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Investments - Net Realized Gains and Losses on Available-for-Sale Securities (Details) - Ameriprise Financial - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2024 | Jun. 30, 2023 | Jun. 30, 2024 | Jun. 30, 2023
Investments |  |  |  |
Gross realized investment gains | $ 4 | $ 0 | $ 4 | $ 10
Gross realized investment losses | (3) | (10) | (3) | (12)
Credit reversals (losses) | (3) | 16 | (3) | 13
Other impairments | 0 | 0 | 0 | (2)
Total | (2) | 6 | (2) | 9
Realized gains or losses on Available-for-Sale securities (less than) | $ (2) | $ 6 | $ (2) | $ 9

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