Financing Receivables - Allowance for Credit Losses (Details) - USD ($) $ in Millions |
6 Months Ended | ||
|---|---|---|---|
Jun. 30, 2026 |
Jun. 30, 2025 |
Dec. 31, 2025 |
|
| Rollforward of allowance for credit losses | |||
| Beginning balance | $ 52 | $ 54 | |
| Provisions | 7 | (5) | |
| Charge-offs | (2) | (2) | |
| Ending balance | 57 | 47 | |
| Commercial Loans | |||
| Rollforward of allowance for credit losses | |||
| Beginning balance | 41 | 45 | |
| Provisions | 5 | (8) | |
| Charge-offs | (1) | 0 | |
| Ending balance | 45 | 37 | |
| Commercial Loans | Balance Sheet Location [Axis]: amp:Receivables | |||
| Financing receivables | |||
| Accrued interest on loans | 23 | $ 22 | |
| Consumer Loans | |||
| Rollforward of allowance for credit losses | |||
| Beginning balance | 11 | 9 | |
| Provisions | 2 | 3 | |
| Charge-offs | (1) | (2) | |
| Ending balance | $ 12 | $ 10 | |