MetLife (MET) 10-Q 4 Nov 19 2019 Q3 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	9 Months Ended
	Sep. 30, 2019	Oct. 31, 2019
Entity Information [Line Items]
Document Type	10-Q
Entity Registrant Name	MetLife, Inc.
Document Quarterly Report	true
Document Period End Date	Sep. 30, 2019
Document Transition Report	false
Entity File Number	001-15787
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	13-4075851
Entity Address, Address Line One	200 Park Avenue,
Entity Address, City or Town	New York,
Entity Address, State or Province	NY
Entity Address, Postal Zip Code	10166-0188
City Area Code	212
Local Phone Number	578-9500
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Central Index Key	0001099219
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		919,631,257
Amendment Flag	false
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	Q3
Current Fiscal Year End Date	--12-31
Common Stock
Entity Information [Line Items]
Title of 12(b) Security	Common Stock, par value $0.01
Trading Symbol	MET
Security Exchange Name	NYSE
Series A [Member]
Entity Information [Line Items]
Title of 12(b) Security	Floating Rate Non-Cumulative Preferred Stock, Series A, par value $0.01
Trading Symbol	MET PRA
Security Exchange Name	NYSE
Depositary Shares each representing a 1/1000th interest in a share of 5.625% Non-Cumulative Preferred Stock, Series E
Entity Information [Line Items]
Title of 12(b) Security	Depositary Shares each representing a 1/1000th interest in a share of 5.625% Non-Cumulative Preferred Stock, Series E
Trading Symbol	MET PRE
Security Exchange Name	NYSE

Consolidated Balance Sheets (Un

Consolidated Balance Sheets (Unaudited) - USD ($) $ in Millions	Sep. 30, 2019	Dec. 31, 2018
Investments:
Fixed maturity securities available-for-sale, at estimated fair value (amortized cost: $293,130 and $286,816, respectively)	$ 326,049	$ 298,265
Equity securities, at estimated fair value	1,341	1,440
Contractholder-directed equity securities and fair value option securities, at estimated fair value (includes $3 and $4, respectively, relating to variable interest entities)	12,671	12,616
Mortgage loans (net of valuation allowances of $350 and $342, respectively; includes $218 and $299, respectively, under the fair value option)	78,959	75,752
Policy loans	9,671	9,699
Real estate and real estate joint ventures (includes $250 and $0, respectively, of real estate held-for-sale)	10,246	9,698
Other limited partnership interests	7,441	6,613
Short-term investments, principally at estimated fair value	3,536	3,937
Other invested assets (includes $2,352 and $2,300, respectively, of leveraged and direct financing leases and $258 and $141, respectively, relating to variable interest entities)	21,979	18,190
Total investments	471,893	436,210
Cash and cash equivalents, principally at estimated fair value (includes $15 and $52, respectively, relating to variable interest entities)	19,452	15,821
Accrued investment income	3,561	3,582
Premiums, reinsurance and other receivables (includes $5 and $3, respectively, relating to variable interest entities)	20,723	19,644
Deferred policy acquisition costs and value of business acquired	17,382	18,895
Goodwill	9,278	9,422
Other assets (includes $2 and $2, respectively, relating to variable interest entities)	10,166	8,408
Separate account assets	190,357	175,556
Total assets	742,812	687,538
Liabilities
Future policy benefits	193,310	186,780
Policyholder account balances	189,060	183,693
Other policy-related balances	16,960	16,529
Policyholder dividends payable	692	677
Policyholder dividend obligation	2,370	428
Payables for collateral under securities loaned and other transactions	28,443	24,794
Short-term debt	142	268
Long-term debt (includes $5 and $5, respectively, at estimated fair value, relating to variable interest entities)	13,443	12,829
Collateral financing arrangement	1,013	1,060
Junior subordinated debt securities	3,149	3,147
Current income tax payable	31	441
Deferred income tax liability	10,153	5,414
Other liabilities (includes $1 and $1, respectively, relating to variable interest entities)	25,070	22,964
Separate account liabilities	190,357	175,556
Total liabilities	674,193	634,580
Contingencies, Commitments and Guarantees (Note 16)
MetLife, Inc.’s stockholders’ equity:
Preferred stock, par value $0.01 per share; $3,405 aggregate liquidation preference	0	0
Common stock, par value $0.01 per share; 3,000,000,000 shares authorized; 1,176,847,734 and 1,171,824,242 shares issued, respectively; 919,601,779 and 958,613,542 shares outstanding, respectively	12	12
Additional paid-in capital	32,639	32,474
Retained earnings	32,948	28,926
Treasury stock, at cost; 257,245,955 and 213,210,700 shares, respectively	(12,428)	(10,393)
Accumulated other comprehensive income (loss)	15,197	1,722
Total MetLife, Inc.’s stockholders’ equity	68,368	52,741
Noncontrolling interests	251	217
Total equity	68,619	52,958
Total liabilities and equity	$ 742,812	$ 687,538

Consolidated Balance Sheets (_2

Consolidated Balance Sheets (Unaudited) (Parenthetical) - USD ($) $ in Millions	Sep. 30, 2019	Dec. 31, 2018
Assets
Amortized cost of fixed maturity securities available-for-sale	$ 293,130	$ 286,816
Contractholder-directed equity securities and fair value option securities relating to variable interest entities	12,671	12,616
Mortgage loans valuation allowances	350	342
Mortgage Loans on Real Estate, Commercial and Consumer, Net	78,959	75,752
Real estate held-for-sale	250	0
Other Invested Assets - Leveraged and Direct Financing Leases	2,352	2,300
Other invested assets relating to variable interest entities	21,979	18,190
Cash and cash equivalents relating to variable interest entities	19,452	15,821
Premiums, reinsurance and other receivables relating to variable interest entities	20,723	19,644
Other assets relating to variable interest entities	10,166	8,408
Liabilities
Long-term debt, at estimated fair value, relating to variable interest entities	13,443	12,829
Other liabilities relating to variable interest entities	$ 25,070	$ 22,964
MetLife, Inc.’s stockholders’ equity:
Preferred stock, par value	$ 0.01	$ 0.01
Preferred stock, aggregate liquidation preference	$ 3,405	$ 3,405
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	3,000,000,000	3,000,000,000
Common stock, shares issued	1,176,847,734	1,171,824,242
Common stock, shares outstanding	919,601,779	958,613,542
Treasury stock, shares	257,245,955	213,210,700
Residential mortgage loans - FVO
Assets
Mortgage Loans on Real Estate, Commercial and Consumer, Net	$ 218	$ 299
Variable interest entities
Assets
Contractholder-directed equity securities and fair value option securities relating to variable interest entities	3	4
Other invested assets relating to variable interest entities	258	141
Cash and cash equivalents relating to variable interest entities	15	52
Premiums, reinsurance and other receivables relating to variable interest entities	5	3
Other assets relating to variable interest entities	2	2
Liabilities
Long-term debt, at estimated fair value, relating to variable interest entities	5	5
Other liabilities relating to variable interest entities	$ 1	$ 1

Consolidated Statements of Oper

Consolidated Statements of Operations and Comprehensive Income (Unaudited) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Revenues
Premiums	$ 10,781	$ 10,242	$ 30,315	$ 34,573
Universal life and investment-type product policy fees	1,440	1,343	4,217	4,105
Net investment income	4,623	4,486	14,224	12,704
Other revenues	419	479	1,391	1,428
Net investment gains (losses)	161	117	237	(443)
Net derivative gains (losses)	1,254	(378)	2,093	(88)
Total revenues	18,678	16,289	52,477	52,279
Expenses
Policyholder benefits and claims	10,648	10,080	29,713	33,664
Interest credited to policyholder account balances	1,500	1,334	4,976	3,527
Policyholder dividends	296	327	898	933
Other expenses	3,443	3,469	10,058	10,319
Total expenses	15,887	15,210	45,645	48,443
Income (loss) before provision for income tax	2,791	1,079	6,832	3,836
Provision for income tax expense (benefit)	601	164	1,511	770
Net income (loss)	2,190	915	5,321	3,066
Less: Net income (loss) attributable to noncontrolling interests	6	3	15	10
Net income (loss) attributable to MetLife, Inc.	2,184	912	5,306	3,056
Less: Preferred stock dividends	32	32	121	84
Net income (loss) available to MetLife, Inc.’s common shareholders	2,152	880	5,185	2,972
Comprehensive income (loss)	5,759	(940)	18,780	(4,273)
Less: Comprehensive income (loss) attributable to noncontrolling interests, net of income tax	9	2	20	10
Comprehensive income (loss) attributable to MetLife, Inc.	$ 5,750	$ (942)	$ 18,760	$ (4,283)
Net income (loss) available to MetLife, Inc.’s common shareholders per common share:
Basic	$ 2.31	$ 0.89	$ 5.49	$ 2.93
Diluted	$ 2.30	$ 0.88	$ 5.45	$ 2.91

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
Cumulative effects of changes in accounting principles, net of income tax (Note 1)	$ 7				$ (905)		$ 912	$ 7
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest, Adjusted Balance	58,877	$ 0	$ 12	$ 31,111	25,622	$ (6,401)	8,339	58,683	$ 194
Beginning Balance at Dec. 31, 2017	58,870	0	12	31,111	26,527	(6,401)	7,427	58,676	194
Preferred stock issuance	1,274			1,274				1,274
Treasury stock acquired in connection with share repurchases	(2,156)					(2,156)		(2,156)
Stock-based compensation	69			69				69
Dividends on preferred stock	(52)				(52)			(52)
Dividends on common stock	(844)				(844)			(844)
Change in equity of noncontrolling interests	(3)							0	(3)
Net income (loss)	2,151				2,144			2,144	7
Other comprehensive income (loss), net of income tax	(5,484)						(5,485)	(5,485)	1
Ending Balance at Jun. 30, 2018	53,832	0	12	32,454	26,870	(8,557)	2,854	53,633	199
Beginning Balance at Dec. 31, 2017	58,870	0	12	31,111	26,527	(6,401)	7,427	58,676	194
Preferred stock issuance	1,274
Treasury stock acquired in connection with share repurchases	(2,800)
Dividends on preferred stock	(84)
Net income (loss)	3,066
Ending Balance at Sep. 30, 2018	51,809	0	12	32,475	27,331	(9,193)	1,000	51,625	184
Beginning Balance at Jun. 30, 2018	53,832	0	12	32,454	26,870	(8,557)	2,854	53,633	199
Preferred stock issuance	0			0				0
Treasury stock acquired in connection with share repurchases	(636)					(636)		(636)
Stock-based compensation	21			21				21
Dividends on preferred stock	(32)				(32)			(32)
Dividends on common stock	(419)				(419)			(419)
Change in equity of noncontrolling interests	(17)							0	(17)
Net income (loss)	915				912			912	3
Other comprehensive income (loss), net of income tax	(1,855)						(1,854)	(1,854)	(1)
Ending Balance at Sep. 30, 2018	51,809	0	12	32,475	27,331	(9,193)	1,000	51,625	184
Cumulative effects of changes in accounting principles, net of income tax (Note 1)	95				74		21	95
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest, Adjusted Balance	53,053	0	12	32,474	29,000	(10,393)	1,743	52,836	217
Beginning Balance at Dec. 31, 2018	52,958	0	12	32,474	28,926	(10,393)	1,722	52,741	217
Treasury stock acquired in connection with share repurchases	(1,250)					(1,250)		(1,250)
Stock-based compensation	128			128				128
Dividends on preferred stock	(89)				(89)			(89)
Dividends on common stock	(824)				(824)			(824)
Change in equity of noncontrolling interests	7							0	7
Net income (loss)	3,131				3,122			3,122	9
Other comprehensive income (loss), net of income tax	9,890						9,888	9,888	2
Ending Balance at Jun. 30, 2019	64,046	0	12	32,602	31,209	(11,643)	11,631	63,811	235
Beginning Balance at Dec. 31, 2018	52,958	0	12	32,474	28,926	(10,393)	1,722	52,741	217
Preferred stock issuance	0
Treasury stock acquired in connection with share repurchases	(2,000)
Dividends on preferred stock	(121)
Net income (loss)	5,321
Ending Balance at Sep. 30, 2019	68,619	0	12	32,639	32,948	(12,428)	15,197	68,368	251
Beginning Balance at Jun. 30, 2019	64,046	0	12	32,602	31,209	(11,643)	11,631	63,811	235
Treasury stock acquired in connection with share repurchases	(785)					(785)		(785)
Stock-based compensation	37			37				37
Dividends on preferred stock	(32)				(32)			(32)
Dividends on common stock	(413)				(413)			(413)
Change in equity of noncontrolling interests	7							0	7
Net income (loss)	2,190				2,184			2,184	6
Other comprehensive income (loss), net of income tax	3,569						3,566	3,566	3
Ending Balance at Sep. 30, 2019	$ 68,619	$ 0	$ 12	$ 32,639	$ 32,948	$ (12,428)	$ 15,197	$ 68,368	$ 251

Consolidated Statements of Cash

Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Statement of Cash Flows [Abstract]
Net cash provided by (used in) operating activities	$ 8,605	$ 10,437
Cash flows from investing activities
Sales, maturities and repayments of fixed maturity securities available-for-sale	57,024	78,227
Sales, maturities and repayments of equity securities	220	323
Sales, maturities and repayments of mortgage loans	7,935	6,878
Sales, maturities and repayments of real estate and real estate joint ventures	552	561
Sales, maturities and repayments of other limited partnership interests	548	514
Purchases of fixed maturity securities available-for-sale	(62,803)	(84,014)
Purchases of equity securities	(89)	(118)
Purchases of mortgage loans	(11,417)	(10,624)
Purchases of real estate and real estate joint ventures	(1,097)	(912)
Purchases of other limited partnership interests	(1,166)	(1,047)
Cash received in connection with freestanding derivatives	2,977	3,130
Cash paid in connection with freestanding derivatives	(3,294)	(3,745)
Net change in policy loans	6	(62)
Net change in short-term investments	481	(301)
Net change in other invested assets	(241)	174
Other, net	(129)	24
Net cash provided by (used in) investing activities	(10,493)	(10,992)
Cash flows from financing activities
Policyholder account balances: Deposits	69,645	72,037
Policyholder account balances: Withdrawals	(64,655)	(67,869)
Net change in payables for collateral under securities loaned and other transactions	3,703	644
Cash received for other transactions with tenors greater than three months	125	75
Cash paid for other transactions with tenors greater than three months	(200)	0
Long-term debt issued	1,382	24
Long-term debt repaid	(901)	(1,311)
Collateral financing arrangement repaid	(47)	(48)
Financing element on certain derivative instruments and other derivative related transactions, net	18	(15)
Treasury stock acquired in connection with share repurchases	(2,035)	(2,792)
Preferred stock issued, net of issuance costs	0	1,274
Dividends on preferred stock	(121)	(84)
Dividends on common stock	(1,237)	(1,263)
Other, net	(100)	(141)
Net cash provided by (used in) financing activities	5,577	531
Effect of change in foreign currency exchange rates on cash and cash equivalents balances	(58)	(187)
Change in cash and cash equivalents	3,631	(211)
Cash and cash equivalents, beginning of period	15,821	12,701
Cash and cash equivalents, end of period	19,452	12,490
Supplemental disclosures of cash flow information
Net cash paid for Interest	647	809
Net cash paid (received) for Income tax	842	695
Non-cash transactions:
Fixed maturity securities available-for-sale received in connection with pension risk transfer transactions	410	3,016
Reduction of long-term debt	0	944
Reduction of fair value option securities	0	1,030
Reclassification of certain equity securities to other invested assets	$ 0	$ 791

Business, Basis of Presentation

Business, Basis of Presentation and Summary of Significant Accounting Policies	9 Months Ended
	Sep. 30, 2019
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 one of the world’s leading financial services companies, providing insurance, annuities, employee benefits and asset management. MetLife is organized into five segments: U.S.; Asia; Latin America; Europe, the Middle East and Africa (“EMEA”); and MetLife Holdings. 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. 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, 2018 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, 2018 (the “2018 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 2018 Annual Report. 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 real estate joint ventures and other limited partnership interests (“investee”) 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 in net investment income 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. Reclassifications Recent Accounting Pronouncements Changes to GAAP are established by the Financial Accounting Standards Board (“FASB”) in the form of accounting standards updates (“ASUs”) to the FASB Accounting Standards Codification. The Company considers the applicability and impact of all ASUs. The following tables provide a description of new ASUs issued by the FASB and the impact of the adoption on the Company’s consolidated financial statements. Adoption of New Accounting Pronouncements Except as noted below, the ASUs adopted by the Company effective January 1, 2019 did not have a material impact on its consolidated financial statements. Standard Description Effective Date and Method of Adoption Impact on Financial Statements ASU 2017-12, Derivatives and Hedging (Topic 815): Targeted Improvements to Accounting for Hedging Activities, as clarified and amended by ASU 2019-04, Codification Improvements to Topic 326, Financial Instruments—Credit Losses, Topic 815, Derivatives and Hedging, and Topic 825, Financial Instruments The new guidance simplifies the application of hedge accounting in certain situations and amends the hedge accounting model to enable entities to better portray the economics of their risk management activities in their financial statements. January 1, 2019. The Company adopted using a modified retrospective approach. The adoption of the guidance resulted in an $18 million, net of income tax, increase to accumulated other comprehensive income (loss) (“AOCI”) with a corresponding decrease to retained earnings due to the reclassification of hedge ineffectiveness for cash flow hedging relationships existing as of January 1, 2019. The Company has included the expanded disclosures within Note 7. ASU 2016-02, Leases (Topic 842), as clarified and amended by ASU 2018-10, Codification Improvements to Topic 842, Leases, ASU 2018-11 , Leases (Topic 842): Targeted Improvements, and ASU 2018-20 , Leases (Topic 842): Narrow-Scope Improvements for Lessors The new guidance requires a lessee to recognize assets and liabilities for leases with lease terms of more than 12 months. Leases are classified as finance or operating leases and both types of leases are recognized on the balance sheet. Lessor accounting remains largely unchanged from previous guidance except for certain targeted changes. The new guidance also requires new qualitative and quantitative disclosures. In July 2018, two amendments to the new guidance were issued. The amendments provide the option to adopt the new guidance prospectively without adjusting comparative periods. Also, the amendments provide lessors with a practical expedient not to separate lease and non-lease components for certain operating leases. In December 2018, an amendment was issued to clarify lessor accounting relating to taxes, certain lessor’s costs and variable payments related to both lease and non-lease components. January 1, 2019. The Company adopted using a modified retrospective approach. The Company elected the package of practical expedients allowed under the transition guidance. This allowed the Company to carry forward its historical lease classification. In addition, the Company elected all other practical expedients that were allowed under the new guidance and were applicable, including the practical expedient to combine lease and non-lease components into one lease component for certain real estate leases. The adoption of this guidance resulted in the recording of additional net right-of-use (“ROU”) assets and lease liabilities of approximately $1.5 billion and $1.7 billion, respectively, as of January 1, 2019. The reduction of the ROU assets was a result of adjustments for prepaid/deferred rent, unamortized initial direct costs and impairment of certain ROU assets based on the net present value of the remaining minimum lease payments and sublease revenues. In addition, retained earnings increased by $95 million, net of income tax, as a result of the recognition of deferred gains on previous sale leaseback transactions. The guidance did not have a material impact on the Company’s consolidated net income and cash flows. The Company has included expanded disclosures on the consolidated balance sheets and in Notes 6 and 9. Future Adoption of New Accounting Pronouncements ASUs not listed below were assessed and either determined to be not applicable or are not expected to have a material impact on the Company’s consolidated financial statements. ASUs issued but not yet adopted as of September 30, 2019 that are currently being assessed and may or may not have a material impact on the Company’s consolidated financial statements are summarized in the table below. Standard Description Effective Date and Method of Adoption Impact on Financial Statements ASU 2018-15, Intangibles—Goodwill and Other—Internal-Use Software (Subtopic 350-40): Customer’s Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That Is a Service Contract The new guidance requires a customer in a cloud computing arrangement that is a service contract to follow the internal-use software guidance to determine which implementation costs to capitalize as an asset and which costs to expense as incurred. Implementation costs that are capitalized under the new guidance are required to be amortized over the term of the hosting arrangement, beginning when the module or component of the hosting arrangement is ready for its intended use. January 1, 2020. The new guidance can be applied either prospectively to eligible costs incurred on or after the guidance is first applied, or retrospectively to all periods presented. The new guidance will not have a material impact on the Company’s consolidated financial statements and will be adopted prospectively. ASU 2018-14, Compensation—Retirement Benefits—Defined Benefit Plans—General (Subtopic 715-20): Disclosure Framework—Changes to the Disclosure Requirements for Defined Benefit Plans The new guidance removes certain disclosures that no longer are considered cost beneficial, clarifies the specific requirements of disclosures, and adds disclosure requirements identified as relevant for employers that sponsor defined benefit pension or other postretirement plans. December 31, 2020, to be applied on a retrospective basis to all periods presented (with early adoption permitted). The new guidance will not have a material impact on the Company’s consolidated financial statements. ASU 2018-13, Fair Value Measurement (Topic 820): Disclosure Framework—Changes to the Disclosure Requirements for Fair Value Measurement The new guidance modifies the disclosure requirements on fair value by removing some requirements, modifying others, adding changes in unrealized gains and losses included in other comprehensive income (loss) (“OCI”) for recurring Level 3 fair value measurements, and under certain circumstances, providing the option to disclose certain other quantitative information with respect to significant unobservable inputs in lieu of a weighted average. January 1, 2020. Amendments related to changes in unrealized gains and losses, the range and weighted average of significant unobservable inputs used to develop Level 3 fair value measurements, and the narrative description of measurement uncertainty should be applied prospectively. All other amendments should be applied retrospectively. As of December 31, 2018, the Company early adopted the provisions of the guidance that removed the requirements relating to transfers between fair value hierarchy levels and certain disclosures about valuation processes for Level 3 fair value measurements. The Company will adopt the remainder of the new guidance at the effective date. The new guidance will not have a material impact on the Company’s consolidated financial statements. ASU 2018-12, Financial Services—Insurance (Topic 944): Targeted Improvements to the Accounting for Long-Duration Contracts The new guidance (i) prescribes the discount rate to be used in measuring the liability for future policy benefits for traditional and limited payment long-duration contracts, and requires assumptions for those liability valuations to be updated after contract inception, (ii) requires more market-based product guarantees on certain separate account and other account balance long-duration contracts to be accounted for at fair value, (iii) simplifies the amortization of deferred policy acquisition costs (“DAC”) for virtually all long-duration contracts, and (iv) introduces certain financial statement presentation requirements, as well as significant additional quantitative and qualitative disclosures. January 1, 2021, to be applied retrospectively to January 1, 2019 (with early adoption permitted). The Company has started its implementation efforts and is currently evaluating the impact of the new guidance. Given the nature and extent of the required changes to a significant portion of the Company’s operations, the adoption of this guidance is expected to have a material impact on its consolidated financial statements. Standard Description Effective Date and Method of Adoption Impact on Financial Statements ASU 2017-04, Intangibles—Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment 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. January 1, 2020, to 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 will reduce the complexity involved with the evaluation of goodwill for impairment. The impact of the new guidance will depend on the outcomes of future goodwill impairment tests. ASU 2016-13, Financial Instruments—Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments, as clarified and amended by ASU 2018-19 , Codification Improvements to Topic 326, Financial Instruments—Credit Losses, ASU 2019-04, Codification Improvements to Topic 326, Financial Instruments—Credit Losses, Topic 815, Derivatives and Hedging, and Topic 825, Financial Instruments and ASU 2019-05 , Financial Instruments—Credit Losses (Topic 326): Targeted Transition Relief This new guidance requires an allowance for credit losses based on the expectation of lifetime credit losses on financing receivables carried at amortized cost, including, but not limited to, mortgage loans, premium receivables, reinsurance receivables and certain leases. The current model for other-than-temporary impairment (“OTTI”) on available-for-sale (“AFS”) debt securities has been modified and requires the recording of an allowance for credit losses rather than a reduction of the carrying value. Any improvements in expected future cash flows will no longer be reflected as a prospective yield adjustment, but rather as a reduction in the allowance. The new guidance also replaces the model for purchased credit impaired debt securities and financing receivables and requires the establishment of an allowance for credit losses at acquisition, which is added to the purchase price to establish the initial amortized cost. The new guidance also requires enhanced disclosures. January 1, 2020, to be applied on a modified retrospective basis, which requires transition adjustments to be recorded as a cumulative effect adjustment to retained earnings. The Company is finalizing the development of the credit loss models for its financing receivables carried at amortized cost. The development of these credit loss models has resulted in data input validations, enhanced policies and controls and continued updates to information systems. The Company has begun testing these models and information systems and expects to complete testing in the fourth quarter of 2019. At September 30, 2019, the allowance for credit losses was approximately 0.50% of the amortized cost of financing receivables in scope. The Company estimates that if the new guidance was effective at September 30, 2019, the allowance for credit losses would have been less than 1.00% of the amortized cost of financing receivables in scope. The increase in the allowance for credit losses primarily relates to the Company’s residential mortgage loan portfolio. The Company continues to evaluate the transition requirements for purchased credit impaired debt securities. Additionally, the Company is in the process of preparing the required disclosures.

Segment Information

Segment Information	9 Months Ended
	Sep. 30, 2019
Segment Reporting [Abstract]
Segment Information	2. Segment Information MetLife is organized into five segments: U.S.; Asia; Latin America; EMEA; and MetLife Holdings. In addition, the Company reports certain of its results of operations in Corporate & Other. 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 (“RIS”) and Property & Casualty. • The Group Benefits business offers life, dental, group short- and long-term disability, individual disability, accidental death and dismemberment, vision and accident & health coverages, as well as prepaid legal plans. This business also sells administrative services-only arrangements to some employers. • The RIS business offers a broad range of life and annuity-based insurance and investment products, including stable value and pension risk transfer products, institutional income annuities, tort settlements, and capital markets investment products, as well as solutions for funding postretirement benefits and company-, bank- or trust-owned life insurance. • 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 to 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 to other institutions, and their respective employees, which include whole and term life, endowments, universal and variable life, accident & health insurance and fixed and variable annuities. Latin America The Latin America segment offers a broad range of products to both individuals and corporations, as well as to other institutions, and their respective employees, which include life insurance, retirement and savings products, accident & health insurance and credit insurance. EMEA The EMEA segment offers a broad range of products to both individuals and corporations, as well as to other institutions, and their respective employees, which include life insurance, accident & health insurance, retirement and savings products and credit insurance. MetLife Holdings The MetLife Holdings segment consists of operations relating to products and businesses, previously included in MetLife’s former retail business, that the Company no longer actively markets in the United States, such as variable, universal, term and whole life insurance, variable, fixed and index-linked annuities, and long-term care insurance, as well as the assumed variable annuity guarantees from the Company’s former operating joint venture in Japan. 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 and developing businesses (including the investment management business through which the Company, as a manager of assets such as global fixed income and real estate, provides differentiated investment solutions to institutional investors worldwide). Additionally, Corporate & Other includes run-off businesses. 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, investment expenses and intersegment loans, which bear interest rates commensurate with related borrowings. Financial Measures and Segment Accounting Policies Adjusted earnings is used by management to evaluate performance and allocate resources. Consistent with GAAP guidance for segment reporting, adjusted earnings is also the Company’s GAAP measure of segment performance and is reported below. Adjusted earnings should not be viewed as a substitute for net income (loss). The Company believes the presentation of adjusted 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. Adjusted earnings is defined as adjusted revenues less adjusted expenses, net of income tax. The financial measures of adjusted revenues and adjusted 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 certain entities required to be consolidated under GAAP. Also, these measures exclude results of discontinued operations under GAAP and other businesses that have been or will be sold or exited by MetLife but do not meet the discontinued operations criteria under GAAP and are referred to as divested businesses. Divested businesses also includes the net impact of transactions with exited businesses that have been eliminated in consolidation under GAAP and costs relating to businesses that have been or will be sold or exited by MetLife that do not meet the criteria to be included in results of discontinued operations under GAAP. Adjusted revenues also excludes net investment gains (losses) and net derivative gains (losses). Adjusted expenses also excludes goodwill impairments. The following additional adjustments are made to revenues, in the line items indicated, in calculating adjusted 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”); • Net investment income: (i) includes adjustments for 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 adjusted earnings adjustments relating to insurance joint ventures accounted for under the equity method, (iii) excludes certain amounts related to contractholder-directed equity securities, (iv) excludes certain amounts related to securitization entities that are VIEs consolidated under GAAP and (v) includes distributions of profits from certain other limited partnership interests that were previously accounted for under the cost method, but are now accounted for at estimated fair value, where the change in estimated fair value is recognized in net investment gains (losses) under GAAP; and • Other revenues is adjusted for settlements of foreign currency earnings hedges and excludes fees received in association with services provided under transition service agreements (“TSA fees”). The following additional adjustments are made to expenses, in the line items indicated, in calculating adjusted expenses: • Policyholder benefits and claims and policyholder dividends excludes: (i) amortization of basis adjustments associated with de-designated fair value hedges of future policy benefits, (ii) changes in the policyholder dividend obligation related to net investment gains (losses) and net derivative gains (losses), (iii) 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, (iv) benefits and hedging costs related to GMIBs (“GMIB costs”) and (v) 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 certain amounts related to net investment income earned on contractholder-directed equity securities; • Amortization of 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: (i) noncontrolling interests, (ii) implementation of new insurance regulatory requirement costs and (iii) acquisition, integration and other costs. Other expenses includes TSA fees. Adjusted 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 nine months ended September 30, 2019 and 2018 . The segment accounting policies are the same as those used to prepare the Company’s consolidated financial statements, except for adjusted earnings adjustments as defined above. In addition, segment accounting policies include the method of capital allocation described below. 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 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 adjusted earnings. 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. Three Months Ended September 30, 2019 U.S. Asia Latin EMEA MetLife Corporate Total Adjustments Total Consolidated (In millions) Revenues Premiums $ 6,903 $ 1,654 $ 703 $ 526 $ 925 $ 35 $ 10,746 $ 35 $ 10,781 Universal life and investment-type product policy fees 264 430 256 117 284 1 1,352 88 1,440 Net investment income 1,760 915 295 73 1,316 114 4,473 150 4,623 Other revenues 224 14 8 13 52 36 347 72 419 Net investment gains (losses) — — — — — — — 161 161 Net derivative gains (losses) — — — — — — — 1,254 1,254 Total revenues 9,151 3,013 1,262 729 2,577 186 16,918 1,760 18,678 Expenses Policyholder benefits and claims and policyholder dividends 6,759 1,264 656 291 1,856 32 10,858 86 10,944 Interest credited to policyholder account balances 507 440 74 25 228 — 1,274 226 1,500 Capitalization of DAC (131 ) (498 ) (102 ) (128 ) (9 ) (3 ) (871 ) (11 ) (882 ) Amortization of DAC and VOBA 121 353 58 128 94 2 756 41 797 Amortization of negative VOBA — (2 ) — (2 ) — — (4 ) — (4 ) Interest expense on debt 3 — — — 2 218 223 — 223 Other expenses 1,004 955 356 341 223 320 3,199 110 3,309 Total expenses 8,263 2,512 1,042 655 2,394 569 15,435 452 15,887 Provision for income tax expense (benefit) 181 152 65 21 34 (192 ) 261 340 601 Adjusted earnings $ 707 $ 349 $ 155 $ 53 $ 149 $ (191 ) 1,222 Adjustments to: Total revenues 1,760 Total expenses (452 ) Provision for income tax (expense) benefit (340 ) Net income (loss) $ 2,190 $ 2,190 Three Months Ended September 30, 2018 U.S. Asia Latin EMEA MetLife Corporate Total Adjustments Total Consolidated (In millions) Revenues Premiums $ 6,431 $ 1,689 $ 692 $ 514 $ 949 $ (33 ) $ 10,242 $ — $ 10,242 Universal life and investment-type product policy fees 252 428 229 105 286 — 1,300 43 1,343 Net investment income 1,787 830 339 73 1,375 58 4,462 24 4,486 Other revenues 206 12 7 15 70 86 396 83 479 Net investment gains (losses) — — — — — — — 117 117 Net derivative gains (losses) — — — — — — — (378 ) (378 ) Total revenues 8,676 2,959 1,267 707 2,680 111 16,400 (111 ) 16,289 Expenses Policyholder benefits and claims and policyholder dividends 6,219 1,354 670 281 1,766 (38 ) 10,252 155 10,407 Interest credited to policyholder account balances 457 381 102 24 238 — 1,202 132 1,334 Capitalization of DAC (116 ) (478 ) (97 ) (109 ) (8 ) (2 ) (810 ) — (810 ) Amortization of DAC and VOBA 128 366 5 110 13 2 624 108 732 Amortization of negative VOBA — (4 ) (1 ) (2 ) — — (7 ) — (7 ) Interest expense on debt 2 — 2 — 2 246 252 15 267 Other expenses 982 943 351 333 264 314 3,187 100 3,287 Total expenses 7,672 2,562 1,032 637 2,275 522 14,700 510 15,210 Provision for income tax expense (benefit) 209 131 65 15 78 (206 ) 292 (128 ) 164 Adjusted earnings $ 795 $ 266 $ 170 $ 55 $ 327 $ (205 ) 1,408 Adjustments to: Total revenues (111 ) Total expenses (510 ) Provision for income tax (expense) benefit 128 Net income (loss) $ 915 $ 915 Nine Months Ended September 30, 2019 U.S. Asia Latin EMEA MetLife Holdings Corporate & Other Total Adjustments Total (In millions) Revenues Premiums $ 18,704 $ 4,984 $ 2,122 $ 1,619 $ 2,776 $ 75 $ 30,280 $ 35 $ 30,315 Universal life and investment-type product policy fees 808 1,255 820 325 844 2 4,054 163 4,217 Net investment income 5,274 2,739 951 220 3,941 183 13,308 916 14,224 Other revenues 668 43 31 40 184 212 1,178 213 1,391 Net investment gains (losses) — — — — — — — 237 237 Net derivative gains (losses) — — — — — — — 2,093 2,093 Total revenues 25,454 9,021 3,924 2,204 7,745 472 48,820 3,657 52,477 Expenses Policyholder benefits and claims and policyholder dividends 18,233 3,862 2,043 867 5,207 70 30,282 329 30,611 Interest credited to policyholder account balances 1,512 1,267 254 72 681 — 3,786 1,190 4,976 Capitalization of DAC (372 ) (1,449 ) (296 ) (371 ) (23 ) (9 ) (2,520 ) (11 ) (2,531 ) Amortization of DAC and VOBA 352 972 215 327 237 5 2,108 2 2,110 Amortization of negative VOBA — (18 ) — (6 ) — — (24 ) — (24 ) Interest expense on debt 8 — 2 — 6 715 731 — 731 Other expenses 3,006 2,865 1,074 1,029 687 831 9,492 280 9,772 Total expenses 22,739 7,499 3,292 1,918 6,795 1,612 43,855 1,790 45,645 Provision for income tax expense (benefit) 552 458 184 70 185 (538 ) 911 600 1,511 Adjusted earnings $ 2,163 $ 1,064 $ 448 $ 216 $ 765 $ (602 ) 4,054 Adjustments to: Total revenues 3,657 Total expenses (1,790 ) Provision for income tax (expense) benefit (600 ) Net income (loss) $ 5,321 $ 5,321 Nine Months Ended September 30, 2018 U.S. Asia Latin America EMEA MetLife Holdings Corporate & Other Total Adjustments Total (In millions) Revenues Premiums $ 22,950 $ 5,091 $ 2,079 $ 1,611 $ 2,856 $ (14 ) $ 34,573 $ — $ 34,573 Universal life and investment-type product policy fees 772 1,221 786 324 901 — 4,004 101 4,105 Net investment income 5,168 2,464 942 221 4,056 157 13,008 (304 ) 12,704 Other revenues 613 40 24 51 205 246 1,179 249 1,428 Net investment gains (losses) — — — — — — — (443 ) (443 ) Net derivative gains (losses) — — — — — — — (88 ) (88 ) Total revenues 29,503 8,816 3,831 2,207 8,018 389 52,764 (485 ) 52,279 Expenses Policyholder benefits and claims and policyholder dividends 22,590 3,934 1,976 861 5,022 (38 ) 34,345 252 34,597 Interest credited to policyholder account balances 1,303 1,094 295 75 709 — 3,476 51 3,527 Capitalization of DAC (336 ) (1,438 ) (282 ) (348 ) (28 ) (7 ) (2,439 ) (1 ) (2,440 ) Amortization of DAC and VOBA 357 993 136 324 214 5 2,029 103 2,132 Amortization of negative VOBA — (31 ) (1 ) (12 ) — — (44 ) (1 ) (45 ) Interest expense on debt 8 — 5 — 6 798 817 45 862 Other expenses 2,908 2,871 1,052 1,023 815 805 9,474 336 9,810 Total expenses 26,830 7,423 3,181 1,923 6,738 1,563 47,658 785 48,443 Provision for income tax expense (benefit) 554 437 195 62 248 (599 ) 897 (127 ) 770 Adjusted earnings $ 2,119 $ 956 $ 455 $ 222 $ 1,032 $ (575 ) 4,209 Adjustments to: Total revenues (485 ) Total expenses (785 ) Provision for income tax (expense) benefit 127 Net income (loss) $ 3,066 $ 3,066 The following table presents total assets with respect to the Company’s segments, as well as Corporate & Other, at: September 30, 2019 December 31, 2018 (In millions) U.S. $ 267,428 $ 248,174 Asia 160,798 146,278 Latin America 75,640 70,417 EMEA 26,418 27,829 MetLife Holdings 176,410 166,872 Corporate & Other 36,118 27,968 Total $ 742,812 $ 687,538 Revenues derived from any customer did not exceed 10% of consolidated premiums, universal life and investment-type product policy fees and other revenues for the three months and nine months ended September 30, 2019 . Revenues derived from one U.S. segment customer were $6.0 billion for the nine months ended September 30, 2018 , which represented 15% of consolidated premiums, universal life and investment-type product policy fees and other revenues. The revenue was from a single premium received for a pension risk transfer. Revenues derived from any other customer did not exceed 10% of consolidated premiums, universal life and investment-type product policy fees and other revenues for the three months and nine months ended September 30, 2018 .

Pending Disposition

Pending Disposition	9 Months Ended
	Sep. 30, 2019
Discontinued Operations and Disposal Groups [Abstract]
Mergers, Acquisitions and Dispositions Disclosures [Text Block]	3. Pending Disposition In June 2019, the Company entered into a definitive agreement to sell its two wholly-owned subsidiaries, MetLife Limited and Metropolitan Life Insurance Company of Hong Kong Limited (collectively, “MetLife Hong Kong”). As a result of the agreement, a loss of $140 million , net of income tax, was recorded for the nine months ended September 30, 2019 . This loss is comprised of an expected $100 million pre-tax loss, which is reflected in net investment gains (losses) and includes allocated goodwill of $75 million . Additionally, the $140 million loss includes a $40 million net tax charge, which was recorded in the provision for income tax expense (benefit) and includes previously deferred tax items and losses which are not recognized for tax purposes. At September 30, 2019 , MetLife Hong Kong reported $2.9 billion of total assets in the Asia segment. MetLife Hong Kong’s results of operations are included in continuing operations. For the three months ended September 30, 2019 , Hong Kong’s results of operations were no longer reported in the Asia segment adjusted earnings. See Note 2 for information on divested businesses. The transaction is expected to close in 2020 and is subject to regulatory approvals and satisfaction of other closing conditions.

Insurance

Insurance	9 Months Ended
	Sep. 30, 2019
Insurance [Abstract]
Insurance	4. Insurance Guarantees As discussed in Notes 1 and 4 of the Notes to the Consolidated Financial Statements included in the 2018 Annual Report, the Company issues directly and assumes through reinsurance variable annuity products with guaranteed minimum benefits. Guaranteed minimum accumulation benefits (“GMABs”), the non-life contingent portion of guaranteed minimum withdrawal benefits (“GMWBs”) and certain non-life contingent portions of GMIBs 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: September 30, 2019 December 31, 2018 In the At In the At (Dollars in millions) Annuity Contracts: Variable Annuity Guarantees: Total account value (1), (2), (3) $ 63,613 $ 23,703 $ 63,381 $ 23,174 Separate account value (1) $ 40,373 $ 21,940 $ 38,888 $ 21,385 Net amount at risk (2) $ 1,744 (4 ) $ 658 (5 ) $ 3,197 (4 ) $ 511 (5 ) Average attained age of contractholders 67 years 65 years 66 years 64 years Other Annuity Guarantees: Total account value (1), (3) N/A $ 5,616 N/A $ 5,787 Net amount at risk N/A $ 402 (6 ) N/A $ 549 (6 ) Average attained age of contractholders N/A 51 years N/A 50 years September 30, 2019 December 31, 2018 Secondary Paid-Up Secondary Paid-Up (Dollars in millions) Universal and Variable Life Contracts: Total account value (1), (3) $ 11,512 $ 2,970 $ 11,205 $ 3,070 Net amount at risk (7) $ 86,696 $ 14,743 $ 93,028 $ 15,539 Average attained age of policyholders 53 years 64 years 52 years 64 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 interim condensed consolidated balance sheets, from assumed variable annuity guarantees 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. (8) The Company’s guarantee exposure amounts at December 31, 2018 as reported in the 2018 Annual Report have been revised. They conform to the 2019 presentation, which includes certain contracts with guarantees that were previously excluded. They include the following increases from the amounts reported in the 2018 Annual Report: (i) variable annuity guarantees in the event of death: $7.1 billion from $56.2 billion for total account value, $1.5 billion from $37.3 billion for separate account value and $429 million from $2.8 billion for net amount at risk; (ii) variable annuity guarantees at annuitization: $1.5 billion from $21.6 billion for total account value, $1.5 billion from $19.8 billion for separate account value and $28 million from $483 million for net amount at risk; (iii) other annuity guarantees: $4.5 billion from $1.3 billion for total account value and $60 million from $489 million for net amount at risk; and (iv) universal and variable life contract secondary guarantees: $2.3 billion from $8.9 billion for total account value and $28.9 billion from $64.2 billion for net amount at risk. Additionally, the average attained age of contractholders at annuitization for variable annuity guarantees decreased by one year from 65 years and the average attained age of policyholders with universal and variable life contract secondary guarantees decreased by five years from 57 years. 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: Nine Months 2019 2018 (In millions) Balance, beginning of period $ 17,788 $ 17,094 Less: Reinsurance recoverables 2,332 2,198 Net balance, beginning of period 15,456 14,896 Incurred related to: Current period 20,236 18,386 Prior periods (1) 146 256 Total incurred 20,382 18,642 Paid related to: Current period (14,203 ) (13,033 ) Prior periods (4,960 ) (4,896 ) Total paid (19,163 ) (17,929 ) Net balance, end of period 16,675 15,609 Add: Reinsurance recoverables 2,392 2,189 Balance, end of period (included in future policy benefits and other policy-related balances) $ 19,067 $ 17,798 __________________ (1) For both the nine months ended September 30, 2019 and 2018 , claims and claim adjustment expenses associated with prior periods increased due to events incurred in prior periods but reported in the current period.

