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REINSURANCE - Narrative (Details) - USD ($) $ in Millions |  |  | 9 Months Ended |
--- | --- | --- | --- | ---
Jul. 31, 2025 | Apr. 01, 2025 | Sep. 30, 2025 | Dec. 31, 2024
Reinsurance Retention [Line Items] |  |  |  |  |
Reinsurance per life for single lives, amount retained |  |  |  | $ 25 |
Reinsurance per life for joint lives, amount retained |  |  |  | $ 30 |
Reinsurance retention policy, percentage of excess reinsured |  |  |  | 100.00% |
Cash and cash equivalents | [1] |  |  | $ 13,604 | $ 6,964
RGA Reinsurance Company |  |  |  |  |
Reinsurance Retention [Line Items] |  |  |  |  |
Percentage of loans receivable, fair value disclosure |  | 75.00% | 75.00% |  |
Fixed maturity securities |  |  |  | 266 |
Options |  |  |  | 29 |
Cash and cash equivalents |  |  |  | $ 3 |
[1] | See Note 2 of the Notes to these Consolidated Financial Statements for details of balances with VIEs.

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