Summary of Significant Accounting Policies Business “MetLife” and the “Company” refer to MetLife, Inc., a Delaware corporation incorporated in 1999, its subsidiaries and affiliates. MetLife is a global provider of life insurance, annuities, employee benefits and asset management. As previously announced, in the third quarter of 2016, MetLife reorganized its businesses into six segments: U.S.; Asia; Latin America; Europe, the Middle East and Africa (“EMEA”); MetLife Holdings; and Brighthouse Financial, as a result of the Company’s plan to separate a substantial portion of its former Retail segment, as well as certain portions of its former Corporate Benefit Funding segment and Corporate & Other (the “Separation”). See Note 2 for further information on the reorganization, which was applied retrospectively. See Note 3 for further information on the Separation. Basis of Presentation The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America (“GAAP”) requires management to adopt accounting policies and make estimates and assumptions that affect amounts reported on the interim condensed consolidated financial statements. In applying these policies and estimates, management makes subjective and complex judgments that frequently require assumptions about matters that are inherently uncertain. Many of these policies, estimates and related judgments are common in the insurance and financial services industries; others are specific to the Company’s business and operations. Actual results could differ from these estimates. Consolidation The accompanying interim condensed consolidated financial statements include the accounts of MetLife, Inc. and its subsidiaries, as well as partnerships and joint ventures in which the Company has control, and variable interest entities (“VIEs”) for which the Company is the primary beneficiary. Intercompany accounts and transactions have been eliminated. The Company uses the equity method of accounting for equity securities when it has significant influence or at least 20% interest and for real estate joint ventures and other limited partnership interests (“investees”) when it has more than a minor ownership interest or more than a minor influence over the investee’s operations. The Company generally recognizes its share of the investee’s earnings on a three-month lag in instances where the investee’s financial information is not sufficiently timely or when the investee’s reporting period differs from the Company’s reporting period. The Company uses the cost method of accounting for investments in which it has virtually no influence over the investee’s operations. Reclassifications Certain amounts in the prior year periods’ interim condensed consolidated financial statements and related footnotes thereto have been reclassified to conform to the 2017 presentation as discussed throughout the Notes to the Interim Condensed Consolidated Financial Statements. The accompanying interim condensed consolidated financial statements are unaudited and reflect all adjustments (including normal recurring adjustments) necessary to present fairly the financial position, results of operations and cash flows for the interim periods presented in conformity with GAAP. Interim results are not necessarily indicative of full year performance. The December 31, 2016 consolidated balance sheet data was derived from audited consolidated financial statements included in MetLife, Inc.’s Annual Report on Form 10‑K for the year ended December 31, 2016 (the “2016 Annual Report”), which include all disclosures required by GAAP. Therefore, these interim condensed consolidated financial statements should be read in conjunction with the consolidated financial statements of the Company included in the 2016 Annual Report. Adoption of New Accounting Pronouncements Effective January 1, 2017, the Company early adopted guidance relating to business combinations. The new guidance clarifies the definition of a business and requires that an entity apply certain criteria in order to determine when a set of assets and activities qualifies as a business. The adoption of this standard will result in fewer acquisitions qualifying as businesses and, accordingly, acquisition costs for those acquisitions that do not qualify as businesses will be capitalized rather than expensed. The adoption did not have an impact on the Company’s consolidated financial statements. Effective January 1, 2017, the Company retrospectively adopted guidance relating to consolidation. The new guidance does not change the characteristics of a primary beneficiary under current GAAP. It changes how a reporting entity evaluates whether it is the primary beneficiary of a VIE by changing how a reporting entity that is a single decisionmaker of a VIE handles indirect interests in the entity held through related parties that are under common control with the reporting entity. The adoption of this new guidance did not have a material impact on the Company’s consolidated financial statements. Effective January 1, 2017, the Company adopted guidance related to stock-based compensation. The new guidance changes several aspects of the accounting for share-based payment and award transactions, including (i) income tax consequences when awards vest or are settled; (ii) classification as either equity or liability due to statutory tax withholding requirements; and (iii) classification on the statement of cash flows. In addition, the new guidance provides an accounting policy election to account for forfeitures as they occur, rather than to account for them based on an estimate of expected forfeitures. The Company has elected to continue to account for forfeitures based on an estimate of expected forfeitures. In addition, the Company elected to apply the change in presentation in the statement of cash flows related to excess tax benefits prospectively and prior periods have not been adjusted. The change in presentation for cash paid to a taxing authority when directly withholding equivalent shares has been classified as a financing activity in the statement of cash flows. The change was applied retrospectively and thus the directly withheld share equivalent amount was reclassified from an operating activity to a financing activity in the consolidated statements of cash flows. The adoption of this new guidance did not have a material impact on the Company’s consolidated financial statements. Other Effective January 3, 2017, the Chicago Mercantile Exchange (“CME”) amended its rulebook, resulting in the characterization of variation margin transfers as settlement payments, as opposed to adjustments to collateral. These amendments impacted the accounting treatment of the Company’s centrally cleared derivatives for which the CME serves as the central clearing party. As of the effective date, the application of the amended rulebook reduced gross derivative assets by $1.8 billion , gross derivative liabilities by $2.0 billion , accrued investment income by $101 million , accrued investment expense recorded within other liabilities by $14 million , collateral receivables recorded within premiums, reinsurance and other receivables of $991 million , and collateral payables recorded within payables for collateral under securities loaned and other transactions of $816 million . Future Adoption of New Accounting Pronouncements In May 2017, the Financial Accounting Standards Board (“FASB”) issued new guidance on share-based payment awards (Accounting Standards Update (“ASU”) 2017-09, Compensation - Stock Compensation (Topic 718) - Scope of Modification Accounting). The new guidance is effective for fiscal years beginning after December 15, 2017 and interim periods within those fiscal years. The new guidance should be applied prospectively to an award modified on or after the adoption date. Early adoption is permitted. The ASU includes guidance on determining which changes to the terms and conditions of share-based payment awards require an entity to apply modification accounting under Topic 718. The Company is currently evaluating the impact of this guidance on its consolidated financial statements. In March 2017, the FASB issued new guidance on purchased callable debt securities (ASU 2017-08, Receivables -Nonrefundable Fees and Other Costs (Subtopic 310-20), Premium Amortization on Purchased Callable Debt Securities ). The new guidance is effective for fiscal years beginning after December 15, 2018 and interim periods within those fiscal years and should be applied on a modified retrospective basis through a cumulative-effect adjustment directly to retained earnings. Early adoption is permitted. The ASU shortens the amortization period for certain callable debt securities held at a premium and requires the premium to be amortized to the earliest call date. However, the new guidance does not require an accounting change for securities held at a discount whose discount continues to be amortized to maturity. The Company is currently evaluating the impact of this guidance on its consolidated financial statements. In March 2017, the FASB issued new guidance on the presentation of net periodic pension cost and net periodic postretirement benefit cost (ASU 2017-07, Compensation - Retirement Benefits (Topic 715): Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost) . The new guidance is effective for annual periods beginning after December 15, 2017 and interim periods within those annual periods. Early adoption is permitted as of the beginning of an annual period for which financial statements (interim or annual) have not been issued or made available for issuance. The guidance requires that an employer that offers to its employees defined benefit pension or other postretirement benefit plans report the service cost component in the same line item or items as other compensation costs arising from services rendered by the pertinent employees during the period. The other components of net benefit cost are required to be presented in the income statement separately from the service cost component and outside a subtotal of income from operations, if one is presented. The guidance should be applied retrospectively for the presentation of the service cost component in the income statement and allows a practical expedient for the estimation basis for applying the retrospective presentation requirements. The Company is currently evaluating the impact of this guidance on its consolidated financial statements. In February 2017, the FASB issued new guidance on derecognition of nonfinancial assets (ASU 2017-05, Other Income-Gains and Losses from the Derecognition of Nonfinancial Assets (Subtopic 610-20): Clarifying the Scope of Asset Derecognition Guidance and Accounting for Partial Sales of Nonfinancial Assets ). The new guidance is effective for fiscal years beginning after December 15, 2017 and interim periods within those fiscal years. Early adoption is permitted for interim or annual reporting periods beginning after December 15, 2016. The guidance may be applied retrospectively for all periods presented or retrospectively with a cumulative-effect adjustment at the date of adoption. The new guidance clarifies the scope and accounting of a financial asset that meets the definition of an “in-substance nonfinancial asset” and defines the term, “in-substance nonfinancial asset.” The ASU also adds guidance for partial sales of nonfinancial assets. The Company is currently evaluating the impact of this guidance on its consolidated financial statements. In January 2017, the FASB issued new guidance on goodwill impairment (ASU 2017-04, Intangibles - Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment ). The new guidance is effective for fiscal years beginning after December 15, 2019 and interim periods within those fiscal years, and should be applied on a prospective basis. Early adoption is permitted for interim or annual goodwill impairment tests performed on testing dates after January 1, 2017. The new guidance simplifies the current two-step goodwill impairment test by eliminating Step 2 of the test. The new guidance requires a one-step impairment test in which an entity compares the fair value of a reporting unit with its carrying amount and recognizes an impairment charge for the amount by which the carrying amount exceeds the reporting unit’s fair value, if any. The Company is currently evaluating the impact of this guidance on its consolidated financial statements. In November 2016, the FASB issued new guidance on restricted cash (ASU 2016-18, Statement of Cash Flows (Topic 230): a consensus of the FASB Emerging Issues Task Force ). The new guidance is effective for fiscal years beginning after December 15, 2017 and interim periods within those fiscal years, and should be applied on a retrospective basis. Early adoption is permitted. The new guidance requires that a statement of cash flows explain the change during the period in the total of cash, cash equivalents, and amounts generally described as restricted cash or restricted cash equivalents. As a result, the new guidance requires that amounts generally described as restricted cash and restricted cash equivalents should be included with cash and cash equivalents when reconciling the beginning-of-period and end-of-period total amounts shown on the statement of cash flows. The new guidance does not provide a definition of restricted cash or restricted cash equivalents. The Company is currently evaluating the impact of this guidance on its consolidated financial statements. In October 2016, the FASB issued new guidance on tax accounting for intra-entity transfers of assets (ASU 2016 - 16, Income Taxes (Topic 740): Intra-Entity Transfers of Assets Other Than Inventory ). The new guidance is effective for fiscal years beginning after December 15, 2017 and interim periods within those fiscal years, and should be applied on a modified retrospective basis. Early adoption is permitted in the first interim or annual reporting period. Current guidance prohibits the recognition of current and deferred income taxes for an intra-entity asset transfer until the asset has been sold to an outside party. The new guidance requires an entity to recognize the income tax consequences of an intra-entity transfer of an asset other than inventory when the transfer occurs. Also, the guidance eliminates the exception for an intra-entity transfer of an asset other than inventory. The Company is currently evaluating the impact of this guidance on its consolidated financial statements. In August 2016, the FASB issued new guidance on cash flow statement presentation (ASU 2016-15, Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments ). The new guidance is effective for fiscal years beginning after December 15, 2017 and interim periods within those fiscal years, and should be applied retrospectively to all periods presented. Early adoption is permitted in any interim or annual period. This ASU addresses diversity in how certain cash receipts and cash payments are presented and classified in the statement of cash flows. The Company is currently evaluating the impact of this guidance on its consolidated financial statements. In June 2016, the FASB issued new guidance on measurement of credit losses on financial instruments (ASU 2016-13, Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments ) . The new guidance is effective for fiscal years beginning after December 15, 2019, including interim periods within those fiscal years. Early adoption is permitted for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2018. This ASU replaces the incurred loss impairment methodology with one that reflects expected credit losses. The measurement of expected credit losses should be based on historical loss information, current conditions, and reasonable and supportable forecasts. The new guidance requires that an other-than-temporary impairment (“OTTI”) on a debt security will be recognized as an allowance going forward, such that improvements in expected future cash flows after an impairment will no longer be reflected as a prospective yield adjustment through net investment income, but rather a reversal of the previous impairment and recognized through realized investment gains and losses. The guidance also requires enhanced disclosures. The Company has assessed the asset classes impacted by the new guidance and is currently assessing the accounting and reporting system changes that will be required to comply with the new guidance. The Company believes that the most significant impact upon adoption will be to its mortgage loan investments. The Company is continuing to evaluate the overall impact of the new guidance on its consolidated financial statements. In February 2016, the FASB issued new guidance on leasing transactions (ASU 2016-02, Leases - Topic 842 ). The new guidance is effective for the fiscal years beginning after December 15, 2018, including interim periods within those fiscal years, and requires a modified retrospective transition approach. Early adoption is permitted. The new guidance requires a lessee to recognize assets and liabilities for leases with lease terms of more than 12 months. Leases would be classified as finance or operating leases and both types of leases will be recognized on the balance sheet. Lessor accounting will remain largely unchanged from current guidance except for certain targeted changes. The new guidance will also require new qualitative and quantitative disclosures. The Company’s implementation efforts are primarily focused on the review of its existing lease contracts as well as identification of other contracts that may fall under the scope of the new guidance. The Company is currently evaluating the impact of this guidance on its consolidated financial statements. In January 2016, the FASB issued new guidance (ASU 2016-01, Financial Instruments-Overall: Recognition and Measurement of Financial Assets and Financial Liabilities ) on the recognition and measurement of financial instruments. The new guidance is effective for fiscal years beginning after December 15, 2017, including interim periods within those fiscal years. Early adoption is permitted for the instrument-specific credit risk provision. The new guidance changes the current accounting guidance related to (i) the classification and measurement of certain equity investments, (ii) the presentation of changes in the fair value of financial liabilities measured under the fair value option (“FVO”) that are due to instrument-specific credit risk, and (iii) certain disclosures associated with the fair value of financial instruments. Additionally, there will no longer be a requirement to assess equity securities for impairment since such securities will be measured at fair value through net income. The Company has assessed the population of financial instruments that are subject to the new guidance and has determined that the most significant impact will be the requirement to report changes in fair value in net income each reporting period for all equity securities currently classified as available-for-sale (“AFS”) and to a lesser extent, other limited partnership interests and real estate joint ventures that are currently accounted for under the cost method. The population of these investments accounted for under the cost method is not material. The Company is continuing to evaluate the overall impact of this guidance on its consolidated financial statements. In May 2014, the FASB issued a comprehensive new revenue recognition standard (ASU 2014-09, Revenue from Contracts with Customers (Topic 606) ), effective for fiscal years beginning after December 15, 2017 and interim periods within those fiscal years. The Company currently plans to apply this guidance retrospectively with a cumulative-effect adjustment as of January 1, 2018. The new guidance will supersede nearly all existing revenue recognition guidance under U.S. GAAP; however, it will not impact the accounting for insurance and investment contracts within the scope of Financial Services insurance (Topic 944), leases, financial instruments and guarantees. For those contracts that are impacted, the guidance will require an entity to recognize revenue upon 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. Given the scope of the new revenue recognition guidance, the Company does not expect the adoption to have a material impact on its consolidated revenues or statements of operations, with the Company’s implementation efforts primarily focused on other revenues within the U.S., MetLife Holdings, and Corporate & Other segments. Other revenues on the consolidated statements of operations represents less than 3% of consolidated total revenues for the six months ended June 30, 2017.

Segment Information

Segment Information	6 Months Ended
	Jun. 30, 2017
Segment Reporting [Abstract]
Segment Information	2. Segment Information As previously announced, in the third quarter of 2016, MetLife reorganized its businesses into six segments: U.S.; Asia; Latin America; EMEA; MetLife Holdings; and Brighthouse Financial, in anticipation of the planned Separation. In addition , the Company reports certain of its results of operations in Corporate & Other. Prior period results have been revised in connection with the reorganization and did not have an impact on total consolidated net income (loss) or operating earnings. U.S. The U.S. segment offers a broad range of protection products and services aimed at serving the financial needs of customers throughout their lives. These products are sold to corporations and their respective employees, other institutions and their respective members, as well as individuals. The U.S. segment is organized into three businesses: Group Benefits, Retirement and Income Solutions and Property & Casualty. • The Group Benefits business offers insurance products and services which include life, dental, group short- and long-term disability, individual disability, accidental death and dismemberment, critical illness, vision and accident & health coverages, as well as prepaid legal plans. This business also sells administrative services-only arrangements to some employers. • The Retirement and Income Solutions business offers a broad range of annuity and investment products, including guaranteed interest contracts and other stable value products, institutional income annuities and separate account contracts for the investment management of defined benefit and defined contribution plan assets. This business also includes structured settlements and certain products to fund postretirement benefits and company-, bank- or trust-owned life insurance used to finance nonqualified benefit programs for executives. • The Property & Casualty business offers personal and commercial lines of property and casualty insurance, including private passenger automobile, homeowners’ and personal excess liability insurance. In addition, Property & Casualty offers small business owners property, liability and business interruption insurance. Asia The Asia segment offers a broad range of products to both individuals and corporations, as well as other institutions and their respective employees, which include whole life, term life, variable life, universal life, accident & health insurance, fixed and variable annuities, credit insurance and endowment products. Latin America The Latin America segment offers a broad range of products to both individuals and corporations, as well as other institutions and their respective employees, which include life insurance, accident & health insurance, group medical, dental, credit insurance, endowment and retirement and savings products. EMEA The EMEA segment offers a broad range of products to both individuals and corporations, as well as other institutions and their respective employees, which include life insurance, accident & health insurance, credit insurance, annuities, endowment and retirement and savings products. MetLife Holdings The MetLife Holdings segment consists of operations relating to products and businesses no longer actively marketed by the Company in the United States. These products and businesses include variable, universal, term and whole life, as well as variable, fixed and index-linked annuities. The MetLife Holdings segment also includes the Company’s discontinued long-term care business and the assumed reinsurance of certain variable annuity products from the Company’s former operating joint venture in Japan. Brighthouse Financial The Brighthouse Financial segment offers a broad range of products and services which include variable, fixed, index-linked and income annuities, as well as variable, universal, term and whole life products. These products and services are actively marketed through various third party retail distribution channels in the United States. In addition, the Brighthouse Financial segment includes certain run-off businesses which are not actively marketed. Corporate & Other Corporate & Other contains the excess capital, as well as certain charges and activities, not allocated to the segments, including external integration and disposition costs, internal resource costs for associates committed to acquisitions and dispositions, enterprise-wide strategic initiative restructuring charges and various start-up businesses (including expatriate benefits insurance and the investment management business through which the Company offers fee-based investment management services to institutional clients, as well as the direct to consumer portion of the U.S. Direct business). Corporate & Other also includes interest expense related to the majority of the Company’s outstanding debt, as well as expenses associated with certain legal proceedings and income tax audit issues. In addition, Corporate & Other includes the elimination of intersegment amounts, which generally relate to affiliated reinsurance and intersegment loans, which bear interest rates commensurate with related borrowings. Financial Measures and Segment Accounting Policies Operating earnings is used by management to evaluate performance and allocate resources. Consistent with GAAP guidance for segment reporting, operating earnings is also the Company’s GAAP measure of segment performance and is reported below. Operating earnings should not be viewed as a substitute for net income (loss).The Company believes the presentation of operating earnings as the Company measures it for management purposes enhances the understanding of its performance by highlighting the results of operations and the underlying profitability drivers of the business. Operating earnings allows analysis of the Company’s performance relative to the Company’s business plan and facilitates comparisons to industry results. Operating earnings is defined as operating revenues less operating expenses, both net of income tax. The financial measures of operating revenues and operating expenses focus on the Company’s primary businesses principally by excluding the impact of market volatility, which could distort trends, and revenues and costs related to non-core products and divested businesses and certain entities required to be consolidated under GAAP. Also, these measures exclude results of discontinued operations and other businesses that have been or will be sold or exited by MetLife and are referred to as divested businesses. In addition, for the three months ended March 31, 2016 and the six months ended June 30, 2016 , operating revenues and operating expenses exclude the financial impact of converting the Company’s Japan operations to calendar year-end reporting without retrospective application of this change to prior periods and is referred to as lag elimination. Operating revenues also excludes net investment gains (losses) and net derivative gains (losses). Operating expenses also excludes goodwill impairments. The following additional adjustments are made to revenues, in the line items indicated, in calculating operating revenues: • Universal life and investment-type product policy fees excludes the amortization of unearned revenue related to net investment gains (losses) and net derivative gains (losses) and certain variable annuity guaranteed minimum income benefits (“GMIBs”) fees (“GMIB Fees”); and • Net investment income: (i) includes earned income on derivatives and amortization of premium on derivatives that are hedges of investments or that are used to replicate certain investments, but do not qualify for hedge accounting treatment,(ii) excludes post-tax operating earnings adjustments relating to insurance joint ventures accounted for under the equity method, (iii) excludes certain amounts related to contractholder-directed unit-linked investments and (iv) excludes certain amounts related to securitization entities that are VIEs consolidated under GAAP; and • Other revenues are adjusted for settlements of foreign currency earnings hedges. The following additional adjustments are made to expenses, in the line items indicated, in calculating operating expenses: • Policyholder benefits and claims and policyholder dividends excludes: (i) changes in the policyholder dividend obligation related to net investment gains (losses) and net derivative gains (losses), (ii) inflation-indexed benefit adjustments associated with contracts backed by inflation-indexed investments and amounts associated with periodic crediting rate adjustments based on the total return of a contractually referenced pool of assets and other pass through adjustments, (iii) benefits and hedging costs related to GMIBs (“GMIB Costs”) and (iv) market value adjustments associated with surrenders or terminations of contracts (“Market Value Adjustments”); • Interest credited to policyholder account balances includes adjustments for earned income on derivatives and amortization of premium on derivatives that are hedges of policyholder account balances but do not qualify for hedge accounting treatment and excludes amounts related to net investment income earned on contractholder-directed unit-linked investments; • Amortization of deferred policy acquisition costs (“DAC”) and value of business acquired (“VOBA”) excludes amounts related to: (i) net investment gains (losses) and net derivative gains (losses), (ii) GMIB Fees and GMIB Costs and (iii) Market Value Adjustments; • Amortization of negative VOBA excludes amounts related to Market Value Adjustments; • Interest expense on debt excludes certain amounts related to securitization entities that are VIEs consolidated under GAAP; and • Other expenses excludes costs related to: (i) noncontrolling interests, (ii) implementation of new insurance regulatory requirements and (iii) acquisition, integration and other costs. Operating earnings also excludes the recognition of certain contingent assets and liabilities that could not be recognized at acquisition or adjusted for during the measurement period under GAAP business combination accounting guidance. The tax impact of the adjustments mentioned above are calculated net of the U.S. or foreign statutory tax rate, which could differ from the Company’s effective tax rate. Additionally, the provision for income tax (expense) benefit also includes the impact related to the timing of certain tax credits, as well as certain tax reforms. Set forth in the tables below is certain financial information with respect to the Company’s segments, as well as Corporate & Other, for the three months and six months ended June 30, 2017 and 2016 . The segment accounting policies are the same as those used to prepare the Company’s consolidated financial statements, except for operating earnings adjustments as defined above. In addition, segment accounting policies include the method of capital allocation described below, with the exception of the Brighthouse Financial segment, for which equity is reflective of the historical equity of the legal entities which comprise Brighthouse and related companies, which will be eliminated upon Separation. The Brighthouse Financial segment equity is not indicative of Brighthouse and related companies’ equity on a combined standalone basis. Economic capital is an internally developed risk capital model, the purpose of which is to measure the risk in the business and to provide a basis upon which capital is deployed. The economic capital model accounts for the unique and specific nature of the risks inherent in the Company’s business. The Company’s economic capital model, coupled with considerations of local capital requirements, aligns segment allocated equity with emerging standards and consistent risk principles. The model applies statistics-based risk evaluation principles to the material risks to which the Company is exposed. These consistent risk principles include calibrating required economic capital shock factors to a specific confidence level and time horizon while applying an industry standard method for the inclusion of diversification benefits among risk types. The Company’s management is responsible for the ongoing production and enhancement of the economic capital model and reviews its approach periodically to ensure that it remains consistent with emerging industry practice standards. Segment net investment income, with the exception of the Brighthouse Financial segment, is credited or charged based on the level of allocated equity; however, changes in allocated equity do not impact the Company’s consolidated net investment income, net income (loss) or operating earnings. As noted above, the Brighthouse Financial segment’s net investment income represents that of the legal entities which comprise Brighthouse and related companies on a historical basis, however, Brighthouse Financial segment’s net investment income may not be indicative of that on a combined standalone basis. Net investment income is based upon the actual results of each segment’s specifically identifiable investment portfolios adjusted for allocated equity. Other costs are allocated to each of the segments based upon: (i) a review of the nature of such costs; (ii) time studies analyzing the amount of employee compensation costs incurred by each segment; and (iii) cost estimates included in the Company’s product pricing. Operating Results Three Months Ended June 30, 2017 U.S. Asia Latin EMEA MetLife Brighthouse Corporate Total Adjustments Total Consolidated (In millions) Revenues Premiums $ 5,877 $ 1,659 $ 645 $ 505 $ 1,022 $ 217 $ 10 $ 9,935 $ — $ 9,935 Universal life and investment-type product policy fees 251 375 275 92 345 885 (32 ) 2,191 111 2,302 Net investment income 1,575 729 289 78 1,401 791 21 4,884 75 4,959 Other revenues 199 11 8 28 37 162 (68 ) 377 5 382 Net investment gains (losses) — — — — — — — — 104 104 Net derivative gains (losses) — — — — — — — — (437 ) (437 ) Total revenues 7,902 2,774 1,217 703 2,805 2,055 (69 ) 17,387 (142 ) 17,245 Expenses Policyholder benefits and claims and policyholder dividends 5,878 1,247 596 270 1,720 654 (15 ) 10,350 272 10,622 Interest credited to policyholder account balances 359 333 94 25 255 283 — 1,349 213 1,562 Capitalization of DAC (116 ) (428 ) (88 ) (100 ) (23 ) (63 ) (3 ) (821 ) — (821 ) Amortization of DAC and VOBA 114 290 68 95 139 136 2 844 (140 ) 704 Amortization of negative VOBA — (30 ) — (5 ) — — — (35 ) (3 ) (38 ) Interest expense on debt 4 — 2 — 5 26 257 294 1 295 Other expenses 914 895 357 332 370 647 61 3,576 343 3,919 Total expenses 7,153 2,307 1,029 617 2,466 1,683 302 15,557 686 16,243 Provision for income tax expense (benefit) 250 157 34 14 104 89 (271 ) 377 (262 ) 115 Operating earnings $ 499 $ 310 $ 154 $ 72 $ 235 $ 283 $ (100 ) 1,453 Adjustments to: Total revenues (142 ) Total expenses (686 ) Provision for income tax (expense) benefit 262 Net income (loss) $ 887 $ 887 Operating Results Three Months Ended June 30, 2016 U.S. Asia Latin EMEA MetLife Brighthouse Corporate Total Adjustments Total Consolidated (In millions) Revenues Premiums $ 5,171 $ 1,681 $ 631 $ 519 $ 1,122 $ 280 $ 13 $ 9,417 $ — $ 9,417 Universal life and investment-type product policy fees 248 370 269 95 361 861 (31 ) 2,173 113 2,286 Net investment income 1,565 678 243 83 1,477 870 (35 ) 4,881 6 4,887 Other revenues 193 16 8 19 203 346 (301 ) 484 3 487 Net investment gains (losses) — — — — — — — — 266 266 Net derivative gains (losses) — — — — — — — — (2,099 ) (2,099 ) Total revenues 7,177 2,745 1,151 716 3,163 2,357 (354 ) 16,955 (1,711 ) 15,244 Expenses Policyholder benefits and claims and policyholder dividends 5,270 1,324 583 283 1,927 1,008 (10 ) 10,385 213 10,598 Interest credited to policyholder account balances 323 324 84 30 261 291 1 1,314 186 1,500 Capitalization of DAC (121 ) (426 ) (80 ) (106 ) (96 ) (83 ) (3 ) (915 ) — (915 ) Amortization of DAC and VOBA 118 304 66 103 269 152 3 1,015 (894 ) 121 Amortization of negative VOBA — (57 ) — (4 ) — — — (61 ) (6 ) (67 ) Interest expense on debt 3 — — — 14 32 254 303 3 306 Other expenses 918 877 323 336 864 555 (214 ) 3,659 142 3,801 Total expenses 6,511 2,346 976 642 3,239 1,955 31 15,700 (356 ) 15,344 Provision for income tax expense (benefit) 223 140 38 10 (43 ) 105 (188 ) 285 (499 ) (214 ) Operating earnings $ 443 $ 259 $ 137 $ 64 $ (33 ) $ 297 $ (197 ) 970 Adjustments to: Total revenues (1,711 ) Total expenses 356 Provision for income tax (expense) benefit 499 Net income (loss) $ 114 $ 114 Operating Results Six Months Ended June 30, 2017 U.S. Asia Latin EMEA MetLife Holdings Brighthouse Financial Corporate & Other Total Adjustments Total (In millions) Revenues Premiums $ 11,062 $ 3,367 $ 1,292 $ 1,007 $ 2,081 $ 394 $ 47 $ 19,250 $ — $ 19,250 Universal life and investment-type product policy fees 516 741 535 187 707 1,769 (63 ) 4,392 212 4,604 Net investment income 3,187 1,431 592 152 2,842 1,649 26 9,879 276 10,155 Other revenues 403 21 17 45 133 236 (110 ) 745 11 756 Net investment gains (losses) — — — — — — — — 112 112 Net derivative gains (losses) — — — — — — — — (1,363 ) (1,363 ) Total revenues 15,168 5,560 2,436 1,391 5,763 4,048 (100 ) 34,266 (752 ) 33,514 Expenses Policyholder benefits and claims and policyholder dividends 11,113 2,562 1,229 539 3,456 1,285 (6 ) 20,178 620 20,798 Interest credited to policyholder account balances 710 654 176 49 512 558 — 2,659 615 3,274 Capitalization of DAC (216 ) (848 ) (170 ) (192 ) (57 ) (130 ) (4 ) (1,617 ) — (1,617 ) Amortization of DAC and VOBA 228 581 146 182 213 336 3 1,689 (452 ) 1,237 Amortization of negative VOBA — (67 ) — (8 ) — — — (75 ) (6 ) (81 ) Interest expense on debt 6 — 3 — 20 58 503 590 1 591 Other expenses 1,823 1,770 683 648 710 1,259 151 7,044 449 7,493 Total expenses 13,664 4,652 2,067 1,218 4,854 3,366 647 30,468 1,227 31,695 Provision for income tax expense (benefit) 502 303 72 26 289 155 (554 ) 793 (690 ) 103 Operating earnings $ 1,002 $ 605 $ 297 $ 147 $ 620 $ 527 $ (193 ) 3,005 Adjustments to: Total revenues (752 ) Total expenses (1,227 ) Provision for income tax (expense) benefit 690 Net income (loss) $ 1,716 $ 1,716 Operating Results Six Months Ended June 30, 2016 U.S. Asia Latin America EMEA MetLife Holdings Brighthouse Financial Corporate & Other Total Adjustments Total (In millions) Revenues Premiums $ 10,191 $ 3,339 $ 1,232 $ 1,019 $ 2,219 $ 673 $ 11 $ 18,684 $ 426 $ 19,110 Universal life and investment-type product policy fees 498 720 537 190 716 1,719 (56 ) 4,324 306 4,630 Net investment income 3,025 1,296 498 163 2,952 1,683 (30 ) 9,587 (141 ) 9,446 Other revenues 397 33 15 39 407 432 (352 ) 971 3 974 Net investment gains (losses) — — — — — — — — 281 281 Net derivative gains (losses) — — — — — — — — (764 ) (764 ) Total revenues 14,111 5,388 2,282 1,411 6,294 4,507 (427 ) 33,566 111 33,677 Expenses Policyholder benefits and claims and policyholder dividends 10,316 2,560 1,133 544 3,750 1,711 (36 ) 19,978 613 20,591 Interest credited to policyholder account balances 645 643 164 59 519 580 5 2,615 211 2,826 Capitalization of DAC (232 ) (811 ) (153 ) (207 ) (196 ) (185 ) (7 ) (1,791 ) (105 ) (1,896 ) Amortization of DAC and VOBA 236 590 129 205 417 314 5 1,896 (780 ) 1,116 Amortization of negative VOBA — (121 ) — (7 ) — — — (128 ) (38 ) (166 ) Interest expense on debt 5 — — — 28 64 518 615 3 618 Other expenses 1,860 1,728 633 669 1,460 1,179 (160 ) 7,369 397 7,766 Total expenses 12,830 4,589 1,906 1,263 5,978 3,663 325 30,554 301 30,855 Provision for income tax expense (benefit) 432 235 88 21 82 220 (371 ) 707 (202 ) 505 Operating earnings $ 849 $ 564 $ 288 $ 127 $ 234 $ 624 $ (381 ) 2,305 Adjustments to: Total revenues 111 Total expenses (301 ) Provision for income tax (expense) benefit 202 Net income (loss) $ 2,317 $ 2,317 The following table presents total assets with respect to the Company’s segments, as well as Corporate & Other, at: June 30, 2017 December 31, 2016 (In millions) U.S. $ 257,676 $ 253,683 Asia 130,363 120,656 Latin America 72,458 67,233 EMEA 28,219 25,596 MetLife Holdings 184,817 184,276 Brighthouse Financial 224,933 222,681 Corporate & Other 26,733 24,639 Total $ 925,199 $ 898,764

Separation

Separation	6 Months Ended
	Jun. 30, 2017
Separation [Abstract]
Mergers, Acquisitions and Dispositions Disclosures [Text Block]	3. Separation Spin-off of Brighthouse In January 2016, MetLife, Inc. announced its plan to pursue the Separation. MetLife, Inc. subsequently re-segmented the business to be separated and rebranded it as “Brighthouse Financial.” On June 29, 2017, MetLife, Inc. announced that its Board of Directors had approved the spin-off of its wholly-owned subsidiary, Brighthouse Financial, Inc. (“Brighthouse”). MetLife, Inc. common shareholders will receive a distribution of one share of Brighthouse common stock for every 11 shares of MetLife, Inc. common stock they own. Shareholders of MetLife, Inc. who own less than 11 shares of common stock, or others who would otherwise receive fractional shares, will receive cash. The record date for the distribution was 5:00 p.m., New York City time, on July 19, 2017, and the distribution date will be 5:00 p.m., New York City time, on August 4, 2017. On August 3, 2017, MetLife, Inc. announced that it expects to distribute 96,776,670 of the 119,773,106 shares of Brighthouse common stock, representing approximately 80.8% of those shares. Certain MetLife affiliates hold MetLife common stock and, as a result, will participate in the distribution. On July 6, 2017, MetLife, Inc. announced that the U.S. Securities and Exchange Commission (“SEC”) has declared Brighthouse’s registration statement on Form 10 effective. Additionally, all required state regulatory approvals have been granted. The Separation remains subject to continuing validity of a ruling from the Internal Revenue Service and an opinion from MetLife’s tax advisor regarding certain U.S. federal income tax matters. Transactions in Connection with the Spin-off In connection with the spin-off, the Company completed the following transactions in 2017: Contributions of Entities, Mergers and Dividend In April 2017, following receipt of applicable regulatory approvals, MetLife contributed certain captive reinsurance companies to Brighthouse Life Insurance Company (“Brighthouse Insurance”), which were merged into Brighthouse Reinsurance Company of Delaware (“BRCD”), a newly-formed captive reinsurance company that is wholly-owned by Brighthouse Insurance. On July 27, 2017, MetLife, Inc. contributed the voting common interests of Brighthouse Holdings, LLC, a subsidiary of MetLife, Inc., to Brighthouse. Brighthouse Holdings, LLC is an intermediate holding company, which owns of all of the subsidiaries within Brighthouse. On August 3, 2017, Brighthouse paid a cash dividend to MetLife, Inc. of $1.8 billion in connection with the Separation. Termination of Financing Arrangements In April 2017, MetLife, Inc. and MetLife Reinsurance Company of South Carolina (“MRSC”) terminated the MRSC collateral financing arrangement associated with secondary guarantees. As a result, the $2.8 billion collateral financing arrangement liability outstanding was extinguished utilizing $2.8 billion of assets held in trust with the remaining $590 million of assets held in trust returned to MetLife, Inc. as a cash return of capital from a subsidiary. Total fees associated with the termination were $37 million and were included in other expenses. In April 2017, MetLife, Inc. and MetLife Reinsurance Company of Vermont terminated the $4.3 billion committed facility, and MetLife, Inc. and MRSC terminated the $3.5 billion committed facility. Total fees associated with the terminations were $257 million and were included in other expenses. In June 2017, MetLife, Inc. forgave Brighthouse Insurance’s obligation to pay the principal amount of $750 million affiliated surplus notes held by MetLife, Inc. This transaction was a non-cash contribution to Brighthouse Holdings, LLC with a corresponding non-cash capital contribution to Brighthouse Insurance and had no impact on the consolidated financial statements of MetLife. See Note 9 . New Financing Arrangements In April 2017, BRCD entered into a new financing arrangement with a pool of highly rated third-party reinsurers with a total capacity of $10.0 billion . This financing arrangement consists of credit-linked notes that each has a term of 20 years. At June 30, 2017, there were no drawdowns and there was $8.1 billion of funding available under this financing arrangement. In June 2017, Brighthouse Holdings, LLC issued 50,000 units of 6.50% fixed rate cumulative preferred units to MetLife, Inc. and in turn MetLife, Inc. sold the preferred units to third-party investors, for net proceeds of $49 million , and recorded the subsidiary preferred units in noncontrolling interests. In June 2017, Brighthouse issued $1.5 billion of senior notes due in June 2027 (the “2027 Senior Notes”) which bear interest at a fixed rate of 3.70% , payable semi-annually. Also in June 2017, Brighthouse issued $1.5 billion of senior notes due in June 2047 (the “2047 Senior Notes,” and together with the 2027 Senior Notes, the “Senior Notes”) which bear interest at a fixed rate of 4.70% , payable semi-annually. Brighthouse incurred $25 million of related costs which have been capitalized and are being amortized over the terms of the Senior Notes. See “— Senior Notes Guarantee” below for additional information. In June 2017, subsequent to the issuance of the Senior Notes, the borrowing capacity under Brighthouse’s three-year senior unsecured delayed draw term loan agreement (the “2016 Term Loan Agreement”) was decreased from $3.0 billion to $536 million . On July 21, 2017, concurrently with entering into a new term loan agreement described below, Brighthouse terminated the 2016 Term Loan Agreement without penalty. Brighthouse will expense $7 million of capitalized costs related to the termination in the third quarter of 2017. On July 21, 2017, Brighthouse entered into a new $600 million senior unsecured delayed draw term loan agreement (the “2017 Term Loan Agreement”). Under the 2017 Term Loan Agreement, Brighthouse may borrow up to a maximum of $600 million which may be used for general corporate purposes, including in connection with the Separation, of which $500 million is available prior to the Separation. The 2017 Term Loan Agreement contains certain covenants that could restrict the operations and use of funds of Brighthouse. On August 2, 2017, Brighthouse borrowed $500 million under the 2017 Term Loan Agreement in connection with the Separation. Senior Notes Guarantee In connection with the issuance of the Senior Notes, MetLife, Inc. has initially guaranteed the Senior Notes on a senior unsecured basis (the “Guarantee”). Under the Guarantee, MetLife, Inc. fully and unconditionally guaranteed to each holder of the Senior Notes the full and prompt payment of principal of the Senior Notes, the premium on the Senior Notes, if any, and the interest on the Senior Notes, and all other obligations of Brighthouse under the Senior Notes, when the same become due. The Guarantee will be automatically and unconditionally released upon the completion of both (i) the contribution by MetLife, Inc. of all the voting common interests in Brighthouse Holdings, LLC, including its direct and indirect subsidiaries, to Brighthouse and (ii) the consummation of the transfer by MetLife, Inc. of at least 80.1% of the shares of Brighthouse’s common stock to one or more persons, other than MetLife, Inc. or any of its affiliates, through a spin-off to the holders of MetLife Inc.’s common stock, a public offering of shares in an independent publicly traded company, or a sale ((i) and (ii) together, a “Brighthouse Stock Distribution Event”). If a Brighthouse Stock Distribution Event has not occurred on or prior to December 31, 2017, Brighthouse must redeem the Senior Notes, in whole, on the tenth business day following December 31, 2017 (the “special mandatory redemption date”). In the event of such a redemption, Brighthouse must redeem the Senior Notes at a special mandatory redemption price of 101% of the then-outstanding aggregate principal amount of the Senior Notes, together with accrued and unpaid interest from the last date on which interest has been paid up to, but excluding, the special mandatory redemption date. The Senior Notes are direct financial obligations of Brighthouse and the Guarantee is a direct financial obligation of MetLife, Inc. Termination of Support Agreements In April 2017, in connection with the contribution of entities, mergers and financing transactions discussed above, MetLife, Inc. terminated various support agreements with the captive reinsurance companies merged into BRCD. See Schedule II included in the 2016 Annual Report for information on the support agreements that were terminated.

Insurance

Insurance	6 Months Ended
	Jun. 30, 2017
Insurance [Abstract]
Insurance	4. Insurance Guarantees As discussed in Notes 1 and 4 of the Notes to the Consolidated Financial Statements included in the 2016 Annual Report, the Company issues directly and assumes through reinsurance variable annuity products with guaranteed minimum benefits. Guaranteed minimum accumulation benefits (“GMABs”) and the portions of both non-life-contingent guaranteed minimum withdrawal benefits (“GMWBs”) and the GMIBs that do not require annuitization are accounted for as embedded derivatives in policyholder account balances and are further discussed in Note 7 . The Company also issues other annuity contracts that apply a lower rate on funds deposited if the contractholder elects to surrender the contract for cash and a higher rate if the contractholder elects to annuitize. These guarantees include benefits that are payable in the event of death, maturity or at annuitization. Certain other annuity contracts contain guaranteed annuitization benefits that may be above what would be provided by the current account value of the contract. Additionally, the Company issues universal and variable life contracts where the Company contractually guarantees to the contractholder a secondary guarantee or a guaranteed paid-up benefit. Information regarding the Company’s guarantee exposure, which includes direct and assumed business, but excludes offsets from hedging or ceded reinsurance, if any, was as follows at: June 30, 2017 December 31, 2016 In the At In the At (Dollars in millions) Annuity Contracts (1): Variable Annuity Guarantees: Total account value (2), (3) $ 181,810 $ 91,863 $ 177,895 $ 89,839 Separate account value $ 154,498 $ 88,450 $ 150,118 $ 86,355 Net amount at risk (2) $ 7,382 (4 ) $ 3,896 (5 ) $ 8,679 (4 ) $ 3,834 (5 ) Average attained age of contractholders 67 years 67 years 66 years 66 years Other Annuity Guarantees: Total account value (3) N/A $ 1,397 N/A $ 1,393 Net amount at risk N/A $ 491 (6 ) N/A $ 490 (6 ) Average attained age of contractholders N/A 51 years N/A 50 years June 30, 2017 December 31, 2016 Secondary Paid-Up Secondary Paid-Up (Dollars in millions) Universal and Variable Life Contracts (1): Total account value (3) $ 18,147 $ 3,270 $ 17,689 $ 3,337 Net amount at risk (7) $ 170,470 $ 17,186 $ 172,860 $ 17,785 Average attained age of policyholders 58 years 63 years 58 years 62 years __________________ (1) The Company’s annuity and life contracts with guarantees may offer more than one type of guarantee in each contract. Therefore, the amounts listed above may not be mutually exclusive. (2) Includes amounts, which are not reported on the consolidated balance sheets, from assumed reinsurance of certain variable annuity products from the Company’s former operating joint venture in Japan. (3) Includes the contractholder’s investments in the general account and separate account, if applicable. (4) Defined as the death benefit less the total account value, as of the balance sheet date. It represents the amount of the claim that the Company would incur if death claims were filed on all contracts on the balance sheet date and includes any additional contractual claims associated with riders purchased to assist with covering income taxes payable upon death. (5) Defined as the amount (if any) that would be required to be added to the total account value to purchase a lifetime income stream, based on current annuity rates, equal to the minimum amount provided under the guaranteed benefit. This amount represents the Company’s potential economic exposure to such guarantees in the event all contractholders were to annuitize on the balance sheet date, even though the contracts contain terms that allow annuitization of the guaranteed amount only after the 10th anniversary of the contract, which not all contractholders have achieved. (6) Defined as either the excess of the upper tier, adjusted for a profit margin, less the lower tier, as of the balance sheet date or the amount (if any) that would be required to be added to the total account value to purchase a lifetime income stream, based on current annuity rates, equal to the minimum amount provided under the guaranteed benefit. These amounts represent the Company’s potential economic exposure to such guarantees in the event all contractholders were to annuitize on the balance sheet date. (7) Defined as the guarantee amount less the account value, as of the balance sheet date. It represents the amount of the claim that the Company would incur if death claims were filed on all contracts on the balance sheet date. Liabilities for Unpaid Claims and Claim Expenses Rollforward of Claims and Claim Adjustment Expenses Information regarding the liabilities for unpaid claims and claim adjustment expenses was as follows: Six Months 2017 2016 (In millions) Balance at December 31 of prior period $ 18,159 $ 11,388 Less: Reinsurance recoverables 3,058 2,042 Net Balance at December 31 of prior period 15,101 9,346 Cumulative adjustment (1) — 4,988 Net balance, beginning of period 15,101 14,334 Incurred related to: Current period 13,126 12,985 Prior periods (2) 14 28 Total incurred 13,140 13,013 Paid related to: Current period (8,850 ) (8,351 ) Prior periods (3,811 ) (3,772 ) Total paid (12,661 ) (12,123 ) Net balance, end of period 15,580 15,224 Add: Reinsurance recoverables 3,182 2,873 Balance, end of period (included in future policy benefits and other policy-related balances) $ 18,762 $ 18,097 __________________ (1) Reflects the accumulated adjustment, net of reinsurance, upon implementation of the new short-duration contracts guidance which clarified the requirement to include claim information for long-duration contracts. The accumulated adjustment primarily reflects unpaid claim liabilities, net of reinsurance, for long-duration contracts as of the beginning of the period presented. (2) During both the six months ended June 30, 2017 and 2016, as a result of changes in estimates of insured events in the respective prior periods, the claims and claim adjustment expenses associated with prior periods increased due to unfavorable claims experience.

Closed Block

Closed Block	6 Months Ended
	Jun. 30, 2017
Closed Block Disclosure [Abstract]
Closed Block	5. Closed Block On April 7, 2000 (the “Demutualization Date”), Metropolitan Life Insurance Company (“MLIC”) converted from a mutual life insurance company to a stock life insurance company and became a wholly-owned subsidiary of MetLife, Inc. The conversion was pursuant to an order by the New York Superintendent of Insurance approving MLIC’s plan of reorganization, as amended (the “Plan of Reorganization”). On the Demutualization Date, MLIC established a closed block for the benefit of holders of certain individual life insurance policies of MLIC. Experience within the closed block, in particular mortality and investment yields, as well as realized and unrealized gains and losses, directly impact the policyholder dividend obligation. Amortization of the closed block DAC, which resides outside of the closed block, is based upon cumulative actual and expected earnings within the closed block. Accordingly, the Company’s net income continues to be sensitive to the actual performance of the closed block. Closed block assets, liabilities, revenues and expenses are combined on a line-by-line basis with the assets, liabilities, revenues and expenses outside the closed block based on the nature of the particular item. Information regarding the closed block liabilities and assets designated to the closed block was as follows at: June 30, 2017 December 31, 2016 (In millions) Closed Block Liabilities Future policy benefits $ 40,567 $ 40,834 Other policy-related balances 187 257 Policyholder dividends payable 476 443 Policyholder dividend obligation 2,237 1,931 Current income tax payable — 4 Other liabilities 240 196 Total closed block liabilities 43,707 43,665 Assets Designated to the Closed Block Investments: Fixed maturity securities available-for-sale, at estimated fair value 27,474 27,220 Equity securities available-for-sale, at estimated fair value 292 100 Mortgage loans 5,919 5,935 Policy loans 4,541 4,553 Real estate and real estate joint ventures 634 655 Other invested assets 809 1,246 Total investments 39,669 39,709 Cash and cash equivalents 99 18 Accrued investment income 466 467 Premiums, reinsurance and other receivables 138 68 Deferred income tax assets 158 177 Total assets designated to the closed block 40,530 40,439 Excess of closed block liabilities over assets designated to the closed block 3,177 3,226 Amounts included in accumulated other comprehensive income (loss) (“AOCI”): Unrealized investment gains (losses), net of income tax 1,814 1,517 Unrealized gains (losses) on derivatives, net of income tax 57 95 Allocated to policyholder dividend obligation, net of income tax (1,454 ) (1,255 ) Total amounts included in AOCI 417 357 Maximum future earnings to be recognized from closed block assets and liabilities $ 3,594 $ 3,583 Information regarding the closed block policyholder dividend obligation was as follows: Six Months Year (In millions) Balance, beginning of period $ 1,931 $ 1,783 Change in unrealized investment and derivative gains (losses) 306 148 Balance, end of period $ 2,237 $ 1,931 Information regarding the closed block revenues and expenses was as follows: Three Months Six Months 2017 2016 2017 2016 (In millions) Revenues Premiums $ 432 $ 444 $ 834 $ 861 Net investment income 452 469 918 949 Net investment gains (losses) (2 ) 12 (10 ) (16 ) Net derivative gains (losses) (10 ) 4 (18 ) (7 ) Total revenues 872 929 1,724 1,787 Expenses Policyholder benefits and claims 614 632 1,182 1,242 Policyholder dividends 247 246 497 491 Other expenses 32 35 64 67 Total expenses 893 913 1,743 1,800 Revenues, net of expenses before provision for income tax expense (benefit) (21 ) 16 (19 ) (13 ) Provision for income tax expense (benefit) (8 ) 6 (8 ) (5 ) Revenues, net of expenses and provision for income tax expense (benefit) $ (13 ) $ 10 $ (11 ) $ (8 ) MLIC charges the closed block with federal income taxes, state and local premium taxes and other state or local taxes, as well as investment management expenses relating to the closed block as provided in the Plan of Reorganization. MLIC also charges the closed block for expenses of maintaining the policies included in the closed block.

