v3.4.0.3
Regulatory Requirements (Capital Measures) (Details) - U.S. Basel III - USD ($)
$ in Millions
Mar. 31, 2016
Dec. 31, 2015
Advanced Approach transitional rules    
Balance    
Common Equity Tier capital, amount $ 58,514 $ 59,409
Tier 1 capital, amount 65,198 66,722
Total capital, amount 77,969 79,403
Tier 1 leverage capital, amount 0 0
Assets    
RWAs 373,925 384,162
Adjusted average total assets $ 792,268 $ 803,574
Ratio    
Common Equity Tier 1 capital, ratio 15.60% 15.50%
Tier 1 capital ratio 17.40% 17.40%
Total capital ratio 20.90% 20.70%
Minimum Regulatory Capital Ratio    
Minimum Common Equity Tier 1 capital, required 5.90% 4.50%
Minimum Tier 1 capital ratio, required 7.40% 6.00%
Minimum total capital ratio, required 9.40% 8.00%
Minimum Tier 1 leverage ratio, required 4.00% 4.00%
Standardized Approach transitional rules    
Ratio    
Tier 1 leverage ratio 8.20% 8.30%