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Future Policy Benefits - FPB Income Statement (Details) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2024 | Mar. 31, 2023
Principal Transaction Revenue [Line Items] |  |
Gross Premiums or Assessments (1) | $ 3,208 | $ 3,046
Interest Expense (2) | 1,397 | 1,327
Fixed & Immediate Annuities | RIS |  |
Principal Transaction Revenue [Line Items] |  |
Gross Premiums or Assessments (1) | 344 | 245
Interest Expense (2) | 759 | 703
Whole and Term Life & Endowments | Asia |  |
Principal Transaction Revenue [Line Items] |  |
Gross Premiums or Assessments (1) | 290 | 282
Interest Expense (2) | 76 | 80
Accident & health insurance | Asia |  |
Principal Transaction Revenue [Line Items] |  |
Gross Premiums or Assessments (1) | 811 | 908
Interest Expense (2) | 62 | 64
Fixed Annuity | Latin America |  |
Principal Transaction Revenue [Line Items] |  |
Gross Premiums or Assessments (1) | 261 | 296
Interest Expense (2) | 81 | 83
Long-term Care | MetLife Holdings |  |
Principal Transaction Revenue [Line Items] |  |
Gross Premiums or Assessments (1) | 181 | 183
Interest Expense (2) | 198 | 191
Fixed & Immediate Annuities for Deferred Profit Liabilities | RIS |  |
Principal Transaction Revenue [Line Items] |  |
Interest Expense (2) | 44 | 40
Whole and Term Life & Endowments for Deferred Profit Liabilities | Asia |  |
Principal Transaction Revenue [Line Items] |  |
Interest Expense (2) | 9 | 7
Accident and Health Insurance Product Line for Deferred Profit Liabilities | Asia |  |
Principal Transaction Revenue [Line Items] |  |
Interest Expense (2) | 5 | 4
Fixed Annuity for Deferred Profit Liabilities | Latin America |  |
Principal Transaction Revenue [Line Items] |  |
Interest Expense (2) | 5 | 6
Variable Life | Asia |  |
Principal Transaction Revenue [Line Items] |  |
Gross Premiums or Assessments (1) | 29 | 5
Interest Expense (2) | 4 | 5
Universal and Variable Universal Life | Asia |  |
Principal Transaction Revenue [Line Items] |  |
Gross Premiums or Assessments (1) | (33) | (12)
Interest Expense (2) | 1 | 2
Universal and Variable Universal Life | MetLife Holdings |  |
Principal Transaction Revenue [Line Items] |  |
Gross Premiums or Assessments (1) | 167 | 192
Interest Expense (2) | 32 | 30
Long-Duration Insurance, Other |  |
Principal Transaction Revenue [Line Items] |  |
Gross Premiums or Assessments (1) | 1,158 | 947
Interest Expense (2) | $ 121 | $ 112

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