SCHEDULE I - CONDENSED FINANCIAL INFORMATION OF REGISTRANT (Parent Company Only) - Balance Sheet - Additional Information (Details) - USD ($) $ / shares in Units, $ in Millions |
Dec. 31, 2025 |
Dec. 31, 2024 |
|---|---|---|
| Condensed Balance Sheet Statements, Captions [Line Items] | ||
| Accumulated depreciation | $ 2,000 | $ 2,000 |
| Common shares, par value (in dollars per share) | $ 0.01 | $ 0.01 |
| Common shares, shares authorized (in shares) | 1,250,000,000 | 1,250,000,000 |
| Common shares, shares issued (in shares) | 338,058,287 | 337,729,050 |
| Treasury shares (in shares) | 246,794,407 | 241,562,357 |
| Ameriprise Financial, Inc. | ||
| Condensed Balance Sheet Statements, Captions [Line Items] | ||
| Accumulated depreciation | $ 707 | $ 779 |
| Common shares, par value (in dollars per share) | $ 0.01 | $ 0.01 |
| Common shares, shares authorized (in shares) | 1,250,000,000 | 1,250,000,000 |
| Common shares, shares issued (in shares) | 338,058,287 | 337,729,050 |
| Treasury shares (in shares) | 246,794,407 | 241,562,357 |