XML 31 R1.htm IDEA: XBRL DOCUMENT

Document and Entity Information - USD ($) $ in Billions	12 Months Ended
Document and Entity Information - USD ($) $ in Billions	Dec. 31, 2021	Feb. 11, 2022	Jun. 30, 2021
Entity Information [Line Items]
Document Type	10-K
Entity Registrant Name	MetLife, Inc.
Document Annual Report	true
Document Period End Date	Dec. 31, 2021
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 Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
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		825,078,244
Amendment Flag	false
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	FY
Current Fiscal Year End Date	--12-31
Entity Public Float			$ 51.5
Documents Incorporated by Reference [Text Block]	DOCUMENTS INCORPORATED BY REFERENCE Part III of this Form 10-K incorporates by reference certain information from the registrant’s definitive proxy statement for the Annual Meeting of Shareholders to be held on June 21, 2022, to be filed by the registrant with the Securities and Exchange Commission pursuant to Regulation 14A not later than 120 days after the year ended December 31, 2021.
ICFR Auditor Attestation Flag	true
Common Stock
Entity Information [Line Items]
Title of 12(b) Security	Common Stock, par value $0.01
Trading Symbol	MET
Security Exchange Name	NYSE
Floating Rate Non-Cumulative Preferred Stock, Series A, par value $0.01
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 1/1,000th 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 1/1,000th interest in a share of 5.625% Non-Cumulative Preferred Stock, Series E
Trading Symbol	MET PRE
Security Exchange Name	NYSE
Depositary Shares, each representing a 1/1,000th interest in a share of 4.75% Non-Cumulative Preferred Stock, Series F
Entity Information [Line Items]
Title of 12(b) Security	Depositary Shares, each representing a 1/1,000th interest in a share of 4.75% Non-Cumulative Preferred Stock, Series F
Trading Symbol	MET PRF
Security Exchange Name	NYSE
Fixed-to-Floating Rate Non-Cumulative Preferred Stock, Series D, par value $0.01
Entity Information [Line Items]
Title of 12(g) Security	Fixed-to-Floating Rate Non-Cumulative Preferred Stock, Series D, par value $0.01
Fixed Rate Reset Non-Cumulative Preferred Stock, Series G, par value $0.01
Entity Information [Line Items]
Title of 12(g) Security	Fixed Rate Reset Non-Cumulative Preferred Stock, Series G, par value $0.01