Investments

Investments	6 Months Ended
	Jun. 30, 2017
Investments, Debt and Equity Securities [Abstract]
Investments	6. Investments Fixed Maturity and Equity Securities Available-for-Sale Fixed Maturity and Equity Securities Available-for-Sale by Sector The following table presents the fixed maturity and equity securities AFS by sector. Redeemable preferred stock is reported within U.S. corporate and foreign corporate fixed maturity securities and non-redeemable preferred stock is reported within equity securities. Included within fixed maturity securities are structured securities including residential mortgage-backed securities (“RMBS”), asset-backed securities (“ABS”) and commercial mortgage-backed securities (“CMBS”) (collectively, “Structured Securities”). June 30, 2017 December 31, 2016 Cost or Amortized Cost Gross Unrealized Estimated Fair Value Cost or Amortized Cost Gross Unrealized Estimated Fair Value Gains Temporary Losses OTTI Gains Temporary Losses OTTI (In millions) Fixed maturity securities: U.S. corporate $ 94,759 $ 8,426 $ 586 $ — $ 102,599 $ 94,558 $ 7,351 $ 1,056 $ — $ 100,853 U.S. government and agency 54,356 5,922 399 — 59,879 53,326 4,977 780 — 57,523 Foreign government 54,708 6,712 312 — 61,108 50,923 6,600 385 — 57,138 Foreign corporate 57,709 3,819 1,054 — 60,474 55,676 3,132 1,752 (1 ) 57,057 RMBS 37,355 1,472 334 (39 ) 38,532 36,293 1,244 554 (10 ) 36,993 State and political subdivision 14,234 2,060 40 — 16,254 14,566 1,733 122 1 16,176 ABS 14,088 124 74 3 14,135 13,920 101 141 3 13,877 CMBS 10,821 341 60 (1 ) 11,103 11,092 282 103 (1 ) 11,272 Total fixed maturity securities $ 338,030 $ 28,876 $ 2,859 $ (37 ) $ 364,084 $ 330,354 $ 25,420 $ 4,893 $ (8 ) $ 350,889 Equity securities: Common stock $ 2,280 $ 411 $ 16 $ — $ 2,675 $ 1,927 $ 488 $ 14 $ — $ 2,401 Non-redeemable preferred stock 703 52 15 — 740 817 25 49 — 793 Total equity securities $ 2,983 $ 463 $ 31 $ — $ 3,415 $ 2,744 $ 513 $ 63 $ — $ 3,194 __________________ (1) Noncredit OTTI losses included in AOCI in an unrealized gain position are due to increases in estimated fair value subsequent to initial recognition of noncredit losses on such securities. See also “— Net Unrealized Investment Gains (Losses).” The Company held non-income producing fixed maturity securities with an estimated fair value of $1 million and $6 million , and unrealized gains (losses) of ($4) million and ($2) million , at June 30, 2017 and December 31, 2016 , respectively. Maturities of Fixed Maturity Securities The amortized cost and estimated fair value of fixed maturity securities, by contractual maturity date, were as follows at June 30, 2017 : Due in One Due After Due After Five Years Through Ten Years Due After Ten Years Structured Securities Total Fixed Maturity Securities (In millions) Amortized cost $ 14,582 $ 71,452 $ 70,413 $ 119,319 $ 62,264 $ 338,030 Estimated fair value $ 14,713 $ 74,867 $ 74,093 $ 136,641 $ 63,770 $ 364,084 Actual maturities may differ from contractual maturities due to the exercise of call or prepayment options. Fixed maturity securities not due at a single maturity date have been presented in the year of final contractual maturity. Structured Securities are shown separately, as they are not due at a single maturity. Continuous Gross Unrealized Losses for Fixed Maturity and Equity Securities AFS by Sector The following table presents the estimated fair value and gross unrealized losses of fixed maturity and equity securities AFS in an unrealized loss position, aggregated by sector and by length of time that the securities have been in a continuous unrealized loss position at: June 30, 2017 December 31, 2016 Less than 12 Months Equal to or Greater than 12 Months Less than 12 Months Equal to or Greater than 12 Months Estimated Fair Value Gross Unrealized Losses Estimated Fair Value Gross Unrealized Losses Estimated Fair Value Gross Unrealized Losses Estimated Fair Value Gross Unrealized Losses (Dollars in millions) Fixed maturity securities: U.S. corporate $ 10,077 $ 310 $ 3,305 $ 276 $ 16,147 $ 656 $ 3,684 $ 400 U.S. government and agency 20,004 378 189 21 13,500 760 141 20 Foreign government 6,448 227 1,012 85 6,228 271 924 114 Foreign corporate 7,081 234 6,741 820 11,613 639 6,127 1,112 RMBS 12,033 215 1,753 80 12,943 403 2,618 141 State and political subdivision 1,062 32 97 8 2,636 114 85 9 ABS 2,711 10 1,496 67 2,702 33 2,789 111 CMBS 1,402 22 601 37 2,570 48 735 54 Total fixed maturity securities $ 60,818 $ 1,428 $ 15,194 $ 1,394 $ 68,339 $ 2,924 $ 17,103 $ 1,961 Equity securities: Common stock 331 16 $ 2 $ — $ 105 $ 14 $ 11 $ — Non-redeemable preferred stock 28 — 134 15 196 9 165 40 Total equity securities $ 359 $ 16 $ 136 $ 15 $ 301 $ 23 $ 176 $ 40 Total number of securities in an unrealized loss position 3,981 1,544 5,321 1,790 Evaluation of AFS Securities for OTTI and Evaluating Temporarily Impaired AFS Securities As described more fully in Notes 1 and 8 of the Notes to the Consolidated Financial Statements included in the 2016 Annual Report, the Company performs a regular evaluation of all investment classes for impairment, including fixed maturity securities, equity securities and perpetual hybrid securities, in accordance with its impairment policy, in order to evaluate whether such investments are other-than-temporarily impaired. Current Period Evaluation Based on the Company’s current evaluation of its AFS securities in an unrealized loss position in accordance with its impairment policy, and the Company’s current intentions and assessments (as applicable to the type of security) about holding, selling and any requirements to sell these securities, the Company concluded that these securities were not other-than-temporarily impaired at June 30, 2017 . Future OTTI will depend primarily on economic fundamentals, issuer performance (including changes in the present value of future cash flows expected to be collected), changes in credit ratings, collateral valuation, interest rates and credit spreads, as well as a change in the Company’s intention to hold or sell a security that is in an unrealized loss position. If economic fundamentals deteriorate or if there are adverse changes in the above factors, OTTI may be incurred in upcoming periods. Gross unrealized losses on fixed maturity securities decreased $2.1 billion during the six months ended June 30, 2017 to $2.8 billion . The decrease in gross unrealized losses for the six months ended June 30, 2017 was primarily attributable to narrowing credit spreads and decreasing longer-term interest rates, and to a lesser extent, the impact of strengthening foreign currencies on non-functional currency denominated fixed maturity securities. At June 30, 2017 , $168 million of the total $2.8 billion of gross unrealized losses were from 56 fixed maturity securities with an unrealized loss position of 20% or more of amortized cost for six months or greater. The change in gross unrealized losses on equity securities was not significant during the six months ended June 30, 2017 . Investment Grade Fixed Maturity Securities Of the $168 million of gross unrealized losses on fixed maturity securities with an unrealized loss of 20% or more of amortized cost for six months or greater, $132 million , or 79% , were related to gross unrealized losses on 28 investment grade fixed maturity securities. Unrealized losses on investment grade fixed maturity securities are principally related to widening credit spreads since purchase and, with respect to fixed-rate fixed maturity securities, rising interest rates since purchase. Below Investment Grade Fixed Maturity Securities Of the $168 million of gross unrealized losses on fixed maturity securities with an unrealized loss of 20% or more of amortized cost for six months or greater, $36 million , or 21% , were related to gross unrealized losses on 28 below investment grade fixed maturity securities. Unrealized losses on below investment grade fixed maturity securities are principally related to U.S. and foreign corporate securities (primarily utility and industrial securities) and are the result of significantly wider credit spreads resulting from higher risk premiums since purchase, largely due to economic and market uncertainties including concerns over lower oil prices in the energy sector. Management evaluates U.S. and foreign corporate securities based on factors such as expected cash flows and the financial condition and near-term and long-term prospects of the issuers. Mortgage Loans Mortgage Loans by Portfolio Segment Mortgage loans are summarized as follows at: June 30, 2017 December 31, 2016 Carrying Value % of Carrying Value % of (Dollars in millions) Mortgage loans: Commercial $ 49,549 63.9 % $ 48,035 64.4 % Agricultural 14,877 19.2 14,456 19.4 Residential 12,764 16.4 11,696 15.7 Subtotal (1) 77,190 99.5 74,187 99.5 Valuation allowances (356 ) (0.5 ) (344 ) (0.5 ) Subtotal mortgage loans, net 76,834 99.0 73,843 99.0 Residential — FVO 615 0.8 566 0.8 Commercial mortgage loans held by CSEs — FVO 123 0.2 136 0.2 Total mortgage loans, net $ 77,572 100.0 % $ 74,545 100.0 % __________________ (1) Purchases of mortgage loans were $888 million and $1.8 billion for the three months and six months ended June 30, 2017 , respectively, and $1.2 billion and $1.4 billion for the three months and six months ended June 30, 2016 , respectively. See “— Variable Interest Entities” for discussion of consolidated securitization entities (“CSEs”). I nformation on commercial, agricultural and residential mortgage loans is presented in the tables below. Information on residential — FVO and commercial mortgage loans held by CSEs — FVO is presented in Note 8 . The Company elects the FVO for certain mortgage loans and related long-term debt that are managed on a total return basis. Mortgage Loans, Valuation Allowance and Impaired Loans by Portfolio Segment Mortgage loans by portfolio segment, by method of evaluation of credit loss, impaired mortgage loans including those modified in a troubled debt restructuring, and the related valuation allowances, were as follows at: Evaluated Individually for Credit Losses Evaluated Collectively for Credit Losses Impaired Loans Impaired Loans with a Valuation Allowance Impaired Loans without a Valuation Allowance Unpaid Principal Balance Recorded Investment Valuation Unpaid Principal Balance Recorded Recorded Valuation Carrying (In millions) June 30, 2017 Commercial $ — $ — $ — $ — $ — $ 49,549 $ 242 $ — Agricultural 15 13 1 4 4 14,860 45 16 Residential — — — 324 294 12,470 68 294 Total $ 15 $ 13 $ 1 $ 328 $ 298 $ 76,879 $ 355 $ 310 December 31, 2016 Commercial $ — $ — $ — $ 12 $ 12 $ 48,023 $ 234 $ 12 Agricultural 15 13 1 27 27 14,416 43 39 Residential — — — 266 242 11,454 66 242 Total $ 15 $ 13 $ 1 $ 305 $ 281 $ 73,893 $ 343 $ 293 The average recorded investment for impaired commercial, agricultural and residential mortgage loans was $6 million , $16 million and $280 million , respectively, for the three months ended June 30, 2017 ; and $8 million , $24 million and $268 million , respectively, for the six months ended June 30, 2017 . The average recorded investment for impaired commercial, agricultural and residential mortgage loans was $184 million , $52 million and $175 million , respectively, for the three months ended June 30, 2016 ; and $142 million , $57 million and $160 million , respectively, for the six months ended June 30, 2016 . Valuation Allowance Rollforward by Portfolio Segment The changes in the valuation allowance, by portfolio segment, were as follows: Six Months 2017 2016 Commercial Agricultural Residential Total Commercial Agricultural Residential Total (In millions) Balance, beginning of period $ 234 $ 44 $ 66 $ 344 $ 217 $ 42 $ 59 $ 318 Provision (release) 8 2 10 20 150 1 7 158 Charge-offs, net of recoveries — — (8 ) (8 ) — (2 ) (7 ) (9 ) Balance, end of period $ 242 $ 46 $ 68 $ 356 $ 367 $ 41 $ 59 $ 467 Credit Quality of Commercial Mortgage Loans The credit quality of commercial mortgage loans was as follows at: Recorded Investment Estimated % of Total Debt Service Coverage Ratios % of Total > 1.20x 1.00x - 1.20x < 1.00x Total (Dollars in millions) June 30, 2017 Loan-to-value ratios: Less than 65% $ 43,059 $ 1,693 $ 236 $ 44,988 90.8 % $ 46,034 91.0 % 65% to 75% 3,658 250 210 4,118 8.3 4,113 8.2 76% to 80% 57 148 67 272 0.6 260 0.5 Greater than 80% — — 171 171 0.3 166 0.3 Total $ 46,774 $ 2,091 $ 684 $ 49,549 100 % $ 50,573 100 % December 31, 2016 Loan-to-value ratios: Less than 65% $ 41,811 $ 1,307 $ 874 $ 43,992 91.6 % $ 44,459 91.8 % 65% to 75% 3,335 — 221 3,556 7.4 3,488 7.2 76% to 80% 229 — — 229 0.5 215 0.5 Greater than 80% 142 41 75 258 0.5 250 0.5 Total $ 45,517 $ 1,348 $ 1,170 $ 48,035 100.0 % $ 48,412 100.0 % Credit Quality of Agricultural Mortgage Loans The credit quality of agricultural mortgage loans was as follows at: June 30, 2017 December 31, 2016 Recorded Investment % of Total Recorded Investment % of Total (Dollars in millions) Loan-to-value ratios: Less than 65% $ 14,131 95.0 % $ 13,872 96.0 % 65% to 75% 606 4.1 479 3.3 76% to 80% 127 0.8 17 0.1 Greater than 80% 13 0.1 88 0.6 Total $ 14,877 100.0 % $ 14,456 100.0 % The estimated fair value of agricultural mortgage loans was $15.1 billion and $14.7 billion at June 30, 2017 and December 31, 2016 , respectively. Credit Quality of Residential Mortgage Loans The credit quality of residential mortgage loans was as follows at: June 30, 2017 December 31, 2016 Recorded Investment % of Total Recorded Investment % of Total (Dollars in millions) Performance indicators: Performing $ 12,332 96.6 % $ 11,304 96.6 % Nonperforming 432 3.4 392 3.4 Total $ 12,764 100.0 % $ 11,696 100.0 % The estimated fair value of residential mortgage loans was $13.2 billion and $12.1 billion at June 30, 2017 and December 31, 2016 , respectively. Past Due and Nonaccrual Mortgage Loans The Company has a high quality, well performing mortgage loan portfolio, with 99% of all mortgage loans classified as performing at both June 30, 2017 and December 31, 2016 . The Company defines delinquency consistent with industry practice, when mortgage loans are past due as follows: commercial and residential mortgage loans — 60 days and agricultural mortgage loans — 90 days. The past due and nonaccrual mortgage loans at recorded investment, prior to valuation allowances, by portfolio segment, were as follows at: Past Due Greater than 90 Days Past Due and Still Accruing Interest Nonaccrual June 30, 2017 December 31, 2016 June 30, 2017 December 31, 2016 June 30, 2017 December 31, 2016 (In millions) Commercial $ — $ 3 $ — $ 3 $ — $ — Agricultural 118 127 110 104 10 23 Residential 432 392 26 37 407 355 Total $ 550 $ 522 $ 136 $ 144 $ 417 $ 378 Mortgage Loans Modified in a Troubled Debt Restructuring During both the three months and six months ended June 30, 2017 and 2016 , the Company did not have a significant amount of mortgage loans modified in a troubled debt restructuring. Cash Equivalents The carrying value of cash equivalents, which includes securities and other investments with an original or remaining maturity of three months or less at the time of purchase, was $11.0 billion and $12.2 billion at June 30, 2017 and December 31, 2016 , respectively. Net Unrealized Investment Gains (Losses) Unrealized investment gains (losses) on fixed maturity and equity securities AFS and the effect on DAC, VOBA, deferred sales inducements (“DSI”), future policy benefits and the policyholder dividend obligation, that would result from the realization of the unrealized gains (losses), are included in net unrealized investment gains (losses) in AOCI. The components of net unrealized investment gains (losses), included in AOCI, were as follows: June 30, 2017 December 31, 2016 (In millions) Fixed maturity securities $ 25,818 $ 20,300 Fixed maturity securities with noncredit OTTI losses included in AOCI 37 8 Total fixed maturity securities 25,855 20,308 Equity securities 522 485 Derivatives 2,468 2,923 Other 169 23 Subtotal 29,014 23,739 Amounts allocated from: Future policy benefits (2,046 ) (1,114 ) DAC and VOBA related to noncredit OTTI losses recognized in AOCI (3 ) (3 ) DAC, VOBA and DSI (1,750 ) (1,430 ) Policyholder dividend obligation (2,237 ) (1,931 ) Subtotal (6,036 ) (4,478 ) Deferred income tax benefit (expense) related to noncredit OTTI losses recognized in AOCI (11 ) (1 ) Deferred income tax benefit (expense) (7,923 ) (6,623 ) Net unrealized investment gains (losses) 15,044 12,637 Net unrealized investment gains (losses) attributable to noncontrolling interests (6 ) (6 ) Net unrealized investment gains (losses) attributable to MetLife, Inc. $ 15,038 $ 12,631 The changes in net unrealized investment gains (losses) were as follows: Six Months (In millions) Balance, beginning of period $ 12,631 Fixed maturity securities on which noncredit OTTI losses have been recognized 29 Unrealized investment gains (losses) during the period 5,246 Unrealized investment gains (losses) relating to: Future policy benefits (932 ) DAC and VOBA related to noncredit OTTI losses recognized in AOCI — DAC, VOBA and DSI (320 ) Policyholder dividend obligation (306 ) Deferred income tax benefit (expense) related to noncredit OTTI losses recognized in AOCI (10 ) Deferred income tax benefit (expense) (1,300 ) Net unrealized investment gains (losses) 15,038 Net unrealized investment gains (losses) attributable to noncontrolling interests — Balance, end of period $ 15,038 Change in net unrealized investment gains (losses) $ 2,407 Change in net unrealized investment gains (losses) attributable to noncontrolling interests — Change in net unrealized investment gains (losses) attributable to MetLife, Inc. $ 2,407 Concentrations of Credit Risk Investments in any counterparty that were greater than 10% of the Company’s equity, other than the U.S. government and its agencies, were in fixed income securities of the Japanese government and its agencies with an estimated fair value of $26.5 billion and $24.9 billion at June 30, 2017 and December 31, 2016 , respectively. Securities Lending Elements of the securities lending program are presented below at: June 30, 2017 December 31, 2016 (In millions) Securities on loan: (1) Amortized cost $ 23,466 $ 24,692 Estimated fair value $ 25,787 $ 26,308 Cash collateral received from counterparties (2) $ 26,440 $ 26,755 Security collateral received from counterparties (3) $ 33 $ 46 Reinvestment portfolio — estimated fair value $ 26,652 $ 26,704 __________________ (1) Included within fixed maturity securities. (2) Included within payables for collateral under securities loaned and other transactions. (3) Security collateral received from counterparties may not be sold or re-pledged, unless the counterparty is in default, and is not reflected on the consolidated financial statements. The cash collateral liability by loaned security type and remaining tenor of the agreements was as follows at: June 30, 2017 December 31, 2016 Remaining Tenor of Securities Lending Agreements Remaining Tenor of Securities Lending Agreements Open (1) 1 Month or Less 1 to 6 Months Total Open (1) 1 Month or Less 1 to 6 Months Total (In millions) Cash collateral liability by loaned security type: U.S. government and agency $ 6,197 $ 12,510 $ 6,783 $ 25,490 $ 6,608 $ 8,403 $ 10,125 $ 25,136 Foreign government — 694 — 694 — 620 144 764 U.S. corporate — — — — — 523 — 523 Agency RMBS — 256 — 256 — — 274 274 Foreign corporate — — — — — 58 — 58 Total $ 6,197 $ 13,460 $ 6,783 $ 26,440 $ 6,608 $ 9,604 $ 10,543 $ 26,755 __________________ (1) The related loaned security could be returned to the Company on the next business day which would require the Company to immediately return the cash collateral. If the Company is required to return significant amounts of cash collateral on short notice and is forced to sell securities to meet the return obligation, it may have difficulty selling such collateral that is invested in securities in a timely manner, be forced to sell securities in a volatile or illiquid market for less than what otherwise would have been realized under normal market conditions, or both. The estimated fair value of the securities on loan related to the cash collateral on open at June 30, 2017 was $6.0 billion , all of which were U.S. government and agency securities which, if put back to the Company, could be immediately sold to satisfy the cash requirement. The reinvestment portfolio acquired with the cash collateral consisted principally of fixed maturity securities (including agency RMBS, ABS and U.S. government and agency securities), short-term investments and cash equivalents, with 65% invested in agency RMBS, short-term investments, cash equivalents, U.S. government and agency securities or held in cash. If the securities on loan or the reinvestment portfolio become less liquid, the Company has the liquidity resources of most of its general account available to meet any potential cash demands when securities on loan are put back to the Company. Repurchase Agreements Elements of the short-term repurchase agreements are presented below at: June 30, 2017 December 31, 2016 (In millions) Securities on loan: (1) Amortized cost $ 1,836 $ 98 Estimated fair value $ 1,982 $ 113 Cash collateral received from counterparties (2) $ 1,951 $ 102 Reinvestment portfolio — estimated fair value $ 1,963 $ 100 __________________ (1) Included within fixed maturity securities. (2) Included within payables for collateral under securities loaned and other transactions and other liabilities. The cash collateral liability by loaned security type and remaining tenor of the agreements was as follows at: June 30, 2017 December 31, 2016 Remaining Tenor of Repurchase Agreements Remaining Tenor of Repurchase Agreements 1 Month or Less 1 to 6 Months Total 1 Month or Less 1 to 6 Months Total (In millions) Cash collateral liability by loaned security type: U.S. government and agency $ 1,855 $ — $ 1,855 $ 5 $ — $ 5 Foreign government and corporate 44 52 96 46 51 97 Total $ 1,899 $ 52 $ 1,951 $ 51 $ 51 $ 102 The reinvestment portfolio acquired with the cash collateral consisted principally of fixed maturity securities (including agency RMBS, ABS, and U.S. government and agency securities), short-term investments and cash equivalents, with 65% invested in agency RMBS, short-term investments, U.S. government and agency securities and cash equivalents, or held in cash. If the securities on loan or the reinvestment portfolio become less liquid, the Company has the liquidity resources of most of its general account available to meet any potential cash demands when securities on loan are put back to the Company. Invested Assets on Deposit, Held in Trust and Pledged as Collateral Invested assets on deposit, held in trust and pledged as collateral are presented below at estimated fair value for all asset classes, except mortgage loans, which are presented at carrying value, at: June 30, 2017 December 31, 2016 (In millions) Invested assets on deposit (regulatory deposits) $ 9,168 $ 9,573 Invested assets held in trust (collateral financing arrangements and reinsurance agreements) 6,481 11,111 Invested assets pledged as collateral 27,152 27,431 Total invested assets on deposit, held in trust and pledged as collateral $ 42,801 $ 48,115 __________________ The Company has assets held in trust and pledged invested assets in connection with various agreements and transactions, including funding agreements (see Notes 4 and 12 of the Notes to the Consolidated Financial Statements included in the 2016 Annual Report), collateral financing arrangements (see Note 13 of the Notes to the Consolidated Financial Statements included in the 2016 Annual Report) and derivative transactions (see Note 7 ). Amounts in the table above include invested assets, and cash and cash equivalents. See Note 3 for information on the termination of the MRSC collateral financing arrangement. See “— Securities Lending” and “— Repurchase Agreements” for information regarding securities on loan and Note 5 for information regarding investments designated to the closed block. Variable Interest Entities The Company has invested in legal entities that are VIEs. In certain instances, the Company holds both the power to direct the most significant activities of the entity, as well as an economic interest in the entity and, as such, is deemed to be the primary beneficiary or consolidator of the entity. The determination of the VIE’s primary beneficiary requires an evaluation of the contractual and implied rights and obligations associated with each party’s relationship with or involvement in the entity, an estimate of the entity’s expected losses and expected residual returns and the allocation of such estimates to each party involved in the entity. Consolidated VIEs Creditors or beneficial interest holders of VIEs where the Company is the primary beneficiary have no recourse to the general credit of the Company, as the Company’s obligation to the VIEs is limited to the amount of its committed investment. The following table presents the total assets and total liabilities relating to investment-related VIEs for which the Company has concluded that it is the primary beneficiary and which are consolidated at: June 30, 2017 December 31, 2016 Total Total Total Total (In millions) MRSC (collateral financing arrangement) (1) $ — $ — $ 3,422 $ — CSEs (assets (primarily loans) and liabilities (primarily debt)) (2) 136 28 146 35 Other investments (3) 49 — 50 — Total $ 185 $ 28 $ 3,618 $ 35 __________________ (1) See Note 13 of the Notes to the Consolidated Financial Statements included in the 2016 Annual Report for a description of the MRSC collateral financing arrangement. This arrangement was terminated in April 2017. See Note 3 for information regarding the arrangement and disbursement of related assets. These assets historically consisted of fixed maturity securities, short-term investments and cash equivalents, but were transitioned into short-term investments and cash equivalents prior to termination of the arrangement. (2) The Company consolidates entities that are structured as CMBS and as collateralized debt obligations. The assets of these entities can only be used to settle their respective liabilities, and under no circumstances is the Company liable for any principal or interest shortfalls should any arise. (3) Other investments is comprised of other invested assets and other limited partnership interests. Unconsolidated VIEs The carrying amount and maximum exposure to loss relating to VIEs in which the Company holds a significant variable interest but is not the primary beneficiary and which have not been consolidated were as follows at: June 30, 2017 December 31, 2016 Carrying Maximum Carrying Maximum (In millions) Fixed maturity securities AFS: Structured Securities (2) $ 61,218 $ 61,218 $ 59,773 $ 59,773 U.S. and foreign corporate 2,788 2,788 2,845 2,845 Other limited partnership interests 6,344 12,136 6,208 11,282 Other invested assets 2,302 2,762 2,261 2,837 Other (3) 382 400 252 271 Total $ 73,034 $ 79,304 $ 71,339 $ 77,008 __________________ (1) The maximum exposure to loss relating to fixed maturity securities AFS and equity securities AFS is equal to their carrying amounts or the carrying amounts of retained interests. The maximum exposure to loss relating to other limited partnership interests, mortgage loans and real estate joint ventures is equal to the carrying amounts plus any unfunded commitments. For certain of its investments in other invested assets, the Company’s return is in the form of income tax credits which are guaranteed by creditworthy third parties. For such investments, the maximum exposure to loss is equal to the carrying amounts plus any unfunded commitments, reduced by income tax credits guaranteed by third parties of $137 million and $150 million at June 30, 2017 and December 31, 2016 , respectively. Such a maximum loss would be expected to occur only upon bankruptcy of the issuer or investee. (2) For these variable interests, the Company’s involvement is limited to that of a passive investor in mortgage-backed or asset-backed securities issued by trusts that do not have substantial equity. (3) Other is primarily comprised of common stock and real estate joint ventures. As described in Note 14 , the Company makes commitments to fund partnership investments in the normal course of business. Excluding these commitments, the Company did not provide financial or other support to investees designated as VIEs during both the six months ended June 30, 2017 and 2016 . Net Investment Income The components of net investment income were as follows: Three Months Six Months 2017 2016 2017 2016 (In millions) Investment income: Fixed maturity securities $ 3,431 $ 3,564 $ 6,851 $ 7,218 Equity securities 35 33 69 70 FVO securities — FVO general account securities (1) 16 10 45 16 Mortgage loans 869 851 1,714 1,658 Policy loans 146 147 291 296 Real estate and real estate joint ventures 184 149 349 306 Other limited partnership interests 243 120 540 166 Cash, cash equivalents and short-term investments 67 43 126 83 Operating joint ventures 5 11 7 23 Other 57 51 136 92 Subtotal 5,053 4,979 10,128 9,928 Less: Investment expenses 310 285 607 581 Subtotal, net 4,743 4,694 9,521 9,347 FVO securities — FVO contractholder-directed unit-linked investments (1) 214 191 630 94 FVO CSEs — interest income — commercial mortgage loans 2 2 4 5 Subtotal 216 193 634 99 Net investment income $ 4,959 $ 4,887 $ 10,155 $ 9,446 __________________ (1) Changes in estimated fair value subsequent to purchase for securities still held as of the end of the respective periods included in net investment income were $119 million and $449 million for the three months and six months ended June 30, 2017 , respectively, and $79 million and ($121) million for the three months and six months ended June 30, 2016 , respectively. The amounts for the three months and six months ended June 30, 2016 included $7 million and $3 million , respectively, related to actively traded securities. FVO securities are primarily comprised of securities for which the FVO has been elected. FVO securities are primarily comprised of contractholder-directed investments supporting unit-linked variable annuity type liabilities which do not qualify as separate accounts. The remainder is comprised of FVO general account securities and FVO securities held by CSEs. The Company previously maintained a trading securities portfolio, principally invested in fixed maturity securities. In June 2016, the Company commenced a reinvestment of this portfolio into other asset classes and, at June 30, 2017 , the Company no longer held any actively traded securities. See “— Variable Interest Entities” for discussion of CSEs. Net Investment Gains (Losses) Components of Net Investment Gains (Losses) The components of net investment gains (losses) were as follows: Three Months Six Months 2017 2016 2017 2016 (In millions) Total gains (losses) on fixed maturity securities: Total OTTI losses recognized — by sector and industry: U.S. and foreign corporate securities — by industry: Industrial $ — $ (8 ) $ — $ (79 ) Communications — — — (3 ) Total U.S. and foreign corporate securities — (8 ) — (82 ) RMBS — (4 ) — (8 ) ABS — (2 ) — (2 ) State and political subdivision (3 ) — (3 ) — OTTI losses on fixed maturity securities recognized in earnings (3 ) (14 ) (3 ) (92 ) Fixed maturity securities — net gains (losses) on sales and disposals 45 165 5 263 Total gains (losses) on fixed maturity securities 42 151 2 171 Total gains (losses) on equity securities: Total OTTI losses recognized — by sector: Common stock (5 ) (16 ) (12 ) (67 ) Non-redeemable preferred stock — — (1 ) — OTTI losses on equity securities recognized in earnings (5 ) (16 ) (13 ) (67 ) Equity securities — net gains (losses) on sales and disposals 7 13 50 19 Total gains (losses) on equity securities 2 (3 ) 37 (48 ) Mortgage loans (16 ) (98 ) (31 ) (162 ) Real estate and real estate joint ventures 271 45 270 47 Other limited partnership interests (12 ) (14 ) (29 ) (41 ) Other (69 ) (57 ) (127 ) (75 ) Subtotal 218 24 122 (108 ) FVO CSEs: Commercial mortgage loans — (1 ) (1 ) — Securities — — — 1 Long-term debt — related to commercial mortgage loans (1 ) — — — Non-investment portfolio gains (losses) (113 ) 243 (9 ) 388 Subtotal (114 ) 242 (10 ) 389 Total net investment gains (losses) $ 104 $ 266 $ 112 $ 281 See “— Variable Interest Entities” for discussion of CSEs. Gains (losses) from foreign currency transactions included within net investment gains (losses) were ($117) million and ($68) million for the three months and six months ended June 30, 2017 , respectively, and $289 million and $368 million for the three months and six months ende

Derivatives

Derivatives	6 Months Ended
	Jun. 30, 2017
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivatives	7. Derivatives Accounting for Derivatives Freestanding Derivatives Freestanding derivatives are carried on the Company’s balance sheet either as assets within other invested assets or as liabilities within other liabilities at estimated fair value. The Company does not offset the estimated fair value amounts recognized for derivatives executed with the same counterparty under the same master netting agreement. Accruals on derivatives are generally recorded in accrued investment income or within other liabilities. However, accruals that are not scheduled to settle within one year are included with the derivatives carrying value in other invested assets or other liabilities. If a derivative is not designated as an accounting hedge or its use in managing risk does not qualify for hedge accounting, changes in the estimated fair value of the derivative are reported in net derivative gains (losses) except as follows: Statement of Operations Presentation: Derivative: Policyholder benefits and claims • Economic hedges of variable annuity guarantees included in future policy benefits Net investment income • Economic hedges of equity method investments in joint ventures • All derivatives held in relation to trading portfolios • Derivatives held within contractholder-directed unit-linked investments Hedge Accounting To qualify for hedge accounting, at the inception of the hedging relationship, the Company formally documents its risk management objective and strategy for undertaking the hedging transaction, as well as its designation of the hedge. Hedge designation and financial statement presentation of changes in estimated fair value of the hedging derivatives are as follows: • Fair value hedge (a hedge of the estimated fair value of a recognized asset or liability) - in net derivative gains (losses), consistent with the change in estimated fair value of the hedged item attributable to the designated risk being hedged. • Cash flow hedge (a hedge of a forecasted transaction or of the variability of cash flows to be received or paid related to a recognized asset or liability) - effectiveness in OCI (deferred gains or losses on the derivative are reclassified into the statement of operations when the Company’s earnings are affected by the variability in cash flows of the hedged item); ineffectiveness in net derivative gains (losses). • Net investment in a foreign operation hedge - effectiveness in OCI, consistent with the translation adjustment for the hedged net investment in the foreign operation; ineffectiveness in net derivative gains (losses). The changes in estimated fair values of the hedging derivatives are exclusive of any accruals that are separately reported on the statement of operations within interest income or interest expense to match the location of the hedged item. Accruals on derivatives in net investment hedges are recognized in OCI. In its hedge documentation, the Company sets forth how the hedging instrument is expected to hedge the designated risks related to the hedged item and sets forth the method that will be used to retrospectively and prospectively assess the hedging instrument’s effectiveness and the method that will be used to measure ineffectiveness. A derivative designated as a hedging instrument must be assessed as being highly effective in offsetting the designated risk of the hedged item. Hedge effectiveness is formally assessed at inception and at least quarterly throughout the life of the designated hedging relationship. Assessments of hedge effectiveness and measurements of ineffectiveness are also subject to interpretation and estimation and different interpretations or estimates may have a material effect on the amount reported in net income. The Company discontinues hedge accounting prospectively when: (i) it is determined that the derivative is no longer highly effective in offsetting changes in the estimated fair value or cash flows of a hedged item; (ii) the derivative expires, is sold, terminated, or exercised; (iii) it is no longer probable that the hedged forecasted transaction will occur; or (iv) the derivative is de-designated as a hedging instrument. When hedge accounting is discontinued because it is determined that the derivative is not highly effective in offsetting changes in the estimated fair value or cash flows of a hedged item, the derivative continues to be carried on the balance sheet at its estimated fair value, with changes in estimated fair value recognized in net derivative gains (losses). The carrying value of the hedged recognized asset or liability under a fair value hedge is no longer adjusted for changes in its estimated fair value due to the hedged risk, and the cumulative adjustment to its carrying value is amortized into income over the remaining life of the hedged item. Provided the hedged forecasted transaction is still probable of occurrence, the changes in estimated fair value of derivatives recorded in OCI related to discontinued cash flow hedges are released into the statement of operations when the Company’s earnings are affected by the variability in cash flows of the hedged item. When hedge accounting is discontinued because it is no longer probable that the forecasted transactions will occur on the anticipated date or within two months of that date, the derivative continues to be carried on the balance sheet at its estimated fair value, with changes in estimated fair value recognized currently in net derivative gains (losses). Deferred gains and losses of a derivative recorded in OCI pursuant to the discontinued cash flow hedge of a forecasted transaction that is no longer probable are recognized immediately in net derivative gains (losses). In all other situations in which hedge accounting is discontinued, the derivative is carried at its estimated fair value on the balance sheet, with changes in its estimated fair value recognized in the current period as net derivative gains (losses). Embedded Derivatives The Company sells variable annuities and issues certain insurance products and investment contracts and is a party to certain reinsurance agreements that have embedded derivatives. The Company assesses each identified embedded derivative to determine whether it is required to be bifurcated. The embedded derivative is bifurcated from the host contract and accounted for as a freestanding derivative if: • the combined instrument is not accounted for in its entirety at estimated fair value with changes in estimated fair value recorded in earnings; • the terms of the embedded derivative are not clearly and closely related to the economic characteristics of the host contract; and • a separate instrument with the same terms as the embedded derivative would qualify as a derivative instrument. Such embedded derivatives are carried on the balance sheet at estimated fair value with the host contract and changes in their estimated fair value are generally reported in net derivative gains (losses), except for those in policyholder benefits and claims related to ceded reinsurance of GMIB. If the Company is unable to properly identify and measure an embedded derivative for separation from its host contract, the entire contract is carried on the balance sheet at estimated fair value, with changes in estimated fair value recognized in the current period in net investment gains (losses) or net investment income. Additionally, the Company may elect to carry an entire contract on the balance sheet at estimated fair value, with changes in estimated fair value recognized in the current period in net investment gains (losses) or net investment income if that contract contains an embedded derivative that requires bifurcation. At inception, the Company attributes to the embedded derivative a portion of the projected future guarantee fees to be collected from the policyholder equal to the present value of projected future guaranteed benefits. Any additional fees represent “excess” fees and are reported in universal life and investment-type product policy fees. See Note 8 for information about the fair value hierarchy for derivatives. Derivative Strategies The Company is exposed to various risks relating to its ongoing business operations, including interest rate, foreign currency exchange rate, credit and equity market. The Company uses a variety of strategies to manage these risks, including the use of derivatives. Derivatives are financial instruments with values derived from interest rates, foreign currency exchange rates, credit spreads and/or other financial indices. Derivatives may be exchange-traded or contracted in the over-the-counter (“OTC”) market. Certain of the Company’s OTC derivatives are cleared and settled through central clearing counterparties (“OTC-cleared”), while others are bilateral contracts between two counterparties (“OTC-bilateral”). The types of derivatives the Company uses include swaps, forwards, futures and option contracts. To a lesser extent, the Company uses credit default swaps and structured interest rate swaps to synthetically replicate investment risks and returns which are not readily available in the cash markets. Interest Rate Derivatives The Company uses a variety of interest rate derivatives to reduce its exposure to changes in interest rates, including interest rate swaps, interest rate total return swaps, caps, floors, swaptions, futures and forwards. Interest rate swaps are used by the Company primarily to reduce market risks from changes in interest rates and to alter interest rate exposure arising from mismatches between assets and liabilities (duration mismatches). In an interest rate swap, the Company agrees with another party to exchange, at specified intervals, the difference between fixed rate and floating rate interest amounts as calculated by reference to an agreed notional amount. The Company utilizes interest rate swaps in fair value, cash flow and nonqualifying hedging relationships. The Company uses structured interest rate swaps to synthetically create investments that are either more expensive to acquire or otherwise unavailable in the cash markets. These transactions are a combination of a derivative and a cash instrument such as a U.S. government and agency, or other fixed maturity security. Structured interest rate swaps are included in interest rate swaps and are not designated as hedging instruments. Interest rate total return swaps are swaps whereby the Company agrees with another party to exchange, at specified intervals, the difference between the economic risk and reward of an asset or a market index and the London Interbank Offered Rate (“LIBOR”), calculated by reference to an agreed notional amount. No cash is exchanged at the outset of the contract. Cash is paid and received over the life of the contract based on the terms of the swap. These transactions are entered into pursuant to master agreements that provide for a single net payment to be made by the counterparty at each due date. Interest rate total return swaps are used by the Company to reduce market risks from changes in interest rates and to alter interest rate exposure arising from mismatches between assets and liabilities (duration mismatches). The Company utilizes interest rate total return swaps in nonqualifying hedging relationships. The Company purchases interest rate caps and floors primarily to protect its floating rate liabilities against rises in interest rates above a specified level, and against interest rate exposure arising from mismatches between assets and liabilities, as well as to protect its minimum rate guarantee liabilities against declines in interest rates below a specified level, respectively. In certain instances, the Company locks in the economic impact of existing purchased caps and floors by entering into offsetting written caps and floors. The Company utilizes interest rate caps and floors in nonqualifying hedging relationships. In exchange-traded interest rate (Treasury and swap) futures transactions, the Company agrees to purchase or sell a specified number of contracts, the value of which is determined by the different classes of interest rate securities, and to post variation margin on a daily basis in an amount equal to the difference in the daily market values of those contracts. The Company enters into exchange-traded futures with regulated futures commission merchants that are members of the exchange. Exchange-traded interest rate (Treasury and swap) futures are used primarily to hedge mismatches between the duration of assets in a portfolio and the duration of liabilities supported by those assets, to hedge against changes in value of securities the Company owns or anticipates acquiring, to hedge against changes in interest rates on anticipated liability issuances by replicating Treasury or swap curve performance, and to hedge minimum guarantees embedded in certain variable annuity products offered by the Company. The Company utilizes exchange-traded interest rate futures in nonqualifying hedging relationships. Swaptions are used by the Company to hedge interest rate risk associated with the Company’s long-term liabilities and invested assets. A swaption is an option to enter into a swap with a forward starting effective date. In certain instances, the Company locks in the economic impact of existing purchased swaptions by entering into offsetting written swaptions. The Company pays a premium for purchased swaptions and receives a premium for written swaptions. The Company utilizes swaptions in nonqualifying hedging relationships. Swaptions are included in interest rate options. The Company enters into interest rate forwards to buy and sell securities. The price is agreed upon at the time of the contract and payment for such a contract is made at a specified future date. The Company utilizes interest rate forwards in cash flow and nonqualifying hedging relationships. Foreign Currency Exchange Rate Derivatives The Company uses foreign currency exchange rate derivatives, including foreign currency swaps, foreign currency forwards, currency options and exchange-traded currency futures, to reduce the risk from fluctuations in foreign currency exchange rates associated with its assets and liabilities denominated in foreign currencies. The Company also uses foreign currency derivatives to hedge the foreign currency exchange rate risk associated with certain of its net investments in foreign operations. In a foreign currency swap transaction, the Company agrees with another party to exchange, at specified intervals, the difference between one currency and another at a fixed exchange rate, generally set at inception, calculated by reference to an agreed upon notional amount. The notional amount of each currency is exchanged at the inception and termination of the currency swap by each party. The Company utilizes foreign currency swaps in fair value, cash flow and nonqualifying hedging relationships. In a foreign currency forward transaction, the Company agrees with another party to deliver a specified amount of an identified currency at a specified future date. The price is agreed upon at the time of the contract and payment for such a contract is made at the specified future date. The Company utilizes foreign currency forwards in fair value, net investment in foreign operations and nonqualifying hedging relationships. The Company enters into currency options that give it the right, but not the obligation, to sell the foreign currency amount in exchange for a functional currency amount within a limited time at a contracted price. The contracts may also be net settled in cash, based on differentials in the foreign currency exchange rate and the strike price. The Company uses currency options to hedge against the foreign currency exposure inherent in certain of its variable annuity products. The Company also uses currency options as an economic hedge of foreign currency exposure related to the Company’s international subsidiaries. The Company utilizes currency options in net investment in foreign operations and nonqualifying hedging relationships. To a lesser extent, the Company uses exchange-traded currency futures to hedge currency mismatches between assets and liabilities, and to hedge minimum guarantees embedded in certain variable annuity products offered by the Company. The Company utilizes exchange-traded currency futures in nonqualifying hedging relationships. Credit Derivatives The Company enters into purchased credit default swaps to hedge against credit-related changes in the value of its investments. In a credit default swap transaction, the Company agrees with another party to pay, at specified intervals, a premium to hedge credit risk. If a credit event occurs, as defined by the contract, the contract may be cash settled or it may be settled gross by the delivery of par quantities of the referenced investment equal to the specified swap notional amount in exchange for the payment of cash amounts by the counterparty equal to the par value of the investment surrendered. Credit events vary by type of issuer but typically include bankruptcy, failure to pay debt obligations, repudiation, moratorium, involuntary restructuring or governmental intervention. In each case, payout on a credit default swap is triggered only after the Credit Derivatives Determinations Committee of the International Swaps and Derivatives Association, Inc. (“ISDA”) deems that a credit event has occurred. The Company utilizes credit default swaps in nonqualifying hedging relationships. The Company enters into written credit default swaps to synthetically create credit investments that are either more expensive to acquire or otherwise unavailable in the cash markets. These transactions are a combination of a derivative and one or more cash instruments, such as U.S. government and agency securities, or other fixed maturity securities. These credit default swaps are not designated as hedging instruments. The Company enters into forwards to lock in the price to be paid for forward purchases of certain securities. The price is agreed upon at the time of the contract and payment for the contract is made at a specified future date. When the primary purpose of entering into these transactions is to hedge against the risk of changes in purchase price due to changes in credit spreads, the Company designates these transactions as credit forwards. The Company utilizes credit forwards in cash flow hedging relationships. Equity Derivatives The Company uses a variety of equity derivatives to reduce its exposure to equity market risk, including equity index options, equity variance swaps, exchange-traded equity futures and equity total return swaps. Equity index options are used by the Company primarily to hedge minimum guarantees embedded in certain variable annuity products offered by the Company. To hedge against adverse changes in equity indices, the Company enters into contracts to sell the equity index within a limited time at a contracted price. The contracts will be net settled in cash based on differentials in the indices at the time of exercise and the strike price. Certain of these contracts may also contain settlement provisions linked to interest rates. In certain instances, the Company may enter into a combination of transactions to hedge adverse changes in equity indices within a pre-determined range through the purchase and sale of options. The Company utilizes equity index options in nonqualifying hedging relationships. Equity variance swaps are used by the Company primarily to hedge minimum guarantees embedded in certain variable annuity products offered by the Company. In an equity variance swap, the Company agrees with another party to exchange amounts in the future, based on changes in equity volatility over a defined period. The Company utilizes equity variance swaps in nonqualifying hedging relationships. In exchange-traded equity futures transactions, the Company agrees to purchase or sell a specified number of contracts, the value of which is determined by the different classes of equity securities, and to post variation margin on a daily basis in an amount equal to the difference in the daily market values of those contracts. The Company enters into exchange-traded futures with regulated futures commission merchants that are members of the exchange. Exchange-traded equity futures are used primarily to hedge minimum guarantees embedded in certain variable annuity products offered by the Company. The Company utilizes exchange-traded equity futures in nonqualifying hedging relationships. In an equity total return swap, the Company agrees with another party to exchange, at specified intervals, the difference between the economic risk and reward of an asset or a market index and LIBOR, calculated by reference to an agreed notional amount. No cash is exchanged at the outset of the contract. Cash is paid and received over the life of the contract based on the terms of the swap. The Company uses equity total return swaps to hedge its equity market guarantees in certain of its insurance products. Equity total return swaps can be used as hedges or to synthetically create investments. The Company utilizes equity total return swaps in nonqualifying hedging relationships. Primary Risks Managed by Derivatives The following table presents the primary underlying risk exposure, gross notional amount, and estimated fair value of the Company’s derivatives, excluding embedded derivatives, held at: June 30, 2017 December 31, 2016 Primary Underlying Risk Exposure Gross Estimated Fair Value Gross Estimated Fair Value Assets Liabilities Assets Liabilities (In millions) Derivatives Designated as Hedging Instruments: Fair value hedges: Interest rate swaps Interest rate $ 4,347 $ 2,326 $ 5 $ 5,331 $ 2,262 $ 6 Foreign currency swaps Foreign currency exchange rate 632 48 — 1,221 34 224 Foreign currency forwards Foreign currency exchange rate 2,175 — 59 1,085 — 54 Subtotal 7,154 2,374 64 7,637 2,296 284 Cash flow hedges: Interest rate swaps Interest rate 3,886 331 16 2,085 332 34 Interest rate forwards Interest rate 3,542 — 210 4,032 — 370 Foreign currency swaps Foreign currency exchange rate 30,168 1,640 1,778 28,173 2,079 2,065 Subtotal 37,596 1,971 2,004 34,290 2,411 2,469 Foreign operations hedges: Foreign currency forwards Foreign currency exchange rate 1,932 7 51 1,394 47 5 Currency options Foreign currency exchange rate 8,236 34 114 8,878 148 45 Subtotal 10,168 41 165 10,272 195 50 Total qualifying hedges 54,918 4,386 2,233 52,199 4,902 2,803 Derivatives Not Designated or Not Qualifying as Hedging Instruments: Interest rate swaps Interest rate 82,022 3,396 1,465 81,524 6,017 3,328 Interest rate floors Interest rate 7,201 136 — 14,201 187 9 Interest rate caps Interest rate 81,560 72 2 90,400 137 2 Interest rate futures Interest rate 5,143 24 2 6,081 12 12 Interest rate options Interest rate 32,884 822 48 20,854 764 1 Interest rate forwards Interest rate 358 — 34 613 — 25 Interest rate total return swaps Interest rate 4,198 26 389 5,425 2 738 Synthetic GICs Interest rate 6,305 — — 5,566 — — Foreign currency swaps Foreign currency exchange rate 13,031 1,071 451 12,912 1,600 466 Foreign currency forwards Foreign currency exchange rate 17,206 103 572 15,580 126 977 Currency futures Foreign currency exchange rate 869 — 4 915 — — Currency options Foreign currency exchange rate 2,481 51 — 3,615 195 17 Credit default swaps — purchased Credit 1,955 8 42 2,038 14 40 Credit default swaps — written Credit 13,377 259 4 12,645 189 9 Equity futures Equity market 7,904 12 3 12,494 68 3 Equity index options Equity market 77,608 1,543 2,024 54,028 1,323 1,458 Equity variance swaps Equity market 23,231 266 866 23,157 223 756 Equity total return swaps Equity market 2,630 3 78 3,901 2 160 Total non-designated or nonqualifying derivatives 379,963 7,792 5,984 365,949 10,859 8,001 Total $ 434,881 $ 12,178 $ 8,217 $ 418,148 $ 15,761 $ 10,804 Based on gross notional amounts, a substantial portion of the Company’s derivatives was not designated or did not qualify as part of a hedging relationship at both June 30, 2017 and December 31, 2016 . The Company’s use of derivatives includes (i) derivatives that serve as macro hedges of the Company’s exposure to various risks and that generally do not qualify for hedge accounting due to the criteria required under the portfolio hedging rules; (ii) derivatives that economically hedge insurance liabilities that contain mortality or morbidity risk and that generally do not qualify for hedge accounting because the lack of these risks in the derivatives cannot support an expectation of a highly effective hedging relationship; (iii) derivatives that economically hedge embedded derivatives that do not qualify for hedge accounting because the changes in estimated fair value of the embedded derivatives are already recorded in net income; and (iv) written credit default swaps and interest rate swaps that are used to synthetically create investments and that do not qualify for hedge accounting because they do not involve a hedging relationship. For these nonqualified derivatives, changes in market factors can lead to the recognition of fair value changes on the statement of operations without an offsetting gain or loss recognized in earnings for the item being hedged. Net Derivative Gains (Losses) The components of net derivative gains (losses) were as follows: Three Months Six Months 2017 2016 2017 2016 (In millions) Freestanding derivatives and hedging gains (losses) (1) $ (506 ) $ 2,525 $ (2,010 ) $ 5,029 Embedded derivatives gains (losses) 69 (4,624 ) 647 (5,793 ) Total net derivative gains (losses) $ (437 ) $ (2,099 ) $ (1,363 ) $ (764 ) __________________ (1) Includes foreign currency transaction gains (losses) on hedged items in cash flow and nonqualifying hedging relationships, which are not presented elsewhere in this note. The following table presents earned income on derivatives: Three Months Six Months 2017 2016 2017 2016 (In millions) Qualifying hedges: Net investment income $ 76 $ 73 $ 157 $ 130 Interest credited to policyholder account balances (14 ) 1 (20 ) 7 Other expenses (2 ) (4 ) (5 ) (6 ) Nonqualifying hedges: Net investment income — (1 ) — (1 ) Net derivative gains (losses) 212 248 500 531 Policyholder benefits and claims 5 6 11 11 Total $ 277 $ 323 $ 643 $ 672 Nonqualifying Derivatives and Derivatives for Purposes Other Than Hedging The following table presents the amount and location of gains (losses) recognized in income for derivatives that were not designated or not qualifying as hedging instruments: Net Net Policyholder (In millions) Three Months Ended June 30, 2017 Interest rate derivatives $ 277 $ (2 ) $ (12 ) Foreign currency exchange rate derivatives (566 ) — 2 Credit derivatives — purchased (7 ) — — Credit derivatives — written 49 — — Equity derivatives (705 ) (2 ) (136 ) Total $ (952 ) $ (4 ) $ (146 ) Three Months Ended June 30, 2016 Interest rate derivatives $ 1,657 $ — $ 55 Foreign currency exchange rate derivatives 1,196 — (11 ) Credit derivatives — purchased (22 ) (10 ) — Credit derivatives — written 3 9 — Equity derivatives (213 ) (3 ) (65 ) Total $ 2,621 $ (4 ) $ (21 ) Six Months Ended June 30, 2017 Interest rate derivatives $ (382 ) $ — $ (11 ) Foreign currency exchange rate derivatives (223 ) — 2 Credit derivatives — purchased (15 ) — — Credit derivatives — written 87 — — Equity derivatives (1,998 ) (5 ) (392 ) Total $ (2,531 ) $ (5 ) $ (401 ) Six Months Ended June 30, 2016 Interest rate derivatives $ 3,629 $ — $ 97 Foreign currency exchange rate derivatives 1,719 — (12 ) Credit derivatives — purchased (27 ) — — Credit derivatives — written (3 ) — — Equity derivatives (260 ) (14 ) (33 ) Total $ 5,058 $ (14 ) $ 52 __________________ (1) Changes in estimated fair value related to economic hedges of equity method investments in joint ventures, derivatives held in relation to trading portfolios and derivatives held within contractholder-directed unit-linked investments. (2) Changes in estimated fair value related to economic hedges of variable annuity guarantees included in future policy benefits. Fair Value Hedges The Company designates and accounts for the following as fair value hedges when they have met the requirements of fair value hedging: (i) interest rate swaps to convert fixed rate assets and liabilities to floating rate assets and liabilities; (ii) foreign currency swaps to hedge the foreign currency fair value exposure of foreign currency denominated assets and liabilities; and (iii) foreign currency forwards to hedge the foreign currency fair value exposure of foreign currency denominated investments. The Company recognizes gains and losses on derivatives and the related hedged items in fair value hedges within net derivative gains (losses). The following table presents the amount of such net derivative gains (losses): Derivatives in Fair Value Hedging Relationships Hedged Items in Fair Value Hedging Relationships Net Derivative Gains (Losses) Recognized for Derivatives Net Derivative Gains (Losses) Recognized for Hedged Items Ineffectiveness Recognized in Net Derivative Gains (Losses) (In millions) Three Months Ended June 30, 2017 Interest rate swaps: Fixed maturity securities $ — $ (1 ) $ (1 ) Policyholder liabilities (1) 52 18 70 Foreign currency swaps: Foreign-denominated fixed maturity securities (2 ) 3 1 Foreign-denominated policyholder account balances (2) 45 (26 ) 19 Foreign currency forwards: Foreign-denominated fixed maturity securities (21 ) 19 (2 ) Total $ 74 $ 13 $ 87 Three Months Ended June 30, 2016 Interest rate swaps: Fixed maturity securities $ (3 ) $ — $ (3 ) Policyholder liabilities (1) 197 (200 ) (3 ) Foreign currency swaps: Foreign-denominated fixed maturity securities 7 (8 ) (1 ) Foreign-denominated policyholder account balances (2) (51 ) 48 (3 ) Foreign currency forwards: Foreign-denominated fixed maturity securities 137 (126 ) 11 Total $ 287 $ (286 ) $ 1 Six Months Ended June 30, 2017 Interest rate swaps: Fixed maturity securities $ 1 $ (2 ) $ (1 ) Policyholder liabilities (1) (1 ) 70 69 Foreign currency swaps: Foreign-denominated fixed maturity securities (5 ) 6 1 Foreign-denominated policyholder account balances (2) 46 (24 ) 22 Foreign currency forwards: Foreign-denominated fixed maturity securities 24 (22 ) 2 Total $ 65 $ 28 $ 93 Six Months Ended June 30, 2016 Interest rate swaps: Fixed maturity securities $ (11 ) $ 7 $ (4 ) Policyholder liabilities (1) 543 (548 ) (5 ) Foreign currency swaps: Foreign-denominated fixed maturity securities 6 (6 ) — Foreign-denominated policyholder account balances (2) (26 ) 23 (3 ) Foreign currency forwards: Foreign-denominated fixed maturity securities 276 (254 ) 22 Total $ 788 $ (778 ) $ 10 __________________ (1) Fixed rate liabilities reported in policyholder account balances or future policy benefits. (2) Fixed rate or floating rate liabilities. For the Company’s foreign currency forwards, the change in the estimated fair value of the derivative related to the changes in the difference between the spot price and the forward price is excluded from the assessment of hedge effectiveness. For all other derivatives, all components of each derivative’s gain or loss were included in the assessment of hedge effectiveness. For the three months and six months ended June 30, 2017 , the component of the change in estimated fair value of derivatives that was excluded from the assessment of hedge effectiveness was ($17) million and ($24) million , respectively. For the three months and six months ended June 30, 2016, the component of the change in estimated fair value of derivatives that was excluded from the assessment of hedge effectiveness was ($4) million and ($10) million , respectively. Cash Flow Hedges The Company designates and accounts for the following as cash flow hedges when they have met the requirements of cash flow hedging: (i) interest rate swaps to convert floating rate assets and liabilities to fixed rate assets and liabilities; (ii) foreign currency swaps to hedge the foreign currency cash flow exposure of foreign currency denominated assets and liabilities; (iii) interest rate forwards and credit forwards to lock in the price to be paid for forward purchases of investments; (iv) interest rate swaps and interest rate forwards to hedge the forecasted purchases of fixed-rate investments; and (v) interest rate swaps and interest rate forwards to hedge forecasted fixed-rate borrowings. In certain instances, the Company discontinued cash flow hedge accounting because the forecasted transactions were no longer probable of occurring. Because

