| Document and Entity Information | Jan. 25, 2022 |
| Document And Entity Information [Line Items] | |
| Entity Registrant Name | BANK OF AMERICA CORP /DE/ |
| Amendment Flag | false |
| Entity Central Index Key | 0000070858 |
| Current Fiscal Year End Date | --12-31 |
| Document Type | 8-K |
| Document Period End Date | Jan. 25, 2022 |
| Entity Incorporation State Country Code | DE |
| Entity File Number | 1-6523 |
| Entity Tax Identification Number | 56-0906609 |
| Entity Address, Address Line One | 100 North Tryon Street |
| Entity Address, City or Town | Charlotte |
| Entity Address, State or Province | NC |
| Entity Address, Postal Zip Code | 28255 |
| City Area Code | (704) |
| Local Phone Number | 386-5681 |
| Written Communications | false |
| Soliciting Material | false |
| Pre Commencement Tender Offer | false |
| Pre Commencement Issuer Tender Offer | false |
| Entity Emerging Growth Company | false |
| Common Stock [Member] | |
| Document And Entity Information [Line Items] | |
| Security 12b Title | Common Stock, par value $0.01 per share |
| Trading Symbol | BAC |
| Security Exchange Name | NYSE |
| Series E Preferred Stock [Member] | |
| Document And Entity Information [Line Items] | |
| Security 12b Title | Depositary Shares, each representing a 1/1,000th interest in a share of Floating Rate Non-Cumulative Preferred Stock, Series E |
| Trading Symbol | BAC PrE |
| Security Exchange Name | NYSE |
| Series GG Preferred Stock [Member] | |
| Document And Entity Information [Line Items] | |
| Security 12b Title | Depositary Shares, each representing a 1/1,000th interest in a share of 6.000% Non-Cumulative Preferred Stock, Series GG |
| Trading Symbol | BAC PrB |
| Security Exchange Name | NYSE |
| Series HH Preferred Stock [Member] | |
| Document And Entity Information [Line Items] | |
| Security 12b Title | Depositary Shares, each representing a 1/1,000th interest in a share of 5.875% Non-Cumulative Preferred Stock, Series HH |
| Trading Symbol | BAC PrK |
| Security Exchange Name | NYSE |
| Series L Preferred Stock [Member] | |
| Document And Entity Information [Line Items] | |
| Security 12b Title | 7.25% Non-Cumulative Perpetual Convertible Preferred Stock, Series L |
| Trading Symbol | BAC PrL |
| Security Exchange Name | NYSE |
| Depositary Shares Each Representing A 11200th Interest In A Share Of Bank Of America Corporation Floating Rate Not Cumulative Preferred Stock Series 14 [Member] | |
| Document And Entity Information [Line Items] | |
| Security 12b Title | Depositary Shares, each representing a 1/1,200th interest in a share of Bank of America Corporation Floating Rate Non-Cumulative Preferred Stock |
| Trading Symbol | BML PrG |
| Security Exchange Name | NYSE |
| Depositary Shares Each Representing A 11200th Interest In A Share Of Bank Of America Corporation Floating Rate Not Cumulative Preferred Stock Series 21 [Member] | |
| Document And Entity Information [Line Items] | |
| Security 12b Title | Depositary Shares, each representing a 1/1,200th interest in a share of Bank of America Corporation Floating Rate Non-Cumulative Preferred Stock |
| Trading Symbol | BML PrH |
| Security Exchange Name | NYSE |
| Depositary Shares Each Representing A 11200th Interest In A Share Of Bank Of America Corporation Floating Rate Not Cumulative Preferred Stock Series 42 [Member] | |
| Document And Entity Information [Line Items] | |
| Security 12b Title | Depositary Shares, each representing a 1/1,200th interest in a share of Bank of America Corporation Floating Rate Non-Cumulative Preferred Stock |
| Trading Symbol | BML PrJ |