Closed Block

Closed Block	9 Months Ended
	Sep. 30, 2019
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: September 30, 2019 December 31, 2018 (In millions) Closed Block Liabilities Future policy benefits $ 39,477 $ 40,032 Other policy-related balances 438 317 Policyholder dividends payable 453 431 Policyholder dividend obligation 2,370 428 Deferred income tax liability 61 28 Other liabilities 116 328 Total closed block liabilities 42,915 41,564 Assets Designated to the Closed Block Investments: Fixed maturity securities available-for-sale, at estimated fair value 26,365 25,354 Equity securities, at estimated fair value 63 61 Contractholder-directed equity securities and fair value option securities, at estimated fair value 50 43 Mortgage loans 6,910 6,778 Policy loans 4,493 4,527 Real estate and real estate joint ventures 540 544 Other invested assets 822 643 Total investments 39,243 37,950 Cash and cash equivalents 154 — Accrued investment income 438 443 Premiums, reinsurance and other receivables 66 83 Current income tax recoverable 81 69 Total assets designated to the closed block 39,982 38,545 Excess of closed block liabilities over assets designated to the closed block 2,933 3,019 Amounts included in AOCI: Unrealized investment gains (losses), net of income tax 2,596 1,089 Unrealized gains (losses) on derivatives, net of income tax 169 86 Allocated to policyholder dividend obligation, net of income tax (1,872 ) (338 ) Total amounts included in AOCI 893 837 Maximum future earnings to be recognized from closed block assets and liabilities $ 3,826 $ 3,856 Information regarding the closed block policyholder dividend obligation was as follows: Nine Months Year (In millions) Balance, beginning of period $ 428 $ 2,121 Change in unrealized investment and derivative gains (losses) 1,942 (1,693 ) Balance, end of period $ 2,370 $ 428 Information regarding the closed block revenues and expenses was as follows: Three Months Nine Months 2019 2018 2019 2018 (In millions) Revenues Premiums $ 396 $ 405 $ 1,153 $ 1,202 Net investment income 428 443 1,303 1,318 Net investment gains (losses) 3 7 (2 ) (46 ) Net derivative gains (losses) 11 2 23 12 Total revenues 838 857 2,477 2,486 Expenses Policyholder benefits and claims 564 641 1,666 1,808 Policyholder dividends 229 241 688 723 Other expenses 27 29 84 88 Total expenses 820 911 2,438 2,619 Revenues, net of expenses before provision for income tax expense (benefit) 18 (54 ) 39 (133 ) Provision for income tax expense (benefit) 3 (12 ) 7 (29 ) Revenues, net of expenses and provision for income tax expense (benefit) $ 15 $ (42 ) $ 32 $ (104 ) 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	9 Months Ended
	Sep. 30, 2019
Investments, Debt and Equity Securities [Abstract]
Investments	6. Investments Fixed Maturity Securities Available-for-Sale Fixed Maturity Securities Available-for-Sale by Sector The following table presents the fixed maturity securities AFS by sector. U.S. corporate and foreign corporate sectors include redeemable preferred stock. Residential mortgage-backed securities (“RMBS”) includes Agency, prime, alternative and sub-prime mortgage-backed securities. Asset-backed securities (“ABS”) includes securities collateralized by corporate loans and consumer loans. Municipals includes taxable and tax-exempt revenue bonds and, to a much lesser extent, general obligations of states, municipalities and political subdivisions. Commercial mortgage-backed securities (“CMBS”) primarily includes securities collateralized by multiple properties. RMBS, ABS and CMBS are collectively, “Structured Securities.” September 30, 2019 December 31, 2018 Amortized Gross Unrealized Estimated Amortized Gross Unrealized Estimated Temporary OTTI Temporary OTTI (In millions) U.S. corporate $ 78,243 $ 9,194 $ 323 $ — $ 87,114 $ 77,761 $ 3,467 $ 2,280 $ — $ 78,948 Foreign government 58,318 9,663 434 — 67,547 56,353 6,406 471 — 62,288 Foreign corporate 58,699 5,523 1,122 — 63,100 56,290 2,438 2,025 — 56,703 U.S. government and agency 34,963 5,853 14 — 40,802 37,030 2,756 464 — 39,322 RMBS 27,889 1,728 63 (37 ) 29,591 27,409 920 394 (26 ) 27,961 ABS 14,319 111 85 — 14,345 12,552 74 153 1 12,472 Municipals 10,600 2,348 6 — 12,942 10,376 1,228 71 — 11,533 CMBS 10,099 544 35 — 10,608 9,045 115 122 — 9,038 Total fixed maturity securities AFS $ 293,130 $ 34,964 $ 2,082 $ (37 ) $ 326,049 $ 286,816 $ 17,404 $ 5,980 $ (25 ) $ 298,265 __________________ (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 AFS with an estimated fair value of $35 million and $15 million , and unrealized gains (losses) of $1 million and ($1) million at September 30, 2019 and December 31, 2018 , respectively. Maturities of Fixed Maturity Securities AFS The amortized cost and estimated fair value of fixed maturity securities AFS, by contractual maturity date, were as follows at September 30, 2019 : Due in One Due After Due After Five Years Through Ten Years Due After Ten Years Structured Securities Total Fixed Maturity Securities AFS (In millions) Amortized cost $ 17,217 $ 48,060 $ 58,619 $ 116,927 $ 52,307 $ 293,130 Estimated fair value $ 17,280 $ 50,027 $ 63,869 $ 140,329 $ 54,544 $ 326,049 Actual maturities may differ from contractual maturities due to the exercise of call or prepayment options. Fixed maturity securities AFS 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 Securities AFS by Sector The following table presents the estimated fair value and gross unrealized losses of fixed maturity securities AFS in an unrealized loss position by sector and aggregated by length of time that the securities have been in a continuous unrealized loss position at: September 30, 2019 December 31, 2018 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) U.S. corporate $ 3,320 $ 110 $ 2,361 $ 213 $ 32,430 $ 1,663 $ 5,826 $ 617 Foreign government 2,504 314 1,312 120 4,392 243 2,902 228 Foreign corporate 4,079 199 7,398 923 19,564 1,230 5,765 795 U.S. government and agency 1,860 11 149 3 6,813 58 8,937 406 RMBS 1,912 11 813 15 6,506 120 6,423 248 ABS 4,949 39 3,083 46 8,230 138 392 16 Municipals 205 3 31 3 1,380 46 349 25 CMBS 1,138 5 438 30 3,893 67 707 55 Total fixed maturity securities AFS $ 19,967 $ 692 $ 15,585 $ 1,353 $ 83,208 $ 3,565 $ 31,301 $ 2,390 Total number of securities in an unrealized loss position 1,869 1,414 6,913 2,335 Evaluation of Fixed Maturity Securities AFS for OTTI and Evaluating Temporarily Impaired Fixed Maturity Securities AFS As described more fully in Notes 1 and 8 of the Notes to the Consolidated Financial Statements included in the 2018 Annual Report, the Company performs a regular evaluation of all investment classes for impairment, including fixed maturity securities AFS 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 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 September 30, 2019 . Future OTTI will depend primarily on economic fundamentals, issuer performance (including changes in the present value of future cash flows expected to be collected), and changes in credit ratings, collateral valuation and foreign currency exchange rates. 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 AFS decreased $3.9 billion for the nine months ended September 30, 2019 to $2.0 billion . The decrease in gross unrealized losses for the nine months ended September 30, 2019 was primarily attributable to decreases in interest rates, narrowing credit spreads and to a lesser extent, the impact of weakening foreign currencies on certain foreign currency denominated fixed maturity securities AFS. At September 30, 2019 , $176 million of the total $2.0 billion of gross unrealized losses were from 51 fixed maturity securities AFS with an unrealized loss position of 20% or more of amortized cost for six months or greater. Investment Grade Fixed Maturity Securities AFS Of the $176 million of gross unrealized losses on fixed maturity securities AFS with an unrealized loss of 20% or more of amortized cost for six months or greater, $101 million , or 57% , were related to gross unrealized losses on 17 investment grade fixed maturity securities AFS. Unrealized losses on investment grade fixed maturity securities AFS are principally related to widening credit spreads since purchase and, with respect to fixed-rate fixed maturity securities AFS, rising interest rates since purchase. Below Investment Grade Fixed Maturity Securities AFS Of the $176 million of gross unrealized losses on fixed maturity securities AFS with an unrealized loss of 20% or more of amortized cost for six months or greater, $75 million , or 43% , were related to gross unrealized losses on 34 below investment grade fixed maturity securities AFS. Unrealized losses on below investment grade fixed maturity securities AFS are principally related to U.S. and foreign corporate securities (primarily industrial and financial institutions) and foreign government securities and are the result of significantly wider credit spreads resulting from higher risk premiums since purchase, largely due to economic and market uncertainty. Management evaluates U.S. corporate and foreign corporate securities based on factors such as expected cash flows, financial condition and near-term and long-term prospects of the issuers. Management evaluates foreign government securities based on factors impacting the issuers such as expected cash flows and financial condition of the issuers and any country-specific economic conditions or public sector programs. Equity Securities Equity securities are summarized as follows at: September 30, 2019 December 31, 2018 Estimated Fair Value % of Total Estimated Fair Value % of Total (Dollars in millions) Common stock $ 938 69.9 % $ 1,037 72.0 % Non-redeemable preferred stock 403 30.1 403 28.0 Total equity securities $ 1,341 100.0 % $ 1,440 100.0 % Contractholder-Directed Equity Securities and Fair Value Option Securities As described more fully in Note 1 of the Notes to the Consolidated Financial Statements included in the 2018 Annual Report, contractholder-directed equity securities and fair value option (“FVO”) securities (“FVO Securities”) (collectively, “Unit-linked and FVO Securities”) include three categories of investments for which the FVO has been elected, or are otherwise required to be carried at estimated fair value. Mortgage Loans by Portfolio Segment Mortgage loans are summarized as follows at: September 30, 2019 December 31, 2018 Carrying Value % of Carrying Value % of (Dollars in millions) Mortgage loans: Commercial $ 49,898 63.2 % $ 48,463 64.0 % Agricultural 15,752 19.9 14,905 19.7 Residential 13,441 17.0 12,427 16.4 Total recorded investment 79,091 100.1 75,795 100.1 Valuation allowances (350 ) (0.4 ) (342 ) (0.5 ) Subtotal mortgage loans, net 78,741 99.7 75,453 99.6 Residential — FVO (1) 218 0.3 299 0.4 Total mortgage loans, net $ 78,959 100.0 % $ 75,752 100.0 % __________________ (1) Information on residential mortgage loans — FVO is presented in Note 8 . The Company elects the FVO for certain residential mortgage loans that are managed on a total return basis. The amount of net discounts, included within total recorded investment, primarily residential, was $887 million and $944 million at September 30, 2019 and December 31, 2018 , respectively. Purchases of mortgage loans, primarily residential, were $1.1 billion and $3.0 billion for the three months and nine months ended September 30, 2019 , respectively, and $724 million and $1.7 billion for the three months and nine months ended September 30, 2018 , respectively. 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) September 30, 2019 Commercial $ — $ — $ — $ — $ — $ 49,898 $ 245 $ — Agricultural 13 13 1 195 194 15,545 47 206 Residential — — — 517 414 13,027 57 414 Total $ 13 $ 13 $ 1 $ 712 $ 608 $ 78,470 $ 349 $ 620 December 31, 2018 Commercial $ — $ — $ — $ — $ — $ 48,463 $ 238 $ — Agricultural 31 31 3 169 169 14,705 43 197 Residential — — — 431 386 12,041 58 386 Total $ 31 $ 31 $ 3 $ 600 $ 555 $ 75,209 $ 339 $ 583 The average recorded investment for impaired commercial, agricultural and residential mortgage loans was $0 , $214 million and $409 million , respectively, for the three months ended September 30, 2019 , and $0 , $188 million and $401 million , respectively, for the nine months ended September 30, 2019 . The average recorded investment for impaired commercial, agricultural and residential mortgage loans was $0 , $124 million and $370 million , respectively, for the three months ended September 30, 2018 , and $0 , $104 million and $350 million , respectively, for the nine months ended September 30, 2018 . Valuation Allowance Rollforward by Portfolio Segment The changes in the valuation allowance, by portfolio segment, were as follows: Nine Months 2019 2018 Commercial Agricultural Residential Total Commercial Agricultural Residential Total (In millions) Balance, beginning of period $ 238 $ 46 $ 58 $ 342 $ 214 $ 41 $ 59 $ 314 Provision (release) 7 7 6 20 18 1 9 28 Charge-offs, net of recoveries — (5 ) (7 ) (12 ) — — (6 ) (6 ) Balance, end of period $ 245 $ 48 $ 57 $ 350 $ 232 $ 42 $ 62 $ 336 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) September 30, 2019 Loan-to-value ratios: Less than 65% $ 41,317 $ 754 $ 512 $ 42,583 85.3 % $ 44,529 85.7 % 65% to 75% 5,708 54 208 5,970 12.0 6,150 11.8 76% to 80% 368 17 265 650 1.3 634 1.2 Greater than 80% 461 234 — 695 1.4 671 1.3 Total $ 47,854 $ 1,059 $ 985 $ 49,898 100.0 % $ 51,984 100.0 % December 31, 2018 Loan-to-value ratios: Less than 65% $ 40,360 $ 827 $ 101 $ 41,288 85.2 % $ 41,599 85.3 % 65% to 75% 5,790 — 25 5,815 12.0 5,849 12.0 76% to 80% 423 209 56 688 1.4 664 1.4 Greater than 80% 496 176 — 672 1.4 635 1.3 Total $ 47,069 $ 1,212 $ 182 $ 48,463 100.0 % $ 48,747 100.0 % Credit Quality of Agricultural Mortgage Loans The credit quality of agricultural mortgage loans was as follows at: September 30, 2019 December 31, 2018 Recorded % of Recorded % of (Dollars in millions) Loan-to-value ratios: Less than 65% $ 14,711 93.4 % $ 13,704 92.0 % 65% to 75% 952 6.0 1,145 7.7 76% to 80% 78 0.5 33 0.2 Greater than 80% 11 0.1 23 0.1 Total $ 15,752 100.0 % $ 14,905 100.0 % Credit Quality of Residential Mortgage Loans The credit quality of residential mortgage loans was as follows at: September 30, 2019 December 31, 2018 Recorded % of Recorded % of (Dollars in millions) Performance indicators: Performing $ 13,007 96.8 % $ 11,956 96.2 % Nonperforming (1) 434 3.2 471 3.8 Total $ 13,441 100.0 % $ 12,427 100.0 % __________________ (1) Includes residential mortgage loans in process of foreclosure of $118 million a nd $140 million at September 30, 2019 and December 31, 2018 , 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 September 30, 2019 and December 31, 2018 . 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 September 30, 2019 December 31, 2018 September 30, 2019 December 31, 2018 September 30, 2019 December 31, 2018 (In millions) Commercial $ — $ 9 $ — $ 9 $ 176 $ 176 Agricultural 202 204 129 109 88 105 Residential 434 471 37 35 397 436 Total $ 636 $ 684 $ 166 $ 153 $ 661 $ 717 Real Estate and Real Estate Joint Ventures The Company’s real estate investment portfolio is diversified by property type, geography and income stream, including income from operating leases, operating income and equity method income from real estate joint ventures. Real estate investments, by income type, as well as income earned, are as follows at and for the periods indicated: September 30, 2019 December 31, 2018 Three Months Nine Months 2019 2018 2019 2018 Carrying Value Income (In millions) Leased real estate investments $ 4,516 $ 4,132 $ 103 $ 103 $ 285 $ 311 Other real estate investments 488 461 45 45 135 135 Real estate joint ventures 5,242 5,105 33 27 70 92 Total real estate and real estate joint ventures $ 10,246 $ 9,698 $ 181 $ 175 $ 490 $ 538 The carrying value of real estate investments acquired through foreclosure was $43 million and $45 million at September 30, 2019 and December 31, 2018 , respectively. Depreciation expense on real estate investments was $28 million and $76 million for the three months and nine months ended September 30, 2019 , respectively, and $22 million and $69 million for the three months and nine months ended September 30, 2018 , respectively. Real estate investments were net of accumulated depreciation of $1.0 billion and $931 million at September 30, 2019 and December 31, 2018 , respectively. Leases Leased Real Estate Investments - Operating Leases The Company, as lessor, leases investment real estate, principally commercial real estate for office and retail use, through a variety of operating lease arrangements, which typically include tenant reimbursement for property operating costs and options to renew or extend the lease. In some circumstances, leases may include an option for the lessee to purchase the property. In addition, certain leases of retail space may stipulate that a portion of the income earned is contingent upon the level of the tenants’ revenues. The Company has elected a practical expedient of not separating non-lease components related to reimbursement of property operating costs from associated lease components. These property operating costs have the same timing and pattern of transfer as the related lease component, because they are incurred over the same period of time as the operating lease. Therefore, the combined component is accounted for as an operating lease. Risk is managed through lessee credit analysis, property type diversification, and geographic diversification, primarily across the United States. Leased real estate investments and income earned, by property type, are as follows at and for the periods indicated: September 30, 2019 December 31, 2018 Three Months Nine Months 2019 2018 2019 2018 Carrying Value Income (In millions) Leased real estate investments: Office $ 2,098 $ 1,999 $ 45 $ 42 $ 131 $ 131 Retail 1,151 1,006 32 21 81 72 Apartment 255 253 6 23 16 60 Industrial 304 223 11 10 33 29 Land 533 489 5 5 15 14 Hotel 94 94 2 1 5 1 Other 81 68 2 1 4 4 Total leased real estate investments $ 4,516 $ 4,132 $ 103 $ 103 $ 285 $ 311 Future contractual receipts under operating leases at September 30, 2019 are $77 million for the remainder of 2019, $246 million in 2020, $193 million in 2021, $163 million in 2022, $142 million in 2023, $992 million thereafter, and in total are $1.8 billion . Leveraged and Direct Financing Leases The Company has diversified leveraged lease and direct financing lease portfolios. Its leveraged leases principally include renewable energy generation facilities, rail cars, commercial real estate and commercial aircraft, and its direct financing leases principally include commercial real estate. These assets are leased through a variety of lease arrangements, which may include options to renew or extend the lease and options for the lessee to purchase the property. Residual values are estimated using available third-party data at inception of the lease. Risk is managed through lessee credit analysis, asset allocation, geographic diversification, and ongoing reviews of estimated residual values, using available third-party data and, in certain leases, linking the amount of future rental receipts to changes in inflation rates. Generally, estimated residual values are not guaranteed by the lessee or a third party. Investment in leveraged and direct financing leases consisted of the following at: September 30, 2019 December 31, 2018 Leveraged Leases Direct Financing Leases Leveraged Leases Direct Financing Leases (In millions) Lease receivables, net (1) $ 700 $ 1,891 $ 715 $ 1,855 Estimated residual values 786 42 807 42 Subtotal 1,486 1,933 1,522 1,897 Unearned income (378 ) (689 ) (414 ) (705 ) Investment in leases $ 1,108 $ 1,244 $ 1,108 $ 1,192 __________________ (1) Future contractual receipts under direct financing leases at September 30, 2019 are $30 million for the remainder of 2019, $104 million in 2020, $102 million in 2021, $124 million in 2022, $109 million in 2023, $1.4 billion thereafter, and in total $1.9 billion . Lease receivables are generally due in periodic installments. The payment periods for leveraged leases generally range from one to 15 years but in certain circumstances can be over 25 years, while the payment periods for direct financing leases generally range from one to 25 years but in certain circumstances can be over 25 years . For lease receivables, the primary credit quality indicator is whether the lease receivable is performing or nonperforming, which is assessed monthly. The Company generally defines nonperforming lease receivables as those that are 90 days or more past due. At both September 30, 2019 and December 31, 2018 , all leveraged lease receivables were performing and over 99% of direct financing lease receivables were performing. The Company’s deferred income tax liability related to leveraged leases was $500 million and $519 million at September 30, 2019 and December 31, 2018 , respectively. The components of income from investment in leveraged and direct financing leases, excluding net investment gains (losses), were as follows: Three Months Nine Months 2019 2018 2019 2018 Leveraged Leases Direct Financing Leases Leveraged Leases Direct Financing Leases Leveraged Leases Direct Financing Leases Leveraged Leases Direct Financing Leases (In millions) Lease investment income $ 12 $ 28 $ 12 $ 27 $ 36 $ 75 $ 35 $ 74 Less: Income tax expense 3 6 2 6 8 16 7 16 Lease investment income, net of income tax $ 9 $ 22 $ 10 $ 21 $ 28 $ 59 $ 28 $ 58 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 $11.6 billion and $9.0 billion at September 30, 2019 and December 31, 2018 , respectively. Net Unrealized Investment Gains (Losses) Unrealized investment gains (losses) on fixed maturity securities AFS and derivatives 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: September 30, 2019 December 31, 2018 (In millions) Fixed maturity securities AFS $ 32,849 $ 11,356 Fixed maturity securities AFS with noncredit OTTI losses included in AOCI 37 25 Total fixed maturity securities AFS 32,886 11,381 Derivatives 3,675 2,127 Other 312 290 Subtotal 36,873 13,798 Amounts allocated from: Future policy benefits (1,713 ) 31 DAC, VOBA and DSI (3,012 ) (1,231 ) Policyholder dividend obligation (2,370 ) (428 ) Subtotal (7,095 ) (1,628 ) Deferred income tax benefit (expense) related to noncredit OTTI losses recognized in AOCI (5 ) (3 ) Deferred income tax benefit (expense) (7,427 ) (3,502 ) Net unrealized investment gains (losses) 22,346 8,665 Net unrealized investment gains (losses) attributable to noncontrolling interests (16 ) (10 ) Net unrealized investment gains (losses) attributable to MetLife, Inc. $ 22,330 $ 8,655 The changes in net unrealized investment gains (losses) were as follows: Nine Months (In millions) Balance, beginning of period $ 8,655 Cumulative effects of changes in accounting principles, net of income tax (Note 1) 21 Fixed maturity securities AFS on which noncredit OTTI losses have been recognized 12 Unrealized investment gains (losses) during the period 23,037 Unrealized investment gains (losses) relating to: Future policy benefits (1,744 ) DAC, VOBA and DSI (1,781 ) Policyholder dividend obligation (1,942 ) Deferred income tax benefit (expense) related to noncredit OTTI losses recognized in AOCI (2 ) Deferred income tax benefit (expense) (3,920 ) Net unrealized investment gains (losses) 22,336 Net unrealized investment gains (losses) attributable to noncontrolling interests (6 ) Balance, end of period $ 22,330 Change in net unrealized investment gains (losses) $ 13,681 Change in net unrealized investment gains (losses) attributable to noncontrolling interests (6 ) Change in net unrealized investment gains (losses) attributable to MetLife, Inc. $ 13,675 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, at estimated fair value at September 30, 2019 and December 31, 2018 , were in fixed income securities of the Japanese government and its agencies of $33.6 billion and $30.2 billion , respectively, and in fixed income securities of the South Korean government and its agencies of $7.4 billion and $7.1 billion , respectively. Securities Lending and Repurchase Agreements Securities, Collateral and Reinvestment Portfolio A summary of the securities lending and repurchase agreements transactions is as follows: September 30, 2019 December 31, 2018 Securities on Loan (1) Securities on Loan (1) Amortized Cost Estimated Fair Value Cash Collateral Received from Counterparties (2), (3) Reinvestment Portfolio at Estimated Fair Value Amortized Cost Estimated Fair Value Cash Collateral Received from Counterparties (2), (3) Reinvestment Portfolio at Estimated Fair Value (In millions) Securities lending $ 15,994 $ 18,688 $ 19,001 $ 19,415 $ 16,969 $ 17,724 $ 18,005 $ 18,074 Repurchase agreements $ 1,609 $ 1,881 $ 1,833 $ 1,868 $ 1,033 $ 1,093 $ 1,067 $ 1,069 __________________ (1) Securities on loan in connection with securities lending are included within fixed maturities securities AFS, short-term investments and cash equivalents and securities on loan in connection with repurchase agreements are included within fixed maturities securities AFS, short-term investments and cash equivalents. (2) In connection with securities lending, in addition to cash collateral received, the Company received from counterparties security collateral of $105 million and $78 million at September 30, 2019 and December 31, 2018 , respectively , which may not be sold or re-pledged, unless the counterparty is in default, and is not reflected on the consolidated financial statements. (3) The securities lending liability for cash collateral is included within payables for collateral under securities loaned and other transactions, and the repurchase agreements liability for cash collateral is included within payables for collateral under securities loaned and other transactions and other liabilities. Contractual Maturities A summary of the remaining contractual maturities of securities lending agreements and repurchase agreements is as follows: September 30, 2019 December 31, 2018 Remaining Maturities Remaining Maturities Open (1) 1 Month or Less Over 1 to 6 Months Total Open (1) 1 Month or Less Over 1 to 6 Months Total (In millions) Cash collateral liability by loaned security type: Securities lending: U.S. government and agency $ 3,968 $ 7,903 $ 6,046 $ 17,917 $ 2,736 $ 8,995 $ 5,220 $ 16,951 Foreign government — 287 730 1,017 — 214 761 975 Agency RMBS — 67 — 67 — 79 — 79 Total $ 3,968 $ 8,257 $ 6,776 $ 19,001 $ 2,736 $ 9,288 $ 5,981 $ 18,005 Repurchase agreements: U.S. government and agency $ — $ 1,760 $ — $ 1,760 $ — $ 1,000 $ — $ 1,000 All other corporate and government — 34 39 73 — — 67 67 Total $ — $ 1,794 $ 39 $ 1,833 $ — $ 1,000 $ 67 $ 1,067 __________________ (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. The estimated fair value of the securities on loan related to this cash collateral at September 30, 2019 was $3.9 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. 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 securities lending and repurchase agreements reinvestment portfolios acquired with the cash collateral consist principally of high quality, liquid, publicly-traded fixed maturity securities AFS, short-term investments, 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. Federal Home Loan Bank of Boston Advance Agreements At September 30, 2019 , a subsidiary of the Company had pledged municipals and CMBS with an estimated fair value of $1.2 billion and $11 million , respectively, as collateral and received $800 million in cash advances under short-term advance agreements with the Federal Home Loan Bank (“FHLB”) of Boston. At December 31, 2018 , a subsidiary of the Company had pledged municipals with an estimated fair value of $1.2 billion and received $800 million in cash advances. The liability to return the cash advances is included within payables for collateral under securities loaned and other transactions. The estimated fair value of the reinvestment portfolio acquired with the cash advances was $840 million and $799 million at September 30, 2019 and December 31, 2018 , respectively, and consisted primarily of Structured Securities, U.S. and foreign c orporate securities and U.S. government and agency securities. At both September 30, 2019 and December 31, 2018 , the reinvestment portfolio also included a $33 million , at redemption value, required investment in FHLB of Boston common stock. The subsidiary is permitted to withdraw any portion of the pledged collateral over the minimum collateral requirement at any time, other than in the event of a default by the subsidiary. The cash advance liability by loaned security type and remaining contractual maturities of the agreements was as follows at: September 30, 2019 December 31, 2018 Remaining Maturities Remaining Maturities 1 Month or Less Over 1 to 6 Months 6 Months to 1 Year Total 1 Month or Less Over 1 to 6 Months 6 Months to 1 Year Total (In millions) Cash advance liability by loaned security type: Municipals $ 250 $ 475 $ 75 $ 800 $ 150 $ 650 $ — $ 800 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: September 30, 2019 December 31, 2018 (In millions) Invested assets on deposit (regulatory deposits) $ 1,976 $ 1,788 Invested assets held in trust (collateral financing arrangement and reinsurance agreements) 3,017 2,971 Invested assets pledged as collateral (1) 24,442 24,168 Total invested assets on deposit, held in trust and pledged as collateral $ 29,435 $ 28,927 __________________ (1) The Company has pledged invested assets in connection with various agreements and transactions, including funding agreements, secured debt, a collateral financing arrangement (see Notes 4, 12 and 13 of the Notes to the Consolidated Financial Statements included in the 2018 Annual Report) and derivative transactions (see Note 7 ). See “— Securities Lending and Repurchase Agreements” for information regarding securities supporting securities lending and repurchase agreement transactions and Note 5 for information regarding investments designated to the closed block. In addition, the restricted investment in FHLB common stock was $800 million and $793 million , at redemption value, at September 30, 2019 and December 31, 2018 , respectively. 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

Derivatives

Derivatives	9 Months Ended
	Sep. 30, 2019
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 derivative’s 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 • Derivatives held within 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 the same line item as the earnings effect of the hedged item. The carrying value of the hedged recognized asset or liability is adjusted for changes in its estimated fair value due to the hedged risk. • 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 - in OCI and reclassified into the statement of operations when the Company’s earnings are affected by the variability in cash flows of the hedged item. • Net investment in a foreign operation (“NIFO”) hedge - in OCI, consistent with the translation adjustment for the hedged net investment in the foreign operation. 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. 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 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 occurring, 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 of occurring are recognized immediately in net investment 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 issues certain products, which include variable annuities, 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). 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 securities AFS. 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 a benchmark interest rate, 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 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, and interest rate floors primarily to protect its minimum rate guarantee liabilities against declines in interest rates below a specified level. 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, to post variation margin on a daily basis in an amount equal to the difference in the daily market values of those contracts and to pledge initial margin based on futures exchange requirements. 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 issued 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. A synthetic guaranteed interest contract (“GIC”) is a contract that simulates the performance of a traditional GIC through the use of financial instruments. Under a synthetic GIC, the contractholder owns the underlying assets. The Company guarantees a rate of return on those assets for a premium. Synthetic GICs are not designated as hedging instruments. 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, NIFO hedges 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 non-U.S. subsidiaries. The Company utilizes currency options in NIFO hedges 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 issued 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 and involuntary restructuring for corporate obligors, as well as repudiation, moratorium or governmental intervention for sovereign obligors. 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, or other fixed maturity securities AFS. 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 issued by the Company. To hedge against adverse changes in equity indices, the Company enters into contracts to sell the underlying 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 issued 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, to post variation margin on a daily basis in an amount equal to the difference in the daily market values of those contracts and to pledge initial margin based on futures exchange requirements. 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 issued 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 a benchmark interest rate, 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: September 30, 2019 December 31, 2018 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 $ 2,305 $ 2,847 $ 3 $ 2,446 $ 2,197 $ 2 Foreign currency swaps Foreign currency exchange rate 1,155 72 — 1,233 54 — Foreign currency forwards Foreign currency exchange rate 2,396 13 16 2,140 28 18 Subtotal 5,856 2,932 19 5,819 2,279 20 Cash flow hedges: Interest rate swaps Interest rate 3,724 200 — 3,515 143 1 Interest rate forwards Interest rate 6,983 242 16 3,022 — 216 Foreign currency swaps Foreign currency exchange rate 35,668 2,449 1,666 35,931 1,796 1,831 Subtotal 46,375 2,891 1,682 42,468 1,939 2,048 NIFO hedges: Foreign currency forwards Foreign currency exchange rate 436 18 1 960 4 27 Currency options Foreign currency exchange rate 3,950 27 90 5,137 3 202 Subtotal 4,386 45 91 6,097 7 229 Total qualifying hedges 56,617 5,868 1,792 54,384 4,225 2,297 Derivatives Not Designated or Not Qualifying as Hedging Instruments: Interest rate swaps Interest rate 56,457 3,160 194 54,891 1,796 175 Interest rate floors Interest rate 12,701 212 — 12,701 102 — Interest rate caps Interest rate 55,638 14 6 54,575 154 1 Interest rate futures Interest rate 1,967 4 1 2,353 1 3 Interest rate options Interest rate 29,919 1,542 — 26,690 416 — Interest rate forwards Interest rate 235 15 — 234 1 15 Interest rate total return swaps Interest rate 1,048 48 8 1,048 33 2 Synthetic GICs Interest rate 28,098 — — 25,700 — — Foreign currency swaps Foreign currency exchange rate 13,235 920 498 11,388 884 458 Foreign currency forwards Foreign currency exchange rate 13,213 111 296 13,417 198 213 Currency futures Foreign currency exchange rate 891 — 3 847 4 — Currency options Foreign currency exchange rate 1,861 1 — 2,040 7 — Credit default swaps — purchased Credit 2,635 9 84 1,903 25 39 Credit default swaps — written Credit 11,583 231 2 11,391 95 13 Equity futures Equity market 4,128 7 16 2,992 13 77 Equity index options Equity market 28,783 759 684 27,707 884 550 Equity variance swaps Equity market 2,292 41 94 2,269 40 87 Equity total return swaps Equity market 836 3 2 929 91 — Total non-designated or nonqualifying derivatives 265,520 7,077 1,888 253,075 4,744 1,633 Total $ 322,137 $ 12,945 $ 3,680 $ 307,459 $ 8,969 $ 3,930 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 September 30, 2019 and December 31, 2018 . 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. The Effects of Derivatives on the Interim Condensed Consolidated Statements of Operations and Comprehensive Income (Loss) The following table presents the consolidated financial statement location and amount of gain (loss) recognized on fair value, cash flow, NIFO, nonqualifying hedging relationships and embedded derivatives: Three Months Ended September 30, 2019 Net Investment Income Net Investment Gains (Losses) Net Derivative Gains (Losses) Policyholder Benefits and Claims Interest Credited to Policyholder Account Balances Other Expenses OCI (In millions) Gain (Loss) on Fair Value Hedges: Interest rate derivatives: Derivatives designated as hedging instruments (1) $ (1 ) $ — $ — $ 223 $ 1 $ — N/A Hedged items — — — (237 ) — — N/A Foreign currency exchange rate derivatives: Derivatives designated as hedging instruments (1) 37 (6 ) — — — — N/A Hedged items (30 ) 5 — — — — N/A Amount excluded from the assessment of hedge effectiveness — (16 ) — — — — N/A Subtotal 6 (17 ) — (14 ) 1 — N/A Gain (Loss) on Cash Flow Hedges: Interest rate derivatives: (1) Amount of gains (losses) deferred in AOCI N/A N/A N/A N/A N/A N/A $ 526 Amount of gains (losses) reclassified from AOCI into income 5 1 — — — 1 (7 ) Foreign currency exchange rate derivatives: (1) Amount of gains (losses) deferred in AOCI N/A N/A N/A N/A N/A N/A 132 Amount of gains (losses) reclassified from AOCI into income — (344 ) — — — — 344 Foreign currency transaction gains (losses) on hedged items — 336 — — — — — Credit derivatives: (1) Amount of gains (losses) deferred in AOCI N/A N/A N/A N/A N/A N/A — Amount of gains (losses) reclassified from AOCI into income — — — — — — — Subtotal 5 (7 ) — — — 1 995 Gain (Loss) on NIFO Hedges: Foreign currency exchange rate derivatives (1) N/A N/A N/A N/A N/A N/A 25 Non-derivative hedging instruments N/A N/A N/A N/A N/A N/A 1 Subtotal N/A N/A N/A N/A N/A N/A 26 Gain (Loss) on Derivatives Not Designated or Not Qualifying as Hedging Instruments: Interest rate derivatives (1) (2 ) — 1,298 46 — — N/A Foreign currency exchange rate derivatives (1) — — 110 (3 ) — — N/A Credit derivatives — purchased (1) — — (5 ) — — — N/A Credit derivatives — written (1) — — (4 ) — — — N/A Equity derivatives (1) — — (51 ) (7 ) — — N/A Foreign currency transaction gains (losses) on hedged items — — (7 ) — — — N/A Subtotal (2 ) — 1,341 36 — — N/A Earned income on derivatives 66 — 131 35 (42 ) — — Embedded derivatives (2) N/A N/A (218 ) — N/A N/A N/A Total $ 75 $ (24 ) $ 1,254 $ 57 $ (41 ) $ 1 $ 1,021 Three Months Ended September 30, 2018 Net Investment Income Net Investment Gains (Losses) Net Derivative Gains (Losses) Policyholder Benefits and Claims Interest Credited to Policyholder Account Balances Other Expenses OCI (In millions) Gain (Loss) on Fair Value Hedges: Interest rate derivatives: Derivatives designated as hedging instruments (1) $ — $ — $ (107 ) $ — $ — $ — N/A Hedged items — — 108 — — — N/A Foreign currency exchange rate derivatives: Derivatives designated as hedging instruments (1) — — (56 ) — — — N/A Hedged items — — 48 — — — N/A Amount excluded from the assessment of hedge effectiveness — — (7 ) — — — N/A Subtotal — — (14 ) — — — N/A Gain (Loss) on Cash Flow Hedges: Interest rate derivatives: (1) Amount of gains (losses) deferred in AOCI N/A N/A N/A N/A N/A N/A $ (177 ) Amount of gains (losses) reclassified from AOCI into income 5 — (2 ) — — — (3 ) Foreign currency exchange rate derivatives: (1) Amount of gains (losses) deferred in AOCI N/A N/A N/A N/A N/A N/A (118 ) Amount of gains (losses) reclassified from AOCI into income (1 ) — (6 ) — — — 7 Foreign currency transaction gains (losses) on hedged items — — 11 — — — — Credit derivatives: (1) Amount of gains (losses) deferred in AOCI N/A N/A N/A N/A N/A N/A — Amount of gains (losses) reclassified from AOCI into income — — — — — — — Subtotal 4 — 3 — — — (291 ) Gain (Loss) on NIFO Hedges: Foreign currency exchange rate derivatives (1) N/A N/A N/A N/A N/A N/A 4 Non-derivative hedging instruments N/A N/A N/A N/A N/A N/A — Subtotal N/A N/A N/A N/A N/A N/A 4 Gain (Loss) on Derivatives Not Designated or Not Qualifying as Hedging Instruments: Interest rate derivatives (1) — — (364 ) (9 ) — — N/A Foreign currency exchange rate derivatives (1) — — (115 ) (1 ) — — N/A Credit derivatives — purchased (1) — — (9 ) — — — N/A Credit derivatives — written (1) — — 70 — — — N/A Equity derivatives (1) — — (254 ) (31 ) — — N/A Foreign currency transaction gains (losses) on hedged items — — (3 ) — — — N/A Subtotal — — (675 ) (41 ) — — N/A Earned income on derivatives 85 — 141 3 (28 ) (2 ) — Embedded derivatives (2) N/A N/A 167 — N/A N/A N/A Total $ 89 $ — $ (378 ) $ (38 ) $ (28 ) $ (2 ) $ (287 ) Nine Months Ended September 30, 2019 Net Investment Income Net Investment Gains (Losses) Net Derivative Gains (Losses) Policyholder Benefits and Claims Interest Credited to Policyholder Account Balances Other Expenses OCI (In millions) Gain (Loss) on Fair Value Hedges: Interest rate derivatives: Derivatives designated as hedging instruments (1) $ (5 ) $ — $ — $ 555 $ 1 $ — N/A Hedged items 5 — — (571 ) — — N/A Foreign currency exchange rate derivatives: Derivatives designated as hedging instruments (1) 17 39 — — — — N/A Hedged items (12 ) (37 ) — — — — N/A Amount excluded from the assessment of hedge effectiveness — (54 ) — — — — N/A Subtotal 5 (52 ) — (16 ) 1 — N/A Gain (Loss) on Cash Flow Hedges: Interest rate derivatives: (1) Amount of gains (losses) deferred in AOCI N/A N/A N/A N/A N/A N/A $ 1,136 Amount of gains (losses) reclassified from AOCI into income 16 (1 ) — — — 2 (17 ) Foreign currency exchange rate derivatives: (1) Amount of gains (losses) deferred in AOCI N/A N/A N/A N/A N/A N/A 191 Amount of gains (losses) reclassified from AOCI into income (3 ) (236 ) — — — 1 238 Foreign currency transaction gains (losses) on hedged items — 211 — — — — — Credit derivatives: (1) Amount of gains (losses) deferred in AOCI N/A N/A N/A N/A N/A N/A — Amount of gains (losses) reclassified from AOCI into income — — — — — — — Subtotal 13 (26 ) — — — 3 1,548 Gain (Loss) on NIFO Hedges: Foreign currency exchange rate derivatives (1) N/A N/A N/A N/A N/A N/A (18 ) Non-derivative hedging instruments N/A N/A N/A N/A N/A N/A (6 ) Subtotal N/A N/A N/A N/A N/A N/A (24 ) Gain (Loss) on Derivatives Not Designated or Not Qualifying as Hedging Instruments: Interest rate derivatives (1) (4 ) — 2,564 77 — — N/A Foreign currency exchange rate derivatives (1) — — 104 (4 ) — — N/A Credit derivatives — purchased (1) — — (25 ) — — — N/A Credit derivatives — written (1) — — 182 — — — N/A Equity derivatives (1) — — (900 ) (133 ) — — N/A Foreign currency transaction gains (losses) on hedged items — — (36 ) — — — N/A Subtotal (4 ) — 1,889 (60 ) — — N/A Earned income on derivatives 182 — 375 100 (110 ) — — Embedded derivatives (2) N/A N/A (171 ) — N/A N/A N/A Total $ 196 $ (78 ) $ 2,093 $ 24 $ (109 ) $ 3 $ 1,524 Nine Months Ended September 30, 2018 Net Investment Income Net Investment Gains (Losses) Net Derivative Gains (Losses) Policyholder Benefits and Claims Interest Credited to Policyholder Account Balances Other Expenses OCI (In millions) Gain (Loss) on Fair Value Hedges: Interest rate derivatives: Derivatives designated as hedging instruments (1

Fair Value

Fair Value	9 Months Ended
	Sep. 30, 2019
Fair Value Disclosures [Abstract]
Fair Value	8. Fair Value When developing estimated fair values, 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: September 30, 2019 Fair Value Hierarchy Level 1 Level 2 Level 3 Total (In millions) Assets Fixed maturity securities AFS: U.S. corporate $ — $ 81,740 $ 5,374 $ 87,114 Foreign government — 67,410 137 67,547 Foreign corporate — 55,580 7,520 63,100 U.S. government and agency 20,145 20,657 — 40,802 RMBS 8 26,406 3,177 29,591 ABS — 13,521 824 14,345 Municipals — 12,934 8 12,942 CMBS — 10,262 346 10,608 Total fixed maturity securities AFS 20,153 288,510 17,386 326,049 Equity securities 795 109 437 1,341 Unit-linked and FVO Securities (1) 10,270 1,902 499 12,671 Short-term investments (2) 929 1,556 374 2,859 Residential mortgage loans — FVO — — 218 218 Other investments 73 151 323 547 Derivative assets: (3) Interest rate 4 7,989 291 8,284 Foreign currency exchange rate — 3,542 69 3,611 Credit — 208 32 240 Equity market 7 754 49 810 Total derivative assets 11 12,493 441 12,945 Embedded derivatives within asset host contracts (4) — — 64 64 Separate account assets (5) 88,435 100,966 956 190,357 Total assets (6) $ 120,666 $ 405,687 $ 20,698 $ 547,051 Liabilities Derivative liabilities: (3) Interest rate $ 1 $ 203 $ 24 $ 228 Foreign currency exchange rate 3 2,485 82 2,570 Credit — 86 — 86 Equity market 16 686 94 796 Total derivative liabilities 20 3,460 200 3,680 Embedded derivatives within liability host contracts (4) — — 1,188 1,188 Separate account liabilities (5) 1 30 9 40 Total liabilities $ 21 $ 3,490 $ 1,397 $ 4,908 December 31, 2018 Fair Value Hierarchy Level 1 Level 2 Level 3 Total (In millions) Assets Fixed maturity securities AFS: U.S. corporate $ — $ 74,874 $ 4,074 $ 78,948 Foreign government — 62,150 138 62,288 Foreign corporate — 50,310 6,393 56,703 U.S. government and agency 19,656 19,666 — 39,322 RMBS — 24,734 3,227 27,961 ABS — 11,775 697 12,472 Municipals — 11,533 — 11,533 CMBS — 8,696 342 9,038 Total fixed maturity securities AFS 19,656 263,738 14,871 298,265 Equity securities 916 105 419 1,440 Unit-linked and FVO Securities (1) 10,216 1,995 405 12,616 Short-term investments (2) 1,470 1,746 33 3,249 Residential mortgage loans — FVO — — 299 299 Other investments 80 118 39 237 Derivative assets: (3) Interest rate 1 4,809 33 4,843 Foreign currency exchange rate 4 2,922 52 2,978 Credit — 91 29 120 Equity market 13 956 59 1,028 Total derivative assets 18 8,778 173 8,969 Embedded derivatives within asset host contracts (4) — — 71 71 Separate account assets (5) 79,726 94,886 944 175,556 Total assets (6) $ 112,082 $ 371,366 $ 17,254 $ 500,702 Liabilities Derivative liabilities: (3) Interest rate $ 3 $ 194 $ 218 $ 415 Foreign currency exchange rate — 2,660 89 2,749 Credit — 48 4 52 Equity market 77 550 87 714 Total derivative liabilities 80 3,452 398 3,930 Embedded derivatives within liability host contracts (4) — — 810 810 Separate account liabilities (5) 1 20 7 28 Total liabilities $ 81 $ 3,472 $ 1,215 $ 4,768 __________________ (1) Unit-linked and FVO Securities were primarily comprised of Unit-linked investments at both September 30, 2019 and December 31, 2018. (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 interim condensed consolidated balance sheets and derivative liabilities are presented within other liabilities on the interim condensed consolidated balance sheets. The amounts are presented gross in the tables above to reflect the presentation on the interim condensed 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 interim condensed consolidated balance sheets. Embedded derivatives within liability host contracts are presented within policyholder account balances and other liabilities on the interim condensed consolidated balance sheets. (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. (6) Total assets included in the fair value hierarchy excluded other limited partnership interests that are measured at estimated fair value using the net asset value (“NAV”) per share (or its equivalent) practical expedient. At September 30, 2019 and December 31, 2018, the estimated fair value of such investments was $103 million and $145 million , respectively. The following describes the valuation methodologies used to measure assets and liabilities at fair value. Investments 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 other investments is determined on a basis consistent with the methodologies described herein for securities. The valuation approaches and key inputs for each category of assets or liabilities that are classified within Level 2 and Level 3 of the fair value hierarchy are presented below. The primary valuation approaches are the market approach, which considers recent prices from market transactions involving identical or similar assets or liabilities, and the income approach, which converts expected future amounts (i.e., cash flows) to a single current, discounted amount. 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 AFS 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 Foreign government securities, U.S. government and agency securities and Municipals 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 Unit-linked and FVO Securities, Short-term investments and Other investments • Unit-linked and FVO Securities 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 NAV provided by the fund managers, which were based on observable inputs. • Unit-linked and FVO Securities, short-term investments and other investments are of a similar nature and class to the fixed maturity securities AFS and equity securities described above; accordingly, the valuation approaches and unobservable inputs used in their valuation are also similar to those described above. • Short-term investments and other investments are of a similar nature and class to the fixed maturity securities AFS and equity securities described above; accordingly, the valuation approaches and observable inputs used in their valuation are also similar to those described above. 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. 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 adjusting, 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 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) • repurchase rates • cross currency basis curves (2) • credit spreads • correlation between model inputs (1) • 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, annuity contracts, and investment risk within funds withheld related to certain 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 on the consolidated balance sheets. The Company 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, projecting 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 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 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) becoming observable. Assets and Liabilities Measured at Fair Value Using Significant Unobservable Inputs (Level 3) 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: September 30, 2019 December 31, 2018 Impact of Valuation Significant Range Weighted Range Weighted Fixed maturity securities AFS (3) U.S. corporate and foreign corporate • Matrix pricing • Offered quotes (4) 50 - 147 114 85 - 134 104 Increase • Market pricing • Quoted prices (4) 25 - 451 118 25 - 638 110 Increase • Consensus pricing • Offered quotes (4) 95 - 113 103 100 - 110 102 Increase RMBS • Market pricing • Quoted prices (4) — - 115 96 — - 106 94 Increase (5) ABS • Market pricing • Quoted prices (4) 3 - 124 97 3 - 116 97 Increase (5) • Consensus pricing • Offered quotes (4) 96 - 105 102 100 - 103 101 Increase (5) Derivatives Interest rate • Present value techniques • Swap yield (6) 164 - 221 268 - 317 Increase (7) • Repurchase rates (8) (7) - 5 (5) - 6 Decrease (7) Foreign currency exchange rate • Present value techniques • Swap yield (6) (169) - 328 (20) - 328 Increase (7) Credit • Present value techniques • Credit spreads (9) 96 - 100 97 - 103 Decrease (7) • Consensus pricing • Offered quotes (10) Equity market • Present value techniques or option pricing models • Volatility (11) 16% - 24% 21% - 26% Increase (7) • Correlation (12) 10% - 30% 10% - 30% Embedded derivatives Direct, assumed and ceded guaranteed minimum benefits • Option pricing techniques • Mortality rates: Ages 0 - 40 0% - 0.18% 0% - 0.18% Decrease (13) Ages 41 - 60 0.03% - 0.80% 0.03% - 0.80% Decrease (13) Ages 61 - 115 0.13% - 100% 0.12% - 100% Decrease (13) • Lapse rates: Durations 1 - 10 0.25% - 100% 0.25% - 100% Decrease (14) Durations 11 - 20 0.50% - 100% 2% - 100% Decrease (14) Durations 21 - 116 0.50% - 100% 1.25% - 100% Decrease (14) • Utilization rates 0% - 22% 0% - 25% Increase (15) • Withdrawal rates 0% - 20% 0% - 20% (16) • Long-term equity volatilities 5.85% - 30% 7.16% - 30% Increase (17) • Nonperformance risk spread 0.04% - 1.52% 0.04% - 1.77% Decrease (18) __________________ (1) The weighted average for fixed maturity securities AFS is determined based on the estimated fair value of the securities. (2) The impact of a decrease in input would have resulted in 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 have resulted in substantially lower (higher) valuations. (4) Range and weighted average are presented in accordance with the market convention for fixed maturity securities AFS of dollars per hundred dollars of par. (5) Changes in the assumptions used for the probability of default would have been 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 September 30, 2019 and December 31, 2018 , independent non-binding broker quotations were used in the determination of less than 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 rat

Leases

Leases	9 Months Ended
	Sep. 30, 2019
Leases [Abstract]
Lessee, Operating Leases	9. Leases The Company, as lessee, has entered into various lease and sublease agreements for office space and other equipment. At contract inception, the Company determines that an arrangement contains a lease if the contract conveys the right to control the use of an identified asset for a period of time in exchange for consideration. For contracts that contain a lease, the Company recognizes the ROU asset in Other assets and the lease liability in Other liabilities. Leases with an initial term of 12 months or less are not recorded on the balance sheet. ROU assets represent the Company’s right to use an underlying asset for the lease term and lease liabilities represent the Company’s obligation to make lease payments arising from the lease. ROU assets and liabilities are determined using the Company’s incremental borrowing rate based upon information available at commencement date to recognize the present value of lease payments over the lease term. The ROU asset also includes lease payments and excludes lease incentives. Lease terms may include options to extend or terminate the lease and are included in the lease measurement when it is reasonably certain that the Company will exercise that option. The Company has lease agreements with lease and non-lease components. The Company elected the practical expedient to not separate lease and non-lease components and accounted for these items as a single lease component for all asset classes. The majority of the Company’s leases and subleases are operating leases related to office space. The Company recognizes lease expense for operating leases on a straight-line basis over the lease term. The Company has operating leases with remaining lease terms of less than one year to 16 years . The remaining lease terms for the subleases are less than one year to 10 years . ROU Asset and Lease Liability The ROU assets and lease liabilities for operating leases were: September 30, 2019 (In millions) ROU asset (1) $ 1,543 Lease liability (1) $ 1,639 __________________ (1) Assets and liabilities include amounts recognized upon adoption of new guidance. See Note 1 . Lease Costs The components of operating lease costs were as follows: Three Months Nine Months 2019 (In millions) Operating lease cost $ 75 $ 219 Variable lease cost 9 32 Sublease income (22 ) (65 ) Net lease cost $ 62 $ 186 Operating lease expense was $86 million and $257 million for the three months and nine months ended September 30, 2018 , respectively. Non-cancelable sublease income was $23 million and $53 million for the three months and nine months ended September 30, 2018 , respectively. Other Information Supplemental other information related to operating leases was as follows: September 30, 2019 (Dollars in millions) Cash paid for amounts included in the measurement of lease liability - operating cash flows $ 208 ROU assets obtained in exchange for new lease liabilities $ 272 Weighted-average remaining lease term 8 years Weighted-average discount rate 3.3 % Maturities of Lease Liabilities Maturities of operating lease liabilities were as follows: September 30, 2019 (In millions) Remainder of 2019 $ 86 2020 281 2021 253 2022 217 2023 204 Thereafter 853 Total undiscounted cash flows 1,894 Less: interest 255 Present value of lease liability $ 1,639 Future minimum gross rental payments relating to lease arrangements in effect as determined prior to the adoption of ASU 2016-02 are as follows: December 31, 2018 (In millions) 2019 $ 292 2020 282 2021 260 2022 224 2023 209 Thereafter 859 Total $ 2,126 See Note 6 for information about the Company’s investments in leased real estate and leveraged and direct financing leases.

Long Term Debt

Long Term Debt	9 Months Ended
	Sep. 30, 2019
Debt Disclosure [Abstract]
Debt Disclosure [Text Block]	10. Long Term Debt Senior Notes In June 2019, MetLife, Inc. redeemed for cash and canceled its £400 million ( $509 million at repayment) aggregate principal amount 5.250% senior notes due June 2020 and the remaining $368 million aggregate principal amount of its 4.750% senior notes due February 2021 . The Company recorded a premium of $40 million paid in excess of the debt principal and accrued and unpaid interest to other expenses for the nine months ended September 30, 2019 . In May 2019, MetLife, Inc. issued the following fixed rate senior notes (“Senior Notes”), interest on which is payable semi-annually beginning in November 2019: • ¥25.2 billion ( $230 million at issuance) due May 2026 which bear interest annually at 0.495% ; • ¥64.9 billion ( $591 million at issuance) due May 2029 which bear interest annually at 0.769% ; • ¥10.7 billion ( $98 million at issuance) due May 2031 which bear interest annually at 0.898% ; • ¥26.5 billion ( $241 million at issuance) due May 2034 which bear interest annually at 1.189% ; and • ¥24.4 billion ( $222 million at issuance) due May 2039 which bear interest annually at 1.385% . In connection with the issuances, MetLife, Inc. incurred $9 million of related costs which are amortized over the applicable term of each series of the Senior Notes. MetLife, Inc. may redeem each series of the Senior Notes at its option, in whole, but not in part, at a redemption price equal to 100% of the principal amount of the Senior Notes to be redeemed, plus accrued and unpaid interest thereon, if certain events occur affecting the U.S. tax treatment of the Senior Notes.