Fair Value

Fair Value	6 Months Ended
	Jun. 30, 2017
Fair Value Disclosures [Abstract]
Fair Value Disclosures [Text Block]	8. Fair Value Considerable judgment is often required in interpreting market data to develop estimates of fair value, and the use of different assumptions or valuation methodologies may have a material effect on the estimated fair value amounts. Recurring Fair Value Measurements The assets and liabilities measured at estimated fair value on a recurring basis and their corresponding placement in the fair value hierarchy, including those items for which the Company has elected the FVO, are presented below at: June 30, 2017 Fair Value Hierarchy Level 1 Level 2 Level 3 Total (In millions) Assets Fixed maturity securities: U.S. corporate $ — $ 95,628 $ 6,971 $ 102,599 U.S. government and agency 31,342 28,537 — 59,879 Foreign government — 60,900 208 61,108 Foreign corporate — 53,457 7,017 60,474 RMBS 348 33,354 4,830 38,532 State and political subdivision — 16,254 — 16,254 ABS — 13,096 1,039 14,135 CMBS — 10,555 548 11,103 Total fixed maturity securities 31,690 311,781 20,613 364,084 Equity securities 1,640 1,174 601 3,415 FVO securities (1) 12,118 2,332 312 14,762 Short-term investments (2) 3,213 2,471 913 6,597 Mortgage loans: Residential mortgage loans — FVO — — 615 615 Commercial mortgage loans held by CSEs — FVO — 123 — 123 Total mortgage loans — 123 615 738 Other investments 80 101 — 181 Derivative assets: (3) Interest rate 24 7,083 26 7,133 Foreign currency exchange rate — 2,881 73 2,954 Credit — 220 47 267 Equity market 12 1,502 310 1,824 Total derivative assets 36 11,686 456 12,178 Embedded derivatives within asset host contracts (4) — — 388 388 Separate account assets (5) 88,537 230,947 971 320,455 Total assets $ 137,314 $ 560,615 $ 24,869 $ 722,798 Liabilities Derivative liabilities: (3) Interest rate $ 2 $ 1,570 $ 599 $ 2,171 Foreign currency exchange rate 4 2,973 52 3,029 Credit — 46 — 46 Equity market 3 2,095 873 2,971 Total derivative liabilities 9 6,684 1,524 8,217 Embedded derivatives within liability host contracts (4) — — 3,889 3,889 Separate account liabilities (5) — 11 6 17 Total liabilities $ 9 $ 6,695 $ 5,419 $ 12,123 December 31, 2016 Fair Value Hierarchy Level 1 Level 2 Level 3 Total (In millions) Assets Fixed maturity securities: U.S. corporate $ — $ 93,639 $ 7,214 $ 100,853 U.S. government and agency 31,153 26,370 — 57,523 Foreign government — 56,848 290 57,138 Foreign corporate — 50,344 6,713 57,057 RMBS — 31,896 5,097 36,993 State and political subdivision — 16,149 27 16,176 ABS — 12,624 1,253 13,877 CMBS — 10,757 515 11,272 Total fixed maturity securities 31,153 298,627 21,109 350,889 Equity securities 1,373 1,217 604 3,194 FVO securities (1) 11,123 2,513 287 13,923 Short-term investments (2) 4,808 2,436 47 7,291 Mortgage loans: Residential mortgage loans — FVO — — 566 566 Commercial mortgage loans held by CSEs — FVO — 136 — 136 Total mortgage loans — 136 566 702 Other investments 86 71 — 157 Derivative assets: (3) Interest rate 12 9,699 2 9,713 Foreign currency exchange rate — 4,149 80 4,229 Credit — 165 38 203 Equity market 68 1,249 299 1,616 Total derivative assets 80 15,262 419 15,761 Embedded derivatives within asset host contracts (4) — — 380 380 Separate account assets (5) 83,538 223,923 1,159 308,620 Total assets $ 132,161 $ 544,185 $ 24,571 $ 700,917 Liabilities Derivative liabilities: (3) Interest rate $ 12 $ 3,402 $ 1,111 $ 4,525 Foreign currency exchange rate — 3,799 54 3,853 Credit — 49 — 49 Equity market 3 1,604 770 2,377 Total derivative liabilities 15 8,854 1,935 10,804 Embedded derivatives within liability host contracts (4) — — 4,105 4,105 Separate account liabilities (5) — 16 7 23 Total liabilities $ 15 $ 8,870 $ 6,047 $ 14,932 __________________ (1) FVO securities at both June 30, 2017 and December 31, 2016 were comprised of over 90% FVO contractholder-directed unit-linked investments, with the remainder comprised of FVO general account securities and FVO securities held by CSEs. (2) Short-term investments as presented in the tables above differ from the amounts presented on the consolidated balance sheets because certain short-term investments are not measured at estimated fair value on a recurring basis. (3) Derivative assets are presented within other invested assets on the consolidated balance sheets and derivative liabilities are presented within other liabilities on the consolidated balance sheets. The amounts are presented gross in the tables above to reflect the presentation on the consolidated balance sheets, but are presented net for purposes of the rollforward in the Fair Value Measurements Using Significant Unobservable Inputs (Level 3) tables. (4) Embedded derivatives within asset host contracts are presented within premiums, reinsurance and other receivables and other invested assets on the consolidated balance sheets. Embedded derivatives within liability host contracts are presented within policyholder account balances, future policy benefits and other liabilities on the consolidated balance sheets. At June 30, 2017 and December 31, 2016 , debt and equity securities also included embedded derivatives of ($219) million and ($137) million , respectively. (5) Investment performance related to separate account assets is fully offset by corresponding amounts credited to contractholders whose liability is reflected within separate account liabilities. Separate account liabilities are set equal to the estimated fair value of separate account assets. Separate account liabilities presented in the tables above represent derivative liabilities. The following describes the valuation methodologies used to measure assets and liabilities at fair value. The description includes the valuation techniques and key inputs for each category of assets or liabilities that are classified within Level 2 and Level 3 of the fair value hierarchy. Investments Valuation Controls and Procedures On behalf of the Company’s Chief Investment Officer and Chief Financial Officer, a pricing and valuation committee that is independent of the trading and investing functions and comprised of senior management, provides oversight of control systems and valuation policies for securities, mortgage loans and derivatives. On a quarterly basis, this committee reviews and approves new transaction types and markets, ensures that observable market prices and market-based parameters are used for valuation, wherever possible, and determines that judgmental valuation adjustments, when applied, are based upon established policies and are applied consistently over time. This committee also provides oversight of the selection of independent third-party pricing providers and the controls and procedures to evaluate third-party pricing. Periodically, the Chief Accounting Officer reports to the Audit Committee of MetLife, Inc.’s Board of Directors regarding compliance with fair value accounting standards. The Company reviews its valuation methodologies on an ongoing basis and revises those methodologies when necessary based on changing market conditions. Assurance is gained on the overall reasonableness and consistent application of input assumptions, valuation methodologies and compliance with fair value accounting standards through controls designed to ensure valuations represent an exit price. Several controls are utilized, including certain monthly controls, which include, but are not limited to, analysis of portfolio returns to corresponding benchmark returns, comparing a sample of executed prices of securities sold to the fair value estimates, comparing fair value estimates to management’s knowledge of the current market, reviewing the bid/ask spreads to assess activity, comparing prices from multiple independent pricing services and ongoing due diligence to confirm that independent pricing services use market-based parameters. The process includes a determination of the observability of inputs used in estimated fair values received from independent pricing services or brokers by assessing whether these inputs can be corroborated by observable market data. The Company ensures that prices received from independent brokers, also referred to herein as “consensus pricing,” represent a reasonable estimate of fair value by considering such pricing relative to the Company’s knowledge of the current market dynamics and current pricing for similar financial instruments. While independent non-binding broker quotations are utilized, they are not used for a significant portion of the portfolio. For example, fixed maturity securities priced using independent non-binding broker quotations represent less than 1% of the total estimated fair value of fixed maturity securities and 4% of the total estimated fair value of Level 3 fixed maturity securities at June 30, 2017 . The Company also applies a formal process to challenge any prices received from independent pricing services that are not considered representative of estimated fair value. If prices received from independent pricing services are not considered reflective of market activity or representative of estimated fair value, independent non-binding broker quotations are obtained, or an internally developed valuation is prepared. Internally developed valuations of current estimated fair value, which reflect internal estimates of liquidity and nonperformance risks, compared with pricing received from the independent pricing services, did not produce material differences in the estimated fair values for the majority of the portfolio; accordingly, overrides were not material. This is, in part, because internal estimates of liquidity and nonperformance risks are generally based on available market evidence and estimates used by other market participants. In the absence of such market-based evidence, management’s best estimate is used. Securities, Short-term Investments and Other Investments When available, the estimated fair value of these financial instruments is based on quoted prices in active markets that are readily and regularly obtainable. Generally, these are the most liquid of the Company’s securities holdings and valuation of these securities does not involve management’s judgment. When quoted prices in active markets are not available, the determination of estimated fair value is based on market standard valuation methodologies, giving priority to observable inputs. The significant inputs to the market standard valuation methodologies for certain types of securities with reasonable levels of price transparency are inputs that are observable in the market or can be derived principally from, or corroborated by, observable market data. When observable inputs are not available, the market standard valuation methodologies rely on inputs that are significant to the estimated fair value that are not observable in the market or cannot be derived principally from, or corroborated by, observable market data. These unobservable inputs can be based in large part on management’s judgment or estimation and cannot be supported by reference to market activity. Even though these inputs are unobservable, management believes they are consistent with what other market participants would use when pricing such securities and are considered appropriate given the circumstances. The estimated fair value of investments in certain separate accounts included in FVO contractholder-directed unit-linked investments, FVO securities held by CSEs and other investments is determined on a basis consistent with the methodologies described herein for securities. The valuation of most instruments listed below is determined using independent pricing sources, matrix pricing, discounted cash flow methodologies or other similar techniques that use either observable market inputs or unobservable inputs. Instrument Level 2 Observable Inputs Level 3 Unobservable Inputs Fixed Maturity Securities U.S. corporate and Foreign corporate securities Valuation Approaches: Principally the market and income approaches. Valuation Approaches: Principally the market approach. Key Inputs: Key Inputs: • quoted prices in markets that are not active • illiquidity premium • benchmark yields; spreads off benchmark yields; new issuances; issuer rating • delta spread adjustments to reflect specific credit-related issues • trades of identical or comparable securities; duration • credit spreads • Privately-placed securities are valued using the additional key inputs: • quoted prices in markets that are not active for identical or similar securities that are less liquid and based on lower levels of trading activity than securities classified in Level 2 • market yield curve; call provisions • observable prices and spreads for similar public or private securities that incorporate the credit quality and industry sector of the issuer • independent non-binding broker quotations • delta spread adjustments to reflect specific credit-related issues U.S. government and agency, Foreign government and State and political subdivision securities Valuation Approaches: Principally the market approach. Valuation Approaches: Principally the market approach. Key Inputs: Key Inputs: • quoted prices in markets that are not active • independent non-binding broker quotations • benchmark U.S. Treasury yield or other yields • quoted prices in markets that are not active for identical or similar securities that are less liquid and based on lower levels of trading activity than securities classified in Level 2 • the spread off the U.S. Treasury yield curve for the identical security • issuer ratings and issuer spreads; broker-dealer quotes • credit spreads • comparable securities that are actively traded Structured Securities Valuation Approaches: Principally the market and income approaches. Valuation Approaches: Principally the market and income approaches. Key Inputs: Key Inputs: • quoted prices in markets that are not active • credit spreads • spreads for actively traded securities; spreads off benchmark yields • quoted prices in markets that are not active for identical or similar securities that are less liquid and based on lower levels of trading activity than securities classified in Level 2 • expected prepayment speeds and volumes • current and forecasted loss severity; ratings; geographic region • independent non-binding broker quotations • weighted average coupon and weighted average maturity • average delinquency rates; debt-service coverage ratios • issuance-specific information, including, but not limited to: • collateral type; structure of the security; vintage of the loans • payment terms of the underlying assets • payment priority within the tranche; deal performance Instrument Level 2 Observable Inputs Level 3 Unobservable Inputs Equity Securities Valuation Approaches: Principally the market approach. Valuation Approaches: Principally the market and income approaches. Key Input: Key Inputs: • quoted prices in markets that are not considered active • credit ratings; issuance structures • quoted prices in markets that are not active for identical or similar securities that are less liquid and based on lower levels of trading activity than securities classified in Level 2 • independent non-binding broker quotations FVO securities, Short-term investments, and Other investments • Contractholder-directed unit-linked investments include mutual fund interests without readily determinable fair values given prices are not published publicly. Valuation of these mutual funds is based upon quoted prices or reported net asset value (“NAV”) provided by the fund managers, which were based on observable inputs. • FVO securities and short-term investments are of a similar nature and class to the fixed maturity and equity securities described above; accordingly, the valuation approaches and unobservable inputs used in their valuation are also similar to those described above. • All other investments are of a similar nature and class to the fixed maturity and equity securities described above; accordingly, the valuation approaches and observable inputs used in their valuation are also similar to those described above. Mortgage Loans — FVO Residential mortgage loans — FVO • N/A Valuation Approaches: Principally the market approach. Valuation Techniques and Key Inputs: These investments are based primarily on matrix pricing or other similar techniques that utilize inputs from mortgage servicers that are unobservable or cannot be derived principally from, or corroborated by, observable market data. Commercial mortgage loans held by CSEs — FVO Valuation Approaches: Principally the market approach. • N/A Key Input: • quoted securitization market price determined principally by independent pricing services using observable inputs Separate Account Assets and Separate Account Liabilities (1) Mutual funds and hedge funds without readily determinable fair values as prices are not published publicly Key Input: • N/A • quoted prices or reported NAV provided by the fund managers Other limited partnership interests • N/A • Valued giving consideration to the underlying holdings of the partnerships and by applying a premium or discount, if appropriate. Key Inputs: • liquidity; bid/ask spreads; performance record of the fund manager • other relevant variables that may impact the exit value of the particular partnership interest __________________ (1) Estimated fair value equals carrying value, based on the value of the underlying assets, including: mutual fund interests, fixed maturity securities, equity securities, derivatives, hedge funds, other limited partnership interests, short-term investments and cash and cash equivalents. Fixed maturity securities, equity securities, derivatives, short-term investments and cash and cash equivalents are similar in nature to the instruments described under “— Securities, Short-term Investments and Other Investments” and “— Derivatives — Freestanding Derivatives.” Derivatives The estimated fair value of derivatives is determined through the use of quoted market prices for exchange-traded derivatives, or through the use of pricing models for OTC-bilateral and OTC-cleared derivatives. The determination of estimated fair value, when quoted market values are not available, is based on market standard valuation methodologies and inputs that management believes are consistent with what other market participants would use when pricing such instruments. Derivative valuations can be affected by changes in interest rates, foreign currency exchange rates, financial indices, credit spreads, default risk, nonperformance risk, volatility, liquidity and changes in estimates and assumptions used in the pricing models. The valuation controls and procedures for derivatives are described in “— Investments.” The significant inputs to the pricing models for most OTC-bilateral and OTC-cleared derivatives are inputs that are observable in the market or can be derived principally from, or corroborated by, observable market data. Certain OTC-bilateral and OTC-cleared derivatives may rely on inputs that are significant to the estimated fair value that are not observable in the market or cannot be derived principally from, or corroborated by, observable market data. These unobservable inputs may involve significant management judgment or estimation. Even though unobservable, these inputs are based on assumptions deemed appropriate given the circumstances and management believes they are consistent with what other market participants would use when pricing such instruments. Most inputs for OTC-bilateral and OTC-cleared derivatives are mid-market inputs but, in certain cases, liquidity adjustments are made when they are deemed more representative of exit value. Market liquidity, as well as the use of different methodologies, assumptions and inputs, may have a material effect on the estimated fair values of the Company’s derivatives and could materially affect net income. The credit risk of both the counterparty and the Company are considered in determining the estimated fair value for all OTC-bilateral and OTC-cleared derivatives, and any potential credit adjustment is based on the net exposure by counterparty after taking into account the effects of netting agreements and collateral arrangements. The Company values its OTC-bilateral and OTC-cleared derivatives using standard swap curves which may include a spread to the risk-free rate, depending upon specific collateral arrangements. This credit spread is appropriate for those parties that execute trades at pricing levels consistent with similar collateral arrangements. As the Company and its significant derivative counterparties generally execute trades at such pricing levels and hold sufficient collateral, additional credit risk adjustments are not currently required in the valuation process. The Company’s ability to consistently execute at such pricing levels is in part due to the netting agreements and collateral arrangements that are in place with all of its significant derivative counterparties. An evaluation of the requirement to make additional credit risk adjustments is performed by the Company each reporting period. Freestanding Derivatives Level 2 Valuation Approaches and Key Inputs: This level includes all types of derivatives utilized by the Company with the exception of exchange-traded derivatives included within Level 1 and those derivatives with unobservable inputs as described in Level 3. Level 3 Valuation Approaches and Key Inputs: These valuation methodologies generally use the same inputs as described in the corresponding sections for Level 2 measurements of derivatives. However, these derivatives result in Level 3 classification because one or more of the significant inputs are not observable in the market or cannot be derived principally from, or corroborated by, observable market data. Freestanding derivatives are principally valued using the income approach. Valuations of non-option-based derivatives utilize present value techniques, whereas valuations of option-based derivatives utilize option pricing models. Key inputs are as follows: Instrument Interest Rate Foreign Currency Exchange Rate Credit Equity Market Inputs common to Level 2 and Level 3 by instrument type • swap yield curves • swap yield curves • swap yield curves • swap yield curves • basis curves • basis curves • credit curves • spot equity index levels • interest rate volatility (1) • currency spot rates • recovery rates • dividend yield curves • cross currency basis curves • equity volatility (1) • currency volatility (1) Level 3 • swap yield curves (2) • swap yield curves (2) • swap yield curves (2) • dividend yield curves (2) • basis curves (2) • basis curves (2) • credit curves (2) • equity volatility (1), (2) • interest rate volatility (1), (2) • cross currency basis curves (2) • credit spreads • correlation between model inputs (1) • repurchase rates • currency correlation • repurchase rates • currency volatility (1) • independent non-binding broker quotations __________________ (1) Option-based only. (2) Extrapolation beyond the observable limits of the curve(s). Embedded Derivatives Embedded derivatives principally include certain direct, assumed and ceded variable annuity guarantees, equity or bond indexed crediting rates within certain funding agreements and annuity contracts, and those related to funds withheld on ceded reinsurance agreements. Embedded derivatives are recorded at estimated fair value with changes in estimated fair value reported in net income. The Company issues certain variable annuity products with guaranteed minimum benefits. GMWBs, GMABs and certain GMIBs contain embedded derivatives, which are measured at estimated fair value separately from the host variable annuity contract, with changes in estimated fair value reported in net derivative gains (losses). These embedded derivatives are classified within policyholder account balances and future policy benefits on the consolidated balance sheets. The Company’s actuarial department calculates the fair value of these embedded derivatives, which are estimated as the present value of projected future benefits minus the present value of projected future fees using actuarial and capital market assumptions including expectations concerning policyholder behavior. The calculation is based on in-force business, and is performed using standard actuarial valuation software which projects future cash flows from the embedded derivative over multiple risk neutral stochastic scenarios using observable risk-free rates. Capital market assumptions, such as risk-free rates and implied volatilities, are based on market prices for publicly traded instruments to the extent that prices for such instruments are observable. Implied volatilities beyond the observable period are extrapolated based on observable implied volatilities and historical volatilities. Actuarial assumptions, including mortality, lapse, withdrawal and utilization, are unobservable and are reviewed at least annually based on actuarial studies of historical experience. The valuation of these guarantee liabilities includes nonperformance risk adjustments and adjustments for a risk margin related to non-capital market inputs. The nonperformance adjustment is determined by taking into consideration publicly available information relating to spreads in the secondary market for MetLife, Inc.’s debt, including related credit default swaps. These observable spreads are then adjusted, as necessary, to reflect the priority of these liabilities and the claims paying ability of the issuing insurance subsidiaries as compared to MetLife, Inc. Risk margins are established to capture the non-capital market risks of the instrument which represent the additional compensation a market participant would require to assume the risks related to the uncertainties of such actuarial assumptions as annuitization, premium persistency, partial withdrawal and surrenders. The establishment of risk margins requires the use of significant management judgment, including assumptions of the amount and cost of capital needed to cover the guarantees. These guarantees may be more costly than expected in volatile or declining equity markets. Market conditions including, but not limited to, changes in interest rates, equity indices, market volatility and foreign currency exchange rates; changes in nonperformance risk; and variations in actuarial assumptions regarding policyholder behavior, mortality and risk margins related to non-capital market inputs, may result in significant fluctuations in the estimated fair value of the guarantees that could materially affect net income. The Company ceded the risk associated with certain of the GMIBs previously described. These reinsurance agreements contain embedded derivatives which are included within premiums, reinsurance and other receivables on the consolidated balance sheets with changes in estimated fair value reported in net derivative gains (losses) or policyholder benefits and claims depending on the statement of operations classification of the direct risk. The value of the embedded derivatives on the ceded risk is determined using a methodology consistent with that described previously for the guarantees directly written by the Company with the exception of the input for nonperformance risk that reflects the credit of the reinsurer. The estimated fair value of the embedded derivatives within funds withheld related to certain ceded reinsurance is determined based on the change in estimated fair value of the underlying assets held by the Company in a reference portfolio backing the funds withheld liability. The estimated fair value of the underlying assets is determined as described in “— Investments — Securities, Short-term Investments and Other Investments.” The estimated fair value of these embedded derivatives is included, along with their funds withheld hosts, in other liabilities on the consolidated balance sheets with changes in estimated fair value recorded in net derivative gains (losses). Changes in the credit spreads on the underlying assets, interest rates and market volatility may result in significant fluctuations in the estimated fair value of these embedded derivatives that could materially affect net income. The estimated fair value of the embedded equity and bond indexed derivatives contained in certain funding agreements is determined using market standard swap valuation models and observable market inputs, including a nonperformance risk adjustment. The estimated fair value of these embedded derivatives are included, along with their funding agreements host, within policyholder account balances with changes in estimated fair value recorded in net derivative gains (losses). Changes in equity and bond indices, interest rates and the Company’s credit standing may result in significant fluctuations in the estimated fair value of these embedded derivatives that could materially affect net income. The Company issues certain annuity contracts which allow the policyholder to participate in returns from equity indices. These equity indexed features are embedded derivatives which are measured at estimated fair value separately from the host fixed annuity contract, with changes in estimated fair value reported in net derivative gains (losses). These embedded derivatives are classified within policyholder account balances on the consolidated balance sheets. The estimated fair value of the embedded equity indexed derivatives, based on the present value of future equity returns to the policyholder using actuarial and present value assumptions including expectations concerning policyholder behavior, is calculated by the Company’s actuarial department. The calculation is based on in-force business and uses standard capital market techniques, such as Black-Scholes, to calculate the value of the portion of the embedded derivative for which the terms are set. The portion of the embedded derivative covering the period beyond where terms are set is calculated as the present value of amounts expected to be spent to provide equity indexed returns in those periods. The valuation of these embedded derivatives also includes the establishment of a risk margin, as well as changes in nonperformance risk. Embedded Derivatives Within Asset and Liability Host Contracts Level 3 Valuation Approaches and Key Inputs: Direct and assumed guaranteed minimum benefits These embedded derivatives are principally valued using the income approach. Valuations are based on option pricing techniques, which utilize significant inputs that may include swap yield curves, currency exchange rates and implied volatilities. These embedded derivatives result in Level 3 classification because one or more of the significant inputs are not observable in the market or cannot be derived principally from, or corroborated by, observable market data. Significant unobservable inputs generally include: the extrapolation beyond observable limits of the swap yield curves and implied volatilities, actuarial assumptions for policyholder behavior and mortality and the potential variability in policyholder behavior and mortality, nonperformance risk and cost of capital for purposes of calculating the risk margin. Reinsurance ceded on certain guaranteed minimum benefits These embedded derivatives are principally valued using the income approach. The valuation techniques and significant market standard unobservable inputs used in their valuation are similar to those described above in “— Direct and assumed guaranteed minimum benefits” and also include counterparty credit spreads. Transfers between Levels Overall, transfers between levels occur when there are changes in the observability of inputs and market activity. Transfers into or out of any level are assumed to occur at the beginning of the period. Transfers between Levels 1 and 2: Transfers between Levels 1 and 2 for assets and liabilities measured at estimated fair value and still held at June 30, 2017 and December 31, 2016 were not significant . Transfers into or out of Level 3: Assets and liabilities are transferred into Level 3 when a significant input cannot be corroborated with market observable data. This occurs when market activity decreases significantly and underlying inputs cannot be observed, current prices are not available, and/or when there are significant variances in quoted prices, thereby affecting transparency. Assets and liabilities are transferred out of Level 3 when circumstances change such that a significant input can be corroborated with market observable data. This may be due to a significant increase in market activity, a specific event, or one or more significant input(s) bec

Junior Subordinated Debt Securi

Junior Subordinated Debt Securities	6 Months Ended
	Jun. 30, 2017
Junior Subordinated Notes [Abstract]
Junior Subordinated Debt Securities [Text Block]	9. Junior Subordinated Debt Securities On February 10, 2017, MetLife, Inc. exchanged $750 million aggregate principal amount of its 9.250% Fixed-to-Floating Rate Junior Subordinated Debentures due 2068 for $750 million aggregate liquidation preference of the 9.250% Fixed-to-Floating Rate Exchangeable Surplus Trust Securities of MetLife Capital Trust X (the “Trust”). As a result of the exchange, MetLife, Inc. became the sole beneficial owner of the Trust, a special purpose entity which issued the exchangeable surplus trust securities to third-party investors. On March 23, 2017, MetLife, Inc. dissolved the Trust.

Equity

Equity	6 Months Ended
	Jun. 30, 2017
Equity [Abstract]
Equity [Text Block]	10. Equity Preferred Stock Preferred stock authorized, issued and outstanding was as follows at both June 30, 2017 and December 31, 2016 : Series Shares Authorized Shares Issued Shares Outstanding Floating Rate Non-Cumulative Preferred Stock, Series A 27,600,000 24,000,000 24,000,000 5.25% Fixed-to-Floating Rate Non-Cumulative Preferred Stock, Series C 1,500,000 1,500,000 1,500,000 Series A Junior Participating Preferred Stock 10,000,000 — — Not designated 160,900,000 — — Total 200,000,000 25,500,000 25,500,000 Common Stock During the six months ended June 30, 2017 and 2016 , MetLife, Inc. repurchased 34,354,967 and 1,445,864 shares through open market purchases for $1.8 billion and $70 million , respectively. See Note 15 for information on subsequent common stock repurchases. At June 30, 2017 , MetLife, Inc. had $888 million remaining under the common stock repurchase authorization. Common stock repurchases are dependent upon several factors, including the Company’s capital position, liquidity, financial strength and credit ratings, general market conditions, the market price of MetLife, Inc.’s common stock compared to management’s assessment of the stock’s underlying value and applicable regulatory approvals, as well as other legal and accounting factors. Stock-Based Compensation Plans Performance Shares and Performance Units Final Performance Shares are paid in shares of MetLife, Inc. common stock. Final Performance Units are payable in cash equal to the closing price of MetLife, Inc. common stock on a date following the last day of the three-year performance period. The performance factor for the January 1, 2014 – December 31, 2016 performance period was 44.4% , which was determined within a possible range from 0% to 175% . This factor has been applied to the 1,066,076 Performance Shares and 165,587 Performance Units associated with that performance period that vested on December 31, 2016 . As a result, in the first quarter of 2017, MetLife, Inc. issued 473,338 shares of its common stock (less withholding for taxes and other items, as applicable), excluding shares that payees choose to defer, and MetLife, Inc. or its affiliates paid the cash value of 73,521 Performance Units (less withholding for taxes and other items, as applicable). Accumulated Other Comprehensive Income (Loss) Information regarding changes in the balances of each component of AOCI attributable to MetLife, Inc., was as follows: Three Months Unrealized Investment Gains (Losses), Net of Related Offsets (1) Unrealized Gains (Losses) on Derivatives Foreign Currency Translation Adjustments Defined Benefit Plans Adjustment Total (In millions) Balance, beginning of period $ 11,336 $ 1,853 $ (4,842 ) $ (1,951 ) $ 6,396 OCI before reclassifications 3,290 (7 ) 169 1 3,453 Deferred income tax benefit (expense) (1,132 ) 3 (6 ) 3 (1,132 ) AOCI before reclassifications, net of income tax 13,494 1,849 (4,679 ) (1,947 ) 8,717 Amounts reclassified from AOCI (47 ) (429 ) — 41 (435 ) Deferred income tax benefit (expense) 22 149 — (17 ) 154 Amounts reclassified from AOCI, net of income tax (25 ) (280 ) — 24 (281 ) Balance, end of period $ 13,469 $ 1,569 $ (4,679 ) $ (1,923 ) $ 8,436 Three Months Unrealized Investment Gains (Losses), Net of Related Offsets (1) Unrealized Gains (Losses) on Derivatives Foreign Currency Translation Adjustments Defined Benefit Plans Adjustment Total (In millions) Balance, beginning of period $ 15,446 $ 1,725 $ (4,282 ) $ (2,024 ) $ 10,865 OCI before reclassifications 4,268 800 209 11 5,288 Deferred income tax benefit (expense) (1,388 ) (269 ) 53 (4 ) (1,608 ) AOCI before reclassifications, net of income tax 18,326 2,256 (4,020 ) (2,017 ) 14,545 Amounts reclassified from AOCI (183 ) 243 — 51 111 Deferred income tax benefit (expense) 61 (68 ) — (17 ) (24 ) Amounts reclassified from AOCI, net of income tax (122 ) 175 — 34 87 Balance, end of period $ 18,204 $ 2,431 $ (4,020 ) $ (1,983 ) $ 14,632 Six Months Unrealized Investment Gains (Losses), Net of Related Offsets (1) Unrealized Gains (Losses) on Derivatives Foreign Currency Translation Adjustments Defined Benefit Plans Adjustment Total (In millions) Balance, beginning of period $ 10,766 $ 1,865 $ (5,312 ) $ (1,972 ) $ 5,347 OCI before reclassifications 4,023 203 517 (19 ) 4,724 Deferred income tax benefit (expense) (1,416 ) (70 ) 116 5 (1,365 ) AOCI before reclassifications, net of income tax 13,373 1,998 (4,679 ) (1,986 ) 8,706 Amounts reclassified from AOCI 149 (658 ) — 85 (424 ) Deferred income tax benefit (expense) (53 ) 229 — (22 ) 154 Amounts reclassified from AOCI, net of income tax 96 (429 ) — 63 (270 ) Balance, end of period $ 13,469 $ 1,569 $ (4,679 ) $ (1,923 ) $ 8,436 Six Months Unrealized Investment Gains (Losses), Net of Related Offsets (1) Unrealized Gains (Losses) on Derivatives Foreign Currency Translation Adjustments Defined Benefit Plans Adjustment Total (In millions) Balance, beginning of period $ 10,315 $ 1,458 $ (4,950 ) $ (2,052 ) $ 4,771 OCI before reclassifications 11,938 1,496 760 11 14,205 Deferred income tax benefit (expense) (3,937 ) (468 ) 170 (4 ) (4,239 ) AOCI before reclassifications, net of income tax 18,316 2,486 (4,020 ) (2,045 ) 14,737 Amounts reclassified from AOCI (166 ) (80 ) — 99 (147 ) Deferred income tax benefit (expense) 54 25 — (37 ) 42 Amounts reclassified from AOCI, net of income tax (112 ) (55 ) — 62 (105 ) Balance, end of period $ 18,204 $ 2,431 $ (4,020 ) $ (1,983 ) $ 14,632 __________________ (1) See Note 6 for information on offsets to investments related to future policy benefits, DAC, VOBA and DSI, and the policyholder dividend obligation. Information regarding amounts reclassified out of each component of AOCI was as follows: AOCI Components Amounts Reclassified from AOCI Consolidated Statements of Operations and Comprehensive Income (Loss) Locations Three Months Six Months 2017 2016 2017 2016 (In millions) Net unrealized investment gains (losses): Net unrealized investment gains (losses) $ 46 $ 158 $ 38 $ 125 Net investment gains (losses) Net unrealized investment gains (losses) (4 ) 16 3 19 Net investment income Net unrealized investment gains (losses) 5 9 (190 ) 22 Net derivative gains (losses) Net unrealized investment gains (losses), before income tax 47 183 (149 ) 166 Income tax (expense) benefit (22 ) (61 ) 53 (54 ) Net unrealized investment gains (losses), net of income tax 25 122 (96 ) 112 Unrealized gains (losses) on derivatives - cash flow hedges: Interest rate swaps 6 18 14 28 Net derivative gains (losses) Interest rate swaps 4 4 9 7 Net investment income Interest rate forwards 2 (1 ) (2 ) 1 Net derivative gains (losses) Interest rate forwards 2 2 3 3 Net investment income Interest rate forwards 1 1 1 1 Other expenses Foreign currency swaps 414 (269 ) 632 37 Net derivative gains (losses) Foreign currency swaps (1 ) (1 ) (1 ) (1 ) Net investment income Foreign currency swaps — — 1 1 Other expenses Credit forwards 1 3 1 3 Net derivative gains (losses) Gains (losses) on cash flow hedges, before income tax 429 (243 ) 658 80 Income tax (expense) benefit (149 ) 68 (229 ) (25 ) Gains (losses) on cash flow hedges, net of income tax 280 (175 ) 429 55 Defined benefit plans adjustment: (1) Amortization of net actuarial gains (losses) (48 ) (52 ) (97 ) (103 ) Amortization of prior service (costs) credit 7 1 12 4 Amortization of defined benefit plan items, before income tax (41 ) (51 ) (85 ) (99 ) Income tax (expense) benefit 17 17 22 37 Amortization of defined benefit plan items, net of income tax (24 ) (34 ) (63 ) (62 ) Total reclassifications, net of income tax $ 281 $ (87 ) $ 270 $ 105 __________________ (1) These AOCI components are included in the computation of net periodic benefit costs. See Note 12 .

Other Expenses

Other Expenses	6 Months Ended
	Jun. 30, 2017
Other Income and Expenses [Abstract]
Other Expenses	11. Other Expenses Information on other expenses was as follows: Three Months Six Months 2017 2016 2017 2016 (In millions) Compensation $ 1,134 $ 1,189 $ 2,323 $ 2,499 Pension, postretirement and postemployment benefit costs 78 103 158 243 Commissions 1,025 1,094 2,035 2,228 Volume-related costs 203 214 401 480 Capitalization of DAC (821 ) (915 ) (1,617 ) (1,896 ) Amortization of DAC and VOBA 704 121 1,237 1,116 Amortization of negative VOBA (38 ) (67 ) (81 ) (166 ) Interest expense on debt 295 306 591 618 Premium taxes, licenses and fees 167 189 355 404 Professional services 431 398 818 728 Rent and related expenses, net of sublease income 71 98 152 195 Other 810 516 1,251 989 Total other expenses $ 4,059 $ 3,246 $ 7,623 $ 7,438 Separation-related expenses, primarily related to fees for the terminations of financing arrangements and professional services, were $330 million and $407 million for the three months and six months ended June 30, 2017 , respectively. Separation-related expenses, primarily related to fees for professional services, were $55 million and $58 million for the three months and six months ended June 30, 2016 , respectively. See Note 3 for further information on Separation-related expenses. Restructuring Charges The Company commenced in 2016 a unit cost improvement program related to the Company’s refreshed enterprise strategy. This global strategy focuses on transforming the Company to become more digital, driving efficiencies and innovation to achieve competitive advantage, and simplified, decreasing the costs and risks associated with the Company’s highly complex industry to customers and shareholders. Restructuring charges related to this program are included in other expenses. As the expenses relate to an enterprise-wide initiative, they are reported in Corporate & Other. Such restructuring charges were as follows: Three Months Six Months Severance (In millions) Balance, beginning of period $ 38 $ 35 Restructuring charges 11 22 Cash payments (32 ) (40 ) Balance, end of period $ 17 $ 17 Total restructuring charges incurred since inception of initiative $ 57 $ 57 Management anticipates further restructuring charges through the year ending December 31, 2019. However, such restructuring plans were not sufficiently developed to enable management to make an estimate of such restructuring charges at June 30, 2017.

Employee Benefit Plans

Employee Benefit Plans	6 Months Ended
	Jun. 30, 2017
Retirement Benefits [Abstract]
Employee Benefit Plans	12. Employee Benefit Plans Pension and Other Postretirement Benefit Plans Certain subsidiaries of MetLife, Inc. sponsor and/or administer various U.S. qualified and nonqualified defined benefit pension plans and other postretirement employee benefit plans covering employees and sales representatives who meet specified eligibility requirements. These subsidiaries also provide certain postemployment benefits and certain postretirement medical and life insurance benefits for U.S. retired employees. The components of net periodic benefit costs were as follows: Three Months 2017 2016 Pension Benefits Other Postretirement Benefits Pension Benefits Other Postretirement Benefits (In millions) Service costs $ 61 $ 2 $ 73 $ 2 Interest costs 109 20 109 21 Curtailment costs (1) — — — (3 ) Expected return on plan assets (130 ) (18 ) (127 ) (19 ) Amortization of net actuarial (gains) losses 48 — 50 2 Amortization of prior service costs (credit) (1 ) (6 ) — (1 ) Net periodic benefit costs (credit) $ 87 $ (2 ) $ 105 $ 2 Six Months 2017 2016 Pension Benefits Other Postretirement Benefits Pension Benefits Other Postretirement Benefits (In millions) Service costs $ 122 $ 3 $ 145 $ 4 Interest costs 217 39 220 42 Curtailment costs (1) — — — 27 Expected return on plan assets (262 ) (36 ) (254 ) (37 ) Amortization of net actuarial (gains) losses 97 — 99 4 Amortization of prior service costs (credit) (1 ) (11 ) — (4 ) Net periodic benefit costs (credit) $ 173 $ (5 ) $ 210 $ 36 __________________ (1) During the three months and six months ended June 30, 2016, the Company recognized curtailment charges on certain postretirement benefit plans in connection with the sale to MassMutual. See Note 3 of the Notes to the Consolidated Financial Statements included in the 2016 Annual Report.

Earnings Per Common Share

Earnings Per Common Share	6 Months Ended
	Jun. 30, 2017
Earnings Per Share [Abstract]
Earnings Per Common Share	13. Earnings Per Common Share The following table presents the weighted average shares, basic earnings per common share and diluted earnings per common share: Three Months Six Months 2017 2016 2017 2016 (In millions, except per share data) Weighted Average Shares: Weighted average common stock outstanding for basic earnings per common share 1,074.0 1,100.3 1,082.1 1,100.6 Incremental common shares from assumed exercise or issuance of stock-based awards 8.1 8.8 8.3 8.3 Weighted average common stock outstanding for diluted earnings per common share 1,082.1 1,109.1 1,090.4 1,108.9 Net Income (Loss): Net income (loss) $ 887 $ 114 $ 1,716 $ 2,317 Less: Net income (loss) attributable to noncontrolling interests 3 4 6 6 Less: Preferred stock dividends 46 46 52 52 Net income (loss) available to MetLife, Inc.’s common shareholders $ 838 $ 64 $ 1,658 $ 2,259 Basic $ 0.78 $ 0.06 $ 1.53 $ 2.05 Diluted $ 0.77 $ 0.06 $ 1.52 $ 2.04

Contingencies, Commitments and

Contingencies, Commitments and Guarantees	6 Months Ended
	Jun. 30, 2017
Commitments and Contingencies Disclosure [Abstract]
Contingencies, Commitments and Guarantees	14. Contingencies, Commitments and Guarantees Contingencies Litigation The Company is a defendant in a large number of litigation matters. In some of the matters, very large and/or indeterminate amounts, including punitive and treble damages, are sought. Modern pleading practice in the U.S. permits considerable variation in the assertion of monetary damages or other relief. Jurisdictions may permit claimants not to specify the monetary damages sought or may permit claimants to state only that the amount sought is sufficient to invoke the jurisdiction of the trial court. In addition, jurisdictions may permit plaintiffs to allege monetary damages in amounts well exceeding reasonably possible verdicts in the jurisdiction for similar matters. This variability in pleadings, together with the actual experience of the Company in litigating or resolving through settlement numerous claims over an extended period of time, demonstrates to management that the monetary relief which may be specified in a lawsuit or claim bears little relevance to its merits or disposition value. Due to the vagaries of litigation, the outcome of a litigation matter and the amount or range of potential loss at particular points in time may normally be difficult to ascertain. Uncertainties can include how fact finders will evaluate documentary evidence and the credibility and effectiveness of witness testimony, and how trial and appellate courts will apply the law in the context of the pleadings or evidence presented, whether by motion practice, at trial or on appeal. Disposition valuations are also subject to the uncertainty of how opposing parties and their counsel will view the relevant evidence and applicable law. The Company establishes liabilities for litigation and regulatory loss contingencies when it is probable that a loss has been incurred and the amount of the loss can be reasonably estimated. Liabilities have been established for a number of the matters noted below. It is possible that some of the matters could require the Company to pay damages or make other expenditures or establish accruals in amounts that could not be reasonably estimated at June 30, 2017 . While the potential future charges could be material in the particular quarterly or annual periods in which they are recorded, based on information currently known to management, management does not believe any such charges are likely to have a material effect on the Company’s financial position. Matters as to Which an Estimate Can Be Made For some of the matters disclosed below, the Company is able to estimate a reasonably possible range of loss. For such matters where a loss is believed to be reasonably possible, but not probable, the Company has not made an accrual. As of June 30, 2017 , the Company estimates the aggregate range of reasonably possible losses in excess of amounts accrued for these matters to be $0 to $400 million . Matters as to Which an Estimate Cannot Be Made For other matters disclosed below, the Company is not currently able to estimate the reasonably possible loss or range of loss. The Company is often unable to estimate the possible loss or range of loss until developments in such matters have provided sufficient information to support an assessment of the range of possible loss, such as quantification of a damage demand from plaintiffs, discovery from other parties and investigation of factual allegations, rulings by the court on motions or appeals, analysis by experts, and the progress of settlement negotiations. On a quarterly and annual basis, the Company reviews relevant information with respect to litigation contingencies and updates its accruals, disclosures and estimates of reasonably possible losses or ranges of loss based on such reviews. Asbestos-Related Claims MLIC is and has been a defendant in a large number of asbestos-related suits filed primarily in state courts. These suits principally allege that the plaintiff or plaintiffs suffered personal injury resulting from exposure to asbestos and seek both actual and punitive damages. MLIC has never engaged in the business of manufacturing, producing, distributing, or selling asbestos or asbestos-containing products nor has MLIC issued liability or workers’ compensation insurance to companies in the business of manufacturing, producing, distributing, or selling asbestos or asbestos-containing products. The lawsuits principally have focused on allegations with respect to certain research, publication and other activities of one or more of MLIC’s employees during the period from the 1920’s through approximately the 1950’s and allege that MLIC learned or should have learned of certain health risks posed by asbestos and, among other things, improperly publicized or failed to disclose those health risks. MLIC believes that it should not have legal liability in these cases. The outcome of most asbestos litigation matters, however, is uncertain and can be impacted by numerous variables, including differences in legal rulings in various jurisdictions, the nature of the alleged injury and factors unrelated to the ultimate legal merit of the claims asserted against MLIC. MLIC employs a number of resolution strategies to manage its asbestos loss exposure, including seeking resolution of pending litigation by judicial rulings and settling individual or groups of claims or lawsuits under appropriate circumstances. Claims asserted against MLIC have included negligence, intentional tort and conspiracy concerning the health risks associated with asbestos. MLIC’s defenses (beyond denial of certain factual allegations) include that: (i) MLIC owed no duty to the plaintiffs— it had no special relationship with the plaintiffs and did not manufacture, produce, distribute, or sell the asbestos products that allegedly injured plaintiffs; (ii) plaintiffs did not rely on any actions of MLIC; (iii) MLIC’s conduct was not the cause of the plaintiffs’ injuries; (iv) plaintiffs’ exposure occurred after the dangers of asbestos were known; and (v) the applicable time with respect to filing suit has expired. During the course of the litigation, certain trial courts have granted motions dismissing claims against MLIC, while other trial courts have denied MLIC’s motions. There can be no assurance that MLIC will receive favorable decisions on motions in the future. While most cases brought to date have settled, MLIC intends to continue to defend aggressively against claims based on asbestos exposure, including defending claims at trials. As reported in the 2016 Annual Report, MLIC received approximately 4,146 asbestos-related claims in 2016 . During the six months ended June 30, 2017 and 2016 , MLIC received approximately 1,896 and 2,348 new asbestos-related claims, respectively. See Note 21 of the Notes to the Consolidated Financial Statements included in the 2016 Annual Report for historical information concerning asbestos claims and MLIC’s increase in its recorded liability at December 31, 2014. The number of asbestos cases that may be brought, the aggregate amount of any liability that MLIC may incur, and the total amount paid in settlements in any given year are uncertain and may vary significantly from year to year. The ability of MLIC to estimate its ultimate asbestos exposure is subject to considerable uncertainty, and the conditions impacting its liability can be dynamic and subject to change. The availability of reliable data is limited and it is difficult to predict the numerous variables that can affect liability estimates, including the number of future claims, the cost to resolve claims, the disease mix and severity of disease in pending and future claims, the impact of the number of new claims filed in a particular jurisdiction and variations in the law in the jurisdictions in which claims are filed, the possible impact of tort reform efforts, the willingness of courts to allow plaintiffs to pursue claims against MLIC when exposure to asbestos took place after the dangers of asbestos exposure were well known, and the impact of any possible future adverse verdicts and their amounts. The ability to make estimates regarding ultimate asbestos exposure declines significantly as the estimates relate to years further in the future. In the Company’s judgment, there is a future point after which losses cease to be probable and reasonably estimable. It is reasonably possible that the Company’s total exposure to asbestos claims may be materially greater than the asbestos liability currently accrued and that future charges to income may be necessary. While the potential future charges could be material in the particular quarterly or annual periods in which they are recorded, based on information currently known by management, management does not believe any such charges are likely to have a material effect on the Company’s financial position. The Company believes adequate provision has been made in its consolidated financial statements for all probable and reasonably estimable losses for asbestos-related claims. MLIC’s recorded asbestos liability is based on its estimation of the following elements, as informed by the facts presently known to it, its understanding of current law and its past experiences: (i) the probable and reasonably estimable liability for asbestos claims already asserted against MLIC, including claims settled but not yet paid; (ii) the probable and reasonably estimable liability for asbestos claims not yet asserted against MLIC, but which MLIC believes are reasonably probable of assertion; and (iii) the legal defense costs associated with the foregoing claims. Significant assumptions underlying MLIC’s analysis of the adequacy of its recorded liability with respect to asbestos litigation include: (i) the number of future claims; (ii) the cost to resolve claims; and (iii) the cost to defend claims. MLIC reevaluates on a quarterly and annual basis its exposure from asbestos litigation, including studying its claims experience, reviewing external literature regarding asbestos claims experience in the United States, assessing relevant trends impacting asbestos liability and considering numerous variables that can affect its asbestos liability exposure on an overall or per claim basis. These variables include bankruptcies of other companies involved in asbestos litigation, legislative and judicial developments, the number of pending claims involving serious disease, the number of new claims filed against it and other defendants and the jurisdictions in which claims are pending. Based upon its regular reevaluation of its exposure from asbestos litigation, MLIC has updated its liability analysis for asbestos-related claims through June 30, 2017 . Regulatory Matters The Company receives and responds to subpoenas or other inquiries seeking a broad range of information from state regulators, including state insurance commissioners; state attorneys general or other state governmental authorities; federal regulators, including the SEC; federal governmental authorities, including congressional committees; and the Financial Industry Regulatory Authority (“FINRA”), as well as from local and national regulators and government authorities in countries outside the United States where MetLife conducts business. The issues involved in information requests and regulatory matters vary widely. The Company cooperates in these inquiries. In the Matter of Chemform, Inc. Site, Pompano Beach, Broward County, Florida In July 2010, the Environmental Protection Agency (“EPA”) advised MLIC that it believed payments were due under two settlement agreements, known as “Administrative Orders on Consent,” that New England Mutual Life Insurance Company (“New England Mutual”) signed in 1989 and 1992 with respect to the cleanup of a Superfund site in Florida (the “Chemform Site”). The EPA originally contacted MLIC (as successor to New England Mutual) and a third party in 2001, and advised that they owed additional clean-up costs for the Chemform Site. The matter was not resolved at that time. The EPA is requesting payment of an amount under $1 million from MLIC and such third party for past costs and an additional amount for future environmental testing costs at the Chemform Site. In September 2012, the EPA, MLIC and the third party executed an Administrative Order on Consent under which MLIC and the third party have agreed to be responsible for certain environmental testing at the Chemform Site. The Company estimates that its costs for the environmental testing will not exceed $100 thousand . The September 2012 Administrative Order on Consent does not resolve the EPA’s claim for past clean-up costs. The EPA may seek additional costs if the environmental testing identifies issues. The Company estimates that the aggregate cost to resolve this matter will not exceed $1 million . Sales Practices Regulatory Matters Regulatory authorities in a number of states and FINRA, and occasionally the SEC, have had investigations or inquiries relating to sales of individual life insurance policies or annuities or other products by MLIC, MetLife Insurance Company USA, New England Life Insurance Company (“NELICO”), General American Life Insurance Company, First MetLife Investors Insurance Company and broker-dealer, MetLife Securities, Inc. (“MSI”). These investigations often focus on the conduct of particular financial services representatives and the sale of unregistered or unsuitable products or the misuse of client assets. Over the past several years, these and a number of investigations by other regulatory authorities were resolved for monetary payments and certain other relief, including restitution payments. The Company may continue to resolve investigations in a similar manner. The Company believes adequate provision has been made in its consolidated financial statements for all probable and reasonably estimable losses for these sales practices-related investigations or inquiries. Unclaimed Property Litigation City of Westland Police and Fire Retirement System v. MetLife, Inc., et. al. (S.D.N.Y., filed January 12, 2012) Seeking to represent a class of persons who purchased MetLife, Inc. common shares between February 2, 2010, and October 6, 2011, the plaintiff alleges that MetLife, Inc. and several current and former directors and executive officers of MetLife, Inc. violated the Securities Act of 1933, as well as the Securities Exchange Act of 1934 and Rule 10b-5 promulgated thereunder by issuing, or causing MetLife, Inc. to issue, materially false and misleading statements concerning MetLife, Inc.’s potential liability for millions of dollars in insurance benefits that should have been paid to beneficiaries or escheated to the states. Plaintiff seeks unspecified compensatory damages and other relief. The defendants intend to defend this action vigorously. Total Control Accounts Litigation MLIC is a defendant in a lawsuit related to its use of retained asset accounts, known as TCA, as a settlement option for death benefits. Owens v. Metropolitan Life Insurance Company (N.D. Ga., filed April 17, 2014) Plaintiff filed this putative class action lawsuit on behalf of all persons for whom MLIC established a retained asset account, known as a TCA, to pay death benefits under an Employee Retirement Income Security Act of 1974 (“ERISA”) plan. The action alleges that MLIC’s use of the TCA as the settlement option for life insurance benefits under some group life insurance policies violates MLIC’s fiduciary duties under ERISA. As damages, plaintiff seeks disgorgement of profits that MLIC realized on accounts owned by members of the putative class. On September 27, 2016, the court denied MLIC’s summary judgment motion in full and granted plaintiff’s partial summary judgment motion. The Company intends to defend this action vigorously. Diversified Lending Group Litigations Hartshorne v. MetLife Inc., et al. (Los Angeles County Superior Court, filed March 25, 2015) Plaintiffs named MetLife, Inc., MSI, and NELICO in 12 related lawsuits in California state court alleging various causes of action including multiple negligence and statutory claims relating to a Ponzi scheme involving the Diversified Lending Group. In August 2016, a trial of claims by one of the plaintiffs, Christine Ramirez, resulted in a verdict against MetLife, Inc., MSI, and NELICO for approximately $200 thousand in compensatory damages and $15 million in punitive damages. On November 30, 2016, Ramirez consented to the court’s reduction of punitive damages to approximately $7 million . These companies have filed a notice appealing this judgment to the Second Appellate District of the State of California. On May 2, 2017, the court awarded the plaintiff approximately $6.5 million in attorneys’ fees and costs. The Company has appealed this decision. Other Litigation Sun Life Assurance Company of Canada Indemnity Claim In 2006, Sun Life Assurance Company of Canada (“Sun Life”), as successor to the purchaser of MLIC’s Canadian operations, filed a lawsuit in Toronto, seeking a declaration that MLIC remains liable for “market conduct claims” related to certain individual life insurance policies sold by MLIC that were subsequently transferred to Sun Life. In January 2010, the court found that Sun Life had given timely notice of its claim for indemnification but, because it found that Sun Life had not yet incurred an indemnifiable loss, granted MLIC’s motion for summary judgment. Both parties agreed to consider the indemnity claim through arbitration. In September 2010, Sun Life notified MLIC that a purported class action lawsuit was filed against Sun Life in Toronto alleging sales practices claims regarding the policies sold by MLIC and transferred to Sun Life. On August 30, 2011, Sun Life notified MLIC that another purported class action lawsuit was filed against Sun Life in Vancouver, BC alleging sales practices claims regarding certain of the same policies sold by MLIC and transferred to Sun Life. Sun Life contends that MLIC is obligated to indemnify Sun Life for some or all of the claims in these lawsuits. These sales practices cases against Sun Life are ongoing, and the Company is unable to estimate the reasonably possible loss or range of loss arising from this litigation. MetLife, Inc. v. Financial Stability Oversight Council (D. D.C., January 13, 2015) MetLife, Inc. filed this action in U.S. District Court for the District of Columbia (“D.C. District Court”) seeking to overturn the Financial Stability Oversight Council’s (“FSOC”) designation of MetLife, Inc. as a non-bank systemically important financial institution (“non-bank SIFI”). The suit is brought under the section of the Dodd-Frank Wall Street Reform and Consumer Protection Act providing that a company designated as a non-bank SIFI may petition the federal courts for review, and seeks an order requiring that the final determination be rescinded. The D.C. District Court issued a decision on March 30, 2016 granting, in part, MetLife, Inc.’s cross motion for summary judgment and rescinding the FSOC’s designation of MetLife, Inc. as a non-bank SIFI. On April 8, 2016, the FSOC appealed the D.C. District Court’s order to the United States Court of Appeals for the District of Columbia (“D.C. Circuit”). On August 2, 2017, the D.C. Circuit ordered that the appeal be held in abeyance pending an upcoming report by the Secretary of the Treasury following its review of the FSOC SIFI designation process and standards. Voshall v. Metropolitan Life Insurance Company (Superior Court of the State of California, County of Los Angeles, April 8, 2015) Plaintiff filed this putative class action lawsuit on behalf of himself and all persons covered under a long-term group disability income insurance policy issued by MLIC to public entities in California between April 8, 2011 and April 8, 2015. Plaintiff alleges that MLIC improperly reduced benefits by including cost of living adjustments and employee paid contributions in the employer retirement benefits and other income that reduces the benefit payable under such policies. Plaintiff asserts causes of action for declaratory relief, violation of the California Business & Professions Code, breach of contract and breach of the implied covenant of good faith and fair dealing. The Company intends to defend this action vigorously. Martin v. Metropolitan Life Insurance Company, (Superior Court of the State of California, County of Contra Costa, filed December 17, 2015) Plaintiffs filed this putative class action lawsuit on behalf of themselves and all California persons who have been charged compound interest by MLIC in life insurance policy and/or premium loan balances within the last four years. Plaintiffs allege that MLIC has engaged in a pattern and practice of charging compound interest on life insurance policy and premium loans without the borrower authorizing such compounding, and that this constitutes an unlawful business practice under California law. Plaintiff asserts causes of action for declaratory relief, violation of California’s Unfair Competition Law and Usury Law, and unjust enrichment. Plaintiff seeks declaratory and injunctive relief, restitution of interest, and damages in an unspecified amount. On April 12, 2016, the court granted MLIC’s motion to dismiss. Plaintiffs have appealed this ruling. Lau v. Metropolitan Life Insurance Company (S.D.N.Y. filed, December 3, 2015) This putative class action lawsuit was filed by a single defined contribution plan participant on behalf of all ERISA plans whose assets were invested in MetLife’s “Group Annuity Contract Stable Value Funds” within the past six years. The suit alleges breaches of fiduciary duty under ERISA and challenges the “spread” with respect to the stable value fund group annuity products sold to retirement plans. The allegations focus on the methodology MetLife uses to establish and reset the crediting rate, the terms under which plan participants are permitted to transfer funds from a stable value option to another investment option, the procedures followed if an employer terminates a contract, and the level of disclosure provided. Plaintiff seeks declaratory and injunctive relief, as well as damages in an unspecified amount. The Company intends to defend this action vigorously. Newman v. Metropolitan Life Insurance Company (N.D. Ill., filed March 23, 2016) Plaintiff filed this putative class action alleging causes of action for breach of contract, fraud, and violations of the Illinois Consumer Fraud and Deceptive Business Practices Act, based on MLIC’s class-wide increase in premiums charged for long-term care insurance policies. Plaintiff alleges a class consisting of herself and all persons over age 65 who selected a Reduced Pay at Age 65 payment feature and whose premium rates were increased after age 65. Plaintiff asserts that premiums could not be increased for these class members and/or that marketing material was misleading as to MLIC’s right to increase premiums. Plaintiff seeks unspecified compensatory, statutory and punitive damages as well as recessionary and injunctive relief. On April 12, 2017, the court granted MLIC’s motion, dismissing the action with prejudice. On April 21, 2017, plaintiff appealed this ruling. Miller, et al. v. MetLife Inc., et al. (C.D. Cal., filed April 7, 2017) Plaintiff filed this putative class action against MetLife, Inc. and MLIC purporting to assert claims on behalf of all persons who replaced their MetLife Optional Term Life or Group Universal Life policy for a Group Variable Universal Life policy wherein MetLife allegedly charged smoker rates for certain non-smokers. Plaintiff seeks unspecified compensatory and punitive damages, as well as other relief. The Company intends to defend this action vigorously. Sales Practices Claims Over the past several years, the Company has faced numerous claims, including class action lawsuits, alleging improper marketing or sales of individual life insurance policies, annuities, mutual funds, other products or the misuse of client assets. Some of the current cases seek substantial damages, including punitive and treble damages and attorneys’ fees. The Company continues to defend vigorously against the claims in these matters. The Company believes adequate provision has been made in its consolidated financial statements for all probable and reasonably estimable losses for sales practices matters. Summary Putative or certified class action litigation and other litigation and claims and assessments against the Company, in addition to those discussed previously and those otherwise provided for in the Company’s consolidated financial statements, have arisen in the course of the Company’s business, including, but not limited to, in connection with its activities as an insurer, mortgage lending bank, employer, investor, investment advisor and taxpayer. Further, state insurance regulatory authorities and other federal and state authorities regularly make inquiries and conduct investigations concerning the Company’s compliance with applicable insurance and other laws and regulations. It is not possible to predict the ultimate outcome of all pending investigations and legal proceedings. In some of the matters referred to previously, very large and/or indeterminate amounts, including punitive and treble damages, are sought. Although in light of these considerations it is possible that an adverse outcome in certain cases could have a material effect upon the Company’s financial position, based on information currently known by the Company’s management, in its opinion, the outcomes of such pending investigations and legal proceedings are not likely to have such an effect. However, given the large and/or indeterminate amounts sought in certain of these matters and the inherent unpredictability of litigation, it is possible that an adverse outcome in certain matters could, from time to time, have a material effect on the Company’s consolidated net income or cash flows in particular quarterly or annual periods. Commitments Mortgage Loan Commitments The Company commits to lend funds under mortgage loan commitments. The amounts of these mortgage loan commitments were $4.0 billion and $4.3 billion at June 30, 2017 and December 31, 2016 , respectively. Commitments to Fund Partnership Investments, Bank Credit Facilities, Bridge Loans and Private Corporate Bond Investments The Company commits to fund partnership investments and to lend funds under bank credit facilities, bridge loans and private corporate bond investments. The amounts of these unfunded commitments were $8.6 billion and $8.2 billion at June 30, 2017 and December 31, 2016 , respectively. Guarantees In the normal course of its business, the Company has provided certain indemnities, guarantees and commitments to third parties such that it may be required to make payments now or in the future. In the context of acquisition, disposition, investment and other transactions, the Company has provided indemnities and guarantees, including those related to tax, environmental and other specific liabilities and other indemnities and guarantees that are triggered by, among other things, breaches of representations, warranties or covenants provided by the Company. In addition, in the normal course of business, the Company provides indemnifications to counterparties in contracts with triggers similar to the foregoing, as well as for certain other liabilities, such as third-party lawsuits. These obligations are often subject to time limitations that vary in duration, including contractual limitations and those that arise by operation of law, such as applicable statutes of limitation. In some cases, the maximum potential obligation under the indemnities and guarantees is subject to a contractual limitation ranging from less than $1 million to $329 million , with a cumulative maximum of $938 million , while in other cases such limitations are not specified or applicable. Since certain of these obligations are not subject to limitations, the Company does not believe that it is possible to determine the maximum potential amount that could become due under these guarantees in the future. Management believes that it is unlikely the Company will have to make any material payments under these indemnities, guarantees, or commitments. In addition, the Company indemnifies its directors and officers as provided in its charters and by-laws. Also, the Company indemnifies its agents for liabilities incurred as a result of their representation of the Company’s interests. Since these indemnities are generally not subject to limitation with respect to duration or amount, the Company does not believe that it is possible to determine the maximum potential amount that could become due under these indemnities in the future. The Company has also minimum fund yield requirements on certain international pension funds in accordance with local laws. Since these guarantees are not subject to limitation with respect to duration or amount, the Company does not believe that it is possible to determine the maximum potential amount that could become due under these guarantees in the future. The Company’s recorded liabilities were $8 million and $10 million at June 30, 2017 and December 31, 2016 , respectively, for indemnities, guarantees and commitments.

