Subsequent Events	3 Months Ended
Mar. 31, 2024
Subsequent Events [Abstract]
Subsequent Events	20. Subsequent Events Common Stock Repurchase Authorization On May 1, 2024, MetLife, Inc. announced that its Board of Directors authorized an additional $3.0 billion of common stock repurchases. Senior Notes In April 2024, MetLife, Inc. redeemed for $438 million in cash all of its £350 million aggregate principal amount outstanding 5.375% senior notes due December 2024.

The entire disclosure for significant events or transactions that occurred after the balance sheet date through the date the financial statements were issued or the date the financial statements were available to be issued. Examples include: the sale of a capital stock issue, purchase of a business, settlement of litigation, catastrophic loss, significant foreign exchange rate changes, loans to insiders or affiliates, and transactions not in the ordinary course of business.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 855
-Name Accounting Standards Codification
-Publisher FASB
-URI https://asc.fasb.org//855/tableOfContent

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 855
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483399/855-10-50-2

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