| Security Exchange Name | NYSE |
| Depositary Shares Each Representing A 11200th Interest In A Share Of Bank Of America Corporation Floating Rate Not Cumulative Preferred Stock Series 53 [Member] | |
| Document And Entity Information [Line Items] | |
| Security 12b Title | Depositary Shares, each representing a 1/1,200th interest in a share of Bank of America Corporation Floating Rate Non-Cumulative Preferred Stock |
| Trading Symbol | BML PrL |
| Security Exchange Name | NYSE |
| Floating Rate Preferred Hybrid Income Term Securities [Member] | |
| Document And Entity Information [Line Items] | |
| Security 12b Title | Floating Rate Preferred Hybrid Income Term Securities of BAC Capital Trust XIII (and the guarantee related thereto) |
| Trading Symbol | BAC/PF |
| Security Exchange Name | NYSE |
| A 5.63 Fixedto Floating Rate Preferred Hybrid Income Term Securities [Member] | |
| Document And Entity Information [Line Items] | |
| Security 12b Title | 5.63% Fixed to Floating Rate Preferred Hybrid Income Term Securities of BAC Capital Trust XIV (and the guarantee related thereto) |
| Trading Symbol | BAC/PG |
| Security Exchange Name | NYSE |
| Income Capital Obligation Notes [Member] | |
| Document And Entity Information [Line Items] | |
| Security 12b Title | Income Capital Obligation Notes initially due December 15, 2066 of Bank of America Corporation |
| Trading Symbol | MER PrK |
| Security Exchange Name | NYSE |
| Senior Medium Term Notes Series A Step Up Callable Notes [Member] | |
| Document And Entity Information [Line Items] | |
| Security 12b Title | Senior Medium-Term Notes, Series A, Step Up Callable Notes, due November 28, 2031 of BofA Finance LLC (and the guarantee of the Registrant with |
| Trading Symbol | BAC/31B |
| Security Exchange Name | NYSE |
| Series KK Preferred Stock [Member] | |
| Document And Entity Information [Line Items] | |
| Security 12b Title | Depositary Shares, each representing a 1/1,000th interest in a share of 5.375% Non-Cumulative Preferred Stock, Series KK |
| Trading Symbol | BAC PrM |
| Security Exchange Name | NYSE |
| Series LL Preferred Stock [Member] | |
| Document And Entity Information [Line Items] | |
| Security 12b Title | Depositary Shares, each representing a 1/1,000th interest in a share of 5.000% Non-Cumulative Preferred Stock, Series LL |
| Trading Symbol | BAC PrN |
| Security Exchange Name | NYSE |
| Depositary Shares Each Representing A 11000th Interest In A Share Of 4.375 Not Cumulative Preferred Stock Series Nn 7 [Member] | |
| Document And Entity Information [Line Items] | |
| Security 12b Title | Depositary Shares, each representing a 1/1,000th interest in a share of 4.375% Non-Cumulative Preferred Stock, Series NN |
| Trading Symbol | BAC PrO |
| Security Exchange Name | NYSE |
| Depositary Shares Each Representing A 11000th Interest In A Share Of 4.125 Not Cumulative Preferred Stock Series Pp 5 [Member] | |
| Document And Entity Information [Line Items] | |
| Security 12b Title | Depositary Shares, each representing a 1/1,000th interest in a share of 4.125% Non-Cumulative Preferred Stock, Series PP |
| Trading Symbol | BAC PrP |
| Security Exchange Name | NYSE |
| Depositary Shares Each Representing A 11000th Interest In A Share Of 4.250 Not Cumulative Preferred Stock Series Qq 6 [Member] | |
| Document And Entity Information [Line Items] | |
| Security 12b Title | Depositary Shares, each representing a 1/1,000th interest in a share of 4.250% Non-Cumulative Preferred Stock, Series QQ |
| Trading Symbol | BAC PrQ |
| Security Exchange Name | NYSE |