Subsequent Event

Subsequent Event	6 Months Ended
	Jun. 30, 2017
Subsequent Events [Abstract]
Subsequent Event	15. Subsequent Events The Separation See Note 3 for subsequent events related to the Separation. Common Stock Repurchases In the third quarter of 2017 through July 31, 2017 , MetLife, Inc. repurchased 892,524 shares of its common stock in the open market for $49 million . Common Stock Dividend On July 7, 2017, the MetLife, Inc. Board of Directors declared a third quarter 2017 common stock dividend of $0.40 per share payable on September 13, 2017 to shareholders of record as of August 7, 2017. The Company estimates that the aggregate dividend payment will be $426 million .

Business, Basis of Presentati22

Business, Basis of Presentation and Summary of Significant Accounting Policies (Policies)	6 Months Ended
	Jun. 30, 2017
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Use of Estimates	The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America (“GAAP”) requires management to adopt accounting policies and make estimates and assumptions that affect amounts reported on the interim condensed consolidated financial statements. In applying these policies and estimates, management makes subjective and complex judgments that frequently require assumptions about matters that are inherently uncertain. Many of these policies, estimates and related judgments are common in the insurance and financial services industries; others are specific to the Company’s business and operations. Actual results could differ from these estimates.
Consolidation of Subsidiaries	The accompanying interim condensed consolidated financial statements include the accounts of MetLife, Inc. and its subsidiaries, as well as partnerships and joint ventures in which the Company has control, and variable interest entities (“VIEs”) for which the Company is the primary beneficiary. Intercompany accounts and transactions have been eliminated. The Company uses the equity method of accounting for equity securities when it has significant influence or at least 20% interest and for real estate joint ventures and other limited partnership interests (“investees”) when it has more than a minor ownership interest or more than a minor influence over the investee’s operations. The Company generally recognizes its share of the investee’s earnings on a three-month lag in instances where the investee’s financial information is not sufficiently timely or when the investee’s reporting period differs from the Company’s reporting period. The Company uses the cost method of accounting for investments in which it has virtually no influence over the investee’s operations. The accompanying interim condensed consolidated financial statements are unaudited and reflect all adjustments (including normal recurring adjustments) necessary to present fairly the financial position, results of operations and cash flows for the interim periods presented in conformity with GAAP. Interim results are not necessarily indicative of full year performance. The December 31, 2016 consolidated balance sheet data was derived from audited consolidated financial statements included in MetLife, Inc.’s Annual Report on Form 10‑K for the year ended December 31, 2016 (the “2016 Annual Report”), which include all disclosures required by GAAP. Therefore, these interim condensed consolidated financial statements should be read in conjunction with the consolidated financial statements of the Company included in the 2016 Annual Report. Closed block assets, liabilities, revenues and expenses are combined on a line-by-line basis with the assets, liabilities, revenues and expenses outside the closed block based on the nature of the particular item.
Investments	Maturities of Fixed Maturity Securities Actual maturities may differ from contractual maturities due to the exercise of call or prepayment options. Fixed maturity securities not due at a single maturity date have been presented in the year of final contractual maturity. Structured Securities are shown separately, as they are not due at a single maturity. The Company defines delinquency consistent with industry practice, when mortgage loans are past due as follows: commercial and residential mortgage loans — 60 days and agricultural mortgage loans — 90 days. Past Due and Nonaccrual Mortgage Loans Variable Interest Entities The Company has invested in legal entities that are VIEs. In certain instances, the Company holds both the power to direct the most significant activities of the entity, as well as an economic interest in the entity and, as such, is deemed to be the primary beneficiary or consolidator of the entity. The determination of the VIE’s primary beneficiary requires an evaluation of the contractual and implied rights and obligations associated with each party’s relationship with or involvement in the entity, an estimate of the entity’s expected losses and expected residual returns and the allocation of such estimates to each party involved in the entity.
Derivatives	Freestanding Derivatives Freestanding derivatives are carried on the Company’s balance sheet either as assets within other invested assets or as liabilities within other liabilities at estimated fair value. The Company does not offset the estimated fair value amounts recognized for derivatives executed with the same counterparty under the same master netting agreement. Accruals on derivatives are generally recorded in accrued investment income or within other liabilities. However, accruals that are not scheduled to settle within one year are included with the derivatives carrying value in other invested assets or other liabilities. If a derivative is not designated as an accounting hedge or its use in managing risk does not qualify for hedge accounting, changes in the estimated fair value of the derivative are reported in net derivative gains (losses) except as follows: Statement of Operations Presentation: Derivative: Policyholder benefits and claims • Economic hedges of variable annuity guarantees included in future policy benefits Net investment income • Economic hedges of equity method investments in joint ventures • All derivatives held in relation to trading portfolios • Derivatives held within contractholder-directed unit-linked investments Hedge Accounting To qualify for hedge accounting, at the inception of the hedging relationship, the Company formally documents its risk management objective and strategy for undertaking the hedging transaction, as well as its designation of the hedge. Hedge designation and financial statement presentation of changes in estimated fair value of the hedging derivatives are as follows: • Fair value hedge (a hedge of the estimated fair value of a recognized asset or liability) - in net derivative gains (losses), consistent with the change in estimated fair value of the hedged item attributable to the designated risk being hedged. • Cash flow hedge (a hedge of a forecasted transaction or of the variability of cash flows to be received or paid related to a recognized asset or liability) - effectiveness in OCI (deferred gains or losses on the derivative are reclassified into the statement of operations when the Company’s earnings are affected by the variability in cash flows of the hedged item); ineffectiveness in net derivative gains (losses). • Net investment in a foreign operation hedge - effectiveness in OCI, consistent with the translation adjustment for the hedged net investment in the foreign operation; ineffectiveness in net derivative gains (losses). The changes in estimated fair values of the hedging derivatives are exclusive of any accruals that are separately reported on the statement of operations within interest income or interest expense to match the location of the hedged item. Accruals on derivatives in net investment hedges are recognized in OCI. In its hedge documentation, the Company sets forth how the hedging instrument is expected to hedge the designated risks related to the hedged item and sets forth the method that will be used to retrospectively and prospectively assess the hedging instrument’s effectiveness and the method that will be used to measure ineffectiveness. A derivative designated as a hedging instrument must be assessed as being highly effective in offsetting the designated risk of the hedged item. Hedge effectiveness is formally assessed at inception and at least quarterly throughout the life of the designated hedging relationship. Assessments of hedge effectiveness and measurements of ineffectiveness are also subject to interpretation and estimation and different interpretations or estimates may have a material effect on the amount reported in net income. The Company discontinues hedge accounting prospectively when: (i) it is determined that the derivative is no longer highly effective in offsetting changes in the estimated fair value or cash flows of a hedged item; (ii) the derivative expires, is sold, terminated, or exercised; (iii) it is no longer probable that the hedged forecasted transaction will occur; or (iv) the derivative is de-designated as a hedging instrument. When hedge accounting is discontinued because it is determined that the derivative is not highly effective in offsetting changes in the estimated fair value or cash flows of a hedged item, the derivative continues to be carried on the balance sheet at its estimated fair value, with changes in estimated fair value recognized in net derivative gains (losses). The carrying value of the hedged recognized asset or liability under a fair value hedge is no longer adjusted for changes in its estimated fair value due to the hedged risk, and the cumulative adjustment to its carrying value is amortized into income over the remaining life of the hedged item. Provided the hedged forecasted transaction is still probable of occurrence, the changes in estimated fair value of derivatives recorded in OCI related to discontinued cash flow hedges are released into the statement of operations when the Company’s earnings are affected by the variability in cash flows of the hedged item. When hedge accounting is discontinued because it is no longer probable that the forecasted transactions will occur on the anticipated date or within two months of that date, the derivative continues to be carried on the balance sheet at its estimated fair value, with changes in estimated fair value recognized currently in net derivative gains (losses). Deferred gains and losses of a derivative recorded in OCI pursuant to the discontinued cash flow hedge of a forecasted transaction that is no longer probable are recognized immediately in net derivative gains (losses). In all other situations in which hedge accounting is discontinued, the derivative is carried at its estimated fair value on the balance sheet, with changes in its estimated fair value recognized in the current period as net derivative gains (losses). Embedded Derivatives The Company sells variable annuities and issues certain insurance products and investment contracts and is a party to certain reinsurance agreements that have embedded derivatives. The Company assesses each identified embedded derivative to determine whether it is required to be bifurcated. The embedded derivative is bifurcated from the host contract and accounted for as a freestanding derivative if: • the combined instrument is not accounted for in its entirety at estimated fair value with changes in estimated fair value recorded in earnings; • the terms of the embedded derivative are not clearly and closely related to the economic characteristics of the host contract; and • a separate instrument with the same terms as the embedded derivative would qualify as a derivative instrument. Such embedded derivatives are carried on the balance sheet at estimated fair value with the host contract and changes in their estimated fair value are generally reported in net derivative gains (losses), except for those in policyholder benefits and claims related to ceded reinsurance of GMIB. If the Company is unable to properly identify and measure an embedded derivative for separation from its host contract, the entire contract is carried on the balance sheet at estimated fair value, with changes in estimated fair value recognized in the current period in net investment gains (losses) or net investment income. Additionally, the Company may elect to carry an entire contract on the balance sheet at estimated fair value, with changes in estimated fair value recognized in the current period in net investment gains (losses) or net investment income if that contract contains an embedded derivative that requires bifurcation. At inception, the Company attributes to the embedded derivative a portion of the projected future guarantee fees to be collected from the policyholder equal to the present value of projected future guaranteed benefits. Any additional fees represent “excess” fees and are reported in universal life and investment-type product policy fees. Derivatives are financial instruments with values derived from interest rates, foreign currency exchange rates, credit spreads and/or other financial indices. Derivatives may be exchange-traded or contracted in the over-the-counter (“OTC”) market. Certain of the Company’s OTC derivatives are cleared and settled through central clearing counterparties (“OTC-cleared”), while others are bilateral contracts between two counterparties (“OTC-bilateral”). The types of derivatives the Company uses include swaps, forwards, futures and option contracts. To a lesser extent, the Company uses credit default swaps and structured interest rate swaps to synthetically replicate investment risks and returns which are not readily available in the cash markets. The Company designates and accounts for the following as fair value hedges when they have met the requirements of fair value hedging: (i) interest rate swaps to convert fixed rate assets and liabilities to floating rate assets and liabilities; (ii) foreign currency swaps to hedge the foreign currency fair value exposure of foreign currency denominated assets and liabilities; and (iii) foreign currency forwards to hedge the foreign currency fair value exposure of foreign currency denominated investments. The Company designates and accounts for the following as cash flow hedges when they have met the requirements of cash flow hedging: (i) interest rate swaps to convert floating rate assets and liabilities to fixed rate assets and liabilities; (ii) foreign currency swaps to hedge the foreign currency cash flow exposure of foreign currency denominated assets and liabilities; (iii) interest rate forwards and credit forwards to lock in the price to be paid for forward purchases of investments; (iv) interest rate swaps and interest rate forwards to hedge the forecasted purchases of fixed-rate investments; and (v) interest rate swaps and interest rate forwards to hedge forecasted fixed-rate borrowings. The Company uses foreign currency exchange rate derivatives, which may include foreign currency forwards and currency options, to hedge portions of its net investments in foreign operations against adverse movements in exchange rates. The Company measures ineffectiveness on these derivatives based upon the change in forward rates. When net investments in foreign operations are sold or substantially liquidated, the amounts in AOCI are reclassified to the statement of operations. The Company may be exposed to credit-related losses in the event of nonperformance by its counterparties to derivatives. Generally, the current credit exposure of the Company’s derivatives is limited to the net positive estimated fair value of derivatives at the reporting date after taking into consideration the existence of master netting or similar agreements and any collateral received pursuant to such agreements.
Employee Benefit Plans	Certain subsidiaries of MetLife, Inc. sponsor and/or administer various U.S. qualified and nonqualified defined benefit pension plans and other postretirement employee benefit plans covering employees and sales representatives who meet specified eligibility requirements. These subsidiaries also provide certain postemployment benefits and certain postretirement medical and life insurance benefits for U.S. retired employees.
Closed Block	On April 7, 2000 (the “Demutualization Date”), Metropolitan Life Insurance Company (“MLIC”) converted from a mutual life insurance company to a stock life insurance company and became a wholly-owned subsidiary of MetLife, Inc. The conversion was pursuant to an order by the New York Superintendent of Insurance approving MLIC’s plan of reorganization, as amended (the “Plan of Reorganization”). On the Demutualization Date, MLIC established a closed block for the benefit of holders of certain individual life insurance policies of MLIC. Experience within the closed block, in particular mortality and investment yields, as well as realized and unrealized gains and losses, directly impact the policyholder dividend obligation. Amortization of the closed block DAC, which resides outside of the closed block, is based upon cumulative actual and expected earnings within the closed block. Accordingly, the Company’s net income continues to be sensitive to the actual performance of the closed block.
New Accounting Pronouncements, Policy [Policy Text Block]	Effective January 1, 2017, the Company early adopted guidance relating to business combinations. The new guidance clarifies the definition of a business and requires that an entity apply certain criteria in order to determine when a set of assets and activities qualifies as a business. The adoption of this standard will result in fewer acquisitions qualifying as businesses and, accordingly, acquisition costs for those acquisitions that do not qualify as businesses will be capitalized rather than expensed. The adoption did not have an impact on the Company’s consolidated financial statements. Effective January 1, 2017, the Company retrospectively adopted guidance relating to consolidation. The new guidance does not change the characteristics of a primary beneficiary under current GAAP. It changes how a reporting entity evaluates whether it is the primary beneficiary of a VIE by changing how a reporting entity that is a single decisionmaker of a VIE handles indirect interests in the entity held through related parties that are under common control with the reporting entity. The adoption of this new guidance did not have a material impact on the Company’s consolidated financial statements. Effective January 1, 2017, the Company adopted guidance related to stock-based compensation. The new guidance changes several aspects of the accounting for share-based payment and award transactions, including (i) income tax consequences when awards vest or are settled; (ii) classification as either equity or liability due to statutory tax withholding requirements; and (iii) classification on the statement of cash flows. In addition, the new guidance provides an accounting policy election to account for forfeitures as they occur, rather than to account for them based on an estimate of expected forfeitures. The Company has elected to continue to account for forfeitures based on an estimate of expected forfeitures. In addition, the Company elected to apply the change in presentation in the statement of cash flows related to excess tax benefits prospectively and prior periods have not been adjusted. The change in presentation for cash paid to a taxing authority when directly withholding equivalent shares has been classified as a financing activity in the statement of cash flows. The change was applied retrospectively and thus the directly withheld share equivalent amount was reclassified from an operating activity to a financing activity in the consolidated statements of cash flows. The adoption of this new guidance did not have a material impact on the Company’s consolidated financial statements.

Segment Information (Tables)

Segment Information (Tables)	6 Months Ended
	Jun. 30, 2017
Segment Reporting [Abstract]
Segment Reporting Information, by Segment	Operating Results Three Months Ended June 30, 2017 U.S. Asia Latin EMEA MetLife Brighthouse Corporate Total Adjustments Total Consolidated (In millions) Revenues Premiums $ 5,877 $ 1,659 $ 645 $ 505 $ 1,022 $ 217 $ 10 $ 9,935 $ — $ 9,935 Universal life and investment-type product policy fees 251 375 275 92 345 885 (32 ) 2,191 111 2,302 Net investment income 1,575 729 289 78 1,401 791 21 4,884 75 4,959 Other revenues 199 11 8 28 37 162 (68 ) 377 5 382 Net investment gains (losses) — — — — — — — — 104 104 Net derivative gains (losses) — — — — — — — — (437 ) (437 ) Total revenues 7,902 2,774 1,217 703 2,805 2,055 (69 ) 17,387 (142 ) 17,245 Expenses Policyholder benefits and claims and policyholder dividends 5,878 1,247 596 270 1,720 654 (15 ) 10,350 272 10,622 Interest credited to policyholder account balances 359 333 94 25 255 283 — 1,349 213 1,562 Capitalization of DAC (116 ) (428 ) (88 ) (100 ) (23 ) (63 ) (3 ) (821 ) — (821 ) Amortization of DAC and VOBA 114 290 68 95 139 136 2 844 (140 ) 704 Amortization of negative VOBA — (30 ) — (5 ) — — — (35 ) (3 ) (38 ) Interest expense on debt 4 — 2 — 5 26 257 294 1 295 Other expenses 914 895 357 332 370 647 61 3,576 343 3,919 Total expenses 7,153 2,307 1,029 617 2,466 1,683 302 15,557 686 16,243 Provision for income tax expense (benefit) 250 157 34 14 104 89 (271 ) 377 (262 ) 115 Operating earnings $ 499 $ 310 $ 154 $ 72 $ 235 $ 283 $ (100 ) 1,453 Adjustments to: Total revenues (142 ) Total expenses (686 ) Provision for income tax (expense) benefit 262 Net income (loss) $ 887 $ 887 Operating Results Three Months Ended June 30, 2016 U.S. Asia Latin EMEA MetLife Brighthouse Corporate Total Adjustments Total Consolidated (In millions) Revenues Premiums $ 5,171 $ 1,681 $ 631 $ 519 $ 1,122 $ 280 $ 13 $ 9,417 $ — $ 9,417 Universal life and investment-type product policy fees 248 370 269 95 361 861 (31 ) 2,173 113 2,286 Net investment income 1,565 678 243 83 1,477 870 (35 ) 4,881 6 4,887 Other revenues 193 16 8 19 203 346 (301 ) 484 3 487 Net investment gains (losses) — — — — — — — — 266 266 Net derivative gains (losses) — — — — — — — — (2,099 ) (2,099 ) Total revenues 7,177 2,745 1,151 716 3,163 2,357 (354 ) 16,955 (1,711 ) 15,244 Expenses Policyholder benefits and claims and policyholder dividends 5,270 1,324 583 283 1,927 1,008 (10 ) 10,385 213 10,598 Interest credited to policyholder account balances 323 324 84 30 261 291 1 1,314 186 1,500 Capitalization of DAC (121 ) (426 ) (80 ) (106 ) (96 ) (83 ) (3 ) (915 ) — (915 ) Amortization of DAC and VOBA 118 304 66 103 269 152 3 1,015 (894 ) 121 Amortization of negative VOBA — (57 ) — (4 ) — — — (61 ) (6 ) (67 ) Interest expense on debt 3 — — — 14 32 254 303 3 306 Other expenses 918 877 323 336 864 555 (214 ) 3,659 142 3,801 Total expenses 6,511 2,346 976 642 3,239 1,955 31 15,700 (356 ) 15,344 Provision for income tax expense (benefit) 223 140 38 10 (43 ) 105 (188 ) 285 (499 ) (214 ) Operating earnings $ 443 $ 259 $ 137 $ 64 $ (33 ) $ 297 $ (197 ) 970 Adjustments to: Total revenues (1,711 ) Total expenses 356 Provision for income tax (expense) benefit 499 Net income (loss) $ 114 $ 114 Operating Results Six Months Ended June 30, 2017 U.S. Asia Latin EMEA MetLife Holdings Brighthouse Financial Corporate & Other Total Adjustments Total (In millions) Revenues Premiums $ 11,062 $ 3,367 $ 1,292 $ 1,007 $ 2,081 $ 394 $ 47 $ 19,250 $ — $ 19,250 Universal life and investment-type product policy fees 516 741 535 187 707 1,769 (63 ) 4,392 212 4,604 Net investment income 3,187 1,431 592 152 2,842 1,649 26 9,879 276 10,155 Other revenues 403 21 17 45 133 236 (110 ) 745 11 756 Net investment gains (losses) — — — — — — — — 112 112 Net derivative gains (losses) — — — — — — — — (1,363 ) (1,363 ) Total revenues 15,168 5,560 2,436 1,391 5,763 4,048 (100 ) 34,266 (752 ) 33,514 Expenses Policyholder benefits and claims and policyholder dividends 11,113 2,562 1,229 539 3,456 1,285 (6 ) 20,178 620 20,798 Interest credited to policyholder account balances 710 654 176 49 512 558 — 2,659 615 3,274 Capitalization of DAC (216 ) (848 ) (170 ) (192 ) (57 ) (130 ) (4 ) (1,617 ) — (1,617 ) Amortization of DAC and VOBA 228 581 146 182 213 336 3 1,689 (452 ) 1,237 Amortization of negative VOBA — (67 ) — (8 ) — — — (75 ) (6 ) (81 ) Interest expense on debt 6 — 3 — 20 58 503 590 1 591 Other expenses 1,823 1,770 683 648 710 1,259 151 7,044 449 7,493 Total expenses 13,664 4,652 2,067 1,218 4,854 3,366 647 30,468 1,227 31,695 Provision for income tax expense (benefit) 502 303 72 26 289 155 (554 ) 793 (690 ) 103 Operating earnings $ 1,002 $ 605 $ 297 $ 147 $ 620 $ 527 $ (193 ) 3,005 Adjustments to: Total revenues (752 ) Total expenses (1,227 ) Provision for income tax (expense) benefit 690 Net income (loss) $ 1,716 $ 1,716 Operating Results Six Months Ended June 30, 2016 U.S. Asia Latin America EMEA MetLife Holdings Brighthouse Financial Corporate & Other Total Adjustments Total (In millions) Revenues Premiums $ 10,191 $ 3,339 $ 1,232 $ 1,019 $ 2,219 $ 673 $ 11 $ 18,684 $ 426 $ 19,110 Universal life and investment-type product policy fees 498 720 537 190 716 1,719 (56 ) 4,324 306 4,630 Net investment income 3,025 1,296 498 163 2,952 1,683 (30 ) 9,587 (141 ) 9,446 Other revenues 397 33 15 39 407 432 (352 ) 971 3 974 Net investment gains (losses) — — — — — — — — 281 281 Net derivative gains (losses) — — — — — — — — (764 ) (764 ) Total revenues 14,111 5,388 2,282 1,411 6,294 4,507 (427 ) 33,566 111 33,677 Expenses Policyholder benefits and claims and policyholder dividends 10,316 2,560 1,133 544 3,750 1,711 (36 ) 19,978 613 20,591 Interest credited to policyholder account balances 645 643 164 59 519 580 5 2,615 211 2,826 Capitalization of DAC (232 ) (811 ) (153 ) (207 ) (196 ) (185 ) (7 ) (1,791 ) (105 ) (1,896 ) Amortization of DAC and VOBA 236 590 129 205 417 314 5 1,896 (780 ) 1,116 Amortization of negative VOBA — (121 ) — (7 ) — — — (128 ) (38 ) (166 ) Interest expense on debt 5 — — — 28 64 518 615 3 618 Other expenses 1,860 1,728 633 669 1,460 1,179 (160 ) 7,369 397 7,766 Total expenses 12,830 4,589 1,906 1,263 5,978 3,663 325 30,554 301 30,855 Provision for income tax expense (benefit) 432 235 88 21 82 220 (371 ) 707 (202 ) 505 Operating earnings $ 849 $ 564 $ 288 $ 127 $ 234 $ 624 $ (381 ) 2,305 Adjustments to: Total revenues 111 Total expenses (301 ) Provision for income tax (expense) benefit 202 Net income (loss) $ 2,317 $ 2,317 The following table presents total assets with respect to the Company’s segments, as well as Corporate & Other, at: June 30, 2017 December 31, 2016 (In millions) U.S. $ 257,676 $ 253,683 Asia 130,363 120,656 Latin America 72,458 67,233 EMEA 28,219 25,596 MetLife Holdings 184,817 184,276 Brighthouse Financial 224,933 222,681 Corporate & Other 26,733 24,639 Total $ 925,199 $ 898,764

Insurance (Tables)

Insurance (Tables)	6 Months Ended
	Jun. 30, 2017
Insurance [Abstract]
Guarantees related to Annuity, Universal and Variable Life Contracts	Information regarding the Company’s guarantee exposure, which includes direct and assumed business, but excludes offsets from hedging or ceded reinsurance, if any, was as follows at: June 30, 2017 December 31, 2016 In the At In the At (Dollars in millions) Annuity Contracts (1): Variable Annuity Guarantees: Total account value (2), (3) $ 181,810 $ 91,863 $ 177,895 $ 89,839 Separate account value $ 154,498 $ 88,450 $ 150,118 $ 86,355 Net amount at risk (2) $ 7,382 (4 ) $ 3,896 (5 ) $ 8,679 (4 ) $ 3,834 (5 ) Average attained age of contractholders 67 years 67 years 66 years 66 years Other Annuity Guarantees: Total account value (3) N/A $ 1,397 N/A $ 1,393 Net amount at risk N/A $ 491 (6 ) N/A $ 490 (6 ) Average attained age of contractholders N/A 51 years N/A 50 years June 30, 2017 December 31, 2016 Secondary Paid-Up Secondary Paid-Up (Dollars in millions) Universal and Variable Life Contracts (1): Total account value (3) $ 18,147 $ 3,270 $ 17,689 $ 3,337 Net amount at risk (7) $ 170,470 $ 17,186 $ 172,860 $ 17,785 Average attained age of policyholders 58 years 63 years 58 years 62 years __________________ (1) The Company’s annuity and life contracts with guarantees may offer more than one type of guarantee in each contract. Therefore, the amounts listed above may not be mutually exclusive. (2) Includes amounts, which are not reported on the consolidated balance sheets, from assumed reinsurance of certain variable annuity products from the Company’s former operating joint venture in Japan. (3) Includes the contractholder’s investments in the general account and separate account, if applicable. (4) Defined as the death benefit less the total account value, as of the balance sheet date. It represents the amount of the claim that the Company would incur if death claims were filed on all contracts on the balance sheet date and includes any additional contractual claims associated with riders purchased to assist with covering income taxes payable upon death. (5) Defined as the amount (if any) that would be required to be added to the total account value to purchase a lifetime income stream, based on current annuity rates, equal to the minimum amount provided under the guaranteed benefit. This amount represents the Company’s potential economic exposure to such guarantees in the event all contractholders were to annuitize on the balance sheet date, even though the contracts contain terms that allow annuitization of the guaranteed amount only after the 10th anniversary of the contract, which not all contractholders have achieved. (6) Defined as either the excess of the upper tier, adjusted for a profit margin, less the lower tier, as of the balance sheet date or the amount (if any) that would be required to be added to the total account value to purchase a lifetime income stream, based on current annuity rates, equal to the minimum amount provided under the guaranteed benefit. These amounts represent the Company’s potential economic exposure to such guarantees in the event all contractholders were to annuitize on the balance sheet date. (7) Defined as the guarantee amount less the account value, as of the balance sheet date. It represents the amount of the claim that the Company would incur if death claims were filed on all contracts on the balance sheet date.
Liabilities for Unpaid Claims and Claim Expenses	Rollforward of Claims and Claim Adjustment Expenses Information regarding the liabilities for unpaid claims and claim adjustment expenses was as follows: Six Months 2017 2016 (In millions) Balance at December 31 of prior period $ 18,159 $ 11,388 Less: Reinsurance recoverables 3,058 2,042 Net Balance at December 31 of prior period 15,101 9,346 Cumulative adjustment (1) — 4,988 Net balance, beginning of period 15,101 14,334 Incurred related to: Current period 13,126 12,985 Prior periods (2) 14 28 Total incurred 13,140 13,013 Paid related to: Current period (8,850 ) (8,351 ) Prior periods (3,811 ) (3,772 ) Total paid (12,661 ) (12,123 ) Net balance, end of period 15,580 15,224 Add: Reinsurance recoverables 3,182 2,873 Balance, end of period (included in future policy benefits and other policy-related balances) $ 18,762 $ 18,097 __________________ (1) Reflects the accumulated adjustment, net of reinsurance, upon implementation of the new short-duration contracts guidance which clarified the requirement to include claim information for long-duration contracts. The accumulated adjustment primarily reflects unpaid claim liabilities, net of reinsurance, for long-duration contracts as of the beginning of the period presented. (2) During both the six months ended June 30, 2017 and 2016, as a result of changes in estimates of insured events in the respective prior periods, the claims and claim adjustment expenses associated with prior periods increased due to unfavorable claims experience.

Closed Block (Tables)

Closed Block (Tables)	6 Months Ended
	Jun. 30, 2017
Closed Block Disclosure [Abstract]
Closed block liabilities and assets	Information regarding the closed block liabilities and assets designated to the closed block was as follows at: June 30, 2017 December 31, 2016 (In millions) Closed Block Liabilities Future policy benefits $ 40,567 $ 40,834 Other policy-related balances 187 257 Policyholder dividends payable 476 443 Policyholder dividend obligation 2,237 1,931 Current income tax payable — 4 Other liabilities 240 196 Total closed block liabilities 43,707 43,665 Assets Designated to the Closed Block Investments: Fixed maturity securities available-for-sale, at estimated fair value 27,474 27,220 Equity securities available-for-sale, at estimated fair value 292 100 Mortgage loans 5,919 5,935 Policy loans 4,541 4,553 Real estate and real estate joint ventures 634 655 Other invested assets 809 1,246 Total investments 39,669 39,709 Cash and cash equivalents 99 18 Accrued investment income 466 467 Premiums, reinsurance and other receivables 138 68 Deferred income tax assets 158 177 Total assets designated to the closed block 40,530 40,439 Excess of closed block liabilities over assets designated to the closed block 3,177 3,226 Amounts included in accumulated other comprehensive income (loss) (“AOCI”): Unrealized investment gains (losses), net of income tax 1,814 1,517 Unrealized gains (losses) on derivatives, net of income tax 57 95 Allocated to policyholder dividend obligation, net of income tax (1,454 ) (1,255 ) Total amounts included in AOCI 417 357 Maximum future earnings to be recognized from closed block assets and liabilities $ 3,594 $ 3,583
Closed block policyholder dividend obligation	Information regarding the closed block policyholder dividend obligation was as follows: Six Months Year (In millions) Balance, beginning of period $ 1,931 $ 1,783 Change in unrealized investment and derivative gains (losses) 306 148 Balance, end of period $ 2,237 $ 1,931
Closed block revenues and expenses	Information regarding the closed block revenues and expenses was as follows: Three Months Six Months 2017 2016 2017 2016 (In millions) Revenues Premiums $ 432 $ 444 $ 834 $ 861 Net investment income 452 469 918 949 Net investment gains (losses) (2 ) 12 (10 ) (16 ) Net derivative gains (losses) (10 ) 4 (18 ) (7 ) Total revenues 872 929 1,724 1,787 Expenses Policyholder benefits and claims 614 632 1,182 1,242 Policyholder dividends 247 246 497 491 Other expenses 32 35 64 67 Total expenses 893 913 1,743 1,800 Revenues, net of expenses before provision for income tax expense (benefit) (21 ) 16 (19 ) (13 ) Provision for income tax expense (benefit) (8 ) 6 (8 ) (5 ) Revenues, net of expenses and provision for income tax expense (benefit) $ (13 ) $ 10 $ (11 ) $ (8 )

Investments (Tables)

Investments (Tables)	6 Months Ended
	Jun. 30, 2017
Investments, Debt and Equity Securities [Abstract]
Fixed Maturity and Equity Securities Available-for-Sale	The following table presents the fixed maturity and equity securities AFS by sector. Redeemable preferred stock is reported within U.S. corporate and foreign corporate fixed maturity securities and non-redeemable preferred stock is reported within equity securities. Included within fixed maturity securities are structured securities including residential mortgage-backed securities (“RMBS”), asset-backed securities (“ABS”) and commercial mortgage-backed securities (“CMBS”) (collectively, “Structured Securities”). June 30, 2017 December 31, 2016 Cost or Amortized Cost Gross Unrealized Estimated Fair Value Cost or Amortized Cost Gross Unrealized Estimated Fair Value Gains Temporary Losses OTTI Gains Temporary Losses OTTI (In millions) Fixed maturity securities: U.S. corporate $ 94,759 $ 8,426 $ 586 $ — $ 102,599 $ 94,558 $ 7,351 $ 1,056 $ — $ 100,853 U.S. government and agency 54,356 5,922 399 — 59,879 53,326 4,977 780 — 57,523 Foreign government 54,708 6,712 312 — 61,108 50,923 6,600 385 — 57,138 Foreign corporate 57,709 3,819 1,054 — 60,474 55,676 3,132 1,752 (1 ) 57,057 RMBS 37,355 1,472 334 (39 ) 38,532 36,293 1,244 554 (10 ) 36,993 State and political subdivision 14,234 2,060 40 — 16,254 14,566 1,733 122 1 16,176 ABS 14,088 124 74 3 14,135 13,920 101 141 3 13,877 CMBS 10,821 341 60 (1 ) 11,103 11,092 282 103 (1 ) 11,272 Total fixed maturity securities $ 338,030 $ 28,876 $ 2,859 $ (37 ) $ 364,084 $ 330,354 $ 25,420 $ 4,893 $ (8 ) $ 350,889 Equity securities: Common stock $ 2,280 $ 411 $ 16 $ — $ 2,675 $ 1,927 $ 488 $ 14 $ — $ 2,401 Non-redeemable preferred stock 703 52 15 — 740 817 25 49 — 793 Total equity securities $ 2,983 $ 463 $ 31 $ — $ 3,415 $ 2,744 $ 513 $ 63 $ — $ 3,194 __________________ (1) Noncredit OTTI losses included in AOCI in an unrealized gain position are due to increases in estimated fair value subsequent to initial recognition of noncredit losses on such securities. See also “— Net Unrealized Investment Gains (Losses).”
Available-for-sale fixed maturity securities by contractual maturity date	The amortized cost and estimated fair value of fixed maturity securities, by contractual maturity date, were as follows at June 30, 2017 : Due in One Due After Due After Five Years Through Ten Years Due After Ten Years Structured Securities Total Fixed Maturity Securities (In millions) Amortized cost $ 14,582 $ 71,452 $ 70,413 $ 119,319 $ 62,264 $ 338,030 Estimated fair value $ 14,713 $ 74,867 $ 74,093 $ 136,641 $ 63,770 $ 364,084
Continuous Gross Unrealized Loss and OTTI Loss for Fixed Maturity and Equity Securities Available-for-Sale	The following table presents the estimated fair value and gross unrealized losses of fixed maturity and equity securities AFS in an unrealized loss position, aggregated by sector and by length of time that the securities have been in a continuous unrealized loss position at: June 30, 2017 December 31, 2016 Less than 12 Months Equal to or Greater than 12 Months Less than 12 Months Equal to or Greater than 12 Months Estimated Fair Value Gross Unrealized Losses Estimated Fair Value Gross Unrealized Losses Estimated Fair Value Gross Unrealized Losses Estimated Fair Value Gross Unrealized Losses (Dollars in millions) Fixed maturity securities: U.S. corporate $ 10,077 $ 310 $ 3,305 $ 276 $ 16,147 $ 656 $ 3,684 $ 400 U.S. government and agency 20,004 378 189 21 13,500 760 141 20 Foreign government 6,448 227 1,012 85 6,228 271 924 114 Foreign corporate 7,081 234 6,741 820 11,613 639 6,127 1,112 RMBS 12,033 215 1,753 80 12,943 403 2,618 141 State and political subdivision 1,062 32 97 8 2,636 114 85 9 ABS 2,711 10 1,496 67 2,702 33 2,789 111 CMBS 1,402 22 601 37 2,570 48 735 54 Total fixed maturity securities $ 60,818 $ 1,428 $ 15,194 $ 1,394 $ 68,339 $ 2,924 $ 17,103 $ 1,961 Equity securities: Common stock 331 16 $ 2 $ — $ 105 $ 14 $ 11 $ — Non-redeemable preferred stock 28 — 134 15 196 9 165 40 Total equity securities $ 359 $ 16 $ 136 $ 15 $ 301 $ 23 $ 176 $ 40 Total number of securities in an unrealized loss position 3,981 1,544 5,321 1,790
Disclosure of Mortgage Loans Net of Valuation Allowance	Mortgage loans are summarized as follows at: June 30, 2017 December 31, 2016 Carrying Value % of Carrying Value % of (Dollars in millions) Mortgage loans: Commercial $ 49,549 63.9 % $ 48,035 64.4 % Agricultural 14,877 19.2 14,456 19.4 Residential 12,764 16.4 11,696 15.7 Subtotal (1) 77,190 99.5 74,187 99.5 Valuation allowances (356 ) (0.5 ) (344 ) (0.5 ) Subtotal mortgage loans, net 76,834 99.0 73,843 99.0 Residential — FVO 615 0.8 566 0.8 Commercial mortgage loans held by CSEs — FVO 123 0.2 136 0.2 Total mortgage loans, net $ 77,572 100.0 % $ 74,545 100.0 % __________________ (1) Purchases of mortgage loans were $888 million and $1.8 billion for the three months and six months ended June 30, 2017 , respectively, and $1.2 billion and $1.4 billion for the three months and six months ended June 30, 2016 , respectively.
Disclosure of mortgage loans held-for-investment and valuation allowances by method of evaluation for credit loss	Mortgage loans by portfolio segment, by method of evaluation of credit loss, impaired mortgage loans including those modified in a troubled debt restructuring, and the related valuation allowances, were as follows at: Evaluated Individually for Credit Losses Evaluated Collectively for Credit Losses Impaired Loans Impaired Loans with a Valuation Allowance Impaired Loans without a Valuation Allowance Unpaid Principal Balance Recorded Investment Valuation Unpaid Principal Balance Recorded Recorded Valuation Carrying (In millions) June 30, 2017 Commercial $ — $ — $ — $ — $ — $ 49,549 $ 242 $ — Agricultural 15 13 1 4 4 14,860 45 16 Residential — — — 324 294 12,470 68 294 Total $ 15 $ 13 $ 1 $ 328 $ 298 $ 76,879 $ 355 $ 310 December 31, 2016 Commercial $ — $ — $ — $ 12 $ 12 $ 48,023 $ 234 $ 12 Agricultural 15 13 1 27 27 14,416 43 39 Residential — — — 266 242 11,454 66 242 Total $ 15 $ 13 $ 1 $ 305 $ 281 $ 73,893 $ 343 $ 293
Allowance for Loan and Lease Losses, Provision for Loss, Net	The changes in the valuation allowance, by portfolio segment, were as follows: Six Months 2017 2016 Commercial Agricultural Residential Total Commercial Agricultural Residential Total (In millions) Balance, beginning of period $ 234 $ 44 $ 66 $ 344 $ 217 $ 42 $ 59 $ 318 Provision (release) 8 2 10 20 150 1 7 158 Charge-offs, net of recoveries — — (8 ) (8 ) — (2 ) (7 ) (9 ) Balance, end of period $ 242 $ 46 $ 68 $ 356 $ 367 $ 41 $ 59 $ 467
Schedule of Financing Receivables, Non Accrual Status	The past due and nonaccrual mortgage loans at recorded investment, prior to valuation allowances, by portfolio segment, were as follows at: Past Due Greater than 90 Days Past Due and Still Accruing Interest Nonaccrual June 30, 2017 December 31, 2016 June 30, 2017 December 31, 2016 June 30, 2017 December 31, 2016 (In millions) Commercial $ — $ 3 $ — $ 3 $ — $ — Agricultural 118 127 110 104 10 23 Residential 432 392 26 37 407 355 Total $ 550 $ 522 $ 136 $ 144 $ 417 $ 378
Components of net unrealized investment gains (losses) included in accumulated other comprehensive income (loss)	The components of net unrealized investment gains (losses), included in AOCI, were as follows: June 30, 2017 December 31, 2016 (In millions) Fixed maturity securities $ 25,818 $ 20,300 Fixed maturity securities with noncredit OTTI losses included in AOCI 37 8 Total fixed maturity securities 25,855 20,308 Equity securities 522 485 Derivatives 2,468 2,923 Other 169 23 Subtotal 29,014 23,739 Amounts allocated from: Future policy benefits (2,046 ) (1,114 ) DAC and VOBA related to noncredit OTTI losses recognized in AOCI (3 ) (3 ) DAC, VOBA and DSI (1,750 ) (1,430 ) Policyholder dividend obligation (2,237 ) (1,931 ) Subtotal (6,036 ) (4,478 ) Deferred income tax benefit (expense) related to noncredit OTTI losses recognized in AOCI (11 ) (1 ) Deferred income tax benefit (expense) (7,923 ) (6,623 ) Net unrealized investment gains (losses) 15,044 12,637 Net unrealized investment gains (losses) attributable to noncontrolling interests (6 ) (6 ) Net unrealized investment gains (losses) attributable to MetLife, Inc. $ 15,038 $ 12,631 The changes in net unrealized investment gains (losses) were as follows: Six Months (In millions) Balance, beginning of period $ 12,631 Fixed maturity securities on which noncredit OTTI losses have been recognized 29 Unrealized investment gains (losses) during the period 5,246 Unrealized investment gains (losses) relating to: Future policy benefits (932 ) DAC and VOBA related to noncredit OTTI losses recognized in AOCI — DAC, VOBA and DSI (320 ) Policyholder dividend obligation (306 ) Deferred income tax benefit (expense) related to noncredit OTTI losses recognized in AOCI (10 ) Deferred income tax benefit (expense) (1,300 ) Net unrealized investment gains (losses) 15,038 Net unrealized investment gains (losses) attributable to noncontrolling interests — Balance, end of period $ 15,038 Change in net unrealized investment gains (losses) $ 2,407 Change in net unrealized investment gains (losses) attributable to noncontrolling interests — Change in net unrealized investment gains (losses) attributable to MetLife, Inc. $ 2,407
Securities Lending	Elements of the securities lending program are presented below at: June 30, 2017 December 31, 2016 (In millions) Securities on loan: (1) Amortized cost $ 23,466 $ 24,692 Estimated fair value $ 25,787 $ 26,308 Cash collateral received from counterparties (2) $ 26,440 $ 26,755 Security collateral received from counterparties (3) $ 33 $ 46 Reinvestment portfolio — estimated fair value $ 26,652 $ 26,704 __________________ (1) Included within fixed maturity securities. (2) Included within payables for collateral under securities loaned and other transactions. (3) Security collateral received from counterparties may not be sold or re-pledged, unless the counterparty is in default, and is not reflected on the consolidated financial statements. The cash collateral liability by loaned security type and remaining tenor of the agreements was as follows at: June 30, 2017 December 31, 2016 Remaining Tenor of Securities Lending Agreements Remaining Tenor of Securities Lending Agreements Open (1) 1 Month or Less 1 to 6 Months Total Open (1) 1 Month or Less 1 to 6 Months Total (In millions) Cash collateral liability by loaned security type: U.S. government and agency $ 6,197 $ 12,510 $ 6,783 $ 25,490 $ 6,608 $ 8,403 $ 10,125 $ 25,136 Foreign government — 694 — 694 — 620 144 764 U.S. corporate — — — — — 523 — 523 Agency RMBS — 256 — 256 — — 274 274 Foreign corporate — — — — — 58 — 58 Total $ 6,197 $ 13,460 $ 6,783 $ 26,440 $ 6,608 $ 9,604 $ 10,543 $ 26,755 __________________ (1) The related loaned security could be returned to the Company on the next business day which would require the Company to immediately return the cash collateral.
Repurchase Agreements	Elements of the short-term repurchase agreements are presented below at: June 30, 2017 December 31, 2016 (In millions) Securities on loan: (1) Amortized cost $ 1,836 $ 98 Estimated fair value $ 1,982 $ 113 Cash collateral received from counterparties (2) $ 1,951 $ 102 Reinvestment portfolio — estimated fair value $ 1,963 $ 100 __________________ (1) Included within fixed maturity securities. (2) Included within payables for collateral under securities loaned and other transactions and other liabilities. The cash collateral liability by loaned security type and remaining tenor of the agreements was as follows at: June 30, 2017 December 31, 2016 Remaining Tenor of Repurchase Agreements Remaining Tenor of Repurchase Agreements 1 Month or Less 1 to 6 Months Total 1 Month or Less 1 to 6 Months Total (In millions) Cash collateral liability by loaned security type: U.S. government and agency $ 1,855 $ — $ 1,855 $ 5 $ — $ 5 Foreign government and corporate 44 52 96 46 51 97 Total $ 1,899 $ 52 $ 1,951 $ 51 $ 51 $ 102
Invested Assets on Deposit, Held in Trust and Pledged as Collateral	Invested assets on deposit, held in trust and pledged as collateral are presented below at estimated fair value for all asset classes, except mortgage loans, which are presented at carrying value, at: June 30, 2017 December 31, 2016 (In millions) Invested assets on deposit (regulatory deposits) $ 9,168 $ 9,573 Invested assets held in trust (collateral financing arrangements and reinsurance agreements) 6,481 11,111 Invested assets pledged as collateral 27,152 27,431 Total invested assets on deposit, held in trust and pledged as collateral $ 42,801 $ 48,115 __________________ The Company has assets held in trust and pledged invested assets in connection with various agreements and transactions, including funding agreements (see Notes 4 and 12 of the Notes to the Consolidated Financial Statements included in the 2016 Annual Report), collateral financing arrangements (see Note 13 of the Notes to the Consolidated Financial Statements included in the 2016 Annual Report) and derivative transactions (see Note 7 ). Amounts in the table above include invested assets, and cash and cash equivalents. See Note 3 for information on the termination of the MRSC collateral financing arrangement.
The Components of Net Investment Income	The components of net investment income were as follows: Three Months Six Months 2017 2016 2017 2016 (In millions) Investment income: Fixed maturity securities $ 3,431 $ 3,564 $ 6,851 $ 7,218 Equity securities 35 33 69 70 FVO securities — FVO general account securities (1) 16 10 45 16 Mortgage loans 869 851 1,714 1,658 Policy loans 146 147 291 296 Real estate and real estate joint ventures 184 149 349 306 Other limited partnership interests 243 120 540 166 Cash, cash equivalents and short-term investments 67 43 126 83 Operating joint ventures 5 11 7 23 Other 57 51 136 92 Subtotal 5,053 4,979 10,128 9,928 Less: Investment expenses 310 285 607 581 Subtotal, net 4,743 4,694 9,521 9,347 FVO securities — FVO contractholder-directed unit-linked investments (1) 214 191 630 94 FVO CSEs — interest income — commercial mortgage loans 2 2 4 5 Subtotal 216 193 634 99 Net investment income $ 4,959 $ 4,887 $ 10,155 $ 9,446 __________________ (1) Changes in estimated fair value subsequent to purchase for securities still held as of the end of the respective periods included in net investment income were $119 million and $449 million for the three months and six months ended June 30, 2017 , respectively, and $79 million and ($121) million for the three months and six months ended June 30, 2016 , respectively. The amounts for the three months and six months ended June 30, 2016 included $7 million and $3 million , respectively, related to actively traded securities.
The components of net investment gains (losses)	The components of net investment gains (losses) were as follows: Three Months Six Months 2017 2016 2017 2016 (In millions) Total gains (losses) on fixed maturity securities: Total OTTI losses recognized — by sector and industry: U.S. and foreign corporate securities — by industry: Industrial $ — $ (8 ) $ — $ (79 ) Communications — — — (3 ) Total U.S. and foreign corporate securities — (8 ) — (82 ) RMBS — (4 ) — (8 ) ABS — (2 ) — (2 ) State and political subdivision (3 ) — (3 ) — OTTI losses on fixed maturity securities recognized in earnings (3 ) (14 ) (3 ) (92 ) Fixed maturity securities — net gains (losses) on sales and disposals 45 165 5 263 Total gains (losses) on fixed maturity securities 42 151 2 171 Total gains (losses) on equity securities: Total OTTI losses recognized — by sector: Common stock (5 ) (16 ) (12 ) (67 ) Non-redeemable preferred stock — — (1 ) — OTTI losses on equity securities recognized in earnings (5 ) (16 ) (13 ) (67 ) Equity securities — net gains (losses) on sales and disposals 7 13 50 19 Total gains (losses) on equity securities 2 (3 ) 37 (48 ) Mortgage loans (16 ) (98 ) (31 ) (162 ) Real estate and real estate joint ventures 271 45 270 47 Other limited partnership interests (12 ) (14 ) (29 ) (41 ) Other (69 ) (57 ) (127 ) (75 ) Subtotal 218 24 122 (108 ) FVO CSEs: Commercial mortgage loans — (1 ) (1 ) — Securities — — — 1 Long-term debt — related to commercial mortgage loans (1 ) — — — Non-investment portfolio gains (losses) (113 ) 243 (9 ) 388 Subtotal (114 ) 242 (10 ) 389 Total net investment gains (losses) $ 104 $ 266 $ 112 $ 281
Proceeds from sales or disposals of fixed maturity and equity securities and the components of fixed maturity and equity securities net investment gains and losses	Proceeds from sales or disposals of fixed maturity and equity securities and the components of fixed maturity and equity securities net investment gains (losses) were as shown in the table below. Three Months 2017 2016 2017 2016 Fixed Maturity Securities Equity Securities (In millions) Proceeds $ 15,106 $ 26,267 $ 279 $ 28 Gross investment gains $ 129 $ 283 $ 10 $ 14 Gross investment losses (84 ) (118 ) (3 ) (1 ) OTTI losses (3 ) (14 ) (5 ) (16 ) Net investment gains (losses) $ 42 $ 151 $ 2 $ (3 ) Six Months 2017 2016 2017 2016 Fixed Maturity Securities Equity Securities (In millions) Proceeds $ 31,543 $ 58,261 $ 399 $ 87 Gross investment gains $ 279 $ 715 $ 57 $ 24 Gross investment losses (274 ) (452 ) (7 ) (5 ) OTTI losses (3 ) (92 ) (13 ) (67 ) Net investment gains (losses) $ 2 $ 171 $ 37 $ (48 )
Rollforward of the Cumulative Credit Loss Component of OTTI income (loss)	The table below presents a rollforward of the cumulative credit loss component of OTTI loss recognized in earnings on fixed maturity securities still held for which a portion of the OTTI loss was recognized in other comprehensive income (loss) (“OCI”): Three Months Six Months 2017 2016 2017 2016 (In millions) Balance, beginning of period $ 179 $ 270 $ 215 $ 277 Additions: Additional impairments — credit loss OTTI on securities previously impaired — 6 — 8 Reductions: Sales (maturities, pay downs or prepayments) of securities previously impaired as credit loss OTTI (6 ) (18 ) (42 ) (27 ) Balance, end of period $ 173 $ 258 $ 173 $ 258
Variable Interest Entity, Primary Beneficiary [Member]
Variable Interest Entity [Line Items]
Schedule of Variable Interest Entities [Table Text Block]	The following table presents the total assets and total liabilities relating to investment-related VIEs for which the Company has concluded that it is the primary beneficiary and which are consolidated at: June 30, 2017 December 31, 2016 Total Total Total Total (In millions) MRSC (collateral financing arrangement) (1) $ — $ — $ 3,422 $ — CSEs (assets (primarily loans) and liabilities (primarily debt)) (2) 136 28 146 35 Other investments (3) 49 — 50 — Total $ 185 $ 28 $ 3,618 $ 35 __________________ (1) See Note 13 of the Notes to the Consolidated Financial Statements included in the 2016 Annual Report for a description of the MRSC collateral financing arrangement. This arrangement was terminated in April 2017. See Note 3 for information regarding the arrangement and disbursement of related assets. These assets historically consisted of fixed maturity securities, short-term investments and cash equivalents, but were transitioned into short-term investments and cash equivalents prior to termination of the arrangement. (2) The Company consolidates entities that are structured as CMBS and as collateralized debt obligations. The assets of these entities can only be used to settle their respective liabilities, and under no circumstances is the Company liable for any principal or interest shortfalls should any arise. (3) Other investments is comprised of other invested assets and other limited partnership interests.
Variable Interest Entity, Not Primary Beneficiary [Member]
Variable Interest Entity [Line Items]
Schedule of Variable Interest Entities [Table Text Block]	The carrying amount and maximum exposure to loss relating to VIEs in which the Company holds a significant variable interest but is not the primary beneficiary and which have not been consolidated were as follows at: June 30, 2017 December 31, 2016 Carrying Maximum Carrying Maximum (In millions) Fixed maturity securities AFS: Structured Securities (2) $ 61,218 $ 61,218 $ 59,773 $ 59,773 U.S. and foreign corporate 2,788 2,788 2,845 2,845 Other limited partnership interests 6,344 12,136 6,208 11,282 Other invested assets 2,302 2,762 2,261 2,837 Other (3) 382 400 252 271 Total $ 73,034 $ 79,304 $ 71,339 $ 77,008 __________________ (1) The maximum exposure to loss relating to fixed maturity securities AFS and equity securities AFS is equal to their carrying amounts or the carrying amounts of retained interests. The maximum exposure to loss relating to other limited partnership interests, mortgage loans and real estate joint ventures is equal to the carrying amounts plus any unfunded commitments. For certain of its investments in other invested assets, the Company’s return is in the form of income tax credits which are guaranteed by creditworthy third parties. For such investments, the maximum exposure to loss is equal to the carrying amounts plus any unfunded commitments, reduced by income tax credits guaranteed by third parties of $137 million and $150 million at June 30, 2017 and December 31, 2016 , respectively. Such a maximum loss would be expected to occur only upon bankruptcy of the issuer or investee. (2) For these variable interests, the Company’s involvement is limited to that of a passive investor in mortgage-backed or asset-backed securities issued by trusts that do not have substantial equity. (3) Other is primarily comprised of common stock and real estate joint ventures.
Commercial
Mortgage Loans on Real Estate [Line Items]
Disclosure of the mortgage loans portfolio segment by the recorded investment, prior to valuation allowances, by credit quality indicator categories	The credit quality of commercial mortgage loans was as follows at: Recorded Investment Estimated % of Total Debt Service Coverage Ratios % of Total > 1.20x 1.00x - 1.20x < 1.00x Total (Dollars in millions) June 30, 2017 Loan-to-value ratios: Less than 65% $ 43,059 $ 1,693 $ 236 $ 44,988 90.8 % $ 46,034 91.0 % 65% to 75% 3,658 250 210 4,118 8.3 4,113 8.2 76% to 80% 57 148 67 272 0.6 260 0.5 Greater than 80% — — 171 171 0.3 166 0.3 Total $ 46,774 $ 2,091 $ 684 $ 49,549 100 % $ 50,573 100 % December 31, 2016 Loan-to-value ratios: Less than 65% $ 41,811 $ 1,307 $ 874 $ 43,992 91.6 % $ 44,459 91.8 % 65% to 75% 3,335 — 221 3,556 7.4 3,488 7.2 76% to 80% 229 — — 229 0.5 215 0.5 Greater than 80% 142 41 75 258 0.5 250 0.5 Total $ 45,517 $ 1,348 $ 1,170 $ 48,035 100.0 % $ 48,412 100.0 %
Agricultural
Mortgage Loans on Real Estate [Line Items]
Disclosure of the mortgage loans portfolio segment by the recorded investment, prior to valuation allowances, by credit quality indicator categories	The credit quality of agricultural mortgage loans was as follows at: June 30, 2017 December 31, 2016 Recorded Investment % of Total Recorded Investment % of Total (Dollars in millions) Loan-to-value ratios: Less than 65% $ 14,131 95.0 % $ 13,872 96.0 % 65% to 75% 606 4.1 479 3.3 76% to 80% 127 0.8 17 0.1 Greater than 80% 13 0.1 88 0.6 Total $ 14,877 100.0 % $ 14,456 100.0 %
Residential
Mortgage Loans on Real Estate [Line Items]
Disclosure of the mortgage loans portfolio segment by the recorded investment, prior to valuation allowances, by credit quality indicator categories	The credit quality of residential mortgage loans was as follows at: June 30, 2017 December 31, 2016 Recorded Investment % of Total Recorded Investment % of Total (Dollars in millions) Performance indicators: Performing $ 12,332 96.6 % $ 11,304 96.6 % Nonperforming 432 3.4 392 3.4 Total $ 12,764 100.0 % $ 11,696 100.0 %

