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Investments - Mortgage Loans (Details) - Commercial Real Estate - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2025 | Jun. 30, 2024 | Jun. 30, 2025 | Jun. 30, 2024
Mortgage Loans on Real Estate [Line Items] |  |  |  |
New mortgage loans | $ 64 | $ 78 | $ 97 | $ 137
Mortgage loans fully repaid | 34 | 32 | 64 | 34
Mortgage loans foreclosed | $ 0 | $ 0 | $ 0 | $ 0

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