| Document and Entity Information | Dec. 27, 2019 |
| Document And Entity Information [Line Items] | |
| Entity Registrant Name | BANK OF AMERICA CORP /DE/ |
| Current Fiscal Year End Date | --12-31 |
| Amendment Flag | false |
| Entity Central Index Key | 0000070858 |
| Document Type | 8-K |
| Document Period End Date | Dec. 27, 2019 |
| Entity Incorporation, State or 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, par value $0.01 per share [Member] | |
| Document And Entity Information [Line Items] | |
| Title of 12(b) Security | Common Stock, par value $0.01 per share |
| Trading Symbol | BAC |
| Security Exchange Name | NYSE |
| Depositary Shares, each representing a 1/1,000th interest in a share of Floating Rate Non-Cumulative Preferred Stock, Series E [Member] | |
| Document And Entity Information [Line Items] | |
| Title of 12(b) Security | 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 |
| Depositary Shares, each representing a 1/1,000th interest in a share of 6.500% Non-Cumulative Preferred Stock, Series Y [Member] | |
| Document And Entity Information [Line Items] | |
| Title of 12(b) Security | Depositary Shares, each representing a 1/1,000th interest in a share of 6.500% Non-Cumulative Preferred Stock, Series Y |
| Trading Symbol | BAC PrY |
| Security Exchange Name | NYSE |
| Depositary Shares, each representing a 1/1,000th interest in a share of 6.200% Non-Cumulative Preferred Stock, Series CC [Member] | |
| Document And Entity Information [Line Items] | |
| Title of 12(b) Security | Depositary Shares, each representing a 1/1,000th interest in a share of 6.200% Non-Cumulative Preferred Stock, Series CC |
| Trading Symbol | BAC PrC |
| Security Exchange Name | NYSE |
| Depositary Shares, each representing a 1/1,000th interest in a share of 6.000% Non-Cumulative Preferred Stock, Series EE [Member] | |
| Document And Entity Information [Line Items] | |
| Title of 12(b) Security | Depositary Shares, each representing a 1/1,000th interest in a share of 6.000% Non-Cumulative Preferred Stock, Series EE |
| Trading Symbol | BAC PrA |
| Security Exchange Name | NYSE |
| Depositary Shares, each representing a 1/1,000th interest in a share of 6.000% Non-Cumulative Preferred Stock, Series GG [Member] | |
| Document And Entity Information [Line Items] | |
| Title of 12(b) Security | 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 |
| Depositary Shares, each representing a 1/1,000th interest in a share of 5.875% Non-Cumulative Preferred Stock, Series HH [Member] | |
| Document And Entity Information [Line Items] | |
| Title of 12(b) Security | 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 |
| 7.25% Non-Cumulative Perpetual Convertible Preferred Stock, Series L [Member] | |
| Document And Entity Information [Line Items] | |
| Title of 12(b) Security | 7.25% Non-Cumulative Perpetual Convertible Preferred Stock, Series L |
| Trading Symbol | BAC PrL |
| Security Exchange Name | NYSE |
| Depositary Shares, each representing a 1/1,200th interest in a share of Bank of America Corporation Floating Rate Non-Cumulative Preferred Stock, Series 1 [Member] | |
| Document And Entity Information [Line Items] | |
| Title of 12(b) Security | 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 1/1,200th interest in a share of Bank of America Corporation Floating Rate Non-Cumulative Preferred Stock, Series 2 [Member] | |
| Document And Entity Information [Line Items] | |
| Title of 12(b) Security | 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 1/1,200th interest in a share of Bank of America Corporation Floating Rate Non-Cumulative Preferred Stock, Series 4 [Member] | |
| Document And Entity Information [Line Items] | |
| Title of 12(b) Security | 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 1/1,200th interest in a share of Bank of America Corporation Floating Rate Non-Cumulative Preferred Stock, Series 5 [Member] | |
| Document And Entity Information [Line Items] | |
| Title of 12(b) Security | 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 of BAC Capital Trust XIII (and the guarantee related thereto) [Member] | |
| Document And Entity Information [Line Items] | |
| Title of 12(b) Security | 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 |
| 5.63% Fixed to Floating Rate Preferred Hybrid Income Term Securities of BAC Capital Trust XIV (and the guarantee related thereto) [Member] | |
| Document And Entity Information [Line Items] | |
| Title of 12(b) Security | 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 initially due December 15, 2066 of Bank of America Corporation [Member] | |
| Document And Entity Information [Line Items] | |
| Title of 12(b) Security | 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, due November 28, 2031 of BofA Finance LLC (and the guarantee of the Registrant with respect thereto) [Member] | |
| Document And Entity Information [Line Items] | |
| Title of 12(b) Security | Senior Medium-Term Notes, Series A, Step Up Callable Notes, due November 28, 2031 of BofA Finance LLC |
| Trading Symbol | BAC/31B |
| Security Exchange Name | NYSE |
| Depositary Shares, each representing a 1/1,000th interest in a share of 5.375% Non-Cumulative Preferred Stock, Series KK [Member] | |
| Document And Entity Information [Line Items] | |
| Title of 12(b) Security | 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 |
| Depositary Shares, each representing a 1/1,000th interest in a share of 5.000% Non-Cumulative Preferred Stock, Series LL [Member] | |
| Document And Entity Information [Line Items] | |
| Title of 12(b) Security | 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 |
