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Separate Account Liabilities Balance Sheet (Details) - USD ($) $ in Millions | Mar. 31, 2024 | Dec. 31, 2023 | Mar. 31, 2023 | Dec. 31, 2022
--- | --- | --- | --- | ---
Separate Account, Liability [Line Items] |  |  |  |
Separate account liabilities | $ 141,003 | $ 144,634 |  |
Latin America | Pension Plan |  |  |  |
Separate Account, Liability [Line Items] |  |  |  |
Separate account liabilities | 38,512 | 41,320 | $ 42,211 | $ 39,428
Stable Value and Risk Solutions | RIS |  |  |  |
Separate Account, Liability [Line Items] |  |  |  |
Separate account liabilities | 39,451 | 41,343 | 45,687 | 48,265
Annuities | RIS |  |  |  |
Separate Account, Liability [Line Items] |  |  |  |
Separate account liabilities | 11,465 | 11,659 | 12,219 | 11,694
Annuities | MetLife Holdings |  |  |  |
Separate Account, Liability [Line Items] |  |  |  |
Separate account liabilities | 29,866 | 29,224 | $ 29,320 | $ 28,499
Insurance, Other |  |  |  |
Separate Account, Liability [Line Items] |  |  |  |
Separate account liabilities | $ 21,709 | $ 21,088 |  |

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