Equity

Equity	9 Months Ended
	Sep. 30, 2019
Equity [Abstract]
Equity	11. Equity Preferred Stock Preferred stock authorized, issued and outstanding was as follows at both September 30, 2019 and December 31, 2018 : Series Shares Shares Shares 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 5.875% Fixed-to-Floating Rate Non-Cumulative Preferred Stock, Series D 500,000 500,000 500,000 5.625% Non-Cumulative Preferred Stock, Series E 32,200 32,200 32,200 Series A Junior Participating Preferred Stock 10,000,000 — — Not designated 160,367,800 — — Total 200,000,000 26,032,200 26,032,200 The declaration, record and payment dates, as well as per share and aggregate dividend amounts, for MetLife, Inc.’s preferred stock were as follows for the nine months ended September 30, 2019 and 2018 : Declaration Date Record Date Payment Date Preferred Stock Dividend Series A Series C Series D Series E Per Share Aggregate Per Aggregate Per Aggregate Per Aggregate (In millions, except per share data) August 15, 2019 September 1, 2019 September 16, 2019 $ 0.253 $ 6 $ — $ — $ — $ — $ — $ — August 15, 2019 August 31, 2019 September 16, 2019 — — — — 29.375 15 351.563 11 May 15, 2019 May 31, 2019 June 17, 2019 0.261 6 26.250 39 — — 351.563 12 March 5, 2019 February 28, 2019 March 15, 2019 0.250 6 — — — — — — February 15, 2019 February 28, 2019 March 15, 2019 — — — — 29.375 15 351.563 11 Total $ 0.764 $ 18 $ 26.250 $ 39 $ 58.750 $ 30 $ 1,054.689 $ 34 August 15, 2018 August 31, 2018 September 17, 2018 $ 0.256 $ 6 $ — $ — $ 28.233 $ 14 $ 394.531 $ 12 May 15, 2018 May 31, 2018 June 15, 2018 0.256 7 26.250 39 — — — — March 5, 2018 February 28, 2018 March 15, 2018 0.250 6 — — — — — — Total $ 0.762 $ 19 $ 26.250 $ 39 $ 28.233 $ 14 $ 394.531 $ 12 Common Stock For the nine months ended September 30, 2019 and 2018 , MetLife, Inc. repurchased 44,035,255 shares and 59,602,926 shares of its common stock, respectively, through open market purchases for $2.0 billion and $2.8 billion , respectively. MetLife, Inc. announced that its Board of Directors authorized common stock repurchases as follows: Authorization Remaining at Announcement Date Authorization Amount September 30, 2019 (In millions) July 31, 2019 $ 2,000 $ 1,235 November 1, 2018 $ 2,000 $ — May 22, 2018 $ 1,500 $ — November 1, 2017 $ 2,000 $ — Under these authorizations, MetLife, Inc. may purchase its common stock from the MetLife Policyholder Trust in the open market (including pursuant to the terms of a pre-set trading plan meeting the requirements of Rule 10b5-1 under the Securities Exchange Act of 1934 (“Exchange Act”)), and in privately negotiated transactions. Common stock repurchases are subject to the discretion of MetLife, Inc.’s Board of Directors and will depend upon 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, applicable regulatory approvals, and other legal and accounting factors. The declaration, record and payment dates, as well as per share and aggregate dividend amounts, for MetLife, Inc.’s common stock were as follows for the nine months ended September 30, 2019 and 2018 : Declaration Date Record Date Payment Date Common Stock Dividend Per Share Aggregate (In millions, except per share data) July 8, 2019 August 6, 2019 September 13, 2019 $ 0.440 $ 413 April 23, 2019 May 7, 2019 June 13, 2019 $ 0.440 419 January 7, 2019 February 5, 2019 March 13, 2019 $ 0.420 405 $ 1,237 July 6, 2018 August 6, 2018 September 13, 2018 $ 0.420 $ 419 April 24, 2018 May 7, 2018 June 13, 2018 $ 0.420 428 January 5, 2018 February 5, 2018 March 13, 2018 $ 0.400 416 $ 1,263 See Note 17 for information on a common stock dividend declared subsequent to September 30, 2019 . 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, 2016 – December 31, 2018 performance period was 87.7% , which was determined within a possible range from 0% to 175% . This factor has been applied to the 1,594,846 Performance Shares and 212,464 Performance Units associated with that performance period that vested on December 31, 2018 . As a result, in the first quarter of 2019 , MetLife, Inc. issued 1,398,680 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 186,331 Performance Units (less withholding for taxes and other items, as applicable). Dividend Restrictions Insurance Operations For the nine months ended September 30, 2019 , American Life Insurance Company paid a dividend of $600 million to MetLife, Inc., for which regulatory approval was obtained as required. See Note 15 of the Notes to Consolidated Financial Statements included in the 2018 Annual Report for additional information on dividend restrictions. 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 $ 16,340 $ 2,041 $ (4,766 ) $ (1,984 ) $ 11,631 OCI before reclassifications 4,064 658 (404 ) — 4,318 Deferred income tax benefit (expense) (829 ) (140 ) (2 ) — (971 ) AOCI before reclassifications, net of income tax 19,575 2,559 (5,172 ) (1,984 ) 14,978 Amounts reclassified from AOCI (84 ) 337 — 29 282 Deferred income tax benefit (expense) 18 (75 ) — (6 ) (63 ) Amounts reclassified from AOCI, net of income tax (66 ) 262 — 23 219 Balance, end of period $ 19,509 $ 2,821 $ (5,172 ) $ (1,961 ) $ 15,197 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 $ 8,538 $ 1,165 $ (4,670 ) $ (2,179 ) $ 2,854 OCI before reclassifications (1,953 ) (295 ) (240 ) 131 (2,357 ) Deferred income tax benefit (expense) 436 (22 ) 15 (27 ) 402 AOCI before reclassifications, net of income tax 7,021 848 (4,895 ) (2,075 ) 899 Amounts reclassified from AOCI (30 ) 4 — 31 5 Deferred income tax benefit (expense) 7 96 — (7 ) 96 Amounts reclassified from AOCI, net of income tax (23 ) 100 — 24 101 Balance, end of period $ 6,998 $ 948 $ (4,895 ) $ (2,051 ) $ 1,000 Nine 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 $ 7,042 $ 1,613 $ (4,905 ) $ (2,028 ) $ 1,722 OCI before reclassifications 16,263 1,305 (266 ) (2 ) 17,300 Deferred income tax benefit (expense) (3,634 ) (287 ) (1 ) — (3,922 ) AOCI before reclassifications, net of income tax 19,671 2,631 (5,172 ) (2,030 ) 15,100 Amounts reclassified from AOCI (213 ) 221 — 88 96 Deferred income tax benefit (expense) 48 (49 ) — (19 ) (20 ) Amounts reclassified from AOCI, net of income tax (165 ) 172 — 69 76 Cumulative effects of changes in accounting principles 4 22 — — 26 Deferred income tax benefit (expense), cumulative effects of changes in accounting principles (1 ) (4 ) — — (5 ) Cumulative effects of changes in accounting principles, net of income tax (2) 3 18 — — 21 Balance, end of period $ 19,509 $ 2,821 $ (5,172 ) $ (1,961 ) $ 15,197 Nine 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 $ 12,757 $ 905 $ (4,390 ) $ (1,845 ) $ 7,427 OCI before reclassifications (8,860 ) (506 ) (657 ) 130 (9,893 ) Deferred income tax benefit (expense) 1,977 77 24 (27 ) 2,051 AOCI before reclassifications, net of income tax 5,874 476 (5,023 ) (1,742 ) (415 ) Amounts reclassified from AOCI 98 309 — 93 500 Deferred income tax benefit (expense) (22 ) (47 ) — (20 ) (89 ) Amounts reclassified from AOCI, net of income tax 76 262 — 73 411 Cumulative effects of changes in accounting principles (425 ) — — — (425 ) Deferred income tax benefit (expense), cumulative effects of changes in accounting principles 1,473 210 36 (382 ) 1,337 Cumulative effects of changes in accounting principles, net of income tax (3) 1,048 210 36 (382 ) 912 Sale of subsidiary (4) — — 92 — 92 Balance, end of period $ 6,998 $ 948 $ (4,895 ) $ (2,051 ) $ 1,000 __________________ (1) See Note 6 for information on offsets to investments related to future policy benefits, DAC, VOBA and DSI, and the policyholder dividend obligation. (2) See Note 1 for further information on adoption of new accounting pronouncements. (3) See Note 1 of the Notes to the Consolidated Financial Statements included in the 2018 Annual Report for further information on adoption of new accounting pronouncements. (4) See Note 3 of the Notes to the Consolidated Financial Statements included in the 2018 Annual Report. 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 Nine Months 2019 2018 2019 2018 (In millions) Net unrealized investment gains (losses): Net unrealized investment gains (losses) $ 84 $ 101 $ 200 $ (36 ) Net investment gains (losses) Net unrealized investment gains (losses) (12 ) 9 (15 ) 9 Net investment income Net unrealized investment gains (losses) 12 (80 ) 28 (71 ) Net derivative gains (losses) Net unrealized investment gains (losses), before income tax 84 30 213 (98 ) Income tax (expense) benefit (18 ) (7 ) (48 ) 22 Net unrealized investment gains (losses), net of income tax 66 23 165 (76 ) Unrealized gains (losses) on derivatives - cash flow hedges: Interest rate derivatives 5 5 16 15 Net investment income Interest rate derivatives 1 — (1 ) — Net investment gains (losses) Interest rate derivatives — (2 ) — 18 Net derivative gains (losses) Interest rate derivatives 1 — 2 1 Other expenses Foreign currency exchange rate derivatives — (1 ) (3 ) (2 ) Net investment income Foreign currency exchange rate derivatives (344 ) — (236 ) — Net investment gains (losses) Foreign currency exchange rate derivatives — (6 ) — (342 ) Net derivative gains (losses) Foreign currency exchange rate derivatives — — 1 1 Other expenses Gains (losses) on cash flow hedges, before income tax (337 ) (4 ) (221 ) (309 ) Income tax (expense) benefit 75 (96 ) 49 47 Gains (losses) on cash flow hedges, net of income tax (262 ) (100 ) (172 ) (262 ) Defined benefit plans adjustment: (1) Amortization of net actuarial gains (losses) (36 ) (37 ) (108 ) (108 ) Amortization of prior service (costs) credit 7 6 20 15 Amortization of defined benefit plan items, before income tax (29 ) (31 ) (88 ) (93 ) Income tax (expense) benefit 6 7 19 20 Amortization of defined benefit plan items, net of income tax (23 ) (24 ) (69 ) (73 ) Total reclassifications, net of income tax $ (219 ) $ (101 ) $ (76 ) $ (411 ) __________________ (1) These AOCI components are included in the computation of net periodic benefit costs. See Note 13 .

Other Revenues and Other Expens

Other Revenues and Other Expenses	9 Months Ended
	Sep. 30, 2019
Other Income and Expenses [Abstract]
Other Income and Other Expense Disclosure	12. Other Revenues and Other Expenses Other Revenues Information on other revenues, which primarily includes fees related to service contracts from customers, was as follows: Three Months Nine Months 2019 2018 2019 2018 (In millions) Prepaid legal plans $ 87 $ 74 $ 259 $ 220 Fee-based investment management 67 74 213 219 Recordkeeping and administrative services (1) 52 56 154 170 Administrative services-only contracts 53 53 159 162 Other revenue from service contracts from customers 54 72 189 208 Total revenues from service contracts from customers 313 329 974 979 Other 106 150 417 449 Total other revenues $ 419 $ 479 $ 1,391 $ 1,428 __________________ (1) Related to products and businesses no longer actively marketed by the Company. Other Expenses Information on other expenses was as follows: Three Months Nine Months 2019 2018 2019 2018 (In millions) Employee related costs (1) $ 876 $ 921 $ 2,714 $ 2,752 Third party staffing costs 425 435 1,214 1,217 General and administrative expenses 273 290 733 884 Pension, postretirement and postemployment benefit costs 57 45 170 141 Premium taxes, other taxes, and licenses & fees 164 193 508 559 Commissions and other variable expenses 1,514 1,403 4,433 4,257 Capitalization of DAC (882 ) (810 ) (2,531 ) (2,440 ) Amortization of DAC and VOBA 797 732 2,110 2,132 Amortization of negative VOBA (4 ) (7 ) (24 ) (45 ) Interest expense on debt 223 267 731 862 Total other expenses $ 3,443 $ 3,469 $ 10,058 $ 10,319 __________________ (1) Includes ($59) million and ($176) million for the three months and nine months ended September 30, 2019 , respectively, and ($40) million and ($57) million for the three months and nine months ended September 30, 2018 , respectively, for the net change in cash surrender value of investments in certain life insurance policies, net of premiums paid. 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 Nine Months 2019 2018 2019 2018 Severance (In millions) Balance, beginning of period $ 20 $ 20 $ 23 $ 22 Restructuring charges 40 17 61 35 Cash payments (13 ) (17 ) (37 ) (37 ) Balance, end of period $ 47 $ 20 $ 47 $ 20 Total restructuring charges incurred since inception of initiative $ 197 $ 108 $ 197 $ 108 Management anticipates further restructuring charges through the year ending December 31, 2019 and expects to bring the program to a close at that time. While management anticipates final restructuring charges in the fourth quarter, program assumptions, which include a significant amount of variability, are still being evaluated and finalized. Therefore, management is unable to make an estimate of remaining restructuring charges at September 30, 2019 .

Employee Benefit Plans

Employee Benefit Plans	9 Months Ended
	Sep. 30, 2019
Retirement Benefits [Abstract]
Employee Benefit Plans	13. Employee Benefit Plans Pension and Other Postretirement Benefit Plans Certain subsidiaries of MetLife, Inc. sponsor and/or administer a U.S. qualified and various U.S. and non-U.S. nonqualified defined benefit pension plans and other postretirement employee benefit plans covering employees who meet specified eligibility requirements. These subsidiaries also provide certain postemployment benefits and certain postretirement medical and life insurance benefits for U.S. and non-U.S. retired employees. The components of net periodic benefit costs, reported in other expenses, were as follows: Three Months 2019 2018 Pension Benefits Other Postretirement Benefits Pension Benefits Other Postretirement Benefits (In millions) Service costs $ 59 $ 2 $ 58 $ 1 Interest costs 104 13 95 13 Expected return on plan assets (122 ) (16 ) (133 ) (18 ) Amortization of net actuarial (gains) losses 49 (13 ) 46 (9 ) Amortization of prior service costs (credit) (4 ) (3 ) (1 ) (5 ) Net periodic benefit costs (credit) $ 86 $ (17 ) $ 65 $ (18 ) Nine Months 2019 2018 Pension Benefits Other Postretirement Benefits Pension Benefits Other Postretirement Benefits (In millions) Service costs $ 174 $ 4 $ 176 $ 4 Interest costs 312 39 287 39 Expected return on plan assets (367 ) (50 ) (400 ) (54 ) Amortization of net actuarial (gains) losses 145 (37 ) 134 (26 ) Amortization of prior service costs (credit) (12 ) (8 ) (1 ) (14 ) Net periodic benefit costs (credit) $ 252 $ (52 ) $ 196 $ (51 )

Income Tax

Income Tax	9 Months Ended
	Sep. 30, 2019
Income Tax Disclosure [Abstract]
Income Tax	14. Income Tax For both the three months and nine months ended September 30, 2019 , the effective tax rate on income (loss) before provision for income tax was 22% . The Company’s effective tax rate for the three months ended September 30, 2019 differed from the U.S. statutory rate primarily due to tax charges from foreign earnings taxed at different rates than the U.S. statutory rate, partially offset by tax benefits related to non-taxable investment income and tax credits. The Company’s effective tax rate for the nine months ended September 30, 2019 differed from the U.S. statutory rate primarily due to tax charges from foreign earnings taxed at different rates than the U.S. statutory rate and the impact from the definitive agreement to sell MetLife Hong Kong, partially offset by tax benefits related to non-taxable investment income and tax credits. For the three months ended September 30, 2018 , the effective tax rate on income (loss) before provision for income tax was 15% . The Company’s effective tax rate differed from the U.S. statutory rate primarily due to tax benefits related to non-taxable investment income and tax credits, partially offset by tax charges from foreign earnings taxed at different rates than the U.S. statutory rate. For the nine months ended September 30, 2018 , the effective tax rate on income (loss) before provision for income tax was 20% . The Company’s effective tax rate differed from the U.S. statutory rate primarily due to tax benefits related to non-taxable investment income, tax credits and a non-cash transfer of assets from a wholly-owned United Kingdom investment subsidiary to its U.S. parent. These tax benefits were partially offset by tax charges from foreign earnings taxed at different rates than the U.S. statutory rate, a non-deductible loss incurred on the mark-to-market and disposition of FVO Brighthouse Common Stock and a tax adjustment in Chile.

Earnings Per Common Share

Earnings Per Common Share	9 Months Ended
	Sep. 30, 2019
Earnings Per Share [Abstract]
Earnings Per Common Share	15. 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 Nine Months 2019 2018 2019 2018 (In millions, except per share data) Weighted Average Shares: Weighted average common stock outstanding - basic 929.6 992.7 944.0 1,014.6 Incremental common shares from assumed exercise or issuance of stock-based awards 6.8 8.0 6.8 8.2 Weighted average common stock outstanding - diluted 936.4 1,000.7 950.8 1,022.8 Net Income (Loss): Net income (loss) $ 2,190 $ 915 $ 5,321 $ 3,066 Less: Net income (loss) attributable to noncontrolling interests 6 3 15 10 Less: Preferred stock dividends 32 32 121 84 Net income (loss) available to MetLife, Inc.’s common shareholders $ 2,152 $ 880 $ 5,185 $ 2,972 Basic $ 2.31 $ 0.89 $ 5.49 $ 2.93 Diluted $ 2.30 $ 0.88 $ 5.45 $ 2.91

Contingencies, Commitments and

Contingencies, Commitments and Guarantees	9 Months Ended
	Sep. 30, 2019
Commitments and Contingencies Disclosure [Abstract]
Contingencies, Commitments and Guarantees	16. Contingencies, Commitments and Guarantees Contingencies Litigation The Company is a defendant in a large number of litigation matters. Putative or certified class action litigation and other litigation and claims and assessments against the Company, in addition to those discussed below 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, broker-dealer, and taxpayer. The Company also 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 U.S. Securities and Exchange Commission (“SEC”); federal governmental authorities, including congressional committees; and the Financial Industry Regulatory Authority, as well as from local and national regulators and government authorities in jurisdictions outside the United States where the Company conducts business. The issues involved in information requests and regulatory matters vary widely, but can include inquiries or investigations concerning the Company’s compliance with applicable insurance and other laws and regulations. The Company cooperates in these inquiries. 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. It is not possible to predict the ultimate outcome of all pending investigations and legal proceedings. 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 September 30, 2019 . 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. 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. 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 matters where a loss is believed to be reasonably possible, but not probable, the Company has not made an accrual. As of September 30, 2019 , the Company estimates the aggregate range of reasonably possible losses in excess of amounts accrued for these matters to be $0 to $275 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 2018 Annual Report, MLIC received approximately 3,359 asbestos-related claims in 2018 . For the nine months ended September 30, 2019 and 2018 , MLIC received approximately 2,493 and 2,558 new asbestos-related claims, respectively. See Note 20 of the Notes to the Consolidated Financial Statements included in the 2018 Annual Report for historical information concerning asbestos claims and MLIC’s update in its recorded liability at December 31, 2018. 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 September 30, 2019 . 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. 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 (the “Ontario Litigation”). 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. In September 2018, the Court of Appeal for Ontario affirmed the lower court’s decision to not certify the sales practices claims in the Ontario Litigation. 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. City of Westland Police and Fire Retirement System v. MetLife, Inc., et. al. (S.D.N.Y., filed January 12, 2012) Plaintiff filed this class action on behalf of a class of persons who either purchased MetLife, Inc. common shares between February 9, 2011, and October 6, 2011, or purchased or acquired MetLife, Inc. common stock in the Company’s August 3, 2010 offering or the Company’s March 4, 2011 offering. 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 Exchange Act 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 purportedly 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. Owens v. Metropolitan Life Insurance Company (N.D. Ga., filed April 17, 2014) Plaintiff filed this class action lawsuit on behalf of persons for whom MLIC established a Total Control Account (“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 class. In addition, plaintiff, on behalf of a subgroup of the class, seeks interest under Georgia’s delayed settlement interest statute, alleging that the use of the TCA as the settlement option did not constitute payment. On September 27, 2016, the court denied MLIC’s summary judgment motion in full and granted plaintiff’s partial summary judgment motion. On September 29, 2017, the court certified a nationwide class. The court also certified a Georgia subclass. On July 29, 2019, the court preliminarily approved a proposed settlement in which MLIC has agreed to pay $80 million to resolve the claims of all class members. The settlement does not include or constitute an admission, concession, or finding of any fault, liability, or wrongdoing by MLIC. The Company accrued the full amount of the settlement payment in prior periods. 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. Plaintiffs assert causes of action for declaratory relief, violation of California’s Unfair Competition Law and Usury Law, and unjust enrichment. Plaintiffs seek 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 appealed this ruling to the United States Court of Appeals for the Ninth Circuit. 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, on behalf of herself and all persons over age 65 who selected a Reduced Pay at Age 65 payment feature on their long-term care insurance policies and whose premium rates were increased after age 65. 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 to dismiss the action. Plaintiff appealed this ruling and the United States Court of Appeals for the Seventh Circuit reversed and remanded the case to the district court for further proceedings. On November 1, 2019, plaintiff filed a motion with the United States District Court Northern District of Illinois seeking preliminary approval of a class settlement and for certification of a nationwide settlement class. The Company accrued the full amount of the settlement payment in prior periods. Julian & McKinney v. Metropolitan Life Insurance Company (S.D.N.Y., filed February 9, 2017) Plaintiffs filed this putative class and collective action on behalf of themselves and all current and former long-term disability (“LTD”) claims specialists between February 2011 and the present for alleged wage and hour violations under the Fair Labor Standards Act, the New York Labor Law, and the Connecticut Minimum Wage Act. The suit alleges that MLIC improperly reclassified the plaintiffs and similarly situated LTD claims specialists from non-exempt to exempt from overtime pay in November 2013. As a result, they and members of the putative class were no longer eligible for overtime pay even though they allege they continued to work more than 40 hours per week. Plaintiffs seek unspecified compensatory and punitive damages, as well as other relief. On March 22, 2018, the Court conditionally certified the case as a collective action, requiring that notice be mailed to LTD claims specialists who worked for the Company from February 8, 2014 to the present. The Company intends to defend this action vigorously. Total Asset Recovery Services, LLC. v. MetLife, Inc., et al. (Supreme Court of the State of New York, County of New York, filed December 27, 2017) Total Asset Recovery Services (“The Relator”) brought an action under the qui tam provision of the New York False Claims Act (the “Act”) on behalf of itself and the State of New York. The Relator originally filed this action under seal in 2010, and the complaint was unsealed on December 19, 2017. The Relator alleges that MetLife, Inc., MLIC, and several other insurance companies violated the Act by filing false unclaimed property reports with the State of New York from 1986 to 2017, to avoid having to escheat the proceeds of more than 25,000 life insurance policies, including policies for which the defendants escheated funds as part of their demutualizations in the late 1990s. The Relator seeks treble damages and other relief. On April 3, 2019, the Court granted MetLife, Inc.’s and MLIC’s motion to dismiss and dismissed the complaint in its entirety. The Relator filed a notice of appeal with the Appellate Division of the New York State Supreme Court, First Division. Regulatory and Litigation Matters Related to Group Annuity Benefits In 2018, the Company announced that it identified a material weakness in its internal control over financial reporting related to the practices and procedures for estimating reserves for certain group annuity benefits. The Company is exposed to lawsuits and regulatory investigations, and could be exposed to additional legal actions relating to these issues. These may result in payments, including damages, fines, penalties, interest and other amounts assessed or awarded by courts or regulatory authorities under applicable escheat, tax, securities, ERISA, or other laws or regulations. The Company could incur significant costs in connection with these actions. Regulatory Matters The Division of Enforcement of the SEC is investigating this issue and several additional regulators have made similar inquiries. It is possible that other jurisdictions may pursue similar investigations or inquiries. Litigation Matters Parchmann v. MetLife, Inc., et. al. (E.D.N.Y., filed February 5, 2018) Plaintiff filed this putative class action seeking to represent a class of persons who purchased MetLife, Inc. common stock from February 27, 2013 through January 29, 2018. Plaintiff alleges that MetLife, Inc., its Chief Executive Officer and Chairman of the Board, and its Chief Financial Officer violated Section 10(b) of the Exchange Act and Rule 10b-5 promulgated thereunder by issuing materially false and/or misleading financial statements. Plaintiff alleges that MetLife’s practices and procedures for estimating reserves for certain group annuity benefits were inadequate, and that MetLife had inadequate internal control over financial reporting. Plaintiff seeks unspecified compensatory damages and other relief. Defendants intend to defend this action vigorously. Derivative Actions and Demands Shareholders, seeking to sue derivatively on behalf of MetLife, Inc., commenced three separate actions against certain current and former members of the MetLife, Inc. Board of Directors and/or certain current and former officers of MetLife, Inc., alleging that, among other things, they breached their fiduciary and other duties to the Company. In Kates v. Kandarian, et al. (E.D.N.Y., filed January 18, 2019) and Felt, et al. v. Grise, et al. (D. Del., filed April 29, 2019), plaintiffs allege that the defendants disseminated or approved public statements that failed to disclose that MetLife’s practices and procedures for estimating reserves for certain group annuity benefits were inadequate and that MetLife had inadequate internal control over financial reporting. In Lifschitz v. Kandarian, et al. (Del. Ch., filed June 19, 2019), plaintiff alleges that the MetLife, Inc. Board of Directors knew or should have known that MetLife’s practices and procedures for estimating reserves for certain group annuity benefits were inadequate. In all three actions, plaintiffs allege that because of the defendants’ breaches of duty, MetLife, Inc. has incurred damage to its reputation and has suffered other unspecified damages. The defendants intend to defend this action vigorously. The MetLife, Inc. Board of Directors received five letters, dated March 28, 2018, May 11, 2018, July 16, 2018, December 20, 2018 and February 5, 2019, written on behalf of individual stockholders, demanding that MetLife, Inc. take action against current and former directors and officers for alleged breaches of fiduciary duty and/or investigate, remediate, and recover damages allegedly suffered by the Company as a result of (i) the Company’s allegedly inadequate practices and procedures for estimating reserves for certain group annuity benefits, (ii) the Company’s allegedly inadequate internal controls over financial reporting and corporate governance practices and procedures, and (iii) the alleged dissemination of false or misleading information related to these issues. The MetLife, Inc. Board of Directors appointed a special committee to investigate the allegations set forth in these five letters. Regulatory Inquiry Related to Assumed Variable Annuity Guarantee Reserves In 2018, the Company announced that it identified a material weakness in its internal control over financial reporting related to the calculation of reserves associated with certain variable annuity guarantees assumed from the former operating joint venture in Japan. The Division of Enforcement of the SEC is investigating this issue and the Company has informed other regulators. It is possible that other regulators may pursue similar investigations or inquiries. The Company is exposed to lawsuits and regulatory investigations, and could be exposed to additional legal actions relating to these issues. These may result in payments, including damages, fines, penalties, interest and other amounts assessed or awarded by courts or regulatory authorities under applicable laws or regulations. The Company could incur significant costs in connection with these actions. Commitments Mortgage Loan Commitments The Company commits to lend funds under mortgage loan commitments. The amounts of these mortgage loan commitments were $4.4 billion and $4.0 billion at September 30, 2019 and December 31, 2018 , 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 $7.5 billion and $7.7 billion at September 30, 2019 and December 31, 2018 , 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 $634 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 also has minimum fund yield requirements on certain pension funds. 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 $7 million at both September 30, 2019 and December 31, 2018 for indemnities, guarantees and commitments.

Subsequent Events

Subsequent Events	9 Months Ended
	Sep. 30, 2019
Subsequent Events [Abstract]
Subsequent Event	17. Subsequent Events Common Stock Dividend On October 22, 2019 , the MetLife, Inc. Board of Directors declared a fourth quarter 2019 common stock dividend of $0.44 per share payable on December 13, 2019 to shareholders of record as of November 5, 2019 . The Company estimates that the aggregate dividend payment will be $406 million .

Business, Basis of Presentati_2

Business, Basis of Presentation and Summary of Significant Accounting Policies (Policies)	9 Months Ended
	Sep. 30, 2019
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 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, 2018 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, 2018 (the “2018 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 2018 Annual Report. 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 real estate joint ventures and other limited partnership interests (“investee”) 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 in net investment income 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. 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.
Reclassification	Reclassifications
New Accounting Pronouncements	Recent Accounting Pronouncements Changes to GAAP are established by the Financial Accounting Standards Board (“FASB”) in the form of accounting standards updates (“ASUs”) to the FASB Accounting Standards Codification. The Company considers the applicability and impact of all ASUs. The following tables provide a description of new ASUs issued by the FASB and the impact of the adoption on the Company’s consolidated financial statements. Adoption of New Accounting Pronouncements Except as noted below, the ASUs adopted by the Company effective January 1, 2019 did not have a material impact on its consolidated financial statements. Standard Description Effective Date and Method of Adoption Impact on Financial Statements ASU 2017-12, Derivatives and Hedging (Topic 815): Targeted Improvements to Accounting for Hedging Activities, as clarified and amended by ASU 2019-04, Codification Improvements to Topic 326, Financial Instruments—Credit Losses, Topic 815, Derivatives and Hedging, and Topic 825, Financial Instruments The new guidance simplifies the application of hedge accounting in certain situations and amends the hedge accounting model to enable entities to better portray the economics of their risk management activities in their financial statements. January 1, 2019. The Company adopted using a modified retrospective approach. The adoption of the guidance resulted in an $18 million, net of income tax, increase to accumulated other comprehensive income (loss) (“AOCI”) with a corresponding decrease to retained earnings due to the reclassification of hedge ineffectiveness for cash flow hedging relationships existing as of January 1, 2019. The Company has included the expanded disclosures within Note 7. ASU 2016-02, Leases (Topic 842), as clarified and amended by ASU 2018-10, Codification Improvements to Topic 842, Leases, ASU 2018-11 , Leases (Topic 842): Targeted Improvements, and ASU 2018-20 , Leases (Topic 842): Narrow-Scope Improvements for Lessors The new guidance requires a lessee to recognize assets and liabilities for leases with lease terms of more than 12 months. Leases are classified as finance or operating leases and both types of leases are recognized on the balance sheet. Lessor accounting remains largely unchanged from previous guidance except for certain targeted changes. The new guidance also requires new qualitative and quantitative disclosures. In July 2018, two amendments to the new guidance were issued. The amendments provide the option to adopt the new guidance prospectively without adjusting comparative periods. Also, the amendments provide lessors with a practical expedient not to separate lease and non-lease components for certain operating leases. In December 2018, an amendment was issued to clarify lessor accounting relating to taxes, certain lessor’s costs and variable payments related to both lease and non-lease components. January 1, 2019. The Company adopted using a modified retrospective approach. The Company elected the package of practical expedients allowed under the transition guidance. This allowed the Company to carry forward its historical lease classification. In addition, the Company elected all other practical expedients that were allowed under the new guidance and were applicable, including the practical expedient to combine lease and non-lease components into one lease component for certain real estate leases. The adoption of this guidance resulted in the recording of additional net right-of-use (“ROU”) assets and lease liabilities of approximately $1.5 billion and $1.7 billion, respectively, as of January 1, 2019. The reduction of the ROU assets was a result of adjustments for prepaid/deferred rent, unamortized initial direct costs and impairment of certain ROU assets based on the net present value of the remaining minimum lease payments and sublease revenues. In addition, retained earnings increased by $95 million, net of income tax, as a result of the recognition of deferred gains on previous sale leaseback transactions. The guidance did not have a material impact on the Company’s consolidated net income and cash flows. The Company has included expanded disclosures on the consolidated balance sheets and in Notes 6 and 9.
Investments	Maturities of Fixed Maturity Securities AFS Actual maturities may differ from contractual maturities due to the exercise of call or prepayment options. Fixed maturity securities AFS 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. Past Due and Nonaccrual Mortgage Loans Leased Real Estate Investments - Operating Leases 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 derivative’s 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 • Derivatives held within 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 the same line item as the earnings effect of the hedged item. The carrying value of the hedged recognized asset or liability is adjusted for changes in its estimated fair value due to the hedged risk. • 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 - in OCI and reclassified into the statement of operations when the Company’s earnings are affected by the variability in cash flows of the hedged item. • Net investment in a foreign operation (“NIFO”) hedge - in OCI, consistent with the translation adjustment for the hedged net investment in the foreign operation. 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. 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 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 occurring, 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 of occurring are recognized immediately in net investment 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 issues certain products, which include variable annuities, 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). 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. 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. 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. 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. The Company manages its credit risk related to derivatives by entering into transactions with creditworthy counterparties and establishing and monitoring exposure limits. The Company’s OTC-bilateral derivative transactions are governed by ISDA Master Agreements which provide for legally enforceable set-off and close-out netting of exposures to specific counterparties in the event of early termination of a transaction, which includes, but is not limited to, events of default and bankruptcy. In the event of an early termination, the Company is permitted to set off receivables from the counterparty against payables to the same counterparty arising out of all included transactions. Substantially all of the Company’s ISDA Master Agreements also include Credit Support Annex provisions which require both the pledging and accepting of collateral in connection with its OTC-bilateral derivatives. The Company’s OTC-cleared derivatives are effected through central clearing counterparties and its exchange-traded derivatives are effected through regulated exchanges. Such positions are marked to market and margined on a daily basis (both initial margin and variation margin), and the Company has minimal exposure to credit-related losses in the event of nonperformance by counterparties to such derivatives. See Note 8 for a description of the impact of credit risk on the valuation of derivatives.
Employee Benefit Plans	Certain subsidiaries of MetLife, Inc. sponsor and/or administer a U.S. qualified and various U.S. and non-U.S. nonqualified defined benefit pension plans and other postretirement employee benefit plans covering employees who meet specified eligibility requirements. These subsidiaries also provide certain postemployment benefits and certain postretirement medical and life insurance benefits for U.S. and non-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.
Leases	The Company, as lessee, has entered into various lease and sublease agreements for office space and other equipment. At contract inception, the Company determines that an arrangement contains a lease if the contract conveys the right to control the use of an identified asset for a period of time in exchange for consideration. For contracts that contain a lease, the Company recognizes the ROU asset in Other assets and the lease liability in Other liabilities. Leases with an initial term of 12 months or less are not recorded on the balance sheet. ROU assets represent the Company’s right to use an underlying asset for the lease term and lease liabilities represent the Company’s obligation to make lease payments arising from the lease. ROU assets and liabilities are determined using the Company’s incremental borrowing rate based upon information available at commencement date to recognize the present value of lease payments over the lease term. The ROU asset also includes lease payments and excludes lease incentives. Lease terms may include options to extend or terminate the lease and are included in the lease measurement when it is reasonably certain that the Company will exercise that option. The Company has lease agreements with lease and non-lease components. The Company elected the practical expedient to not separate lease and non-lease components and accounted for these items as a single lease component for all asset classes. The majority of the Company’s leases and subleases are operating leases related to office space. The Company recognizes lease expense for operating leases on a straight-line basis over the lease term.

Segment Information (Tables)

Segment Information (Tables)	9 Months Ended
	Sep. 30, 2019
Segment Reporting [Abstract]
Segment Reporting Information, by Segment	Three Months Ended September 30, 2019 U.S. Asia Latin EMEA MetLife Corporate Total Adjustments Total Consolidated (In millions) Revenues Premiums $ 6,903 $ 1,654 $ 703 $ 526 $ 925 $ 35 $ 10,746 $ 35 $ 10,781 Universal life and investment-type product policy fees 264 430 256 117 284 1 1,352 88 1,440 Net investment income 1,760 915 295 73 1,316 114 4,473 150 4,623 Other revenues 224 14 8 13 52 36 347 72 419 Net investment gains (losses) — — — — — — — 161 161 Net derivative gains (losses) — — — — — — — 1,254 1,254 Total revenues 9,151 3,013 1,262 729 2,577 186 16,918 1,760 18,678 Expenses Policyholder benefits and claims and policyholder dividends 6,759 1,264 656 291 1,856 32 10,858 86 10,944 Interest credited to policyholder account balances 507 440 74 25 228 — 1,274 226 1,500 Capitalization of DAC (131 ) (498 ) (102 ) (128 ) (9 ) (3 ) (871 ) (11 ) (882 ) Amortization of DAC and VOBA 121 353 58 128 94 2 756 41 797 Amortization of negative VOBA — (2 ) — (2 ) — — (4 ) — (4 ) Interest expense on debt 3 — — — 2 218 223 — 223 Other expenses 1,004 955 356 341 223 320 3,199 110 3,309 Total expenses 8,263 2,512 1,042 655 2,394 569 15,435 452 15,887 Provision for income tax expense (benefit) 181 152 65 21 34 (192 ) 261 340 601 Adjusted earnings $ 707 $ 349 $ 155 $ 53 $ 149 $ (191 ) 1,222 Adjustments to: Total revenues 1,760 Total expenses (452 ) Provision for income tax (expense) benefit (340 ) Net income (loss) $ 2,190 $ 2,190 Three Months Ended September 30, 2018 U.S. Asia Latin EMEA MetLife Corporate Total Adjustments Total Consolidated (In millions) Revenues Premiums $ 6,431 $ 1,689 $ 692 $ 514 $ 949 $ (33 ) $ 10,242 $ — $ 10,242 Universal life and investment-type product policy fees 252 428 229 105 286 — 1,300 43 1,343 Net investment income 1,787 830 339 73 1,375 58 4,462 24 4,486 Other revenues 206 12 7 15 70 86 396 83 479 Net investment gains (losses) — — — — — — — 117 117 Net derivative gains (losses) — — — — — — — (378 ) (378 ) Total revenues 8,676 2,959 1,267 707 2,680 111 16,400 (111 ) 16,289 Expenses Policyholder benefits and claims and policyholder dividends 6,219 1,354 670 281 1,766 (38 ) 10,252 155 10,407 Interest credited to policyholder account balances 457 381 102 24 238 — 1,202 132 1,334 Capitalization of DAC (116 ) (478 ) (97 ) (109 ) (8 ) (2 ) (810 ) — (810 ) Amortization of DAC and VOBA 128 366 5 110 13 2 624 108 732 Amortization of negative VOBA — (4 ) (1 ) (2 ) — — (7 ) — (7 ) Interest expense on debt 2 — 2 — 2 246 252 15 267 Other expenses 982 943 351 333 264 314 3,187 100 3,287 Total expenses 7,672 2,562 1,032 637 2,275 522 14,700 510 15,210 Provision for income tax expense (benefit) 209 131 65 15 78 (206 ) 292 (128 ) 164 Adjusted earnings $ 795 $ 266 $ 170 $ 55 $ 327 $ (205 ) 1,408 Adjustments to: Total revenues (111 ) Total expenses (510 ) Provision for income tax (expense) benefit 128 Net income (loss) $ 915 $ 915 Nine Months Ended September 30, 2019 U.S. Asia Latin EMEA MetLife Holdings Corporate & Other Total Adjustments Total (In millions) Revenues Premiums $ 18,704 $ 4,984 $ 2,122 $ 1,619 $ 2,776 $ 75 $ 30,280 $ 35 $ 30,315 Universal life and investment-type product policy fees 808 1,255 820 325 844 2 4,054 163 4,217 Net investment income 5,274 2,739 951 220 3,941 183 13,308 916 14,224 Other revenues 668 43 31 40 184 212 1,178 213 1,391 Net investment gains (losses) — — — — — — — 237 237 Net derivative gains (losses) — — — — — — — 2,093 2,093 Total revenues 25,454 9,021 3,924 2,204 7,745 472 48,820 3,657 52,477 Expenses Policyholder benefits and claims and policyholder dividends 18,233 3,862 2,043 867 5,207 70 30,282 329 30,611 Interest credited to policyholder account balances 1,512 1,267 254 72 681 — 3,786 1,190 4,976 Capitalization of DAC (372 ) (1,449 ) (296 ) (371 ) (23 ) (9 ) (2,520 ) (11 ) (2,531 ) Amortization of DAC and VOBA 352 972 215 327 237 5 2,108 2 2,110 Amortization of negative VOBA — (18 ) — (6 ) — — (24 ) — (24 ) Interest expense on debt 8 — 2 — 6 715 731 — 731 Other expenses 3,006 2,865 1,074 1,029 687 831 9,492 280 9,772 Total expenses 22,739 7,499 3,292 1,918 6,795 1,612 43,855 1,790 45,645 Provision for income tax expense (benefit) 552 458 184 70 185 (538 ) 911 600 1,511 Adjusted earnings $ 2,163 $ 1,064 $ 448 $ 216 $ 765 $ (602 ) 4,054 Adjustments to: Total revenues 3,657 Total expenses (1,790 ) Provision for income tax (expense) benefit (600 ) Net income (loss) $ 5,321 $ 5,321 Nine Months Ended September 30, 2018 U.S. Asia Latin America EMEA MetLife Holdings Corporate & Other Total Adjustments Total (In millions) Revenues Premiums $ 22,950 $ 5,091 $ 2,079 $ 1,611 $ 2,856 $ (14 ) $ 34,573 $ — $ 34,573 Universal life and investment-type product policy fees 772 1,221 786 324 901 — 4,004 101 4,105 Net investment income 5,168 2,464 942 221 4,056 157 13,008 (304 ) 12,704 Other revenues 613 40 24 51 205 246 1,179 249 1,428 Net investment gains (losses) — — — — — — — (443 ) (443 ) Net derivative gains (losses) — — — — — — — (88 ) (88 ) Total revenues 29,503 8,816 3,831 2,207 8,018 389 52,764 (485 ) 52,279 Expenses Policyholder benefits and claims and policyholder dividends 22,590 3,934 1,976 861 5,022 (38 ) 34,345 252 34,597 Interest credited to policyholder account balances 1,303 1,094 295 75 709 — 3,476 51 3,527 Capitalization of DAC (336 ) (1,438 ) (282 ) (348 ) (28 ) (7 ) (2,439 ) (1 ) (2,440 ) Amortization of DAC and VOBA 357 993 136 324 214 5 2,029 103 2,132 Amortization of negative VOBA — (31 ) (1 ) (12 ) — — (44 ) (1 ) (45 ) Interest expense on debt 8 — 5 — 6 798 817 45 862 Other expenses 2,908 2,871 1,052 1,023 815 805 9,474 336 9,810 Total expenses 26,830 7,423 3,181 1,923 6,738 1,563 47,658 785 48,443 Provision for income tax expense (benefit) 554 437 195 62 248 (599 ) 897 (127 ) 770 Adjusted earnings $ 2,119 $ 956 $ 455 $ 222 $ 1,032 $ (575 ) 4,209 Adjustments to: Total revenues (485 ) Total expenses (785 ) Provision for income tax (expense) benefit 127 Net income (loss) $ 3,066 $ 3,066 The following table presents total assets with respect to the Company’s segments, as well as Corporate & Other, at: September 30, 2019 December 31, 2018 (In millions) U.S. $ 267,428 $ 248,174 Asia 160,798 146,278 Latin America 75,640 70,417 EMEA 26,418 27,829 MetLife Holdings 176,410 166,872 Corporate & Other 36,118 27,968 Total $ 742,812 $ 687,538

Insurance (Tables)

Insurance (Tables)	9 Months Ended
	Sep. 30, 2019
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: September 30, 2019 December 31, 2018 In the At In the At (Dollars in millions) Annuity Contracts: Variable Annuity Guarantees: Total account value (1), (2), (3) $ 63,613 $ 23,703 $ 63,381 $ 23,174 Separate account value (1) $ 40,373 $ 21,940 $ 38,888 $ 21,385 Net amount at risk (2) $ 1,744 (4 ) $ 658 (5 ) $ 3,197 (4 ) $ 511 (5 ) Average attained age of contractholders 67 years 65 years 66 years 64 years Other Annuity Guarantees: Total account value (1), (3) N/A $ 5,616 N/A $ 5,787 Net amount at risk N/A $ 402 (6 ) N/A $ 549 (6 ) Average attained age of contractholders N/A 51 years N/A 50 years September 30, 2019 December 31, 2018 Secondary Paid-Up Secondary Paid-Up (Dollars in millions) Universal and Variable Life Contracts: Total account value (1), (3) $ 11,512 $ 2,970 $ 11,205 $ 3,070 Net amount at risk (7) $ 86,696 $ 14,743 $ 93,028 $ 15,539 Average attained age of policyholders 53 years 64 years 52 years 64 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 interim condensed consolidated balance sheets, from assumed variable annuity guarantees 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. (8) The Company’s guarantee exposure amounts at December 31, 2018 as reported in the 2018 Annual Report have been revised. They conform to the 2019 presentation, which includes certain contracts with guarantees that were previously excluded. They include the following increases from the amounts reported in the 2018 Annual Report: (i) variable annuity guarantees in the event of death: $7.1 billion from $56.2 billion for total account value, $1.5 billion from $37.3 billion for separate account value and $429 million from $2.8 billion for net amount at risk; (ii) variable annuity guarantees at annuitization: $1.5 billion from $21.6 billion for total account value, $1.5 billion from $19.8 billion for separate account value and $28 million from $483 million for net amount at risk; (iii) other annuity guarantees: $4.5 billion from $1.3 billion for total account value and $60 million from $489 million for net amount at risk; and (iv) universal and variable life contract secondary guarantees: $2.3 billion from $8.9 billion for total account value and $28.9 billion from $64.2 billion for net amount at risk. Additionally, the average attained age of contractholders at annuitization for variable annuity guarantees decreased by one year from 65 years and the average attained age of policyholders with universal and variable life contract secondary guarantees decreased by five years from 57 years.
Liabilities for Unpaid Claims and Claim Expenses	Information regarding the liabilities for unpaid claims and claim adjustment expenses was as follows: Nine Months 2019 2018 (In millions) Balance, beginning of period $ 17,788 $ 17,094 Less: Reinsurance recoverables 2,332 2,198 Net balance, beginning of period 15,456 14,896 Incurred related to: Current period 20,236 18,386 Prior periods (1) 146 256 Total incurred 20,382 18,642 Paid related to: Current period (14,203 ) (13,033 ) Prior periods (4,960 ) (4,896 ) Total paid (19,163 ) (17,929 ) Net balance, end of period 16,675 15,609 Add: Reinsurance recoverables 2,392 2,189 Balance, end of period (included in future policy benefits and other policy-related balances) $ 19,067 $ 17,798 __________________ (1) For both the nine months ended September 30, 2019 and 2018 , claims and claim adjustment expenses associated with prior periods increased due to events incurred in prior periods but reported in the current period.

