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Regulatory Requirements and Restrictions (Tables)
 12 Months Ended
Dec. 31, 2021
Banking and Thrift, Interest [Abstract]  
Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations The table below presents capital ratios and related information in accordance with Basel 3 Standardized and Advanced approaches as measured at December 31, 2021 and 2020 for the Corporation and BANA.
Regulatory Capital under Basel 3
Bank of America CorporationBank of America, N.A.
Standardized Approach (1)
Advanced Approaches (1)
Regulatory Minimum (2)
Standardized Approach (1)
Advanced Approaches (1)
Regulatory Minimum (3)
(Dollars in millions, except as noted)December 31, 2021
Risk-based capital metrics:  
Common equity tier 1 capital$171,759 $171,759 $182,526 $182,526 
Tier 1 capital196,465 196,465 182,526 182,526 
Total capital (4)
227,592 220,616 194,773 188,091 
Risk-weighted assets (in billions)1,618 1,399 1,352 1,048 
Common equity tier 1 capital ratio10.6 %12.3 %9.5 %13.5 %17.4 %7.0 %
Tier 1 capital ratio12.1 14.0 11.0 13.5 17.4 8.5 
Total capital ratio14.1 15.8 13.0 14.4 17.9 10.5 
Leverage-based metrics:
Adjusted quarterly average assets (in billions) (5)
$3,087 $3,087 $2,414 $2,414 
Tier 1 leverage ratio6.4 %6.4 %4.0 7.6 %7.6 %5.0 
Supplementary leverage exposure (in billions) (6)
$3,604 $2,824 
Supplementary leverage ratio5.5 %5.0 6.5 %6.0 
 December 31, 2020
Risk-based capital metrics:    
Common equity tier 1 capital$176,660 $176,660 $164,593 $164,593 
Tier 1 capital200,096 200,096 164,593 164,593 
Total capital (4)
237,936 227,685 181,370 170,922 
Risk-weighted assets (in billions)1,480 1,371 1,221 1,014 
Common equity tier 1 capital ratio11.9 %12.9 %9.5 %13.5 %16.2 %7.0 %
Tier 1 capital ratio13.5 14.6 11.0 13.5 16.2 8.5 
Total capital ratio16.1 16.6 13.0 14.9 16.9 10.5 
Leverage-based metrics:
Adjusted quarterly average assets (in billions) (5)
$2,719 $2,719 $2,143 $2,143 
Tier 1 leverage ratio7.4 %7.4 %4.0 7.7 %7.7 %5.0 
Supplementary leverage exposure (in billions) (6)
$2,786 $2,525 
Supplementary leverage ratio7.2 %5.0 6.5 %6.0 
(1)As of December 31, 2021 and 2020, capital ratios are calculated using the regulatory capital rule that allows a five-year transition period related to the adoption of the CECL accounting standard.
(2)The capital conservation buffer and global systemically important bank (G-SIB) surcharge were 2.5 percent at both December 31, 2021 and 2020. At December 31, 2021 and 2020 the Corporation's stress capital buffer of 2.5 percent was applied in place of the capital conservation buffer under the Standardized approach. The countercyclical capital buffer for both periods was zero. The CET1 capital regulatory minimum is the sum of the CET1 capital ratio minimum of 4.5 percent, the Corporation’s G-SIB surcharge of 2.5 percent and the Corporation’s SCB or the capital conservation buffer, as applicable, of 2.5 percent. The SLR regulatory minimum includes a leverage buffer of 2.0 percent.
(3)Risk-based capital regulatory minimums at December 31, 2021 and 2020 are the minimum ratios under Basel 3, including a capital conservation buffer of 2.5 percent. The regulatory minimums for the leverage ratios as of both period ends are the percent required to be considered well capitalized under the PCA framework.
(4)Total capital under the Advanced approaches differs from the Standardized approach due to differences in the amount permitted in Tier 2 capital related to the qualifying allowance for credit losses.
(5)Reflects total average assets adjusted for certain Tier 1 capital deductions.
(6)Supplementary leverage exposure for the Corporation at December 31, 2020 reflects the temporary exclusion of U.S. Treasury securities and deposits at Federal Reserve Banks. The temporary relief expired after March 31, 2021 and is not reflected in supplementary leverage exposure at December 31, 2021.