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Investments - Net Realized Gains and Losses on Available-for-Sale Securities (Details) - Ameriprise Financial - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2024 | Sep. 30, 2023 | Sep. 30, 2024 | Sep. 30, 2023
Investments |  |  |  |
Gross realized investment gains | $ 31 | $ 0 | $ 35 | $ 10
Gross realized investment losses | (33) | (46) | (36) | (58)
Credit reversals (losses) | 0 | 8 | (3) | 21
Other impairments | 0 | 0 | 0 | (2)
Total | (2) | (38) | (4) | (29)
Realized gains or losses on Available-for-Sale securities (less than) | $ (2) | $ (38) | $ (4) | $ (29)

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