Annual report pursuant to Section 13 and 15(d)

Regulatory Requirements and Restrictions (Details)

v3.8.0.1
Regulatory Requirements and Restrictions (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Leverage-based Capital Metrics [Abstract]    
Transition capital conservation buffer 1.25% 0.625%
G-SIB Surcharge 1.50% 0.75%
Countercyclical capital buffer 0.00% 0.00%
Bank of America Corporation    
Risk-based capital metrics:    
Common equity tier 1 capital ratio, regulatory minimum 7.25% 5.875%
Tier 1 capital ratio, regulatory minimum 8.75% 7.375%
Total capital ratio, regulatory minimum 10.75% 9.375%
Leverage-based Capital Metrics [Abstract]    
Tier 1 leverage ratio, regulatory minimum 4.00% 4.00%
Bank of America, N.A. | Subsidiaries    
Risk-based capital metrics:    
Common equity tier 1 capital ratio, regulatory minimum 6.50% 6.50%
Tier 1 capital ratio, regulatory minimum 8.00% 8.00%
Total capital ratio, regulatory minimum 10.00% 10.00%
Leverage-based Capital Metrics [Abstract]    
Tier 1 leverage ratio, regulatory minimum 5.00% 5.00%
Standardized Approach | Bank of America Corporation    
Risk-based capital metrics:    
Common equity tier 1 capital $ 171,063 $ 168,866
Tier 1 capital 191,496 190,315
Total capital 227,427 228,187
Risk-weighted assets (in billions) $ 1,434,000 $ 1,399,000
Common equity tier 1 capital ratio 11.90% 12.10%
Tier 1 capital ratio 13.40% 13.60%
Total capital ratio 15.90% 16.30%
Leverage-based Capital Metrics [Abstract]    
Adjusted quarterly average assets (in billions) $ 2,224,000 $ 2,131,000
Tier 1 leverage ratio 8.60% 8.90%
Standardized Approach | Bank of America, N.A. | Subsidiaries    
Risk-based capital metrics:    
Common equity tier 1 capital $ 150,552 $ 149,755
Tier 1 capital 150,552 149,755
Total capital 163,243 163,471
Risk-weighted assets (in billions) $ 1,201,000 $ 1,176,000
Common equity tier 1 capital ratio 12.50% 12.70%
Tier 1 capital ratio 12.50% 12.70%
Total capital ratio 13.60% 13.90%
Leverage-based Capital Metrics [Abstract]    
Adjusted quarterly average assets (in billions) $ 1,672,000 $ 1,611,000
Tier 1 leverage ratio 9.00% 9.30%
Advanced Approaches | Bank of America Corporation    
Risk-based capital metrics:    
Common equity tier 1 capital $ 171,063 $ 168,866
Tier 1 capital 191,496 190,315
Total capital 218,529 218,981
Risk-weighted assets (in billions) $ 1,449,000 $ 1,530,000
Common equity tier 1 capital ratio 11.80% 11.00%
Tier 1 capital ratio 13.20% 12.40%
Total capital ratio 15.10% 14.30%
Leverage-based Capital Metrics [Abstract]    
Adjusted quarterly average assets (in billions) $ 2,224,000 $ 2,131,000
Tier 1 leverage ratio 8.60% 8.90%
Advanced Approaches | Bank of America, N.A. | Subsidiaries    
Risk-based capital metrics:    
Common equity tier 1 capital $ 150,552 $ 149,755
Tier 1 capital 150,552 149,755
Total capital 154,675 154,697
Risk-weighted assets (in billions) $ 1,007,000 $ 1,045,000
Common equity tier 1 capital ratio 14.90% 14.30%
Tier 1 capital ratio 14.90% 14.30%
Total capital ratio 15.40% 14.80%
Leverage-based Capital Metrics [Abstract]    
Adjusted quarterly average assets (in billions) $ 1,672,000 $ 1,611,000
Tier 1 leverage ratio 9.00% 9.30%