Closed Block (Tables)

Closed Block (Tables)	9 Months Ended
	Sep. 30, 2019
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: September 30, 2019 December 31, 2018 (In millions) Closed Block Liabilities Future policy benefits $ 39,477 $ 40,032 Other policy-related balances 438 317 Policyholder dividends payable 453 431 Policyholder dividend obligation 2,370 428 Deferred income tax liability 61 28 Other liabilities 116 328 Total closed block liabilities 42,915 41,564 Assets Designated to the Closed Block Investments: Fixed maturity securities available-for-sale, at estimated fair value 26,365 25,354 Equity securities, at estimated fair value 63 61 Contractholder-directed equity securities and fair value option securities, at estimated fair value 50 43 Mortgage loans 6,910 6,778 Policy loans 4,493 4,527 Real estate and real estate joint ventures 540 544 Other invested assets 822 643 Total investments 39,243 37,950 Cash and cash equivalents 154 — Accrued investment income 438 443 Premiums, reinsurance and other receivables 66 83 Current income tax recoverable 81 69 Total assets designated to the closed block 39,982 38,545 Excess of closed block liabilities over assets designated to the closed block 2,933 3,019 Amounts included in AOCI: Unrealized investment gains (losses), net of income tax 2,596 1,089 Unrealized gains (losses) on derivatives, net of income tax 169 86 Allocated to policyholder dividend obligation, net of income tax (1,872 ) (338 ) Total amounts included in AOCI 893 837 Maximum future earnings to be recognized from closed block assets and liabilities $ 3,826 $ 3,856
Closed block policyholder dividend obligation	Information regarding the closed block policyholder dividend obligation was as follows: Nine Months Year (In millions) Balance, beginning of period $ 428 $ 2,121 Change in unrealized investment and derivative gains (losses) 1,942 (1,693 ) Balance, end of period $ 2,370 $ 428
Closed block revenues and expenses	Information regarding the closed block revenues and expenses was as follows: Three Months Nine Months 2019 2018 2019 2018 (In millions) Revenues Premiums $ 396 $ 405 $ 1,153 $ 1,202 Net investment income 428 443 1,303 1,318 Net investment gains (losses) 3 7 (2 ) (46 ) Net derivative gains (losses) 11 2 23 12 Total revenues 838 857 2,477 2,486 Expenses Policyholder benefits and claims 564 641 1,666 1,808 Policyholder dividends 229 241 688 723 Other expenses 27 29 84 88 Total expenses 820 911 2,438 2,619 Revenues, net of expenses before provision for income tax expense (benefit) 18 (54 ) 39 (133 ) Provision for income tax expense (benefit) 3 (12 ) 7 (29 ) Revenues, net of expenses and provision for income tax expense (benefit) $ 15 $ (42 ) $ 32 $ (104 )

Investments (Tables)

Investments (Tables)	9 Months Ended
	Sep. 30, 2019
Investments, Debt and Equity Securities [Abstract]
Fixed Maturity Available-for-Sale and Equity Securities	The following table presents the fixed maturity securities AFS by sector. U.S. corporate and foreign corporate sectors include redeemable preferred stock. Residential mortgage-backed securities (“RMBS”) includes Agency, prime, alternative and sub-prime mortgage-backed securities. Asset-backed securities (“ABS”) includes securities collateralized by corporate loans and consumer loans. Municipals includes taxable and tax-exempt revenue bonds and, to a much lesser extent, general obligations of states, municipalities and political subdivisions. Commercial mortgage-backed securities (“CMBS”) primarily includes securities collateralized by multiple properties. RMBS, ABS and CMBS are collectively, “Structured Securities.” September 30, 2019 December 31, 2018 Amortized Gross Unrealized Estimated Amortized Gross Unrealized Estimated Temporary OTTI Temporary OTTI (In millions) U.S. corporate $ 78,243 $ 9,194 $ 323 $ — $ 87,114 $ 77,761 $ 3,467 $ 2,280 $ — $ 78,948 Foreign government 58,318 9,663 434 — 67,547 56,353 6,406 471 — 62,288 Foreign corporate 58,699 5,523 1,122 — 63,100 56,290 2,438 2,025 — 56,703 U.S. government and agency 34,963 5,853 14 — 40,802 37,030 2,756 464 — 39,322 RMBS 27,889 1,728 63 (37 ) 29,591 27,409 920 394 (26 ) 27,961 ABS 14,319 111 85 — 14,345 12,552 74 153 1 12,472 Municipals 10,600 2,348 6 — 12,942 10,376 1,228 71 — 11,533 CMBS 10,099 544 35 — 10,608 9,045 115 122 — 9,038 Total fixed maturity securities AFS $ 293,130 $ 34,964 $ 2,082 $ (37 ) $ 326,049 $ 286,816 $ 17,404 $ 5,980 $ (25 ) $ 298,265 __________________ (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).” Equity securities are summarized as follows at: September 30, 2019 December 31, 2018 Estimated Fair Value % of Total Estimated Fair Value % of Total (Dollars in millions) Common stock $ 938 69.9 % $ 1,037 72.0 % Non-redeemable preferred stock 403 30.1 403 28.0 Total equity securities $ 1,341 100.0 % $ 1,440 100.0 %
Available-for-sale fixed maturity securities by contractual maturity date	The amortized cost and estimated fair value of fixed maturity securities AFS, by contractual maturity date, were as follows at September 30, 2019 : Due in One Due After Due After Five Years Through Ten Years Due After Ten Years Structured Securities Total Fixed Maturity Securities AFS (In millions) Amortized cost $ 17,217 $ 48,060 $ 58,619 $ 116,927 $ 52,307 $ 293,130 Estimated fair value $ 17,280 $ 50,027 $ 63,869 $ 140,329 $ 54,544 $ 326,049
Continuous Gross Unrealized Loss and OTTI Loss for Fixed Maturity Securities Available-for-Sale	The following table presents the estimated fair value and gross unrealized losses of fixed maturity securities AFS in an unrealized loss position by sector and aggregated by length of time that the securities have been in a continuous unrealized loss position at: September 30, 2019 December 31, 2018 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) U.S. corporate $ 3,320 $ 110 $ 2,361 $ 213 $ 32,430 $ 1,663 $ 5,826 $ 617 Foreign government 2,504 314 1,312 120 4,392 243 2,902 228 Foreign corporate 4,079 199 7,398 923 19,564 1,230 5,765 795 U.S. government and agency 1,860 11 149 3 6,813 58 8,937 406 RMBS 1,912 11 813 15 6,506 120 6,423 248 ABS 4,949 39 3,083 46 8,230 138 392 16 Municipals 205 3 31 3 1,380 46 349 25 CMBS 1,138 5 438 30 3,893 67 707 55 Total fixed maturity securities AFS $ 19,967 $ 692 $ 15,585 $ 1,353 $ 83,208 $ 3,565 $ 31,301 $ 2,390 Total number of securities in an unrealized loss position 1,869 1,414 6,913 2,335
Disclosure of Mortgage Loans Net of Valuation Allowance	Mortgage loans are summarized as follows at: September 30, 2019 December 31, 2018 Carrying Value % of Carrying Value % of (Dollars in millions) Mortgage loans: Commercial $ 49,898 63.2 % $ 48,463 64.0 % Agricultural 15,752 19.9 14,905 19.7 Residential 13,441 17.0 12,427 16.4 Total recorded investment 79,091 100.1 75,795 100.1 Valuation allowances (350 ) (0.4 ) (342 ) (0.5 ) Subtotal mortgage loans, net 78,741 99.7 75,453 99.6 Residential — FVO (1) 218 0.3 299 0.4 Total mortgage loans, net $ 78,959 100.0 % $ 75,752 100.0 % __________________ (1) Information on residential mortgage loans — FVO is presented in Note 8 . The Company elects the FVO for certain residential mortgage loans that are managed on a total return basis.
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) September 30, 2019 Commercial $ — $ — $ — $ — $ — $ 49,898 $ 245 $ — Agricultural 13 13 1 195 194 15,545 47 206 Residential — — — 517 414 13,027 57 414 Total $ 13 $ 13 $ 1 $ 712 $ 608 $ 78,470 $ 349 $ 620 December 31, 2018 Commercial $ — $ — $ — $ — $ — $ 48,463 $ 238 $ — Agricultural 31 31 3 169 169 14,705 43 197 Residential — — — 431 386 12,041 58 386 Total $ 31 $ 31 $ 3 $ 600 $ 555 $ 75,209 $ 339 $ 583
Allowance for Loan and Lease Losses, Provision for Loss, Net	The changes in the valuation allowance, by portfolio segment, were as follows: Nine Months 2019 2018 Commercial Agricultural Residential Total Commercial Agricultural Residential Total (In millions) Balance, beginning of period $ 238 $ 46 $ 58 $ 342 $ 214 $ 41 $ 59 $ 314 Provision (release) 7 7 6 20 18 1 9 28 Charge-offs, net of recoveries — (5 ) (7 ) (12 ) — — (6 ) (6 ) Balance, end of period $ 245 $ 48 $ 57 $ 350 $ 232 $ 42 $ 62 $ 336
Schedule of Past Due and Non Accrual Mortgage Loans	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 September 30, 2019 December 31, 2018 September 30, 2019 December 31, 2018 September 30, 2019 December 31, 2018 (In millions) Commercial $ — $ 9 $ — $ 9 $ 176 $ 176 Agricultural 202 204 129 109 88 105 Residential 434 471 37 35 397 436 Total $ 636 $ 684 $ 166 $ 153 $ 661 $ 717
Disclosure Real Estate and Real Estate Joint Ventures	Real estate investments, by income type, as well as income earned, are as follows at and for the periods indicated: September 30, 2019 December 31, 2018 Three Months Nine Months 2019 2018 2019 2018 Carrying Value Income (In millions) Leased real estate investments $ 4,516 $ 4,132 $ 103 $ 103 $ 285 $ 311 Other real estate investments 488 461 45 45 135 135 Real estate joint ventures 5,242 5,105 33 27 70 92 Total real estate and real estate joint ventures $ 10,246 $ 9,698 $ 181 $ 175 $ 490 $ 538
Schedule of Operating Leases by Property Type	Leased real estate investments and income earned, by property type, are as follows at and for the periods indicated: September 30, 2019 December 31, 2018 Three Months Nine Months 2019 2018 2019 2018 Carrying Value Income (In millions) Leased real estate investments: Office $ 2,098 $ 1,999 $ 45 $ 42 $ 131 $ 131 Retail 1,151 1,006 32 21 81 72 Apartment 255 253 6 23 16 60 Industrial 304 223 11 10 33 29 Land 533 489 5 5 15 14 Hotel 94 94 2 1 5 1 Other 81 68 2 1 4 4 Total leased real estate investments $ 4,516 $ 4,132 $ 103 $ 103 $ 285 $ 311
Components of Leveraged and Direct Financing Leases	Investment in leveraged and direct financing leases consisted of the following at: September 30, 2019 December 31, 2018 Leveraged Leases Direct Financing Leases Leveraged Leases Direct Financing Leases (In millions) Lease receivables, net (1) $ 700 $ 1,891 $ 715 $ 1,855 Estimated residual values 786 42 807 42 Subtotal 1,486 1,933 1,522 1,897 Unearned income (378 ) (689 ) (414 ) (705 ) Investment in leases $ 1,108 $ 1,244 $ 1,108 $ 1,192 __________________ (1) Future contractual receipts under direct financing leases at September 30, 2019 are $30 million for the remainder of 2019, $104 million in 2020, $102 million in 2021, $124 million in 2022, $109 million in 2023, $1.4 billion thereafter, and in total $1.9 billion .
Schedule of Net Income From Investment In Leveraged and Direct Financing Leases	The components of income from investment in leveraged and direct financing leases, excluding net investment gains (losses), were as follows: Three Months Nine Months 2019 2018 2019 2018 Leveraged Leases Direct Financing Leases Leveraged Leases Direct Financing Leases Leveraged Leases Direct Financing Leases Leveraged Leases Direct Financing Leases (In millions) Lease investment income $ 12 $ 28 $ 12 $ 27 $ 36 $ 75 $ 35 $ 74 Less: Income tax expense 3 6 2 6 8 16 7 16 Lease investment income, net of income tax $ 9 $ 22 $ 10 $ 21 $ 28 $ 59 $ 28 $ 58
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: September 30, 2019 December 31, 2018 (In millions) Fixed maturity securities AFS $ 32,849 $ 11,356 Fixed maturity securities AFS with noncredit OTTI losses included in AOCI 37 25 Total fixed maturity securities AFS 32,886 11,381 Derivatives 3,675 2,127 Other 312 290 Subtotal 36,873 13,798 Amounts allocated from: Future policy benefits (1,713 ) 31 DAC, VOBA and DSI (3,012 ) (1,231 ) Policyholder dividend obligation (2,370 ) (428 ) Subtotal (7,095 ) (1,628 ) Deferred income tax benefit (expense) related to noncredit OTTI losses recognized in AOCI (5 ) (3 ) Deferred income tax benefit (expense) (7,427 ) (3,502 ) Net unrealized investment gains (losses) 22,346 8,665 Net unrealized investment gains (losses) attributable to noncontrolling interests (16 ) (10 ) Net unrealized investment gains (losses) attributable to MetLife, Inc. $ 22,330 $ 8,655 The changes in net unrealized investment gains (losses) were as follows: Nine Months (In millions) Balance, beginning of period $ 8,655 Cumulative effects of changes in accounting principles, net of income tax (Note 1) 21 Fixed maturity securities AFS on which noncredit OTTI losses have been recognized 12 Unrealized investment gains (losses) during the period 23,037 Unrealized investment gains (losses) relating to: Future policy benefits (1,744 ) DAC, VOBA and DSI (1,781 ) Policyholder dividend obligation (1,942 ) Deferred income tax benefit (expense) related to noncredit OTTI losses recognized in AOCI (2 ) Deferred income tax benefit (expense) (3,920 ) Net unrealized investment gains (losses) 22,336 Net unrealized investment gains (losses) attributable to noncontrolling interests (6 ) Balance, end of period $ 22,330 Change in net unrealized investment gains (losses) $ 13,681 Change in net unrealized investment gains (losses) attributable to noncontrolling interests (6 ) Change in net unrealized investment gains (losses) attributable to MetLife, Inc. $ 13,675
Securities Lending and Repurchase Agreements	A summary of the securities lending and repurchase agreements transactions is as follows: September 30, 2019 December 31, 2018 Securities on Loan (1) Securities on Loan (1) Amortized Cost Estimated Fair Value Cash Collateral Received from Counterparties (2), (3) Reinvestment Portfolio at Estimated Fair Value Amortized Cost Estimated Fair Value Cash Collateral Received from Counterparties (2), (3) Reinvestment Portfolio at Estimated Fair Value (In millions) Securities lending $ 15,994 $ 18,688 $ 19,001 $ 19,415 $ 16,969 $ 17,724 $ 18,005 $ 18,074 Repurchase agreements $ 1,609 $ 1,881 $ 1,833 $ 1,868 $ 1,033 $ 1,093 $ 1,067 $ 1,069 __________________ (1) Securities on loan in connection with securities lending are included within fixed maturities securities AFS, short-term investments and cash equivalents and securities on loan in connection with repurchase agreements are included within fixed maturities securities AFS, short-term investments and cash equivalents. (2) In connection with securities lending, in addition to cash collateral received, the Company received from counterparties security collateral of $105 million and $78 million at September 30, 2019 and December 31, 2018 , respectively , which may not be sold or re-pledged, unless the counterparty is in default, and is not reflected on the consolidated financial statements. (3) The securities lending liability for cash collateral is included within payables for collateral under securities loaned and other transactions, and the repurchase agreements liability for cash collateral is included within payables for collateral under securities loaned and other transactions and other liabilities. A summary of the remaining contractual maturities of securities lending agreements and repurchase agreements is as follows: September 30, 2019 December 31, 2018 Remaining Maturities Remaining Maturities Open (1) 1 Month or Less Over 1 to 6 Months Total Open (1) 1 Month or Less Over 1 to 6 Months Total (In millions) Cash collateral liability by loaned security type: Securities lending: U.S. government and agency $ 3,968 $ 7,903 $ 6,046 $ 17,917 $ 2,736 $ 8,995 $ 5,220 $ 16,951 Foreign government — 287 730 1,017 — 214 761 975 Agency RMBS — 67 — 67 — 79 — 79 Total $ 3,968 $ 8,257 $ 6,776 $ 19,001 $ 2,736 $ 9,288 $ 5,981 $ 18,005 Repurchase agreements: U.S. government and agency $ — $ 1,760 $ — $ 1,760 $ — $ 1,000 $ — $ 1,000 All other corporate and government — 34 39 73 — — 67 67 Total $ — $ 1,794 $ 39 $ 1,833 $ — $ 1,000 $ 67 $ 1,067 __________________ (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. The estimated fair value of the securities on loan related to this cash collateral at September 30, 2019 was $3.9 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.
Federal Home Loan Bank, cash advances	The cash advance liability by loaned security type and remaining contractual maturities of the agreements was as follows at: September 30, 2019 December 31, 2018 Remaining Maturities Remaining Maturities 1 Month or Less Over 1 to 6 Months 6 Months to 1 Year Total 1 Month or Less Over 1 to 6 Months 6 Months to 1 Year Total (In millions) Cash advance liability by loaned security type: Municipals $ 250 $ 475 $ 75 $ 800 $ 150 $ 650 $ — $ 800
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: September 30, 2019 December 31, 2018 (In millions) Invested assets on deposit (regulatory deposits) $ 1,976 $ 1,788 Invested assets held in trust (collateral financing arrangement and reinsurance agreements) 3,017 2,971 Invested assets pledged as collateral (1) 24,442 24,168 Total invested assets on deposit, held in trust and pledged as collateral $ 29,435 $ 28,927 __________________ (1) The Company has pledged invested assets in connection with various agreements and transactions, including funding agreements, secured debt, a collateral financing arrangement (see Notes 4, 12 and 13 of the Notes to the Consolidated Financial Statements included in the 2018 Annual Report) and derivative transactions (see Note 7 ).
Components of Net Investment Income	The components of net investment income were as follows: Three Months Nine Months 2019 2018 2019 2018 (In millions) Investment income: Fixed maturity securities AFS $ 2,924 $ 3,056 $ 8,887 $ 8,966 Equity securities 13 15 45 46 FVO Securities (1) 59 11 152 25 Mortgage loans 930 859 2,785 2,466 Policy loans 129 130 386 381 Real estate and real estate joint ventures 181 175 490 538 Other limited partnership interests 277 227 643 554 Cash, cash equivalents and short-term investments 117 112 358 279 Operating joint ventures 10 2 66 34 Other 95 83 244 283 Subtotal 4,735 4,670 14,056 13,572 Less: Investment expenses 362 333 1,079 950 Subtotal, net 4,373 4,337 12,977 12,622 Unit-linked investments (1) 250 149 1,247 82 Net investment income $ 4,623 $ 4,486 $ 14,224 $ 12,704 __________________ (1) Changes in estimated fair value subsequent to purchase for investments still held as of the end of the respective periods included in net investment income were principally from contractholder-directed equity securities supporting unit-linked variable annuity type liabilities (“Unit-linked investments”), and were $185 million and $850 million for the three months and nine months ended September 30, 2019 , respectively, and $109 million and ($59) million for the three months and nine months ended September 30, 2018 , respectively.
Components of Net Investment Gains (Losses)	The components of net investment gains (losses) were as follows: Three Months Nine Months 2019 2018 2019 2018 (In millions) Total gains (losses) on fixed maturity securities AFS: Total OTTI losses recognized — by sector and industry: U.S. and foreign corporate securities — by industry: Consumer $ — $ (1 ) $ — $ (1 ) Finance (1 ) (7 ) (1 ) (7 ) Industrial (8 ) — (16 ) — Total U.S. and foreign corporate securities (9 ) (8 ) (17 ) (8 ) Foreign government (11 ) (9 ) (11 ) (9 ) RMBS — — (2 ) — OTTI losses on fixed maturity securities AFS recognized in earnings (20 ) (17 ) (30 ) (17 ) Fixed maturity securities AFS — net gains (losses) on sales and disposals 102 123 226 (18 ) Total gains (losses) on fixed maturity securities AFS 82 106 196 (35 ) Total gains (losses) on equity securities: Equity securities — net gains (losses) on sales and disposals 4 (58 ) 51 58 Change in estimated fair value of equity securities (1) 13 76 71 (37 ) Total gains (losses) on equity securities 17 18 122 21 Mortgage loans (16 ) 4 (17 ) (32 ) Real estate and real estate joint ventures 96 40 102 154 Other limited partnership interests 3 1 3 9 Other (2), (3) (31 ) 12 (141 ) (176 ) Subtotal 151 181 265 (59 ) Change in estimated fair value of other limited partnership interests and real estate joint ventures (1 ) 12 (13 ) 6 Non-investment portfolio gains (losses) (4) 11 (76 ) (15 ) (390 ) Subtotal 10 (64 ) (28 ) (384 ) Total net investment gains (losses) $ 161 $ 117 $ 237 $ (443 ) __________________ (1) Changes in estimated fair value subsequent to purchase for equity securities still held as of the end of the period included in net investment gains (losses) were $27 million and $111 million for the three months and nine months ended September 30, 2019 , respectively, and $15 million and $12 million f or the three months and nine months ended September 30, 2018 , respectively. (2) Other gains (losses) included tax credit partnership impairment losses of $92 million and a renewable energy partnership disposal gain of $46 million for the nine months ended September 30, 2019 . (3) Other gains (losses) included renewable energy partnership disposal losses of $83 million and leveraged lease impairment losses of $105 million for the nine months ended September 30, 2018 . (4) Non-investment portfolio gains (losses) for the nine months ended September 30, 2018 , included a loss of $327 million , which represents both the change in estimated fair value of Brighthouse Financial, Inc. common stock (“FVO Brighthouse Common Stock”) held by the Company through date of disposal and the loss on disposal in June 2018.
Proceeds From Sales Or Disposals Of Fixed Maturity and the Components Of Fixed Maturity Securities Net Investment Gains And Losses	Sales of securities are determined on a specific identification basis. Proceeds from sales or disposals and the components of net investment gains (losses) were as shown in the table below: Three Months Nine Months 2019 2018 2019 2018 (In millions) Proceeds $ 9,510 $ 19,003 $ 39,230 $ 58,256 Gross investment gains $ 165 $ 234 $ 632 $ 489 Gross investment losses (63 ) (111 ) (406 ) (507 ) OTTI losses (20 ) (17 ) (30 ) (17 ) Net investment gains (losses) $ 82 $ 106 $ 196 $ (35 )
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 AFS still held for which a portion of the OTTI loss was recognized in OCI: Three Months Nine Months 2019 2018 2019 2018 (In millions) Balance, beginning of period $ 77 $ 111 $ 89 $ 138 Sales (maturities, pay downs or prepayments) of securities previously impaired as credit loss OTTI (3 ) (4 ) (14 ) (30 ) Increase in cash flows — accretion of previous credit loss OTTI — — (1 ) (1 ) Balance, end of period $ 74 $ 107 $ 74 $ 107
Agricultural Mortgage Loans
Accounts, Notes, Loans and Financing Receivable [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: September 30, 2019 December 31, 2018 Recorded % of Recorded % of (Dollars in millions) Loan-to-value ratios: Less than 65% $ 14,711 93.4 % $ 13,704 92.0 % 65% to 75% 952 6.0 1,145 7.7 76% to 80% 78 0.5 33 0.2 Greater than 80% 11 0.1 23 0.1 Total $ 15,752 100.0 % $ 14,905 100.0 %
Residential Mortgage Loans
Accounts, Notes, Loans and Financing Receivable [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: September 30, 2019 December 31, 2018 Recorded % of Recorded % of (Dollars in millions) Performance indicators: Performing $ 13,007 96.8 % $ 11,956 96.2 % Nonperforming (1) 434 3.2 471 3.8 Total $ 13,441 100.0 % $ 12,427 100.0 % __________________ (1) Includes residential mortgage loans in process of foreclosure of $118 million a nd $140 million at September 30, 2019 and December 31, 2018 , respectively.
Commercial Mortgage Loans
Accounts, Notes, Loans and Financing Receivable [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) September 30, 2019 Loan-to-value ratios: Less than 65% $ 41,317 $ 754 $ 512 $ 42,583 85.3 % $ 44,529 85.7 % 65% to 75% 5,708 54 208 5,970 12.0 6,150 11.8 76% to 80% 368 17 265 650 1.3 634 1.2 Greater than 80% 461 234 — 695 1.4 671 1.3 Total $ 47,854 $ 1,059 $ 985 $ 49,898 100.0 % $ 51,984 100.0 % December 31, 2018 Loan-to-value ratios: Less than 65% $ 40,360 $ 827 $ 101 $ 41,288 85.2 % $ 41,599 85.3 % 65% to 75% 5,790 — 25 5,815 12.0 5,849 12.0 76% to 80% 423 209 56 688 1.4 664 1.4 Greater than 80% 496 176 — 672 1.4 635 1.3 Total $ 47,069 $ 1,212 $ 182 $ 48,463 100.0 % $ 48,747 100.0 %
Variable Interest Entity, Primary Beneficiary
Accounts, Notes, Loans and Financing Receivable [Line Items]
Schedule of Variable Interest Entities	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: September 30, 2019 December 31, 2018 Total Total Total Total (In millions) Renewable energy partnership (1) $ 101 $ — $ 102 $ — Investment funds (2) 162 1 79 1 Other investments (1) 20 5 21 5 Total $ 283 $ 6 $ 202 $ 6 __________________ (1) Assets of the renewable energy partnership and other investments primarily consisted of other invested assets. (2) Assets of the investment funds primarily consisted of other invested assets at September 30, 2019 and cash and cash equivalents at December 31, 2018 .
Variable Interest Entity, Not Primary Beneficiary
Accounts, Notes, Loans and Financing Receivable [Line Items]
Schedule of Variable Interest Entities	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: September 30, 2019 December 31, 2018 Carrying Maximum Carrying Maximum (In millions) Fixed maturity securities AFS: Structured Securities (2) $ 52,710 $ 52,710 $ 47,874 $ 47,874 U.S. and foreign corporate 1,568 1,568 932 932 Foreign government 136 136 — — Other limited partnership interests 6,357 11,498 5,641 9,888 Other invested assets 1,528 1,662 1,906 2,063 Other investments 428 430 296 300 Total $ 62,727 $ 68,004 $ 56,649 $ 61,057 __________________ (1) The maximum exposure to loss relating to fixed maturity 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 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 $12 million and $94 million at September 30, 2019 and December 31, 2018 , 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.

Derivatives (Tables)

Derivatives (Tables)	9 Months Ended
	Sep. 30, 2019
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: September 30, 2019 December 31, 2018 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 $ 2,305 $ 2,847 $ 3 $ 2,446 $ 2,197 $ 2 Foreign currency swaps Foreign currency exchange rate 1,155 72 — 1,233 54 — Foreign currency forwards Foreign currency exchange rate 2,396 13 16 2,140 28 18 Subtotal 5,856 2,932 19 5,819 2,279 20 Cash flow hedges: Interest rate swaps Interest rate 3,724 200 — 3,515 143 1 Interest rate forwards Interest rate 6,983 242 16 3,022 — 216 Foreign currency swaps Foreign currency exchange rate 35,668 2,449 1,666 35,931 1,796 1,831 Subtotal 46,375 2,891 1,682 42,468 1,939 2,048 NIFO hedges: Foreign currency forwards Foreign currency exchange rate 436 18 1 960 4 27 Currency options Foreign currency exchange rate 3,950 27 90 5,137 3 202 Subtotal 4,386 45 91 6,097 7 229 Total qualifying hedges 56,617 5,868 1,792 54,384 4,225 2,297 Derivatives Not Designated or Not Qualifying as Hedging Instruments: Interest rate swaps Interest rate 56,457 3,160 194 54,891 1,796 175 Interest rate floors Interest rate 12,701 212 — 12,701 102 — Interest rate caps Interest rate 55,638 14 6 54,575 154 1 Interest rate futures Interest rate 1,967 4 1 2,353 1 3 Interest rate options Interest rate 29,919 1,542 — 26,690 416 — Interest rate forwards Interest rate 235 15 — 234 1 15 Interest rate total return swaps Interest rate 1,048 48 8 1,048 33 2 Synthetic GICs Interest rate 28,098 — — 25,700 — — Foreign currency swaps Foreign currency exchange rate 13,235 920 498 11,388 884 458 Foreign currency forwards Foreign currency exchange rate 13,213 111 296 13,417 198 213 Currency futures Foreign currency exchange rate 891 — 3 847 4 — Currency options Foreign currency exchange rate 1,861 1 — 2,040 7 — Credit default swaps — purchased Credit 2,635 9 84 1,903 25 39 Credit default swaps — written Credit 11,583 231 2 11,391 95 13 Equity futures Equity market 4,128 7 16 2,992 13 77 Equity index options Equity market 28,783 759 684 27,707 884 550 Equity variance swaps Equity market 2,292 41 94 2,269 40 87 Equity total return swaps Equity market 836 3 2 929 91 — Total non-designated or nonqualifying derivatives 265,520 7,077 1,888 253,075 4,744 1,633 Total $ 322,137 $ 12,945 $ 3,680 $ 307,459 $ 8,969 $ 3,930
Components of Net Derivatives Gains (Losses)	Three Months Ended September 30, 2019 Net Investment Income Net Investment Gains (Losses) Net Derivative Gains (Losses) Policyholder Benefits and Claims Interest Credited to Policyholder Account Balances Other Expenses OCI (In millions) Gain (Loss) on Fair Value Hedges: Interest rate derivatives: Derivatives designated as hedging instruments (1) $ (1 ) $ — $ — $ 223 $ 1 $ — N/A Hedged items — — — (237 ) — — N/A Foreign currency exchange rate derivatives: Derivatives designated as hedging instruments (1) 37 (6 ) — — — — N/A Hedged items (30 ) 5 — — — — N/A Amount excluded from the assessment of hedge effectiveness — (16 ) — — — — N/A Subtotal 6 (17 ) — (14 ) 1 — N/A Gain (Loss) on Cash Flow Hedges: Interest rate derivatives: (1) Amount of gains (losses) deferred in AOCI N/A N/A N/A N/A N/A N/A $ 526 Amount of gains (losses) reclassified from AOCI into income 5 1 — — — 1 (7 ) Foreign currency exchange rate derivatives: (1) Amount of gains (losses) deferred in AOCI N/A N/A N/A N/A N/A N/A 132 Amount of gains (losses) reclassified from AOCI into income — (344 ) — — — — 344 Foreign currency transaction gains (losses) on hedged items — 336 — — — — — Credit derivatives: (1) Amount of gains (losses) deferred in AOCI N/A N/A N/A N/A N/A N/A — Amount of gains (losses) reclassified from AOCI into income — — — — — — — Subtotal 5 (7 ) — — — 1 995 Gain (Loss) on NIFO Hedges: Foreign currency exchange rate derivatives (1) N/A N/A N/A N/A N/A N/A 25 Non-derivative hedging instruments N/A N/A N/A N/A N/A N/A 1 Subtotal N/A N/A N/A N/A N/A N/A 26 Gain (Loss) on Derivatives Not Designated or Not Qualifying as Hedging Instruments: Interest rate derivatives (1) (2 ) — 1,298 46 — — N/A Foreign currency exchange rate derivatives (1) — — 110 (3 ) — — N/A Credit derivatives — purchased (1) — — (5 ) — — — N/A Credit derivatives — written (1) — — (4 ) — — — N/A Equity derivatives (1) — — (51 ) (7 ) — — N/A Foreign currency transaction gains (losses) on hedged items — — (7 ) — — — N/A Subtotal (2 ) — 1,341 36 — — N/A Earned income on derivatives 66 — 131 35 (42 ) — — Embedded derivatives (2) N/A N/A (218 ) — N/A N/A N/A Total $ 75 $ (24 ) $ 1,254 $ 57 $ (41 ) $ 1 $ 1,021 Three Months Ended September 30, 2018 Net Investment Income Net Investment Gains (Losses) Net Derivative Gains (Losses) Policyholder Benefits and Claims Interest Credited to Policyholder Account Balances Other Expenses OCI (In millions) Gain (Loss) on Fair Value Hedges: Interest rate derivatives: Derivatives designated as hedging instruments (1) $ — $ — $ (107 ) $ — $ — $ — N/A Hedged items — — 108 — — — N/A Foreign currency exchange rate derivatives: Derivatives designated as hedging instruments (1) — — (56 ) — — — N/A Hedged items — — 48 — — — N/A Amount excluded from the assessment of hedge effectiveness — — (7 ) — — — N/A Subtotal — — (14 ) — — — N/A Gain (Loss) on Cash Flow Hedges: Interest rate derivatives: (1) Amount of gains (losses) deferred in AOCI N/A N/A N/A N/A N/A N/A $ (177 ) Amount of gains (losses) reclassified from AOCI into income 5 — (2 ) — — — (3 ) Foreign currency exchange rate derivatives: (1) Amount of gains (losses) deferred in AOCI N/A N/A N/A N/A N/A N/A (118 ) Amount of gains (losses) reclassified from AOCI into income (1 ) — (6 ) — — — 7 Foreign currency transaction gains (losses) on hedged items — — 11 — — — — Credit derivatives: (1) Amount of gains (losses) deferred in AOCI N/A N/A N/A N/A N/A N/A — Amount of gains (losses) reclassified from AOCI into income — — — — — — — Subtotal 4 — 3 — — — (291 ) Gain (Loss) on NIFO Hedges: Foreign currency exchange rate derivatives (1) N/A N/A N/A N/A N/A N/A 4 Non-derivative hedging instruments N/A N/A N/A N/A N/A N/A — Subtotal N/A N/A N/A N/A N/A N/A 4 Gain (Loss) on Derivatives Not Designated or Not Qualifying as Hedging Instruments: Interest rate derivatives (1) — — (364 ) (9 ) — — N/A Foreign currency exchange rate derivatives (1) — — (115 ) (1 ) — — N/A Credit derivatives — purchased (1) — — (9 ) — — — N/A Credit derivatives — written (1) — — 70 — — — N/A Equity derivatives (1) — — (254 ) (31 ) — — N/A Foreign currency transaction gains (losses) on hedged items — — (3 ) — — — N/A Subtotal — — (675 ) (41 ) — — N/A Earned income on derivatives 85 — 141 3 (28 ) (2 ) — Embedded derivatives (2) N/A N/A 167 — N/A N/A N/A Total $ 89 $ — $ (378 ) $ (38 ) $ (28 ) $ (2 ) $ (287 ) Nine Months Ended September 30, 2019 Net Investment Income Net Investment Gains (Losses) Net Derivative Gains (Losses) Policyholder Benefits and Claims Interest Credited to Policyholder Account Balances Other Expenses OCI (In millions) Gain (Loss) on Fair Value Hedges: Interest rate derivatives: Derivatives designated as hedging instruments (1) $ (5 ) $ — $ — $ 555 $ 1 $ — N/A Hedged items 5 — — (571 ) — — N/A Foreign currency exchange rate derivatives: Derivatives designated as hedging instruments (1) 17 39 — — — — N/A Hedged items (12 ) (37 ) — — — — N/A Amount excluded from the assessment of hedge effectiveness — (54 ) — — — — N/A Subtotal 5 (52 ) — (16 ) 1 — N/A Gain (Loss) on Cash Flow Hedges: Interest rate derivatives: (1) Amount of gains (losses) deferred in AOCI N/A N/A N/A N/A N/A N/A $ 1,136 Amount of gains (losses) reclassified from AOCI into income 16 (1 ) — — — 2 (17 ) Foreign currency exchange rate derivatives: (1) Amount of gains (losses) deferred in AOCI N/A N/A N/A N/A N/A N/A 191 Amount of gains (losses) reclassified from AOCI into income (3 ) (236 ) — — — 1 238 Foreign currency transaction gains (losses) on hedged items — 211 — — — — — Credit derivatives: (1) Amount of gains (losses) deferred in AOCI N/A N/A N/A N/A N/A N/A — Amount of gains (losses) reclassified from AOCI into income — — — — — — — Subtotal 13 (26 ) — — — 3 1,548 Gain (Loss) on NIFO Hedges: Foreign currency exchange rate derivatives (1) N/A N/A N/A N/A N/A N/A (18 ) Non-derivative hedging instruments N/A N/A N/A N/A N/A N/A (6 ) Subtotal N/A N/A N/A N/A N/A N/A (24 ) Gain (Loss) on Derivatives Not Designated or Not Qualifying as Hedging Instruments: Interest rate derivatives (1) (4 ) — 2,564 77 — — N/A Foreign currency exchange rate derivatives (1) — — 104 (4 ) — — N/A Credit derivatives — purchased (1) — — (25 ) — — — N/A Credit derivatives — written (1) — — 182 — — — N/A Equity derivatives (1) — — (900 ) (133 ) — — N/A Foreign currency transaction gains (losses) on hedged items — — (36 ) — — — N/A Subtotal (4 ) — 1,889 (60 ) — — N/A Earned income on derivatives 182 — 375 100 (110 ) — — Embedded derivatives (2) N/A N/A (171 ) — N/A N/A N/A Total $ 196 $ (78 ) $ 2,093 $ 24 $ (109 ) $ 3 $ 1,524 Nine Months Ended September 30, 2018 Net Investment Income Net Investment Gains (Losses) Net Derivative Gains (Losses) Policyholder Benefits and Claims Interest Credited to Policyholder Account Balances Other Expenses OCI (In millions) Gain (Loss) on Fair Value Hedges: Interest rate derivatives: Derivatives designated as hedging instruments (1) $ — $ — $ (385 ) $ — $ — $ — N/A Hedged items — — 388 — — — N/A Foreign currency exchange rate derivatives: Derivatives designated as hedging instruments (1) — — 57 — — — N/A Hedged items — — (60 ) — — — N/A Amount excluded from the assessment of hedge effectiveness — — (27 ) — — — N/A Subtotal — — (27 ) — — — N/A Gain (Loss) on Cash Flow Hedges: Interest rate derivatives: (1) Amount of gains (losses) deferred in AOCI N/A N/A N/A N/A N/A N/A $ (511 ) Amount of gains (losses) reclassified from AOCI into income 15 — 18 — — 1 (34 ) Foreign currency exchange rate derivatives: (1) Amount of gains (losses) deferred in AOCI N/A N/A N/A N/A N/A N/A 5 Amount of gains (losses) reclassified from AOCI into income (2 ) — (342 ) — — 1 343 Foreign currency transaction gains (losses) on hedged items — — 351 — — — — Credit derivatives: (1) Amount of gains (losses) deferred in AOCI N/A N/A N/A N/A N/A N/A — Amount of gains (losses) reclassified from AOCI into income — — — — — — — Subtotal 13 — 27 — — 2 (197 ) Gain (Loss) on NIFO Hedges: Foreign currency exchange rate derivatives (1) N/A N/A N/A N/A N/A N/A (72 ) Non-derivative hedging instruments N/A N/A N/A N/A N/A N/A — Subtotal N/A N/A N/A N/A N/A N/A (72 ) Gain (Loss) on Derivatives Not Designated or Not Qualifying as Hedging Instruments: Interest rate derivatives (1) 4 — (674 ) (21 ) — — N/A Foreign currency exchange rate derivatives (1) — — 271 (4 ) — — N/A Credit derivatives — purchased (1) — — 2 — — — N/A Credit derivatives — written (1) — — (9 ) — — — N/A Equity derivatives (1) 1 — (330 ) (52 ) — — N/A Foreign currency transaction gains (losses) on hedged items — — (110 ) — — — N/A Subtotal 5 — (850 ) (77 ) — — N/A Earned income on derivatives 259 — 407 8 (79 ) (8 ) — Embedded derivatives (2) N/A N/A 355 — N/A N/A N/A Total $ 277 $ — $ (88 ) $ (69 ) $ (79 ) $ (6 ) $ (269 ) __________________ (1) Excludes earned income on derivatives. (2) The valuation of guaranteed minimum benefits include s a nonperformance risk adjustment. The amounts included in net derivative gains (losses) in connection with this adjustment were $29 million and ($46) million for the three months and nine months ended September 30, 2019 , respectively, and ($20) million and ($25) million for the three months and nine months ended September 30, 2018 , respectively.
Net derivatives gains (losses) recognized on fair value derivatives and the related hedged items	The following table presents the balance sheet classification, carrying amount and cumulative fair value hedging adjustments for items designated and qualifying as hedged items in fair value hedges: September 30, 2019 Balance Sheet Line Item Carrying Amount of the Hedged Cumulative Amount (In millions) Fixed maturity securities AFS $ 2,685 $ (1 ) Mortgage loans $ 916 $ 15 Future policy benefits $ (4,623 ) $ (1,110 ) __________________ (1) Includes ($1) million of hedging adjustments on discontinued hedging relationships.
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: September 30, 2019 December 31, 2018 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) $ 4 $ 315 1.6 $ 4 $ 354 1.7 Credit default swaps referencing indices 35 2,199 2.4 28 2,154 2.5 Subtotal 39 2,514 2.3 32 2,508 2.4 Baa Single name credit default swaps (3) 3 266 1.7 3 482 1.5 Credit default swaps referencing indices 167 8,504 5.3 40 8,056 5.0 Subtotal 170 8,770 5.2 43 8,538 4.8 Ba Single name credit default swaps (3) — — — — 15 2.0 Credit default swaps referencing indices — — — — — — Subtotal — — — — 15 2.0 B Single name credit default swaps (3) — 10 0.7 — — — Credit default swaps referencing indices 20 289 4.7 7 330 5.0 Subtotal 20 299 4.6 7 330 5.0 Total $ 229 $ 11,583 4.5 $ 82 $ 11,391 4.3 __________________ (1) The rating agency designations are based on availability and the midpoint of the applicable ratings among Moody’s Investors Service (“Moody’s”), S&P 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 municipals.
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: September 30, 2019 December 31, 2018 Derivatives Subject to a Master Netting Arrangement or a Similar Arrangement Assets Liabilities Assets Liabilities (In millions) Gross estimated fair value of derivatives: OTC-bilateral (1) $ 12,419 $ 3,615 $ 8,805 $ 3,758 OTC-cleared (1) 627 45 245 33 Exchange-traded 11 20 18 80 Total gross estimated fair value of derivatives presented on the interim condensed consolidated balance sheets (1) 13,057 3,680 9,068 3,871 Gross amounts not offset on the interim condensed consolidated balance sheets: Gross estimated fair value of derivatives: (2) OTC-bilateral (2,787 ) (2,787 ) (2,570 ) (2,570 ) OTC-cleared (15 ) (15 ) (25 ) (25 ) Exchange-traded (1 ) (1 ) (1 ) (1 ) Cash collateral: (3), (4) OTC-bilateral (6,091 ) — (4,709 ) — OTC-cleared (587 ) (11 ) (145 ) — Exchange-traded — (5 ) — (57 ) Securities collateral: (5) OTC-bilateral (3,215 ) (757 ) (1,266 ) (1,134 ) OTC-cleared — (8 ) — (8 ) Exchange-traded — (14 ) — (7 ) Net amount after application of master netting agreements and collateral $ 361 $ 82 $ 352 $ 69 __________________ (1) At September 30, 2019 and December 31, 2018 , derivative assets included income or (expense) accruals reported in accrued investment income or in other liabilities of $112 million and $99 million , respectively, and derivative liabilities included (income) or expense accruals reported in accrued investment income or in other liabilities of $0 and ($59) 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 AFS, 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 September 30, 2019 and December 31, 2018 , the Company received excess cash collateral of $204 million and $135 million , respectively, and provided excess cash collateral of $310 million and $226 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 September 30, 2019 , none of the collateral had been sold or re-pledged. Securities collateral pledged by the Company is reported in fixed maturity securities AFS 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 September 30, 2019 and December 31, 2018 , the Company received excess securities collateral with an estimated fair value of $81 million and $70 million , respectively, for its OTC-bilateral derivatives, which are not included in the table above due to the foregoing limitation. At September 30, 2019 and December 31, 2018 , the Company provided excess securities collateral with an estimated fair value of $118 million and $212 million , respectively, for its OTC-bilateral derivatives, and $1.0 billion and $601 million , respectively, for its OTC-cleared derivatives, and $138 million and $90 million , respectively, for its exchange-traded derivatives, which are not included in the table above due to the foregoing limitation.
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: September 30, 2019 December 31, 2018 Derivatives Subject to a Master Netting Arrangement or a Similar Arrangement Assets Liabilities Assets Liabilities (In millions) Gross estimated fair value of derivatives: OTC-bilateral (1) $ 12,419 $ 3,615 $ 8,805 $ 3,758 OTC-cleared (1) 627 45 245 33 Exchange-traded 11 20 18 80 Total gross estimated fair value of derivatives presented on the interim condensed consolidated balance sheets (1) 13,057 3,680 9,068 3,871 Gross amounts not offset on the interim condensed consolidated balance sheets: Gross estimated fair value of derivatives: (2) OTC-bilateral (2,787 ) (2,787 ) (2,570 ) (2,570 ) OTC-cleared (15 ) (15 ) (25 ) (25 ) Exchange-traded (1 ) (1 ) (1 ) (1 ) Cash collateral: (3), (4) OTC-bilateral (6,091 ) — (4,709 ) — OTC-cleared (587 ) (11 ) (145 ) — Exchange-traded — (5 ) — (57 ) Securities collateral: (5) OTC-bilateral (3,215 ) (757 ) (1,266 ) (1,134 ) OTC-cleared — (8 ) — (8 ) Exchange-traded — (14 ) — (7 ) Net amount after application of master netting agreements and collateral $ 361 $ 82 $ 352 $ 69 __________________ (1) At September 30, 2019 and December 31, 2018 , derivative assets included income or (expense) accruals reported in accrued investment income or in other liabilities of $112 million and $99 million , respectively, and derivative liabilities included (income) or expense accruals reported in accrued investment income or in other liabilities of $0 and ($59) 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 AFS, 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 September 30, 2019 and December 31, 2018 , the Company received excess cash collateral of $204 million and $135 million , respectively, and provided excess cash collateral of $310 million and $226 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 September 30, 2019 , none of the collateral had been sold or re-pledged. Securities collateral pledged by the Company is reported in fixed maturity securities AFS 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 September 30, 2019 and December 31, 2018 , the Company received excess securities collateral with an estimated fair value of $81 million and $70 million , respectively, for its OTC-bilateral derivatives, which are not included in the table above due to the foregoing limitation. At September 30, 2019 and December 31, 2018 , the Company provided excess securities collateral with an estimated fair value of $118 million and $212 million , respectively, for its OTC-bilateral derivatives, and $1.0 billion and $601 million , respectively, for its OTC-cleared derivatives, and $138 million and $90 million , respectively, for its exchange-traded derivatives, which are not included in the table above due to the foregoing limitation.
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments and Hedging Activities Disclosure [Text Block]	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 derivative’s 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 • Derivatives held within 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 the same line item as the earnings effect of the hedged item. The carrying value of the hedged recognized asset or liability is adjusted for changes in its estimated fair value due to the hedged risk. • 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 - in OCI and reclassified into the statement of operations when the Company’s earnings are affected by the variability in cash flows of the hedged item. • Net investment in a foreign operation (“NIFO”) hedge - in OCI, consistent with the translation adjustment for the hedged net investment in the foreign operation. 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. 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 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 occurring, 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 of occurring are recognized immediately in net investment 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 issues certain products, which include variable annuities, 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). 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 securities AFS. 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 a benchmark interest rate, 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 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, and interest rate floors primarily to protect its minimum rate guarantee liabilities against declines in interest rates below a specified level. 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, to post variation margin on a daily basis in an amount equal to the difference in the daily market values of those contracts and to pledge initial margin based on futures exchange requirements. 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 issued 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. A synthetic guaranteed interest contract (“GIC”) is a contract that simulates the performance of a traditional GIC through the use of financial instruments. Under a synthetic GIC, the contractholder owns the underlying assets. The Company guarantees a rate of return on those assets for a premium. Synthetic GICs are not designated as hedging instruments. 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, NIFO hedges 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 non-U.S. subsidiaries. The Company utilizes currency options in NIFO hedges 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 issued 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 and involuntary restructuring for corporate obligors, as well as repudiation, moratorium or governmental intervention for sovereign obligors. 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, or other fixed maturity securities AFS. 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 issued by the Company. To hedge against adverse changes in equity indices, the Company enters into contracts to sell the underlying 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 issued 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, to post variation margin on a daily basis in an amount equal to the difference in the daily market values of those contracts and to pledge initial margin based on futures exchange requirements. 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 issued 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 a benchmark interest rate, 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: September 30, 2019 December 31, 2018 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 $ 2,305 $ 2,847 $ 3 $ 2,446 $ 2,197 $ 2 Foreign currency swaps Foreign currency exchange rate 1,155 72 — 1,233 54 — Foreign currency forwards Foreign currency exchange rate 2,396 13 16 2,140 28 18 Subtotal 5,856 2,932 19 5,819 2,279 20 Cash flow hedges: Interest rate swaps Interest rate 3,724 200 — 3,515 143 1 Interest rate forwards Interest rate 6,983 242 16 3,022 — 216 Foreign currency swaps Foreign currency exchange rate 35,668 2,449 1,666 35,931 1,796 1,831 Subtotal 46,375 2,891 1,682 42,468 1,939 2,048 NIFO hedges: Foreign currency forwards Foreign currency exchange rate 436 18 1 960 4 27 Currency options Foreign currency exchange rate 3,950 27 90 5,137 3 202 Subtotal 4,386 45 91 6,097 7 229 Total qualifying hedges 56,617 5,868 1,792 54,384 4,225 2,297 Derivatives Not Designated or Not Qualifying as Hedging Instruments: Interest rate swaps Interest rate 56,457 3,160 194 54,891 1,796 175 Interest rate floors Interest rate 12,701 212 — 12,701 102 — Interest rate caps Interest rate 55,638 14 6 54,575 154 1 Interest rate futures Interest rate 1,967 4 1 2,353 1 3 Interest rate options Interest rate 29,919 1,542 — 26,690 416 — Interest rate forwards Interest rate 235 15 — 234 1 15 Interest rate total return swaps Interest rate 1,048 48 8 1,048 33 2 Synthetic GICs Interest rate 28,098 — — 25,700 — — Foreign currency swaps Foreign currency exchange rate 13,235 920 498 11,388 884 458 Foreign currency forwards Foreign currency exchange rate 13,213 111 296 13,417 198 213 Currency futures Foreign currency exchange rate 891 — 3 847 4 — Currency options Foreign currency exchange rate 1,861 1 — 2,040 7 — Credit default swaps — purchased Credit 2,635 9 84 1,903 25 39 Credit default swaps — written Credit 11,583 231 2 11,391 95 13 Equity futures Equity market 4,128 7 16 2,992 13 77 Equity index options Equity market 28,783 759 684 27,707 884 550 Equity variance swaps Equity market 2,292 41 94 2,269 40 87 Equity total return swaps Equity market 836 3 2 929 91 — Total non-designated or nonqualifying derivatives 265,520 7,077 1,888 253,075 4,744 1,633 Total $ 322,137 $ 12,945 $ 3,680 $ 307,459 $ 8,969 $ 3,930 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 September 30, 2019 and December 31, 2018 . 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. The Effects of Derivatives on the Interim Condensed Consolidated Statements of Operations and Comprehensive Income (Loss) The following table presents the consolidated financial statement location and amount of gain (loss) recognized on fair value, cash flow, NIFO, nonqualifying hedging relationships and embedded derivatives: Three Months Ended September 30, 2019 Net Investment Income Net Investment Gains (Losses) Net Derivative Gains (Losses) Policyholder Benefits and Claims Interest Credited to Policyholder Account Balances Other Expenses OCI (In millions) Gain (Loss) on Fair Value Hedges: Interest rate derivatives: Derivatives designated as hedging instruments (1) $ (1 ) $ — $ — $ 223 $ 1 $ — N/A Hedged items — — — (237 ) — — N/A Foreign currency exchange rate derivatives: Derivatives designated as hedging instruments (1) 37 (6 ) — — — — N/A Hedged items (30 ) 5 — — — — N/A Amount excluded from the assessment of hedge effectiveness — (16 ) — — — — N/A Subtotal 6 (17 ) — (14 ) 1 — N/A Gain (Loss) on Cash Flow Hedges: Interest rate derivatives: (1) Amount of gains (losses) deferred in AOCI N/A N/A N/A N/A N/A N/A $ 526 Amount of gains (losses) reclassified from AOCI into income 5 1 — — — 1 (7 ) Foreign currency exchange rate derivatives: (1) Amount of gains (losses) deferred in AOCI N/A N/A N/A N/A N/A N/A 132 Amount of gains (losses) reclassified from AOCI into income — (344 ) — — — — 344 Foreign currency transaction gains (losses) on hedged items — 336 — — — — — Credit derivatives: (1) Amount of gains (losses) deferred in AOCI N/A N/A N/A N/A N/A N/A — Amount of gains (losses) reclassified from AOCI into income — — — — — — — Subtotal 5 (7 ) — — — 1 995 Gain (Loss) on NIFO Hedges: Foreign currency exchange rate derivatives (1) N/A N/A N/A N/A N/A N/A 25 Non-derivative hedging instruments N/A N/A N/A N/A N/A N/A 1 Subtotal N/A N/A N/A N/A N/A N/A 26 Gain (Loss) on Derivatives Not Designated or Not Qualifying as Hedging Instruments: Interest rate derivatives (1) (2 ) — 1,298 46 — — N/A Foreign currency exchange rate derivatives (1) — — 110 (3 ) — — N/A Credit derivatives — purchased (1) — — (5 ) — — — N/A Credit derivatives — written (1) — — (4 ) — — — N/A Equity derivatives (1) — — (51 ) (7 ) — — N/A Foreign currency transaction gains (losses) on hedged items — — (7 ) — — — N/A Subtotal (2 ) — 1,341 36 — — N/A Earned income on derivatives 66 — 131 35 (42 ) — — Embedded derivatives (2) N/A N/A (218 ) — N/A N/A N/A Total $ 75 $ (24 ) $ 1,254 $ 57 $ (41 ) $ 1 $ 1,021 Three Months Ended September 30, 2018 Net Investment Income Net Investment Gains (Losses) Net Derivative Gains (Losses) Policyholder Benefits and Claims Interest Credited to Policyholder Account Balances Other Expenses OCI (In millions) Gain (Loss) on Fair Value Hedges: Interest rate derivatives: Derivatives designated as hedging instruments (1) $ — $ — $ (107 ) $ — $ — $ — N/A Hedged items — — 108 — — — N/A Foreign currency exchange rate derivatives: Derivatives designated as hedging instruments (1) — — (56 ) — — — N/A Hedged items — — 48 — — — N/A Amount excluded from the assessment of hedge effectiveness — — (7 ) — — — N/A Subtotal — — (14 ) — — — N/A Gain (Loss) on Cash Flow Hedges: Interest rate derivatives: (1) Amount of gains (losses) deferred in AOCI N/A N/A N/A N/A N/A N/A $ (177 ) Amount of gains (losses) reclassified from AOCI into income 5 — (2 ) — — — (3 ) Foreign currency exchange rate derivatives: (1) Amount of gains (losses) deferred in AOCI N/A N/A N/A N/A N/A N/A (118 ) Amount of gains (losses) reclassified from AOCI into income (1 ) — (6 ) — — — 7 Foreign currency transaction gains (losses) on hedged items — — 11 — — — — Credit derivatives: (1) Amount of gains (losses) deferred in AOCI N/A N/A N/A N/A N/A N/A — Amount of gains (losses) reclassified from AOCI into income — — — — — — — Subtotal 4 — 3 — — — (291 ) Gain (Loss) on NIFO Hedges: Foreign currency exchange rate derivatives (1) N/A N/A N/A N/A N/A N/A 4 Non-derivative hedging instruments N/A N/A N/A N/A N/A N/A — Subtotal N/A N/A N/A N/A N/A N/A 4 Gain (Loss) on Derivatives Not Designated or Not Qualifying as Hedging Instruments: Interest rate derivatives (1) — — (364 ) (9 ) — — N/A Foreign currency exchange rate derivatives (1) — — (115 ) (1 ) — — N/A Credit derivatives — purchased (1) — — (9 ) — — — N/A Credit derivatives — written (1) — — 70 — — — N/A Equity derivatives (1) — — (254 ) (31 ) — — N/A Foreign currency transaction gains (losses) on hedged items — — (3 ) — — — N/A Subtotal — — (675 ) (41 ) — — N/A Earned income on derivatives 85 — 141 3 (28 ) (2 ) — Embedded derivatives (2) N/A N/A 167 — N/A N/A N/A Total $ 89 $ — $ (378 ) $ (38 ) $ (28 ) $ (2 ) $ (287 ) Nine Months Ended September 30, 2019 Net Investment Income Net Investment Gains (Losses) Net Derivative Gains (Losses) Policyholder Benefits and Claims Interest Credited to Policyholder Account Balances Other Expenses OCI (In millions) Gain (Loss) on Fair Value Hedges: Interest rate derivatives: Derivatives designated as hedging instruments (1) $ (5 ) $ — $ — $ 555 $ 1 $ — N/A Hedged items 5 — — (571 ) — — N/A Foreign currency exchange rate derivatives: Derivatives designated as hedging instruments (1) 17 39 — — — — N/A Hedged items (12 ) (37 ) — — — — N/A Amount excluded from the assessment of hedge effectiveness — (54 ) — — — — N/A Subtotal 5 (52 ) — (16 ) 1 — N/A Gain (Loss) on Cash Flow Hedges: Interest rate derivatives: (1) Amount of gains (losses) deferred in AOCI N/A N/A N/A N/A N/A N/A $ 1,136 Amount of gains (losses) reclassified from AOCI into income 16 (1 ) — — — 2 (17 ) Foreign currency exchange rate derivatives: (1) Amount of gains (losses) deferred in AOCI N/A N/A N/A N/A N/A N/A 191 Amount of gains (losses) reclassified from AOCI into income (3 ) (236 ) — — — 1 238 Foreign currency transaction gains (losses) on hedged items — 211 — — — — — Credit derivatives: (1) Amount of gains (losses) deferred in AOCI N/A N/A N/A N/A N/A N/A — Amount of gains (losses) reclassified from AOCI into income — — — — — — — Subtotal 13 (26 ) — — — 3 1,548 Gain (Loss) on NIFO Hedges: Foreign currency exchange rate derivatives (1) N/A N/A N/A N/A N/A N/A (18 ) Non-derivative hedging instruments N/A N/A N/A N/A N/A N/A (6 ) Subtotal N/A N/A N/A N/A N/A N/A (24 ) Gain (Loss) on Derivatives Not Designated or Not Qualifying as Hedging Instruments: Interest rate derivatives (1) (4 ) — 2,564 77 — — N/A Foreign currency exchange rate derivatives (1) — — 104 (4 ) — — N/A Credit derivatives — purchased (1) — — (25 ) — — — N/A Credit derivatives — written (1) — — 182 — — — N/A Equity derivatives (1) — — (900 ) (133 ) — — N/A Foreign currency transaction gains (losses) on hedged items — — (36 ) — — — N/A Subtotal (4 ) — 1,889 (60 ) — — N/A Earned income on derivatives 182 — 375 100 (110 ) — — Embedded derivatives (2) N/A N/A (171 ) — N/A N/A N/A Total $ 196 $ (78 ) $ 2,093 $ 24 $ (109 ) $ 3 $ 1,524 Nine Months Ended September 30, 2018 Net Investment Income Net Investment Gains (Losses) Net Derivative Gains (Losses) Policyholder Benefits and Claims Interest Credited to Policyholder Account Balances Other Expenses OCI (In millions) Gain (Loss) on Fair Value Hedges: Interest rate derivatives: Derivatives designated as hedging instruments (1
Schedule of Derivative Instruments	The following table presents the estimated fair value of the Company’s OTC-bilateral derivatives that were 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. OTC-bilateral derivatives that are not subject to collateral agreements are excluded from this table. September 30, 2019 December 31, 2018 Derivatives Derivatives Total Derivatives Subject to Credit- Contingent Provisions Derivatives Total (In millions) Estimated Fair Value of Derivatives in a Net Liability Position (1) $ 783 $ 45 $ 828 $ 1,148 $ 40 $ 1,188 Estimated Fair Value of Collateral Provided: Fixed maturity securities AFS $ 846 $ — $ 846 $ 1,218 $ 9 $ 1,227 Cash $ — $ — $ — $ 6 $ — $ 6 __________________ (1) After taking into consideration the existence of netting agreements.
Embedded Derivative Financial Instruments [Member]
Derivative Instruments, Gain (Loss) [Line Items]
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 September 30, 2019 December 31, 2018 (In millions) Embedded derivatives within asset host contracts: Ceded guaranteed minimum benefits Premiums, reinsurance and other receivables $ 64 $ 71 Embedded derivatives within liability host contracts: Direct guaranteed minimum benefits Policyholder account balances $ 620 $ 298 Assumed guaranteed minimum benefits Policyholder account balances 415 495 Funds withheld on ceded reinsurance Other liabilities 36 (41 ) Fixed annuities with equity indexed returns Policyholder account balances 109 58 Other Policyholder account balances 8 — Embedded derivatives within liability host contracts $ 1,188 $ 810

