Regulatory Requirements and Restrictions - Narrative (Details) - USD ($) $ in Billions |
12 Months Ended | |
|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
|
| Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] | ||
| Cash segregated under other regulations | $ 4.4 | $ 4.0 |
| Securities segregated under other regulations | 13.2 | 18.3 |
| Deposits with clearing organizations | $ 28.3 | $ 21.5 |
| Bank of America, N.A. and subsidiaries | ||
| Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] | ||
| Preceding period of net profits for dividends | 2 years | |
| Cash dividends allowable to be declared and paid by consolidated subsidiaries to the parent company | $ 6.3 | |
| Bank of America, N.A. and subsidiaries | ||
| Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] | ||
| Proceeds from dividends received | 33.6 | |
| Subsidiaries, Bank of America California, N.A. | ||
| Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] | ||
| Proceeds from dividends received | $ 0.0 |