Separate Account Liabilities Balance Sheet (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Separate Account, Liability [Line Items]
Separate account liabilities	$ 139,504	$ 144,634
Latin America | Pension Plan
Separate Account, Liability [Line Items]
Separate account liabilities	38,765	41,320	$ 39,428	$ 37,631
Stable Value and Risk Solutions | RIS
Separate Account, Liability [Line Items]
Separate account liabilities	40,319	41,343	48,265	58,473
Annuities | RIS
Separate Account, Liability [Line Items]
Separate account liabilities	11,001	11,659	11,694	21,292
Annuities | MetLife Holdings
Separate Account, Liability [Line Items]
Separate account liabilities	27,829	29,224	$ 28,499	$ 40,173
Insurance, Other
Separate Account, Liability [Line Items]
Separate account liabilities	$ 21,590	$ 21,088