Derivatives (Tables)

Derivatives (Tables)	6 Months Ended
	Jun. 30, 2017
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Schedule of Derivatives Instruments Statements of Financial Performance and Financial Position, Location	The following table presents the primary underlying risk exposure, gross notional amount, and estimated fair value of the Company’s derivatives, excluding embedded derivatives, held at: June 30, 2017 December 31, 2016 Primary Underlying Risk Exposure Gross Estimated Fair Value Gross Estimated Fair Value Assets Liabilities Assets Liabilities (In millions) Derivatives Designated as Hedging Instruments: Fair value hedges: Interest rate swaps Interest rate $ 4,347 $ 2,326 $ 5 $ 5,331 $ 2,262 $ 6 Foreign currency swaps Foreign currency exchange rate 632 48 — 1,221 34 224 Foreign currency forwards Foreign currency exchange rate 2,175 — 59 1,085 — 54 Subtotal 7,154 2,374 64 7,637 2,296 284 Cash flow hedges: Interest rate swaps Interest rate 3,886 331 16 2,085 332 34 Interest rate forwards Interest rate 3,542 — 210 4,032 — 370 Foreign currency swaps Foreign currency exchange rate 30,168 1,640 1,778 28,173 2,079 2,065 Subtotal 37,596 1,971 2,004 34,290 2,411 2,469 Foreign operations hedges: Foreign currency forwards Foreign currency exchange rate 1,932 7 51 1,394 47 5 Currency options Foreign currency exchange rate 8,236 34 114 8,878 148 45 Subtotal 10,168 41 165 10,272 195 50 Total qualifying hedges 54,918 4,386 2,233 52,199 4,902 2,803 Derivatives Not Designated or Not Qualifying as Hedging Instruments: Interest rate swaps Interest rate 82,022 3,396 1,465 81,524 6,017 3,328 Interest rate floors Interest rate 7,201 136 — 14,201 187 9 Interest rate caps Interest rate 81,560 72 2 90,400 137 2 Interest rate futures Interest rate 5,143 24 2 6,081 12 12 Interest rate options Interest rate 32,884 822 48 20,854 764 1 Interest rate forwards Interest rate 358 — 34 613 — 25 Interest rate total return swaps Interest rate 4,198 26 389 5,425 2 738 Synthetic GICs Interest rate 6,305 — — 5,566 — — Foreign currency swaps Foreign currency exchange rate 13,031 1,071 451 12,912 1,600 466 Foreign currency forwards Foreign currency exchange rate 17,206 103 572 15,580 126 977 Currency futures Foreign currency exchange rate 869 — 4 915 — — Currency options Foreign currency exchange rate 2,481 51 — 3,615 195 17 Credit default swaps — purchased Credit 1,955 8 42 2,038 14 40 Credit default swaps — written Credit 13,377 259 4 12,645 189 9 Equity futures Equity market 7,904 12 3 12,494 68 3 Equity index options Equity market 77,608 1,543 2,024 54,028 1,323 1,458 Equity variance swaps Equity market 23,231 266 866 23,157 223 756 Equity total return swaps Equity market 2,630 3 78 3,901 2 160 Total non-designated or nonqualifying derivatives 379,963 7,792 5,984 365,949 10,859 8,001 Total $ 434,881 $ 12,178 $ 8,217 $ 418,148 $ 15,761 $ 10,804 The following table presents earned income on derivatives: Three Months Six Months 2017 2016 2017 2016 (In millions) Qualifying hedges: Net investment income $ 76 $ 73 $ 157 $ 130 Interest credited to policyholder account balances (14 ) 1 (20 ) 7 Other expenses (2 ) (4 ) (5 ) (6 ) Nonqualifying hedges: Net investment income — (1 ) — (1 ) Net derivative gains (losses) 212 248 500 531 Policyholder benefits and claims 5 6 11 11 Total $ 277 $ 323 $ 643 $ 672
Components of Net Derivatives Gains (Losses)	The components of net derivative gains (losses) were as follows: Three Months Six Months 2017 2016 2017 2016 (In millions) Freestanding derivatives and hedging gains (losses) (1) $ (506 ) $ 2,525 $ (2,010 ) $ 5,029 Embedded derivatives gains (losses) 69 (4,624 ) 647 (5,793 ) Total net derivative gains (losses) $ (437 ) $ (2,099 ) $ (1,363 ) $ (764 ) __________________ (1) Includes foreign currency transaction gains (losses) on hedged items in cash flow and nonqualifying hedging relationships, which are not presented elsewhere in this note.
Amount and location of gains (losses) recognized in income for derivatives that are not designated or qualifying as hedging instruments	The following table presents the amount and location of gains (losses) recognized in income for derivatives that were not designated or not qualifying as hedging instruments: Net Net Policyholder (In millions) Three Months Ended June 30, 2017 Interest rate derivatives $ 277 $ (2 ) $ (12 ) Foreign currency exchange rate derivatives (566 ) — 2 Credit derivatives — purchased (7 ) — — Credit derivatives — written 49 — — Equity derivatives (705 ) (2 ) (136 ) Total $ (952 ) $ (4 ) $ (146 ) Three Months Ended June 30, 2016 Interest rate derivatives $ 1,657 $ — $ 55 Foreign currency exchange rate derivatives 1,196 — (11 ) Credit derivatives — purchased (22 ) (10 ) — Credit derivatives — written 3 9 — Equity derivatives (213 ) (3 ) (65 ) Total $ 2,621 $ (4 ) $ (21 ) Six Months Ended June 30, 2017 Interest rate derivatives $ (382 ) $ — $ (11 ) Foreign currency exchange rate derivatives (223 ) — 2 Credit derivatives — purchased (15 ) — — Credit derivatives — written 87 — — Equity derivatives (1,998 ) (5 ) (392 ) Total $ (2,531 ) $ (5 ) $ (401 ) Six Months Ended June 30, 2016 Interest rate derivatives $ 3,629 $ — $ 97 Foreign currency exchange rate derivatives 1,719 — (12 ) Credit derivatives — purchased (27 ) — — Credit derivatives — written (3 ) — — Equity derivatives (260 ) (14 ) (33 ) Total $ 5,058 $ (14 ) $ 52 __________________ (1) Changes in estimated fair value related to economic hedges of equity method investments in joint ventures, derivatives held in relation to trading portfolios and derivatives held within contractholder-directed unit-linked investments. (2) Changes in estimated fair value related to economic hedges of variable annuity guarantees included in future policy benefits.
Net derivatives gains (losses) recognized on fair value derivatives and the related hedged items	The Company recognizes gains and losses on derivatives and the related hedged items in fair value hedges within net derivative gains (losses). The following table presents the amount of such net derivative gains (losses): Derivatives in Fair Value Hedging Relationships Hedged Items in Fair Value Hedging Relationships Net Derivative Gains (Losses) Recognized for Derivatives Net Derivative Gains (Losses) Recognized for Hedged Items Ineffectiveness Recognized in Net Derivative Gains (Losses) (In millions) Three Months Ended June 30, 2017 Interest rate swaps: Fixed maturity securities $ — $ (1 ) $ (1 ) Policyholder liabilities (1) 52 18 70 Foreign currency swaps: Foreign-denominated fixed maturity securities (2 ) 3 1 Foreign-denominated policyholder account balances (2) 45 (26 ) 19 Foreign currency forwards: Foreign-denominated fixed maturity securities (21 ) 19 (2 ) Total $ 74 $ 13 $ 87 Three Months Ended June 30, 2016 Interest rate swaps: Fixed maturity securities $ (3 ) $ — $ (3 ) Policyholder liabilities (1) 197 (200 ) (3 ) Foreign currency swaps: Foreign-denominated fixed maturity securities 7 (8 ) (1 ) Foreign-denominated policyholder account balances (2) (51 ) 48 (3 ) Foreign currency forwards: Foreign-denominated fixed maturity securities 137 (126 ) 11 Total $ 287 $ (286 ) $ 1 Six Months Ended June 30, 2017 Interest rate swaps: Fixed maturity securities $ 1 $ (2 ) $ (1 ) Policyholder liabilities (1) (1 ) 70 69 Foreign currency swaps: Foreign-denominated fixed maturity securities (5 ) 6 1 Foreign-denominated policyholder account balances (2) 46 (24 ) 22 Foreign currency forwards: Foreign-denominated fixed maturity securities 24 (22 ) 2 Total $ 65 $ 28 $ 93 Six Months Ended June 30, 2016 Interest rate swaps: Fixed maturity securities $ (11 ) $ 7 $ (4 ) Policyholder liabilities (1) 543 (548 ) (5 ) Foreign currency swaps: Foreign-denominated fixed maturity securities 6 (6 ) — Foreign-denominated policyholder account balances (2) (26 ) 23 (3 ) Foreign currency forwards: Foreign-denominated fixed maturity securities 276 (254 ) 22 Total $ 788 $ (778 ) $ 10 __________________ (1) Fixed rate liabilities reported in policyholder account balances or future policy benefits. (2) Fixed rate or floating rate liabilities.
Derivatives and Non-Derivative Hedging Instruments in Net Investment Hedging Relationships	The following table presents the effects of derivatives in net investment hedging relationships on the consolidated statements of operations and comprehensive income (loss) and the consolidated statements of equity: Derivatives in Net Investment Hedging Relationships (1), (2) Amount of Gains (Losses) Deferred in AOCI (In millions) Three Months Ended June 30, 2017 Foreign currency forwards $ (31 ) Currency options (2 ) Total $ (33 ) Three Months Ended June 30, 2016 Foreign currency forwards $ (104 ) Currency options (146 ) Total $ (250 ) Six Months Ended June 30, 2017 Foreign currency forwards $ (126 ) Currency options (233 ) Total $ (359 ) Six Months Ended June 30, 2016 Foreign currency forwards $ (335 ) Currency options (314 ) Total $ (649 ) __________________ (1) During both the three months and six months ended June 30, 2017 and 2016 , there were no sales or substantial liquidations of net investments in foreign operations that would have required the reclassification of gains or losses from AOCI into earnings. (2) There was no ineffectiveness recognized for the Company’s hedges of net investments in foreign operations. All components of each derivative’s gain or loss were included in the assessment of hedge effectiveness.
Schedule of estimated fair value, maximum amount of future payments and weighted average years to maturity of written credit default swaps	The following table presents the estimated fair value, maximum amount of future payments and weighted average years to maturity of written credit default swaps at: June 30, 2017 December 31, 2016 Rating Agency Designation of Referenced Credit Obligations (1) Estimated Fair Value of Credit Default Swaps Maximum Weighted Estimated Fair Value of Credit Default Swaps Maximum Weighted (Dollars in millions) Aaa/Aa/A Single name credit default swaps (3) $ 8 $ 470 2.6 $ 6 $ 494 3.0 Credit default swaps referencing indices 52 2,800 3.2 42 2,768 3.6 Subtotal 60 3,270 3.1 48 3,262 3.6 Baa Single name credit default swaps (3) 9 806 2.1 7 931 2.3 Credit default swaps referencing indices 163 8,731 5.1 106 7,946 5.0 Subtotal 172 9,537 4.8 113 8,877 4.7 Ba Single name credit default swaps (3) (2 ) 180 3.7 (2 ) 155 4.0 Credit default swaps referencing indices — — — — — — Subtotal (2 ) 180 3.7 (2 ) 155 4.0 B Single name credit default swaps (3) 2 60 1.5 1 70 1.8 Credit default swaps referencing indices 23 330 5.0 20 281 5.0 Subtotal 25 390 4.4 21 351 4.3 Total $ 255 $ 13,377 4.4 $ 180 $ 12,645 4.4 __________________ (1) The rating agency designations are based on availability and the midpoint of the applicable ratings among Moody’s Investors Service (“Moody’s”), Standard & Poor’s Global Ratings (“S&P”) and Fitch Ratings. If no rating is available from a rating agency, then an internally developed rating is used. (2) The weighted average years to maturity of the credit default swaps is calculated based on weighted average gross notional amounts. (3) Single name credit default swaps may be referenced to the credit of corporations, foreign governments, or state and political subdivisions.
Estimated Fair Value of Derivative Assets and Liabilities after Master Netting Agreements and Cash Collateral	The estimated fair values of the Company’s net derivative assets and net derivative liabilities after the application of master netting agreements and collateral were as follows at: June 30, 2017 December 31, 2016 Derivatives Subject to a Master Netting Arrangement or a Similar Arrangement (1) Assets Liabilities Assets Liabilities (In millions) Gross estimated fair value of derivatives: OTC-bilateral (1) $ 11,636 $ 7,819 $ 13,387 $ 8,650 OTC-cleared (1), (6) 627 352 2,543 2,047 Exchange-traded 36 9 80 15 Total gross estimated fair value of derivatives (1) 12,299 8,180 16,010 10,712 Amounts offset on the consolidated balance sheets — — — — Estimated fair value of derivatives presented on the consolidated balance sheets (1), (6) 12,299 8,180 16,010 10,712 Gross amounts not offset on the consolidated balance sheets: Gross estimated fair value of derivatives: (2) OTC-bilateral (5,311 ) (5,311 ) (6,018 ) (6,018 ) OTC-cleared (70 ) (70 ) (1,068 ) (1,068 ) Exchange-traded (2 ) (2 ) (5 ) (5 ) Cash collateral: (3), (4) OTC-bilateral (4,369 ) (1 ) (4,897 ) (84 ) OTC-cleared (555 ) (223 ) (1,427 ) (974 ) Exchange-traded — (1 ) — (9 ) Securities collateral: (5) OTC-bilateral (1,889 ) (2,334 ) (2,069 ) (2,516 ) OTC-cleared — (55 ) — — Exchange-traded — (6 ) — — Net amount after application of master netting agreements and collateral $ 103 $ 177 $ 526 $ 38 __________________ (1) At June 30, 2017 and December 31, 2016 , derivative assets included income or (expense) accruals reported in accrued investment income or in other liabilities of $121 million and $249 million , respectively, and derivative liabilities included (income) or expense accruals reported in accrued investment income or in other liabilities of ($37) million and ($92) million , respectively. (2) Estimated fair value of derivatives is limited to the amount that is subject to set-off and includes income or expense accruals. (3) Cash collateral received by the Company for OTC-bilateral and OTC-cleared derivatives is included in cash and cash equivalents, short-term investments or in fixed maturity securities, and the obligation to return it is included in payables for collateral under securities loaned and other transactions on the balance sheet. (4) The receivable for the return of cash collateral provided by the Company is inclusive of initial margin on exchange-traded and OTC-cleared derivatives and is included in premiums, reinsurance and other receivables on the balance sheet. The amount of cash collateral offset in the table above is limited to the net estimated fair value of derivatives after application of netting agreements. At June 30, 2017 and December 31, 2016 , the Company received excess cash collateral of $495 million and $168 million , respectively, and provided excess cash collateral of $361 million and $486 million , respectively, which is not included in the table above due to the foregoing limitation. (5) Securities collateral received by the Company is held in separate custodial accounts and is not recorded on the balance sheet. Subject to certain constraints, the Company is permitted by contract to sell or re-pledge this collateral, but at June 30, 2017 , none of the collateral had been sold or re-pledged. Securities collateral pledged by the Company is reported in fixed maturity securities on the balance sheet. Subject to certain constraints, the counterparties are permitted by contract to sell or re-pledge this collateral. The amount of securities collateral offset in the table above is limited to the net estimated fair value of derivatives after application of netting agreements and cash collateral. At June 30, 2017 and December 31, 2016 , the Company received excess securities collateral with an estimated fair value of $349 million and $217 million , respectively, for its OTC-bilateral derivatives, which are not included in the table above due to the foregoing limitation. At June 30, 2017 and December 31, 2016 , the Company provided excess securities collateral with an estimated fair value of $320 million and $297 million , respectively, for its OTC-bilateral derivatives, and $676 million and $1.2 billion , respectively, for its OTC-cleared derivatives, and $230 million and $569 million , respectively, for its exchange-traded derivatives, which are not included in the table above due to the foregoing limitation. (6) Effective January 3, 2017, the CME amended its rulebook, resulting in the characterization of variation margin transfers as settlement payments, as opposed to adjustments to collateral. See Note 1 for further information on the CME amendments.
Estimated Fair Value of Derivative Assets and Liabilities after Master Netting Agreements and Cash Collateral	The estimated fair values of the Company’s net derivative assets and net derivative liabilities after the application of master netting agreements and collateral were as follows at: June 30, 2017 December 31, 2016 Derivatives Subject to a Master Netting Arrangement or a Similar Arrangement (1) Assets Liabilities Assets Liabilities (In millions) Gross estimated fair value of derivatives: OTC-bilateral (1) $ 11,636 $ 7,819 $ 13,387 $ 8,650 OTC-cleared (1), (6) 627 352 2,543 2,047 Exchange-traded 36 9 80 15 Total gross estimated fair value of derivatives (1) 12,299 8,180 16,010 10,712 Amounts offset on the consolidated balance sheets — — — — Estimated fair value of derivatives presented on the consolidated balance sheets (1), (6) 12,299 8,180 16,010 10,712 Gross amounts not offset on the consolidated balance sheets: Gross estimated fair value of derivatives: (2) OTC-bilateral (5,311 ) (5,311 ) (6,018 ) (6,018 ) OTC-cleared (70 ) (70 ) (1,068 ) (1,068 ) Exchange-traded (2 ) (2 ) (5 ) (5 ) Cash collateral: (3), (4) OTC-bilateral (4,369 ) (1 ) (4,897 ) (84 ) OTC-cleared (555 ) (223 ) (1,427 ) (974 ) Exchange-traded — (1 ) — (9 ) Securities collateral: (5) OTC-bilateral (1,889 ) (2,334 ) (2,069 ) (2,516 ) OTC-cleared — (55 ) — — Exchange-traded — (6 ) — — Net amount after application of master netting agreements and collateral $ 103 $ 177 $ 526 $ 38 __________________ (1) At June 30, 2017 and December 31, 2016 , derivative assets included income or (expense) accruals reported in accrued investment income or in other liabilities of $121 million and $249 million , respectively, and derivative liabilities included (income) or expense accruals reported in accrued investment income or in other liabilities of ($37) million and ($92) million , respectively. (2) Estimated fair value of derivatives is limited to the amount that is subject to set-off and includes income or expense accruals. (3) Cash collateral received by the Company for OTC-bilateral and OTC-cleared derivatives is included in cash and cash equivalents, short-term investments or in fixed maturity securities, and the obligation to return it is included in payables for collateral under securities loaned and other transactions on the balance sheet. (4) The receivable for the return of cash collateral provided by the Company is inclusive of initial margin on exchange-traded and OTC-cleared derivatives and is included in premiums, reinsurance and other receivables on the balance sheet. The amount of cash collateral offset in the table above is limited to the net estimated fair value of derivatives after application of netting agreements. At June 30, 2017 and December 31, 2016 , the Company received excess cash collateral of $495 million and $168 million , respectively, and provided excess cash collateral of $361 million and $486 million , respectively, which is not included in the table above due to the foregoing limitation. (5) Securities collateral received by the Company is held in separate custodial accounts and is not recorded on the balance sheet. Subject to certain constraints, the Company is permitted by contract to sell or re-pledge this collateral, but at June 30, 2017 , none of the collateral had been sold or re-pledged. Securities collateral pledged by the Company is reported in fixed maturity securities on the balance sheet. Subject to certain constraints, the counterparties are permitted by contract to sell or re-pledge this collateral. The amount of securities collateral offset in the table above is limited to the net estimated fair value of derivatives after application of netting agreements and cash collateral. At June 30, 2017 and December 31, 2016 , the Company received excess securities collateral with an estimated fair value of $349 million and $217 million , respectively, for its OTC-bilateral derivatives, which are not included in the table above due to the foregoing limitation. At June 30, 2017 and December 31, 2016 , the Company provided excess securities collateral with an estimated fair value of $320 million and $297 million , respectively, for its OTC-bilateral derivatives, and $676 million and $1.2 billion , respectively, for its OTC-cleared derivatives, and $230 million and $569 million , respectively, for its exchange-traded derivatives, which are not included in the table above due to the foregoing limitation. (6) Effective January 3, 2017, the CME amended its rulebook, resulting in the characterization of variation margin transfers as settlement payments, as opposed to adjustments to collateral. See Note 1 for further information on the CME amendments.
Derivative Instruments, Gain (Loss) [Line Items]
Schedule of Cash Flow Hedging Instruments, Statements of Financial Performance and Financial Position, Location	The following table presents the effects of derivatives in cash flow hedging relationships on the consolidated statements of operations and comprehensive income (loss) and the consolidated statements of equity: Derivatives in Cash Flow Hedging Relationships Amount of Gains (Losses) Deferred in AOCI on Derivatives Amount and Location of Gains (Losses) Reclassified from AOCI into Income (Loss) Amount and Location (Effective Portion) (Effective Portion) (Ineffective Portion) Net Derivative Gains (Losses) Net Investment Income Other Expenses Net Derivative Gains (Losses) (In millions) Three Months Ended June 30, 2017 Interest rate swaps $ 73 $ 6 $ 4 $ — $ 6 Interest rate forwards 94 2 2 1 (1 ) Foreign currency swaps (174 ) 414 (1 ) — (1 ) Credit forwards — 1 — — — Total $ (7 ) $ 423 $ 5 $ 1 $ 4 Three Months Ended June 30, 2016 Interest rate swaps $ 140 $ 18 $ 4 $ — $ 1 Interest rate forwards 38 (1 ) 2 1 — Foreign currency swaps 622 (269 ) (1 ) — 4 Credit forwards — 3 — — — Total $ 800 $ (249 ) $ 5 $ 1 $ 5 Six Months Ended June 30, 2017 Interest rate swaps $ 78 $ 14 $ 9 $ — $ 7 Interest rate forwards 138 (2 ) 3 1 (1 ) Foreign currency swaps (13 ) 632 (1 ) 1 1 Credit forwards — 1 — — — Total $ 203 $ 645 $ 11 $ 2 $ 7 Six Months Ended June 30, 2016 Interest rate swaps $ 353 $ 28 $ 7 $ — $ — Interest rate forwards 47 1 3 1 — Foreign currency swaps 1,096 37 (1 ) 1 2 Credit forwards — 3 — — — Total $ 1,496 $ 69 $ 9 $ 2 $ 2
Schedule of Derivative Instruments	The following table presents the estimated fair value of the Company’s OTC-bilateral derivatives that are in a net liability position after considering the effect of netting agreements, together with the estimated fair value and balance sheet location of the collateral pledged. The table also presents the incremental collateral that MetLife, Inc. would be required to provide if there was a one-notch downgrade in MetLife, Inc.’s senior unsecured debt rating at the reporting date or if the Company’s credit or financial strength rating, as applicable, sustained a downgrade to a level that triggered full overnight collateralization or termination of the derivative position at the reporting date. OTC-bilateral derivatives that are not subject to collateral agreements are excluded from this table. June 30, 2017 December 31, 2016 Derivatives Derivatives Total Derivatives Subject to Credit- Contingent Provisions Derivatives Total (In millions) Estimated Fair Value of Derivatives in a Net Liability Position (1) $ 2,483 $ 25 $ 2,508 $ 2,607 $ 25 $ 2,632 Estimated Fair Value of Collateral Provided: Fixed maturity securities $ 2,572 $ 22 $ 2,594 $ 2,742 $ 31 $ 2,773 Cash $ 10 $ — $ 10 $ 91 $ — $ 91 Estimated Fair Value of Incremental Collateral Provided Upon: One-notch downgrade in the Company’s credit or financial strength rating, as applicable $ 5 $ — $ 5 $ 6 $ — $ 6 Downgrade in the Company’s credit or financial strength rating, as applicable, to a level that triggers full overnight collateralization or termination of the derivative position $ 5 $ — $ 5 $ 9 $ — $ 9 __________________ (1) After taking into consideration the existence of netting agreements.
Embedded Derivative Financial Instruments [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Schedule of Cash Flow Hedging Instruments, Statements of Financial Performance and Financial Position, Location	The following table presents changes in estimated fair value related to embedded derivatives: Three Months Six Months 2017 2016 2017 2016 (In millions) Net derivative gains (losses) (1) $ 69 $ (4,624 ) $ 647 $ (5,793 ) Policyholder benefits and claims $ 14 $ 60 $ (1 ) $ 105 __________________ (1) The valuation of guaranteed minimum benefits includes a nonperformance risk adjustment. The amounts included in net derivative gains (losses) in connection with this adjustment were ($138) million and ($181) million for the three months and six months ended June 30, 2017 , respectively, and $1.1 billion and $1.5 billion for the three months and six months ended June 30, 2016 , respectively.
Schedule of Derivative Instruments	The following table presents the estimated fair value and balance sheet location of the Company’s embedded derivatives that have been separated from their host contracts at: Balance Sheet Location June 30, 2017 December 31, 2016 (In millions) Embedded derivatives within asset host contracts: Ceded guaranteed minimum benefits Premiums, reinsurance and other receivables $ 388 $ 380 Options embedded in debt or equity securities Investments (219 ) (137 ) Embedded derivatives within asset host contracts $ 169 $ 243 Embedded derivatives within liability host contracts: Direct guaranteed minimum benefits Policyholder account balances $ 2,196 $ 2,720 Assumed guaranteed minimum benefits Policyholder account balances 1,280 1,205 Funds withheld on ceded reinsurance Other liabilities 6 (30 ) Fixed annuities with equity indexed returns Policyholder account balances 407 210 Embedded derivatives within liability host contracts $ 3,889 $ 4,105

Fair Value (Tables)

Fair Value (Tables)	6 Months Ended
	Jun. 30, 2017
Fair Value Disclosures [Abstract]
Recurring Fair Value Measurements	The assets and liabilities measured at estimated fair value on a recurring basis and their corresponding placement in the fair value hierarchy, including those items for which the Company has elected the FVO, are presented below at: June 30, 2017 Fair Value Hierarchy Level 1 Level 2 Level 3 Total (In millions) Assets Fixed maturity securities: U.S. corporate $ — $ 95,628 $ 6,971 $ 102,599 U.S. government and agency 31,342 28,537 — 59,879 Foreign government — 60,900 208 61,108 Foreign corporate — 53,457 7,017 60,474 RMBS 348 33,354 4,830 38,532 State and political subdivision — 16,254 — 16,254 ABS — 13,096 1,039 14,135 CMBS — 10,555 548 11,103 Total fixed maturity securities 31,690 311,781 20,613 364,084 Equity securities 1,640 1,174 601 3,415 FVO securities (1) 12,118 2,332 312 14,762 Short-term investments (2) 3,213 2,471 913 6,597 Mortgage loans: Residential mortgage loans — FVO — — 615 615 Commercial mortgage loans held by CSEs — FVO — 123 — 123 Total mortgage loans — 123 615 738 Other investments 80 101 — 181 Derivative assets: (3) Interest rate 24 7,083 26 7,133 Foreign currency exchange rate — 2,881 73 2,954 Credit — 220 47 267 Equity market 12 1,502 310 1,824 Total derivative assets 36 11,686 456 12,178 Embedded derivatives within asset host contracts (4) — — 388 388 Separate account assets (5) 88,537 230,947 971 320,455 Total assets $ 137,314 $ 560,615 $ 24,869 $ 722,798 Liabilities Derivative liabilities: (3) Interest rate $ 2 $ 1,570 $ 599 $ 2,171 Foreign currency exchange rate 4 2,973 52 3,029 Credit — 46 — 46 Equity market 3 2,095 873 2,971 Total derivative liabilities 9 6,684 1,524 8,217 Embedded derivatives within liability host contracts (4) — — 3,889 3,889 Separate account liabilities (5) — 11 6 17 Total liabilities $ 9 $ 6,695 $ 5,419 $ 12,123 December 31, 2016 Fair Value Hierarchy Level 1 Level 2 Level 3 Total (In millions) Assets Fixed maturity securities: U.S. corporate $ — $ 93,639 $ 7,214 $ 100,853 U.S. government and agency 31,153 26,370 — 57,523 Foreign government — 56,848 290 57,138 Foreign corporate — 50,344 6,713 57,057 RMBS — 31,896 5,097 36,993 State and political subdivision — 16,149 27 16,176 ABS — 12,624 1,253 13,877 CMBS — 10,757 515 11,272 Total fixed maturity securities 31,153 298,627 21,109 350,889 Equity securities 1,373 1,217 604 3,194 FVO securities (1) 11,123 2,513 287 13,923 Short-term investments (2) 4,808 2,436 47 7,291 Mortgage loans: Residential mortgage loans — FVO — — 566 566 Commercial mortgage loans held by CSEs — FVO — 136 — 136 Total mortgage loans — 136 566 702 Other investments 86 71 — 157 Derivative assets: (3) Interest rate 12 9,699 2 9,713 Foreign currency exchange rate — 4,149 80 4,229 Credit — 165 38 203 Equity market 68 1,249 299 1,616 Total derivative assets 80 15,262 419 15,761 Embedded derivatives within asset host contracts (4) — — 380 380 Separate account assets (5) 83,538 223,923 1,159 308,620 Total assets $ 132,161 $ 544,185 $ 24,571 $ 700,917 Liabilities Derivative liabilities: (3) Interest rate $ 12 $ 3,402 $ 1,111 $ 4,525 Foreign currency exchange rate — 3,799 54 3,853 Credit — 49 — 49 Equity market 3 1,604 770 2,377 Total derivative liabilities 15 8,854 1,935 10,804 Embedded derivatives within liability host contracts (4) — — 4,105 4,105 Separate account liabilities (5) — 16 7 23 Total liabilities $ 15 $ 8,870 $ 6,047 $ 14,932 __________________ (1) FVO securities at both June 30, 2017 and December 31, 2016 were comprised of over 90% FVO contractholder-directed unit-linked investments, with the remainder comprised of FVO general account securities and FVO securities held by CSEs. (2) Short-term investments as presented in the tables above differ from the amounts presented on the consolidated balance sheets because certain short-term investments are not measured at estimated fair value on a recurring basis. (3) Derivative assets are presented within other invested assets on the consolidated balance sheets and derivative liabilities are presented within other liabilities on the consolidated balance sheets. The amounts are presented gross in the tables above to reflect the presentation on the consolidated balance sheets, but are presented net for purposes of the rollforward in the Fair Value Measurements Using Significant Unobservable Inputs (Level 3) tables. (4) Embedded derivatives within asset host contracts are presented within premiums, reinsurance and other receivables and other invested assets on the consolidated balance sheets. Embedded derivatives within liability host contracts are presented within policyholder account balances, future policy benefits and other liabilities on the consolidated balance sheets. At June 30, 2017 and December 31, 2016 , debt and equity securities also included embedded derivatives of ($219) million and ($137) million , respectively. (5) Investment performance related to separate account assets is fully offset by corresponding amounts credited to contractholders whose liability is reflected within separate account liabilities. Separate account liabilities are set equal to the estimated fair value of separate account assets. Separate account liabilities presented in the tables above represent derivative liabilities.
Fair Value Inputs, Quantitative Information	The following table presents certain quantitative information about the significant unobservable inputs used in the fair value measurement, and the sensitivity of the estimated fair value to changes in those inputs, for the more significant asset and liability classes measured at fair value on a recurring basis using significant unobservable inputs (Level 3) at: June 30, 2017 December 31, 2016 Impact of Valuation Significant Range Weighted Range Weighted Fixed maturity securities (3) U.S. corporate and foreign corporate • Matrix pricing • Offered quotes (4) 22 - 142 107 18 - 138 105 Increase • Market pricing • Quoted prices (4) 13 - 559 117 6 - 700 114 Increase • Consensus pricing • Offered quotes (4) 89 - 112 102 37 - 120 99 Increase RMBS • Market pricing • Quoted prices (4) 8 - 173 93 19 - 137 91 Increase (5) ABS • Market pricing • Quoted prices (4) 5 - 119 100 5 - 106 99 Increase (5) • Consensus pricing • Offered quotes (4) 99 - 103 100 96 - 102 100 Increase (5) Derivatives Interest rate • Present value techniques • Swap yield (6) 232 - 314 200 - 300 Increase (7) • Repurchase rates (8) — - 13 (44) 18 Decrease (7) Foreign currency exchange rate • Present value techniques • Swap yield (6) (23) - 328 50 - 328 Increase (7) Credit • Present value techniques • Credit spreads (9) 96 - 100 97 - 98 Decrease (7) • Consensus pricing • Offered quotes (10) Equity market • Present value techniques or option pricing models • Volatility (11) 10% - 34% 12% - 32% Increase (7) • Correlation (12) 70% - 70% 40% - 40% Embedded derivatives Direct, assumed and ceded guaranteed minimum benefits • Option pricing techniques • Mortality rates: Ages 0 - 40 0% - 0.21% 0% - 0.21% Decrease (13) Ages 41 - 60 0.01% - 0.78% 0.01% - 0.78% Decrease (13) Ages 61 - 115 0.04% - 100% 0.04% - 100% Decrease (13) • Lapse rates: Durations 1 - 10 0.25% - 100% 0.25% - 100% Decrease (14) Durations 11 - 20 2% - 100% 2% - 100% Decrease (14) Durations 21 - 116 1.25% - 100% 1.25% - 100% Decrease (14) • Utilization rates 0% - 25% 0% - 25% Increase (15) • Withdrawal rates 0% - 20% 0% - 20% (16) • Long-term equity volatilities 8.73% - 33% 9.95% - 33% Increase (17) • Nonperformance risk spread 0.03% - 1.42% 0.04% - 1.70% Decrease (18) __________________ (1) The weighted average for fixed maturity securities is determined based on the estimated fair value of the securities. (2) The impact of a decrease in input would have the opposite impact on estimated fair value. For embedded derivatives, changes to direct and assumed guaranteed minimum benefits are based on liability positions; changes to ceded guaranteed minimum benefits are based on asset positions. (3) Significant increases (decreases) in expected default rates in isolation would result in substantially lower (higher) valuations. (4) Range and weighted average are presented in accordance with the market convention for fixed maturity securities of dollars per hundred dollars of par. (5) Changes in the assumptions used for the probability of default are accompanied by a directionally similar change in the assumption used for the loss severity and a directionally opposite change in the assumptions used for prepayment rates. (6) Ranges represent the rates across different yield curves and are presented in basis points. The swap yield curves are utilized among different types of derivatives to project cash flows, as well as to discount future cash flows to present value. Since this valuation methodology uses a range of inputs across a yield curve to value the derivative, presenting a range is more representative of the unobservable input used in the valuation. (7) Changes in estimated fair value are based on long U.S. dollar net asset positions and will be inversely impacted for short U.S. dollar net asset positions. (8) Ranges represent different repurchase rates utilized as components within the valuation methodology and are presented in basis points. (9) Represents the risk quoted in basis points of a credit default event on the underlying instrument. Credit derivatives with significant unobservable inputs are primarily comprised of written credit default swaps. (10) At both June 30, 2017 and December 31, 2016 , independent non-binding broker quotations were used in the determination of approximately 1% of the total net derivative estimated fair value. (11) Ranges represent the underlying equity volatility quoted in percentage points. Since this valuation methodology uses a range of inputs across multiple volatility surfaces to value the derivative, presenting a range is more representative of the unobservable input used in the valuation. (12) Ranges represent the different correlation factors utilized as components within the valuation methodology. Presenting a range of correlation factors is more representative of the unobservable input used in the valuation. Increases (decreases) in correlation in isolation will increase (decrease) the significance of the change in valuations. (13) Mortality rates vary by age and by demographic characteristics such as gender. Mortality rate assumptions are based on company experience. A mortality improvement assumption is also applied. For any given contract, mortality rates vary throughout the period over which cash flows are projected for purposes of valuing the embedded derivative. (14) Base lapse rates are adjusted at the contract level based on a comparison of the actuarially calculated guaranteed values and the current policyholder account value, as well as other factors, such as the applicability of any surrender charges. A dynamic lapse function reduces the base lapse rate when the guaranteed amount is greater than the account value as in the money contracts are less likely to lapse. Lapse rates are also generally assumed to be lower in periods when a surrender charge applies. For any given contract, lapse rates vary throughout the period over which cash flows are projected for purposes of valuing the embedded derivative. (15) The utilization rate assumption estimates the percentage of contractholders with a GMIB or lifetime withdrawal benefit who will elect to utilize the benefit upon becoming eligible. The rates may vary by the type of guarantee, the amount by which the guaranteed amount is greater than the account value, the contract’s withdrawal history and by the age of the policyholder. For any given contract, utilization rates vary throughout the period over which cash flows are projected for purposes of valuing the embedded derivative. (16) The withdrawal rate represents the percentage of account balance that any given policyholder will elect to withdraw from the contract each year. The withdrawal rate assumption varies by age and duration of the contract, and also by other factors such as benefit type. For any given contract, withdrawal rates vary throughout the period over which cash flows are projected for purposes of valuing the embedded derivative. For GMWBs, any increase (decrease) in withdrawal rates results in an increase (decrease) in the estimated fair value of the guarantees. For GMABs and GMIBs, any increase (decrease) in withdrawal rates results in a decrease (increase) in the estimated fair value. (17) Long-term equity volatilities represent equity volatility beyond the period for which observable equity volatilities are available. For any given contract, long-term equity volatility rates vary throughout the period over which cash flows are projected for purposes of valuing the embedded derivative. (18) Nonperformance risk spread varies by duration and by currency. For any given contract, multiple nonperformance risk spreads will apply, depending on the duration of the cash flow being discounted for purposes of valuing the embedded derivative.
Fair Value Inputs, Quantitative Information	The following table presents certain quantitative information about the significant unobservable inputs used in the fair value measurement, and the sensitivity of the estimated fair value to changes in those inputs, for the more significant asset and liability classes measured at fair value on a recurring basis using significant unobservable inputs (Level 3) at: June 30, 2017 December 31, 2016 Impact of Valuation Significant Range Weighted Range Weighted Fixed maturity securities (3) U.S. corporate and foreign corporate • Matrix pricing • Offered quotes (4) 22 - 142 107 18 - 138 105 Increase • Market pricing • Quoted prices (4) 13 - 559 117 6 - 700 114 Increase • Consensus pricing • Offered quotes (4) 89 - 112 102 37 - 120 99 Increase RMBS • Market pricing • Quoted prices (4) 8 - 173 93 19 - 137 91 Increase (5) ABS • Market pricing • Quoted prices (4) 5 - 119 100 5 - 106 99 Increase (5) • Consensus pricing • Offered quotes (4) 99 - 103 100 96 - 102 100 Increase (5) Derivatives Interest rate • Present value techniques • Swap yield (6) 232 - 314 200 - 300 Increase (7) • Repurchase rates (8) — - 13 (44) 18 Decrease (7) Foreign currency exchange rate • Present value techniques • Swap yield (6) (23) - 328 50 - 328 Increase (7) Credit • Present value techniques • Credit spreads (9) 96 - 100 97 - 98 Decrease (7) • Consensus pricing • Offered quotes (10) Equity market • Present value techniques or option pricing models • Volatility (11) 10% - 34% 12% - 32% Increase (7) • Correlation (12) 70% - 70% 40% - 40% Embedded derivatives Direct, assumed and ceded guaranteed minimum benefits • Option pricing techniques • Mortality rates: Ages 0 - 40 0% - 0.21% 0% - 0.21% Decrease (13) Ages 41 - 60 0.01% - 0.78% 0.01% - 0.78% Decrease (13) Ages 61 - 115 0.04% - 100% 0.04% - 100% Decrease (13) • Lapse rates: Durations 1 - 10 0.25% - 100% 0.25% - 100% Decrease (14) Durations 11 - 20 2% - 100% 2% - 100% Decrease (14) Durations 21 - 116 1.25% - 100% 1.25% - 100% Decrease (14) • Utilization rates 0% - 25% 0% - 25% Increase (15) • Withdrawal rates 0% - 20% 0% - 20% (16) • Long-term equity volatilities 8.73% - 33% 9.95% - 33% Increase (17) • Nonperformance risk spread 0.03% - 1.42% 0.04% - 1.70% Decrease (18) __________________ (1) The weighted average for fixed maturity securities is determined based on the estimated fair value of the securities. (2) The impact of a decrease in input would have the opposite impact on estimated fair value. For embedded derivatives, changes to direct and assumed guaranteed minimum benefits are based on liability positions; changes to ceded guaranteed minimum benefits are based on asset positions. (3) Significant increases (decreases) in expected default rates in isolation would result in substantially lower (higher) valuations. (4) Range and weighted average are presented in accordance with the market convention for fixed maturity securities of dollars per hundred dollars of par. (5) Changes in the assumptions used for the probability of default are accompanied by a directionally similar change in the assumption used for the loss severity and a directionally opposite change in the assumptions used for prepayment rates. (6) Ranges represent the rates across different yield curves and are presented in basis points. The swap yield curves are utilized among different types of derivatives to project cash flows, as well as to discount future cash flows to present value. Since this valuation methodology uses a range of inputs across a yield curve to value the derivative, presenting a range is more representative of the unobservable input used in the valuation. (7) Changes in estimated fair value are based on long U.S. dollar net asset positions and will be inversely impacted for short U.S. dollar net asset positions. (8) Ranges represent different repurchase rates utilized as components within the valuation methodology and are presented in basis points. (9) Represents the risk quoted in basis points of a credit default event on the underlying instrument. Credit derivatives with significant unobservable inputs are primarily comprised of written credit default swaps. (10) At both June 30, 2017 and December 31, 2016 , independent non-binding broker quotations were used in the determination of approximately 1% of the total net derivative estimated fair value. (11) Ranges represent the underlying equity volatility quoted in percentage points. Since this valuation methodology uses a range of inputs across multiple volatility surfaces to value the derivative, presenting a range is more representative of the unobservable input used in the valuation. (12) Ranges represent the different correlation factors utilized as components within the valuation methodology. Presenting a range of correlation factors is more representative of the unobservable input used in the valuation. Increases (decreases) in correlation in isolation will increase (decrease) the significance of the change in valuations. (13) Mortality rates vary by age and by demographic characteristics such as gender. Mortality rate assumptions are based on company experience. A mortality improvement assumption is also applied. For any given contract, mortality rates vary throughout the period over which cash flows are projected for purposes of valuing the embedded derivative. (14) Base lapse rates are adjusted at the contract level based on a comparison of the actuarially calculated guaranteed values and the current policyholder account value, as well as other factors, such as the applicability of any surrender charges. A dynamic lapse function reduces the base lapse rate when the guaranteed amount is greater than the account value as in the money contracts are less likely to lapse. Lapse rates are also generally assumed to be lower in periods when a surrender charge applies. For any given contract, lapse rates vary throughout the period over which cash flows are projected for purposes of valuing the embedded derivative. (15) The utilization rate assumption estimates the percentage of contractholders with a GMIB or lifetime withdrawal benefit who will elect to utilize the benefit upon becoming eligible. The rates may vary by the type of guarantee, the amount by which the guaranteed amount is greater than the account value, the contract’s withdrawal history and by the age of the policyholder. For any given contract, utilization rates vary throughout the period over which cash flows are projected for purposes of valuing the embedded derivative. (16) The withdrawal rate represents the percentage of account balance that any given policyholder will elect to withdraw from the contract each year. The withdrawal rate assumption varies by age and duration of the contract, and also by other factors such as benefit type. For any given contract, withdrawal rates vary throughout the period over which cash flows are projected for purposes of valuing the embedded derivative. For GMWBs, any increase (decrease) in withdrawal rates results in an increase (decrease) in the estimated fair value of the guarantees. For GMABs and GMIBs, any increase (decrease) in withdrawal rates results in a decrease (increase) in the estimated fair value. (17) Long-term equity volatilities represent equity volatility beyond the period for which observable equity volatilities are available. For any given contract, long-term equity volatility rates vary throughout the period over which cash flows are projected for purposes of valuing the embedded derivative. (18) Nonperformance risk spread varies by duration and by currency. For any given contract, multiple nonperformance risk spreads will apply, depending on the duration of the cash flow being discounted for purposes of valuing the embedded derivative.
Fair Value, Measured on Recurring Basis, Unobservable Input Reconciliation	The following tables summarize the change of all assets and (liabilities) measured at estimated fair value on a recurring basis using significant unobservable inputs (Level 3): Fair Value Measurements Using Significant Unobservable Inputs (Level 3) Fixed Maturity Securities Corporate (1) U.S. Government and Agency Foreign Structured Securities State and Equity Securities FVO Securities (2) (In millions) Three Months Ended June 30, 2017 Balance, beginning of period $ 13,371 $ — $ 289 $ 7,293 $ 7 $ 622 $ 335 Total realized/unrealized gains (losses) included in net income (loss) (3) (4) 10 — 1 41 — (4 ) 9 Total realized/unrealized gains (losses) included in AOCI 239 — (1 ) 55 — 14 — Purchases (5) 1,694 — 5 567 — 5 150 Sales (5) (1,334 ) — (5 ) (726 ) — (36 ) (109 ) Issuances (5) — — — — — — — Settlements (5) — — — — — — — Transfers into Level 3 (6) 257 — — 65 — — 3 Transfers out of Level 3 (6) (249 ) — (81 ) (878 ) (7 ) — (76 ) Balance, end of period $ 13,988 $ — $ 208 $ 6,417 $ — $ 601 $ 312 Three Months Ended June 30, 2016 Balance, beginning of period $ 12,792 $ 211 $ 712 $ 6,652 $ 36 $ 669 $ 249 Total realized/unrealized gains (losses) included in net income (loss) (3) (4) (5 ) — 4 30 — — (3 ) Total realized/unrealized gains (losses) included in AOCI 339 7 2 5 — 11 — Purchases (5) 852 105 65 940 17 19 11 Sales (5) (306 ) — (19 ) (478 ) — (17 ) (19 ) Issuances (5) — — — — — — — Settlements (5) — — — — — — — Transfers into Level 3 (6) 490 — 103 12 — 2 6 Transfers out of Level 3 (6) (452 ) — (491 ) (461 ) — (2 ) (13 ) Balance, end of period $ 13,710 $ 323 $ 376 $ 6,700 $ 53 $ 682 $ 231 Changes in unrealized gains (losses) included in net income (loss) for the instruments still held at June 30, 2017: (7) $ 7 $ — $ 1 $ 39 $ — $ (4 ) $ 9 Changes in unrealized gains (losses) included in net income (loss) for the instruments still held at June 30, 2016: (7) $ (5 ) $ — $ 4 $ 35 $ — $ — $ (3 ) Fair Value Measurements Using Significant Unobservable Inputs (Level 3) Short-term Investments Residential Mortgage Net Derivatives (8) Net Embedded Derivatives (9) Separate (In millions) Three Months Ended June 30, 2017 Balance, beginning of period $ 780 $ 639 $ (1,287 ) $ (3,411 ) $ 1,199 Total realized/unrealized gains (losses) included in net income (loss) (3) (4) 1 6 110 116 2 Total realized/unrealized gains (losses) included in AOCI (1 ) — 96 13 — Purchases (5) 190 42 4 — 134 Sales (5) (1 ) (47 ) — — (86 ) Issuances (5) — — — — — Settlements (5) — (25 ) 9 (219 ) (16 ) Transfers into Level 3 (6) — — — — 16 Transfers out of Level 3 (6) (56 ) — — — (284 ) Balance, end of period $ 913 $ 615 $ (1,068 ) $ (3,501 ) $ 965 Three Months Ended June 30, 2016 Balance, beginning of period $ 170 $ 392 $ (338 ) $ (1,939 ) $ 1,466 Total realized/unrealized gains (losses) included in net income (loss) (3) (4) — 1 165 (4,505 ) 33 Total realized/unrealized gains (losses) included in AOCI 5 — 41 (135 ) — Purchases (5) 115 71 4 — 209 Sales (5) (6 ) (4 ) — — (49 ) Issuances (5) — — (1 ) — (2 ) Settlements (5) — (11 ) 2 (225 ) 5 Transfers into Level 3 (6) 2 — — — 2 Transfers out of Level 3 (6) (111 ) — (5 ) — (37 ) Balance, end of period $ 175 $ 449 $ (132 ) $ (6,804 ) $ 1,627 Changes in unrealized gains (losses) included in net income (loss) for the instruments still held at June 30, 2017: (7) $ 1 $ 6 $ 94 $ 95 $ — Changes in unrealized gains (losses) included in net income (loss) for the instruments still held at June 30, 2016: (7) $ — $ 1 $ 163 $ (4,520 ) $ — Fair Value Measurements Using Significant Unobservable Inputs (Level 3) Fixed Maturity Securities Corporate (1) U.S. Government and Agency Foreign Structured Securities State and Equity Securities FVO Securities (2) (In millions) Six Months Ended June 30, 2017 Balance, beginning of period $ 13,927 $ — $ 290 $ 6,865 $ 27 $ 604 $ 287 Total realized/unrealized gains (losses) included in net income (loss) (3), (4) 2 — 2 75 — (14 ) 16 Total realized/unrealized gains (losses) included in AOCI 588 — 5 117 — 38 — Purchases (5) 2,612 — 12 803 — 9 207 Sales (5) (1,656 ) — (87 ) (1,140 ) — (36 ) (109 ) Issuances (5) — — — — — — — Settlements (5) — — — — — — — Transfers into Level 3 (6) 138 — 4 78 — — 8 Transfers out of Level 3 (6) (1,623 ) — (18 ) (381 ) (27 ) — (97 ) Balance, end of period $ 13,988 $ — $ 208 $ 6,417 $ — $ 601 $ 312 Six Months Ended June 30, 2016 Balance, beginning of period $ 12,796 $ — $ 856 $ 7,116 $ 46 $ 432 $ 270 Total realized/unrealized gains (losses) included in net income (loss) (3), (4) (44 ) — 8 60 — (24 ) 5 Total realized/unrealized gains (losses) included in AOCI 929 18 (3 ) (9 ) — 41 — Purchases (5) 1,316 105 79 1,546 17 23 26 Sales (5) (602 ) — (23 ) (903 ) — (62 ) (26 ) Issuances (5) — — — — — — — Settlements (5) — — — — — — — Transfers into Level 3 (6) 639 200 41 30 — 457 23 Transfers out of Level 3 (6) (1,324 ) — (582 ) (1,140 ) (10 ) (185 ) (67 ) Balance, end of period $ 13,710 $ 323 $ 376 $ 6,700 $ 53 $ 682 $ 231 Changes in unrealized gains (losses) included in net income (loss) for the instruments still held at June 30, 2017 (7) $ 3 $ — $ 2 $ 67 $ — $ (10 ) $ 14 Changes in unrealized gains (losses) included in net income (loss) for the instruments still held at June 30, 2016 (7) $ (44 ) $ — $ 7 $ 63 $ — $ (26 ) $ 5 Fair Value Measurements Using Significant Unobservable Inputs (Level 3) Short-term Investments Residential Mortgage Net Derivatives (8) Net Embedded Derivatives (9) Separate (In millions) Six Months Ended June 30, 2017 Balance, beginning of period $ 47 $ 566 $ (1,516 ) $ (3,725 ) $ 1,152 Total realized/unrealized gains (losses) included in net income (loss) (3), (4) 1 3 126 704 (16 ) Total realized/unrealized gains (losses) included in AOCI (1 ) — 135 (47 ) — Purchases (5) 913 174 4 — 171 Sales (5) (17 ) (79 ) — — (58 ) Issuances (5) — — (7 ) — 1 Settlements (5) — (49 ) 190 (433 ) (50 ) Transfers into Level 3 (6) — — — — 14 Transfers out of Level 3 (6) (30 ) — — — (249 ) Balance, end of period $ 913 $ 615 $ (1,068 ) $ (3,501 ) $ 965 Six Months Ended June 30, 2016 Balance, beginning of period $ 291 $ 314 $ (411 ) $ (544 ) $ 1,704 Total realized/unrealized gains (losses) included in net income (loss) (3), (4) — 11 228 (5,616 ) 62 Total realized/unrealized gains (losses) included in AOCI 8 — 51 (210 ) — Purchases (5) 126 149 12 — 226 Sales (5) (247 ) (8 ) — — (234 ) Issuances (5) — — (1 ) — 2 Settlements (5) — (17 ) (9 ) (434 ) (4 ) Transfers into Level 3 (6) — — — — 4 Transfers out of Level 3 (6) (3 ) — (2 ) — (133 ) Balance, end of period $ 175 $ 449 $ (132 ) $ (6,804 ) $ 1,627 Changes in unrealized gains (losses) included in net income (loss) for the instruments still held at June 30, 2017 (7) $ 1 $ 3 $ 102 $ 693 $ — Changes in unrealized gains (losses) included in net income (loss) for the instruments still held at June 30, 2016 (7) $ — $ 11 $ 207 $ (5,634 ) $ — __________________ (1) Comprised of U.S. and foreign corporate securities. (2) Comprised of FVO contractholder-directed unit-linked investments, FVO general account securities and FVO general account securities held by CSEs. (3) Amortization of premium/accretion of discount is included within net investment income. Impairments charged to net income (loss) on securities are included in net investment gains (losses), while changes in estimated fair value of residential mortgage loans — FVO are included in net investment income. Lapses associated with net embedded derivatives are included in net derivative gains (losses). Substantially all realized/unrealized gains (losses) included in net income (loss) for net derivatives and net embedded derivatives are reported in net derivatives gains (losses). (4) Interest and dividend accruals, as well as cash interest coupons and dividends received, are excluded from the rollforward. (5) Items purchased/issued and then sold/settled in the same period are excluded from the rollforward. Fees attributed to embedded derivatives are included in settlements. (6) Gains and losses, in net income (loss) and OCI, are calculated assuming transfers into and/or out of Level 3 occurred at the beginning of the period. Items transferred into and then out of Level 3 in the same period are excluded from the rollforward. (7) Changes in unrealized gains (losses) included in net income (loss) relate to assets and liabilities still held at the end of the respective periods. Substantially all changes in unrealized gains (losses) included in net income (loss) for net derivatives and net embedded derivatives are reported in net derivative gains (losses). (8) Freestanding derivative assets and liabilities are presented net for purposes of the rollforward. (9) Embedded derivative assets and liabilities are presented net for purposes of the rollforward. (10) Investment performance related to separate account assets is fully offset by corresponding amounts credited to contractholders within separate account liabilities. Therefore, such changes in estimated fair value are not recorded in net income (loss). For the purpose of this disclosure, these changes are presented within net investment gains (losses). Separate account assets and liabilities are presented net for the purposes of the rollforward.
Fair Value Option	T he following table presents information for assets accounted for under the FVO. Residential Mortgage CSEs — FVO (1) June 30, 2017 December 31, 2016 June 30, 2017 December 31, 2016 (In millions) Assets Unpaid principal balance $ 872 $ 794 $ 76 $ 88 Difference between estimated fair value and unpaid principal balance (257 ) (228 ) 47 48 Carrying value at estimated fair value $ 615 $ 566 $ 123 $ 136 Loans in nonaccrual status $ 230 $ 214 $ — $ — Loans more than 90 days past due $ 128 $ 137 $ — $ — Loans in nonaccrual status or more than 90 days past due, or both — difference between aggregate estimated fair value and unpaid principal balance $ (158 ) $ (150 ) $ — $ — __________________ (1) These assets are comprised of commercial mortgage loans. Changes in estimated fair value on these assets and gains or losses on sales of these assets are recognized in net investment gains (losses). Interest income on commercial mortgage loans held by CSEs — FVO is recognized in net investment income.
Nonrecurring Fair Value Measurements	The following table presents information for assets measured at estimated fair value on a nonrecurring basis during the periods and still held at the reporting dates (for example, when there is evidence of impairment). The estimated fair values for these assets were determined using significant unobservable inputs (Level 3). At June 30, Three Months Six Months 2017 2016 2017 2016 2017 2016 Carrying Value After Measurement Gains (Losses) (In millions) Mortgage loans (1) $ 12 $ 26 $ — $ (85 ) $ — $ (143 ) Other limited partnership interests (2) $ 61 $ 62 $ (12 ) $ (16 ) $ (24 ) $ (36 ) Other assets (3) $ — $ — $ (2 ) $ (30 ) $ (5 ) $ (44 ) __________________ (1) Estimated fair values for impaired mortgage loans are based on independent broker quotations or valuation models using unobservable inputs or, if the loans are in foreclosure or are otherwise determined to be collateral dependent, are based on the estimated fair value of the underlying collateral or the present value of the expected future cash flows. (2) For these cost method investments, estimated fair value is determined from information provided on the financial statements of the underlying entities including NAV data. These investments include private equity and debt funds that typically invest primarily in various strategies including domestic and international leveraged buyout funds; power, energy, timber and infrastructure development funds; venture capital funds; and below investment grade debt and mezzanine debt funds. Distributions will be generated from investment gains, from operating income from the underlying investments of the funds and from liquidation of the underlying assets of the funds. The Company estimates that the underlying assets of the funds will be liquidated over the next two to 10 years . Unfunded commitments for these investments at both June 30, 2017 and 2016 were not significant. (3) During the three months and six months ended June 30, 2016, the Company recognized an impairment of computer software in connection with the sale to Massachusetts Mutual Life Insurance Company (“MassMutual”). See Note 3 of the Notes to the Consolidated Financial Statements included in the 2016 Annual Report.
Fair Value of Financial Instruments Carried at Other Than Fair Value	The carrying values and estimated fair values for such financial instruments, and their corresponding placement in the fair value hierarchy, are summarized as follows at: June 30, 2017 Fair Value Hierarchy Carrying Level 1 Level 2 Level 3 Total (In millions) Assets Mortgage loans $ 76,834 $ — $ — $ 78,792 $ 78,792 Policy loans $ 11,072 $ — $ 1,111 $ 12,031 $ 13,142 Real estate joint ventures $ 9 $ — $ — $ 43 $ 43 Other limited partnership interests $ 323 $ — $ — $ 314 $ 314 Other invested assets $ 538 $ 149 $ — $ 388 $ 537 Premiums, reinsurance and other receivables $ 4,614 $ — $ 1,517 $ 3,208 $ 4,725 Other assets $ 325 $ — $ 245 $ 115 $ 360 Liabilities Policyholder account balances $ 127,341 $ — $ — $ 131,171 $ 131,171 Long-term debt $ 19,473 $ — $ 21,396 $ — $ 21,396 Collateral financing arrangements $ 1,235 $ — $ — $ 957 $ 957 Junior subordinated debt securities $ 3,169 $ — $ 4,329 $ — $ 4,329 Other liabilities $ 3,158 $ — $ 2,623 $ 536 $ 3,159 Separate account liabilities $ 125,154 $ — $ 125,154 $ — $ 125,154 December 31, 2016 Fair Value Hierarchy Carrying Level 1 Level 2 Level 3 Total (In millions) Assets Mortgage loans $ 73,843 $ — $ — $ 75,129 $ 75,129 Policy loans $ 11,028 $ — $ 1,115 $ 11,900 $ 13,015 Real estate joint ventures $ 17 $ — $ — $ 69 $ 69 Other limited partnership interests $ 384 $ — $ — $ 413 $ 413 Other invested assets $ 506 $ 145 $ — $ 360 $ 505 Premiums, reinsurance and other receivables $ 5,140 $ — $ 1,982 $ 3,179 $ 5,161 Other assets $ 237 $ — $ 198 $ 71 $ 269 Liabilities Policyholder account balances $ 124,475 $ — $ — $ 127,833 $ 127,833 Long-term debt $ 16,459 $ — $ 18,016 $ — $ 18,016 Collateral financing arrangements $ 4,071 $ — $ — $ 3,775 $ 3,775 Junior subordinated debt securities $ 3,169 $ — $ 3,982 $ — $ 3,982 Other liabilities $ 2,028 $ — $ 1,540 $ 488 $ 2,028 Separate account liabilities $ 119,498 $ — $ 119,498 $ — $ 119,498