Fair Value (Tables)

Fair Value (Tables)	9 Months Ended
	Sep. 30, 2019
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: September 30, 2019 Fair Value Hierarchy Level 1 Level 2 Level 3 Total (In millions) Assets Fixed maturity securities AFS: U.S. corporate $ — $ 81,740 $ 5,374 $ 87,114 Foreign government — 67,410 137 67,547 Foreign corporate — 55,580 7,520 63,100 U.S. government and agency 20,145 20,657 — 40,802 RMBS 8 26,406 3,177 29,591 ABS — 13,521 824 14,345 Municipals — 12,934 8 12,942 CMBS — 10,262 346 10,608 Total fixed maturity securities AFS 20,153 288,510 17,386 326,049 Equity securities 795 109 437 1,341 Unit-linked and FVO Securities (1) 10,270 1,902 499 12,671 Short-term investments (2) 929 1,556 374 2,859 Residential mortgage loans — FVO — — 218 218 Other investments 73 151 323 547 Derivative assets: (3) Interest rate 4 7,989 291 8,284 Foreign currency exchange rate — 3,542 69 3,611 Credit — 208 32 240 Equity market 7 754 49 810 Total derivative assets 11 12,493 441 12,945 Embedded derivatives within asset host contracts (4) — — 64 64 Separate account assets (5) 88,435 100,966 956 190,357 Total assets (6) $ 120,666 $ 405,687 $ 20,698 $ 547,051 Liabilities Derivative liabilities: (3) Interest rate $ 1 $ 203 $ 24 $ 228 Foreign currency exchange rate 3 2,485 82 2,570 Credit — 86 — 86 Equity market 16 686 94 796 Total derivative liabilities 20 3,460 200 3,680 Embedded derivatives within liability host contracts (4) — — 1,188 1,188 Separate account liabilities (5) 1 30 9 40 Total liabilities $ 21 $ 3,490 $ 1,397 $ 4,908 December 31, 2018 Fair Value Hierarchy Level 1 Level 2 Level 3 Total (In millions) Assets Fixed maturity securities AFS: U.S. corporate $ — $ 74,874 $ 4,074 $ 78,948 Foreign government — 62,150 138 62,288 Foreign corporate — 50,310 6,393 56,703 U.S. government and agency 19,656 19,666 — 39,322 RMBS — 24,734 3,227 27,961 ABS — 11,775 697 12,472 Municipals — 11,533 — 11,533 CMBS — 8,696 342 9,038 Total fixed maturity securities AFS 19,656 263,738 14,871 298,265 Equity securities 916 105 419 1,440 Unit-linked and FVO Securities (1) 10,216 1,995 405 12,616 Short-term investments (2) 1,470 1,746 33 3,249 Residential mortgage loans — FVO — — 299 299 Other investments 80 118 39 237 Derivative assets: (3) Interest rate 1 4,809 33 4,843 Foreign currency exchange rate 4 2,922 52 2,978 Credit — 91 29 120 Equity market 13 956 59 1,028 Total derivative assets 18 8,778 173 8,969 Embedded derivatives within asset host contracts (4) — — 71 71 Separate account assets (5) 79,726 94,886 944 175,556 Total assets (6) $ 112,082 $ 371,366 $ 17,254 $ 500,702 Liabilities Derivative liabilities: (3) Interest rate $ 3 $ 194 $ 218 $ 415 Foreign currency exchange rate — 2,660 89 2,749 Credit — 48 4 52 Equity market 77 550 87 714 Total derivative liabilities 80 3,452 398 3,930 Embedded derivatives within liability host contracts (4) — — 810 810 Separate account liabilities (5) 1 20 7 28 Total liabilities $ 81 $ 3,472 $ 1,215 $ 4,768 __________________ (1) Unit-linked and FVO Securities were primarily comprised of Unit-linked investments at both September 30, 2019 and December 31, 2018. (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 interim condensed consolidated balance sheets and derivative liabilities are presented within other liabilities on the interim condensed consolidated balance sheets. The amounts are presented gross in the tables above to reflect the presentation on the interim condensed 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 interim condensed consolidated balance sheets. Embedded derivatives within liability host contracts are presented within policyholder account balances and other liabilities on the interim condensed consolidated balance sheets. (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. (6) Total assets included in the fair value hierarchy excluded other limited partnership interests that are measured at estimated fair value using the net asset value (“NAV”) per share (or its equivalent) practical expedient. At September 30, 2019 and December 31, 2018, the estimated fair value of such investments was $103 million and $145 million , respectively.
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: September 30, 2019 December 31, 2018 Impact of Valuation Significant Range Weighted Range Weighted Fixed maturity securities AFS (3) U.S. corporate and foreign corporate • Matrix pricing • Offered quotes (4) 50 - 147 114 85 - 134 104 Increase • Market pricing • Quoted prices (4) 25 - 451 118 25 - 638 110 Increase • Consensus pricing • Offered quotes (4) 95 - 113 103 100 - 110 102 Increase RMBS • Market pricing • Quoted prices (4) — - 115 96 — - 106 94 Increase (5) ABS • Market pricing • Quoted prices (4) 3 - 124 97 3 - 116 97 Increase (5) • Consensus pricing • Offered quotes (4) 96 - 105 102 100 - 103 101 Increase (5) Derivatives Interest rate • Present value techniques • Swap yield (6) 164 - 221 268 - 317 Increase (7) • Repurchase rates (8) (7) - 5 (5) - 6 Decrease (7) Foreign currency exchange rate • Present value techniques • Swap yield (6) (169) - 328 (20) - 328 Increase (7) Credit • Present value techniques • Credit spreads (9) 96 - 100 97 - 103 Decrease (7) • Consensus pricing • Offered quotes (10) Equity market • Present value techniques or option pricing models • Volatility (11) 16% - 24% 21% - 26% Increase (7) • Correlation (12) 10% - 30% 10% - 30% Embedded derivatives Direct, assumed and ceded guaranteed minimum benefits • Option pricing techniques • Mortality rates: Ages 0 - 40 0% - 0.18% 0% - 0.18% Decrease (13) Ages 41 - 60 0.03% - 0.80% 0.03% - 0.80% Decrease (13) Ages 61 - 115 0.13% - 100% 0.12% - 100% Decrease (13) • Lapse rates: Durations 1 - 10 0.25% - 100% 0.25% - 100% Decrease (14) Durations 11 - 20 0.50% - 100% 2% - 100% Decrease (14) Durations 21 - 116 0.50% - 100% 1.25% - 100% Decrease (14) • Utilization rates 0% - 22% 0% - 25% Increase (15) • Withdrawal rates 0% - 20% 0% - 20% (16) • Long-term equity volatilities 5.85% - 30% 7.16% - 30% Increase (17) • Nonperformance risk spread 0.04% - 1.52% 0.04% - 1.77% Decrease (18) __________________ (1) The weighted average for fixed maturity securities AFS is determined based on the estimated fair value of the securities. (2) The impact of a decrease in input would have resulted in 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 have resulted in substantially lower (higher) valuations. (4) Range and weighted average are presented in accordance with the market convention for fixed maturity securities AFS of dollars per hundred dollars of par. (5) Changes in the assumptions used for the probability of default would have been 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 September 30, 2019 and December 31, 2018 , independent non-binding broker quotations were used in the determination of less than 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 AFS Corporate (1) Foreign Structured Securities Municipals Equity Securities Unit-linked and FVO Securities (In millions) Three Months Ended September 30, 2019 Balance, beginning of period $ 11,607 $ 143 $ 4,155 $ 7 $ 457 $ 494 Total realized/unrealized gains (losses) included in net income (loss) (2), (3) (12 ) (1 ) 11 — 1 (2 ) Total realized/unrealized gains (losses) included in AOCI 111 (5 ) 5 1 — — Purchases (4) 922 — 525 — 1 74 Sales (4) (260 ) (1 ) (179 ) — (22 ) (65 ) Issuances (4) — — — — — — Settlements (4) — — — — — — Transfers into Level 3 (5) 605 2 — — — — Transfers out of Level 3 (5) (79 ) (1 ) (170 ) — — (2 ) Balance, end of period $ 12,894 $ 137 $ 4,347 $ 8 $ 437 $ 499 Three Months Ended September 30, 2018 Balance, beginning of period $ 10,621 $ 156 $ 4,677 $ 8 $ 408 $ 269 Total realized/unrealized gains (losses) included in net income (loss) (2), (3) 2 — 30 — (1 ) (2 ) Total realized/unrealized gains (losses) included in AOCI (176 ) (4 ) (15 ) — — — Purchases (4) 594 4 746 — 6 48 Sales (4) (497 ) (6 ) (281 ) — (7 ) (32 ) Issuances (4) — — — — — — Settlements (4) — — — — — — Transfers into Level 3 (5) 84 5 36 — 45 12 Transfers out of Level 3 (5) (295 ) (15 ) (977 ) (8 ) (8 ) (69 ) Balance, end of period $ 10,333 $ 140 $ 4,216 $ — $ 443 $ 226 Changes in unrealized gains (losses) included in net income (loss) for the instruments still held at September 30, 2019 (6) $ (6 ) $ (1 ) $ 10 $ — $ 1 $ (6 ) Changes in unrealized gains (losses) included in net income (loss) for the instruments still held at September 30, 2018 (6) $ 2 $ — $ 27 $ — $ — $ (2 ) Fair Value Measurements Using Significant Unobservable Inputs (Level 3) Short-term Investments Residential Mortgage Other Investments Net Derivatives (7) Net Embedded Derivatives (8) Separate (In millions) Three Months Ended September 30, 2019 Balance, beginning of period $ 123 $ 262 $ 232 $ 105 $ (835 ) $ 925 Total realized/unrealized gains (losses) included in net income (loss) (2), (3) — 2 — 27 (218 ) 5 Total realized/unrealized gains (losses) included in AOCI (1 ) — — 216 1 — Purchases (4) 255 — 91 — — 107 Sales (4) (3 ) (39 ) — — — (88 ) Issuances (4) — — — — — — Settlements (4) — (7 ) — (107 ) (72 ) (2 ) Transfers into Level 3 (5) — — — — — — Transfers out of Level 3 (5) — — — — — — Balance, end of period $ 374 $ 218 $ 323 $ 241 $ (1,124 ) $ 947 Three Months Ended September 30, 2018 Balance, beginning of period $ 559 $ 405 $ — $ (267 ) $ (240 ) $ 1,138 Total realized/unrealized gains (losses) included in net income (loss) (2), (3) — 4 — (70 ) 167 2 Total realized/unrealized gains (losses) included in AOCI (3 ) — — (107 ) 9 — Purchases (4) 102 — — — — 148 Sales (4) (2 ) (70 ) — — — (215 ) Issuances (4) — — — — — — Settlements (4) — (16 ) — 37 (75 ) — Transfers into Level 3 (5) — — — — — 5 Transfers out of Level 3 (5) (2 ) — — — — (77 ) Balance, end of period $ 654 $ 323 $ — $ (407 ) $ (139 ) $ 1,001 Changes in unrealized gains (losses) included in net income (loss) for the instruments still held at September 30, 2019 (6) $ — $ (8 ) $ — $ (22 ) $ (219 ) $ — Changes in unrealized gains (losses) included in net income (loss) for the instruments still held at September 30, 2018 (6) $ — $ (5 ) $ — $ (38 ) $ 168 $ — Fair Value Measurements Using Significant Unobservable Inputs (Level 3) Fixed Maturity Securities AFS Corporate (1) Foreign Structured Securities Municipals Equity Securities Unit-linked and FVO Securities (In millions) Nine Months Ended September 30, 2019 Balance, beginning of period $ 10,467 $ 138 $ 4,266 $ — $ 419 $ 405 Total realized/unrealized gains (losses) included in net income (loss) (2), (3) (6 ) — 36 — 29 21 Total realized/unrealized gains (losses) included in AOCI 717 (6 ) 65 1 — — Purchases (4) 2,073 4 948 7 49 117 Sales (4) (618 ) (6 ) (508 ) — (60 ) (41 ) Issuances (4) — — — — — — Settlements (4) — — — — — — Transfers into Level 3 (5) 601 12 2 — — 3 Transfers out of Level 3 (5) (340 ) (5 ) (462 ) — — (6 ) Balance, end of period $ 12,894 $ 137 $ 4,347 $ 8 $ 437 $ 499 Nine Months Ended September 30, 2018 Balance, beginning of period $ 11,219 $ 209 $ 4,841 $ — $ 428 $ 362 Total realized/unrealized gains (losses) included in net income (loss) (2), (3) 13 1 73 — (11 ) (7 ) Total realized/unrealized gains (losses) included in AOCI (621 ) (16 ) 1 — — — Purchases (4) 1,606 5 919 — 11 77 Sales (4) (1,366 ) (21 ) (788 ) — (20 ) (162 ) Issuances (4) — — — — — — Settlements (4) — — — — — — Transfers into Level 3 (5) 88 — 50 — 45 10 Transfers out of Level 3 (5) (606 ) (38 ) (880 ) — (10 ) (54 ) Balance, end of period $ 10,333 $ 140 $ 4,216 $ — $ 443 $ 226 Changes in unrealized gains (losses) included in net income (loss) for the instruments still held at September 30, 2019 (6) $ (10 ) $ — $ 35 $ — $ 21 $ 17 Changes in unrealized gains (losses) included in net income (loss) for the instruments still held at September 30, 2018 (6) $ 3 $ 1 $ 66 $ — $ — $ (8 ) Fair Value Measurements Using Significant Unobservable Inputs (Level 3) Short-term Investments Residential Mortgage Other Investments Net Derivatives (7) Net Embedded Derivatives (8) Separate (In millions) Nine Months Ended September 30, 2019 Balance, beginning of period $ 33 $ 299 $ 39 $ (225 ) $ (739 ) $ 937 Total realized/unrealized gains (losses) included in net income (loss) (2), (3) — 8 — 48 (170 ) 10 Total realized/unrealized gains (losses) included in AOCI (2 ) — — 439 (7 ) — Purchases (4) 372 — 284 4 — 147 Sales (4) (31 ) (64 ) — — — (146 ) Issuances (4) — — — (1 ) — 2 Settlements (4) — (25 ) — (24 ) (208 ) (3 ) Transfers into Level 3 (5) 2 — — — — — Transfers out of Level 3 (5) — — — — — — Balance, end of period $ 374 $ 218 $ 323 $ 241 $ (1,124 ) $ 947 Nine Months Ended September 30, 2018 Balance, beginning of period $ 33 $ 520 $ — $ (132 ) $ (274 ) $ 959 Total realized/unrealized gains (losses) included in net income (loss) (2), (3) — 7 — (151 ) 355 2 Total realized/unrealized gains (losses) included in AOCI (7 ) — — (228 ) 6 — Purchases (4) 659 — — 4 — 200 Sales (4) (11 ) (151 ) — — — (162 ) Issuances (4) — — — — — (3 ) Settlements (4) — (53 ) — 100 (226 ) — Transfers into Level 3 (5) — — — — — 81 Transfers out of Level 3 (5) (20 ) — — — — (76 ) Balance, end of period $ 654 $ 323 $ — $ (407 ) $ (139 ) $ 1,001 Changes in unrealized gains (losses) included in net income (loss) for the instruments still held at September 30, 2019 (6) $ — $ (7 ) $ — $ 27 $ (173 ) $ — Changes in unrealized gains (losses) included in net income (loss) for the instruments still held at September 30, 2018 (6) $ — $ (13 ) $ — $ (66 ) $ 352 $ — __________________ (1) Comprised of U.S. and foreign corporate securities. (2) 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 derivative gains (losses). (3) Interest and dividend accruals, as well as cash interest coupons and dividends received, are excluded from the rollforward. (4) 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. (5) Items transferred into and then out of Level 3 in the same period are excluded from the rollforward. (6) 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). (7) Freestanding derivative assets and liabilities are presented net for purposes of the rollforward. (8) Embedded derivative assets and liabilities are presented net for purposes of the rollforward. (9) 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	The following table presents information for residential mortgage loans, which are accounted for under the FVO and were initially measured at fair value. September 30, 2019 December 31, 2018 (In millions) Unpaid principal balance $ 245 $ 344 Difference between estimated fair value and unpaid principal balance (27 ) (45 ) Carrying value at estimated fair value $ 218 $ 299 Loans in nonaccrual status $ 58 $ 89 Loans more than 90 days past due $ 23 $ 41 Loans in nonaccrual status or more than 90 days past due, or both — difference between aggregate estimated fair value and unpaid principal balance $ (24 ) $ (36 )
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: September 30, 2019 Fair Value Hierarchy Carrying Level 1 Level 2 Level 3 Total (In millions) Assets Mortgage loans $ 78,741 $ — $ — $ 81,906 $ 81,906 Policy loans $ 9,671 $ — $ 329 $ 11,512 $ 11,841 Other invested assets $ 1,143 $ — $ 800 $ 343 $ 1,143 Premiums, reinsurance and other receivables $ 3,632 $ — $ 957 $ 2,886 $ 3,843 Other assets $ 277 $ — $ 129 $ 146 $ 275 Liabilities Policyholder account balances $ 116,170 $ — $ — $ 120,840 $ 120,840 Long-term debt $ 13,313 $ — $ 15,715 $ — $ 15,715 Collateral financing arrangement $ 1,013 $ — $ — $ 826 $ 826 Junior subordinated debt securities $ 3,149 $ — $ 4,297 $ — $ 4,297 Other liabilities $ 3,091 $ — $ 1,484 $ 2,487 $ 3,971 Separate account liabilities $ 114,274 $ — $ 114,274 $ — $ 114,274 December 31, 2018 Fair Value Hierarchy Carrying Level 1 Level 2 Level 3 Total (In millions) Assets Mortgage loans $ 75,453 $ — $ — $ 76,379 $ 76,379 Policy loans $ 9,699 $ — $ 338 $ 11,028 $ 11,366 Other invested assets $ 1,177 $ — $ 793 $ 383 $ 1,176 Premiums, reinsurance and other receivables $ 3,658 $ — $ 903 $ 2,894 $ 3,797 Other assets $ 326 $ — $ 164 $ 186 $ 350 Liabilities Policyholder account balances $ 114,040 $ — $ — $ 114,924 $ 114,924 Long-term debt $ 12,820 $ — $ 13,611 $ — $ 13,611 Collateral financing arrangement $ 1,060 $ — $ — $ 853 $ 853 Junior subordinated debt securities $ 3,147 $ — $ 3,738 $ — $ 3,738 Other liabilities $ 2,963 $ — $ 1,324 $ 2,194 $ 3,518 Separate account liabilities $ 104,010 $ — $ 104,010 $ — $ 104,010

Leases (Tables)

Leases (Tables)	9 Months Ended
	Sep. 30, 2019
Leases [Abstract]
Lease, Cost	The components of operating lease costs were as follows: Three Months Nine Months 2019 (In millions) Operating lease cost $ 75 $ 219 Variable lease cost 9 32 Sublease income (22 ) (65 ) Net lease cost $ 62 $ 186
Lessee, Operating Lease, Disclosure	Supplemental other information related to operating leases was as follows: September 30, 2019 (Dollars in millions) Cash paid for amounts included in the measurement of lease liability - operating cash flows $ 208 ROU assets obtained in exchange for new lease liabilities $ 272 Weighted-average remaining lease term 8 years Weighted-average discount rate 3.3 % The ROU assets and lease liabilities for operating leases were: September 30, 2019 (In millions) ROU asset (1) $ 1,543 Lease liability (1) $ 1,639 __________________ (1) Assets and liabilities include amounts recognized upon adoption of new guidance. See Note 1 .
Lessee, Operating Lease, Liability, Maturity	Maturities of operating lease liabilities were as follows: September 30, 2019 (In millions) Remainder of 2019 $ 86 2020 281 2021 253 2022 217 2023 204 Thereafter 853 Total undiscounted cash flows 1,894 Less: interest 255 Present value of lease liability $ 1,639
Schedule of Future Minimum Rental Payments for Operating Leases	Future minimum gross rental payments relating to lease arrangements in effect as determined prior to the adoption of ASU 2016-02 are as follows: December 31, 2018 (In millions) 2019 $ 292 2020 282 2021 260 2022 224 2023 209 Thereafter 859 Total $ 2,126

Equity (Tables)

Equity (Tables)	9 Months Ended
	Sep. 30, 2019
Equity [Abstract]
Schedule of Stock by Class	Preferred stock authorized, issued and outstanding was as follows at both September 30, 2019 and December 31, 2018 : Series Shares Shares Shares 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 5.875% Fixed-to-Floating Rate Non-Cumulative Preferred Stock, Series D 500,000 500,000 500,000 5.625% Non-Cumulative Preferred Stock, Series E 32,200 32,200 32,200 Series A Junior Participating Preferred Stock 10,000,000 — — Not designated 160,367,800 — — Total 200,000,000 26,032,200 26,032,200
Class of Stock [Line Items]
Class of Treasury Stock [Table Text Block]	MetLife, Inc. announced that its Board of Directors authorized common stock repurchases as follows: Authorization Remaining at Announcement Date Authorization Amount September 30, 2019 (In millions) July 31, 2019 $ 2,000 $ 1,235 November 1, 2018 $ 2,000 $ — May 22, 2018 $ 1,500 $ — November 1, 2017 $ 2,000 $ —
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 $ 16,340 $ 2,041 $ (4,766 ) $ (1,984 ) $ 11,631 OCI before reclassifications 4,064 658 (404 ) — 4,318 Deferred income tax benefit (expense) (829 ) (140 ) (2 ) — (971 ) AOCI before reclassifications, net of income tax 19,575 2,559 (5,172 ) (1,984 ) 14,978 Amounts reclassified from AOCI (84 ) 337 — 29 282 Deferred income tax benefit (expense) 18 (75 ) — (6 ) (63 ) Amounts reclassified from AOCI, net of income tax (66 ) 262 — 23 219 Balance, end of period $ 19,509 $ 2,821 $ (5,172 ) $ (1,961 ) $ 15,197 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 $ 8,538 $ 1,165 $ (4,670 ) $ (2,179 ) $ 2,854 OCI before reclassifications (1,953 ) (295 ) (240 ) 131 (2,357 ) Deferred income tax benefit (expense) 436 (22 ) 15 (27 ) 402 AOCI before reclassifications, net of income tax 7,021 848 (4,895 ) (2,075 ) 899 Amounts reclassified from AOCI (30 ) 4 — 31 5 Deferred income tax benefit (expense) 7 96 — (7 ) 96 Amounts reclassified from AOCI, net of income tax (23 ) 100 — 24 101 Balance, end of period $ 6,998 $ 948 $ (4,895 ) $ (2,051 ) $ 1,000 Nine 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 $ 7,042 $ 1,613 $ (4,905 ) $ (2,028 ) $ 1,722 OCI before reclassifications 16,263 1,305 (266 ) (2 ) 17,300 Deferred income tax benefit (expense) (3,634 ) (287 ) (1 ) — (3,922 ) AOCI before reclassifications, net of income tax 19,671 2,631 (5,172 ) (2,030 ) 15,100 Amounts reclassified from AOCI (213 ) 221 — 88 96 Deferred income tax benefit (expense) 48 (49 ) — (19 ) (20 ) Amounts reclassified from AOCI, net of income tax (165 ) 172 — 69 76 Cumulative effects of changes in accounting principles 4 22 — — 26 Deferred income tax benefit (expense), cumulative effects of changes in accounting principles (1 ) (4 ) — — (5 ) Cumulative effects of changes in accounting principles, net of income tax (2) 3 18 — — 21 Balance, end of period $ 19,509 $ 2,821 $ (5,172 ) $ (1,961 ) $ 15,197 Nine 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 $ 12,757 $ 905 $ (4,390 ) $ (1,845 ) $ 7,427 OCI before reclassifications (8,860 ) (506 ) (657 ) 130 (9,893 ) Deferred income tax benefit (expense) 1,977 77 24 (27 ) 2,051 AOCI before reclassifications, net of income tax 5,874 476 (5,023 ) (1,742 ) (415 ) Amounts reclassified from AOCI 98 309 — 93 500 Deferred income tax benefit (expense) (22 ) (47 ) — (20 ) (89 ) Amounts reclassified from AOCI, net of income tax 76 262 — 73 411 Cumulative effects of changes in accounting principles (425 ) — — — (425 ) Deferred income tax benefit (expense), cumulative effects of changes in accounting principles 1,473 210 36 (382 ) 1,337 Cumulative effects of changes in accounting principles, net of income tax (3) 1,048 210 36 (382 ) 912 Sale of subsidiary (4) — — 92 — 92 Balance, end of period $ 6,998 $ 948 $ (4,895 ) $ (2,051 ) $ 1,000 __________________ (1) See Note 6 for information on offsets to investments related to future policy benefits, DAC, VOBA and DSI, and the policyholder dividend obligation. (2) See Note 1 for further information on adoption of new accounting pronouncements. (3) See Note 1 of the Notes to the Consolidated Financial Statements included in the 2018 Annual Report for further information on adoption of new accounting pronouncements. (4) See Note 3 of the Notes to the Consolidated Financial Statements included in the 2018 Annual Report.
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 Nine Months 2019 2018 2019 2018 (In millions) Net unrealized investment gains (losses): Net unrealized investment gains (losses) $ 84 $ 101 $ 200 $ (36 ) Net investment gains (losses) Net unrealized investment gains (losses) (12 ) 9 (15 ) 9 Net investment income Net unrealized investment gains (losses) 12 (80 ) 28 (71 ) Net derivative gains (losses) Net unrealized investment gains (losses), before income tax 84 30 213 (98 ) Income tax (expense) benefit (18 ) (7 ) (48 ) 22 Net unrealized investment gains (losses), net of income tax 66 23 165 (76 ) Unrealized gains (losses) on derivatives - cash flow hedges: Interest rate derivatives 5 5 16 15 Net investment income Interest rate derivatives 1 — (1 ) — Net investment gains (losses) Interest rate derivatives — (2 ) — 18 Net derivative gains (losses) Interest rate derivatives 1 — 2 1 Other expenses Foreign currency exchange rate derivatives — (1 ) (3 ) (2 ) Net investment income Foreign currency exchange rate derivatives (344 ) — (236 ) — Net investment gains (losses) Foreign currency exchange rate derivatives — (6 ) — (342 ) Net derivative gains (losses) Foreign currency exchange rate derivatives — — 1 1 Other expenses Gains (losses) on cash flow hedges, before income tax (337 ) (4 ) (221 ) (309 ) Income tax (expense) benefit 75 (96 ) 49 47 Gains (losses) on cash flow hedges, net of income tax (262 ) (100 ) (172 ) (262 ) Defined benefit plans adjustment: (1) Amortization of net actuarial gains (losses) (36 ) (37 ) (108 ) (108 ) Amortization of prior service (costs) credit 7 6 20 15 Amortization of defined benefit plan items, before income tax (29 ) (31 ) (88 ) (93 ) Income tax (expense) benefit 6 7 19 20 Amortization of defined benefit plan items, net of income tax (23 ) (24 ) (69 ) (73 ) Total reclassifications, net of income tax $ (219 ) $ (101 ) $ (76 ) $ (411 ) __________________ (1) These AOCI components are included in the computation of net periodic benefit costs. See Note 13 .
Preferred Stock
Class of Stock [Line Items]
Dividends Declared [Table Text Block]	The declaration, record and payment dates, as well as per share and aggregate dividend amounts, for MetLife, Inc.’s preferred stock were as follows for the nine months ended September 30, 2019 and 2018 : Declaration Date Record Date Payment Date Preferred Stock Dividend Series A Series C Series D Series E Per Share Aggregate Per Aggregate Per Aggregate Per Aggregate (In millions, except per share data) August 15, 2019 September 1, 2019 September 16, 2019 $ 0.253 $ 6 $ — $ — $ — $ — $ — $ — August 15, 2019 August 31, 2019 September 16, 2019 — — — — 29.375 15 351.563 11 May 15, 2019 May 31, 2019 June 17, 2019 0.261 6 26.250 39 — — 351.563 12 March 5, 2019 February 28, 2019 March 15, 2019 0.250 6 — — — — — — February 15, 2019 February 28, 2019 March 15, 2019 — — — — 29.375 15 351.563 11 Total $ 0.764 $ 18 $ 26.250 $ 39 $ 58.750 $ 30 $ 1,054.689 $ 34 August 15, 2018 August 31, 2018 September 17, 2018 $ 0.256 $ 6 $ — $ — $ 28.233 $ 14 $ 394.531 $ 12 May 15, 2018 May 31, 2018 June 15, 2018 0.256 7 26.250 39 — — — — March 5, 2018 February 28, 2018 March 15, 2018 0.250 6 — — — — — — Total $ 0.762 $ 19 $ 26.250 $ 39 $ 28.233 $ 14 $ 394.531 $ 12
Common Stock
Class of Stock [Line Items]
Dividends Declared [Table Text Block]	The declaration, record and payment dates, as well as per share and aggregate dividend amounts, for MetLife, Inc.’s common stock were as follows for the nine months ended September 30, 2019 and 2018 : Declaration Date Record Date Payment Date Common Stock Dividend Per Share Aggregate (In millions, except per share data) July 8, 2019 August 6, 2019 September 13, 2019 $ 0.440 $ 413 April 23, 2019 May 7, 2019 June 13, 2019 $ 0.440 419 January 7, 2019 February 5, 2019 March 13, 2019 $ 0.420 405 $ 1,237 July 6, 2018 August 6, 2018 September 13, 2018 $ 0.420 $ 419 April 24, 2018 May 7, 2018 June 13, 2018 $ 0.420 428 January 5, 2018 February 5, 2018 March 13, 2018 $ 0.400 416 $ 1,263

Other Revenues and Other Expe_2

Other Revenues and Other Expenses (Tables)	9 Months Ended
	Sep. 30, 2019
Other Income and Expenses [Abstract]
Disaggregation of Revenue	Information on other revenues, which primarily includes fees related to service contracts from customers, was as follows: Three Months Nine Months 2019 2018 2019 2018 (In millions) Prepaid legal plans $ 87 $ 74 $ 259 $ 220 Fee-based investment management 67 74 213 219 Recordkeeping and administrative services (1) 52 56 154 170 Administrative services-only contracts 53 53 159 162 Other revenue from service contracts from customers 54 72 189 208 Total revenues from service contracts from customers 313 329 974 979 Other 106 150 417 449 Total other revenues $ 419 $ 479 $ 1,391 $ 1,428 __________________ (1) Related to products and businesses no longer actively marketed by the Company.
Other Expenses	Information on other expenses was as follows: Three Months Nine Months 2019 2018 2019 2018 (In millions) Employee related costs (1) $ 876 $ 921 $ 2,714 $ 2,752 Third party staffing costs 425 435 1,214 1,217 General and administrative expenses 273 290 733 884 Pension, postretirement and postemployment benefit costs 57 45 170 141 Premium taxes, other taxes, and licenses & fees 164 193 508 559 Commissions and other variable expenses 1,514 1,403 4,433 4,257 Capitalization of DAC (882 ) (810 ) (2,531 ) (2,440 ) Amortization of DAC and VOBA 797 732 2,110 2,132 Amortization of negative VOBA (4 ) (7 ) (24 ) (45 ) Interest expense on debt 223 267 731 862 Total other expenses $ 3,443 $ 3,469 $ 10,058 $ 10,319 __________________ (1) Includes ($59) million and ($176) million for the three months and nine months ended September 30, 2019 , respectively, and ($40) million and ($57) million for the three months and nine months ended September 30, 2018 , respectively, for the net change in cash surrender value of investments in certain life insurance policies, net of premiums paid.
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 Nine Months 2019 2018 2019 2018 Severance (In millions) Balance, beginning of period $ 20 $ 20 $ 23 $ 22 Restructuring charges 40 17 61 35 Cash payments (13 ) (17 ) (37 ) (37 ) Balance, end of period $ 47 $ 20 $ 47 $ 20 Total restructuring charges incurred since inception of initiative $ 197 $ 108 $ 197 $ 108

Employee Benefit Plans (Tables)

Employee Benefit Plans (Tables)	9 Months Ended
	Sep. 30, 2019
Retirement Benefits [Abstract]
Net periodic benefit costs	The components of net periodic benefit costs, reported in other expenses, were as follows: Three Months 2019 2018 Pension Benefits Other Postretirement Benefits Pension Benefits Other Postretirement Benefits (In millions) Service costs $ 59 $ 2 $ 58 $ 1 Interest costs 104 13 95 13 Expected return on plan assets (122 ) (16 ) (133 ) (18 ) Amortization of net actuarial (gains) losses 49 (13 ) 46 (9 ) Amortization of prior service costs (credit) (4 ) (3 ) (1 ) (5 ) Net periodic benefit costs (credit) $ 86 $ (17 ) $ 65 $ (18 ) Nine Months 2019 2018 Pension Benefits Other Postretirement Benefits Pension Benefits Other Postretirement Benefits (In millions) Service costs $ 174 $ 4 $ 176 $ 4 Interest costs 312 39 287 39 Expected return on plan assets (367 ) (50 ) (400 ) (54 ) Amortization of net actuarial (gains) losses 145 (37 ) 134 (26 ) Amortization of prior service costs (credit) (12 ) (8 ) (1 ) (14 ) Net periodic benefit costs (credit) $ 252 $ (52 ) $ 196 $ (51 )

Earnings Per Common Share (Tabl

Earnings Per Common Share (Tables)	9 Months Ended
	Sep. 30, 2019
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 Nine Months 2019 2018 2019 2018 (In millions, except per share data) Weighted Average Shares: Weighted average common stock outstanding - basic 929.6 992.7 944.0 1,014.6 Incremental common shares from assumed exercise or issuance of stock-based awards 6.8 8.0 6.8 8.2 Weighted average common stock outstanding - diluted 936.4 1,000.7 950.8 1,022.8 Net Income (Loss): Net income (loss) $ 2,190 $ 915 $ 5,321 $ 3,066 Less: Net income (loss) attributable to noncontrolling interests 6 3 15 10 Less: Preferred stock dividends 32 32 121 84 Net income (loss) available to MetLife, Inc.’s common shareholders $ 2,152 $ 880 $ 5,185 $ 2,972 Basic $ 2.31 $ 0.89 $ 5.49 $ 2.93 Diluted $ 2.30 $ 0.88 $ 5.45 $ 2.91

Business, Basis of Presentati_3

Business, Basis of Presentation and Summary of Significant Accounting Policies (New Accounting Pronouncements) (Details) - USD ($) $ in Millions	Sep. 30, 2019	Jun. 30, 2019	Jan. 01, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Dec. 31, 2017
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Accumulated Other Comprehensive Income (Loss), Net of Tax	$ 15,197	$ 11,631		$ 1,722	$ 1,000	$ 2,854	$ 7,427
Retained Earnings (Accumulated Deficit)	32,948			$ 28,926
Operating Lease, Right-of-Use Asset	1,543
Operating Lease, Right-of-Use-Liability	$ 1,639
Allowance for Credit Losses as a Percentage of Amortized Costs	0.50%
Accounting Standards Update 2017-12
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Accumulated Other Comprehensive Income (Loss), Net of Tax			$ 18
Retained Earnings (Accumulated Deficit)			(18)
Accounting Standards Update 2016-02
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Retained Earnings (Accumulated Deficit)			95
Operating Lease, Right-of-Use Asset			1,500
Operating Lease, Right-of-Use-Liability			$ 1,700
Maximum | Accounting Standards Update 2016-13
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Allowance for Credit Losses as a Percentage of Amortized Costs	1.00%

Business, Basis of Presentati_4

Business, Basis of Presentation and Summary of Significant Accounting Policies (Narrative) (Details)	9 Months Ended
	Sep. 30, 2019Segment
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Number of segments	5

Segment Information (Earnings)

Segment Information (Earnings) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Revenues
Premiums	$ 10,781	$ 10,242	$ 30,315	$ 34,573
Universal life and investment-type product policy fees	1,440	1,343	4,217	4,105
Net investment income	4,623	4,486	14,224	12,704
Other revenues	419	479	1,391	1,428
Net investment gains (losses)	161	117	237	(443)
Net derivative gains (losses)	1,254	(378)	2,093	(88)
Total revenues	18,678	16,289	52,477	52,279
Expenses
Policyholder benefits and claims and policyholder dividends	10,944	10,407	30,611	34,597
Interest credited to policyholder account balances	1,500	1,334	4,976	3,527
Capitalization of DAC	(882)	(810)	(2,531)	(2,440)
Amortization of DAC and VOBA	797	732	2,110	2,132
Amortization of negative VOBA	(4)	(7)	(24)	(45)
Interest expense on debt	223	267	731	862
Other expenses	3,309	3,287	9,772	9,810
Total expenses	15,887	15,210	45,645	48,443
Provision for income tax expense (benefit)	601	164	1,511	770
Income (loss) from continuing operations, net of income tax	2,190	915	5,321	3,066
Operating Segments
Revenues
Premiums	10,746	10,242	30,280	34,573
Universal life and investment-type product policy fees	1,352	1,300	4,054	4,004
Net investment income	4,473	4,462	13,308	13,008
Other revenues	347	396	1,178	1,179
Net investment gains (losses)	0	0	0	0
Net derivative gains (losses)	0	0	0	0
Total revenues	16,918	16,400	48,820	52,764
Expenses
Policyholder benefits and claims and policyholder dividends	10,858	10,252	30,282	34,345
Interest credited to policyholder account balances	1,274	1,202	3,786	3,476
Capitalization of DAC	(871)	(810)	(2,520)	(2,439)
Amortization of DAC and VOBA	756	624	2,108	2,029
Amortization of negative VOBA	(4)	(7)	(24)	(44)
Interest expense on debt	223	252	731	817
Other expenses	3,199	3,187	9,492	9,474
Total expenses	15,435	14,700	43,855	47,658
Provision for income tax expense (benefit)	261	292	911	897
Adjusted earnings	1,222	1,408	4,054	4,209
Operating Segments | U.S.
Revenues
Premiums	6,903	6,431	18,704	22,950
Universal life and investment-type product policy fees	264	252	808	772
Net investment income	1,760	1,787	5,274	5,168
Other revenues	224	206	668	613
Net investment gains (losses)	0	0	0	0
Net derivative gains (losses)	0	0	0	0
Total revenues	9,151	8,676	25,454	29,503
Expenses
Policyholder benefits and claims and policyholder dividends	6,759	6,219	18,233	22,590
Interest credited to policyholder account balances	507	457	1,512	1,303
Capitalization of DAC	(131)	(116)	(372)	(336)
Amortization of DAC and VOBA	121	128	352	357
Amortization of negative VOBA	0	0	0	0
Interest expense on debt	3	2	8	8
Other expenses	1,004	982	3,006	2,908
Total expenses	8,263	7,672	22,739	26,830
Provision for income tax expense (benefit)	181	209	552	554
Adjusted earnings	707	795	2,163	2,119
Operating Segments | Asia
Revenues
Premiums	1,654	1,689	4,984	5,091
Universal life and investment-type product policy fees	430	428	1,255	1,221
Net investment income	915	830	2,739	2,464
Other revenues	14	12	43	40
Net investment gains (losses)	0	0	0	0
Net derivative gains (losses)	0	0	0	0
Total revenues	3,013	2,959	9,021	8,816
Expenses
Policyholder benefits and claims and policyholder dividends	1,264	1,354	3,862	3,934
Interest credited to policyholder account balances	440	381	1,267	1,094
Capitalization of DAC	(498)	(478)	(1,449)	(1,438)
Amortization of DAC and VOBA	353	366	972	993
Amortization of negative VOBA	(2)	(4)	(18)	(31)
Interest expense on debt	0	0	0	0
Other expenses	955	943	2,865	2,871
Total expenses	2,512	2,562	7,499	7,423
Provision for income tax expense (benefit)	152	131	458	437
Adjusted earnings	349	266	1,064	956
Operating Segments | Latin America
Revenues
Premiums	703	692	2,122	2,079
Universal life and investment-type product policy fees	256	229	820	786
Net investment income	295	339	951	942
Other revenues	8	7	31	24
Net investment gains (losses)	0	0	0	0
Net derivative gains (losses)	0	0	0	0
Total revenues	1,262	1,267	3,924	3,831
Expenses
Policyholder benefits and claims and policyholder dividends	656	670	2,043	1,976
Interest credited to policyholder account balances	74	102	254	295
Capitalization of DAC	(102)	(97)	(296)	(282)
Amortization of DAC and VOBA	58	5	215	136
Amortization of negative VOBA	0	(1)	0	(1)
Interest expense on debt	0	2	2	5
Other expenses	356	351	1,074	1,052
Total expenses	1,042	1,032	3,292	3,181
Provision for income tax expense (benefit)	65	65	184	195
Adjusted earnings	155	170	448	455
Operating Segments | EMEA
Revenues
Premiums	526	514	1,619	1,611
Universal life and investment-type product policy fees	117	105	325	324
Net investment income	73	73	220	221
Other revenues	13	15	40	51
Net investment gains (losses)	0	0	0	0
Net derivative gains (losses)	0	0	0	0
Total revenues	729	707	2,204	2,207
Expenses
Policyholder benefits and claims and policyholder dividends	291	281	867	861
Interest credited to policyholder account balances	25	24	72	75
Capitalization of DAC	(128)	(109)	(371)	(348)
Amortization of DAC and VOBA	128	110	327	324
Amortization of negative VOBA	(2)	(2)	(6)	(12)
Interest expense on debt	0	0	0	0
Other expenses	341	333	1,029	1,023
Total expenses	655	637	1,918	1,923
Provision for income tax expense (benefit)	21	15	70	62
Adjusted earnings	53	55	216	222
Operating Segments | MetLife Holdings
Revenues
Premiums	925	949	2,776	2,856
Universal life and investment-type product policy fees	284	286	844	901
Net investment income	1,316	1,375	3,941	4,056
Other revenues	52	70	184	205
Net investment gains (losses)	0	0	0	0
Net derivative gains (losses)	0	0	0	0
Total revenues	2,577	2,680	7,745	8,018
Expenses
Policyholder benefits and claims and policyholder dividends	1,856	1,766	5,207	5,022
Interest credited to policyholder account balances	228	238	681	709
Capitalization of DAC	(9)	(8)	(23)	(28)
Amortization of DAC and VOBA	94	13	237	214
Amortization of negative VOBA	0	0	0	0
Interest expense on debt	2	2	6	6
Other expenses	223	264	687	815
Total expenses	2,394	2,275	6,795	6,738
Provision for income tax expense (benefit)	34	78	185	248
Adjusted earnings	149	327	765	1,032
Operating Segments | Corporate & Other
Revenues
Premiums	35	(33)	75	(14)
Universal life and investment-type product policy fees	1	0	2	0
Net investment income	114	58	183	157
Other revenues	36	86	212	246
Net investment gains (losses)	0	0	0	0
Net derivative gains (losses)	0	0	0	0
Total revenues	186	111	472	389
Expenses
Policyholder benefits and claims and policyholder dividends	32	(38)	70	(38)
Interest credited to policyholder account balances	0	0	0	0
Capitalization of DAC	(3)	(2)	(9)	(7)
Amortization of DAC and VOBA	2	2	5	5
Amortization of negative VOBA	0	0	0	0
Interest expense on debt	218	246	715	798
Other expenses	320	314	831	805
Total expenses	569	522	1,612	1,563
Provision for income tax expense (benefit)	(192)	(206)	(538)	(599)
Adjusted earnings	(191)	(205)	(602)	(575)
Significant Reconciling Items
Revenues
Premiums	35	0	35	0
Universal life and investment-type product policy fees	88	43	163	101
Net investment income	150	24	916	(304)
Other revenues	72	83	213	249
Net investment gains (losses)	161	117	237	(443)
Net derivative gains (losses)	1,254	(378)	2,093	(88)
Total revenues	1,760	(111)	3,657	(485)
Expenses
Policyholder benefits and claims and policyholder dividends	86	155	329	252
Interest credited to policyholder account balances	226	132	1,190	51
Capitalization of DAC	(11)	0	(11)	(1)
Amortization of DAC and VOBA	41	108	2	103
Amortization of negative VOBA	0	0	0	(1)
Interest expense on debt	0	15	0	45
Other expenses	110	100	280	336
Total expenses	452	510	1,790	785
Provision for income tax expense (benefit)	$ 340	$ (128)	$ 600	$ (127)

Segment Information (Total Asse

Segment Information (Total Assets) (Details) - USD ($) $ in Millions	Sep. 30, 2019	Dec. 31, 2018
Segment Reporting Information [Line Items]
Total assets	$ 742,812	$ 687,538
U.S.
Segment Reporting Information [Line Items]
Total assets	267,428	248,174
Asia
Segment Reporting Information [Line Items]
Total assets	160,798	146,278
Latin America
Segment Reporting Information [Line Items]
Total assets	75,640	70,417
EMEA
Segment Reporting Information [Line Items]
Total assets	26,418	27,829
MetLife Holdings
Segment Reporting Information [Line Items]
Total assets	176,410	166,872
Corporate & Other
Segment Reporting Information [Line Items]
Total assets	$ 36,118	$ 27,968

