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Regulatory Requirements - Bank Regulatory Capital (Details) - Subsidiaries - Ameriprise Bank - USD ($) $ in Millions | Dec. 31, 2024 | Dec. 31, 2023
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Regulatory capital |  |
Common equity Tier 1 capital, Actual Amount | $ 1,763 | $ 1,715
Tier 1 capital, Actual Amount | 1,763 | 1,715
Total capital, Actual Amount | 1,772 | 1,724
Tier 1 leverage, Actual Amount | $ 1,763 | $ 1,715
Common equity Tier 1 capital, Actual Ratio (as a percent) | 33.88% | 31.72%
Tier 1 capital, Actual Ratio (as a percent) | 33.88% | 31.72%
Total capital, Actual Ratio (as a percent) | 34.06% | 31.89%
Tier 1 leverage, Actual Ratio (as a percent) | 7.35% | 7.44%
Common equity Tier 1, Requirement for capital adequacy, Amount | $ 234 | $ 243
Tier 1 capital, Requirement for capital adequacy, Amount | 312 | 324
Total capital, Requirement for capital adequacy, Amount | 416 | 433
Tier 1 leverage, Requirement for capital adequacy, Amount | $ 959 | $ 922
Common equity Tier 1 capital, Requirement for capital adequacy, Ratio (as a percent) | 4.50% | 4.50%
Tier 1 capital, Requirement for capital adequacy, Ratio (as a percent) | 6.00% | 6.00%
Total capital, Requirement for capital adequacy, Ratio (as a percent) | 8.00% | 8.00%
Tier 1 leverage, Requirement for capital adequacy, Ratio (as a percent) | 4.00% | 4.00%
Common equity Tier 1 capital, To be well capitalized, Amount | $ 338 | $ 351
Tier 1 capital, To be well capitalized, Amount | 416 | 433
Total capital, To be well capitalized, Amount | 520 | 541
Tier 1 leverage, To be well capitalized, Amount | $ 1,199 | $ 1,153
Common equity Tier 1 capital, To be well capitalized, Ratio (as a percent) | 6.50% | 6.50%
Tier 1 capital, To be well capitalized, Ratio (as a percent) | 8.00% | 8.00%
Total capital, To be well capitalized, Ratio (as a percent) | 10.00% | 10.00%
Tier 1 leverage, To be well capitalized, Ratio (as a percent) | 5.00% | 5.00%

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