Equity (Tables)

Equity (Tables)	6 Months Ended
	Jun. 30, 2017
Equity [Abstract]
Schedule of Stock by Class	Preferred stock authorized, issued and outstanding was as follows at both June 30, 2017 and December 31, 2016 : Series Shares Authorized Shares Issued Shares Outstanding Floating Rate Non-Cumulative Preferred Stock, Series A 27,600,000 24,000,000 24,000,000 5.25% Fixed-to-Floating Rate Non-Cumulative Preferred Stock, Series C 1,500,000 1,500,000 1,500,000 Series A Junior Participating Preferred Stock 10,000,000 — — Not designated 160,900,000 — — Total 200,000,000 25,500,000 25,500,000
Components of Accumulated Other Comprehensive Income (Loss)	Information regarding changes in the balances of each component of AOCI attributable to MetLife, Inc., was as follows: Three Months Unrealized Investment Gains (Losses), Net of Related Offsets (1) Unrealized Gains (Losses) on Derivatives Foreign Currency Translation Adjustments Defined Benefit Plans Adjustment Total (In millions) Balance, beginning of period $ 11,336 $ 1,853 $ (4,842 ) $ (1,951 ) $ 6,396 OCI before reclassifications 3,290 (7 ) 169 1 3,453 Deferred income tax benefit (expense) (1,132 ) 3 (6 ) 3 (1,132 ) AOCI before reclassifications, net of income tax 13,494 1,849 (4,679 ) (1,947 ) 8,717 Amounts reclassified from AOCI (47 ) (429 ) — 41 (435 ) Deferred income tax benefit (expense) 22 149 — (17 ) 154 Amounts reclassified from AOCI, net of income tax (25 ) (280 ) — 24 (281 ) Balance, end of period $ 13,469 $ 1,569 $ (4,679 ) $ (1,923 ) $ 8,436 Three Months Unrealized Investment Gains (Losses), Net of Related Offsets (1) Unrealized Gains (Losses) on Derivatives Foreign Currency Translation Adjustments Defined Benefit Plans Adjustment Total (In millions) Balance, beginning of period $ 15,446 $ 1,725 $ (4,282 ) $ (2,024 ) $ 10,865 OCI before reclassifications 4,268 800 209 11 5,288 Deferred income tax benefit (expense) (1,388 ) (269 ) 53 (4 ) (1,608 ) AOCI before reclassifications, net of income tax 18,326 2,256 (4,020 ) (2,017 ) 14,545 Amounts reclassified from AOCI (183 ) 243 — 51 111 Deferred income tax benefit (expense) 61 (68 ) — (17 ) (24 ) Amounts reclassified from AOCI, net of income tax (122 ) 175 — 34 87 Balance, end of period $ 18,204 $ 2,431 $ (4,020 ) $ (1,983 ) $ 14,632 Six Months Unrealized Investment Gains (Losses), Net of Related Offsets (1) Unrealized Gains (Losses) on Derivatives Foreign Currency Translation Adjustments Defined Benefit Plans Adjustment Total (In millions) Balance, beginning of period $ 10,766 $ 1,865 $ (5,312 ) $ (1,972 ) $ 5,347 OCI before reclassifications 4,023 203 517 (19 ) 4,724 Deferred income tax benefit (expense) (1,416 ) (70 ) 116 5 (1,365 ) AOCI before reclassifications, net of income tax 13,373 1,998 (4,679 ) (1,986 ) 8,706 Amounts reclassified from AOCI 149 (658 ) — 85 (424 ) Deferred income tax benefit (expense) (53 ) 229 — (22 ) 154 Amounts reclassified from AOCI, net of income tax 96 (429 ) — 63 (270 ) Balance, end of period $ 13,469 $ 1,569 $ (4,679 ) $ (1,923 ) $ 8,436 Six Months Unrealized Investment Gains (Losses), Net of Related Offsets (1) Unrealized Gains (Losses) on Derivatives Foreign Currency Translation Adjustments Defined Benefit Plans Adjustment Total (In millions) Balance, beginning of period $ 10,315 $ 1,458 $ (4,950 ) $ (2,052 ) $ 4,771 OCI before reclassifications 11,938 1,496 760 11 14,205 Deferred income tax benefit (expense) (3,937 ) (468 ) 170 (4 ) (4,239 ) AOCI before reclassifications, net of income tax 18,316 2,486 (4,020 ) (2,045 ) 14,737 Amounts reclassified from AOCI (166 ) (80 ) — 99 (147 ) Deferred income tax benefit (expense) 54 25 — (37 ) 42 Amounts reclassified from AOCI, net of income tax (112 ) (55 ) — 62 (105 ) Balance, end of period $ 18,204 $ 2,431 $ (4,020 ) $ (1,983 ) $ 14,632 __________________ (1) See Note 6 for information on offsets to investments related to future policy benefits, DAC, VOBA and DSI, and the policyholder dividend obligation.
Reclassification out of Accumulated Other Comprehensive Income (Loss)	Information regarding amounts reclassified out of each component of AOCI was as follows: AOCI Components Amounts Reclassified from AOCI Consolidated Statements of Operations and Comprehensive Income (Loss) Locations Three Months Six Months 2017 2016 2017 2016 (In millions) Net unrealized investment gains (losses): Net unrealized investment gains (losses) $ 46 $ 158 $ 38 $ 125 Net investment gains (losses) Net unrealized investment gains (losses) (4 ) 16 3 19 Net investment income Net unrealized investment gains (losses) 5 9 (190 ) 22 Net derivative gains (losses) Net unrealized investment gains (losses), before income tax 47 183 (149 ) 166 Income tax (expense) benefit (22 ) (61 ) 53 (54 ) Net unrealized investment gains (losses), net of income tax 25 122 (96 ) 112 Unrealized gains (losses) on derivatives - cash flow hedges: Interest rate swaps 6 18 14 28 Net derivative gains (losses) Interest rate swaps 4 4 9 7 Net investment income Interest rate forwards 2 (1 ) (2 ) 1 Net derivative gains (losses) Interest rate forwards 2 2 3 3 Net investment income Interest rate forwards 1 1 1 1 Other expenses Foreign currency swaps 414 (269 ) 632 37 Net derivative gains (losses) Foreign currency swaps (1 ) (1 ) (1 ) (1 ) Net investment income Foreign currency swaps — — 1 1 Other expenses Credit forwards 1 3 1 3 Net derivative gains (losses) Gains (losses) on cash flow hedges, before income tax 429 (243 ) 658 80 Income tax (expense) benefit (149 ) 68 (229 ) (25 ) Gains (losses) on cash flow hedges, net of income tax 280 (175 ) 429 55 Defined benefit plans adjustment: (1) Amortization of net actuarial gains (losses) (48 ) (52 ) (97 ) (103 ) Amortization of prior service (costs) credit 7 1 12 4 Amortization of defined benefit plan items, before income tax (41 ) (51 ) (85 ) (99 ) Income tax (expense) benefit 17 17 22 37 Amortization of defined benefit plan items, net of income tax (24 ) (34 ) (63 ) (62 ) Total reclassifications, net of income tax $ 281 $ (87 ) $ 270 $ 105 __________________ (1) These AOCI components are included in the computation of net periodic benefit costs. See Note 12 .

Other Expenses (Tables)

Other Expenses (Tables)	6 Months Ended
	Jun. 30, 2017
Other Income and Expenses [Abstract]
Other Expenses	Information on other expenses was as follows: Three Months Six Months 2017 2016 2017 2016 (In millions) Compensation $ 1,134 $ 1,189 $ 2,323 $ 2,499 Pension, postretirement and postemployment benefit costs 78 103 158 243 Commissions 1,025 1,094 2,035 2,228 Volume-related costs 203 214 401 480 Capitalization of DAC (821 ) (915 ) (1,617 ) (1,896 ) Amortization of DAC and VOBA 704 121 1,237 1,116 Amortization of negative VOBA (38 ) (67 ) (81 ) (166 ) Interest expense on debt 295 306 591 618 Premium taxes, licenses and fees 167 189 355 404 Professional services 431 398 818 728 Rent and related expenses, net of sublease income 71 98 152 195 Other 810 516 1,251 989 Total other expenses $ 4,059 $ 3,246 $ 7,623 $ 7,438 Separation-related expenses, primarily related to fees for the terminations of financing arrangements and professional services, were $330 million and $407 million for the three months and six months ended June 30, 2017 , respectively. Separation-related expenses, primarily related to fees for professional services, were $55 million and $58 million for the three months and six months ended June 30, 2016 , respectively. See Note 3 for further information on Separation-related expenses.
Restructuring and Related Costs [Table Text Block]	The Company commenced in 2016 a unit cost improvement program related to the Company’s refreshed enterprise strategy. This global strategy focuses on transforming the Company to become more digital, driving efficiencies and innovation to achieve competitive advantage, and simplified, decreasing the costs and risks associated with the Company’s highly complex industry to customers and shareholders. Restructuring charges related to this program are included in other expenses. As the expenses relate to an enterprise-wide initiative, they are reported in Corporate & Other. Such restructuring charges were as follows: Three Months Six Months Severance (In millions) Balance, beginning of period $ 38 $ 35 Restructuring charges 11 22 Cash payments (32 ) (40 ) Balance, end of period $ 17 $ 17 Total restructuring charges incurred since inception of initiative $ 57 $ 57

Employee Benefit Plans (Tables)

Employee Benefit Plans (Tables)	6 Months Ended
	Jun. 30, 2017
Retirement Benefits [Abstract]
Net periodic benefit costs	The components of net periodic benefit costs were as follows: Three Months 2017 2016 Pension Benefits Other Postretirement Benefits Pension Benefits Other Postretirement Benefits (In millions) Service costs $ 61 $ 2 $ 73 $ 2 Interest costs 109 20 109 21 Curtailment costs (1) — — — (3 ) Expected return on plan assets (130 ) (18 ) (127 ) (19 ) Amortization of net actuarial (gains) losses 48 — 50 2 Amortization of prior service costs (credit) (1 ) (6 ) — (1 ) Net periodic benefit costs (credit) $ 87 $ (2 ) $ 105 $ 2 Six Months 2017 2016 Pension Benefits Other Postretirement Benefits Pension Benefits Other Postretirement Benefits (In millions) Service costs $ 122 $ 3 $ 145 $ 4 Interest costs 217 39 220 42 Curtailment costs (1) — — — 27 Expected return on plan assets (262 ) (36 ) (254 ) (37 ) Amortization of net actuarial (gains) losses 97 — 99 4 Amortization of prior service costs (credit) (1 ) (11 ) — (4 ) Net periodic benefit costs (credit) $ 173 $ (5 ) $ 210 $ 36 __________________ (1) During the three months and six months ended June 30, 2016, the Company recognized curtailment charges on certain postretirement benefit plans in connection with the sale to MassMutual. See Note 3 of the Notes to the Consolidated Financial Statements included in the 2016 Annual Report.

Earnings Per Common Share (Tabl

Earnings Per Common Share (Tables)	6 Months Ended
	Jun. 30, 2017
Earnings Per Share [Abstract]
Earnings Per Common Share	The following table presents the weighted average shares, basic earnings per common share and diluted earnings per common share: Three Months Six Months 2017 2016 2017 2016 (In millions, except per share data) Weighted Average Shares: Weighted average common stock outstanding for basic earnings per common share 1,074.0 1,100.3 1,082.1 1,100.6 Incremental common shares from assumed exercise or issuance of stock-based awards 8.1 8.8 8.3 8.3 Weighted average common stock outstanding for diluted earnings per common share 1,082.1 1,109.1 1,090.4 1,108.9 Net Income (Loss): Net income (loss) $ 887 $ 114 $ 1,716 $ 2,317 Less: Net income (loss) attributable to noncontrolling interests 3 4 6 6 Less: Preferred stock dividends 46 46 52 52 Net income (loss) available to MetLife, Inc.’s common shareholders $ 838 $ 64 $ 1,658 $ 2,259 Basic $ 0.78 $ 0.06 $ 1.53 $ 2.05 Diluted $ 0.77 $ 0.06 $ 1.52 $ 2.04

Business, Basis of Presentati33

Business, Basis of Presentation and Summary of Significant Accounting Policies (Narrative) (Details) $ in Millions	6 Months Ended
	Jun. 30, 2017USD ($)Segment	Mar. 31, 2017USD ($)	Dec. 31, 2016USD ($)
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Number of segments | Segment	6
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Premiums and Other Receivables, Net	$ 26,487		$ 26,081
Payables For Collateral Under Securities Loaned And Other Transactions	33,725		33,264
Derivative assets	12,178		15,761
Derivative liabilities	8,217		10,804
Accrued Investment Income Receivable	3,970		3,988
Other Liabilities	$ 27,060		$ 28,818
CME update impact [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Premiums and Other Receivables, Net		$ 991
Payables For Collateral Under Securities Loaned And Other Transactions		816
Derivative assets		1,800
Derivative liabilities		2,000
Accrued Investment Income Receivable		101
Other Liabilities		$ 14

Segment Information (Earnings)

Segment Information (Earnings) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Revenues
Premiums	$ 9,935	$ 9,417	$ 19,250	$ 19,110
Universal life and investment-type product policy fees	2,302	2,286	4,604	4,630
Net investment income	4,959	4,887	10,155	9,446
Other revenues	382	487	756	974
Net investment gains (losses)	104	266	112	281
Net derivative gains (losses)	(437)	(2,099)	(1,363)	(764)
Total revenues	17,245	15,244	33,514	33,677
Expenses
Policyholder benefits and claims and policyholder dividends	10,622	10,598	20,798	20,591
Interest credited to policyholder account balances	1,562	1,500	3,274	2,826
Capitalization of DAC	(821)	(915)	(1,617)	(1,896)
Amortization of DAC and VOBA	704	121	1,237	1,116
Amortization of negative VOBA	(38)	(67)	(81)	(166)
Interest expense on debt	295	306	591	618
Other expenses	3,919	3,801	7,493	7,766
Total expenses	16,243	15,344	31,695	30,855
Provision for income tax expense (benefit)	115	(214)	103	505
Net income (loss)	887	114	1,716	2,317
Operating Segments
Revenues
Premiums	9,935	9,417	19,250	18,684
Universal life and investment-type product policy fees	2,191	2,173	4,392	4,324
Net investment income	4,884	4,881	9,879	9,587
Other revenues	377	484	745	971
Net investment gains (losses)	0	0	0	0
Net derivative gains (losses)	0	0	0	0
Total revenues	17,387	16,955	34,266	33,566
Expenses
Policyholder benefits and claims and policyholder dividends	10,350	10,385	20,178	19,978
Interest credited to policyholder account balances	1,349	1,314	2,659	2,615
Capitalization of DAC	(821)	(915)	(1,617)	(1,791)
Amortization of DAC and VOBA	844	1,015	1,689	1,896
Amortization of negative VOBA	(35)	(61)	(75)	(128)
Interest expense on debt	294	303	590	615
Other expenses	3,576	3,659	7,044	7,369
Total expenses	15,557	15,700	30,468	30,554
Provision for income tax expense (benefit)	377	285	793	707
Operating earnings	1,453	970	3,005	2,305
Operating Segments | U.S.
Revenues
Premiums	5,877	5,171	11,062	10,191
Universal life and investment-type product policy fees	251	248	516	498
Net investment income	1,575	1,565	3,187	3,025
Other revenues	199	193	403	397
Net investment gains (losses)	0	0	0	0
Net derivative gains (losses)	0	0	0	0
Total revenues	7,902	7,177	15,168	14,111
Expenses
Policyholder benefits and claims and policyholder dividends	5,878	5,270	11,113	10,316
Interest credited to policyholder account balances	359	323	710	645
Capitalization of DAC	(116)	(121)	(216)	(232)
Amortization of DAC and VOBA	114	118	228	236
Amortization of negative VOBA	0	0	0	0
Interest expense on debt	4	3	6	5
Other expenses	914	918	1,823	1,860
Total expenses	7,153	6,511	13,664	12,830
Provision for income tax expense (benefit)	250	223	502	432
Operating earnings	499	443	1,002	849
Operating Segments | Asia
Revenues
Premiums	1,659	1,681	3,367	3,339
Universal life and investment-type product policy fees	375	370	741	720
Net investment income	729	678	1,431	1,296
Other revenues	11	16	21	33
Net investment gains (losses)	0	0	0	0
Net derivative gains (losses)	0	0	0	0
Total revenues	2,774	2,745	5,560	5,388
Expenses
Policyholder benefits and claims and policyholder dividends	1,247	1,324	2,562	2,560
Interest credited to policyholder account balances	333	324	654	643
Capitalization of DAC	(428)	(426)	(848)	(811)
Amortization of DAC and VOBA	290	304	581	590
Amortization of negative VOBA	(30)	(57)	(67)	(121)
Interest expense on debt	0	0	0	0
Other expenses	895	877	1,770	1,728
Total expenses	2,307	2,346	4,652	4,589
Provision for income tax expense (benefit)	157	140	303	235
Operating earnings	310	259	605	564
Operating Segments | Latin America
Revenues
Premiums	645	631	1,292	1,232
Universal life and investment-type product policy fees	275	269	535	537
Net investment income	289	243	592	498
Other revenues	8	8	17	15
Net investment gains (losses)	0	0	0	0
Net derivative gains (losses)	0	0	0	0
Total revenues	1,217	1,151	2,436	2,282
Expenses
Policyholder benefits and claims and policyholder dividends	596	583	1,229	1,133
Interest credited to policyholder account balances	94	84	176	164
Capitalization of DAC	(88)	(80)	(170)	(153)
Amortization of DAC and VOBA	68	66	146	129
Amortization of negative VOBA	0	0	0	0
Interest expense on debt	2	0	3	0
Other expenses	357	323	683	633
Total expenses	1,029	976	2,067	1,906
Provision for income tax expense (benefit)	34	38	72	88
Operating earnings	154	137	297	288
Operating Segments | EMEA
Revenues
Premiums	505	519	1,007	1,019
Universal life and investment-type product policy fees	92	95	187	190
Net investment income	78	83	152	163
Other revenues	28	19	45	39
Net investment gains (losses)	0	0	0	0
Net derivative gains (losses)	0	0	0	0
Total revenues	703	716	1,391	1,411
Expenses
Policyholder benefits and claims and policyholder dividends	270	283	539	544
Interest credited to policyholder account balances	25	30	49	59
Capitalization of DAC	(100)	(106)	(192)	(207)
Amortization of DAC and VOBA	95	103	182	205
Amortization of negative VOBA	(5)	(4)	(8)	(7)
Interest expense on debt	0	0	0	0
Other expenses	332	336	648	669
Total expenses	617	642	1,218	1,263
Provision for income tax expense (benefit)	14	10	26	21
Operating earnings	72	64	147	127
Operating Segments | MetLife Holdings
Revenues
Premiums	1,022	1,122	2,081	2,219
Universal life and investment-type product policy fees	345	361	707	716
Net investment income	1,401	1,477	2,842	2,952
Other revenues	37	203	133	407
Net investment gains (losses)	0	0	0	0
Net derivative gains (losses)	0	0	0	0
Total revenues	2,805	3,163	5,763	6,294
Expenses
Policyholder benefits and claims and policyholder dividends	1,720	1,927	3,456	3,750
Interest credited to policyholder account balances	255	261	512	519
Capitalization of DAC	(23)	(96)	(57)	(196)
Amortization of DAC and VOBA	139	269	213	417
Amortization of negative VOBA	0	0	0	0
Interest expense on debt	5	14	20	28
Other expenses	370	864	710	1,460
Total expenses	2,466	3,239	4,854	5,978
Provision for income tax expense (benefit)	104	(43)	289	82
Operating earnings	235	(33)	620	234
Operating Segments | Brighthouse Financial
Revenues
Premiums	217	280	394	673
Universal life and investment-type product policy fees	885	861	1,769	1,719
Net investment income	791	870	1,649	1,683
Other revenues	162	346	236	432
Net investment gains (losses)	0	0	0	0
Net derivative gains (losses)	0	0	0	0
Total revenues	2,055	2,357	4,048	4,507
Expenses
Policyholder benefits and claims and policyholder dividends	654	1,008	1,285	1,711
Interest credited to policyholder account balances	283	291	558	580
Capitalization of DAC	(63)	(83)	(130)	(185)
Amortization of DAC and VOBA	136	152	336	314
Amortization of negative VOBA	0	0	0	0
Interest expense on debt	26	32	58	64
Other expenses	647	555	1,259	1,179
Total expenses	1,683	1,955	3,366	3,663
Provision for income tax expense (benefit)	89	105	155	220
Operating earnings	283	297	527	624
Operating Segments | Corporate & Other
Revenues
Premiums	10	13	47	11
Universal life and investment-type product policy fees	(32)	(31)	(63)	(56)
Net investment income	21	(35)	26	(30)
Other revenues	(68)	(301)	(110)	(352)
Net investment gains (losses)	0	0	0	0
Net derivative gains (losses)	0	0	0	0
Total revenues	(69)	(354)	(100)	(427)
Expenses
Policyholder benefits and claims and policyholder dividends	(15)	(10)	(6)	(36)
Interest credited to policyholder account balances	0	1	0	5
Capitalization of DAC	(3)	(3)	(4)	(7)
Amortization of DAC and VOBA	2	3	3	5
Amortization of negative VOBA	0	0	0	0
Interest expense on debt	257	254	503	518
Other expenses	61	(214)	151	(160)
Total expenses	302	31	647	325
Provision for income tax expense (benefit)	(271)	(188)	(554)	(371)
Operating earnings	(100)	(197)	(193)	(381)
Significant Reconciling Items
Revenues
Premiums	0	0	0	426
Universal life and investment-type product policy fees	111	113	212	306
Net investment income	75	6	276	(141)
Other revenues	5	3	11	3
Net investment gains (losses)	104	266	112	281
Net derivative gains (losses)	(437)	(2,099)	(1,363)	(764)
Total revenues	(142)	(1,711)	(752)	111
Expenses
Policyholder benefits and claims and policyholder dividends	272	213	620	613
Interest credited to policyholder account balances	213	186	615	211
Capitalization of DAC	0	0	0	(105)
Amortization of DAC and VOBA	(140)	(894)	(452)	(780)
Amortization of negative VOBA	(3)	(6)	(6)	(38)
Interest expense on debt	1	3	1	3
Other expenses	343	142	449	397
Total expenses	686	(356)	1,227	301
Provision for income tax expense (benefit)	$ (262)	$ (499)	$ (690)	$ (202)

Segment Information (Total Asse

Segment Information (Total Assets) (Details) - USD ($) $ in Millions	Jun. 30, 2017	Dec. 31, 2016
Segment Reporting Information [Line Items]
Total assets	$ 925,199	$ 898,764
U.S.
Segment Reporting Information [Line Items]
Total assets	257,676	253,683
Asia
Segment Reporting Information [Line Items]
Total assets	130,363	120,656
Latin America
Segment Reporting Information [Line Items]
Total assets	72,458	67,233
EMEA
Segment Reporting Information [Line Items]
Total assets	28,219	25,596
MetLife Holdings
Segment Reporting Information [Line Items]
Total assets	184,817	184,276
Brighthouse Financial
Segment Reporting Information [Line Items]
Total assets	224,933	222,681
Corporate & Other
Segment Reporting Information [Line Items]
Total assets	$ 26,733	$ 24,639

Segment Information (Narrative)

Segment Information (Narrative) (Details)	6 Months Ended
	Jun. 30, 2017Segment
Segment Reporting [Abstract]
Number of segments	6

Separation (Contributions of En

Separation (Contributions of Entities, Mergers and Dividends - Narrative) (Details) - USD ($) $ in Billions	Aug. 03, 2017	Jun. 30, 2017	Dec. 31, 2016
Debt Instrument [Line Items]
Common Stock, Shares, Issued		1,166,331,934	1,164,029,985
Common Stock, Shares Authorized		3,000,000,000	3,000,000,000
Minimum | Spinoff [Member]
Debt Instrument [Line Items]
BHF Common Stock		80.10%
Subsequent Event [Member] | Spinoff [Member]
Debt Instrument [Line Items]
Common Stock, Shares, Issued	96,776,670
Common Stock, Shares Authorized	119,773,106
BHF Common Stock	80.80%
Cash Dividends Paid to Parent Company by Consolidated Subsidiaries	$ 1.8

Separation (Termination of Fina

Separation (Termination of Financing Arrangements - Narrative) (Details) - USD ($) $ in Millions	1 Months Ended	3 Months Ended		6 Months Ended
	Apr. 30, 2017	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016	Feb. 10, 2017	Dec. 31, 2016
Debt Instrument [Line Items]
Secured Debt		$ 1,235		$ 1,235			$ 4,071
Other General and Administrative Expense		810	$ 516	1,251	$ 989
Junior Subordinated Debt Instrument Two [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount						$ 750
Spinoff [Member]
Debt Instrument [Line Items]
Payments of Distributions to Affiliates	$ 590
Line of Credit Facility, Maximum Borrowing Capacity	3,000	536		536
Spinoff [Member] | Secured Debt [Member] | MetLife Reinsurance Company Of South Carolina [Member]
Debt Instrument [Line Items]
Secured Debt	2,800
Invested Assets On Deposit Held In Trust And Pledged As Collateral	2,800
Other General and Administrative Expense	37
Spinoff [Member] | Junior Subordinated Debt Instrument Two [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount		$ 750		$ 750
Committed Credit Facility Seven [Member] | Spinoff [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	4,300
Committed Credit Facility Five [Member] | Spinoff [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	3,500
Committed Credit Facility [Member] | Spinoff [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Commitment Fee Amount	$ 257

Separation (New Financing Arran

Separation (New Financing Arrangements - Narrative) (Details) - USD ($) $ in Millions	1 Months Ended		3 Months Ended		6 Months Ended
	Jul. 31, 2017	Jun. 30, 2017	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2017	Aug. 02, 2017	Jul. 21, 2017	Apr. 30, 2017	Dec. 31, 2016
Debt Instrument [Line Items]
Secured Debt		$ 1,235	$ 1,235		$ 1,235						$ 4,071
Preferred Stock, Shares Issued		25,500,000	25,500,000		25,500,000						25,500,000
Other General and Administrative Expense			$ 810	$ 516	$ 1,251	$ 989
Spinoff [Member]
Debt Instrument [Line Items]
Preferred Stock, Shares Issued		50,000	50,000		50,000
Preferred Stock, Dividend Payment Rate, Variable		0.065
Proceeds from Issuance of Preferred Stock and Preference Stock		$ 49
Debt Issuance Costs, Gross		25	$ 25		$ 25
Line of Credit Facility, Maximum Borrowing Capacity		536	536		536					$ 3,000
Spinoff [Member] | 2027 Senior Notes [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount		$ 1,500	$ 1,500		$ 1,500
Debt Instrument, Maturity Date		Jun. 30, 2027
Debt Instrument, Interest Rate, Stated Percentage		3.70%	3.70%		3.70%
Spinoff [Member] | 2047 Senior Notes [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount		$ 1,500	$ 1,500		$ 1,500
Debt Instrument, Maturity Date		Jun. 30, 2047
Debt Instrument, Interest Rate, Stated Percentage		4.70%	4.70%		4.70%
Brighthouse Reinsurance Company of Delaware [Member] | Spinoff [Member]
Debt Instrument [Line Items]
Secured Debt										8,100
Line of Credit Facility, Maximum Borrowing Capacity										$ 10,000
Subsequent Event [Member] | Spinoff [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount								$ 500
Line of Credit Facility, Maximum Borrowing Capacity									$ 600
Other General and Administrative Expense	$ 7
Line of Credit Facility, Current Borrowing Capacity									$ 500
Redemption Price							101.00%

Insurance (Guarantees Related t

Insurance (Guarantees Related to Annuity Contracts) (Details) - USD ($) $ in Millions	6 Months Ended	12 Months Ended
	Jun. 30, 2017	Dec. 31, 2016
Variable Annuity Guarantees: | Guaranteed Death Benefits
Net Amount at Risk by Product and Guarantee [Line Items]
Total account value	$ 181,810	$ 177,895
Separate account value	154,498	150,118
Net amount at risk	$ 7,382	$ 8,679
Average attained age of contractholders	67 years	66 years
Variable Annuity Guarantees: | Guaranteed Annuitization Benefits
Net Amount at Risk by Product and Guarantee [Line Items]
Total account value	$ 91,863	$ 89,839
Separate account value	88,450	86,355
Net amount at risk	$ 3,896	$ 3,834
Average attained age of contractholders	67 years	66 years
Other Annuity Guarantees: | Guaranteed Annuitization Benefits
Net Amount at Risk by Product and Guarantee [Line Items]
Total account value	$ 1,397	$ 1,393
Net amount at risk	$ 491	$ 490
Average attained age of contractholders	51 years	50 years

Insurance (Guarantees Related41

Insurance (Guarantees Related to Universal and Variable Life Contracts) (Details) - Universal and Variable Life Contracts - USD ($) $ in Millions	6 Months Ended	12 Months Ended
	Jun. 30, 2017	Dec. 31, 2016
Secondary Guarantees
Net Amount at Risk by Product and Guarantee [Line Items]
Total account value (3)	$ 18,147	$ 17,689
Net amount at risk (7)	$ 170,470	$ 172,860
Average attained age of policyholders	58 years	58 years
Paid-Up Guarantees
Net Amount at Risk by Product and Guarantee [Line Items]
Total account value (3)	$ 3,270	$ 3,337
Net amount at risk (7)	$ 17,186	$ 17,785
Average attained age of policyholders	63 years	62 years

Insurance (Rollforward of Unpai

Insurance (Rollforward of Unpaid Claims) (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Liability for Claims and Claims Adjustment Expense [Line Items]
Balance at beginning of period	$ 18,159	$ 11,388
Less: Reinsurance recoverables	3,058	2,042
Net Balance, beginning of period	15,101	14,334
Incurred related to:
Current period	13,126	12,985
Prior years	14	28
Total incurred	13,140	13,013
Paid related to:
Current period	(8,850)	(8,351)
Prior periods	(3,811)	(3,772)
Total paid	(12,661)	(12,123)
Net Balance, end of period	15,580	15,224
Add: Reinsurance recoverables	3,182	2,873
Balance at end of period (included in future policy benefits and other policy-related balances)	18,762	18,097
Scenario, Previously Reported
Liability for Claims and Claims Adjustment Expense [Line Items]
Net Balance, beginning of period	15,101	9,346
Cumulative adjustment
Liability for Claims and Claims Adjustment Expense [Line Items]
Net Balance, beginning of period	$ 0	$ 4,988

Closed Block (Liabilities and A

Closed Block (Liabilities and Assets) (Details) - USD ($) $ in Millions	Jun. 30, 2017	Dec. 31, 2016	Dec. 31, 2015
Closed Block Liabilities
Future policy benefits	$ 40,567	$ 40,834
Other policy-related balances	187	257
Policyholder dividends payable	476	443
Policyholder dividend obligation	2,237	1,931	$ 1,783
Current income tax payable	0	4
Other liabilities	240	196
Total closed block liabilities	43,707	43,665
Assets Designated to the Closed Block
Fixed maturity securities available-for-sale, at estimated fair value	27,474	27,220
Equity securities available-for-sale, at estimated fair value	292	100
Mortgage loans	5,919	5,935
Policy loans	4,541	4,553
Real estate and real estate joint ventures	634	655
Other invested assets	809	1,246
Total investments	39,669	39,709
Cash and cash equivalents	99	18
Accrued investment income	466	467
Premiums, reinsurance and other receivables	138	68
Deferred income tax assets	158	177
Total assets designated to the closed block	40,530	40,439
Excess of closed block liabilities over assets designated to the closed block	3,177	3,226
Amounts included in accumulated other comprehensive income (loss) (“AOCI”):
Unrealized investment gains (losses), net of income tax	1,814	1,517
Unrealized gains (losses) on derivatives, net of income tax	57	95
Allocated to policyholder dividend obligation, net of income tax	(1,454)	(1,255)
Total amounts included in AOCI	417	357
Maximum future earnings to be recognized from closed block assets and liabilities	$ 3,594	$ 3,583

Closed Block (Policyholder Divi

Closed Block (Policyholder Dividend Obligation) (Details) - USD ($) $ in Millions	6 Months Ended	12 Months Ended
	Jun. 30, 2017	Dec. 31, 2016
Closed block policyholder dividend obligation
Balance, beginning of period	$ 1,931	$ 1,783
Change in unrealized investment and derivative gains (losses)	306	148
Balance, end of period	$ 2,237	$ 1,931

Closed Block (Revenues and Expe

Closed Block (Revenues and Expenses) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Revenues
Premiums	$ 432	$ 444	$ 834	$ 861
Net investment income	452	469	918	949
Net investment gains (losses)	(2)	12	(10)	(16)
Net derivative gains (losses)	(10)	4	(18)	(7)
Total revenues	872	929	1,724	1,787
Expenses
Policyholder benefits and claims	614	632	1,182	1,242
Policyholder dividends	247	246	497	491
Other expenses	32	35	64	67
Total expenses	893	913	1,743	1,800
Revenues, net of expenses before provision for income tax expense (benefit)	(21)	16	(19)	(13)
Provision for income tax expense (benefit)	(8)	6	(8)	(5)
Revenues, net of expenses and provision for income tax expense (benefit)	$ (13)	$ 10	$ (11)	$ (8)

Investments (Fixed Maturity and

Investments (Fixed Maturity and Equity Securities Available-For-Sale by Sector) (Details) - USD ($) $ in Millions	Jun. 30, 2017	Dec. 31, 2016
Available-for-sale Securities [Abstract]
Cost or Amortized Cost	$ 338,030	$ 330,354
Cost or Amortized Cost	2,983	2,744
Gross Unrealized OTTI Loss	37	8
Available-for-sale Securities, Debt Securities	364,084	350,889
Equity securities	3,415	3,194
Fixed Maturity Securities
Available-for-sale Securities [Abstract]
Gross Unrealized Gain	28,876	25,420
Gross Unrealized Temporary Loss	2,859	4,893
Gross Unrealized OTTI Loss	(37)	(8)
U.S. corporate
Available-for-sale Securities [Abstract]
Cost or Amortized Cost	94,759	94,558
Gross Unrealized Gain	8,426	7,351
Gross Unrealized Temporary Loss	586	1,056
Gross Unrealized OTTI Loss	0	0
Available-for-sale Securities, Debt Securities	102,599	100,853
U.S. government and agency
Available-for-sale Securities [Abstract]
Cost or Amortized Cost	54,356	53,326
Gross Unrealized Gain	5,922	4,977
Gross Unrealized Temporary Loss	399	780
Gross Unrealized OTTI Loss	0	0
Available-for-sale Securities, Debt Securities	59,879	57,523
Foreign government
Available-for-sale Securities [Abstract]
Cost or Amortized Cost	54,708	50,923
Gross Unrealized Gain	6,712	6,600
Gross Unrealized Temporary Loss	312	385
Gross Unrealized OTTI Loss	0	0
Available-for-sale Securities, Debt Securities	61,108	57,138
Foreign corporate
Available-for-sale Securities [Abstract]
Cost or Amortized Cost	57,709	55,676
Gross Unrealized Gain	3,819	3,132
Gross Unrealized Temporary Loss	1,054	1,752
Gross Unrealized OTTI Loss	0	(1)
Available-for-sale Securities, Debt Securities	60,474	57,057
RMBS
Available-for-sale Securities [Abstract]
Cost or Amortized Cost	37,355	36,293
Gross Unrealized Gain	1,472	1,244
Gross Unrealized Temporary Loss	334	554
Gross Unrealized OTTI Loss	(39)	(10)
Available-for-sale Securities, Debt Securities	38,532	36,993
State and political subdivision
Available-for-sale Securities [Abstract]
Cost or Amortized Cost	14,234	14,566
Gross Unrealized Gain	2,060	1,733
Gross Unrealized Temporary Loss	40	122
Gross Unrealized OTTI Loss	0	1
Available-for-sale Securities, Debt Securities	16,254	16,176
ABS
Available-for-sale Securities [Abstract]
Cost or Amortized Cost	14,088	13,920
Gross Unrealized Gain	124	101
Gross Unrealized Temporary Loss	74	141
Gross Unrealized OTTI Loss	3	3
Available-for-sale Securities, Debt Securities	14,135	13,877
CMBS
Available-for-sale Securities [Abstract]
Cost or Amortized Cost	10,821	11,092
Gross Unrealized Gain	341	282
Gross Unrealized Temporary Loss	60	103
Gross Unrealized OTTI Loss	(1)	(1)
Available-for-sale Securities, Debt Securities	11,103	11,272
Equity securities
Available-for-sale Securities [Abstract]
Gross Unrealized Gain	463	513
Gross Unrealized Temporary Loss	31	63
Gross Unrealized OTTI Loss	0	0
Common Stock
Available-for-sale Securities [Abstract]
Cost or Amortized Cost	2,280	1,927
Gross Unrealized Gain	411	488
Gross Unrealized Temporary Loss	16	14
Gross Unrealized OTTI Loss	0	0
Equity securities	2,675	2,401
Non-redeemable preferred stock
Available-for-sale Securities [Abstract]
Cost or Amortized Cost	703	817
Gross Unrealized Gain	52	25
Gross Unrealized Temporary Loss	15	49
Gross Unrealized OTTI Loss	0	0
Equity securities	$ 740	$ 793

Investments (Maturities of Fixe

Investments (Maturities of Fixed Maturity Securities) (Details) - USD ($) $ in Millions	Jun. 30, 2017	Dec. 31, 2016
Available-for-sale Securities, Debt Maturities [Abstract]
Amortized Cost, Due in one year or less	$ 14,582
Amortized Cost, Due after one year through five years	71,452
Amortized Cost, Due after five years through ten years	70,413
Amortized Cost, Due after ten years	119,319
Amortized Cost, Structured Securities	62,264
Amortized Cost, Subtotal	338,030	$ 330,354
Estimated Fair Value, Due in one year or less	14,713
Estimated Fair Value, Due after one year through five years	74,867
Estimated Fair Value, Due after five years through ten years	74,093
Estimated Fair Value, Due after ten years	136,641
Estimated Fair Value, Structured Securities	63,770
Available-for-sale Securities, Debt Securities	$ 364,084	$ 350,889

Investments (Continuous Gross U

Investments (Continuous Gross Unrealized Losses for Fixed Maturity and Equity Securities Available-For-Sale) (Details) $ in Millions	Jun. 30, 2017USD ($)	Dec. 31, 2016USD ($)
Continuous Gross Unrealized Loss and OTTI Loss for Fixed Maturity and Equity Securities Available-for-Sale
Total number of securities in an unrealized loss position less than 12 months	3,981	5,321
Total number of securities in an unrealized loss position equal to or greater than 12 months	1,544	1,790
Fixed Maturity Securities
Continuous Gross Unrealized Loss and OTTI Loss for Fixed Maturity and Equity Securities Available-for-Sale
Less than 12 months Estimated Fair Value	$ 60,818	$ 68,339
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	1,428	2,924
Equal to or Greater than 12 Months Estimated Fair Value	15,194	17,103
Equal to or Greater than 12 Months Gross Unrealized Loss	1,394	1,961
U.S. corporate
Continuous Gross Unrealized Loss and OTTI Loss for Fixed Maturity and Equity Securities Available-for-Sale
Less than 12 months Estimated Fair Value	10,077	16,147
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	310	656
Equal to or Greater than 12 Months Estimated Fair Value	3,305	3,684
Equal to or Greater than 12 Months Gross Unrealized Loss	276	400
U.S. government and agency
Continuous Gross Unrealized Loss and OTTI Loss for Fixed Maturity and Equity Securities Available-for-Sale
Less than 12 months Estimated Fair Value	20,004	13,500
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	378	760
Equal to or Greater than 12 Months Estimated Fair Value	189	141
Equal to or Greater than 12 Months Gross Unrealized Loss	21	20
Foreign government
Continuous Gross Unrealized Loss and OTTI Loss for Fixed Maturity and Equity Securities Available-for-Sale
Less than 12 months Estimated Fair Value	6,448	6,228
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	227	271
Equal to or Greater than 12 Months Estimated Fair Value	1,012	924
Equal to or Greater than 12 Months Gross Unrealized Loss	85	114
Foreign corporate
Continuous Gross Unrealized Loss and OTTI Loss for Fixed Maturity and Equity Securities Available-for-Sale
Less than 12 months Estimated Fair Value	7,081	11,613
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	234	639
Equal to or Greater than 12 Months Estimated Fair Value	6,741	6,127
Equal to or Greater than 12 Months Gross Unrealized Loss	820	1,112
RMBS
Continuous Gross Unrealized Loss and OTTI Loss for Fixed Maturity and Equity Securities Available-for-Sale
Less than 12 months Estimated Fair Value	12,033	12,943
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	215	403
Equal to or Greater than 12 Months Estimated Fair Value	1,753	2,618
Equal to or Greater than 12 Months Gross Unrealized Loss	80	141
State and political subdivision
Continuous Gross Unrealized Loss and OTTI Loss for Fixed Maturity and Equity Securities Available-for-Sale
Less than 12 months Estimated Fair Value	1,062	2,636
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	32	114
Equal to or Greater than 12 Months Estimated Fair Value	97	85
Equal to or Greater than 12 Months Gross Unrealized Loss	8	9
ABS
Continuous Gross Unrealized Loss and OTTI Loss for Fixed Maturity and Equity Securities Available-for-Sale
Less than 12 months Estimated Fair Value	2,711	2,702
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	10	33
Equal to or Greater than 12 Months Estimated Fair Value	1,496	2,789
Equal to or Greater than 12 Months Gross Unrealized Loss	67	111
CMBS
Continuous Gross Unrealized Loss and OTTI Loss for Fixed Maturity and Equity Securities Available-for-Sale
Less than 12 months Estimated Fair Value	1,402	2,570
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	22	48
Equal to or Greater than 12 Months Estimated Fair Value	601	735
Equal to or Greater than 12 Months Gross Unrealized Loss	37	54
Equity securities
Continuous Gross Unrealized Loss and OTTI Loss for Fixed Maturity and Equity Securities Available-for-Sale
Less than 12 months Estimated Fair Value	359	301
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	16	23
Equal to or Greater than 12 Months Estimated Fair Value	136	176
Equal to or Greater than 12 Months Gross Unrealized Loss	15	40
Common Stock
Continuous Gross Unrealized Loss and OTTI Loss for Fixed Maturity and Equity Securities Available-for-Sale
Less than 12 months Estimated Fair Value	331	105
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	16	14
Equal to or Greater than 12 Months Estimated Fair Value	2	11
Equal to or Greater than 12 Months Gross Unrealized Loss	0	0
Non-redeemable preferred stock
Continuous Gross Unrealized Loss and OTTI Loss for Fixed Maturity and Equity Securities Available-for-Sale
Less than 12 months Estimated Fair Value	28	196
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	0	9
Equal to or Greater than 12 Months Estimated Fair Value	134	165
Equal to or Greater than 12 Months Gross Unrealized Loss	$ 15	$ 40

Investments (Mortgage Loans by

Investments (Mortgage Loans by Portfolio Segment) (Details) - USD ($) $ in Millions	Jun. 30, 2017	Dec. 31, 2016	Jun. 30, 2016	Dec. 31, 2015
Company-held mortgage loans held-for-investment, net
Commercial mortgage loans	$ 49,549	$ 48,035
Percentage of loans receivable on commercial mortgage loans	63.90%	64.40%
Agricultural mortgage loans	$ 14,877	$ 14,456
Percentage of loans receivable on agricultural mortgage loans	19.20%	19.40%
Residential mortgage loans	$ 12,764	$ 11,696
Percentage of loans receivable on residential mortgage loans	16.40%	15.70%
Subtotal	$ 77,190	$ 74,187
Percentage of loans receivable on subtotal	99.50%	99.50%
Valuation allowances	$ (356)	$ (344)	$ (467)	$ (318)
Percentage of loans receivable on valuation allowances	(0.50%)	(0.50%)
Subtotal mortgage loans, net	$ 76,834	$ 73,843
Percentage of loans receivable on subtotal mortgage loans held-for-investment, net	99.00%	99.00%
Percentage of residential mortgage loans - FVO	0.80%	0.80%
Percentage of loans receivable on commercial mortgage loans held by consolidated securitization entities - fair value option	0.20%	0.20%
Total mortgage loans, net	$ 77,572	$ 74,545
Percentage of loans held for sale on total mortgage loans, net	100.00%	100.00%
Residential — FVO
Company-held mortgage loans held-for-investment, net
Total mortgage loans, net	$ 615	$ 566
Consolidated Securitization Entities
Company-held mortgage loans held-for-investment, net
Total mortgage loans, net	$ 123	$ 136

Investments (Mortgage Loans and

Investments (Mortgage Loans and Valuation Allowance by Portfolio Segment) (Details) - USD ($) $ in Millions	Jun. 30, 2017	Dec. 31, 2016
Mortgage Loans on Real Estate [Line Items]
Unpaid Principal Balance	$ 15	$ 15
Recorded Investment	13	13
Valuation Allowances	1	1
Unpaid Principal Balance	328	305
Recorded Investment	298	281
Recorded Investment	76,879	73,893
Valuation Allowances	355	343
Carrying Value	310	293
Commercial
Mortgage Loans on Real Estate [Line Items]
Unpaid Principal Balance	0	0
Recorded Investment	0	0
Valuation Allowances	0	0
Unpaid Principal Balance	0	12
Recorded Investment	0	12
Recorded Investment	49,549	48,023
Valuation Allowances	242	234
Carrying Value	0	12
Agricultural
Mortgage Loans on Real Estate [Line Items]
Unpaid Principal Balance	15	15
Recorded Investment	13	13
Valuation Allowances	1	1
Unpaid Principal Balance	4	27
Recorded Investment	4	27
Recorded Investment	14,860	14,416
Valuation Allowances	45	43
Carrying Value	16	39
Residential
Mortgage Loans on Real Estate [Line Items]
Unpaid Principal Balance	0	0
Recorded Investment	0	0
Valuation Allowances	0	0
Unpaid Principal Balance	324	266
Recorded Investment	294	242
Recorded Investment	12,470	11,454
Valuation Allowances	68	66
Carrying Value	$ 294	$ 242

Investments (Valuation Allowanc

Investments (Valuation Allowance Rollforward by Portfolio Segment) (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Mortgage Loans on Real Estate [Line Items]
Balance, beginning of period	$ 344	$ 318
Provision (release)	20	158
Charge-offs, net of recoveries	(8)	(9)
Balance, end of period	356	467
Commercial
Mortgage Loans on Real Estate [Line Items]
Balance, beginning of period	234	217
Provision (release)	8	150
Charge-offs, net of recoveries	0	0
Balance, end of period	242	367
Agricultural
Mortgage Loans on Real Estate [Line Items]
Balance, beginning of period	44	42
Provision (release)	2	1
Charge-offs, net of recoveries	0	(2)
Balance, end of period	46	41
Residential
Mortgage Loans on Real Estate [Line Items]
Balance, beginning of period	66	59
Provision (release)	10	7
Charge-offs, net of recoveries	(8)	(7)
Balance, end of period	$ 68	$ 59