Segment Information (Narrative)

Segment Information (Narrative) (Details) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2019USD ($)	Sep. 30, 2018USD ($)	Sep. 30, 2019USD ($)Segment	Sep. 30, 2018USD ($)
Segment Reporting [Abstract]
Number of segments | Segment			5
Segment Reporting Information [Line Items]
Revenues	$ 18,678	$ 16,289	$ 52,477	$ 52,279
Concentration Risk, Percentage	10.00%	10.00%	10.00%	10.00%
U.S. | One U.S. Customer
Segment Reporting Information [Line Items]
Revenues				$ 6,000
Sales | U.S. | One U.S. Customer
Segment Reporting Information [Line Items]
Concentration Risk, Percentage				15.00%

Pending Disposition - Hong Kong

Pending Disposition - Hong Kong Sale (Details) - MetLife Hong Kong [Member] $ in Millions	9 Months Ended
	Sep. 30, 2019USD ($)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Discontinued Operation, Gain (Loss) on Disposal of Discontinued Operation, Net of Tax	$ (140)
Discontinued Operation, Gain (Loss) from Disposal of Discontinued Operation, before Income Tax	(100)
Goodwill, Written off Related to Sale of Business Unit	75
Discontinued Operation, Tax Effect of Gain (Loss) from Disposal of Discontinued Operation	(40)
Disposal Group, Including Discontinued Operation, Assets	$ 2,900

Insurance (Guarantees Related t

Insurance (Guarantees Related to Annuity Contracts) (Details) - USD ($) $ in Millions	9 Months Ended	12 Months Ended
	Sep. 30, 2019	Dec. 31, 2018
Variable Annuity Guarantees: | Guaranteed Death Benefits
Net Amount at Risk by Product and Guarantee [Line Items]
Total account value	$ 63,613	$ 63,381
Separate account value (1)	40,373	38,888
Net amount at risk	$ 1,744	$ 3,197
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	$ 23,703	$ 23,174
Separate account value (1)	21,940	21,385
Net amount at risk	$ 658	$ 511
Average attained age of contractholders	65 years	64 years
Other Annuity Guarantees: | Guaranteed Annuitization Benefits
Net Amount at Risk by Product and Guarantee [Line Items]
Total account value	$ 5,616	$ 5,787
Net amount at risk	$ 402	$ 549
Average attained age of contractholders	51 years	50 years
Restatement Adjustment | Variable Annuity Guarantees: | Guaranteed Death Benefits
Net Amount at Risk by Product and Guarantee [Line Items]
Total account value		$ 7,100
Separate account value (1)		1,500
Net amount at risk		429
Restatement Adjustment | Variable Annuity Guarantees: | Guaranteed Annuitization Benefits
Net Amount at Risk by Product and Guarantee [Line Items]
Total account value		1,500
Separate account value (1)		1,500
Net amount at risk		$ 28
Average attained age of contractholders		1 year
Restatement Adjustment | Other Annuity Guarantees: | Guaranteed Annuitization Benefits
Net Amount at Risk by Product and Guarantee [Line Items]
Total account value		$ 4,500
Net amount at risk		60
Previously Reported | Variable Annuity Guarantees: | Guaranteed Death Benefits
Net Amount at Risk by Product and Guarantee [Line Items]
Total account value		56,200
Separate account value (1)		37,300
Net amount at risk		2,800
Previously Reported | Variable Annuity Guarantees: | Guaranteed Annuitization Benefits
Net Amount at Risk by Product and Guarantee [Line Items]
Total account value		21,600
Separate account value (1)		19,800
Net amount at risk		$ 483
Average attained age of contractholders		65 years
Previously Reported | Other Annuity Guarantees: | Guaranteed Annuitization Benefits
Net Amount at Risk by Product and Guarantee [Line Items]
Total account value		$ 1,300
Net amount at risk		$ 489

Insurance (Guarantees Related_2

Insurance (Guarantees Related to Universal and Variable Life Contracts) (Details) - Universal and Variable Life Contracts - USD ($) $ in Millions	9 Months Ended	12 Months Ended
	Sep. 30, 2019	Dec. 31, 2018
Secondary Guarantees
Net Amount at Risk by Product and Guarantee [Line Items]
Total account value (1), (3)	$ 11,512	$ 11,205
Net amount at risk (7)	$ 86,696	$ 93,028
Average attained age of policyholders	53 years	52 years
Paid-Up Guarantees
Net Amount at Risk by Product and Guarantee [Line Items]
Total account value (1), (3)	$ 2,970	$ 3,070
Net amount at risk (7)	$ 14,743	$ 15,539
Average attained age of policyholders	64 years	64 years
Restatement Adjustment | Secondary Guarantees
Net Amount at Risk by Product and Guarantee [Line Items]
Total account value (1), (3)		$ 2,300
Net amount at risk (7)		$ 28,900
Average attained age of policyholders		5 years
Previously Reported | Secondary Guarantees
Net Amount at Risk by Product and Guarantee [Line Items]
Total account value (1), (3)		$ 8,900
Net amount at risk (7)		$ 64,200
Average attained age of policyholders		57 years

Insurance (Rollforward of Unpai

Insurance (Rollforward of Unpaid Claims) (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Liability for Unpaid Claims and Claims Adjustment Expense [Roll Forward]
Balance, beginning of period	$ 17,788	$ 17,094
Less: Reinsurance recoverables	2,332	2,198
Net balance, beginning of period	15,456	14,896
Incurred related to:
Current period	20,236	18,386
Prior periods (1)	146	256
Total incurred	20,382	18,642
Paid related to:
Current period	(14,203)	(13,033)
Prior periods	(4,960)	(4,896)
Total paid	(19,163)	(17,929)
Net balance, end of period	16,675	15,609
Add: Reinsurance recoverables	2,392	2,189
Balance, end of period (included in future policy benefits and other policy-related balances)	$ 19,067	$ 17,798

Closed Block (Liabilities and A

Closed Block (Liabilities and Assets) (Details) - USD ($) $ in Millions	Sep. 30, 2019	Dec. 31, 2018	Dec. 31, 2017
Closed Block Liabilities
Future policy benefits	$ 39,477	$ 40,032
Other policy-related balances	438	317
Policyholder dividends payable	453	431
Policyholder dividend obligation	2,370	428	$ 2,121
Deferred income tax liability	61	28
Other liabilities	116	328
Total closed block liabilities	42,915	41,564
Assets Designated to the Closed Block
Fixed maturity securities available-for-sale, at estimated fair value	26,365	25,354
Equity securities, at estimated fair value	63	61
Contractholder-directed equity securities and fair value option securities, at estimated fair value	50	43
Mortgage loans	6,910	6,778
Policy loans	4,493	4,527
Real estate and real estate joint ventures	540	544
Other invested assets	822	643
Total investments	39,243	37,950
Assets Designated to Closed Block, Cash and Cash Equivalents	154	0
Accrued investment income	438	443
Premiums, reinsurance and other receivables	66	83
Current income tax recoverable	81	69
Total assets designated to the closed block	39,982	38,545
Excess of closed block liabilities over assets designated to the closed block	2,933	3,019
Amounts included in AOCI:
Unrealized investment gains (losses), net of income tax	2,596	1,089
Unrealized gains (losses) on derivatives, net of income tax	169	86
Allocated to policyholder dividend obligation, net of income tax	(1,872)	(338)
Total amounts included in AOCI	893	837
Maximum future earnings to be recognized from closed block assets and liabilities	$ 3,826	$ 3,856

Closed Block (Policyholder Divi

Closed Block (Policyholder Dividend Obligation) (Details) - USD ($) $ in Millions	9 Months Ended	12 Months Ended
	Sep. 30, 2019	Dec. 31, 2018
Closed block policyholder dividend obligation
Balance, beginning of period	$ 428	$ 2,121
Change in unrealized investment and derivative gains (losses)	1,942	(1,693)
Balance, end of period	$ 2,370	$ 428

Closed Block (Revenues and Expe

Closed Block (Revenues and Expenses) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Revenues
Premiums	$ 396	$ 405	$ 1,153	$ 1,202
Net investment income	428	443	1,303	1,318
Net investment gains (losses)	3	7	(2)	(46)
Net derivative gains (losses)	11	2	23	12
Total revenues	838	857	2,477	2,486
Expenses
Policyholder benefits and claims	564	641	1,666	1,808
Policyholder dividends	229	241	688	723
Other expenses	27	29	84	88
Total expenses	820	911	2,438	2,619
Revenues, net of expenses before provision for income tax expense (benefit)	18	(54)	39	(133)
Provision for income tax expense (benefit)	3	(12)	7	(29)
Revenues, net of expenses and provision for income tax expense (benefit)	$ 15	$ (42)	$ 32	$ (104)

Investments (Fixed Maturity Sec

Investments (Fixed Maturity Securities Available-For-Sale by Sector) (Details) - USD ($) $ in Millions	Sep. 30, 2019	Dec. 31, 2018
Debt Securities, Available-for-sale [Line Items]
Cost or Amortized Cost	$ 293,130	$ 286,816
Gross Unrealized OTTI Loss	37	25
Estimated Fair Value of Fixed Maturity Securities AFS	326,049	298,265
Fixed Maturity Securities
Debt Securities, Available-for-sale [Line Items]
Gross Unrealized Gain	34,964	17,404
Gross Unrealized Temporary Loss	2,082	5,980
Gross Unrealized OTTI Loss	(37)	(25)
U.S. corporate
Debt Securities, Available-for-sale [Line Items]
Cost or Amortized Cost	78,243	77,761
Gross Unrealized Gain	9,194	3,467
Gross Unrealized Temporary Loss	323	2,280
Gross Unrealized OTTI Loss	0	0
Estimated Fair Value of Fixed Maturity Securities AFS	87,114	78,948
Foreign government
Debt Securities, Available-for-sale [Line Items]
Cost or Amortized Cost	58,318	56,353
Gross Unrealized Gain	9,663	6,406
Gross Unrealized Temporary Loss	434	471
Gross Unrealized OTTI Loss	0	0
Estimated Fair Value of Fixed Maturity Securities AFS	67,547	62,288
Foreign corporate
Debt Securities, Available-for-sale [Line Items]
Cost or Amortized Cost	58,699	56,290
Gross Unrealized Gain	5,523	2,438
Gross Unrealized Temporary Loss	1,122	2,025
Gross Unrealized OTTI Loss	0	0
Estimated Fair Value of Fixed Maturity Securities AFS	63,100	56,703
U.S. government and agency
Debt Securities, Available-for-sale [Line Items]
Cost or Amortized Cost	34,963	37,030
Gross Unrealized Gain	5,853	2,756
Gross Unrealized Temporary Loss	14	464
Gross Unrealized OTTI Loss	0	0
Estimated Fair Value of Fixed Maturity Securities AFS	40,802	39,322
RMBS
Debt Securities, Available-for-sale [Line Items]
Cost or Amortized Cost	27,889	27,409
Gross Unrealized Gain	1,728	920
Gross Unrealized Temporary Loss	63	394
Gross Unrealized OTTI Loss	(37)	(26)
Estimated Fair Value of Fixed Maturity Securities AFS	29,591	27,961
ABS
Debt Securities, Available-for-sale [Line Items]
Cost or Amortized Cost	14,319	12,552
Gross Unrealized Gain	111	74
Gross Unrealized Temporary Loss	85	153
Gross Unrealized OTTI Loss	0	1
Estimated Fair Value of Fixed Maturity Securities AFS	14,345	12,472
Municipals
Debt Securities, Available-for-sale [Line Items]
Cost or Amortized Cost	10,600	10,376
Gross Unrealized Gain	2,348	1,228
Gross Unrealized Temporary Loss	6	71
Gross Unrealized OTTI Loss	0	0
Estimated Fair Value of Fixed Maturity Securities AFS	12,942	11,533
CMBS
Debt Securities, Available-for-sale [Line Items]
Cost or Amortized Cost	10,099	9,045
Gross Unrealized Gain	544	115
Gross Unrealized Temporary Loss	35	122
Gross Unrealized OTTI Loss	0	0
Estimated Fair Value of Fixed Maturity Securities AFS	$ 10,608	$ 9,038

Investments (Maturities of Fixe

Investments (Maturities of Fixed Maturity Securities) (Details) - USD ($) $ in Millions	Sep. 30, 2019	Dec. 31, 2018
Available-for-sale Securities, Debt Maturities [Abstract]
Amortized Cost, Due in one year or less	$ 17,217
Amortized Cost, Due after one year through five years	48,060
Amortized Cost, Due after five years through ten years	58,619
Amortized Cost, Due after ten years	116,927
Amortized Cost, Structured Securities	52,307
Amortized Cost, Subtotal	293,130	$ 286,816
Estimated Fair Value, Due in one year or less	17,280
Estimated Fair Value, Due after one year through five years	50,027
Estimated Fair Value, Due after five years through ten years	63,869
Estimated Fair Value, Due after ten years	140,329
Estimated Fair Value, Structured Securities	54,544
Estimated Fair Value of Fixed Maturity Securities AFS	$ 326,049	$ 298,265

Investments (Continuous Gross U

Investments (Continuous Gross Unrealized Losses for Fixed Maturity Securities Available-For-Sale) (Details) $ in Millions	Sep. 30, 2019USD ($)	Dec. 31, 2018USD ($)
Debt Securities, Available-for-sale [Line Items]
Total number of securities in an unrealized loss position less than 12 months	1,869	6,913
Total number of securities in an unrealized loss position equal to or greater than 12 months	1,414	2,335
Fixed Maturity Securities
Debt Securities, Available-for-sale [Line Items]
Less than 12 months Estimated Fair Value	$ 19,967	$ 83,208
Less than 12 months Gross Unrealized Loss	692	3,565
Equal to or Greater than 12 Months Estimated Fair Value	15,585	31,301
Equal to or Greater than 12 Months Gross Unrealized Loss	1,353	2,390
U.S. corporate
Debt Securities, Available-for-sale [Line Items]
Less than 12 months Estimated Fair Value	3,320	32,430
Less than 12 months Gross Unrealized Loss	110	1,663
Equal to or Greater than 12 Months Estimated Fair Value	2,361	5,826
Equal to or Greater than 12 Months Gross Unrealized Loss	213	617
Foreign government
Debt Securities, Available-for-sale [Line Items]
Less than 12 months Estimated Fair Value	2,504	4,392
Less than 12 months Gross Unrealized Loss	314	243
Equal to or Greater than 12 Months Estimated Fair Value	1,312	2,902
Equal to or Greater than 12 Months Gross Unrealized Loss	120	228
Foreign corporate
Debt Securities, Available-for-sale [Line Items]
Less than 12 months Estimated Fair Value	4,079	19,564
Less than 12 months Gross Unrealized Loss	199	1,230
Equal to or Greater than 12 Months Estimated Fair Value	7,398	5,765
Equal to or Greater than 12 Months Gross Unrealized Loss	923	795
U.S. government and agency
Debt Securities, Available-for-sale [Line Items]
Less than 12 months Estimated Fair Value	1,860	6,813
Less than 12 months Gross Unrealized Loss	11	58
Equal to or Greater than 12 Months Estimated Fair Value	149	8,937
Equal to or Greater than 12 Months Gross Unrealized Loss	3	406
RMBS
Debt Securities, Available-for-sale [Line Items]
Less than 12 months Estimated Fair Value	1,912	6,506
Less than 12 months Gross Unrealized Loss	11	120
Equal to or Greater than 12 Months Estimated Fair Value	813	6,423
Equal to or Greater than 12 Months Gross Unrealized Loss	15	248
ABS
Debt Securities, Available-for-sale [Line Items]
Less than 12 months Estimated Fair Value	4,949	8,230
Less than 12 months Gross Unrealized Loss	39	138
Equal to or Greater than 12 Months Estimated Fair Value	3,083	392
Equal to or Greater than 12 Months Gross Unrealized Loss	46	16
Municipals
Debt Securities, Available-for-sale [Line Items]
Less than 12 months Estimated Fair Value	205	1,380
Less than 12 months Gross Unrealized Loss	3	46
Equal to or Greater than 12 Months Estimated Fair Value	31	349
Equal to or Greater than 12 Months Gross Unrealized Loss	3	25
CMBS
Debt Securities, Available-for-sale [Line Items]
Less than 12 months Estimated Fair Value	1,138	3,893
Less than 12 months Gross Unrealized Loss	5	67
Equal to or Greater than 12 Months Estimated Fair Value	438	707
Equal to or Greater than 12 Months Gross Unrealized Loss	$ 30	$ 55

Investments (Equity Securities)

Investments (Equity Securities) (Details) - USD ($) $ in Millions	Sep. 30, 2019	Dec. 31, 2018
Debt Securities, Available-for-sale [Line Items]
Equity securities	$ 1,341	$ 1,440
Percentage of Equity Securities	100.00%	100.00%
Equity Securities
Debt Securities, Available-for-sale [Line Items]
Equity securities	$ 1,341	$ 1,440
Common Stock
Debt Securities, Available-for-sale [Line Items]
Equity securities	$ 938	$ 1,037
Percentage of Equity Securities	69.90%	72.00%
Non-redeemable Preferred Stock
Debt Securities, Available-for-sale [Line Items]
Equity securities	$ 403	$ 403
Percentage of Equity Securities	30.10%	28.00%

Investments (Mortgage Loans by

Investments (Mortgage Loans by Portfolio Segment) (Details) - USD ($) $ in Millions	Sep. 30, 2019	Dec. 31, 2018	Sep. 30, 2018	Dec. 31, 2017
Accounts, Notes, Loans and Financing Receivable [Line Items]
Mortgage Loans, Gross	$ 79,091	$ 75,795
Percentage Of Mortgage Loans Held For Investment To Mortgage Loans On Real Estate Commercial And Consumer Net	100.10%	100.10%
Allowance for Loan and Lease Losses, Real Estate	$ 350	$ 342	$ 336	$ 314
Percentage Of Allowance For Loan And Lease Losses Real Estate To Mortgage Loans On Real Estate Commercial And Consumer Net	(0.40%)	(0.50%)
Loans and Leases Receivable, Net Amount	$ 78,741	$ 75,453
Percentage Of Mortgage Loans Held For Investment Net To Mortgage Loans On Real Estate Commercial And Consumer Net	99.70%	99.60%
Mortgage Loans on Real Estate, Commercial and Consumer, Net	$ 78,959	$ 75,752
Percentage Of Loans And Leases Receivable Consumer Other To Mortgage Loans On Real Estate Commercial And Consumer Net	0.30%	0.40%
Percentage Of Mortgage Loans On Real Estate To Mortgage Loans On Real Estate Commercial And Consumer Net	100.00%	100.00%
Residential mortgage loans - FVO
Accounts, Notes, Loans and Financing Receivable [Line Items]
Mortgage Loans on Real Estate, Commercial and Consumer, Net	$ 218	$ 299
Agricultural Mortgage Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Mortgage Loans, Gross	$ 15,752	$ 14,905
Percentage Of Mortgage Loans, Gross	19.90%	19.70%
Allowance for Loan and Lease Losses, Real Estate	$ 48	$ 46	42	41
Commercial Mortgage Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Mortgage Loans, Gross	$ 49,898	$ 48,463
Percentage Of Mortgage Loans, Gross	63.20%	64.00%
Allowance for Loan and Lease Losses, Real Estate	$ 245	$ 238	232	214
Residential Mortgage Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Mortgage Loans, Gross	$ 13,441	$ 12,427
Percentage Of Mortgage Loans, Gross	17.00%	16.40%
Allowance for Loan and Lease Losses, Real Estate	$ 57	$ 58	$ 62	$ 59

Investments (Mortgage Loans and

Investments (Mortgage Loans and Valuation Allowance by Portfolio Segment) (Details) - USD ($) $ in Millions	Sep. 30, 2019	Dec. 31, 2018
Accounts, Notes, Loans and Financing Receivable [Line Items]
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	$ 13	$ 31
Impaired Financing Receivable, with Related Allowance, Recorded Investment	13	31
Impaired Financing Receivable, Related Allowance	1	3
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	712	600
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	608	555
Financing Receivable, Collectively Evaluated for Impairment	78,470	75,209
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	349	339
Impaired Financing Receivable, Recorded Investment	620	583
Agricultural Mortgage Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	13	31
Impaired Financing Receivable, with Related Allowance, Recorded Investment	13	31
Impaired Financing Receivable, Related Allowance	1	3
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	195	169
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	194	169
Financing Receivable, Collectively Evaluated for Impairment	15,545	14,705
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	47	43
Impaired Financing Receivable, Recorded Investment	206	197
Commercial Mortgage Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	0	0
Impaired Financing Receivable, with Related Allowance, Recorded Investment	0	0
Impaired Financing Receivable, Related Allowance	0	0
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	0	0
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	0	0
Financing Receivable, Collectively Evaluated for Impairment	49,898	48,463
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	245	238
Impaired Financing Receivable, Recorded Investment	0	0
Residential Mortgage Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	0	0
Impaired Financing Receivable, with Related Allowance, Recorded Investment	0	0
Impaired Financing Receivable, Related Allowance	0	0
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	517	431
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	414	386
Financing Receivable, Collectively Evaluated for Impairment	13,027	12,041
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	57	58
Impaired Financing Receivable, Recorded Investment	$ 414	$ 386

Investments (Valuation Allowanc

Investments (Valuation Allowance Rollforward by Portfolio Segment) (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Accounts, Notes, Loans and Financing Receivable [Line Items]
Balance, beginning of period	$ 342	$ 314
Provision (release)	20	28
Charge-offs, net of recoveries	(12)	(6)
Balance, end of period	350	336
Agricultural Mortgage Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Balance, beginning of period	46	41
Provision (release)	7	1
Charge-offs, net of recoveries	(5)	0
Balance, end of period	48	42
Commercial Mortgage Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Balance, beginning of period	238	214
Provision (release)	7	18
Charge-offs, net of recoveries	0	0
Balance, end of period	245	232
Residential Mortgage Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Balance, beginning of period	58	59
Provision (release)	6	9
Charge-offs, net of recoveries	(7)	(6)
Balance, end of period	$ 57	$ 62

Investments (Credit Quality of

Investments (Credit Quality of Commercial Mortgage Loans) (Details) - USD ($) $ in Millions	Sep. 30, 2019	Dec. 31, 2018
Accounts, Notes, Loans and Financing Receivable [Line Items]
Mortgage Loans, Gross	$ 79,091	$ 75,795
Loans Receivable Commercial Mortgage Percentage	100.00%	100.00%
Estimated Fair Value Commercial Mortgage Percentage	100.00%	100.00%
Less than 65%
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Receivable Commercial Mortgage Percentage	85.30%	85.20%
Estimated Fair Value Commercial Mortgage Percentage	85.70%	85.30%
65% to 75%
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Receivable Commercial Mortgage Percentage	12.00%	12.00%
Estimated Fair Value Commercial Mortgage Percentage	11.80%	12.00%
76% to 80%
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Receivable Commercial Mortgage Percentage	1.30%	1.40%
Estimated Fair Value Commercial Mortgage Percentage	1.20%	1.40%
Greater than 80%
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Receivable Commercial Mortgage Percentage	1.40%	1.40%
Estimated Fair Value Commercial Mortgage Percentage	1.30%	1.30%
Commercial Mortgage Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Mortgage Loans, Gross	$ 49,898	$ 48,463
Fair Value Mortgage Loans Net Not On Recurring Basis	51,984	48,747
Commercial Mortgage Loans | Greater than 1.20x
Accounts, Notes, Loans and Financing Receivable [Line Items]
Mortgage Loans, Gross	47,854	47,069
Commercial Mortgage Loans | 1.00x - 1.20x
Accounts, Notes, Loans and Financing Receivable [Line Items]
Mortgage Loans, Gross	1,059	1,212
Commercial Mortgage Loans | Less than 1.00x
Accounts, Notes, Loans and Financing Receivable [Line Items]
Mortgage Loans, Gross	985	182
Commercial Mortgage Loans | Less than 65%
Accounts, Notes, Loans and Financing Receivable [Line Items]
Mortgage Loans, Gross	42,583	41,288
Fair Value Mortgage Loans Net Not On Recurring Basis	44,529	41,599
Commercial Mortgage Loans | Less than 65% | Greater than 1.20x
Accounts, Notes, Loans and Financing Receivable [Line Items]
Mortgage Loans, Gross	41,317	40,360
Commercial Mortgage Loans | Less than 65% | 1.00x - 1.20x
Accounts, Notes, Loans and Financing Receivable [Line Items]
Mortgage Loans, Gross	754	827
Commercial Mortgage Loans | Less than 65% | Less than 1.00x
Accounts, Notes, Loans and Financing Receivable [Line Items]
Mortgage Loans, Gross	512	101
Commercial Mortgage Loans | 65% to 75%
Accounts, Notes, Loans and Financing Receivable [Line Items]
Mortgage Loans, Gross	5,970	5,815
Fair Value Mortgage Loans Net Not On Recurring Basis	6,150	5,849
Commercial Mortgage Loans | 65% to 75% | Greater than 1.20x
Accounts, Notes, Loans and Financing Receivable [Line Items]
Mortgage Loans, Gross	5,708	5,790
Commercial Mortgage Loans | 65% to 75% | 1.00x - 1.20x
Accounts, Notes, Loans and Financing Receivable [Line Items]
Mortgage Loans, Gross	54	0
Commercial Mortgage Loans | 65% to 75% | Less than 1.00x
Accounts, Notes, Loans and Financing Receivable [Line Items]
Mortgage Loans, Gross	208	25
Commercial Mortgage Loans | 76% to 80%
Accounts, Notes, Loans and Financing Receivable [Line Items]
Mortgage Loans, Gross	650	688
Fair Value Mortgage Loans Net Not On Recurring Basis	634	664
Commercial Mortgage Loans | 76% to 80% | Greater than 1.20x
Accounts, Notes, Loans and Financing Receivable [Line Items]
Mortgage Loans, Gross	368	423
Commercial Mortgage Loans | 76% to 80% | 1.00x - 1.20x
Accounts, Notes, Loans and Financing Receivable [Line Items]
Mortgage Loans, Gross	17	209
Commercial Mortgage Loans | 76% to 80% | Less than 1.00x
Accounts, Notes, Loans and Financing Receivable [Line Items]
Mortgage Loans, Gross	265	56
Commercial Mortgage Loans | Greater than 80%
Accounts, Notes, Loans and Financing Receivable [Line Items]
Mortgage Loans, Gross	695	672
Fair Value Mortgage Loans Net Not On Recurring Basis	671	635
Commercial Mortgage Loans | Greater than 80% | Greater than 1.20x
Accounts, Notes, Loans and Financing Receivable [Line Items]
Mortgage Loans, Gross	461	496
Commercial Mortgage Loans | Greater than 80% | 1.00x - 1.20x
Accounts, Notes, Loans and Financing Receivable [Line Items]
Mortgage Loans, Gross	234	176
Commercial Mortgage Loans | Greater than 80% | Less than 1.00x
Accounts, Notes, Loans and Financing Receivable [Line Items]
Mortgage Loans, Gross	$ 0	$ 0

Investments (Credit Quality o_2

Investments (Credit Quality of Agricultural and Residential Mortgage Loans) (Details) - USD ($) $ in Millions	Sep. 30, 2019	Dec. 31, 2018
Accounts, Notes, Loans and Financing Receivable [Line Items]
Mortgage Loans, Gross	$ 79,091	$ 75,795
Loans Receivable Agricultural Mortgage Percentage	100.00%	100.00%
Loans Receivable Residential Mortgage Percentage	100.00%	100.00%
Mortgage Loans in Process of Foreclosure, Amount	$ 118	$ 140
Less than 65%
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Receivable Agricultural Mortgage Percentage	93.40%	92.00%
65% to 75%
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Receivable Agricultural Mortgage Percentage	6.00%	7.70%
76% to 80%
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Receivable Agricultural Mortgage Percentage	0.50%	0.20%
Greater than 80%
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Receivable Agricultural Mortgage Percentage	0.10%	0.10%
Performing
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Receivable Residential Mortgage Percentage	96.80%	96.20%
Nonperforming
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Receivable Residential Mortgage Percentage	3.20%	3.80%
Residential Mortgage Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Mortgage Loans, Gross	$ 13,441	$ 12,427
Residential Mortgage Loans | Performing
Accounts, Notes, Loans and Financing Receivable [Line Items]
Mortgage Loans, Gross	13,007	11,956
Residential Mortgage Loans | Nonperforming
Accounts, Notes, Loans and Financing Receivable [Line Items]
Mortgage Loans, Gross	434	471
Agricultural Mortgage Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Mortgage Loans, Gross	15,752	14,905
Agricultural Mortgage Loans | Less than 65%
Accounts, Notes, Loans and Financing Receivable [Line Items]
Mortgage Loans, Gross	14,711	13,704
Agricultural Mortgage Loans | 65% to 75%
Accounts, Notes, Loans and Financing Receivable [Line Items]
Mortgage Loans, Gross	952	1,145
Agricultural Mortgage Loans | 76% to 80%
Accounts, Notes, Loans and Financing Receivable [Line Items]
Mortgage Loans, Gross	78	33
Agricultural Mortgage Loans | Greater than 80%
Accounts, Notes, Loans and Financing Receivable [Line Items]
Mortgage Loans, Gross	$ 11	$ 23

Investments (Past Due and Inter

Investments (Past Due and Interest Accrual Status of Mortgage Loans) (Details) - USD ($) $ in Millions	Sep. 30, 2019	Dec. 31, 2018
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past Due	$ 636	$ 684
Greater than 90 Days Past Due and Still Accruing Interest	166	153
Nonaccrual	661	717
Agricultural Mortgage Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past Due	202	204
Greater than 90 Days Past Due and Still Accruing Interest	129	109
Nonaccrual	88	105
Commercial Mortgage Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past Due	0	9
Greater than 90 Days Past Due and Still Accruing Interest	0	9
Nonaccrual	176	176
Residential Mortgage Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past Due	434	471
Greater than 90 Days Past Due and Still Accruing Interest	37	35
Nonaccrual	$ 397	$ 436

Investments (Real Estate and Re

Investments (Real Estate and Real Estate Joint Ventures) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Real Estate [Line Items]
Leased real estate investments, Carrying Value	$ 4,516		$ 4,516		$ 4,132
Other real estate investments, Carrying Value	488		488		461
Real estate joint ventures, Carrying Value	5,242		5,242		5,105
Real estate and real estate joint ventures (includes $250 and $0, respectively, of real estate held-for-sale)	10,246		10,246		$ 9,698
Real Estate and Real Estate Joint Ventures
Real Estate [Line Items]
Gross Investment Income, Operating	181	$ 175	490	$ 538
Leased real estate investments
Real Estate [Line Items]
Operating Lease, Lease Income	103	103	285	311
Other real estate investments
Real Estate [Line Items]
Operating Lease, Lease Income	45	45	135	135
Real estate joint ventures
Real Estate [Line Items]
Income (Loss) from Equity Method Investments	$ 33	$ 27	$ 70	$ 92

Investments (Leased Real Estate

Investments (Leased Real Estate Investments - Operating Leases) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Schedule of Operating Leases by Property Type [Line Items]
Leased real estate investments, Carrying Value	$ 4,516		$ 4,516		$ 4,132
Office
Schedule of Operating Leases by Property Type [Line Items]
Leased real estate investments, Carrying Value	2,098		2,098		1,999
Operating Lease, Lease Income	45	$ 42	131	$ 131
Retail
Schedule of Operating Leases by Property Type [Line Items]
Leased real estate investments, Carrying Value	1,151		1,151		1,006
Operating Lease, Lease Income	32	21	81	72
Apartment
Schedule of Operating Leases by Property Type [Line Items]
Leased real estate investments, Carrying Value	255		255		253
Operating Lease, Lease Income	6	23	16	60
Industrial
Schedule of Operating Leases by Property Type [Line Items]
Leased real estate investments, Carrying Value	304		304		223
Operating Lease, Lease Income	11	10	33	29
Land
Schedule of Operating Leases by Property Type [Line Items]
Leased real estate investments, Carrying Value	533		533		489
Operating Lease, Lease Income	5	5	15	14
Hotel
Schedule of Operating Leases by Property Type [Line Items]
Leased real estate investments, Carrying Value	94		94		94
Operating Lease, Lease Income	2	1	5	1
Other
Schedule of Operating Leases by Property Type [Line Items]
Leased real estate investments, Carrying Value	81		81		$ 68
Operating Lease, Lease Income	2	1	4	4
Leased real estate investments
Schedule of Operating Leases by Property Type [Line Items]
Operating Lease, Lease Income	$ 103	$ 103	$ 285	$ 311

Investments (Components of Leve

Investments (Components of Leveraged and and Direct Financing Leases) (Details) - USD ($) $ in Millions	Sep. 30, 2019	Dec. 31, 2018
Investments, Debt and Equity Securities [Abstract]
Leveraged Leases, Net Investment in Leveraged Leases Disclosure, Rental Receivables, Net	$ 700	$ 715
Leveraged Leases, Net Investment in Leveraged Leases Disclosure, Residual Value of Leased Assets	786	807
Investment In Leveraged Leases	1,486	1,522
Leveraged Leases, Net Investment in Leveraged Leases Disclosure, Deferred Income	(378)	(414)
Leveraged Leases, Net Investment in Leveraged Leases Disclosure, Investment in Leveraged Leases, Net	1,108	1,108
Direct Financing Lease, Lease Receivable	1,891	1,855
Direct Financing Lease, Unguaranteed Residual Asset	42	42
Investment In Direct Financing Leases	1,933	1,897
Direct Financing Lease, Deferred Selling Profit	(689)	(705)
Direct Financing Lease, Net Investment in Lease	1,244	$ 1,192
Capital Leases, Future Minimum Payments Receivable, Next Twelve Months	30
Capital Leases, Future Minimum Payments, Receivable in Two Years	104
Capital Leases, Future Minimum Payments, Receivable in Three Years	102
Capital Leases, Future Minimum Payments, Receivable in Four Years	124
Capital Leases, Future Minimum Payments, Receivable in Five Years	109
Capital Leases, Future Minimum Payments, Receivable Thereafter	1,400
Capital Leases, Future Minimum Payments Receivable	$ 1,900

Investments (Net investment inc

Investments (Net investment income on Leveraged and Direct Financing Leases) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Investments, Debt and Equity Securities [Abstract]
Leveraged Leases, Income Statement, Income from Leveraged Leases	$ 12	$ 12	$ 36	$ 35
Leveraged Leases, Income Statement, Income Tax Expense on Leveraged Leases	(3)	(2)	(8)	(7)
Leveraged Leases, Income (Loss)	9	10	28	28
Capital Leases, Income Statement, Direct Financing Lease Revenue	28	27	75	74
Direct Financing Leases Income Statement Tax Expense on Direct Financing Leases	(6)	(6)	(16)	(16)
Direct Financing Leases Income Statement Net Income from Direct Financing Leases	$ 22	$ 21	$ 59	$ 58

Investments (Net Unrealized Inv

Investments (Net Unrealized Investment Gains Losses) (Details) - USD ($) $ in Millions	Sep. 30, 2019	Dec. 31, 2018
Components of net unrealized investment gains (losses) included in accumulated other comprehensive loss
Fixed maturity securities AFS	$ 32,849	$ 11,356
Fixed maturity securities AFS with noncredit OTTI losses included in AOCI	37	25
Total fixed maturity securities AFS	32,886	11,381
Derivatives	3,675	2,127
Other	312	290
Subtotal	36,873	13,798
Future policy benefits	(1,713)	31
DAC, VOBA and DSI	(3,012)	(1,231)
Policyholder dividend obligation	(2,370)	(428)
Subtotal	(7,095)	(1,628)
Deferred income tax benefit (expense) related to noncredit OTTI losses recognized in AOCI	(5)	(3)
Deferred income tax benefit (expense)	(7,427)	(3,502)
Net unrealized investment gains (losses)	22,346	8,665
Net unrealized investment gains (losses) attributable to noncontrolling interests	(16)	(10)
Net unrealized investment gains (losses) attributable to MetLife, Inc.	$ 22,330	$ 8,655

Investments (Changes in Net Unr

Investments (Changes in Net Unrealized Investment Gains Losses) (Details) $ in Millions	9 Months Ended
	Sep. 30, 2019USD ($)
Changes In Net Unrealized Investment Gains Losses Included In Accumulated Other Comprehensive Loss [Abstract]
Balance, beginning of period	$ 8,655
Cumulative effects of changes in accounting principles, net of income tax	21
Fixed maturity securities AFS on which noncredit OTTI losses have been recognized	12
Unrealized investment gains (losses) during the period	23,037
Unrealized investment gains (losses) relating to:
Future policy benefits	(1,744)
DAC, VOBA and DSI	(1,781)
Policyholder dividend obligation	(1,942)
Deferred income tax benefit (expense) related to noncredit OTTI losses recognized in AOCI	(2)
Deferred income tax benefit (expense)	(3,920)
Net unrealized investment gains (losses)	22,336
Net unrealized investment gains (losses) attributable to noncontrolling interests	(6)
Balance, end of period	22,330
Change in net unrealized investment gains (losses)	13,681
Change in net unrealized investment gains (losses) attributable to noncontrolling interests	(6)
Change in net unrealized investment gains (losses) attributable to MetLife, Inc.	$ 13,675

Investments (Securities Lending

Investments (Securities Lending and Repurchase Agreements) (Details) - USD ($) $ in Millions	Sep. 30, 2019	Dec. 31, 2018
Securities Financing Transaction [Line Items]
Cash collateral received from counterparties	$ 19,001	$ 18,005
Reinvestment Portfolio at Estimated Fair Value	19,415	18,074
Security collateral on deposit from counterparties	105	78
Amortized cost
Securities Financing Transaction [Line Items]
Securities loaned	15,994	16,969
Estimated fair value
Securities Financing Transaction [Line Items]
Securities loaned	18,688	17,724
Repurchase Agreements
Securities Financing Transaction [Line Items]
Cash collateral received from counterparties	1,833	1,067
Reinvestment Portfolio at Estimated Fair Value	1,868	1,069
Repurchase Agreements | Amortized cost
Securities Financing Transaction [Line Items]
Securities Sold under Agreements to Repurchase	1,609	1,033
Repurchase Agreements | Estimated fair value
Securities Financing Transaction [Line Items]
Securities Sold under Agreements to Repurchase	$ 1,881	$ 1,093

Investments (Securities Lendi_2

Investments (Securities Lending and Repurchase Agreements Remaining Tenor) (Details) - USD ($) $ in Millions	Sep. 30, 2019	Dec. 31, 2018
Securities Financing Transaction [Line Items]
Transfers Accounted for as Secured Borrowings, Associated Liabilities, Carrying Amount	$ 19,001	$ 18,005
U.S. government and agency
Securities Financing Transaction [Line Items]
Transfers Accounted for as Secured Borrowings, Associated Liabilities, Carrying Amount	17,917	16,951
Foreign government
Securities Financing Transaction [Line Items]
Transfers Accounted for as Secured Borrowings, Associated Liabilities, Carrying Amount	1,017	975
RMBS
Securities Financing Transaction [Line Items]
Transfers Accounted for as Secured Borrowings, Associated Liabilities, Carrying Amount	67	79
Securities Financing Transaction, Fair Value | U.S. government and agency
Securities Financing Transaction [Line Items]
Securities Loaned, Not Subject to Master Netting Arrangement	3,900
Open (1)
Securities Financing Transaction [Line Items]
Transfers Accounted for as Secured Borrowings, Associated Liabilities, Carrying Amount	3,968	2,736
Open (1) | U.S. government and agency
Securities Financing Transaction [Line Items]
Transfers Accounted for as Secured Borrowings, Associated Liabilities, Carrying Amount	3,968	2,736
Open (1) | Foreign government
Securities Financing Transaction [Line Items]
Transfers Accounted for as Secured Borrowings, Associated Liabilities, Carrying Amount	0	0
Open (1) | RMBS
Securities Financing Transaction [Line Items]
Transfers Accounted for as Secured Borrowings, Associated Liabilities, Carrying Amount	0	0
1 Month or Less
Securities Financing Transaction [Line Items]
Transfers Accounted for as Secured Borrowings, Associated Liabilities, Carrying Amount	8,257	9,288
1 Month or Less | U.S. government and agency
Securities Financing Transaction [Line Items]
Transfers Accounted for as Secured Borrowings, Associated Liabilities, Carrying Amount	7,903	8,995
1 Month or Less | Foreign government
Securities Financing Transaction [Line Items]
Transfers Accounted for as Secured Borrowings, Associated Liabilities, Carrying Amount	287	214
1 Month or Less | RMBS
Securities Financing Transaction [Line Items]
Transfers Accounted for as Secured Borrowings, Associated Liabilities, Carrying Amount	67	79
Over 1 to 6 Months
Securities Financing Transaction [Line Items]
Transfers Accounted for as Secured Borrowings, Associated Liabilities, Carrying Amount	6,776	5,981
Over 1 to 6 Months | U.S. government and agency
Securities Financing Transaction [Line Items]
Transfers Accounted for as Secured Borrowings, Associated Liabilities, Carrying Amount	6,046	5,220
Over 1 to 6 Months | Foreign government
Securities Financing Transaction [Line Items]
Transfers Accounted for as Secured Borrowings, Associated Liabilities, Carrying Amount	730	761
Over 1 to 6 Months | RMBS
Securities Financing Transaction [Line Items]
Transfers Accounted for as Secured Borrowings, Associated Liabilities, Carrying Amount	0	0
Repurchase Agreements
Securities Financing Transaction [Line Items]
Transfers Accounted for as Secured Borrowings, Associated Liabilities, Carrying Amount	1,833	1,067
Repurchase Agreements | U.S. government and agency
Securities Financing Transaction [Line Items]
Transfers Accounted for as Secured Borrowings, Associated Liabilities, Carrying Amount	1,760	1,000
Repurchase Agreements | All other corporate and government
Securities Financing Transaction [Line Items]
Transfers Accounted for as Secured Borrowings, Associated Liabilities, Carrying Amount	73	67
Repurchase Agreements | Open (1)
Securities Financing Transaction [Line Items]
Transfers Accounted for as Secured Borrowings, Associated Liabilities, Carrying Amount	0	0
Repurchase Agreements | Open (1) | U.S. government and agency
Securities Financing Transaction [Line Items]
Transfers Accounted for as Secured Borrowings, Associated Liabilities, Carrying Amount	0	0
Repurchase Agreements | Open (1) | All other corporate and government
Securities Financing Transaction [Line Items]
Transfers Accounted for as Secured Borrowings, Associated Liabilities, Carrying Amount	0	0
Repurchase Agreements | 1 Month or Less
Securities Financing Transaction [Line Items]
Transfers Accounted for as Secured Borrowings, Associated Liabilities, Carrying Amount	1,794	1,000
Repurchase Agreements | 1 Month or Less | U.S. government and agency
Securities Financing Transaction [Line Items]
Transfers Accounted for as Secured Borrowings, Associated Liabilities, Carrying Amount	1,760	1,000
Repurchase Agreements | 1 Month or Less | All other corporate and government
Securities Financing Transaction [Line Items]
Transfers Accounted for as Secured Borrowings, Associated Liabilities, Carrying Amount	34	0
Repurchase Agreements | Over 1 to 6 Months
Securities Financing Transaction [Line Items]
Transfers Accounted for as Secured Borrowings, Associated Liabilities, Carrying Amount	39	67
Repurchase Agreements | Over 1 to 6 Months | U.S. government and agency
Securities Financing Transaction [Line Items]
Transfers Accounted for as Secured Borrowings, Associated Liabilities, Carrying Amount	0	0
Repurchase Agreements | Over 1 to 6 Months | All other corporate and government
Securities Financing Transaction [Line Items]
Transfers Accounted for as Secured Borrowings, Associated Liabilities, Carrying Amount	$ 39	$ 67

Investments (FHLB Boston Advanc

Investments (FHLB Boston Advance Agreements Remaining Tenor) (Details) - USD ($) $ in Millions	Sep. 30, 2019	Dec. 31, 2018
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Federal Home Loan Bank, Advances, Branch of FHLB Bank, Amount of Advances	$ 800	$ 800
Municipals
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Federal Home Loan Bank, Advances, Branch of FHLB Bank, Amount of Advances	800	800
Municipals | 1 Month or Less
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Federal Home Loan Bank, Advances, Branch of FHLB Bank, Amount of Advances	250	150
Municipals | Over 1 to 6 Months
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Federal Home Loan Bank, Advances, Branch of FHLB Bank, Amount of Advances	475	650
Municipals | 6 Months to 1 Year
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Federal Home Loan Bank, Advances, Branch of FHLB Bank, Amount of Advances	$ 75	$ 0

Investments (Invested Assets on

Investments (Invested Assets on Deposit, Held In Trust and Pledged as Collateral) (Details) - USD ($) $ in Millions	Sep. 30, 2019	Dec. 31, 2018
Investments, Debt and Equity Securities [Abstract]
Invested assets on deposit (regulatory deposits)	$ 1,976	$ 1,788
Invested assets held in trust (collateral financing arrangement and reinsurance agreements)	3,017	2,971
Securities Held as Collateral, at Fair Value	24,442	24,168
Total invested assets on deposit, held in trust and pledged as collateral	$ 29,435	$ 28,927

Investments (Consolidated Varia

Investments (Consolidated Variable Interest Entities) (Details) - USD ($) $ in Millions	Sep. 30, 2019	Dec. 31, 2018
Variable Interest Entity [Line Items]
Total Assets	$ 283	$ 202
Total Liabilities	6	6
Renewable energy partnership
Variable Interest Entity [Line Items]
Total Assets	101	102
Total Liabilities	0	0
Investment funds
Variable Interest Entity [Line Items]
Total Assets	162	79
Total Liabilities	1	1
Other
Variable Interest Entity [Line Items]
Total Assets	20	21
Total Liabilities	$ 5	$ 5

Investments (Unconsolidated Var

Investments (Unconsolidated Variable Interest Entities) (Details) - USD ($) $ in Millions	Sep. 30, 2019	Dec. 31, 2018
Variable Interest Entity [Line Items]
Carrying Amount Asset	$ 62,727	$ 56,649
Maximum Exposure to Loss	68,004	61,057
Tax Credits Guaranteed By Third Parties Amount That Reduces Maximum Exposure To Loss Related To Other Invested Assets	12	94
Other limited partnership interests
Variable Interest Entity [Line Items]
Carrying Amount Asset	6,357	5,641
Maximum Exposure to Loss	11,498	9,888
Other invested assets
Variable Interest Entity [Line Items]
Carrying Amount Asset	1,528	1,906
Maximum Exposure to Loss	1,662	2,063
Other
Variable Interest Entity [Line Items]
Carrying Amount Asset	428	296
Maximum Exposure to Loss	430	300
Structured securities (RMBS, CMBS, and ABS)
Variable Interest Entity [Line Items]
Carrying Amount Asset	52,710	47,874
Maximum Exposure to Loss	52,710	47,874
U.S. corporate and foreign corporate securities
Variable Interest Entity [Line Items]
Carrying Amount Asset	1,568	932
Maximum Exposure to Loss	1,568	932
Foreign government
Variable Interest Entity [Line Items]
Carrying Amount Asset	136	0
Maximum Exposure to Loss	$ 136	$ 0

Investments (Net Investment I_2

Investments (Net Investment Income) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Net Investment Income [Line Items]
Less: Investment expenses	$ 362	$ 333	$ 1,079	$ 950
Net investment income	4,623	4,486	14,224	12,704
Fixed Maturity Securities
Net Investment Income [Line Items]
Gross Investment Income, Operating	2,924	3,056	8,887	8,966
Equity Securities
Net Investment Income [Line Items]
Gross Investment Income, Operating	13	15	45	46
FVO Securities
Net Investment Income [Line Items]
Gross Investment Income, Operating	59	11	152	25
Mortgage loans
Net Investment Income [Line Items]
Gross Investment Income, Operating	930	859	2,785	2,466
Policy loans
Net Investment Income [Line Items]
Gross Investment Income, Operating	129	130	386	381
Real Estate and Real Estate Joint Ventures
Net Investment Income [Line Items]
Gross Investment Income, Operating	181	175	490	538
Other limited partnership interests
Net Investment Income [Line Items]
Gross Investment Income, Operating	277	227	643	554
Cash, cash equivalents and short-term investments
Net Investment Income [Line Items]
Gross Investment Income, Operating	117	112	358	279
Operating joint ventures
Net Investment Income [Line Items]
Gross Investment Income, Operating	10	2	66	34
Other
Net Investment Income [Line Items]
Gross Investment Income, Operating	95	83	244	283
Securities Investment
Net Investment Income [Line Items]
Gross Investment Income, Operating	4,735	4,670	14,056	13,572
Net investment income	4,373	4,337	12,977	12,622
FVO contractholder-directed unit-linked investments
Net Investment Income [Line Items]
Net investment income	250	149	1,247	82
Changes in estimated fair value included in net investment income	$ 185	$ 109	$ 850	$ (59)

