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Investments - Summary (Details) - USD ($) $ in Millions | Mar. 31, 2025 | Dec. 31, 2024 | Mar. 31, 2024 | Dec. 31, 2023
--- | --- | --- | --- | ---
Summary of investments |  |  |  |
Allowance for credit losses | $ 46 | $ 54 | $ 60 | $ 63
Ameriprise Financial |  |  |  |
Summary of investments |  |  |  |
Available-for-Sale securities, at fair value | 54,150 | 52,153 |  |
Mortgage loans (allowance for credit losses: 2025, $15; 2024, $14) | 2,423 | 2,354 |  |
Policy loans | 991 | 982 |  |
Other investments (allowance for credit losses: 2025, $6; 2024, $6) | 882 | 934 |  |
Total | 58,446 | 56,423 |  |
Ameriprise Financial | Mortgage loans |  |  |  |
Summary of investments |  |  |  |
Allowance for credit losses | 15 | 14 |  |
Ameriprise Financial | Other investments |  |  |  |
Summary of investments |  |  |  |
Allowance for credit losses | $ 6 | $ 6 |  |

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