Investments (Credit Quality of

Investments (Credit Quality of Commercial Mortgage Loans) (Details) - USD ($) $ in Millions	Jun. 30, 2017	Dec. 31, 2016
Mortgage Loans on Real Estate [Line Items]
Commercial mortgage loans	$ 49,549	$ 48,035
% of Total	100.00%	100.00%
Estimated Fair Value	$ 50,573	$ 48,412
% of Total	100.00%	100.00%
Less than 65%
Mortgage Loans on Real Estate [Line Items]
Commercial mortgage loans	$ 44,988	$ 43,992
% of Total	90.80%	91.60%
Estimated Fair Value	$ 46,034	$ 44,459
% of Total	91.00%	91.80%
65% to 75%
Mortgage Loans on Real Estate [Line Items]
Commercial mortgage loans	$ 4,118	$ 3,556
% of Total	8.30%	7.40%
Estimated Fair Value	$ 4,113	$ 3,488
% of Total	8.20%	7.20%
76% to 80%
Mortgage Loans on Real Estate [Line Items]
Commercial mortgage loans	$ 272	$ 229
% of Total	0.60%	0.50%
Estimated Fair Value	$ 260	$ 215
% of Total	0.50%	0.50%
Greater than 80%
Mortgage Loans on Real Estate [Line Items]
Commercial mortgage loans	$ 171	$ 258
% of Total	0.30%	0.50%
Estimated Fair Value	$ 166	$ 250
% of Total	0.30%	0.50%
Greater than 1.20x
Mortgage Loans on Real Estate [Line Items]
Commercial mortgage loans	$ 46,774	$ 45,517
Greater than 1.20x | Less than 65%
Mortgage Loans on Real Estate [Line Items]
Commercial mortgage loans	43,059	41,811
Greater than 1.20x | 65% to 75%
Mortgage Loans on Real Estate [Line Items]
Commercial mortgage loans	3,658	3,335
Greater than 1.20x | 76% to 80%
Mortgage Loans on Real Estate [Line Items]
Commercial mortgage loans	57	229
Greater than 1.20x | Greater than 80%
Mortgage Loans on Real Estate [Line Items]
Commercial mortgage loans	0	142
1.00x - 1.20x
Mortgage Loans on Real Estate [Line Items]
Commercial mortgage loans	2,091	1,348
1.00x - 1.20x | Less than 65%
Mortgage Loans on Real Estate [Line Items]
Commercial mortgage loans	1,693	1,307
1.00x - 1.20x | 65% to 75%
Mortgage Loans on Real Estate [Line Items]
Commercial mortgage loans	250	0
1.00x - 1.20x | 76% to 80%
Mortgage Loans on Real Estate [Line Items]
Commercial mortgage loans	148	0
1.00x - 1.20x | Greater than 80%
Mortgage Loans on Real Estate [Line Items]
Commercial mortgage loans	0	41
Less than 1.00x
Mortgage Loans on Real Estate [Line Items]
Commercial mortgage loans	684	1,170
Less than 1.00x | Less than 65%
Mortgage Loans on Real Estate [Line Items]
Commercial mortgage loans	236	874
Less than 1.00x | 65% to 75%
Mortgage Loans on Real Estate [Line Items]
Commercial mortgage loans	210	221
Less than 1.00x | 76% to 80%
Mortgage Loans on Real Estate [Line Items]
Commercial mortgage loans	67	0
Less than 1.00x | Greater than 80%
Mortgage Loans on Real Estate [Line Items]
Commercial mortgage loans	$ 171	$ 75

Investments (Credit Quality o53

Investments (Credit Quality of Agricultural and Residential Mortgage Loans) (Details) - USD ($) $ in Millions	Jun. 30, 2017	Dec. 31, 2016
Agricultural Mortgage Loans - by Credit Quality Indicator:
Recorded Investment	$ 14,877	$ 14,456
% of Total	100.00%	100.00%
Residential Mortgage Loans - by Credit Quality Indicator:
Recorded Investment	$ 12,764	$ 11,696
% of Total	100.00%	100.00%
Less than 65%
Agricultural Mortgage Loans - by Credit Quality Indicator:
Recorded Investment	$ 14,131	$ 13,872
% of Total	95.00%	96.00%
65% to 75%
Agricultural Mortgage Loans - by Credit Quality Indicator:
Recorded Investment	$ 606	$ 479
% of Total	4.10%	3.30%
76% to 80%
Agricultural Mortgage Loans - by Credit Quality Indicator:
Recorded Investment	$ 127	$ 17
% of Total	0.80%	0.10%
Greater than 80%
Agricultural Mortgage Loans - by Credit Quality Indicator:
Recorded Investment	$ 13	$ 88
% of Total	0.10%	0.60%
Performing
Residential Mortgage Loans - by Credit Quality Indicator:
Recorded Investment	$ 12,332	$ 11,304
% of Total	96.60%	96.60%
Nonperforming
Residential Mortgage Loans - by Credit Quality Indicator:
Recorded Investment	$ 432	$ 392
% of Total	3.40%	3.40%

Investments (Past Due and Inter

Investments (Past Due and Interest Accrual Status of Mortgage Loans) (Details) - USD ($) $ in Millions	Jun. 30, 2017	Dec. 31, 2016
Financing Receivable, Recorded Investment, Aging [Abstract]
Past Due	$ 550	$ 522
Loans and Leases Receivable, Nonperforming, Accrual of Interest	136	144
Nonaccrual Status	417	378
Commercial
Financing Receivable, Recorded Investment, Aging [Abstract]
Past Due	0	3
Loans and Leases Receivable, Nonperforming, Accrual of Interest	0	3
Nonaccrual Status	0	0
Agricultural
Financing Receivable, Recorded Investment, Aging [Abstract]
Past Due	118	127
Loans and Leases Receivable, Nonperforming, Accrual of Interest	110	104
Nonaccrual Status	10	23
Residential
Financing Receivable, Recorded Investment, Aging [Abstract]
Past Due	432	392
Loans and Leases Receivable, Nonperforming, Accrual of Interest	26	37
Nonaccrual Status	$ 407	$ 355

Investments (Net Unrealized Inv

Investments (Net Unrealized Investment Gains Losses) (Details) - USD ($) $ in Millions	Jun. 30, 2017	Dec. 31, 2016
Components of net unrealized investment gains (losses) included in accumulated other comprehensive loss
Fixed maturity securities	$ 25,818	$ 20,300
Fixed maturity securities with noncredit OTTI losses included in AOCI	37	8
Total fixed maturity securities	25,855	20,308
Equity securities	522	485
Derivatives	2,468	2,923
Other	169	23
Subtotal	29,014	23,739
Future policy benefits	(2,046)	(1,114)
DAC and VOBA related to noncredit OTTI losses recognized in AOCI	(3)	(3)
DAC, VOBA and DSI	(1,750)	(1,430)
Policyholder dividend obligation	(2,237)	(1,931)
Subtotal	(6,036)	(4,478)
Deferred income tax benefit (expense) related to noncredit OTTI losses recognized in AOCI	(11)	(1)
Deferred income tax benefit (expense)	(7,923)	(6,623)
Net unrealized investment gains (losses)	15,044	12,637
Net unrealized investment gains (losses) attributable to noncontrolling interests	(6)	(6)
Net unrealized investment gains (losses) attributable to MetLife, Inc.	$ 15,038	$ 12,631

Investments (Changes in Net Unr

Investments (Changes in Net Unrealized Investment Gains Losses) (Details) $ in Millions	6 Months Ended
	Jun. 30, 2017USD ($)
Changes In Net Unrealized Investment Gains Losses Included In Accumulated Other Comprehensive Loss [Abstract]
Balance, beginning of period	$ 12,631
Fixed maturity securities on which noncredit OTTI losses have been recognized	29
Unrealized investment gains (losses) during the period	5,246
Unrealized investment gains (losses) relating to:
Future policy benefits	(932)
DAC and VOBA related to noncredit OTTI losses recognized in AOCI	0
DAC, VOBA and DSI	(320)
Policyholder dividend obligation	(306)
Deferred income tax benefit (expense) related to noncredit OTTI losses recognized in AOCI	(10)
Deferred income tax benefit (expense)	(1,300)
Net unrealized investment gains (losses)	15,038
Net unrealized investment gains (losses) attributable to noncontrolling interests	0
Balance, end of period	15,038
Change in net unrealized investment gains (losses)	2,407
Change in net unrealized investment gains (losses) attributable to noncontrolling interests	0
Change in net unrealized investment gains (losses) attributable to MetLife, Inc.	$ 2,407

Investments (Securities Lending

Investments (Securities Lending) (Details) - USD ($) $ in Millions	Jun. 30, 2017	Dec. 31, 2016
Securities Financing Transaction [Line Items]
Cash collateral on deposit from counterparties	$ 26,440	$ 26,755
Security collateral on deposit from counterparties	33	46
Reinvestment portfolio — estimated fair value	26,652	26,704
Amortized cost
Securities Financing Transaction [Line Items]
Securities loaned	23,466	24,692
Estimated fair value
Securities Financing Transaction [Line Items]
Securities loaned	$ 25,787	$ 26,308

Investments (Securities Lendi58

Investments (Securities Lending Remaining Tenor) (Details) - USD ($) $ in Millions	Jun. 30, 2017	Dec. 31, 2016
Securities Financing Transaction [Line Items]
Total	$ 26,440	$ 26,755
U.S. government and agency
Securities Financing Transaction [Line Items]
Total	25,490	25,136
Agency RMBS
Securities Financing Transaction [Line Items]
Total	256	274
Foreign government
Securities Financing Transaction [Line Items]
Total	694	764
U.S. corporate
Securities Financing Transaction [Line Items]
Total	0	523
Foreign corporate
Securities Financing Transaction [Line Items]
Total	0	58
Maturity Overnight
Securities Financing Transaction [Line Items]
Total	6,197	6,608
Maturity Overnight | U.S. government and agency
Securities Financing Transaction [Line Items]
Total	6,197	6,608
Maturity Overnight | Agency RMBS
Securities Financing Transaction [Line Items]
Total	0	0
Maturity Overnight | Foreign government
Securities Financing Transaction [Line Items]
Total	0	0
Maturity Overnight | U.S. corporate
Securities Financing Transaction [Line Items]
Total	0	0
Maturity Overnight | Foreign corporate
Securities Financing Transaction [Line Items]
Total	0	0
Maturity Less than 30 Days
Securities Financing Transaction [Line Items]
Total	13,460	9,604
Maturity Less than 30 Days | U.S. government and agency
Securities Financing Transaction [Line Items]
Total	12,510	8,403
Maturity Less than 30 Days | Agency RMBS
Securities Financing Transaction [Line Items]
Total	256	0
Maturity Less than 30 Days | Foreign government
Securities Financing Transaction [Line Items]
Total	694	620
Maturity Less than 30 Days | U.S. corporate
Securities Financing Transaction [Line Items]
Total	0	523
Maturity Less than 30 Days | Foreign corporate
Securities Financing Transaction [Line Items]
Total	0	58
Maturity 30 to 180 Days
Securities Financing Transaction [Line Items]
Total	6,783	10,543
Maturity 30 to 180 Days | U.S. government and agency
Securities Financing Transaction [Line Items]
Total	6,783	10,125
Maturity 30 to 180 Days | Agency RMBS
Securities Financing Transaction [Line Items]
Total	0	274
Maturity 30 to 180 Days | Foreign government
Securities Financing Transaction [Line Items]
Total	0	144
Maturity 30 to 180 Days | U.S. corporate
Securities Financing Transaction [Line Items]
Total	0	0
Maturity 30 to 180 Days | Foreign corporate
Securities Financing Transaction [Line Items]
Total	$ 0	$ 0

Investments (Repurchase Agreeme

Investments (Repurchase Agreements - Securities Lending) (Details) - USD ($) $ in Millions	Jun. 30, 2017	Dec. 31, 2016
Securities Financing Transaction [Line Items]
Cash collateral on deposit from counterparties	$ 26,440	$ 26,755
Reinvestment portfolio — estimated fair value	26,652	26,704
Repurchase Agreements [Member]
Securities Financing Transaction [Line Items]
Cash collateral on deposit from counterparties	1,951	102
Reinvestment portfolio — estimated fair value	1,963	100
Repurchase Agreements [Member] | Amortized cost
Securities Financing Transaction [Line Items]
Securities Sold under Agreements to Repurchase	1,836	98
Repurchase Agreements [Member] | Estimated fair value
Securities Financing Transaction [Line Items]
Securities Sold under Agreements to Repurchase	$ 1,982	$ 113

Investments (Repurchase Agree60

Investments (Repurchase Agreements - Securities Lending Remaining Tenor) (Details) - USD ($) $ in Millions	Jun. 30, 2017	Dec. 31, 2016
Securities Financing Transaction [Line Items]
Total	$ 26,440	$ 26,755
Repurchase Agreements [Member]
Securities Financing Transaction [Line Items]
Total	1,951	102
U.S. government and agency
Securities Financing Transaction [Line Items]
Total	25,490	25,136
U.S. government and agency | Repurchase Agreements [Member]
Securities Financing Transaction [Line Items]
Total	1,855	5
Other Debt Obligations [Member] | Repurchase Agreements [Member]
Securities Financing Transaction [Line Items]
Total	96	97
Foreign corporate
Securities Financing Transaction [Line Items]
Total	0	58
Maturity Less than 30 Days
Securities Financing Transaction [Line Items]
Total	13,460	9,604
Maturity Less than 30 Days | Repurchase Agreements [Member]
Securities Financing Transaction [Line Items]
Total	1,899	51
Maturity Less than 30 Days | U.S. government and agency
Securities Financing Transaction [Line Items]
Total	12,510	8,403
Maturity Less than 30 Days | U.S. government and agency | Repurchase Agreements [Member]
Securities Financing Transaction [Line Items]
Total	1,855	5
Maturity Less than 30 Days | Other Debt Obligations [Member] | Repurchase Agreements [Member]
Securities Financing Transaction [Line Items]
Total	44	46
Maturity Less than 30 Days | Foreign corporate
Securities Financing Transaction [Line Items]
Total	0	58
Maturity 30 to 180 Days
Securities Financing Transaction [Line Items]
Total	6,783	10,543
Maturity 30 to 180 Days | Repurchase Agreements [Member]
Securities Financing Transaction [Line Items]
Total	52	51
Maturity 30 to 180 Days | U.S. government and agency
Securities Financing Transaction [Line Items]
Total	6,783	10,125
Maturity 30 to 180 Days | U.S. government and agency | Repurchase Agreements [Member]
Securities Financing Transaction [Line Items]
Total	0	0
Maturity 30 to 180 Days | Other Debt Obligations [Member] | Repurchase Agreements [Member]
Securities Financing Transaction [Line Items]
Total	52	51
Maturity 30 to 180 Days | Foreign corporate
Securities Financing Transaction [Line Items]
Total	$ 0	$ 0

Investments (Invested Assets on

Investments (Invested Assets on Deposit, Held In Trust and Pledged as Collateral) (Details) - USD ($) $ in Millions	Jun. 30, 2017	Dec. 31, 2016
Investments, Debt and Equity Securities [Abstract]
Invested assets on deposit (regulatory deposits)	$ 9,168	$ 9,573
Invested assets held in trust (collateral financing arrangements and reinsurance agreements)	6,481	11,111
Invested assets pledged as collateral	27,152	27,431
Total invested assets on deposit, held in trust and pledged as collateral	$ 42,801	$ 48,115

Investments (Consolidated Varia

Investments (Consolidated Variable Interest Entities) (Details) - USD ($) $ in Millions	Jun. 30, 2017	Dec. 31, 2016
Variable Interest Entity [Line Items]
Total Assets	$ 185	$ 3,618
Total Liabilities	28	35
MRSC collateral financing arrangement
Variable Interest Entity [Line Items]
Total Assets	0	3,422
Total Liabilities	0	0
CSEs (assets (primarily loans) and liabilities (primarily debt))
Variable Interest Entity [Line Items]
Total Assets	136	146
Total Liabilities	28	35
Other
Variable Interest Entity [Line Items]
Total Assets	49	50
Total Liabilities	$ 0	$ 0

Investments (Unconsolidated Var

Investments (Unconsolidated Variable Interest Entities) (Details) - USD ($) $ in Millions	Jun. 30, 2017	Dec. 31, 2016
Variable Interest Entity [Line Items]
Carrying Amount Asset	$ 73,034	$ 71,339
Carrying Amount Liability	79,304	77,008
Other limited partnership interests
Variable Interest Entity [Line Items]
Carrying Amount Asset	6,344	6,208
Carrying Amount Liability	12,136	11,282
Other invested assets
Variable Interest Entity [Line Items]
Carrying Amount Asset	2,302	2,261
Carrying Amount Liability	2,762	2,837
Other
Variable Interest Entity [Line Items]
Carrying Amount Asset	382	252
Carrying Amount Liability	400	271
Structured securities (RMBS, CMBS, and ABS)
Variable Interest Entity [Line Items]
Carrying Amount Asset	61,218	59,773
Carrying Amount Liability	61,218	59,773
U.S. corporate and foreign corporate securities
Variable Interest Entity [Line Items]
Carrying Amount Asset	2,788	2,845
Carrying Amount Liability	$ 2,788	$ 2,845

Investments (Net Investment Inc

Investments (Net Investment Income) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Net Investment Income [Line Items]
Less: Investment expenses	$ 310	$ 285	$ 607	$ 581
Subtotal	4,959	4,887	10,155	9,446
Securities Investment
Net Investment Income [Line Items]
Subtotal	5,053	4,979	10,128	9,928
Subtotal	4,743	4,694	9,521	9,347
Fixed maturity securities
Net Investment Income [Line Items]
Subtotal	3,431	3,564	6,851	7,218
Equity securities
Net Investment Income [Line Items]
Subtotal	35	33	69	70
Actively traded securities and FVO general account securities
Net Investment Income [Line Items]
Subtotal	16	10	45	16
Mortgage loans
Net Investment Income [Line Items]
Subtotal	869	851	1,714	1,658
Policy loans
Net Investment Income [Line Items]
Subtotal	146	147	291	296
Real estate and real estate joint ventures
Net Investment Income [Line Items]
Subtotal	184	149	349	306
Other limited partnership interests
Net Investment Income [Line Items]
Subtotal	243	120	540	166
Cash, cash equivalents and short-term investments
Net Investment Income [Line Items]
Subtotal	67	43	126	83
Operating joint ventures
Net Investment Income [Line Items]
Subtotal	5	11	7	23
Other
Net Investment Income [Line Items]
Subtotal	57	51	136	92
Consolidated Securitization Entities And Fair Value Option Contractholder-Directed Unit-Linked
Net Investment Income [Line Items]
Subtotal	216	193	634	99
FVO contractholder-directed unit-linked investments
Net Investment Income [Line Items]
Subtotal	214	191	630	94
Commercial mortgage loans | Consolidated Securitization Entities
Net Investment Income [Line Items]
Subtotal	$ 2	$ 2	$ 4	$ 5

Investments (Components of Net

Investments (Components of Net Investment Gains Losses) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Marketable Securities, Gain (Loss) [Abstract]
Fixed maturity securities — net gains (losses) on sales and disposals	$ 45	$ 165	$ 5	$ 263
Equity securities — net gains (losses) on sales and disposals	7	13	50	19
Other net investment gains (losses):
Mortgage loans	(16)	(98)	(31)	(162)
Real estate and real estate joint ventures	271	45	270	47
Other limited partnership interests	(12)	(14)	(29)	(41)
Other	(69)	(57)	(127)	(75)
Subtotal	218	24	122	(108)
FVO CSEs - changes in estimated fair value subsequent to consolidation:
Commercial mortgage loans	0	(1)	(1)	0
Securities	0	0	0	1
Long-term debt — related to commercial mortgage loans	(1)	0	0	0
Non-investment portfolio gains (losses)	(113)	243	(9)	388
Subtotal	(114)	242	(10)	389
Total net investment gains (losses)	104	266	112	281
Fixed Maturity Securities
Marketable Securities, Gain (Loss) [Abstract]
Total OTTI losses recognized in earnings	(3)	(14)	(3)	(92)
Net investment gains (losses)	42	151	2	171
Industrial
Marketable Securities, Gain (Loss) [Abstract]
Total OTTI losses recognized in earnings	0	(8)	0	(79)
Communications
Marketable Securities, Gain (Loss) [Abstract]
Total OTTI losses recognized in earnings	0	0	0	(3)
U.S. corporate and foreign corporate securities
Marketable Securities, Gain (Loss) [Abstract]
Total OTTI losses recognized in earnings	0	(8)	0	(82)
RMBS
Marketable Securities, Gain (Loss) [Abstract]
Total OTTI losses recognized in earnings	0	(4)	0	(8)
Equity securities
Marketable Securities, Gain (Loss) [Abstract]
Total OTTI losses recognized in earnings	(5)	(16)	(13)	(67)
Net investment gains (losses)	2	(3)	37	(48)
Nonredeemable Preferred Stock [Member]
Marketable Securities, Gain (Loss) [Abstract]
Total OTTI losses recognized in earnings	0	0	(1)	0
Common Stock
Marketable Securities, Gain (Loss) [Abstract]
Total OTTI losses recognized in earnings	(5)	(16)	(12)	(67)
ABS
Marketable Securities, Gain (Loss) [Abstract]
Total OTTI losses recognized in earnings	$ 0	$ (2)	0	(2)
State and political subdivision
Marketable Securities, Gain (Loss) [Abstract]
Total OTTI losses recognized in earnings			$ (3)	$ 0

Investments (Sales or Disposals

Investments (Sales or Disposals and Impairments of Fixed Maturity and Equity Securities) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Fixed Maturity Securities
Components of Sales or Disposals of Fixed Maturity and Equity Securities
Proceeds	$ 15,106	$ 26,267	$ 31,543	$ 58,261
Gross investment gains	129	283	279	715
Gross investment losses	(84)	(118)	(274)	(452)
Total OTTI losses recognized in earnings:
Total OTTI losses recognized in earnings	(3)	(14)	(3)	(92)
Net investment gains (losses)	42	151	2	171
Equity securities
Components of Sales or Disposals of Fixed Maturity and Equity Securities
Proceeds	279	28	399	87
Gross investment gains	10	14	57	24
Gross investment losses	(3)	(1)	(7)	(5)
Total OTTI losses recognized in earnings:
Total OTTI losses recognized in earnings	(5)	(16)	(13)	(67)
Net investment gains (losses)	$ 2	$ (3)	$ 37	$ (48)

Investments (Credit Loss Rollfo

Investments (Credit Loss Rollforward) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Roll Forward]
Balance, beginning of period	$ 179	$ 270	$ 215	$ 277
Additions:
Additional impairments — credit loss OTTI on securities previously impaired	0	6	0	8
Reductions:
Sales (maturities, pay downs or prepayments) of securities previously impaired as credit loss OTTI	(6)	(18)	(42)	(27)
Balance, end of period	$ 173	$ 258	$ 173	$ 258

Investments (Fixed Maturity a68

Investments (Fixed Maturity and Equity Securities Available-For-Sale - Narrative) (Details) - USD ($) $ in Millions	Jun. 30, 2017	Dec. 31, 2016
Summary of Certain Fixed Maturity Securities
Gross Unrealized OTTI Loss	$ (37)	$ (8)
Available-for-sale Securities, Debt Securities	364,084	350,889
CMBS
Summary of Certain Fixed Maturity Securities
Gross Unrealized OTTI Loss	1	1
Available-for-sale Securities, Debt Securities	11,103	11,272
Non-income producing fixed maturity securities
Summary of Certain Fixed Maturity Securities
Available-for-sale Securities, Debt Securities	1	6
Gross Unrealized Gain	$ (4)	$ (2)

Investments (Evaluation of Avai

Investments (Evaluation of Available-For-Sale Securities for OTTI and Evaluating Temporarily Impaired AFS Securities - Narrative) (Details) $ in Millions	6 Months Ended
	Jun. 30, 2017USD ($)Contracts	Dec. 31, 2016USD ($)
Schedule of Available-for-sale Securities [Line Items]
Equity securities available-for-sale with gross unrealized loss of equal to or greater than stated percentage	20.00%
Fixed Maturity Securities
Schedule of Available-for-sale Securities [Line Items]
Change in Gross Unrealized Temporary Loss	$ (2,100)
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	2,800
Gross Unrealized Temporary Loss	1,394	$ 1,961
20% or more | Six months or greater | Fixed Maturity Securities
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	$ 168
Number of Securities | Contracts	56
External Credit Rating, Non Investment Grade | 20% or more | Six months or greater | Fixed Maturity Securities
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	$ 36
Number of Securities | Contracts	28
Percentage of gross unrealized loss	21.00%
External Credit Rating, Investment Grade | 20% or more | Six months or greater | Fixed Maturity Securities
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	$ 132
Number of Securities | Contracts	28
Percentage of gross unrealized loss	79.00%

Investments (Mortgage Loans - N

Investments (Mortgage Loans - Narrative) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2016
Mortgage Loans on Real Estate [Line Items]
Financing Receivable, Significant Purchases	$ 888	$ 1,200	$ 1,800	$ 1,400
Percentage of Mortgage Loans Classified as Performing	99.00%		99.00%		99.00%
Commercial
Mortgage Loans on Real Estate [Line Items]
Impaired Financing Receivable, Average Recorded Investment	$ 6	184	$ 8	142
Agricultural
Mortgage Loans on Real Estate [Line Items]
Impaired Financing Receivable, Average Recorded Investment	16	52	24	57
Estimated fair value of mortgage loans held-for-investment	15,100		15,100		$ 14,700
Residential
Mortgage Loans on Real Estate [Line Items]
Impaired Financing Receivable, Average Recorded Investment	280	$ 175	268	$ 160
Estimated fair value of mortgage loans held-for-investment	$ 13,200		$ 13,200		$ 12,100

Investments (Cash Equivalents -

Investments (Cash Equivalents - Narrative) (Details) - USD ($) $ in Billions	Jun. 30, 2017	Dec. 31, 2016
Investments, Debt and Equity Securities [Abstract]
Cash equivalents	$ 11	$ 12.2

Investments (Concentrations of

Investments (Concentrations of Credit Risk - Narrative) (Details) - USD ($) $ in Billions	6 Months Ended	12 Months Ended
	Jun. 30, 2017	Dec. 31, 2016
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items]
Securities holdings exposure in single issuer greater than stated percentage of Company's equity	10.00%	10.00%
Foreign government | Japan
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items]
Government and agency fixed maturity securities	$ 26.5	$ 24.9

Investments (Securities Lendi73

Investments (Securities Lending Remaining Tenor - Narrative) (Details) - Estimated fair value $ in Billions	Jun. 30, 2017USD ($)
Securities Financing Transaction [Line Items]
Cash collateral on deposit from counterparties	$ 6
Securities Investment
Securities Financing Transaction [Line Items]
Percentage of Reinvestment Portfolio in Fixed Maturity Securities	65.00%

Investments (Repurchase Agree74

Investments (Repurchase Agreements - Narrative) (Details)	Jun. 30, 2017
Repurchase Agreements [Member]
Securities Financing Transaction [Line Items]
Percentage of Reinvestment Portfolio in Fixed Maturity Securities	65.00%

Investments (Variable Interest

Investments (Variable Interest Entities - Narrative) (Details) - USD ($) $ in Millions	Jun. 30, 2017	Dec. 31, 2016
Investments, Debt and Equity Securities [Abstract]
Tax credits guaranteed by third parties that reduce maximum exposure to loss related to other invested assets	$ 137	$ 150

Investments (Net Investment I76

Investments (Net Investment Income - Narrative) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2016
Net Investment Income [Line Items]
Fair Value Option And Trading Securities	$ 14,762		$ 14,762		$ 13,923
FVO contractholder-directed unit-linked investments
Net Investment Income [Line Items]
Changes in estimated fair value included in net investment income	$ 119	$ 79	$ 449	$ (121)
Actively Traded Securities At Estimated Fair Value And Fvo General Account Securities [Member]
Net Investment Income [Line Items]
Changes in estimated fair value included in net investment income		$ 7		$ 3

Investments (Net Investment Gai

Investments (Net Investment Gains Losses - Narrative) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Investments, Debt and Equity Securities [Abstract]
Gains (losses) from foreign currency transactions	$ (117)	$ 289	$ (68)	$ 368

Derivatives (Primary Risks) (De

Derivatives (Primary Risks) (Details) - USD ($) $ in Millions	Jun. 30, 2017	Dec. 31, 2016
Derivatives, Fair Value [Line Items]
Gross Notional Amount	$ 434,881	$ 418,148
Estimated Fair Value Assets	12,178	15,761
Estimated Fair Value Liabilities	8,217	10,804
Derivatives Designated as Hedging Instruments:
Derivatives, Fair Value [Line Items]
Gross Notional Amount	54,918	52,199
Estimated Fair Value Assets	4,386	4,902
Estimated Fair Value Liabilities	2,233	2,803
Derivatives Designated as Hedging Instruments: | Fair Value Hedges [Member]
Derivatives, Fair Value [Line Items]
Gross Notional Amount	7,154	7,637
Estimated Fair Value Assets	2,374	2,296
Estimated Fair Value Liabilities	64	284
Derivatives Designated as Hedging Instruments: | Fair Value Hedges [Member] | Interest rate swaps
Derivatives, Fair Value [Line Items]
Gross Notional Amount	4,347	5,331
Estimated Fair Value Assets	2,326	2,262
Estimated Fair Value Liabilities	5	6
Derivatives Designated as Hedging Instruments: | Fair Value Hedges [Member] | Foreign currency swaps
Derivatives, Fair Value [Line Items]
Gross Notional Amount	632	1,221
Estimated Fair Value Assets	48	34
Estimated Fair Value Liabilities	0	224
Derivatives Designated as Hedging Instruments: | Fair Value Hedges [Member] | Foreign currency forwards
Derivatives, Fair Value [Line Items]
Gross Notional Amount	2,175	1,085
Estimated Fair Value Assets	0	0
Estimated Fair Value Liabilities	59	54
Derivatives Designated as Hedging Instruments: | Cash Flow Hedges [Member]
Derivatives, Fair Value [Line Items]
Gross Notional Amount	37,596	34,290
Estimated Fair Value Assets	1,971	2,411
Estimated Fair Value Liabilities	2,004	2,469
Derivatives Designated as Hedging Instruments: | Cash Flow Hedges [Member] | Interest rate swaps
Derivatives, Fair Value [Line Items]
Gross Notional Amount	3,886	2,085
Estimated Fair Value Assets	331	332
Estimated Fair Value Liabilities	16	34
Derivatives Designated as Hedging Instruments: | Cash Flow Hedges [Member] | Interest rate forwards
Derivatives, Fair Value [Line Items]
Gross Notional Amount	3,542	4,032
Estimated Fair Value Assets	0	0
Estimated Fair Value Liabilities	210	370
Derivatives Designated as Hedging Instruments: | Cash Flow Hedges [Member] | Foreign currency swaps
Derivatives, Fair Value [Line Items]
Gross Notional Amount	30,168	28,173
Estimated Fair Value Assets	1,640	2,079
Estimated Fair Value Liabilities	1,778	2,065
Derivatives Designated as Hedging Instruments: | Foreign Operations Hedges [Member]
Derivatives, Fair Value [Line Items]
Gross Notional Amount	10,168	10,272
Estimated Fair Value Assets	41	195
Estimated Fair Value Liabilities	165	50
Derivatives Designated as Hedging Instruments: | Foreign Operations Hedges [Member] | Foreign currency forwards
Derivatives, Fair Value [Line Items]
Gross Notional Amount	1,932	1,394
Estimated Fair Value Assets	7	47
Estimated Fair Value Liabilities	51	5
Derivatives Designated as Hedging Instruments: | Foreign Operations Hedges [Member] | Currency options
Derivatives, Fair Value [Line Items]
Gross Notional Amount	8,236	8,878
Estimated Fair Value Assets	34	148
Estimated Fair Value Liabilities	114	45
Derivatives Not Designated or Not Qualifying as Hedging Instruments:
Derivatives, Fair Value [Line Items]
Gross Notional Amount	379,963	365,949
Estimated Fair Value Assets	7,792	10,859
Estimated Fair Value Liabilities	5,984	8,001
Derivatives Not Designated or Not Qualifying as Hedging Instruments: | Interest rate swaps
Derivatives, Fair Value [Line Items]
Gross Notional Amount	82,022	81,524
Estimated Fair Value Assets	3,396	6,017
Estimated Fair Value Liabilities	1,465	3,328
Derivatives Not Designated or Not Qualifying as Hedging Instruments: | Interest rate forwards
Derivatives, Fair Value [Line Items]
Gross Notional Amount	358	613
Estimated Fair Value Assets	0	0
Estimated Fair Value Liabilities	34	25
Derivatives Not Designated or Not Qualifying as Hedging Instruments: | Interest rate floors
Derivatives, Fair Value [Line Items]
Gross Notional Amount	7,201	14,201
Estimated Fair Value Assets	136	187
Estimated Fair Value Liabilities	0	9
Derivatives Not Designated or Not Qualifying as Hedging Instruments: | Interest rate caps
Derivatives, Fair Value [Line Items]
Gross Notional Amount	81,560	90,400
Estimated Fair Value Assets	72	137
Estimated Fair Value Liabilities	2	2
Derivatives Not Designated or Not Qualifying as Hedging Instruments: | Interest rate futures
Derivatives, Fair Value [Line Items]
Gross Notional Amount	5,143	6,081
Estimated Fair Value Assets	24	12
Estimated Fair Value Liabilities	2	12
Derivatives Not Designated or Not Qualifying as Hedging Instruments: | Interest rate options
Derivatives, Fair Value [Line Items]
Gross Notional Amount	32,884	20,854
Estimated Fair Value Assets	822	764
Estimated Fair Value Liabilities	48	1
Derivatives Not Designated or Not Qualifying as Hedging Instruments: | Equity total return swaps
Derivatives, Fair Value [Line Items]
Gross Notional Amount	4,198	5,425
Estimated Fair Value Assets	26	2
Estimated Fair Value Liabilities	389	738
Derivatives Not Designated or Not Qualifying as Hedging Instruments: | Synthetic GICs
Derivatives, Fair Value [Line Items]
Gross Notional Amount	6,305	5,566
Estimated Fair Value Assets	0	0
Estimated Fair Value Liabilities	0	0
Derivatives Not Designated or Not Qualifying as Hedging Instruments: | Foreign currency swaps
Derivatives, Fair Value [Line Items]
Gross Notional Amount	13,031	12,912
Estimated Fair Value Assets	1,071	1,600
Estimated Fair Value Liabilities	451	466
Derivatives Not Designated or Not Qualifying as Hedging Instruments: | Foreign currency forwards
Derivatives, Fair Value [Line Items]
Gross Notional Amount	17,206	15,580
Estimated Fair Value Assets	103	126
Estimated Fair Value Liabilities	572	977
Derivatives Not Designated or Not Qualifying as Hedging Instruments: | Currency futures
Derivatives, Fair Value [Line Items]
Gross Notional Amount	869	915
Estimated Fair Value Assets	0	0
Estimated Fair Value Liabilities	4	0
Derivatives Not Designated or Not Qualifying as Hedging Instruments: | Currency options
Derivatives, Fair Value [Line Items]
Gross Notional Amount	2,481	3,615
Estimated Fair Value Assets	51	195
Estimated Fair Value Liabilities	0	17
Derivatives Not Designated or Not Qualifying as Hedging Instruments: | Credit default swaps — purchased
Derivatives, Fair Value [Line Items]
Gross Notional Amount	1,955	2,038
Estimated Fair Value Assets	8	14
Estimated Fair Value Liabilities	42	40
Derivatives Not Designated or Not Qualifying as Hedging Instruments: | Credit default swaps — written
Derivatives, Fair Value [Line Items]
Gross Notional Amount	13,377	12,645
Estimated Fair Value Assets	259	189
Estimated Fair Value Liabilities	4	9
Derivatives Not Designated or Not Qualifying as Hedging Instruments: | Equity futures
Derivatives, Fair Value [Line Items]
Gross Notional Amount	7,904	12,494
Estimated Fair Value Assets	12	68
Estimated Fair Value Liabilities	3	3
Derivatives Not Designated or Not Qualifying as Hedging Instruments: | Equity index options
Derivatives, Fair Value [Line Items]
Gross Notional Amount	77,608	54,028
Estimated Fair Value Assets	1,543	1,323
Estimated Fair Value Liabilities	2,024	1,458
Derivatives Not Designated or Not Qualifying as Hedging Instruments: | Equity variance swaps
Derivatives, Fair Value [Line Items]
Gross Notional Amount	23,231	23,157
Estimated Fair Value Assets	266	223
Estimated Fair Value Liabilities	866	756
Derivatives Not Designated or Not Qualifying as Hedging Instruments: | Equity total return swaps
Derivatives, Fair Value [Line Items]
Gross Notional Amount	2,630	3,901
Estimated Fair Value Assets	3	2
Estimated Fair Value Liabilities	$ 78	$ 160

Derivatives (Net Derivative Gai

Derivatives (Net Derivative Gains Losses) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Components of Net Derivatives Gains (Losses)
Derivatives and hedging gains (losses)	$ (506)	$ 2,525	$ (2,010)	$ 5,029
Embedded derivatives gains (losses)	69	(4,624)	647	(5,793)
Total net derivative gains (losses)	$ (437)	$ (2,099)	$ (1,363)	$ (764)

Derivatives (Earned Income On D

Derivatives (Earned Income On Derivatives) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Derivative Instruments, Gain (Loss) [Line Items]
Interest Income (Expense), Nonoperating, Net	$ 277	$ 323	$ 643	$ 672
Derivatives Designated as Hedging Instruments: | Net investment income
Derivative Instruments, Gain (Loss) [Line Items]
Interest Income (Expense), Nonoperating, Net	76	73	157	130
Derivatives Designated as Hedging Instruments: | Interest credited to policyholder account balances
Derivative Instruments, Gain (Loss) [Line Items]
Interest Income (Expense), Nonoperating, Net	(14)	1	(20)	7
Derivatives Designated as Hedging Instruments: | Other expenses
Derivative Instruments, Gain (Loss) [Line Items]
Interest Income (Expense), Nonoperating, Net	(2)	(4)	(5)	(6)
Derivatives Not Designated or Not Qualifying as Hedging Instruments: | Net investment income
Derivative Instruments, Gain (Loss) [Line Items]
Interest Income (Expense), Nonoperating, Net	0	(1)	0	(1)
Derivatives Not Designated or Not Qualifying as Hedging Instruments: | Net derivative gains (losses)
Derivative Instruments, Gain (Loss) [Line Items]
Interest Income (Expense), Nonoperating, Net	212	248	500	531
Derivatives Not Designated or Not Qualifying as Hedging Instruments: | Policyholder benefits and claims
Derivative Instruments, Gain (Loss) [Line Items]
Interest Income (Expense), Nonoperating, Net	$ 5	$ 6	$ 11	$ 11

Derivatives (Gains Losses Recog

Derivatives (Gains Losses Recognized in Income Not Designated or Qualifying) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, Gain (Loss) on Derivative, Net	$ 74	$ 287	$ 65	$ 788
Derivatives Not Designated or Not Qualifying as Hedging Instruments: | Net derivative gains (losses)
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, Gain (Loss) on Derivative, Net	(952)	2,621	(2,531)	5,058
Derivatives Not Designated or Not Qualifying as Hedging Instruments: | Net derivative gains (losses) | Interest rate derivatives
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, Gain (Loss) on Derivative, Net	277	1,657	(382)	3,629
Derivatives Not Designated or Not Qualifying as Hedging Instruments: | Net derivative gains (losses) | Foreign currency exchange rate derivatives
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, Gain (Loss) on Derivative, Net	(566)	1,196	(223)	1,719
Derivatives Not Designated or Not Qualifying as Hedging Instruments: | Net derivative gains (losses) | Credit derivatives — purchased
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, Gain (Loss) on Derivative, Net	(7)	(22)	(15)	(27)
Derivatives Not Designated or Not Qualifying as Hedging Instruments: | Net derivative gains (losses) | Credit derivatives — written
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, Gain (Loss) on Derivative, Net	49	3	87	(3)
Derivatives Not Designated or Not Qualifying as Hedging Instruments: | Net derivative gains (losses) | Equity derivatives
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, Gain (Loss) on Derivative, Net	(705)	(213)	(1,998)	(260)
Derivatives Not Designated or Not Qualifying as Hedging Instruments: | Net investment income
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, Gain (Loss) on Derivative, Net	(4)	(4)	(5)	(14)
Derivatives Not Designated or Not Qualifying as Hedging Instruments: | Net investment income | Interest rate derivatives
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, Gain (Loss) on Derivative, Net	(2)	0	0	0
Derivatives Not Designated or Not Qualifying as Hedging Instruments: | Net investment income | Foreign currency exchange rate derivatives
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, Gain (Loss) on Derivative, Net	0	0	0	0
Derivatives Not Designated or Not Qualifying as Hedging Instruments: | Net investment income | Credit derivatives — purchased
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, Gain (Loss) on Derivative, Net	0	(10)	0	0
Derivatives Not Designated or Not Qualifying as Hedging Instruments: | Net investment income | Credit derivatives — written
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, Gain (Loss) on Derivative, Net	0	9	0	0
Derivatives Not Designated or Not Qualifying as Hedging Instruments: | Net investment income | Equity derivatives
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, Gain (Loss) on Derivative, Net	(2)	(3)	(5)	(14)
Derivatives Not Designated or Not Qualifying as Hedging Instruments: | Policyholder benefits and claims
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, Gain (Loss) on Derivative, Net	(146)	(21)	(401)	52
Derivatives Not Designated or Not Qualifying as Hedging Instruments: | Policyholder benefits and claims | Interest rate derivatives
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, Gain (Loss) on Derivative, Net	(12)	55	(11)	97
Derivatives Not Designated or Not Qualifying as Hedging Instruments: | Policyholder benefits and claims | Foreign currency exchange rate derivatives
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, Gain (Loss) on Derivative, Net	2	(11)	2	(12)
Derivatives Not Designated or Not Qualifying as Hedging Instruments: | Policyholder benefits and claims | Credit derivatives — purchased
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, Gain (Loss) on Derivative, Net	0	0	0	0
Derivatives Not Designated or Not Qualifying as Hedging Instruments: | Policyholder benefits and claims | Credit derivatives — written
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, Gain (Loss) on Derivative, Net	0	0	0	0
Derivatives Not Designated or Not Qualifying as Hedging Instruments: | Policyholder benefits and claims | Equity derivatives
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, Gain (Loss) on Derivative, Net	$ (136)	$ (65)	$ (392)	$ (33)

Derivatives (Fair Value Hedges)

Derivatives (Fair Value Hedges) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Derivative Instruments, Gain (Loss) [Line Items]
Net Derivative Gains (Losses) Recognized for Derivatives	$ 74	$ 287	$ 65	$ 788
Net Derivative Gains (Losses) Recognized for Hedged Items	13	(286)	28	(778)
Ineffectiveness Recognized in Net Derivative Gains (Losses)	87	1	93	10
Interest rate swaps | Fixed Maturity Securities
Derivative Instruments, Gain (Loss) [Line Items]
Net Derivative Gains (Losses) Recognized for Derivatives	0	(3)	1	(11)
Net Derivative Gains (Losses) Recognized for Hedged Items	(1)	0	(2)	7
Ineffectiveness Recognized in Net Derivative Gains (Losses)	(1)	(3)	(1)	(4)
Interest rate swaps | Policyholder account balances [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Net Derivative Gains (Losses) Recognized for Derivatives	52	197	(1)	543
Net Derivative Gains (Losses) Recognized for Hedged Items	18	(200)	70	(548)
Ineffectiveness Recognized in Net Derivative Gains (Losses)	70	(3)	69	(5)
Foreign currency swaps | Foreign-denominated fixed maturity securities
Derivative Instruments, Gain (Loss) [Line Items]
Net Derivative Gains (Losses) Recognized for Derivatives	(2)	7	(5)	6
Net Derivative Gains (Losses) Recognized for Hedged Items	3	(8)	6	(6)
Ineffectiveness Recognized in Net Derivative Gains (Losses)	1	(1)	1	0
Foreign currency swaps | Foreign-denominated policyholder account balances [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Net Derivative Gains (Losses) Recognized for Derivatives	45	(51)	46	(26)
Net Derivative Gains (Losses) Recognized for Hedged Items	(26)	48	(24)	23
Ineffectiveness Recognized in Net Derivative Gains (Losses)	19	(3)	22	(3)
Foreign currency forwards | Foreign-denominated fixed maturity securities
Derivative Instruments, Gain (Loss) [Line Items]
Net Derivative Gains (Losses) Recognized for Derivatives	(21)	137	24	276
Net Derivative Gains (Losses) Recognized for Hedged Items	19	(126)	(22)	(254)
Ineffectiveness Recognized in Net Derivative Gains (Losses)	$ (2)	$ 11	$ 2	$ 22

Derivatives (Cash Flow Hedges)

Derivatives (Cash Flow Hedges) (Details) - Cash Flow Hedges [Member] - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Derivatives in cash flow hedging relationships
Amount of Gains (Losses) Deferred in AOCI (Effective Portion)	$ (7)	$ 800	$ 203	$ 1,496
Interest rate swaps
Derivatives in cash flow hedging relationships
Amount of Gains (Losses) Deferred in AOCI (Effective Portion)	73	140	78	353
Foreign currency swaps
Derivatives in cash flow hedging relationships
Amount of Gains (Losses) Deferred in AOCI (Effective Portion)	(174)	622	(13)	1,096
Credit forwards [Member]
Derivatives in cash flow hedging relationships
Amount of Gains (Losses) Deferred in AOCI (Effective Portion)	0	0	0	0
Interest rate forwards
Derivatives in cash flow hedging relationships
Amount of Gains (Losses) Deferred in AOCI (Effective Portion)	94	38	138	47
Net derivative gains (losses)
Derivatives in cash flow hedging relationships
Amount and Location of Gains (Losses) Reclassified from Accumulated Other Comprehensive Income (Loss) into Income (Loss) (Effective Portion)	423	(249)	645	69
Amount and Location of Gains (Losses) Recognized In Income (Loss) on Derivatives (Ineffective Portion and Amount Excluded from Effectiveness Testing)	4	5	7	2
Net derivative gains (losses) | Interest rate swaps
Derivatives in cash flow hedging relationships
Amount and Location of Gains (Losses) Reclassified from Accumulated Other Comprehensive Income (Loss) into Income (Loss) (Effective Portion)	6	18	14	28
Amount and Location of Gains (Losses) Recognized In Income (Loss) on Derivatives (Ineffective Portion and Amount Excluded from Effectiveness Testing)	6	1	7	0
Net derivative gains (losses) | Foreign currency swaps
Derivatives in cash flow hedging relationships
Amount and Location of Gains (Losses) Reclassified from Accumulated Other Comprehensive Income (Loss) into Income (Loss) (Effective Portion)	414	(269)	632	37
Amount and Location of Gains (Losses) Recognized In Income (Loss) on Derivatives (Ineffective Portion and Amount Excluded from Effectiveness Testing)	(1)	4	1	2
Net derivative gains (losses) | Credit forwards [Member]
Derivatives in cash flow hedging relationships
Amount and Location of Gains (Losses) Reclassified from Accumulated Other Comprehensive Income (Loss) into Income (Loss) (Effective Portion)	1	3	1	3
Amount and Location of Gains (Losses) Recognized In Income (Loss) on Derivatives (Ineffective Portion and Amount Excluded from Effectiveness Testing)	0	0	0	0
Net derivative gains (losses) | Interest rate forwards
Derivatives in cash flow hedging relationships
Amount and Location of Gains (Losses) Reclassified from Accumulated Other Comprehensive Income (Loss) into Income (Loss) (Effective Portion)	2	(1)	(2)	1
Amount and Location of Gains (Losses) Recognized In Income (Loss) on Derivatives (Ineffective Portion and Amount Excluded from Effectiveness Testing)	(1)	0	(1)	0
Net Investment Income
Derivatives in cash flow hedging relationships
Amount and Location of Gains (Losses) Reclassified from Accumulated Other Comprehensive Income (Loss) into Income (Loss) (Effective Portion)	5	5	11	9
Net Investment Income | Interest rate swaps
Derivatives in cash flow hedging relationships
Amount and Location of Gains (Losses) Reclassified from Accumulated Other Comprehensive Income (Loss) into Income (Loss) (Effective Portion)	4	4	9	7
Net Investment Income | Foreign currency swaps
Derivatives in cash flow hedging relationships
Amount and Location of Gains (Losses) Reclassified from Accumulated Other Comprehensive Income (Loss) into Income (Loss) (Effective Portion)	(1)	(1)	(1)	(1)
Net Investment Income | Credit forwards [Member]
Derivatives in cash flow hedging relationships
Amount and Location of Gains (Losses) Reclassified from Accumulated Other Comprehensive Income (Loss) into Income (Loss) (Effective Portion)	0	0	0	0
Net Investment Income | Interest rate forwards
Derivatives in cash flow hedging relationships
Amount and Location of Gains (Losses) Reclassified from Accumulated Other Comprehensive Income (Loss) into Income (Loss) (Effective Portion)	2	2	3	3
Other expenses
Derivatives in cash flow hedging relationships
Amount and Location of Gains (Losses) Reclassified from Accumulated Other Comprehensive Income (Loss) into Income (Loss) (Effective Portion)	1	1	2	2
Other expenses | Interest rate swaps
Derivatives in cash flow hedging relationships
Amount and Location of Gains (Losses) Reclassified from Accumulated Other Comprehensive Income (Loss) into Income (Loss) (Effective Portion)	0	0	0	0
Other expenses | Foreign currency swaps
Derivatives in cash flow hedging relationships
Amount and Location of Gains (Losses) Reclassified from Accumulated Other Comprehensive Income (Loss) into Income (Loss) (Effective Portion)	0	0	1	1
Other expenses | Credit forwards [Member]
Derivatives in cash flow hedging relationships
Amount and Location of Gains (Losses) Reclassified from Accumulated Other Comprehensive Income (Loss) into Income (Loss) (Effective Portion)	0	0	0	0
Other expenses | Interest rate forwards
Derivatives in cash flow hedging relationships
Amount and Location of Gains (Losses) Reclassified from Accumulated Other Comprehensive Income (Loss) into Income (Loss) (Effective Portion)	$ 1	$ 1	$ 1	$ 1

Derivatives (Hedges of Net Inve

Derivatives (Hedges of Net Investments in Foreign Operations) (Details) - Foreign Operations Hedges [Member] - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gains (Losses) Deferred in AOCI (Effective Portion)	$ (33)	$ (250)	$ (359)	$ (649)
Foreign currency forwards
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gains (Losses) Deferred in AOCI (Effective Portion)	(31)	(104)	(126)	(335)
Currency options
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gains (Losses) Deferred in AOCI (Effective Portion)	$ (2)	$ (146)	$ (233)	$ (314)

Derivatives (Credit Derivatives

Derivatives (Credit Derivatives) (Details) - USD ($) $ in Millions	6 Months Ended	12 Months Ended
	Jun. 30, 2017	Dec. 31, 2016
Credit Derivatives [Line Items]
Estimated Fair Value of Credit Default Swaps	$ 255	$ 180
Maximum Amount of Future Payments under Credit Default Swaps	$ 13,377	$ 12,645
Weighted Average Years to Maturity	4 years 5 months	4 years 5 months
Aaa/Aa/A
Credit Derivatives [Line Items]
Estimated Fair Value of Credit Default Swaps	$ 60	$ 48
Maximum Amount of Future Payments under Credit Default Swaps	$ 3,270	$ 3,262
Weighted Average Years to Maturity	3 years 1 month	3 years 7 months
Aaa/Aa/A | Single name credit default swaps (3)
Credit Derivatives [Line Items]
Estimated Fair Value of Credit Default Swaps	$ 8	$ 6
Maximum Amount of Future Payments under Credit Default Swaps	$ 470	$ 494
Weighted Average Years to Maturity	2 years 7 months	3 years
Aaa/Aa/A | Credit default swaps referencing indices
Credit Derivatives [Line Items]
Estimated Fair Value of Credit Default Swaps	$ 52	$ 42
Maximum Amount of Future Payments under Credit Default Swaps	$ 2,800	$ 2,768
Weighted Average Years to Maturity	3 years 2 months	3 years 7 months
Baa
Credit Derivatives [Line Items]
Estimated Fair Value of Credit Default Swaps	$ 172	$ 113
Maximum Amount of Future Payments under Credit Default Swaps	$ 9,537	$ 8,877
Weighted Average Years to Maturity	4 years 10 months	4 years 8 months
Baa | Single name credit default swaps (3)
Credit Derivatives [Line Items]
Estimated Fair Value of Credit Default Swaps	$ 9	$ 7
Maximum Amount of Future Payments under Credit Default Swaps	$ 806	$ 931
Weighted Average Years to Maturity	2 years 1 month	2 years 4 months
Baa | Credit default swaps referencing indices
Credit Derivatives [Line Items]
Estimated Fair Value of Credit Default Swaps	$ 163	$ 106
Maximum Amount of Future Payments under Credit Default Swaps	$ 8,731	$ 7,946
Weighted Average Years to Maturity	5 years 1 month	5 years
Ba
Credit Derivatives [Line Items]
Estimated Fair Value of Credit Default Swaps	$ (2)	$ (2)
Maximum Amount of Future Payments under Credit Default Swaps	$ 180	$ 155
Weighted Average Years to Maturity	3 years 8 months	4 years
Ba | Single name credit default swaps (3)
Credit Derivatives [Line Items]
Estimated Fair Value of Credit Default Swaps	$ (2)	$ (2)
Maximum Amount of Future Payments under Credit Default Swaps	$ 180	$ 155
Weighted Average Years to Maturity	3 years 8 months	4 years
Ba | Credit default swaps referencing indices
Credit Derivatives [Line Items]
Estimated Fair Value of Credit Default Swaps	$ 0	$ 0
Maximum Amount of Future Payments under Credit Default Swaps	$ 0	$ 0
Weighted Average Years to Maturity	0 years	0 years
B
Credit Derivatives [Line Items]
Estimated Fair Value of Credit Default Swaps	$ 25	$ 21
Maximum Amount of Future Payments under Credit Default Swaps	$ 390	$ 351
Weighted Average Years to Maturity	4 years 5 months	4 years 4 months
B | Single name credit default swaps (3)
Credit Derivatives [Line Items]
Estimated Fair Value of Credit Default Swaps	$ 2	$ 1
Maximum Amount of Future Payments under Credit Default Swaps	$ 60	$ 70
Weighted Average Years to Maturity	1 year 6 months	1 year 10 months
B | Credit default swaps referencing indices
Credit Derivatives [Line Items]
Estimated Fair Value of Credit Default Swaps	$ 23	$ 20
Maximum Amount of Future Payments under Credit Default Swaps	$ 330	$ 281
Weighted Average Years to Maturity	5 years	5 years