Investments (Components of Net

Investments (Components of Net Investment Gains Losses) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Marketable Securities, Gain (Loss) [Abstract]
Fixed maturity securities AFS — net gains (losses) on sales and disposals	$ 102	$ 123	$ 226	$ (18)
Equity securities — net gains (losses) on sales and disposals	4	(58)	51	58
Change In Estimated Fair Value Of Equity Securities	13	76	71	(37)
Other net investment gains (losses):
Mortgage loans	(16)	4	(17)	(32)
Real estate and real estate joint ventures	96	40	102	154
Gains Losses On Sales Of Other Limited Partnerships	3	1	3	9
Other (2), (3)	(31)	12	(141)	(176)
Subtotal	151	181	265	(59)
Change In Estimated Fair Value Of Other Limited Partnership Interests And Real Estate Joint Ventures	(1)	12	(13)	6
Non-investment portfolio gains (losses) (4)	11	(76)	(15)	(390)
Gains Losses On Assets And Liabilities Held By Consolidated Securitizations Entities Under Fair Value Option And All Other Gains Losses	10	(64)	(28)	(384)
Total net investment gains (losses)	161	117	237	(443)
Changes In Estimated Fair Value Subsequent To Purchase For Equity Securities	27	15	111	12
Consumer Domestic Corporate Debt Securities
Marketable Securities, Gain (Loss) [Abstract]
Total OTTI losses recognized in earnings	0	(1)	0	(1)
Finance Corporate Debt Securities
Marketable Securities, Gain (Loss) [Abstract]
Total OTTI losses recognized in earnings	(1)	(7)	(1)	(7)
Industrial Domestic Corporate Debt Securities
Marketable Securities, Gain (Loss) [Abstract]
Total OTTI losses recognized in earnings	(8)	0	(16)	0
U.S. corporate and foreign corporate securities
Marketable Securities, Gain (Loss) [Abstract]
Total OTTI losses recognized in earnings	(9)	(8)	(17)	(8)
Foreign government
Marketable Securities, Gain (Loss) [Abstract]
Total OTTI losses recognized in earnings	(11)	(9)	(11)	(9)
RMBS
Marketable Securities, Gain (Loss) [Abstract]
Total OTTI losses recognized in earnings	0	0	(2)	0
Fixed Maturity Securities
Marketable Securities, Gain (Loss) [Abstract]
Total OTTI losses recognized in earnings	(20)	(17)	(30)	(17)
Net investment gains (losses)	82	106	196	(35)
Equity Securities
Marketable Securities, Gain (Loss) [Abstract]
Net investment gains (losses)	$ 17	$ 18	122	21
Tax credit partnerships
Marketable Securities, Gain (Loss) [Abstract]
Total OTTI losses recognized in earnings			(92)
Lease Agreements
Marketable Securities, Gain (Loss) [Abstract]
Total OTTI losses recognized in earnings				(105)
Brighthouse Financial, Inc | FVO Common Stock
Other net investment gains (losses):
Non-investment portfolio gains (losses) (4)				(327)
Other limited partnership interests
Marketable Securities, Gain (Loss) [Abstract]
Total OTTI losses recognized in earnings				$ (83)
Other net investment gains (losses):
Other (2), (3)			$ 46

Investments (Sales or Disposals

Investments (Sales or Disposals and Impairments of Fixed Maturity AFS Securities) (Details) - Fixed Maturity Securities - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Debt Securities, Available-for-sale [Line Items]
Proceeds	$ 9,510	$ 19,003	$ 39,230	$ 58,256
Gross investment gains	165	234	632	489
Gross investment losses	(63)	(111)	(406)	(507)
Total OTTI losses recognized in earnings	(20)	(17)	(30)	(17)
Net investment gains (losses)	$ 82	$ 106	$ 196	$ (35)

Investments (Credit Loss Rollfo

Investments (Credit Loss Rollforward) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Roll Forward]
Balance, beginning of period	$ 77	$ 111	$ 89	$ 138
Sales (maturities, pay downs or prepayments) of securities previously impaired as credit loss OTTI	(3)	(4)	(14)	(30)
Increase in cash flows — accretion of previous credit loss OTTI	0	0	(1)	(1)
Balance, end of period	$ 74	$ 107	$ 74	$ 107

Investments (Fixed Maturity S_2

Investments (Fixed Maturity Securities Available-For-Sale - Narrative) (Details) - USD ($) $ in Millions	Sep. 30, 2019	Dec. 31, 2018
Debt Securities, Available-for-sale [Line Items]
Estimated Fair Value of Fixed Maturity Securities AFS	$ 326,049	$ 298,265
Non-income producing fixed maturity securities
Debt Securities, Available-for-sale [Line Items]
Estimated Fair Value of Fixed Maturity Securities AFS	35	15
Gross Unrealized Gains (Losses)	$ 1	$ (1)

Investments (Evaluation of Avai

Investments (Evaluation of Available-For-Sale Securities for OTTI and Evaluating Temporarily Impaired AFS Securities - Narrative) (Details) $ in Millions	9 Months Ended
	Sep. 30, 2019USD ($)Contracts
Debt Securities, Available-for-sale [Line Items]
Debt Securities Available For Sale With Gross Unrealized Loss Of Equal To Or Greater Than Stated Percentage	20.00%
Fixed Maturity Securities
Debt Securities, Available-for-sale [Line Items]
Change in Gross Unrealized Temporary Loss	$ (3,900)
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss	2,000
20% or more | Six months or greater | Fixed Maturity Securities
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss	$ 176
Number of Securities | Contracts	51
Investment Grade | 20% or more | Six months or greater | Fixed Maturity Securities
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss	$ 101
Number of Securities | Contracts	17
Percentage of gross unrealized loss	57.00%
Below Investment Grade | 20% or more | Six months or greater | Fixed Maturity Securities
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss	$ 75
Number of Securities | Contracts	34
Percentage of gross unrealized loss	43.00%

Investments (Mortgage Loans - N

Investments (Mortgage Loans - Narrative) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Accounts, Notes, Loans and Financing Receivable [Line Items]
Unamortized Loan Commitment and Origination Fees and Unamortized Discounts or Premiums	$ 887		$ 887		$ 944
Financing Receivable, Purchase	$ 1,100	$ 724	$ 3,000	$ 1,700
Percentage of Mortgage Loans Classified as Performing	99.00%		99.00%		99.00%
Commercial Mortgage Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Impaired Financing Receivable, Average Recorded Investment	$ 0	0	$ 0	0
Residential Mortgage Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Impaired Financing Receivable, Average Recorded Investment	409	370	401	350
Agricultural Mortgage Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Impaired Financing Receivable, Average Recorded Investment	$ 214	$ 124	$ 188	$ 104

Investments (Real Estate and _2

Investments (Real Estate and Real Estate Joint Ventures - Narrative) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Real Estate [Line Items]
Real Estate Acquired Through Foreclosure	$ 43		$ 43		$ 45
Real Estate Investment Property, Net	1,000		1,000		$ 931
Real Estate and Real Estate Joint Ventures
Real Estate [Line Items]
Depreciation	$ 28	$ 22	$ 76	$ 69

Investments (Operating Leases -

Investments (Operating Leases - Narrative) (Details) $ in Millions	Sep. 30, 2019USD ($)
Investments, Debt and Equity Securities [Abstract]
Operating Leases, Future Minimum Payments Receivable, Current	$ 77
Operating Leases, Future Minimum Payments Receivable, in Two Years	246
Operating Leases, Future Minimum Payments Receivable, in Three Years	193
Operating Leases, Future Minimum Payments Receivable, in Four Years	163
Operating Leases, Future Minimum Payments Receivable, in Five Years	142
Operating Leases, Future Minimum Payments Receivable, Thereafter	992
Operating Leases, Future Minimum Payments Receivable	$ 1,800

Investments (Leveraged and Dire

Investments (Leveraged and Direct Financing Leases - Narrative) (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2019	Dec. 31, 2018
Lessor, Lease, Description [Line Items]
Loans and Leases Receivable, Other Information	The payment periods for leveraged leases generally range from one to 15 years but in certain circumstances can be over 25 years, while the payment periods for direct financing leases generally range from one to 25 years but in certain circumstances can be over 25 years
Leveraged Leases, Net Investment in Leveraged Leases Disclosure, Deferred Taxes Arising from Leveraged Leases	$ 500	$ 519
Minimum | Performing
Lessor, Lease, Description [Line Items]
Loans and Leases Receivable, Ratio of Performing Loans to All Loans	99.00%	99.00%

Investments (Cash Equivalents -

Investments (Cash Equivalents - Narrative) (Details) - USD ($) $ in Billions	Sep. 30, 2019	Dec. 31, 2018
Investments, Debt and Equity Securities [Abstract]
Cash equivalents	$ 11.6	$ 9

Investments (Concentrations of

Investments (Concentrations of Credit Risk - Narrative) (Details) - USD ($) $ in Billions	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
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%	10.00%	10.00%
KOREA, REPUBLIC OF | Foreign government
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items]
Fixed maturity securities AFS	$ 7.4		$ 7.4		$ 7.1
JAPAN | Foreign government
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items]
Fixed maturity securities AFS	$ 33.6		$ 33.6		$ 30.2

Investments (FHLB of Boston Adv

Investments (FHLB of Boston Advance Agreements Narrative) (Details) - USD ($) $ in Millions	Sep. 30, 2019	Dec. 31, 2018
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Federal Home Loan Bank, Advances, General Debt Obligations, Disclosures, Collateral Pledged		$ 1,200
Federal Home Loan Bank, Advances, Branch of FHLB Bank, Amount of Advances	$ 800	800
Municipals
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Federal Home Loan Bank, Advances, General Debt Obligations, Disclosures, Collateral Pledged	1,200
Federal Home Loan Bank, Advances, Branch of FHLB Bank, Amount of Advances	800	800
CMBS
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Federal Home Loan Bank, Advances, General Debt Obligations, Disclosures, Collateral Pledged	11
Debt Securities
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Federal Home Loan Bank, Advances, Branch of FHLB Bank, Amount of Advances	840	799
Investment in Federal Home Loan Bank Stock
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Federal Home Loan Bank, Advances, Branch of FHLB Bank, Amount of Advances	$ 33	$ 33

Investments (Invested Assets _2

Investments (Invested Assets on Deposit, Held in Trust and Pledged as Collateral - Narrative) (Details) - USD ($) $ in Millions	Sep. 30, 2019	Dec. 31, 2018
Investments, Debt and Equity Securities [Abstract]
Federal Home Loan Bank Stock	$ 800	$ 793

Investments Investments (Variab

Investments Investments (Variable Interest Entities - Narrative) (Details) - RMBS - USD ($) $ in Millions	3 Months Ended	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Variable Interest Entity [Line Items]
Proceeds from securitization of Loans Held for Investments Carry Value	$ 451	$ 443	$ 451
Proceeds from Securitizations of Loans Held-for-investment	478	467	478
Gain (Loss) on Securitization of Financial Assets	27	24	27
Transfers of Financial Assets Accounted for as Sale, Initial Fair Value of Assets Obtained as Proceeds	$ 102	$ 136	$ 102

Investments (Net Investment I_3

Investments (Net Investment Income - Narrative) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Equity Method Investments
Net Investment Income [Line Items]
Gross Investment Income, Operating	$ 266	$ 180	$ 596	$ 482

Investments (Net Investment Gai

Investments (Net Investment Gains Losses - Narrative) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Investments, Debt and Equity Securities [Abstract]
Gains (losses) from foreign currency transactions	$ (30)	$ (100)	$ 9	$ (82)

Derivatives (Primary Risks) (De

Derivatives (Primary Risks) (Details) - USD ($) $ in Millions	Sep. 30, 2019	Dec. 31, 2018
Derivatives, Fair Value [Line Items]
Derivative, Notional Amount	$ 322,137	$ 307,459
Estimated Fair Value Assets	12,945	8,969
Estimated Fair Value Liabilities	3,680	3,930
Derivatives Designated as Hedging Instruments:
Derivatives, Fair Value [Line Items]
Derivative, Notional Amount	56,617	54,384
Estimated Fair Value Assets	5,868	4,225
Estimated Fair Value Liabilities	1,792	2,297
Derivatives Designated as Hedging Instruments: | Fair Value Hedges [Member]
Derivatives, Fair Value [Line Items]
Derivative, Notional Amount	5,856	5,819
Estimated Fair Value Assets	2,932	2,279
Estimated Fair Value Liabilities	19	20
Derivatives Designated as Hedging Instruments: | Fair Value Hedges [Member] | Interest rate swaps
Derivatives, Fair Value [Line Items]
Derivative, Notional Amount	2,305	2,446
Estimated Fair Value Assets	2,847	2,197
Estimated Fair Value Liabilities	3	2
Derivatives Designated as Hedging Instruments: | Fair Value Hedges [Member] | Foreign currency swaps
Derivatives, Fair Value [Line Items]
Derivative, Notional Amount	1,155	1,233
Estimated Fair Value Assets	72	54
Estimated Fair Value Liabilities	0	0
Derivatives Designated as Hedging Instruments: | Fair Value Hedges [Member] | Foreign currency forwards
Derivatives, Fair Value [Line Items]
Derivative, Notional Amount	2,396	2,140
Estimated Fair Value Assets	13	28
Estimated Fair Value Liabilities	16	18
Derivatives Designated as Hedging Instruments: | Cash Flow Hedges [Member]
Derivatives, Fair Value [Line Items]
Derivative, Notional Amount	46,375	42,468
Estimated Fair Value Assets	2,891	1,939
Estimated Fair Value Liabilities	1,682	2,048
Derivatives Designated as Hedging Instruments: | Cash Flow Hedges [Member] | Interest rate swaps
Derivatives, Fair Value [Line Items]
Derivative, Notional Amount	3,724	3,515
Estimated Fair Value Assets	200	143
Estimated Fair Value Liabilities	0	1
Derivatives Designated as Hedging Instruments: | Cash Flow Hedges [Member] | Interest rate forwards
Derivatives, Fair Value [Line Items]
Derivative, Notional Amount	6,983	3,022
Estimated Fair Value Assets	242	0
Estimated Fair Value Liabilities	16	216
Derivatives Designated as Hedging Instruments: | Cash Flow Hedges [Member] | Foreign currency swaps
Derivatives, Fair Value [Line Items]
Derivative, Notional Amount	35,668	35,931
Estimated Fair Value Assets	2,449	1,796
Estimated Fair Value Liabilities	1,666	1,831
Derivatives Designated as Hedging Instruments: | Foreign Operations Hedges [Member]
Derivatives, Fair Value [Line Items]
Derivative, Notional Amount	4,386	6,097
Estimated Fair Value Assets	45	7
Estimated Fair Value Liabilities	91	229
Derivatives Designated as Hedging Instruments: | Foreign Operations Hedges [Member] | Foreign currency forwards
Derivatives, Fair Value [Line Items]
Derivative, Notional Amount	436	960
Estimated Fair Value Assets	18	4
Estimated Fair Value Liabilities	1	27
Derivatives Designated as Hedging Instruments: | Foreign Operations Hedges [Member] | Currency options
Derivatives, Fair Value [Line Items]
Derivative, Notional Amount	3,950	5,137
Estimated Fair Value Assets	27	3
Estimated Fair Value Liabilities	90	202
Derivatives Not Designated or Not Qualifying as Hedging Instruments:
Derivatives, Fair Value [Line Items]
Derivative, Notional Amount	265,520	253,075
Estimated Fair Value Assets	7,077	4,744
Estimated Fair Value Liabilities	1,888	1,633
Derivatives Not Designated or Not Qualifying as Hedging Instruments: | Interest rate swaps
Derivatives, Fair Value [Line Items]
Derivative, Notional Amount	56,457	54,891
Estimated Fair Value Assets	3,160	1,796
Estimated Fair Value Liabilities	194	175
Derivatives Not Designated or Not Qualifying as Hedging Instruments: | Interest rate forwards
Derivatives, Fair Value [Line Items]
Derivative, Notional Amount	235	234
Estimated Fair Value Assets	15	1
Estimated Fair Value Liabilities	0	15
Derivatives Not Designated or Not Qualifying as Hedging Instruments: | Interest rate floors
Derivatives, Fair Value [Line Items]
Derivative, Notional Amount	12,701	12,701
Estimated Fair Value Assets	212	102
Estimated Fair Value Liabilities	0	0
Derivatives Not Designated or Not Qualifying as Hedging Instruments: | Interest rate caps
Derivatives, Fair Value [Line Items]
Derivative, Notional Amount	55,638	54,575
Estimated Fair Value Assets	14	154
Estimated Fair Value Liabilities	6	1
Derivatives Not Designated or Not Qualifying as Hedging Instruments: | Interest rate futures
Derivatives, Fair Value [Line Items]
Derivative, Notional Amount	1,967	2,353
Estimated Fair Value Assets	4	1
Estimated Fair Value Liabilities	1	3
Derivatives Not Designated or Not Qualifying as Hedging Instruments: | Interest rate options
Derivatives, Fair Value [Line Items]
Derivative, Notional Amount	29,919	26,690
Estimated Fair Value Assets	1,542	416
Estimated Fair Value Liabilities	0	0
Derivatives Not Designated or Not Qualifying as Hedging Instruments: | Equity total return swaps
Derivatives, Fair Value [Line Items]
Derivative, Notional Amount	1,048	1,048
Estimated Fair Value Assets	48	33
Estimated Fair Value Liabilities	8	2
Derivatives Not Designated or Not Qualifying as Hedging Instruments: | Synthetic GICs
Derivatives, Fair Value [Line Items]
Derivative, Notional Amount	28,098	25,700
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]
Derivative, Notional Amount	13,235	11,388
Estimated Fair Value Assets	920	884
Estimated Fair Value Liabilities	498	458
Derivatives Not Designated or Not Qualifying as Hedging Instruments: | Foreign currency forwards
Derivatives, Fair Value [Line Items]
Derivative, Notional Amount	13,213	13,417
Estimated Fair Value Assets	111	198
Estimated Fair Value Liabilities	296	213
Derivatives Not Designated or Not Qualifying as Hedging Instruments: | Currency futures
Derivatives, Fair Value [Line Items]
Derivative, Notional Amount	891	847
Estimated Fair Value Assets	0	4
Estimated Fair Value Liabilities	3	0
Derivatives Not Designated or Not Qualifying as Hedging Instruments: | Currency options
Derivatives, Fair Value [Line Items]
Derivative, Notional Amount	1,861	2,040
Estimated Fair Value Assets	1	7
Estimated Fair Value Liabilities	0	0
Derivatives Not Designated or Not Qualifying as Hedging Instruments: | Credit default swaps — purchased
Derivatives, Fair Value [Line Items]
Derivative, Notional Amount	2,635	1,903
Estimated Fair Value Assets	9	25
Estimated Fair Value Liabilities	84	39
Derivatives Not Designated or Not Qualifying as Hedging Instruments: | Credit default swaps — written
Derivatives, Fair Value [Line Items]
Derivative, Notional Amount	11,583	11,391
Estimated Fair Value Assets	231	95
Estimated Fair Value Liabilities	2	13
Derivatives Not Designated or Not Qualifying as Hedging Instruments: | Equity futures
Derivatives, Fair Value [Line Items]
Derivative, Notional Amount	4,128	2,992
Estimated Fair Value Assets	7	13
Estimated Fair Value Liabilities	16	77
Derivatives Not Designated or Not Qualifying as Hedging Instruments: | Equity index options
Derivatives, Fair Value [Line Items]
Derivative, Notional Amount	28,783	27,707
Estimated Fair Value Assets	759	884
Estimated Fair Value Liabilities	684	550
Derivatives Not Designated or Not Qualifying as Hedging Instruments: | Equity variance swaps
Derivatives, Fair Value [Line Items]
Derivative, Notional Amount	2,292	2,269
Estimated Fair Value Assets	41	40
Estimated Fair Value Liabilities	94	87
Derivatives Not Designated or Not Qualifying as Hedging Instruments: | Equity total return swaps
Derivatives, Fair Value [Line Items]
Derivative, Notional Amount	836	929
Estimated Fair Value Assets	3	91
Estimated Fair Value Liabilities	$ 2	$ 0

Derivatives (Effects on the Con

Derivatives (Effects on the Consolidated Statement of Operations and Comprehensive Income (Loss)) (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, Gain (Loss) on Derivative, Net	$ 1,254,000,000	$ (378,000,000)	$ 2,093,000,000	$ (88,000,000)
Net Investment Income	4,623,000,000	4,486,000,000	14,224,000,000	12,704,000,000
Gain (Loss) on Investments	161,000,000	117,000,000	237,000,000	(443,000,000)
Policyholder Benefits and Claims Incurred, Net	10,648,000,000	10,080,000,000	29,713,000,000	33,664,000,000
Policyholder Account Balance, Interest Expense	1,500,000,000	1,334,000,000	4,976,000,000	3,527,000,000
Operating Expenses	3,443,000,000	3,469,000,000	10,058,000,000	10,319,000,000
Nonperformance Risk [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Embedded Derivative, Gain (Loss) on Embedded Derivative, Net	29,000,000	(20,000,000)	(46,000,000)	(25,000,000)
Fair Value Hedging [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, Gain (Loss) on Derivative, Net	0	(14,000,000)	0	(27,000,000)
Net Investment Income	6,000,000	0	5,000,000	0
Gain (Loss) on Investments	(17,000,000)	0	(52,000,000)	0
Policyholder Benefits and Claims Incurred, Net	(14,000,000)	0	(16,000,000)	0
Policyholder Account Balance, Interest Expense	1,000,000	0	1,000,000	0
Operating Expenses	0	0	0	0
Cash Flow Hedging [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, Gain (Loss) on Derivative, Net	0	3,000,000	0	27,000,000
Net Investment Income	5,000,000	4,000,000	13,000,000	13,000,000
Gain (Loss) on Investments	(7,000,000)	0	(26,000,000)	0
Policyholder Account Balance, Interest Expense	0	0	0	0
Operating Expenses	1,000,000	0	3,000,000	2,000,000
Other Comprehensive Income (Loss), before Tax	995,000,000	(291,000,000)	1,548,000,000	(197,000,000)
Net Investment Hedging [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Other Comprehensive Income (Loss), before Tax	26,000,000	4,000,000	(24,000,000)	(72,000,000)
Foreign Exchange Forward [Member] | Net Investment Hedging [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Other Comprehensive Income (Loss), before Tax				(72,000,000)
Designated as Hedging Instrument [Member] | Net Investment Hedging [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Other Comprehensive Income (Loss), before Tax	25,000,000	4,000,000	(18,000,000)
Interest Rate Contract | Cash Flow Hedging [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, Gain (Loss) on Derivative, Net	0	(2,000,000)	0	18,000,000
Net Investment Income	5,000,000	5,000,000	16,000,000	15,000,000
Gain (Loss) on Investments	1,000,000	0	(1,000,000)	0
Policyholder Benefits and Claims Incurred, Net	0	0	0	0
Policyholder Account Balance, Interest Expense	0	0	0	0
Operating Expenses	1,000,000	0	2,000,000	1,000,000
Other Comprehensive Income (Loss), before Tax	(7,000,000)	(3,000,000)	(17,000,000)	(34,000,000)
Credit forwards [Member] | Cash Flow Hedging [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, Gain (Loss) on Derivative, Net	0	0	0	0
Net Investment Income	0	0	0	0
Gain (Loss) on Investments	0	0	0	0
Policyholder Benefits and Claims Incurred, Net	0	0	0	0
Policyholder Account Balance, Interest Expense	0	0	0	0
Operating Expenses	0	0	0	0
Other Comprehensive Income (Loss), before Tax	0	0	0	0
Currency Swap [Member] | Cash Flow Hedging [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, Gain (Loss) on Derivative, Net	0	(6,000,000)	0	(342,000,000)
Net Investment Income	0	(1,000,000)	(3,000,000)	(2,000,000)
Gain (Loss) on Investments	(344,000,000)	0	(236,000,000)	0
Policyholder Benefits and Claims Incurred, Net	0	0	0	0
Policyholder Account Balance, Interest Expense	0	0	0	0
Operating Expenses	0	0	1,000,000	1,000,000
Other Comprehensive Income (Loss), before Tax	344,000,000	7,000,000	238,000,000	343,000,000
Derivative [Member] | Fair Value Hedging [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, Gain (Loss) on Derivative, Net	0	(7,000,000)	0	(27,000,000)
Net Investment Income	0	0	0	0
Gain (Loss) on Investments	(16,000,000)	0	(54,000,000)	0
Policyholder Benefits and Claims Incurred, Net	0	0	0	0
Policyholder Account Balance, Interest Expense	0	0	0	0
Operating Expenses	0	0	0	0
Derivative [Member] | Interest rate swaps | Fair Value Hedging [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, Gain (Loss) on Derivative, Net	0	(107,000,000)	0	(385,000,000)
Net Investment Income	(1,000,000)	0	(5,000,000)	0
Gain (Loss) on Investments	0	0	0	0
Policyholder Benefits and Claims Incurred, Net	223,000,000	0	555,000,000	0
Policyholder Account Balance, Interest Expense	1,000,000	0	1,000,000	0
Operating Expenses	0	0	0	0
Derivative [Member] | Currency Swap [Member] | Fair Value Hedging [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, Gain (Loss) on Derivative, Net	0	(56,000,000)	0	57,000,000
Net Investment Income	37,000,000	0	17,000,000	0
Gain (Loss) on Investments	(6,000,000)	0	39,000,000	0
Policyholder Benefits and Claims Incurred, Net	0	0	0	0
Policyholder Account Balance, Interest Expense	0	0	0	0
Operating Expenses	0	0	0	0
Debt Securities | Interest rate swaps | Fair Value Hedging [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, Gain (Loss) on Derivative, Net	0	108,000,000	0	388,000,000
Net Investment Income	0	0	5,000,000	0
Gain (Loss) on Investments	0	0	0	0
Policyholder Benefits and Claims Incurred, Net	(237,000,000)	0	(571,000,000)	0
Policyholder Account Balance, Interest Expense	0	0	0	0
Operating Expenses	0	0	0	0
Debt Securities | Currency Swap [Member] | Fair Value Hedging [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, Gain (Loss) on Derivative, Net	0	48,000,000	0	(60,000,000)
Net Investment Income	(30,000,000)	0	(12,000,000)	0
Gain (Loss) on Investments	5,000,000	0	(37,000,000)	0
Policyholder Benefits and Claims Incurred, Net	0	0	0	0
Policyholder Account Balance, Interest Expense	0	0	0	0
Operating Expenses	0	0	0	0
Foreign Currency Gain (Loss) [Member] | Cash Flow Hedging [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, Gain (Loss) on Derivative, Net	0	11,000,000	0	351,000,000
Net Investment Income	0	0	0	0
Gain (Loss) on Investments	336,000,000	0	211,000,000	0
Policyholder Benefits and Claims Incurred, Net	0	0	0	0
Policyholder Account Balance, Interest Expense	0	0	0	0
Operating Expenses	0	0	0	0
Other Comprehensive Income (Loss), before Tax	0	0	0	0
Non-derivative [Domain] [Member] | Net Investment Hedging [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Other Comprehensive Income (Loss), before Tax	1,000,000	0	(6,000,000)	0
Accumulated Other Comprehensive Income (Loss) | Credit forwards [Member] | Cash Flow Hedging [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Other Comprehensive Income (Loss), before Tax	0	0	0	0
Accumulated Other Comprehensive Income (Loss) | Currency Swap [Member] | Cash Flow Hedging [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Other Comprehensive Income (Loss), before Tax	132,000,000	(118,000,000)	191,000,000	5,000,000
Accumulated Other Comprehensive Income (Loss) | Interest rate swaps | Cash Flow Hedging [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Other Comprehensive Income (Loss), before Tax	526,000,000	(177,000,000)	1,136,000,000	(511,000,000)
Not Designated as Hedging Instrument [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, Gain (Loss) on Derivative, Net	1,341,000,000	(675,000,000)	1,889,000,000	(850,000,000)
Net Investment Income	(2,000,000)	0	(4,000,000)	5,000,000
Gain (Loss) on Investments	0	0	0	0
Policyholder Benefits and Claims Incurred, Net	36,000,000	(41,000,000)	(60,000,000)	(77,000,000)
Policyholder Account Balance, Interest Expense	0	0	0	0
Operating Expenses	0	0	0	0
Foreign Exchange [Member] | Not Designated as Hedging Instrument [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, Gain (Loss) on Derivative, Net	110,000,000	(115,000,000)	104,000,000	271,000,000
Net Investment Income	0	0	0	0
Gain (Loss) on Investments	0	0	0	0
Policyholder Benefits and Claims Incurred, Net	(3,000,000)	(1,000,000)	(4,000,000)	(4,000,000)
Policyholder Account Balance, Interest Expense	0	0	0	0
Operating Expenses	0	0	0	0
Credit derivatives — purchased | Not Designated as Hedging Instrument [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, Gain (Loss) on Derivative, Net	(5,000,000)	(9,000,000)	(25,000,000)	2,000,000
Net Investment Income	0	0	0	0
Gain (Loss) on Investments	0	0	0	0
Policyholder Benefits and Claims Incurred, Net	0	0	0	0
Policyholder Account Balance, Interest Expense	0	0	0	0
Operating Expenses	0	0	0	0
Credit derivatives — written | Not Designated as Hedging Instrument [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, Gain (Loss) on Derivative, Net	(4,000,000)	70,000,000	182,000,000	(9,000,000)
Net Investment Income	0	0	0	0
Gain (Loss) on Investments	0	0	0	0
Policyholder Benefits and Claims Incurred, Net	0	0	0	0
Policyholder Account Balance, Interest Expense	0	0	0	0
Operating Expenses	0	0	0	0
Equity Market Risk [Member] | Not Designated as Hedging Instrument [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, Gain (Loss) on Derivative, Net	(51,000,000)	(254,000,000)	(900,000,000)	(330,000,000)
Net Investment Income	0	0	0	1,000,000
Gain (Loss) on Investments	0	0	0	0
Policyholder Benefits and Claims Incurred, Net	(7,000,000)	(31,000,000)	(133,000,000)	(52,000,000)
Policyholder Account Balance, Interest Expense	0	0	0	0
Operating Expenses	0	0	0	0
Foreign Currency Gain (Loss) [Member] | Not Designated as Hedging Instrument [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, Gain (Loss) on Derivative, Net	(7,000,000)	(3,000,000)	(36,000,000)	(110,000,000)
Net Investment Income	0	0	0	0
Gain (Loss) on Investments	0	0	0	0
Policyholder Benefits and Claims Incurred, Net	0	0	0	0
Policyholder Account Balance, Interest Expense	0	0	0	0
Operating Expenses	0	0	0	0
Interest Rate Risk [Member] | Not Designated as Hedging Instrument [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, Gain (Loss) on Derivative, Net	1,298,000,000	(364,000,000)	2,564,000,000	(674,000,000)
Net Investment Income	(2,000,000)	0	(4,000,000)	4,000,000
Gain (Loss) on Investments	0	0	0	0
Policyholder Benefits and Claims Incurred, Net	46,000,000	(9,000,000)	77,000,000	(21,000,000)
Policyholder Account Balance, Interest Expense	0	0	0	0
Operating Expenses	0	0	0	0
Net Derivative Gain (Loss) [Member] | Not Designated as Hedging Instrument [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, Gain (Loss) on Derivative, Net	131,000,000	141,000,000	375,000,000	407,000,000
Net Investment Income	66,000,000	85,000,000	182,000,000	259,000,000
Gain (Loss) on Investments	0	0	0	0
Policyholder Benefits and Claims Incurred, Net	35,000,000	3,000,000	100,000,000	8,000,000
Policyholder Account Balance, Interest Expense	(42,000,000)	(28,000,000)	(110,000,000)	(79,000,000)
Operating Expenses	0	(2,000,000)	0	(8,000,000)
Other Comprehensive Income (Loss), before Tax	0	0	0	0
Embedded Derivative Financial Instruments [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, Gain (Loss) on Derivative, Net	(218,000,000)	167,000,000	(171,000,000)	355,000,000
Policyholder Benefits and Claims Incurred, Net	0	0	0	0
Effects of Derivatives on Consolidated Statements of Operations and Comprehensive Income (Loss) [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Net Investment Income	75,000,000	89,000,000	196,000,000	277,000,000
Gain (Loss) on Investments	(24,000,000)	0	(78,000,000)	0
Policyholder Benefits and Claims Incurred, Net	57,000,000	(38,000,000)	24,000,000	(69,000,000)
Policyholder Account Balance, Interest Expense	(41,000,000)	(28,000,000)	(109,000,000)	(79,000,000)
Operating Expenses	1,000,000	(2,000,000)	3,000,000	(6,000,000)
Other Comprehensive Income (Loss), before Tax	$ 1,021,000,000	$ (287,000,000)	$ 1,524,000,000	$ (269,000,000)

Derivatives (Fair Value Hedges)

Derivatives (Fair Value Hedges) (Details) - Designated as Hedging Instrument [Member] $ in Millions	Sep. 30, 2019USD ($)
Fixed maturity securities AFS
Derivative Instruments, Gain (Loss) [Line Items]
Hedged Asset, Discontinued Fair Value Hedge, Cumulative Increase (Decrease)	$ (1)
Debt Instruments, Carrying Amount	2,685
Hedged Asset, Fair Value Hedge, Cumulative Increase (Decrease)	(1)
Mortgages [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Debt Instruments, Carrying Amount	916
Hedged Asset, Fair Value Hedge, Cumulative Increase (Decrease)	15
Future policy benefits [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Debt Instruments, Carrying Amount	(4,623)
Hedged Asset, Fair Value Hedge, Cumulative Increase (Decrease)	$ (1,110)

Derivatives (Cash Flow Hedges)

Derivatives (Cash Flow Hedges) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) on Discontinuation of Cash Flow Hedge Due to Forecasted Transaction Probable of Not Occurring, Net	$ (1)	$ 1	$ 57	$ 6
Maximum Length of Time Hedged in Cash Flow Hedge			9 years		4 years
Accumulated Other Comprehensive Income Loss	$ 3,700		$ 3,700		$ 2,100
Derivatives in cash flow hedging relationships
Deferred net gains (losses) expected to be reclassified to earnings			$ 125

Derivatives (Hedges of Net Inve

Derivatives (Hedges of Net Investments in Foreign Operations) (Details) - USD ($) $ in Millions	Sep. 30, 2019	Dec. 31, 2018
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Debt Designated as Non-derivative Hedging Instrument	$ 389	$ 0
Derivatives used in Net Investment Hedge, Net of Tax	$ 160	$ 184

Derivatives (Credit Derivatives

Derivatives (Credit Derivatives) (Details) - USD ($) $ in Millions	9 Months Ended	12 Months Ended
	Sep. 30, 2019	Dec. 31, 2018
Credit Derivatives [Line Items]
Estimated Fair Value of Credit Default Swaps	$ 229	$ 82
Maximum Amount of Future Payments under Credit Default Swaps	$ 11,583	$ 11,391
Weighted Average Years to Maturity	4 years 6 months	4 years 3 months 18 days
Aaa/Aa/A
Credit Derivatives [Line Items]
Estimated Fair Value of Credit Default Swaps	$ 39	$ 32
Maximum Amount of Future Payments under Credit Default Swaps	$ 2,514	$ 2,508
Weighted Average Years to Maturity	2 years 3 months 18 days	2 years 4 months 24 days
Aaa/Aa/A | Single name credit default swaps (3)
Credit Derivatives [Line Items]
Estimated Fair Value of Credit Default Swaps	$ 4	$ 4
Maximum Amount of Future Payments under Credit Default Swaps	$ 315	$ 354
Weighted Average Years to Maturity	1 year 7 months 6 days	1 year 8 months 12 days
Aaa/Aa/A | Credit default swaps referencing indices
Credit Derivatives [Line Items]
Estimated Fair Value of Credit Default Swaps	$ 35	$ 28
Maximum Amount of Future Payments under Credit Default Swaps	$ 2,199	$ 2,154
Weighted Average Years to Maturity	2 years 4 months 24 days	2 years 6 months
Baa [Member]
Credit Derivatives [Line Items]
Estimated Fair Value of Credit Default Swaps	$ 170	$ 43
Maximum Amount of Future Payments under Credit Default Swaps	$ 8,770	$ 8,538
Weighted Average Years to Maturity	5 years 2 months 12 days	4 years 9 months 18 days
Baa [Member] | Single name credit default swaps (3)
Credit Derivatives [Line Items]
Estimated Fair Value of Credit Default Swaps	$ 3	$ 3
Maximum Amount of Future Payments under Credit Default Swaps	$ 266	$ 482
Weighted Average Years to Maturity	1 year 8 months 12 days	1 year 6 months
Baa [Member] | Credit default swaps referencing indices
Credit Derivatives [Line Items]
Estimated Fair Value of Credit Default Swaps	$ 167	$ 40
Maximum Amount of Future Payments under Credit Default Swaps	$ 8,504	$ 8,056
Weighted Average Years to Maturity	5 years 3 months 18 days	5 years
Ba
Credit Derivatives [Line Items]
Estimated Fair Value of Credit Default Swaps	$ 0	$ 0
Maximum Amount of Future Payments under Credit Default Swaps	$ 0	$ 15
Weighted Average Years to Maturity	0 years	2 years
Ba | Single name credit default swaps (3)
Credit Derivatives [Line Items]
Estimated Fair Value of Credit Default Swaps	$ 0	$ 0
Maximum Amount of Future Payments under Credit Default Swaps	$ 0	$ 15
Weighted Average Years to Maturity	0 years	2 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	$ 20	$ 7
Maximum Amount of Future Payments under Credit Default Swaps	$ 299	$ 330
Weighted Average Years to Maturity	4 years 7 months 6 days	5 years
B | Single name credit default swaps (3)
Credit Derivatives [Line Items]
Estimated Fair Value of Credit Default Swaps	$ 0	$ 0
Maximum Amount of Future Payments under Credit Default Swaps	$ 10	$ 0
Weighted Average Years to Maturity	8 months 12 days	0 years
B | Credit default swaps referencing indices
Credit Derivatives [Line Items]
Estimated Fair Value of Credit Default Swaps	$ 20	$ 7
Maximum Amount of Future Payments under Credit Default Swaps	$ 289	$ 330
Weighted Average Years to Maturity	4 years 8 months 12 days	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	Sep. 30, 2019	Dec. 31, 2018
Offsetting Assets [Line Items]
Estimated fair value of derivative assets presented in the consolidated balance sheets	$ 13,057	$ 9,068
Estimated fair value of derivative liabilities presented in the consolidated balance sheets	3,680	3,871
Net amount of derivative assets after application of master netting agreements and cash collateral	361	352
Net amount of derivative liabilities after application of master netting agreements and cash collateral	82	69
Over the Counter [Member]
Offsetting Assets [Line Items]
Gross estimated fair value of derivative assets	12,419	8,805
Gross estimated fair value of derivative liabilities	3,615	3,758
Gross estimated fair value of derivative assets	(2,787)	(2,570)
Gross estimated fair value of derivative liabilities	(2,787)	(2,570)
Cash collateral on derivative assets	(6,091)	(4,709)
Cash collateral on derivative liabilities	0	0
Securities collateral on derivative assets	(3,215)	(1,266)
Securities collateral on derivative liabilities	(757)	(1,134)
Cleared [Member]
Offsetting Assets [Line Items]
Gross estimated fair value of derivative assets	627	245
Gross estimated fair value of derivative liabilities	45	33
Gross estimated fair value of derivative assets	(15)	(25)
Gross estimated fair value of derivative liabilities	(15)	(25)
Cash collateral on derivative assets	(587)	(145)
Cash collateral on derivative liabilities	(11)	0
Securities collateral on derivative assets	0	0
Securities collateral on derivative liabilities	(8)	(8)
Exchange-traded
Offsetting Assets [Line Items]
Gross estimated fair value of derivative assets	11	18
Gross estimated fair value of derivative liabilities	20	80
Gross estimated fair value of derivative assets	(1)	(1)
Gross estimated fair value of derivative liabilities	(1)	(1)
Cash collateral on derivative assets	0	0
Cash collateral on derivative liabilities	(5)	(57)
Securities collateral on derivative assets	0	0
Securities collateral on derivative liabilities	$ (14)	$ (7)

Derivatives (Credit Risk on Fre

Derivatives (Credit Risk on Freestanding Derivatives) (Details) - USD ($) $ in Millions	Sep. 30, 2019	Dec. 31, 2018
Credit Derivatives [Line Items]
Estimated Fair Value of Derivatives in a Net Liability Position (1)	$ 828	$ 1,188
Fixed maturity securities AFS
Credit Derivatives [Line Items]
Estimated Fair Value of Collateral Provided:	846	1,227
Cash
Credit Derivatives [Line Items]
Estimated Fair Value of Collateral Provided:	0	6
Derivatives Subject to Credit- Contingent Provisions
Credit Derivatives [Line Items]
Estimated Fair Value of Derivatives in a Net Liability Position (1)	783	1,148
Derivatives Subject to Credit- Contingent Provisions | Fixed maturity securities AFS
Credit Derivatives [Line Items]
Estimated Fair Value of Collateral Provided:	846	1,218
Derivatives Subject to Credit- Contingent Provisions | Cash
Credit Derivatives [Line Items]
Estimated Fair Value of Collateral Provided:	0	6
Derivatives Not Subject to Credit- Contingent Provisions
Credit Derivatives [Line Items]
Estimated Fair Value of Derivatives in a Net Liability Position (1)	45	40
Derivatives Not Subject to Credit- Contingent Provisions | Fixed maturity securities AFS
Credit Derivatives [Line Items]
Estimated Fair Value of Collateral Provided:	0	9
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	Sep. 30, 2019	Dec. 31, 2018
Derivatives, Fair Value [Line Items]
Embedded derivatives within liability host contracts	$ 1,188	$ 810
Ceded guaranteed minimum benefits | Premiums, reinsurance and other receivables
Derivatives, Fair Value [Line Items]
Embedded derivatives within asset host contracts	64	71
Direct guaranteed minimum benefits | Policyholder account balances
Derivatives, Fair Value [Line Items]
Embedded derivatives within liability host contracts	620	298
Assumed guaranteed minimum benefits | Policyholder account balances
Derivatives, Fair Value [Line Items]
Embedded derivatives within liability host contracts	415	495
Funds withheld on ceded reinsurance | Other liabilities
Derivatives, Fair Value [Line Items]
Embedded derivatives within liability host contracts	36	(41)
Fixed annuities with equity indexed returns [Member] | Policyholder account balances
Derivatives, Fair Value [Line Items]
Embedded derivatives within liability host contracts	109	58
Fixed annuities with equity indexed returns | Policyholder account balances
Derivatives, Fair Value [Line Items]
Embedded derivatives within liability host contracts	$ 8	$ 0

Derivatives (Narrative) (Detail

Derivatives (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Derivatives, Fair Value [Line Items]
Maximum Amount of Future Payments under Credit Default Swaps	$ 11,583		$ 11,583		$ 11,391
Estimated Fair Value of Credit Default Swaps	229		229		82
Estimated Fair Value Assets	12,945		12,945		8,969
Estimated Fair Value Liabilities	3,680		3,680		3,930
Excess securities collateral received on derivatives	204		204		$ 135
Collateral Amount Not Provided Due to Downgrade Threshold	15		15
Derivative Instrument Detail [Abstract]
Net amounts reclassified into net derivatives gains (losses) on discontinued cash flow hedges	(1)	$ 1	$ 57	$ 6
Hedging exposure to variability in future cash flows for specific length of time			9 years		4 years
Accumulated Other Comprehensive Income Loss	3,700		$ 3,700		$ 2,100
Cumulative foreign currency translation gain (loss) recorded in accumulated other comprehensive income (loss) for net investment in foreign operations hedges	160		160		184
Excess securities collateral provided on derivatives	310		310		226
Securities collateral received which the company is permitted to sell or repledge, amount that has been sold or repledged	0		0
Nonperformance Risk [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Net derivatives gains (losses)	29	$ (20)	(46)	$ (25)
Over the Counter [Member]
Derivatives, Fair Value [Line Items]
Excess securities collateral received on derivatives	(81)		(81)		(70)
Excess securities collateral provided on derivatives	(118)		(118)		(212)
Cash collateral on derivative assets	(6,091)		(6,091)		(4,709)
Exchange-traded
Derivatives, Fair Value [Line Items]
Excess securities collateral received on derivatives	(1,000)		(1,000)		(601)
Excess securities collateral provided on derivatives	(138)		(138)		(90)
Cash collateral on derivative assets	0		0		0
Accrued Liabilities [Member]
Derivatives, Fair Value [Line Items]
Estimated Fair Value Assets	112		112		99
Estimated Fair Value Liabilities	$ 0		$ 0		$ (59)

Fair Value (Recurring Fair Valu

Fair Value (Recurring Fair Value Measurements) (Details) - USD ($) $ in Millions	Sep. 30, 2019	Dec. 31, 2018
Assets [Abstract]
Debt Securities, Available-for-sale	$ 326,049	$ 298,265
Equity securities	1,341	1,440
Debt Securities, Trading, and Equity Securities, FV-NI	12,671	12,616
Short-term investments	3,536	3,937
Residential mortgage loans - FVO	78,959	75,752
Derivative assets	12,945	8,969
Separate account assets	190,357	175,556
Liabilities [Abstract]
Derivative liabilities	3,680	3,930
Embedded derivatives within liability host contracts	1,188	810
Separate account liabilities	190,357	175,556
Residential mortgage loans - FVO
Assets [Abstract]
Residential mortgage loans - FVO	218	299
Recurring
Assets [Abstract]
Debt Securities, Available-for-sale	326,049	298,265
Equity securities	1,341	1,440
Debt Securities, Trading, and Equity Securities, FV-NI	12,671	12,616
Short-term investments	2,859	3,249
Other investments	547	237
Derivative assets	12,945	8,969
Embedded derivatives within asset host contracts	64	71
Separate account assets	190,357	175,556
Total assets (6)	547,051	500,702
Liabilities [Abstract]
Derivative liabilities	3,680	3,930
Embedded derivatives within liability host contracts	1,188	810
Total liabilities	4,908	4,768
Recurring | Interest rate contracts
Assets [Abstract]
Derivative assets	8,284	4,843
Liabilities [Abstract]
Derivative liabilities	228	415
Recurring | Foreign currency exchange rate contracts
Assets [Abstract]
Derivative assets	3,611	2,978
Liabilities [Abstract]
Derivative liabilities	2,570	2,749
Recurring | Credit contracts
Assets [Abstract]
Derivative assets	240	120
Liabilities [Abstract]
Derivative liabilities	86	52
Recurring | Equity market contracts
Assets [Abstract]
Derivative assets	810	1,028
Liabilities [Abstract]
Derivative liabilities	796	714
Recurring | Derivative Liabilities Within Separate Accounts
Liabilities [Abstract]
Separate account liabilities	40	28
Recurring | Residential mortgage loans - FVO
Assets [Abstract]
Residential mortgage loans - FVO	218	299
Recurring | U.S. corporate
Assets [Abstract]
Debt Securities, Available-for-sale	87,114	78,948
Recurring | Foreign government
Assets [Abstract]
Debt Securities, Available-for-sale	67,547	62,288
Recurring | Foreign corporate
Assets [Abstract]
Debt Securities, Available-for-sale	63,100	56,703
Recurring | U.S. government and agency
Assets [Abstract]
Debt Securities, Available-for-sale	40,802	39,322
Recurring | RMBS
Assets [Abstract]
Debt Securities, Available-for-sale	29,591	27,961
Recurring | ABS
Assets [Abstract]
Debt Securities, Available-for-sale	14,345	12,472
Recurring | Municipals
Assets [Abstract]
Debt Securities, Available-for-sale	12,942	11,533
Recurring | CMBS
Assets [Abstract]
Debt Securities, Available-for-sale	10,608	9,038
Recurring | Level 1
Assets [Abstract]
Debt Securities, Available-for-sale	20,153	19,656
Equity securities	795	916
Debt Securities, Trading, and Equity Securities, FV-NI	10,270	10,216
Short-term investments	929	1,470
Other investments	73	80
Derivative assets	11	18
Embedded derivatives within asset host contracts	0	0
Separate account assets	88,435	79,726
Total assets (6)	120,666	112,082
Liabilities [Abstract]
Derivative liabilities	20	80
Embedded derivatives within liability host contracts	0	0
Total liabilities	21	81
Recurring | Level 1 | Interest rate contracts
Assets [Abstract]
Derivative assets	4	1
Liabilities [Abstract]
Derivative liabilities	1	3
Recurring | Level 1 | Foreign currency exchange rate contracts
Assets [Abstract]
Derivative assets	0	4
Liabilities [Abstract]
Derivative liabilities	3	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	7	13
Liabilities [Abstract]
Derivative liabilities	16	77
Recurring | Level 1 | Derivative Liabilities Within Separate Accounts
Liabilities [Abstract]
Separate account liabilities	1	1
Recurring | Level 1 | Residential mortgage loans - FVO
Assets [Abstract]
Residential mortgage loans - FVO	0	0
Recurring | Level 1 | U.S. corporate
Assets [Abstract]
Debt Securities, Available-for-sale	0	0
Recurring | Level 1 | Foreign government
Assets [Abstract]
Debt Securities, Available-for-sale	0	0
Recurring | Level 1 | Foreign corporate
Assets [Abstract]
Debt Securities, Available-for-sale	0	0
Recurring | Level 1 | U.S. government and agency
Assets [Abstract]
Debt Securities, Available-for-sale	20,145	19,656
Recurring | Level 1 | RMBS
Assets [Abstract]
Debt Securities, Available-for-sale	8	0
Recurring | Level 1 | ABS
Assets [Abstract]
Debt Securities, Available-for-sale	0	0
Recurring | Level 1 | Municipals
Assets [Abstract]
Debt Securities, Available-for-sale	0	0
Recurring | Level 1 | CMBS
Assets [Abstract]
Debt Securities, Available-for-sale	0	0
Recurring | Level 2
Assets [Abstract]
Debt Securities, Available-for-sale	288,510	263,738
Equity securities	109	105
Debt Securities, Trading, and Equity Securities, FV-NI	1,902	1,995
Short-term investments	1,556	1,746
Other investments	151	118
Derivative assets	12,493	8,778
Embedded derivatives within asset host contracts	0	0
Separate account assets	100,966	94,886
Total assets (6)	405,687	371,366
Liabilities [Abstract]
Derivative liabilities	3,460	3,452
Embedded derivatives within liability host contracts	0	0
Total liabilities	3,490	3,472
Recurring | Level 2 | Interest rate contracts
Assets [Abstract]
Derivative assets	7,989	4,809
Liabilities [Abstract]
Derivative liabilities	203	194
Recurring | Level 2 | Foreign currency exchange rate contracts
Assets [Abstract]
Derivative assets	3,542	2,922
Liabilities [Abstract]
Derivative liabilities	2,485	2,660
Recurring | Level 2 | Credit contracts
Assets [Abstract]
Derivative assets	208	91
Liabilities [Abstract]
Derivative liabilities	86	48
Recurring | Level 2 | Equity market contracts
Assets [Abstract]
Derivative assets	754	956
Liabilities [Abstract]
Derivative liabilities	686	550
Recurring | Level 2 | Derivative Liabilities Within Separate Accounts
Liabilities [Abstract]
Separate account liabilities	30	20
Recurring | Level 2 | Residential mortgage loans - FVO
Assets [Abstract]
Residential mortgage loans - FVO	0	0
Recurring | Level 2 | U.S. corporate
Assets [Abstract]
Debt Securities, Available-for-sale	81,740	74,874
Recurring | Level 2 | Foreign government
Assets [Abstract]
Debt Securities, Available-for-sale	67,410	62,150
Recurring | Level 2 | Foreign corporate
Assets [Abstract]
Debt Securities, Available-for-sale	55,580	50,310
Recurring | Level 2 | U.S. government and agency
Assets [Abstract]
Debt Securities, Available-for-sale	20,657	19,666
Recurring | Level 2 | RMBS
Assets [Abstract]
Debt Securities, Available-for-sale	26,406	24,734
Recurring | Level 2 | ABS
Assets [Abstract]
Debt Securities, Available-for-sale	13,521	11,775
Recurring | Level 2 | Municipals
Assets [Abstract]
Debt Securities, Available-for-sale	12,934	11,533
Recurring | Level 2 | CMBS
Assets [Abstract]
Debt Securities, Available-for-sale	10,262	8,696
Recurring | Level 3
Assets [Abstract]
Debt Securities, Available-for-sale	17,386	14,871
Equity securities	437	419
Debt Securities, Trading, and Equity Securities, FV-NI	499	405
Short-term investments	374	33
Other investments	323	39
Derivative assets	441	173
Embedded derivatives within asset host contracts	64	71
Separate account assets	956	944
Total assets (6)	20,698	17,254
Liabilities [Abstract]
Derivative liabilities	200	398
Embedded derivatives within liability host contracts	1,188	810
Total liabilities	1,397	1,215
Recurring | Level 3 | Interest rate contracts
Assets [Abstract]
Derivative assets	291	33
Liabilities [Abstract]
Derivative liabilities	24	218
Recurring | Level 3 | Foreign currency exchange rate contracts
Assets [Abstract]
Derivative assets	69	52
Liabilities [Abstract]
Derivative liabilities	82	89
Recurring | Level 3 | Credit contracts
Assets [Abstract]
Derivative assets	32	29
Liabilities [Abstract]
Derivative liabilities	0	4
Recurring | Level 3 | Equity market contracts
Assets [Abstract]
Derivative assets	49	59
Liabilities [Abstract]
Derivative liabilities	94	87
Recurring | Level 3 | Derivative Liabilities Within Separate Accounts
Liabilities [Abstract]
Separate account liabilities	9	7
Recurring | Level 3 | Residential mortgage loans - FVO
Assets [Abstract]
Residential mortgage loans - FVO	218	299
Recurring | Level 3 | U.S. corporate
Assets [Abstract]
Debt Securities, Available-for-sale	5,374	4,074
Recurring | Level 3 | Foreign government
Assets [Abstract]
Debt Securities, Available-for-sale	137	138
Recurring | Level 3 | Foreign corporate
Assets [Abstract]
Debt Securities, Available-for-sale	7,520	6,393
Recurring | Level 3 | U.S. government and agency
Assets [Abstract]
Debt Securities, Available-for-sale	0	0
Recurring | Level 3 | RMBS
Assets [Abstract]
Debt Securities, Available-for-sale	3,177	3,227
Recurring | Level 3 | ABS
Assets [Abstract]
Debt Securities, Available-for-sale	824	697
Recurring | Level 3 | Municipals
Assets [Abstract]
Debt Securities, Available-for-sale	8	0
Recurring | Level 3 | CMBS
Assets [Abstract]
Debt Securities, Available-for-sale	346	342
Partnership Interest [Member] | Recurring
Assets [Abstract]
Investments, Fair Value Disclosure	$ 103	$ 145

