Subordinated Debt Securities	3 Months Ended
Mar. 31, 2026
Debt Disclosure [Abstract]
Subordinated Borrowings Disclosure [Text Block]	12. Subordinated Debt Securities Subordinated Debt Issuance In February 2026, MetLife, Inc. issued $1.0 billion of 5.850% Fixed-to-Fixed Reset Rate Subordinated Debentures due March 2056 (the “5.850% Subordinated Debt”), interest on which is payable semi-annually. In connection with the issuance, MetLife, Inc. incurred $12 million of related costs which will be amortized over the term of the debentures. The 5.850% Subordinated Debt ranks higher in priority than MetLife, Inc.’s junior subordinated debt securities, subordinate to its senior notes and equal to its 6.350% Fixed-to-Fixed Reset Rate Subordinated Debentures due March 2055.

Subordinated Debt Securities

3 Months Ended

Mar. 31, 2026

Subordinated Borrowings Disclosure [Text Block]

12. Subordinated Debt Securities

Subordinated Debt Issuance

In February 2026, MetLife, Inc. issued $1.0 billion of 5.850% Fixed-to-Fixed Reset Rate Subordinated Debentures due March 2056 (the “5.850% Subordinated Debt”), interest on which is payable semi-annually. In connection with the issuance, MetLife, Inc. incurred $12 million of related costs which will be amortized over the term of the debentures. The 5.850% Subordinated Debt ranks higher in priority than MetLife, Inc.’s junior subordinated debt securities, subordinate to its senior notes and equal to its 6.350% Fixed-to-Fixed Reset Rate Subordinated Debentures due March 2055.