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Investments - Available-for Sale Securities in Continuous Unrealized Loss Position (Details) - Ameriprise Financial $ in Millions | Sep. 30, 2025 USD ($) security | Dec. 31, 2024 USD ($) security
--- | --- | ---
Number of securities |  |
Less than 12 months | security | 230 | 546
12 months or more | security | 1,153 | 1,268
Total | security | 1,383 | 1,814
Fair Value |  |
Less than 12 months | $ 4,528 | $ 13,000
12 months or more | 15,135 | 16,991
Total | 19,663 | 29,991
Unrealized Losses |  |
Less than 12 months | (83) | (284)
12 months or more | (1,235) | (1,837)
Total | $ (1,318) | $ (2,121)
Available-for-Sale Securities with gross unrealized losses considered investment grade (as a percent) | 96.00% | 97.00%
Corporate debt securities |  |
Number of securities |  |
Less than 12 months | security | 124 | 282
12 months or more | security | 276 | 291
Total | security | 400 | 573
Fair Value |  |
Less than 12 months | $ 1,869 | $ 5,328
12 months or more | 4,098 | 4,042
Total | 5,967 | 9,370
Unrealized Losses |  |
Less than 12 months | (72) | (178)
12 months or more | (353) | (533)
Total | $ (425) | $ (711)
Residential mortgage backed securities |  |
Number of securities |  |
Less than 12 months | security | 79 | 203
12 months or more | security | 630 | 659
Total | security | 709 | 862
Fair Value |  |
Less than 12 months | $ 1,992 | $ 6,728
12 months or more | 8,171 | 9,122
Total | 10,163 | 15,850
Unrealized Losses |  |
Less than 12 months | (9) | (96)
12 months or more | (726) | (1,037)
Total | $ (735) | $ (1,133)
Commercial mortgage backed securities |  |
Number of securities |  |
Less than 12 months | security | 8 | 24
12 months or more | security | 172 | 233
Total | security | 180 | 257
Fair Value |  |
Less than 12 months | $ 117 | $ 478
12 months or more | 2,454 | 3,298
Total | 2,571 | 3,776
Unrealized Losses |  |
Less than 12 months | (1) | (6)
12 months or more | (119) | (213)
Total | $ (120) | $ (219)
Asset backed securities |  |
Number of securities |  |
Less than 12 months | security | 2 | 15
12 months or more | security | 32 | 37
Total | security | 34 | 52
Fair Value |  |
Less than 12 months | $ 20 | $ 309
12 months or more | 284 | 384
Total | 304 | 693
Unrealized Losses |  |
Less than 12 months | 0 | (2)
12 months or more | (23) | (37)
Total | $ (23) | $ (39)
State and municipal obligations |  |
Number of securities |  |
Less than 12 months | security | 9 | 21
12 months or more | security | 42 | 45
Total | security | 51 | 66
Fair Value |  |
Less than 12 months | $ 53 | $ 57
12 months or more | 123 | 133
Total | 176 | 190
Unrealized Losses |  |
Less than 12 months | (1) | (2)
12 months or more | (14) | (17)
Total | $ (15) | $ (19)
U.S. government and agency obligations |  |
Number of securities |  |
Less than 12 months | security | 8 | 1
12 months or more | security | 0 | 0
Total | security | 8 | 1
Fair Value |  |
Less than 12 months | $ 477 | $ 100
12 months or more | 0 | 0
Total | 477 | 100
Unrealized Losses |  |
Less than 12 months | 0 | 0
12 months or more | 0 | 0
Total | $ 0 | $ 0
Foreign government bonds and obligations |  |
Number of securities |  |
Less than 12 months | security | 0 | 0
12 months or more | security | 1 | 3
Total | security | 1 | 3
Fair Value |  |
Less than 12 months | $ 0 | $ 0
12 months or more | 5 | 12
Total | 5 | 12
Unrealized Losses |  |
Less than 12 months | 0 | 0
12 months or more | 0 | 0
Total | $ 0 | $ 0

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