Fair Value (Quantitative Inform

Fair Value (Quantitative Information) (Details)	Sep. 30, 2019	Dec. 31, 2018
Minimum | Interest rate contracts | Measurement Input, Swap Yield
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative Asset (Liability) Net, Measurement Input	164	268
Minimum | Interest rate contracts | Measurement Input, Repurchase Rate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative Asset (Liability) Net, Measurement Input	(7)	(5)
Minimum | Foreign currency exchange rate contracts | Measurement Input, Swap Yield
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative Asset (Liability) Net, Measurement Input	(169)	(20)
Minimum | Credit contracts | Measurement Input, Credit Spread
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative Asset (Liability) Net, Measurement Input	96	97
Minimum | Equity market contracts | Measurement Input, Price Volatility
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative Asset (Liability) Net, Measurement Input	0.16	0.21
Minimum | Equity market contracts | Measurement Input, Correlation
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative Asset (Liability) Net, Measurement Input	0.10	0.10
Minimum | Embedded derivatives direct, assumed and ceded guaranteed minimum benefits | Measurement Input, Utilization Rate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Embedded Derivative Asset (Liability) Net, Measurement Input	0	0
Minimum | Embedded derivatives direct, assumed and ceded guaranteed minimum benefits | Measurement Input, Withdrawal Rate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Embedded Derivative Asset (Liability) Net, Measurement Input	0	0
Minimum | Embedded derivatives direct, assumed and ceded guaranteed minimum benefits | Measurement Input, Long-Term Equity Volatility
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Embedded Derivative Asset (Liability) Net, Measurement Input	0.0585	0.0716
Minimum | Embedded derivatives direct, assumed and ceded guaranteed minimum benefits | Measurement Input, Counterparty Credit Risk
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Embedded Derivative Asset (Liability) Net, Measurement Input	0.0004	0.0004
Minimum | Embedded derivatives direct, assumed and ceded guaranteed minimum benefits | Durations 1 - 10 | Measurement Input, Lapse Rate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Embedded Derivative Asset (Liability) Net, Measurement Input	0.0025	0.0025
Minimum | Embedded derivatives direct, assumed and ceded guaranteed minimum benefits | Durations 11 - 20 | Measurement Input, Lapse Rate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Embedded Derivative Asset (Liability) Net, Measurement Input	0.0050	0.02
Minimum | Embedded derivatives direct, assumed and ceded guaranteed minimum benefits | Durations 21 - 116 | Measurement Input, Lapse Rate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Embedded Derivative Asset (Liability) Net, Measurement Input	0.0050	0.0125
Minimum | Embedded derivatives direct, assumed and ceded guaranteed minimum benefits | Ages 0 - 40 | Measurement Input, Mortality Rate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Embedded Derivative Asset (Liability) Net, Measurement Input	0	0
Minimum | Embedded derivatives direct, assumed and ceded guaranteed minimum benefits | Ages 41 - 60 | Measurement Input, Mortality Rate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Embedded Derivative Asset (Liability) Net, Measurement Input	0.0003	0.0003
Minimum | Embedded derivatives direct, assumed and ceded guaranteed minimum benefits | Ages 61 - 115 | Measurement Input, Mortality Rate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Embedded Derivative Asset (Liability) Net, Measurement Input	0.0013	0.0012
Minimum | U.S. corporate and foreign corporate securities | Valuation Technique, Matrix Pricing | Measurement Input, Offered Price
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Debt Securities, Available-for-sale, Measurement Input	50	85
Minimum | U.S. corporate and foreign corporate securities | Valuation, Market Approach | Measurement Input, Quoted Price
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Debt Securities, Available-for-sale, Measurement Input	25	25
Minimum | U.S. corporate and foreign corporate securities | Valuation Technique, Consensus Pricing Model | Measurement Input, Offered Price
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Debt Securities, Available-for-sale, Measurement Input	95	100
Minimum | RMBS | Valuation, Market Approach | Measurement Input, Quoted Price
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Debt Securities, Available-for-sale, Measurement Input	0	0
Minimum | ABS | Valuation, Market Approach | Measurement Input, Quoted Price
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Debt Securities, Available-for-sale, Measurement Input	3	3
Minimum | ABS | Valuation Technique, Consensus Pricing Model | Measurement Input, Offered Price
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Debt Securities, Available-for-sale, Measurement Input	96	100
Maximum | Interest rate contracts | Measurement Input, Swap Yield
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative Asset (Liability) Net, Measurement Input	221	317
Maximum | Interest rate contracts | Measurement Input, Repurchase Rate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative Asset (Liability) Net, Measurement Input	5	6
Maximum | Foreign currency exchange rate contracts | Measurement Input, Swap Yield
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative Asset (Liability) Net, Measurement Input	328	328
Maximum | Credit contracts | Measurement Input, Credit Spread
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative Asset (Liability) Net, Measurement Input	100	103
Maximum | Equity market contracts | Measurement Input, Price Volatility
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative Asset (Liability) Net, Measurement Input	0.24	0.26
Maximum | Equity market contracts | Measurement Input, Correlation
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative Asset (Liability) Net, Measurement Input	0.30	0.30
Maximum | Embedded derivatives direct, assumed and ceded guaranteed minimum benefits | Measurement Input, Utilization Rate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Embedded Derivative Asset (Liability) Net, Measurement Input	0.22	0.25
Maximum | Embedded derivatives direct, assumed and ceded guaranteed minimum benefits | Measurement Input, Withdrawal Rate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Embedded Derivative Asset (Liability) Net, Measurement Input	0.20	0.20
Maximum | Embedded derivatives direct, assumed and ceded guaranteed minimum benefits | Measurement Input, Long-Term Equity Volatility
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Embedded Derivative Asset (Liability) Net, Measurement Input	0.30	0.30
Maximum | Embedded derivatives direct, assumed and ceded guaranteed minimum benefits | Measurement Input, Counterparty Credit Risk
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Embedded Derivative Asset (Liability) Net, Measurement Input	0.0152	0.0177
Maximum | Embedded derivatives direct, assumed and ceded guaranteed minimum benefits | Durations 1 - 10 | Measurement Input, Lapse Rate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Embedded Derivative Asset (Liability) Net, Measurement Input	1	1
Maximum | Embedded derivatives direct, assumed and ceded guaranteed minimum benefits | Durations 11 - 20 | Measurement Input, Lapse Rate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Embedded Derivative Asset (Liability) Net, Measurement Input	1	1
Maximum | Embedded derivatives direct, assumed and ceded guaranteed minimum benefits | Durations 21 - 116 | Measurement Input, Lapse Rate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Embedded Derivative Asset (Liability) Net, Measurement Input	1	1
Maximum | Embedded derivatives direct, assumed and ceded guaranteed minimum benefits | Ages 0 - 40 | Measurement Input, Mortality Rate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Embedded Derivative Asset (Liability) Net, Measurement Input	0.0018	0.0018
Maximum | Embedded derivatives direct, assumed and ceded guaranteed minimum benefits | Ages 41 - 60 | Measurement Input, Mortality Rate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Embedded Derivative Asset (Liability) Net, Measurement Input	0.0080	0.0080
Maximum | Embedded derivatives direct, assumed and ceded guaranteed minimum benefits | Ages 61 - 115 | Measurement Input, Mortality Rate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Embedded Derivative Asset (Liability) Net, Measurement Input	1	1
Maximum | U.S. corporate and foreign corporate securities | Valuation Technique, Matrix Pricing | Measurement Input, Offered Price
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Debt Securities, Available-for-sale, Measurement Input	147	134
Maximum | U.S. corporate and foreign corporate securities | Valuation, Market Approach | Measurement Input, Quoted Price
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Debt Securities, Available-for-sale, Measurement Input	451	638
Maximum | U.S. corporate and foreign corporate securities | Valuation Technique, Consensus Pricing Model | Measurement Input, Offered Price
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Debt Securities, Available-for-sale, Measurement Input	113	110
Maximum | RMBS | Valuation, Market Approach | Measurement Input, Quoted Price
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Debt Securities, Available-for-sale, Measurement Input	115	106
Maximum | ABS | Valuation, Market Approach | Measurement Input, Quoted Price
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Debt Securities, Available-for-sale, Measurement Input	124	116
Maximum | ABS | Valuation Technique, Consensus Pricing Model | Measurement Input, Offered Price
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Debt Securities, Available-for-sale, Measurement Input	105	103
Weighted Average | U.S. corporate and foreign corporate securities | Valuation Technique, Matrix Pricing | Measurement Input, Offered Price
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Debt Securities, Available-for-sale, Measurement Input	114	104
Weighted Average | U.S. corporate and foreign corporate securities | Valuation, Market Approach | Measurement Input, Quoted Price
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Debt Securities, Available-for-sale, Measurement Input	118	110
Weighted Average | U.S. corporate and foreign corporate securities | Valuation Technique, Consensus Pricing Model | Measurement Input, Offered Price
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Debt Securities, Available-for-sale, Measurement Input	103	102
Weighted Average | RMBS | Valuation, Market Approach | Measurement Input, Quoted Price
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Debt Securities, Available-for-sale, Measurement Input	96	94
Weighted Average | ABS | Valuation, Market Approach | Measurement Input, Quoted Price
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Debt Securities, Available-for-sale, Measurement Input	97	97
Weighted Average | ABS | Valuation Technique, Consensus Pricing Model | Measurement Input, Offered Price
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Debt Securities, Available-for-sale, Measurement Input	102	101

Fair Value (Unobservable Input

Fair Value (Unobservable Input Reconciliation) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Residential mortgage loans - FVO
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, beginning of period	$ 262	$ 405	$ 299	$ 520
Total realized/unrealized gains (losses) included in net income (loss)	2	4	8	7
Total realized/unrealized gains (losses) included in AOCI	0	0	0	0
Purchases	0	0	0	0
Sales	(39)	(70)	(64)	(151)
Issuances	0	0	0	0
Settlements	(7)	(16)	(25)	(53)
Transfers into Level 3	0	0	0	0
Transfers out of Level 3	0	0	0	0
Balance, end of period	218	323	218	323
Changes in unrealized gains (losses) included in net income (loss) for the instruments still held at end of period	(8)	(5)	(7)	(13)
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	(8)	(5)	(7)	(13)
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	(22)	(38)	27	(66)
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Balance, beginning of period	105	(267)	(225)	(132)
Total realized/unrealized gains (losses) included in net income (loss)	27	(70)	48	(151)
Total realized/unrealized gains (losses) included in AOCI	216	(107)	439	(228)
Purchases	0	0	4	4
Sales	0	0	0	0
Issuances	0	0	(1)	0
Settlements	(107)	37	(24)	100
Transfers into Level 3	0	0	0	0
Transfers out of Level 3	0	0	0	0
Balance, end of period	241	(407)	241	(407)
Changes in unrealized gains (losses) included in net income (loss) for the instruments still held at end of period	(22)	(38)	27	(66)
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	(219)	168	(173)	352
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Balance, beginning of period	(835)	(240)	(739)	(274)
Total realized/unrealized gains (losses) included in net income (loss)	(218)	167	(170)	355
Total realized/unrealized gains (losses) included in AOCI	1	9	(7)	6
Purchases	0	0	0	0
Sales	0	0	0	0
Issuances	0	0	0	0
Settlements	(72)	(75)	(208)	(226)
Transfers into Level 3	0	0	0	0
Transfers out of Level 3	0	0	0	0
Balance, end of period	(1,124)	(139)	(1,124)	(139)
Changes in unrealized gains (losses) included in net income (loss) for the instruments still held at end of period	(219)	168	(173)	352
Corporate fixed maturity securities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, beginning of period	11,607	10,621	10,467	11,219
Total realized/unrealized gains (losses) included in net income (loss)	(12)	2	(6)	13
Total realized/unrealized gains (losses) included in AOCI	111	(176)	717	(621)
Purchases	922	594	2,073	1,606
Sales	(260)	(497)	(618)	(1,366)
Issuances	0	0	0	0
Settlements	0	0	0	0
Transfers into Level 3	605	84	601	88
Transfers out of Level 3	(79)	(295)	(340)	(606)
Balance, end of period	12,894	10,333	12,894	10,333
Changes in unrealized gains (losses) included in net income (loss) for the instruments still held at end of period	(6)	2	(10)	3
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)	2	(10)	3
Foreign government
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, beginning of period	143	156	138	209
Total realized/unrealized gains (losses) included in net income (loss)	(1)	0	0	1
Total realized/unrealized gains (losses) included in AOCI	(5)	(4)	(6)	(16)
Purchases	0	4	4	5
Sales	(1)	(6)	(6)	(21)
Issuances	0	0	0	0
Settlements	0	0	0	0
Transfers into Level 3	2	5	12	0
Transfers out of Level 3	(1)	(15)	(5)	(38)
Balance, end of period	137	140	137	140
Changes in unrealized gains (losses) included in net income (loss) for the instruments still held at end of period	(1)	0	0	1
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	0	1
Structured Securities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, beginning of period	4,155	4,677	4,266	4,841
Total realized/unrealized gains (losses) included in net income (loss)	11	30	36	73
Total realized/unrealized gains (losses) included in AOCI	5	(15)	65	1
Purchases	525	746	948	919
Sales	(179)	(281)	(508)	(788)
Issuances	0	0	0	0
Settlements	0	0	0	0
Transfers into Level 3	0	36	2	50
Transfers out of Level 3	(170)	(977)	(462)	(880)
Balance, end of period	4,347	4,216	4,347	4,216
Changes in unrealized gains (losses) included in net income (loss) for the instruments still held at end of period	10	27	35	66
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	10	27	35	66
US States and Political Subdivisions Debt Securities [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, beginning of period	7	8	0	0
Total realized/unrealized gains (losses) included in net income (loss)	0	0	0	0
Total realized/unrealized gains (losses) included in AOCI	1	0	1	0
Purchases	0	0	7	0
Sales	0	0	0	0
Issuances	0	0	0	0
Settlements	0	0	0	0
Transfers into Level 3	0	0	0	0
Transfers out of Level 3	0	(8)	0	0
Balance, end of period	8	0	8	0
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	457	408	419	428
Total realized/unrealized gains (losses) included in net income (loss)	1	(1)	29	(11)
Total realized/unrealized gains (losses) included in AOCI	0	0	0	0
Purchases	1	6	49	11
Sales	(22)	(7)	(60)	(20)
Issuances	0	0	0	0
Settlements	0	0	0	0
Transfers into Level 3	0	45	0	45
Transfers out of Level 3	0	(8)	0	(10)
Balance, end of period	437	443	437	443
Changes in unrealized gains (losses) included in net income (loss) for the instruments still held at end of period	1	0	21	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	21	0
Unit-linked and FVO Securities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, beginning of period	494	269	405	362
Total realized/unrealized gains (losses) included in net income (loss)	(2)	(2)	21	(7)
Total realized/unrealized gains (losses) included in AOCI	0	0	0	0
Purchases	74	48	117	77
Sales	(65)	(32)	(41)	(162)
Issuances	0	0	0	0
Settlements	0	0	0	0
Transfers into Level 3	0	12	3	10
Transfers out of Level 3	(2)	(69)	(6)	(54)
Balance, end of period	499	226	499	226
Changes in unrealized gains (losses) included in net income (loss) for the instruments still held at end of period	(6)	(2)	17	(8)
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)	(2)	17	(8)
Short-term Investments
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, beginning of period	123	559	33	33
Total realized/unrealized gains (losses) included in net income (loss)	0	0	0	0
Total realized/unrealized gains (losses) included in AOCI	(1)	(3)	(2)	(7)
Purchases	255	102	372	659
Sales	(3)	(2)	(31)	(11)
Issuances	0	0	0	0
Settlements	0	0	0	0
Transfers into Level 3	0	0	2	0
Transfers out of Level 3	0	(2)	0	(20)
Balance, end of period	374	654	374	654
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
Other Investments
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, beginning of period	232	0	39	0
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	91	0	284	0
Sales	0	0	0	0
Issuances	0	0	0	0
Settlements	0	0	0	0
Transfers into Level 3	0	0	0	0
Transfers out of Level 3	0	0	0	0
Balance, end of period	323	0	323	0
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
Separate Accounts
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, beginning of period	925	1,138	937	959
Total realized/unrealized gains (losses) included in net income (loss)	5	2	10	2
Total realized/unrealized gains (losses) included in AOCI	0	0	0	0
Purchases	107	148	147	200
Sales	(88)	(215)	(146)	(162)
Issuances	0	0	2	(3)
Settlements	(2)	0	(3)	0
Transfers into Level 3	0	5	0	81
Transfers out of Level 3	0	(77)	0	(76)
Balance, end of period	947	1,001	947	1,001
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 Residential Mortgage Loans) (Details) - Residential mortgage loans - FVO - USD ($) $ in Millions	Sep. 30, 2019	Dec. 31, 2018
Fair Value, Option, Quantitative Disclosures [Line Items]
Unpaid principal balance	$ 245	$ 344
Difference between estimated fair value and unpaid principal balance	(27)	(45)
Carrying value at estimated fair value	218	299
Loans in nonaccrual status	58	89
Loans more than 90 days past due	23	41
Loans in nonaccrual status or more than 90 days past due, or both — difference between aggregate estimated fair value and unpaid principal balance	$ (24)	$ (36)

Fair Value (Financial Instrumen

Fair Value (Financial Instruments Carried at Other Than Fair Value) (Details) - USD ($) $ in Millions	Sep. 30, 2019	Dec. 31, 2018
Assets
Policy loans	$ 9,671	$ 9,699
Liabilities
Collateral financing arrangement	1,013	1,060
Junior subordinated debt securities	3,149	3,147
Separate account liabilities	190,357	175,556
Carrying Value
Assets
Mortgage loans	78,741	75,453
Policy loans	9,671	9,699
Other invested assets	1,143	1,177
Premiums, reinsurance and other receivables	3,632	3,658
Other assets	277	326
Liabilities
Policyholder account balances	116,170	114,040
Long-term debt	13,313	12,820
Collateral financing arrangement	1,013	1,060
Junior subordinated debt securities	3,149	3,147
Other liabilities	3,091	2,963
Separate account liabilities	114,274	104,010
Estimated Fair Value
Assets
Mortgage loans	81,906	76,379
Policy loans	11,841	11,366
Other invested assets	1,143	1,176
Premiums, reinsurance and other receivables	3,843	3,797
Other assets	275	350
Liabilities
Policyholder account balances	120,840	114,924
Long-term debt	15,715	13,611
Collateral financing arrangement	826	853
Junior subordinated debt securities	4,297	3,738
Other liabilities	3,971	3,518
Separate account liabilities	114,274	104,010
Estimated Fair Value | Level 1
Assets
Mortgage loans	0	0
Policy loans	0	0
Other invested assets	0	0
Premiums, reinsurance and other receivables	0	0
Other assets	0	0
Liabilities
Policyholder account balances	0	0
Long-term debt	0	0
Collateral financing arrangement	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	329	338
Other invested assets	800	793
Premiums, reinsurance and other receivables	957	903
Other assets	129	164
Liabilities
Policyholder account balances	0	0
Long-term debt	15,715	13,611
Collateral financing arrangement	0	0
Junior subordinated debt securities	4,297	3,738
Other liabilities	1,484	1,324
Separate account liabilities	114,274	104,010
Estimated Fair Value | Level 3
Assets
Mortgage loans	81,906	76,379
Policy loans	11,512	11,028
Other invested assets	343	383
Premiums, reinsurance and other receivables	2,886	2,894
Other assets	146	186
Liabilities
Policyholder account balances	120,840	114,924
Long-term debt	0	0
Collateral financing arrangement	826	853
Junior subordinated debt securities	0	0
Other liabilities	2,487	2,194
Separate account liabilities	$ 0	$ 0

Leases Lease Costs (Details)

Leases Lease Costs (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Lease Costs [Abstract]
Operating lease cost	$ 75		$ 219
Variable lease cost	9		32
Sublease income	(22)	$ (23)	(65)	$ (53)
Net lease cost	$ 62		$ 186

Leases (Details)

Leases (Details) $ in Millions	9 Months Ended
	Sep. 30, 2019USD ($)
Assets and Liabilities, Lessee [Abstract]
ROU asset	$ 1,543
Lease liability	1,639
Cash paid for amounts included in the measurement of lease liability - operating cash flows	208
ROU assets obtained in exchange for new lease liabilities	$ 272
Weighted-average remaining lease term	8 years
Weighted-average discount rate	3.30%
Lessee, Operating Lease, Liability, Payment, Due [Abstract]
Remainder of 2019	$ 86
2020	281
2021	253
2022	217
2023	204
Thereafter	853
Total undiscounted cash flows	1,894
Less: interest	255
Lease liability	$ 1,639

Leases - Prior to adoption (Det

Leases - Prior to adoption (Details) $ in Millions	Dec. 31, 2018USD ($)
Leases [Abstract]
2019	$ 292
2020	282
2021	260
2022	224
2023	209
Thereafter	859
Total	$ 2,126

Leases Leases - (Narrative) (De

Leases Leases - (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Lessee, Lease, Description [Line Items]
Operating Leases, Rent Expense, Net		$ 86		$ 257
Sublease income	$ 22	$ 23	$ 65	$ 53
Minimum
Lessee, Lease, Description [Line Items]
Lessee, Operating Lease, Term of Contract	1 year		1 year
Maximum
Lessee, Lease, Description [Line Items]
Lessee, Operating Lease, Term of Contract	16 years		16 years
Sublease Income | Minimum
Lessee, Lease, Description [Line Items]
Lessee, Operating Lease, Term of Contract	1 year		1 year
Sublease Income | Maximum
Lessee, Lease, Description [Line Items]
Lessee, Operating Lease, Term of Contract	10 years		10 years

Long-term Debt (Details)

Long-term Debt (Details) £ in Millions, $ in Millions, ¥ in Billions	9 Months Ended
	Sep. 30, 2019USD ($)	Sep. 30, 2019GBP (£)	Sep. 30, 2019JPY (¥)
Debt Instrument [Line Items]
Redemption Premium	$ 40
Debt Issuance Costs, Gross	9
Senior Debt GBP 400 Million June 2020 [Member]
Debt Instrument [Line Items]
Repayments of Debt	$ 509	£ 400
Debt Instrument, Interest Rate, Stated Percentage	5.25%		5.25%
Debt Instrument, Maturity Date	Jun. 29, 2020	Jun. 29, 2020
Senior Debt $368 Million February 2021 [Member]
Debt Instrument [Line Items]
Repayments of Debt	$ 368
Debt Instrument, Interest Rate, Stated Percentage	4.75%		4.75%
Debt Instrument, Maturity Date	Feb. 8, 2021	Feb. 8, 2021
Senior Debt Yen 25.2 Billion May 2026 [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount	$ 230		¥ 25.2
Debt Instrument, Interest Rate, Stated Percentage	0.495%		0.495%
Debt Instrument, Maturity Date	May 22, 2026	May 22, 2026
Senior Debt Yen 64.9 Billion May 2029 [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount	$ 591		¥ 64.9
Debt Instrument, Interest Rate, Stated Percentage	0.769%		0.769%
Debt Instrument, Maturity Date	May 23, 2029	May 23, 2029
Senior Debt Yen 10.7 Billion May 2031 [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount	$ 98		¥ 10.7
Debt Instrument, Interest Rate, Stated Percentage	0.898%		0.898%
Debt Instrument, Maturity Date	May 23, 2031	May 23, 2031
Senior Debt Yen 26.5 Billion May 2034 [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount	$ 241		¥ 26.5
Debt Instrument, Interest Rate, Stated Percentage	1.189%		1.189%
Debt Instrument, Maturity Date	May 23, 2034	May 23, 2034
Senior Debt Yen 24.4 Billion May 2039 [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount	$ 222		¥ 24.4
Debt Instrument, Interest Rate, Stated Percentage	1.385%		1.385%
Debt Instrument, Maturity Date	May 23, 2039	May 23, 2039

Equity Equity (Preferred Stock

Equity Equity (Preferred Stock Classification) (Details) - shares	Sep. 30, 2019	Dec. 31, 2018
Class of Stock [Line Items]
Preferred Stock, Shares Authorized	200,000,000	200,000,000
Preferred Stock, Shares Issued	26,032,200	26,032,200
Preferred Stock, Shares Outstanding	26,032,200	26,032,200
Series A Preferred Stock
Class of Stock [Line Items]
Preferred Stock, Shares Authorized	27,600,000	27,600,000
Preferred Stock, Shares Issued	24,000,000	24,000,000
Preferred Stock, Shares Outstanding	24,000,000	24,000,000
Series C Preferred Stock
Class of Stock [Line Items]
Preferred Stock, Shares Authorized	1,500,000	1,500,000
Preferred Stock, Shares Issued	1,500,000	1,500,000
Preferred Stock, Shares Outstanding	1,500,000	1,500,000
Series D Preferred Stock
Class of Stock [Line Items]
Preferred Stock, Shares Authorized	500,000	500,000
Preferred Stock, Shares Issued	500,000	500,000
Preferred Stock, Shares Outstanding	500,000	500,000
Series E Preferred Stock
Class of Stock [Line Items]
Preferred Stock, Shares Authorized	32,200	32,200
Preferred Stock, Shares Issued	32,200	32,200
Preferred Stock, Shares Outstanding	32,200	32,200
Series A Junior Preferred Stock
Class of Stock [Line Items]
Preferred Stock, Shares Authorized	10,000,000	10,000,000
Preferred Stock, Shares Issued	0	0
Preferred Stock, Shares Outstanding	0	0
Not Designated Preferred Stock
Class of Stock [Line Items]
Preferred Stock, Shares Authorized	160,367,800	160,367,800
Preferred Stock, Shares Issued	0	0
Preferred Stock, Shares Outstanding	0	0

Equity Equity (Preferred Stoc_2

Equity Equity (Preferred Stock Dividends) (Details) - USD ($) $ / shares in Units, $ in Millions	Aug. 31, 2019	Mar. 05, 2019	Feb. 15, 2019	Sep. 30, 2019	Jun. 30, 2019	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Sep. 30, 2019	Sep. 30, 2018
Preferred Stock
Dividends Payable [Line Items]
Dividends Payable, Date Declared		Mar. 5, 2019	Feb. 15, 2019	Aug. 15, 2019	May 15, 2019	Aug. 15, 2018	May 15, 2018	Mar. 5, 2018
Dividends Payable, Date of Record	Aug. 31, 2019	Feb. 28, 2019	Feb. 28, 2019	Sep. 1, 2019	May 31, 2019	Aug. 31, 2018	May 31, 2018	Feb. 28, 2018
Dividends Payable, Date to be Paid		Mar. 15, 2019	Mar. 15, 2019	Sep. 16, 2019	Jun. 17, 2019	Sep. 17, 2018	Jun. 15, 2018	Mar. 15, 2018
Series A Preferred Stock
Dividends Payable [Line Items]
Preferred Stock, Dividends Per Share, Declared	$ 0	$ 0.250	$ 0	$ 0.253	$ 0.261	$ 0.256	$ 0.256	$ 0.250	$ 0.764	$ 0.762
Dividends, Preferred Stock, Cash	$ 0	$ 6	$ 0	$ 6	$ 6	$ 6	$ 7	$ 6	$ 18	$ 19
Series C Preferred Stock
Dividends Payable [Line Items]
Preferred Stock, Dividends Per Share, Declared	$ 0	$ 0	$ 0	$ 0	$ 26.250	$ 0	$ 26.250	$ 0	$ 26.250	$ 26.250
Dividends, Preferred Stock, Cash	$ 0	$ 0	$ 0	$ 0	$ 39	$ 0	$ 39	$ 0	$ 39	$ 39
Series D Preferred Stock
Dividends Payable [Line Items]
Preferred Stock, Dividends Per Share, Declared	$ 29.375	$ 0	$ 29.375	$ 0	$ 0	$ 28.233	$ 0	$ 0	$ 58.750	$ 28.233
Dividends, Preferred Stock, Cash	$ 15	$ 0	$ 15	$ 0	$ 0	$ 14	$ 0	$ 0	$ 30	$ 14
Series E Preferred Stock
Dividends Payable [Line Items]
Preferred Stock, Dividends Per Share, Declared	$ 351.563	$ 0	$ 351.563	$ 0	$ 351.563	$ 394.531	$ 0	$ 0	$ 1,054.689	$ 394.531
Dividends, Preferred Stock, Cash	$ 11	$ 0	$ 11	$ 0	$ 12	$ 12	$ 0	$ 0	$ 34	$ 12

Equity Equity (Common Stock Div

Equity Equity (Common Stock Dividends) (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended						6 Months Ended		9 Months Ended
	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Jun. 30, 2019	Jun. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Dividends Payable [Line Items]
Dividends, Common Stock, Cash	$ 413			$ 419			$ 824	$ 844
Common Stock [Member]
Dividends Payable [Line Items]
Dividends Payable, Date Declared	Jul. 8, 2019	Apr. 23, 2019	Jan. 7, 2019	Jul. 6, 2018	Apr. 24, 2018	Jan. 5, 2018
Dividends Payable, Date of Record	Aug. 6, 2019	May 7, 2019	Feb. 5, 2019	Aug. 6, 2018	May 7, 2018	Feb. 5, 2018
Dividends Payable, Date to be Paid	Sep. 13, 2019	Jun. 13, 2019	Mar. 13, 2019	Sep. 13, 2018	Jun. 13, 2018	Mar. 13, 2018
Common Stock, Dividends, Per Share, Cash Paid	$ 0.440	$ 0.440	$ 0.420	$ 0.420	$ 0.420	$ 0.400
Dividends, Common Stock, Cash	$ 413	$ 419	$ 405	$ 419	$ 428	$ 416			$ 1,237	$ 1,263

Equity (Common Stock Repurchase

Equity (Common Stock Repurchase Authorization) (Details) - USD ($) $ in Millions	Sep. 30, 2019	Jul. 31, 2019	Nov. 01, 2018	May 22, 2018	Nov. 01, 2017
Equity, Class of Treasury Stock [Line Items]
Stock Repurchase Program, Authorized Amount		$ 2,000	$ 2,000	$ 1,500	$ 2,000
July2019Authorization [Member]
Equity, Class of Treasury Stock [Line Items]
Stock Repurchase Program, Remaining Authorized Repurchase Amount	$ 1,235
November2018Authorization [Member]
Equity, Class of Treasury Stock [Line Items]
Stock Repurchase Program, Remaining Authorized Repurchase Amount	0
May2018Authorization [Member]
Equity, Class of Treasury Stock [Line Items]
Stock Repurchase Program, Remaining Authorized Repurchase Amount	0
November2017Authorization [Member]
Equity, Class of Treasury Stock [Line Items]
Stock Repurchase Program, Remaining Authorized Repurchase Amount	$ 0

Equity (Common Stock - Narrativ

Equity (Common Stock - Narrative) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Jun. 30, 2019	Jun. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Equity [Abstract]
Treasury Stock, Shares, Acquired					44,035,255	59,602,926
Treasury Stock, Value, Acquired, Cost Method	$ 785	$ 636	$ 1,250	$ 2,156	$ 2,000	$ 2,800

Equity (Stock-Based Compensatio

Equity (Stock-Based Compensation Plans - Narrative) (Details) - shares	3 Months Ended	12 Months Ended
	Mar. 31, 2019	Dec. 31, 2018
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		87.70%
Vested in period		1,594,846
Issued in period	1,398,680
Performance Units
Equity - Stock-based Compensation Plans [Line Items]
Vested in period		212,464
Paid in period	186,331

Equity Equity (Dividend Restric

Equity Equity (Dividend Restriction) (Narrative) (Details) $ in Millions	9 Months Ended
	Sep. 30, 2019USD ($)
American Life Insurance Company
Statutory Accounting Practices [Line Items]
Cash Dividends Paid to Parent Company by Consolidated Subsidiaries	$ 600

Equity (Components of Accumulat

Equity (Components of Accumulated Other Comprehensive Income (Loss)) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance, beginning of period	$ 11,631	$ 2,854	$ 1,722	$ 7,427
OCI before reclassifications	4,318	(2,357)	17,300	(9,893)
Deferred income tax benefit (expense)	(971)	402	(3,922)	2,051
AOCI before reclassifications, net of income tax	14,978	899	15,100	(415)
Amounts reclassified from AOCI	282	5	96	500
Deferred income tax benefit (expense)	(63)	96	(20)	(89)
Amounts reclassified from AOCI, net of income tax	219	101	76	411
Balance, end of period	15,197	1,000	15,197	1,000
Unrealized Investment Gains (Losses), Net of Related Offsets
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance, beginning of period	16,340	8,538	7,042	12,757
OCI before reclassifications	4,064	(1,953)	16,263	(8,860)
Deferred income tax benefit (expense)	(829)	436	(3,634)	1,977
AOCI before reclassifications, net of income tax	19,575	7,021	19,671	5,874
Amounts reclassified from AOCI	(84)	(30)	(213)	98
Deferred income tax benefit (expense)	18	7	48	(22)
Amounts reclassified from AOCI, net of income tax	(66)	(23)	(165)	76
Balance, end of period	19,509	6,998	19,509	6,998
Unrealized Gains (Losses) on Derivatives
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance, beginning of period	2,041	1,165	1,613	905
OCI before reclassifications	658	(295)	1,305	(506)
Deferred income tax benefit (expense)	(140)	(22)	(287)	77
AOCI before reclassifications, net of income tax	2,559	848	2,631	476
Amounts reclassified from AOCI	337	4	221	309
Deferred income tax benefit (expense)	(75)	96	(49)	(47)
Amounts reclassified from AOCI, net of income tax	262	100	172	262
Balance, end of period	2,821	948	2,821	948
Foreign Currency Translation Adjustments
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance, beginning of period	(4,766)	(4,670)	(4,905)	(4,390)
OCI before reclassifications	(404)	(240)	(266)	(657)
Deferred income tax benefit (expense)	(2)	15	(1)	24
AOCI before reclassifications, net of income tax	(5,172)	(4,895)	(5,172)	(5,023)
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	(5,172)	(4,895)	(5,172)	(4,895)
Defined Benefit Plans Adjustment
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance, beginning of period	(1,984)	(2,179)	(2,028)	(1,845)
OCI before reclassifications	0	131	(2)	130
Deferred income tax benefit (expense)	0	(27)	0	(27)
AOCI before reclassifications, net of income tax	(1,984)	(2,075)	(2,030)	(1,742)
Amounts reclassified from AOCI	29	31	88	93
Deferred income tax benefit (expense)	(6)	(7)	(19)	(20)
Amounts reclassified from AOCI, net of income tax	23	24	69	73
Balance, end of period	$ (1,961)	$ (2,051)	(1,961)	(2,051)
Accounting Standards Update 2017-12
Accumulated Other Comprehensive Income (Loss) [Line Items]
Amounts reclassified from AOCI			26
Deferred income tax benefit (expense)			(5)
Amounts reclassified from AOCI, net of income tax			21
Accounting Standards Update 2017-12 | Unrealized Investment Gains (Losses), Net of Related Offsets
Accumulated Other Comprehensive Income (Loss) [Line Items]
Amounts reclassified from AOCI			4
Deferred income tax benefit (expense)			(1)
Amounts reclassified from AOCI, net of income tax			3
Accounting Standards Update 2017-12 | Unrealized Gains (Losses) on Derivatives
Accumulated Other Comprehensive Income (Loss) [Line Items]
Amounts reclassified from AOCI			22
Deferred income tax benefit (expense)			(4)
Amounts reclassified from AOCI, net of income tax			18
Accounting Standards Update 2017-12 | Foreign Currency Translation Adjustments
Accumulated Other Comprehensive Income (Loss) [Line Items]
Amounts reclassified from AOCI			0
Deferred income tax benefit (expense)			0
Amounts reclassified from AOCI, net of income tax			0
Accounting Standards Update 2017-12 | Defined Benefit Plans Adjustment
Accumulated Other Comprehensive Income (Loss) [Line Items]
Amounts reclassified from AOCI			0
Deferred income tax benefit (expense)			0
Amounts reclassified from AOCI, net of income tax			$ 0
Accounting Standards Update 2016-01
Accumulated Other Comprehensive Income (Loss) [Line Items]
Amounts reclassified from AOCI				(425)
Deferred income tax benefit (expense)				1,337
Amounts reclassified from AOCI, net of income tax				912
Accounting Standards Update 2016-01 | Unrealized Investment Gains (Losses), Net of Related Offsets
Accumulated Other Comprehensive Income (Loss) [Line Items]
Amounts reclassified from AOCI				(425)
Deferred income tax benefit (expense)				1,473
Amounts reclassified from AOCI, net of income tax				1,048
Accounting Standards Update 2016-01 | Unrealized Gains (Losses) on Derivatives
Accumulated Other Comprehensive Income (Loss) [Line Items]
Amounts reclassified from AOCI				0
Deferred income tax benefit (expense)				210
Amounts reclassified from AOCI, net of income tax				210
Accounting Standards Update 2016-01 | Foreign Currency Translation Adjustments
Accumulated Other Comprehensive Income (Loss) [Line Items]
Amounts reclassified from AOCI				0
Deferred income tax benefit (expense)				36
Amounts reclassified from AOCI, net of income tax				36
Accounting Standards Update 2016-01 | Defined Benefit Plans Adjustment
Accumulated Other Comprehensive Income (Loss) [Line Items]
Amounts reclassified from AOCI				0
Deferred income tax benefit (expense)				(382)
Amounts reclassified from AOCI, net of income tax				(382)
MetLife Afore
Accumulated Other Comprehensive Income (Loss) [Line Items]
Amounts reclassified from AOCI				92
MetLife Afore | Unrealized Investment Gains (Losses), Net of Related Offsets
Accumulated Other Comprehensive Income (Loss) [Line Items]
Amounts reclassified from AOCI				0
MetLife Afore | Unrealized Gains (Losses) on Derivatives
Accumulated Other Comprehensive Income (Loss) [Line Items]
Amounts reclassified from AOCI				0
MetLife Afore | Foreign Currency Translation Adjustments
Accumulated Other Comprehensive Income (Loss) [Line Items]
Amounts reclassified from AOCI				92
MetLife Afore | Defined Benefit Plans Adjustment
Accumulated Other Comprehensive Income (Loss) [Line Items]
Amounts reclassified from AOCI				$ 0

Equity (Reclassifications Out o

Equity (Reclassifications Out of Accumulated Other Comprehensive Income (Loss)) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Jun. 30, 2019	Jun. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net investment gains (losses)	$ 161	$ 117			$ 237	$ (443)
Net derivative gains (losses)	1,254	(378)			2,093	(88)
Net investment income	4,623	4,486			14,224	12,704
Other expenses	3,443	3,469			10,058	10,319
Income (loss) from continuing operations before provision for income tax	2,791	1,079			6,832	3,836
Income tax (expense) benefit	(601)	(164)			(1,511)	(770)
Net income (loss)	2,190	915	$ 3,131	$ 2,151	5,321	3,066
Reclassification out of Accumulated Other Comprehensive Income
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net income (loss)	(219)	(101)			(76)	(411)
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)	84	101			200	(36)
Net derivative gains (losses)	12	(80)			28	(71)
Net investment income	(12)	9			(15)	9
Income (loss) from continuing operations before provision for income tax	84	30			213	(98)
Income tax (expense) benefit	(18)	(7)			(48)	22
Net income (loss)	66	23			165	(76)
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	(337)	(4)			(221)	(309)
Income tax (expense) benefit	75	(96)			49	47
Net income (loss)	(262)	(100)			(172)	(262)
Reclassification out of Accumulated Other Comprehensive Income | Unrealized Gains (Losses) on Derivatives | Interest Rate Contract
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net investment gains (losses)	1	0			(1)	0
Net derivative gains (losses)	0	(2)			0	18
Net investment income	5	5			16	15
Other expenses	1	0			2	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 investment gains (losses)	(344)	0			(236)	0
Net derivative gains (losses)	0	(6)			0	(342)
Net investment income	0	(1)			(3)	(2)
Other expenses	0	0			1	1
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)	(36)	(37)			(108)	(108)
Amortization of prior service (costs) credit	7	6			20	15
Income (loss) from continuing operations before provision for income tax	(29)	(31)			(88)	(93)
Income tax (expense) benefit	6	7			19	20
Net income (loss)	$ (23)	$ (24)			$ (69)	$ (73)

Other Revenues and Other Expe_3

Other Revenues and Other Expenses Other Revenues (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	$ 313	$ 329	$ 974	$ 979
Other revenues	419	479	1,391	1,428
Prepaid legal plans
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	87	74	259	220
Fee-based investment management
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	67	74	213	219
Recordkeeping and administrative services
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	52	56	154	170
Administrative services-only contracts
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	53	53	159	162
Other revenue from service contracts from customers
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	54	72	189	208
Other Income
Disaggregation of Revenue [Line Items]
Other revenues	$ 106	$ 150	$ 417	$ 449

Other Expenses (Other Expenses)

Other Expenses (Other Expenses) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Other Income and Expenses [Abstract]
Employee related costs (1)	$ 876	$ 921	$ 2,714	$ 2,752
Third party staffing costs	425	435	1,214	1,217
General and administrative expenses	273	290	733	884
Pension, postretirement and postemployment benefit costs	57	45	170	141
Premium taxes, other taxes, and licenses & fees	164	193	508	559
Commissions and other variable expenses	1,514	1,403	4,433	4,257
Capitalization of DAC	(882)	(810)	(2,531)	(2,440)
Amortization of DAC and VOBA	797	732	2,110	2,132
Amortization of negative VOBA	(4)	(7)	(24)	(45)
Interest expense on debt	223	267	731	862
Total other expenses	3,443	3,469	10,058	10,319
Net change in cash surrender value of investments, net of premiums paid	$ (59)	$ (40)	$ (176)	$ (57)

Other Expenses (Restructuring C

Other Expenses (Restructuring Charges) (Details) - Unit Cost Initiative - Other expenses - Severance - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Restructuring Cost and Reserve [Line Items]
Balance, beginning of period	$ 20	$ 20	$ 23	$ 22
Restructuring charges	40	17	61	35
Cash payments	(13)	(17)	(37)	(37)
Balance, end of period	47	20	47	20
Total restructuring charges incurred since inception of initiative	$ 197	$ 108	$ 197	$ 108

Employee Benefit Plans (Net Per

Employee Benefit Plans (Net Periodic Benefit Costs) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Pension Benefits
Net periodic benefit costs [Abstract]
Service costs	$ 59	$ 58	$ 174	$ 176
Interest costs	104	95	312	287
Expected return on plan assets	(122)	(133)	(367)	(400)
Amortization of net actuarial (gains) losses	49	46	145	134
Amortization of prior service costs (credit)	(4)	(1)	(12)	(1)
Net periodic benefit costs (credit)	86	65	252	196
Other Postretirement Benefits
Net periodic benefit costs [Abstract]
Service costs	2	1	4	4
Interest costs	13	13	39	39
Expected return on plan assets	(16)	(18)	(50)	(54)
Amortization of net actuarial (gains) losses	(13)	(9)	(37)	(26)
Amortization of prior service costs (credit)	(3)	(5)	(8)	(14)
Net periodic benefit costs (credit)	$ (17)	$ (18)	$ (52)	$ (51)

Income Tax (Narrative) (Details

Income Tax (Narrative) (Details)	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Income Tax Disclosure [Abstract]
Effective Income Tax Rate Reconciliation, Percent	22.00%	15.00%	22.00%	20.00%

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		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Jun. 30, 2019	Jun. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Weighted Average Shares:
Weighted average common stock outstanding - basic	929.6	992.7			944	1,014.6
Incremental common shares from assumed exercise or issuance of stock-based awards	6.8	8			6.8	8.2
Weighted average common stock outstanding - diluted	936.4	1,000.7			950.8	1,022.8
Net Income (Loss):
Net income (loss)	$ 2,190	$ 915	$ 3,131	$ 2,151	$ 5,321	$ 3,066
Less: Net income (loss) attributable to noncontrolling interests	6	3			15	10
Less: Preferred stock dividends	32	32	$ 89	$ 52	121	84
Net income (loss) available to MetLife, Inc.’s common shareholders	$ 2,152	$ 880			$ 5,185	$ 2,972
Basic	$ 2.31	$ 0.89			$ 5.49	$ 2.93
Diluted	$ 2.30	$ 0.88			$ 5.45	$ 2.91

Contingencies, Commitments an_2

Contingencies, Commitments and Guarantees (Contingencies - Narrative) (Details) $ in Millions	Jul. 29, 2019USD ($)	Sep. 30, 2019USD ($)Claims	Sep. 30, 2018Claims	Dec. 31, 2018Claims
Loss Contingencies
Maximum estimate of aggregate costs to resolve matter	$ 80
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		$ 275
Asbestos Related Claims
Loss Contingencies
Asbestos-Related Claims | Claims		2,493	2,558	3,359

Contingencies, Commitments an_3

Contingencies, Commitments and Guarantees (Commitments and Guarantees - Narrative) (Details) - USD ($) $ in Millions	Sep. 30, 2019	Dec. 31, 2018
Contingencies, Commitments and Guarantees [Abstract]
Liabilities for indemnities, guarantees and commitments	$ 7	$ 7
Cumulative maximum indemnities and guarantees contractual limitation	634
Minimum
Contingencies, Commitments and Guarantees [Abstract]
Indemnities and guarantees contractual limitation range	1
Maximum
Contingencies, Commitments and Guarantees [Abstract]
Indemnities and guarantees contractual limitation range	329
Mortgage Loan Commitments
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Fair Value Disclosure, Off-balance Sheet Risks, Face Amount, Liability	4,400	4,000
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	$ 7,500	$ 7,700

Subsequent Events (Details)

Subsequent Events (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended			6 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Sep. 30, 2018	Jun. 30, 2019	Jun. 30, 2018	Jul. 31, 2019	Nov. 01, 2018	May 22, 2018	Nov. 01, 2017
Subsequent Event [Line Items]
Stock Repurchase Program, Authorized Amount						$ 2,000	$ 2,000	$ 1,500	$ 2,000
Estimated aggregate dividend payment		$ 413	$ 419	$ 824	$ 844
Subsequent Event [Member]
Subsequent Event [Line Items]
Dividends Payable, Date Declared	Oct. 22, 2019
Approved dividend, amount per share	$ 0.44
Estimated aggregate dividend payment	$ 406
Dividends Payable, Date to be Paid	Dec. 13, 2019
Dividends Payable, Date of Record	Nov. 5, 2019