Derivatives (Estimated Fair Val

Derivatives (Estimated Fair Value of Derivative Assets and Liabilities after Master Netting Agreements and Cash Collateral) (Details) - USD ($) $ in Millions	Jun. 30, 2017	Dec. 31, 2016
Offsetting Assets [Line Items]
Gross estimated fair value of derivative assets	$ 12,299	$ 16,010
Gross estimated fair value of derivative liabilities	8,180	10,712
Amounts offset in the consolidated balance sheet, Assets	0	0
Amounts offset in the consolidated balance sheet, Liabilities	0	0
Estimated fair value of derivative assets presented in the consolidated balance sheets	12,299	16,010
Estimated fair value of derivative liabilities presented in the consolidated balance sheets	8,180	10,712
Net amount of derivative assets after application of master netting agreements and cash collateral	103	526
Net amount of derivative liabilities after application of master netting agreements and cash collateral	177	38
Over the Counter [Member]
Offsetting Assets [Line Items]
Gross estimated fair value of derivative assets	11,636	13,387
Gross estimated fair value of derivative liabilities	7,819	8,650
Gross estimated fair value of derivative assets	(5,311)	(6,018)
Gross estimated fair value of derivative liabilities	(5,311)	(6,018)
Cash collateral on derivative assets	(4,369)	(4,897)
Cash collateral on derivative liabilities	(1)	(84)
Securities collateral on derivative assets	(1,889)	(2,069)
Securities collateral on derivative liabilities	(2,334)	(2,516)
Cleared [Member]
Offsetting Assets [Line Items]
Gross estimated fair value of derivative assets	627	2,543
Gross estimated fair value of derivative liabilities	352	2,047
Gross estimated fair value of derivative assets	(70)	(1,068)
Gross estimated fair value of derivative liabilities	(70)	(1,068)
Cash collateral on derivative assets	(555)	(1,427)
Cash collateral on derivative liabilities	(223)	(974)
Securities collateral on derivative assets	0	0
Securities collateral on derivative liabilities	(55)	0
Exchange-traded
Offsetting Assets [Line Items]
Gross estimated fair value of derivative assets	36	80
Gross estimated fair value of derivative liabilities	9	15
Gross estimated fair value of derivative assets	(2)	(5)
Gross estimated fair value of derivative liabilities	(2)	(5)
Cash collateral on derivative assets	0	0
Cash collateral on derivative liabilities	(1)	(9)
Securities collateral on derivative assets	0	0
Securities collateral on derivative liabilities	$ (6)	$ 0

Derivatives (Credit Risk on Fre

Derivatives (Credit Risk on Freestanding Derivatives) (Details) - USD ($) $ in Millions	Jun. 30, 2017	Dec. 31, 2016
Credit Derivatives [Line Items]
Estimated Fair Value of Derivatives in a Net Liability Position (1)	$ 2,508	$ 2,632
Estimated Fair Value Of Incremental Collateral Provided Upon A One Notch Downgrade In The Company's Credit Rating	5	6
Estimated Fair Value Of Incremental Collateral Provided Upon A Downgrade In The Company's Credit Rating to a Level that Triggers Full Overnight Collateralization or Termination of the Derivative Position	5	9
Fixed maturity securities
Credit Derivatives [Line Items]
Estimated Fair Value of Collateral Provided:	2,594	2,773
Cash
Credit Derivatives [Line Items]
Estimated Fair Value of Collateral Provided:	10	91
Derivatives Subject to Credit- Contingent Provisions
Credit Derivatives [Line Items]
Estimated Fair Value of Derivatives in a Net Liability Position (1)	2,483	2,607
Estimated Fair Value Of Incremental Collateral Provided Upon A One Notch Downgrade In The Company's Credit Rating	5	6
Estimated Fair Value Of Incremental Collateral Provided Upon A Downgrade In The Company's Credit Rating to a Level that Triggers Full Overnight Collateralization or Termination of the Derivative Position	5	9
Derivatives Subject to Credit- Contingent Provisions | Fixed maturity securities
Credit Derivatives [Line Items]
Estimated Fair Value of Collateral Provided:	2,572	2,742
Derivatives Subject to Credit- Contingent Provisions | Cash
Credit Derivatives [Line Items]
Estimated Fair Value of Collateral Provided:	10	91
Derivatives Not Subject to Credit- Contingent Provisions
Credit Derivatives [Line Items]
Estimated Fair Value of Derivatives in a Net Liability Position (1)	25	25
Estimated Fair Value Of Incremental Collateral Provided Upon A One Notch Downgrade In The Company's Credit Rating	0	0
Estimated Fair Value Of Incremental Collateral Provided Upon A Downgrade In The Company's Credit Rating to a Level that Triggers Full Overnight Collateralization or Termination of the Derivative Position	0	0
Derivatives Not Subject to Credit- Contingent Provisions | Fixed maturity securities
Credit Derivatives [Line Items]
Estimated Fair Value of Collateral Provided:	22	31
Derivatives Not Subject to Credit- Contingent Provisions | Cash
Credit Derivatives [Line Items]
Estimated Fair Value of Collateral Provided:	$ 0	$ 0

Derivatives (Embedded Derivativ

Derivatives (Embedded Derivatives) (Details) - USD ($) $ in Millions	Jun. 30, 2017	Dec. 31, 2016
Embedded Derivative, Fair Value of Embedded Derivative, Net [Abstract]
Embedded derivatives within asset host contracts	$ 169	$ 243
Embedded derivatives within liability host contracts	3,889	4,105
Ceded guaranteed minimum benefits | Premiums, reinsurance and other receivables
Embedded Derivative, Fair Value of Embedded Derivative, Net [Abstract]
Embedded derivatives within asset host contracts	388	380
Direct guaranteed minimum benefits | Policyholder account balances [Member]
Embedded Derivative, Fair Value of Embedded Derivative, Net [Abstract]
Embedded derivatives within liability host contracts	2,196	2,720
Assumed guaranteed minimum benefits | Policyholder account balances [Member]
Embedded Derivative, Fair Value of Embedded Derivative, Net [Abstract]
Embedded derivatives within liability host contracts	1,280	1,205
Funds withheld on ceded reinsurance | Other liabilities
Embedded Derivative, Fair Value of Embedded Derivative, Net [Abstract]
Embedded derivatives within liability host contracts	6	(30)
Fixed annuities with equity indexed returns | Policyholder account balances [Member]
Embedded Derivative, Fair Value of Embedded Derivative, Net [Abstract]
Embedded derivatives within liability host contracts	407	210
Options embedded in debt or equity securities [Member] | Other
Embedded Derivative, Fair Value of Embedded Derivative, Net [Abstract]
Embedded derivatives within asset host contracts	$ (219)	$ (137)

Derivatives (Changes in Estimat

Derivatives (Changes in Estimated Fair Value Related to Embedded Derivatives) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Derivative Instruments, Gain (Loss) [Line Items]
Net derivatives gains (losses)	$ 69	$ (4,624)	$ 647	$ (5,793)
Net derivative gains (losses)
Derivative Instruments, Gain (Loss) [Line Items]
Net derivatives gains (losses)	69	(4,624)	647	(5,793)
Policyholder benefits and claims
Derivative Instruments, Gain (Loss) [Line Items]
Net derivatives gains (losses)	$ 14	$ 60	$ (1)	$ 105

Derivatives (Narrative) (Detail

Derivatives (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2016
Derivatives, Fair Value [Line Items]
Maximum Amount of Future Payments under Credit Default Swaps	$ 13,377		$ 13,377		$ 12,645
Estimated Fair Value of Credit Default Swaps	255		255		180
Estimated Fair Value Assets	12,178		12,178		15,761
Estimated Fair Value Liabilities	8,217		8,217		10,804
Excess securities collateral received on derivatives	495		495		$ 168
Derivative Instruments, Gain (Loss) [Line Items]
Net derivatives gains (losses)	69	$ (4,624)	647	$ (5,793)
Derivative Instrument Detail [Abstract]
Change in fair value of derivatives excluded from the assessment of hedge effectiveness	(17)	(4)	(24)	(10)
Net amounts reclassified into net derivatives gains (losses) on discontinued cash flow hedges	0	(1)	$ 32	(5)
Hedging exposure to variability in future cash flows for specific length of time			5 years		5 years
Accumulated Other Comprehensive Income Loss	2,500		$ 2,500		$ 2,900
Deferred net gains (losses) expected to be reclassified to earnings			(54)
Amount and Location of Gains (Losses) Reclassified from Accumulated Other Comprehensive Income (Loss) into Income (Loss) (Effective Portion)	$ 0	$ 0	$ 0	$ 0
Immateriality of cash flow effectiveness	0	0	0	0
Cumulative foreign currency translation gain (loss) recorded in accumulated other comprehensive income (loss) for net investment in foreign operations hedges	$ 395		$ 395		754
Potential future recoveries available to offset maximum amount of future payments under credit default swaps	30		30		30
Excess securities collateral provided on derivatives	361		361		486
Securities collateral received which the company is permitted to sell or repledge, amount that has been sold or repledged	0		0
Over the Counter [Member]
Derivatives, Fair Value [Line Items]
Excess securities collateral received on derivatives	(349)		(349)		(217)
Excess securities collateral provided on derivatives	(320)		(320)		(297)
Cash collateral on derivative assets	(4,369)		(4,369)		(4,897)
Exchange-traded
Derivatives, Fair Value [Line Items]
Excess securities collateral received on derivatives	(676)		(676)		(1,200)
Excess securities collateral provided on derivatives	(230)		(230)		(569)
Cash collateral on derivative assets	0		0		0
Nonperformance Risk [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Net derivatives gains (losses)	(138)	$ 1,100	(181)	$ 1,500
Accrued Liabilities [Member]
Derivatives, Fair Value [Line Items]
Estimated Fair Value Assets	121		121		249
Estimated Fair Value Liabilities	$ (37)		$ (37)		$ (92)

Fair Value (Recurring Fair Valu

Fair Value (Recurring Fair Value Measurements) (Details) - USD ($) $ in Millions	Jun. 30, 2017	Dec. 31, 2016
Assets [Abstract]
Available-for-sale Securities, Debt Securities	$ 364,084	$ 350,889
Available-for-sale Securities, Equity Securities	3,415	3,194
Fair Value Option And Trading Securities	14,762	13,923
Short-term investments	7,177	7,810
Mortgage loans at estimated fair value	77,572	74,545
Derivative assets	12,178	15,761
Embedded derivatives within asset host contracts	169	243
Separate account assets	320,455	308,620
Liabilities [Abstract]
Derivative liabilities	8,217	10,804
Embedded derivatives within liability host contracts	3,889	4,105
Separate account liabilities	320,455	308,620
Residential mortgage loans — FVO
Assets [Abstract]
Mortgage loans at estimated fair value	615	566
Consolidated Securitization Entities
Assets [Abstract]
Mortgage loans at estimated fair value	123	136
Recurring
Assets [Abstract]
Available-for-sale Securities, Debt Securities	364,084	350,889
Available-for-sale Securities, Equity Securities	3,415	3,194
Fair Value Option And Trading Securities	14,762	13,923
Short-term investments	6,597	7,291
Mortgage loans at estimated fair value	738	702
Other investments	181	157
Derivative assets	12,178	15,761
Embedded derivatives within asset host contracts	388	380
Separate account assets	320,455	308,620
Total assets	722,798	700,917
Liabilities [Abstract]
Derivative liabilities	8,217	10,804
Embedded derivatives within liability host contracts	3,889	4,105
Total liabilities	12,123	14,932
Recurring | Interest rate contracts
Assets [Abstract]
Derivative assets	7,133	9,713
Liabilities [Abstract]
Derivative liabilities	2,171	4,525
Recurring | Foreign currency exchange rate contracts
Assets [Abstract]
Derivative assets	2,954	4,229
Liabilities [Abstract]
Derivative liabilities	3,029	3,853
Recurring | Credit contracts
Assets [Abstract]
Derivative assets	267	203
Liabilities [Abstract]
Derivative liabilities	46	49
Recurring | Equity market contracts
Assets [Abstract]
Derivative assets	1,824	1,616
Liabilities [Abstract]
Derivative liabilities	2,971	2,377
Recurring | Derivative Liabilities Within Separate Accounts [Member]
Liabilities [Abstract]
Separate account liabilities	17	23
Recurring | Residential mortgage loans — FVO
Assets [Abstract]
Mortgage loans at estimated fair value	615	566
Recurring | Consolidated Securitization Entities
Assets [Abstract]
Mortgage loans at estimated fair value	123	136
Recurring | U.S. corporate
Assets [Abstract]
Available-for-sale Securities, Debt Securities	102,599	100,853
Recurring | U.S. government and agency
Assets [Abstract]
Available-for-sale Securities, Debt Securities	59,879	57,523
Recurring | Foreign government
Assets [Abstract]
Available-for-sale Securities, Debt Securities	61,108	57,138
Recurring | Foreign corporate
Assets [Abstract]
Available-for-sale Securities, Debt Securities	60,474	57,057
Recurring | RMBS
Assets [Abstract]
Available-for-sale Securities, Debt Securities	38,532	36,993
Recurring | State and political subdivision
Assets [Abstract]
Available-for-sale Securities, Debt Securities	16,254	16,176
Recurring | ABS
Assets [Abstract]
Available-for-sale Securities, Debt Securities	14,135	13,877
Recurring | CMBS
Assets [Abstract]
Available-for-sale Securities, Debt Securities	11,103	11,272
Recurring | Level 1
Assets [Abstract]
Available-for-sale Securities, Debt Securities	31,690	31,153
Available-for-sale Securities, Equity Securities	1,640	1,373
Fair Value Option And Trading Securities	12,118	11,123
Short-term investments	3,213	4,808
Mortgage loans at estimated fair value	0	0
Other investments	80	86
Derivative assets	36	80
Embedded derivatives within asset host contracts	0	0
Separate account assets	88,537	83,538
Total assets	137,314	132,161
Liabilities [Abstract]
Derivative liabilities	9	15
Embedded derivatives within liability host contracts	0	0
Total liabilities	9	15
Recurring | Level 1 | Interest rate contracts
Assets [Abstract]
Derivative assets	24	12
Liabilities [Abstract]
Derivative liabilities	2	12
Recurring | Level 1 | Foreign currency exchange rate contracts
Assets [Abstract]
Derivative assets	0	0
Liabilities [Abstract]
Derivative liabilities	4	0
Recurring | Level 1 | Credit contracts
Assets [Abstract]
Derivative assets	0	0
Liabilities [Abstract]
Derivative liabilities	0	0
Recurring | Level 1 | Equity market contracts
Assets [Abstract]
Derivative assets	12	68
Liabilities [Abstract]
Derivative liabilities	3	3
Recurring | Level 1 | Derivative Liabilities Within Separate Accounts [Member]
Liabilities [Abstract]
Separate account liabilities	0	0
Recurring | Level 1 | Residential mortgage loans — FVO
Assets [Abstract]
Mortgage loans at estimated fair value	0	0
Recurring | Level 1 | Consolidated Securitization Entities
Assets [Abstract]
Mortgage loans at estimated fair value	0	0
Recurring | Level 1 | U.S. corporate
Assets [Abstract]
Available-for-sale Securities, Debt Securities	0	0
Recurring | Level 1 | U.S. government and agency
Assets [Abstract]
Available-for-sale Securities, Debt Securities	31,342	31,153
Recurring | Level 1 | Foreign government
Assets [Abstract]
Available-for-sale Securities, Debt Securities	0	0
Recurring | Level 1 | Foreign corporate
Assets [Abstract]
Available-for-sale Securities, Debt Securities	0	0
Recurring | Level 1 | RMBS
Assets [Abstract]
Available-for-sale Securities, Debt Securities	348	0
Recurring | Level 1 | State and political subdivision
Assets [Abstract]
Available-for-sale Securities, Debt Securities	0	0
Recurring | Level 1 | ABS
Assets [Abstract]
Available-for-sale Securities, Debt Securities	0	0
Recurring | Level 1 | CMBS
Assets [Abstract]
Available-for-sale Securities, Debt Securities	0	0
Recurring | Level 2
Assets [Abstract]
Available-for-sale Securities, Debt Securities	311,781	298,627
Available-for-sale Securities, Equity Securities	1,174	1,217
Fair Value Option And Trading Securities	2,332	2,513
Short-term investments	2,471	2,436
Mortgage loans at estimated fair value	123	136
Other investments	101	71
Derivative assets	11,686	15,262
Embedded derivatives within asset host contracts	0	0
Separate account assets	230,947	223,923
Total assets	560,615	544,185
Liabilities [Abstract]
Derivative liabilities	6,684	8,854
Embedded derivatives within liability host contracts	0	0
Total liabilities	6,695	8,870
Recurring | Level 2 | Interest rate contracts
Assets [Abstract]
Derivative assets	7,083	9,699
Liabilities [Abstract]
Derivative liabilities	1,570	3,402
Recurring | Level 2 | Foreign currency exchange rate contracts
Assets [Abstract]
Derivative assets	2,881	4,149
Liabilities [Abstract]
Derivative liabilities	2,973	3,799
Recurring | Level 2 | Credit contracts
Assets [Abstract]
Derivative assets	220	165
Liabilities [Abstract]
Derivative liabilities	46	49
Recurring | Level 2 | Equity market contracts
Assets [Abstract]
Derivative assets	1,502	1,249
Liabilities [Abstract]
Derivative liabilities	2,095	1,604
Recurring | Level 2 | Derivative Liabilities Within Separate Accounts [Member]
Liabilities [Abstract]
Separate account liabilities	11	16
Recurring | Level 2 | Residential mortgage loans — FVO
Assets [Abstract]
Mortgage loans at estimated fair value	0	0
Recurring | Level 2 | Consolidated Securitization Entities
Assets [Abstract]
Mortgage loans at estimated fair value	123	136
Recurring | Level 2 | U.S. corporate
Assets [Abstract]
Available-for-sale Securities, Debt Securities	95,628	93,639
Recurring | Level 2 | U.S. government and agency
Assets [Abstract]
Available-for-sale Securities, Debt Securities	28,537	26,370
Recurring | Level 2 | Foreign government
Assets [Abstract]
Available-for-sale Securities, Debt Securities	60,900	56,848
Recurring | Level 2 | Foreign corporate
Assets [Abstract]
Available-for-sale Securities, Debt Securities	53,457	50,344
Recurring | Level 2 | RMBS
Assets [Abstract]
Available-for-sale Securities, Debt Securities	33,354	31,896
Recurring | Level 2 | State and political subdivision
Assets [Abstract]
Available-for-sale Securities, Debt Securities	16,254	16,149
Recurring | Level 2 | ABS
Assets [Abstract]
Available-for-sale Securities, Debt Securities	13,096	12,624
Recurring | Level 2 | CMBS
Assets [Abstract]
Available-for-sale Securities, Debt Securities	10,555	10,757
Recurring | Level 3
Assets [Abstract]
Available-for-sale Securities, Debt Securities	20,613	21,109
Available-for-sale Securities, Equity Securities	601	604
Fair Value Option And Trading Securities	312	287
Short-term investments	913	47
Mortgage loans at estimated fair value	615	566
Other investments	0	0
Derivative assets	456	419
Embedded derivatives within asset host contracts	388	380
Separate account assets	971	1,159
Total assets	24,869	24,571
Liabilities [Abstract]
Derivative liabilities	1,524	1,935
Embedded derivatives within liability host contracts	3,889	4,105
Total liabilities	5,419	6,047
Recurring | Level 3 | Interest rate contracts
Assets [Abstract]
Derivative assets	26	2
Liabilities [Abstract]
Derivative liabilities	599	1,111
Recurring | Level 3 | Foreign currency exchange rate contracts
Assets [Abstract]
Derivative assets	73	80
Liabilities [Abstract]
Derivative liabilities	52	54
Recurring | Level 3 | Credit contracts
Assets [Abstract]
Derivative assets	47	38
Liabilities [Abstract]
Derivative liabilities	0	0
Recurring | Level 3 | Equity market contracts
Assets [Abstract]
Derivative assets	310	299
Liabilities [Abstract]
Derivative liabilities	873	770
Recurring | Level 3 | Derivative Liabilities Within Separate Accounts [Member]
Liabilities [Abstract]
Separate account liabilities	6	7
Recurring | Level 3 | Residential mortgage loans — FVO
Assets [Abstract]
Mortgage loans at estimated fair value	615	566
Recurring | Level 3 | Consolidated Securitization Entities
Assets [Abstract]
Mortgage loans at estimated fair value	0	0
Recurring | Level 3 | U.S. corporate
Assets [Abstract]
Available-for-sale Securities, Debt Securities	6,971	7,214
Recurring | Level 3 | U.S. government and agency
Assets [Abstract]
Available-for-sale Securities, Debt Securities	0	0
Recurring | Level 3 | Foreign government
Assets [Abstract]
Available-for-sale Securities, Debt Securities	208	290
Recurring | Level 3 | Foreign corporate
Assets [Abstract]
Available-for-sale Securities, Debt Securities	7,017	6,713
Recurring | Level 3 | RMBS
Assets [Abstract]
Available-for-sale Securities, Debt Securities	4,830	5,097
Recurring | Level 3 | State and political subdivision
Assets [Abstract]
Available-for-sale Securities, Debt Securities	0	27
Recurring | Level 3 | ABS
Assets [Abstract]
Available-for-sale Securities, Debt Securities	1,039	1,253
Recurring | Level 3 | CMBS
Assets [Abstract]
Available-for-sale Securities, Debt Securities	$ 548	$ 515

Fair Value (Quantitative Inform

Fair Value (Quantitative Information) (Details) - $ / shares	6 Months Ended	12 Months Ended
	Jun. 30, 2017	Dec. 31, 2016
Interest rate contracts | Minimum | Income Approach Valuation Technique
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Swap yield	2.32%	2.00%
Repurchase Rate	0.00%	(0.44%)
Interest rate contracts | Maximum | Income Approach Valuation Technique
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Swap yield	3.14%	3.00%
Repurchase Rate	0.13%	0.18%
Foreign currency exchange rate contracts | Minimum | Income Approach Valuation Technique
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Swap yield	(0.23%)	0.50%
Foreign currency exchange rate contracts | Maximum | Income Approach Valuation Technique
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Swap yield	3.28%	3.28%
Credit contracts | Minimum | Income Approach Valuation Technique
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Credit spreads	0.96%	0.97%
Credit contracts | Maximum | Income Approach Valuation Technique
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Credit spreads	1.00%	0.98%
Equity market contracts | Minimum | Income Approach Valuation Technique
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Correlation	70.00%	40.00%
Volatility	10.00%	12.00%
Equity market contracts | Maximum | Income Approach Valuation Technique
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Correlation	70.00%	40.00%
Volatility	34.00%	32.00%
Embedded derivatives direct, assumed and ceded guaranteed minimum benefits | Minimum | Income Approach Valuation Technique
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Utilization rates	0.00%	0.00%
Withdrawal rates	0.00%	0.00%
Long-term equity volatilities	8.73%	9.95%
Nonperformance risk spread	0.03%	0.04%
Embedded derivatives direct, assumed and ceded guaranteed minimum benefits | Minimum | Income Approach Valuation Technique | Durations 1 - 10
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Lapse Rate	0.25%	0.25%
Embedded derivatives direct, assumed and ceded guaranteed minimum benefits | Minimum | Income Approach Valuation Technique | Durations 11 - 20
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Lapse Rate	2.00%	2.00%
Embedded derivatives direct, assumed and ceded guaranteed minimum benefits | Minimum | Income Approach Valuation Technique | Durations 21 - 116
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Lapse Rate	1.25%	1.25%
Embedded derivatives direct, assumed and ceded guaranteed minimum benefits | Minimum | Income Approach Valuation Technique | Ages 0 - 40
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Mortality Rate	0.00%	0.00%
Embedded derivatives direct, assumed and ceded guaranteed minimum benefits | Minimum | Income Approach Valuation Technique | Ages 41 - 60
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Mortality Rate	0.01%	0.01%
Embedded derivatives direct, assumed and ceded guaranteed minimum benefits | Minimum | Income Approach Valuation Technique | Ages 61 - 115
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Mortality Rate	0.04%	0.04%
Embedded derivatives direct, assumed and ceded guaranteed minimum benefits | Maximum | Income Approach Valuation Technique
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Utilization rates	25.00%	25.00%
Withdrawal rates	20.00%	20.00%
Long-term equity volatilities	33.00%	33.00%
Nonperformance risk spread	1.42%	1.70%
Embedded derivatives direct, assumed and ceded guaranteed minimum benefits | Maximum | Income Approach Valuation Technique | Durations 1 - 10
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Lapse Rate	100.00%	100.00%
Embedded derivatives direct, assumed and ceded guaranteed minimum benefits | Maximum | Income Approach Valuation Technique | Durations 11 - 20
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Lapse Rate	100.00%	100.00%
Embedded derivatives direct, assumed and ceded guaranteed minimum benefits | Maximum | Income Approach Valuation Technique | Durations 21 - 116
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Lapse Rate	100.00%	100.00%
Embedded derivatives direct, assumed and ceded guaranteed minimum benefits | Maximum | Income Approach Valuation Technique | Ages 0 - 40
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Mortality Rate	0.21%	0.21%
Embedded derivatives direct, assumed and ceded guaranteed minimum benefits | Maximum | Income Approach Valuation Technique | Ages 41 - 60
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Mortality Rate	0.78%	0.78%
Embedded derivatives direct, assumed and ceded guaranteed minimum benefits | Maximum | Income Approach Valuation Technique | Ages 61 - 115
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Mortality Rate	100.00%	100.00%
U.S. corporate and foreign corporate securities | Minimum | Market Approach Valuation Technique
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Delta spread adjustments	0.22%	0.18%
Offered quotes	$ 89	$ 37
Quoted prices	$ 13	$ 6
U.S. corporate and foreign corporate securities | Maximum | Market Approach Valuation Technique
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Delta spread adjustments	1.42%	1.38%
Offered quotes	$ 112	$ 120
Quoted prices	$ 559	$ 700
U.S. corporate and foreign corporate securities | Weighted Average | Market Approach Valuation Technique
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Delta spread adjustments	1.07%	1.05%
Offered quotes	$ 102	$ 99
Quoted prices	117	114
RMBS | Minimum | Market Approach Valuation Technique
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Quoted prices	8	19
RMBS | Maximum | Market Approach Valuation Technique
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Quoted prices	173	137
RMBS | Weighted Average | Market Approach Valuation Technique
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Quoted prices	93	91
ABS | Minimum | Market Approach Valuation Technique
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Offered quotes	99	96
Quoted prices	5	5
ABS | Maximum | Market Approach Valuation Technique
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Offered quotes	103	102
Quoted prices	119	106
ABS | Weighted Average | Market Approach Valuation Technique
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Offered quotes	100	100
Quoted prices	$ 100	$ 99

Fair Value (Unobservable Input

Fair Value (Unobservable Input Reconciliation) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Net Derivatives
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Changes in unrealized gains (losses) included in net income (loss) for the instruments still held at end of period	$ 94	$ 163	$ 102	$ 207
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Balance, beginning of period	(1,287)	(338)	(1,516)	(411)
Total realized/unrealized gains (losses) included in net income (loss)	110	165	126	228
Total realized/unrealized gains (losses) included in AOCI	96	41	135	51
Purchases	4	4	4	12
Sales	0	0	0	0
Issuances	0	(1)	(7)	(1)
Settlements	9	2	190	(9)
Transfers into Level 3	0	0	0	0
Transfers out of Level 3	0	(5)	0	(2)
Balance, end of period	(1,068)	(132)	(1,068)	(132)
Changes in unrealized gains (losses) included in net income (loss) for the instruments still held at end of period	94	163	102	207
Net Embedded Derivatives
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Changes in unrealized gains (losses) included in net income (loss) for the instruments still held at end of period	95	(4,520)	693	(5,634)
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Balance, beginning of period	(3,411)	(1,939)	(3,725)	(544)
Total realized/unrealized gains (losses) included in net income (loss)	116	(4,505)	704	(5,616)
Total realized/unrealized gains (losses) included in AOCI	13	(135)	(47)	(210)
Purchases	0	0	0	0
Sales	0	0	0	0
Issuances	0	0	0	0
Settlements	(219)	(225)	(433)	(434)
Transfers into Level 3	0	0	0	0
Transfers out of Level 3	0	0	0	0
Balance, end of period	(3,501)	(6,804)	(3,501)	(6,804)
Changes in unrealized gains (losses) included in net income (loss) for the instruments still held at end of period	95	(4,520)	693	(5,634)
Residential mortgage loans — FVO
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, beginning of period	639	392	566	314
Total realized/unrealized gains (losses) included in net income (loss)	6	1	3	11
Total realized/unrealized gains (losses) included in AOCI	0	0	0	0
Purchases	42	71	174	149
Sales	(47)	(4)	(79)	(8)
Issuances	0	0	0	0
Settlements	(25)	(11)	(49)	(17)
Transfers into Level 3	0	0	0	0
Transfers out of Level 3	0	0	0	0
Balance, end of period	615	449	615	449
Changes in unrealized gains (losses) included in net income (loss) for the instruments still held at end of period	6	1	3	11
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Changes in unrealized gains (losses) included in net income (loss) for the instruments still held at end of period	6	1	3	11
Corporate fixed maturity securities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, beginning of period	13,371	12,792	13,927	12,796
Total realized/unrealized gains (losses) included in net income (loss)	10	(5)	2	(44)
Total realized/unrealized gains (losses) included in AOCI	239	339	588	929
Purchases	1,694	852	2,612	1,316
Sales	(1,334)	(306)	(1,656)	(602)
Issuances	0	0	0	0
Settlements	0	0	0	0
Transfers into Level 3	257	490	138	639
Transfers out of Level 3	(249)	(452)	(1,623)	(1,324)
Balance, end of period	13,988	13,710	13,988	13,710
Changes in unrealized gains (losses) included in net income (loss) for the instruments still held at end of period	7	(5)	3	(44)
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Changes in unrealized gains (losses) included in net income (loss) for the instruments still held at end of period	7	(5)	3	(44)
U.S. government and agency
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, beginning of period	0	211	0	0
Total realized/unrealized gains (losses) included in net income (loss)	0	0	0	0
Total realized/unrealized gains (losses) included in AOCI	0	7	0	18
Purchases	0	105	0	105
Sales	0	0	0	0
Issuances	0	0	0	0
Settlements	0	0	0	0
Transfers into Level 3	0	0	0	200
Transfers out of Level 3	0	0	0	0
Balance, end of period	0	323	0	323
Changes in unrealized gains (losses) included in net income (loss) for the instruments still held at end of period	0	0	0	0
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Changes in unrealized gains (losses) included in net income (loss) for the instruments still held at end of period	0	0	0	0
Foreign government
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, beginning of period	289	712	290	856
Total realized/unrealized gains (losses) included in net income (loss)	1	4	2	8
Total realized/unrealized gains (losses) included in AOCI	(1)	2	5	(3)
Purchases	5	65	12	79
Sales	(5)	(19)	(87)	(23)
Issuances	0	0	0	0
Settlements	0	0	0	0
Transfers into Level 3	0	103	4	41
Transfers out of Level 3	(81)	(491)	(18)	(582)
Balance, end of period	208	376	208	376
Changes in unrealized gains (losses) included in net income (loss) for the instruments still held at end of period	1	4	2	7
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Changes in unrealized gains (losses) included in net income (loss) for the instruments still held at end of period	1	4	2	7
Structured Securities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, beginning of period	7,293	6,652	6,865	7,116
Total realized/unrealized gains (losses) included in net income (loss)	41	30	75	60
Total realized/unrealized gains (losses) included in AOCI	55	5	117	(9)
Purchases	567	940	803	1,546
Sales	(726)	(478)	(1,140)	(903)
Issuances	0	0	0	0
Settlements	0	0	0	0
Transfers into Level 3	65	12	78	30
Transfers out of Level 3	(878)	(461)	(381)	(1,140)
Balance, end of period	6,417	6,700	6,417	6,700
Changes in unrealized gains (losses) included in net income (loss) for the instruments still held at end of period	39	35	67	63
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Changes in unrealized gains (losses) included in net income (loss) for the instruments still held at end of period	39	35	67	63
State and political subdivision
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, beginning of period	7	36	27	46
Total realized/unrealized gains (losses) included in net income (loss)	0	0	0	0
Total realized/unrealized gains (losses) included in AOCI	0	0	0	0
Purchases	0	17	0	17
Sales	0	0	0	0
Issuances	0	0	0	0
Settlements	0	0	0	0
Transfers into Level 3	0	0	0	0
Transfers out of Level 3	(7)	0	(27)	(10)
Balance, end of period	0	53	0	53
Changes in unrealized gains (losses) included in net income (loss) for the instruments still held at end of period	0	0	0	0
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Changes in unrealized gains (losses) included in net income (loss) for the instruments still held at end of period	0	0	0	0
Equity securities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, beginning of period	622	669	604	432
Total realized/unrealized gains (losses) included in net income (loss)	(4)	0	(14)	(24)
Total realized/unrealized gains (losses) included in AOCI	14	11	38	41
Purchases	5	19	9	23
Sales	(36)	(17)	(36)	(62)
Issuances	0	0	0	0
Settlements	0	0	0	0
Transfers into Level 3	0	2	0	457
Transfers out of Level 3	0	(2)	0	(185)
Balance, end of period	601	682	601	682
Changes in unrealized gains (losses) included in net income (loss) for the instruments still held at end of period	(4)	0	(10)	(26)
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Changes in unrealized gains (losses) included in net income (loss) for the instruments still held at end of period	(4)	0	(10)	(26)
FVO Securities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, beginning of period	335	249	287	270
Total realized/unrealized gains (losses) included in net income (loss)	9	(3)	16	5
Total realized/unrealized gains (losses) included in AOCI	0	0	0	0
Purchases	150	11	207	26
Sales	(109)	(19)	(109)	(26)
Issuances	0	0	0	0
Settlements	0	0	0	0
Transfers into Level 3	3	6	8	23
Transfers out of Level 3	(76)	(13)	(97)	(67)
Balance, end of period	312	231	312	231
Changes in unrealized gains (losses) included in net income (loss) for the instruments still held at end of period	9	(3)	14	5
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Changes in unrealized gains (losses) included in net income (loss) for the instruments still held at end of period	9	(3)	14	5
Short-term Investments
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, beginning of period	780	170	47	291
Total realized/unrealized gains (losses) included in net income (loss)	1	0	1	0
Total realized/unrealized gains (losses) included in AOCI	(1)	5	(1)	8
Purchases	190	115	913	126
Sales	(1)	(6)	(17)	(247)
Issuances	0	0	0	0
Settlements	0	0	0	0
Transfers into Level 3	0	2	0	0
Transfers out of Level 3	(56)	(111)	(30)	(3)
Balance, end of period	913	175	913	175
Changes in unrealized gains (losses) included in net income (loss) for the instruments still held at end of period	1	0	1	0
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Changes in unrealized gains (losses) included in net income (loss) for the instruments still held at end of period	1	0	1	0
Separate Accounts
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, beginning of period	1,199	1,466	1,152	1,704
Total realized/unrealized gains (losses) included in net income (loss)	2	33	(16)	62
Total realized/unrealized gains (losses) included in AOCI	0	0	0	0
Purchases	134	209	171	226
Sales	(86)	(49)	(58)	(234)
Issuances	0	(2)	1	2
Settlements	(16)	5	(50)	(4)
Transfers into Level 3	16	2	14	4
Transfers out of Level 3	(284)	(37)	(249)	(133)
Balance, end of period	965	1,627	965	1,627
Changes in unrealized gains (losses) included in net income (loss) for the instruments still held at end of period	0	0	0	0
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Changes in unrealized gains (losses) included in net income (loss) for the instruments still held at end of period	$ 0	$ 0	$ 0	$ 0

Fair Value (Fair Value Option f

Fair Value (Fair Value Option for Certain Assets and Liabilities) (Details) - USD ($) $ in Millions	Jun. 30, 2017	Dec. 31, 2016
Fair Value, Option, Quantitative Disclosures [Line Items]
Carrying value at estimated fair value	$ 77,572	$ 74,545
Consolidated Securitization Entities
Fair Value, Option, Quantitative Disclosures [Line Items]
Unpaid principal balance	76	88
Difference between estimated fair value and unpaid principal balance	47	48
Carrying value at estimated fair value	123	136
Loans in nonaccrual status	0	0
Fair Value, Option, Loans more than 90 days past due	0	0
Fair Value, Option, Loans in nonaccrual status or more than 90 days past due, or both	0	0
Residential mortgage loans — FVO
Fair Value, Option, Quantitative Disclosures [Line Items]
Unpaid principal balance	872	794
Difference between estimated fair value and unpaid principal balance	(257)	(228)
Carrying value at estimated fair value	615	566
Loans in nonaccrual status	230	214
Fair Value, Option, Loans more than 90 days past due	128	137
Fair Value, Option, Loans in nonaccrual status or more than 90 days past due, or both	$ (158)	$ (150)

Fair Value (Nonrecurring Fair V

Fair Value (Nonrecurring Fair Value Measurements) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Level 3 | Mortgage loans
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying Value After Measurement	$ 12	$ 26	$ 12	$ 26
Level 3 | Other limited partnership interests
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying Value After Measurement	61	62	61	62
Level 3 | Other assets
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying Value After Measurement	0	0	0	0
Nonrecurring | Mortgage loans
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Gains (Losses)	0	(85)	0	(143)
Nonrecurring | Other limited partnership interests
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Gains (Losses)	(12)	(16)	(24)	(36)
Nonrecurring | Other assets
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Gains (Losses)	$ (2)	$ (30)	$ (5)	$ (44)

Fair Value (Financial Instrumen

Fair Value (Financial Instruments Carried at Other Than Fair Value) (Details) - USD ($) $ in Millions	Jun. 30, 2017	Dec. 31, 2016
Assets
Policy loans	$ 11,072	$ 11,028
Liabilities
Collateral financing arrangements	1,235	4,071
Junior subordinated debt securities	3,169	3,169
Separate account liabilities	320,455	308,620
Carrying Value
Assets
Mortgage loans	76,834	73,843
Policy loans	11,072	11,028
Real estate joint ventures	9	17
Other limited partnership interests	323	384
Other invested assets	538	506
Premiums, reinsurance and other receivables	4,614	5,140
Other assets	325	237
Liabilities
Policyholder account balances	127,341	124,475
Long-term debt	19,473	16,459
Collateral financing arrangements	1,235	4,071
Junior subordinated debt securities	3,169	3,169
Other liabilities	3,158	2,028
Separate account liabilities	125,154	119,498
Estimated Fair Value
Assets
Mortgage loans	78,792	75,129
Policy loans	13,142	13,015
Real estate joint ventures	43	69
Other limited partnership interests	314	413
Other invested assets	537	505
Premiums, reinsurance and other receivables	4,725	5,161
Other assets	360	269
Liabilities
Policyholder account balances	131,171	127,833
Long-term debt	21,396	18,016
Collateral financing arrangements	957	3,775
Junior subordinated debt securities	4,329	3,982
Other liabilities	3,159	2,028
Separate account liabilities	125,154	119,498
Estimated Fair Value | Level 1
Assets
Mortgage loans	0	0
Policy loans	0	0
Real estate joint ventures	0	0
Other limited partnership interests	0	0
Other invested assets	149	145
Premiums, reinsurance and other receivables	0	0
Other assets	0	0
Liabilities
Policyholder account balances	0	0
Long-term debt	0	0
Collateral financing arrangements	0	0
Junior subordinated debt securities	0	0
Other liabilities	0	0
Separate account liabilities	0	0
Estimated Fair Value | Level 2
Assets
Mortgage loans	0	0
Policy loans	1,111	1,115
Real estate joint ventures	0	0
Other limited partnership interests	0	0
Other invested assets	0	0
Premiums, reinsurance and other receivables	1,517	1,982
Other assets	245	198
Liabilities
Policyholder account balances	0	0
Long-term debt	21,396	18,016
Collateral financing arrangements	0	0
Junior subordinated debt securities	4,329	3,982
Other liabilities	2,623	1,540
Separate account liabilities	125,154	119,498
Estimated Fair Value | Level 3
Assets
Mortgage loans	78,792	75,129
Policy loans	12,031	11,900
Real estate joint ventures	43	69
Other limited partnership interests	314	413
Other invested assets	388	360
Premiums, reinsurance and other receivables	3,208	3,179
Other assets	115	71
Liabilities
Policyholder account balances	131,171	127,833
Long-term debt	0	0
Collateral financing arrangements	957	3,775
Junior subordinated debt securities	0	0
Other liabilities	536	488
Separate account liabilities	$ 0	$ 0

Fair Value (Recurring Fair Va97

Fair Value (Recurring Fair Value Measurements) (Narrative) (Details) - USD ($) $ in Millions	Jun. 30, 2017	Dec. 31, 2016
Net Embedded Derivatives
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities	$ (219)	$ (137)

Fair Value (Nonrecurring Fair98

Fair Value (Nonrecurring Fair Value Measurements) (Narrative) (Details) - Private Equity And Debt Funds	6 Months Ended
	Jun. 30, 2017
Minimum
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Liquidation period	2 years
Maximum
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Liquidation period	10 years

Junior Subordinated Debt Secu99

Junior Subordinated Debt Securities (Details) - Junior Subordinated Debt Instrument Two [Member] $ in Millions	Feb. 10, 2017USD ($)
Debt Instrument [Line Items]
Debt Instrument, Face Amount	$ 750
Debt Instrument, Interest Rate, Stated Percentage	9.25%

Equity (Preferred Stock) (Detai

Equity (Preferred Stock) (Details) - shares	Jun. 30, 2017	Dec. 31, 2016
Class of Stock [Line Items]
Preferred Stock, Shares Issued	25,500,000	25,500,000
Preferred Stock, Shares Outstanding	25,500,000	25,500,000
Preferred Stock, Shares Authorized	200,000,000	200,000,000
Series A Preferred Stock [Member]
Class of Stock [Line Items]
Preferred Stock, Shares Issued	24,000,000	24,000,000
Preferred Stock, Shares Outstanding	24,000,000	24,000,000
Preferred Stock, Shares Authorized	27,600,000	27,600,000
Series C Preferred Stock
Class of Stock [Line Items]
Preferred Stock, Shares Issued	1,500,000	1,500,000
Preferred Stock, Shares Outstanding	1,500,000	1,500,000
Preferred Stock, Shares Authorized	1,500,000	1,500,000
Series A Junior Preferred Stock
Class of Stock [Line Items]
Preferred Stock, Shares Issued	0	0
Preferred Stock, Shares Outstanding	0	0
Preferred Stock, Shares Authorized	10,000,000	10,000,000
Not Designated Preferred Stock
Class of Stock [Line Items]
Preferred Stock, Shares Issued	0	0
Preferred Stock, Shares Outstanding	0	0
Preferred Stock, Shares Authorized	160,900,000	160,900,000

Equity (Components of Accumulat

Equity (Components of Accumulated Other Comprehensive Income (Loss)) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance, beginning of period	$ 6,396	$ 10,865	$ 5,347	$ 4,771
OCI before reclassifications	3,453	5,288	4,724	14,205
Deferred income tax benefit (expense)	(1,132)	(1,608)	(1,365)	(4,239)
AOCI before reclassifications, net of income tax	8,717	14,545	8,706	14,737
Amounts reclassified from AOCI	(435)	111	(424)	(147)
Deferred income tax benefit (expense)	154	(24)	154	42
Amounts reclassified from AOCI, net of income tax	(281)	87	(270)	(105)
Balance, end of period	8,436	14,632	8,436	14,632
Unrealized Investment Gains (Losses), Net of Related Offsets
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance, beginning of period	11,336	15,446	10,766	10,315
OCI before reclassifications	3,290	4,268	4,023	11,938
Deferred income tax benefit (expense)	(1,132)	(1,388)	(1,416)	(3,937)
AOCI before reclassifications, net of income tax	13,494	18,326	13,373	18,316
Amounts reclassified from AOCI	(47)	(183)	149	(166)
Deferred income tax benefit (expense)	22	61	(53)	54
Amounts reclassified from AOCI, net of income tax	(25)	(122)	96	(112)
Balance, end of period	13,469	18,204	13,469	18,204
Unrealized Gains (Losses) on Derivatives
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance, beginning of period	1,853	1,725	1,865	1,458
OCI before reclassifications	(7)	800	203	1,496
Deferred income tax benefit (expense)	3	(269)	(70)	(468)
AOCI before reclassifications, net of income tax	1,849	2,256	1,998	2,486
Amounts reclassified from AOCI	(429)	243	(658)	(80)
Deferred income tax benefit (expense)	149	(68)	229	25
Amounts reclassified from AOCI, net of income tax	(280)	175	(429)	(55)
Balance, end of period	1,569	2,431	1,569	2,431
Foreign Currency Translation Adjustments
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance, beginning of period	(4,842)	(4,282)	(5,312)	(4,950)
OCI before reclassifications	169	209	517	760
Deferred income tax benefit (expense)	(6)	53	116	170
AOCI before reclassifications, net of income tax	(4,679)	(4,020)	(4,679)	(4,020)
Amounts reclassified from AOCI	0	0	0	0
Deferred income tax benefit (expense)	0	0	0	0
Amounts reclassified from AOCI, net of income tax	0	0	0	0
Balance, end of period	(4,679)	(4,020)	(4,679)	(4,020)
Defined Benefit Plans Adjustment
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance, beginning of period	(1,951)	(2,024)	(1,972)	(2,052)
OCI before reclassifications	1	11	(19)	11
Deferred income tax benefit (expense)	3	(4)	5	(4)
AOCI before reclassifications, net of income tax	(1,947)	(2,017)	(1,986)	(2,045)
Amounts reclassified from AOCI	41	51	85	99
Deferred income tax benefit (expense)	(17)	(17)	(22)	(37)
Amounts reclassified from AOCI, net of income tax	24	34	63	62
Balance, end of period	$ (1,923)	$ (1,983)	$ (1,923)	$ (1,983)

Equity (Reclassifications Out o

Equity (Reclassifications Out of Accumulated Other Comprehensive Income (Loss)) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net investment gains (losses)	$ 104	$ 266	$ 112	$ 281
Net derivative gains (losses)	(437)	(2,099)	(1,363)	(764)
Net investment income	4,959	4,887	10,155	9,446
Other expenses	(4,059)	(3,246)	(7,623)	(7,438)
Income (loss) from continuing operations before provision for income tax	1,002	(100)	1,819	2,822
Provision for income tax expense (benefit)	(115)	214	(103)	(505)
Net income (loss)	887	114	1,716	2,317
Reclassification out of Accumulated Other Comprehensive Income
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net income (loss)	281	(87)	270	105
Reclassification out of Accumulated Other Comprehensive Income | Unrealized Investment Gains (Losses), Net of Related Offsets
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net investment gains (losses)	46	158	38	125
Net derivative gains (losses)	5	9	(190)	22
Net investment income	(4)	16	3	19
Income (loss) from continuing operations before provision for income tax	47	183	(149)	166
Provision for income tax expense (benefit)	(22)	(61)	53	(54)
Net income (loss)	25	122	(96)	112
Reclassification out of Accumulated Other Comprehensive Income | Unrealized Gains (Losses) on Derivatives
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Income (loss) from continuing operations before provision for income tax	429	(243)	658	80
Provision for income tax expense (benefit)	(149)	68	(229)	(25)
Net income (loss)	280	(175)	429	55
Reclassification out of Accumulated Other Comprehensive Income | Unrealized Gains (Losses) on Derivatives | Interest rate swaps
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net derivative gains (losses)	6	18	14	28
Net investment income	4	4	9	7
Reclassification out of Accumulated Other Comprehensive Income | Unrealized Gains (Losses) on Derivatives | Interest rate forwards
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net derivative gains (losses)	2	(1)	(2)	1
Net investment income	2	2	3	3
Other expenses	1	1	1	1
Reclassification out of Accumulated Other Comprehensive Income | Unrealized Gains (Losses) on Derivatives | Foreign currency swaps
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net derivative gains (losses)	414	(269)	632	37
Net investment income	(1)	(1)	(1)	(1)
Other expenses	0	0	1	1
Reclassification out of Accumulated Other Comprehensive Income | Unrealized Gains (Losses) on Derivatives | Credit forwards
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net derivative gains (losses)	1	3	1	3
Reclassification out of Accumulated Other Comprehensive Income | Defined Benefit Plans Adjustment
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Amortization of net actuarial gains (losses)	(48)	(52)	(97)	(103)
Amortization of prior service (costs) credit	7	1	12	4
Income (loss) from continuing operations before provision for income tax	(41)	(51)	(85)	(99)
Provision for income tax expense (benefit)	17	17	22	37
Net income (loss)	$ (24)	$ (34)	$ (63)	$ (62)

Equity (Common Stock - Narrativ

Equity (Common Stock - Narrative) (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Equity [Abstract]
Treasury Stock, Shares, Acquired	34,354,967	1,445,864
Treasury Stock, Value, Acquired, Cost Method	$ 1,810	$ 70
Stock Repurchase Program, Remaining Authorized Repurchase Amount	$ 888

Equity (Stock-Based Compensatio

Equity (Stock-Based Compensation Plans - Narrative) (Details) - shares	3 Months Ended	12 Months Ended
	Mar. 31, 2017	Dec. 31, 2016	Jun. 30, 2017
Minimum
Equity - Stock-based Compensation Plans [Line Items]
Future Performance Factor			0.00%
Maximum
Equity - Stock-based Compensation Plans [Line Items]
Future Performance Factor			175.00%
Performance Shares
Equity - Stock-based Compensation Plans [Line Items]
Performance Factor		44.40%
Vested in period		1,066,076
Issued in period	473,338
Performance Units
Equity - Stock-based Compensation Plans [Line Items]
Vested in period		165,587
Paid in period	73,521

Other Expenses (Other Expenses)

Other Expenses (Other Expenses) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Other Expenses
Compensation	$ 1,134	$ 1,189	$ 2,323	$ 2,499
Pension, postretirement and postemployment benefit costs	78	103	158	243
Commissions	1,025	1,094	2,035	2,228
Volume-related costs	203	214	401	480
Capitalization of DAC	(821)	(915)	(1,617)	(1,896)
Amortization of DAC and VOBA	704	121	1,237	1,116
Professional services	431	398	818	728
Amortization of negative VOBA	(38)	(67)	(81)	(166)
Interest expense on debt	295	306	591	618
Premium taxes, licenses and fees	167	189	355	404
Rent and related expenses, net of sublease income	71	98	152	195
Other General and Administrative Expense	810	516	1,251	989
Total other expenses	4,059	3,246	7,623	7,438
Spinoff [Member]
Other Expenses
Total other expenses	$ 330	$ 55	$ 407	$ 58

Other Expenses (Restructuring C

Other Expenses (Restructuring Charges) (Details) - Other Expense [Member] - Severance - Unit Cost Initiative [Member] $ in Millions	3 Months Ended	6 Months Ended
	Jun. 30, 2017USD ($)	Jun. 30, 2017USD ($)
Restructuring Cost and Reserve [Line Items]
Balance, beginning of period	$ 38	$ 35
Restructuring charges	11	22
Cash payments	(32)	(40)
Balance, end of period	17	17
Total restructuring charges incurred since inception of initiative	$ 57	$ 57

Employee Benefit Plans (Net Per

Employee Benefit Plans (Net Periodic Benefit Costs) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Pension Benefits
Net periodic benefit costs [Abstract]
Service costs	$ 61	$ 73	$ 122	$ 145
Interest costs	109	109	217	220
Curtailment costs	0	0	0	0
Expected return on plan assets	(130)	(127)	(262)	(254)
Amortization of net actuarial (gains) losses	48	50	97	99
Amortization of prior service costs (credit)	(1)	0	(1)	0
Net periodic benefit costs	87	105	173	210
Other Postretirement Benefits
Net periodic benefit costs [Abstract]
Service costs	2	2	3	4
Interest costs	20	21	39	42
Curtailment costs	0	(3)	0	27
Expected return on plan assets	(18)	(19)	(36)	(37)
Amortization of net actuarial (gains) losses	0	2	0	4
Amortization of prior service costs (credit)	(6)	(1)	(11)	(4)
Net periodic benefit costs	$ (2)	$ 2	$ (5)	$ 36

Earnings Per Common Share (Earn

Earnings Per Common Share (Earnings Per Common Share) (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Weighted Average Shares:
Weighted average common stock outstanding for basic earnings per common share	1,074	1,100.3	1,082.1	1,100.6
Incremental common shares from assumed:
Incremental common shares from assumed exercise or issuance of stock-based awards	8.1	8.8	8.3	8.3
Weighted average common stock outstanding for diluted earnings per common share	1,082.1	1,109.1	1,090.4	1,108.9
Net Income (Loss):
Net income (loss)	$ 887	$ 114	$ 1,716	$ 2,317
Less: Net income (loss) attributable to noncontrolling interests	3	4	6	6
Less: Preferred stock dividends	46	46	52	52
Net income (loss) available to MetLife, Inc.’s common shareholders	$ 838	$ 64	$ 1,658	$ 2,259
Basic	$ 0.78	$ 0.06	$ 1.53	$ 2.05
Diluted	$ 0.77	$ 0.06	$ 1.52	$ 2.04

Contingencies, Commitments a109

Contingencies, Commitments and Guarantees (Contingencies - Narrative) (Details) $ in Thousands	May 02, 2017USD ($)	Nov. 30, 2016USD ($)	Aug. 31, 2016USD ($)	Jun. 30, 2017USD ($)Claims	Jun. 30, 2016Claims	Dec. 31, 2016Claims
Minimum
Loss Contingencies
Loss Contingency, Range of Possible Loss, Portion Not Accrued				$ 0
Maximum
Loss Contingencies
Loss Contingency, Range of Possible Loss, Portion Not Accrued				$ 400,000
Asbestos Related Claims
Loss Contingencies
Asbestos-Related Claims | Claims				1,896	2,348	4,146
Superfund Site Settlement Agreements
Loss Contingencies
Number of regulatory matters and other claims | Claims				2
Maximum estimate of costs for environmental testing				$ 100
Superfund Site Settlement Agreements | Minimum
Loss Contingencies
Damages Sought				1,000
Superfund Site Settlement Agreements | Maximum
Loss Contingencies
Maximum estimate of aggregate costs to resolve matter				1,000
Hartshorne V. MetLife Inc., et al. | Compensatory Damages
Loss Contingencies
Damages Sought				$ 200
Hartshorne V. MetLife Inc., et al. | Punitive Damages
Loss Contingencies
Damages Sought		$ 7,000	$ 15,000
Hartshorne V. MetLife Inc., et al. | Attorney's fees and costs
Loss Contingencies
Damages Sought	$ 6,500

Contingencies, Commitments a110

Contingencies, Commitments and Guarantees (Commitments and Guarantees - Narrative) (Details) - USD ($) $ in Millions	Jun. 30, 2017	Dec. 31, 2016
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Liabilities for indemnities, guarantees and commitments	$ 8	$ 10
Cumulative maximum indemnities and guarantees contractual limitation	938
Minimum
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Indemnities and guarantees contractual limitation range	1
Maximum
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Indemnities and guarantees contractual limitation range	329
Commitments to Fund Partnership Investments, Bank Credit Facilities, Bridge Loans and Private Corporate Bond Investments
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Fair Value Disclosure, Off-balance Sheet Risks, Face Amount, Liability	8,600	8,200
Mortgage Loan Commitments
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Fair Value Disclosure, Off-balance Sheet Risks, Face Amount, Liability	$ 4,000	$ 4,300

Subsequent Event (Details)

Subsequent Event (Details) - USD ($) $ / shares in Units, $ in Millions	1 Months Ended	3 Months Ended			6 Months Ended
	Jul. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2016
Subsequent Event [Line Items]
Treasury Stock, Shares, Acquired					34,354,967	1,445,864
Treasury Stock, Value, Acquired, Cost Method					$ 1,810	$ 70
Secured Debt			$ 1,235		1,235		$ 4,071
Other			$ 810	$ 516	$ 1,251	$ 989
Subsequent Event [Member]
Subsequent Event [Line Items]
Treasury Stock, Shares, Acquired	892,524
Treasury Stock, Value, Acquired, Cost Method	$ 49
Approved dividend, amount per share		$ 0.40
Estimated aggregate dividend payment		$ 426