Quarterly report pursuant to Section 13 or 15(d)

Allowance for Credit Losses - Allowance and Carrying Value by Portfolio Segment (Details)

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Allowance for Credit Losses - Allowance and Carrying Value by Portfolio Segment (Details) - USD ($)
$ in Millions
Jun. 30, 2016
Mar. 31, 2016
Dec. 31, 2015
Jun. 30, 2015
Mar. 31, 2015
Dec. 31, 2014
Impaired loans and troubled debt restructurings            
Allowance for loan and lease losses $ 869   $ 1,101      
Carrying value $ 21,616   $ 24,205      
Allowance as a percentage of carrying value 4.02%   4.55%      
Loans collectively evaluated for impairment            
Allowance for loan and lease losses $ 10,440   $ 10,329      
Carrying value $ 857,649   $ 849,155      
Allowance as a percentage of carrying value 1.22%   1.22%      
Purchased credit-impaired loans            
Valuation allowance $ 12,587     $ 13,656    
Valuation allowance as a percentage of carrying value 3.47%   4.82%      
Total            
Allowance for loan and lease losses $ 11,837 $ 12,069 $ 12,234 13,068 $ 13,676 $ 14,419
Carrying value $ 894,493   $ 890,045      
Allowance as a percentage of carrying value 1.32%   1.37%      
Loans and leases, measured at fair value $ 8,660   $ 6,938      
Small Business Commercial Loan | United States            
Total            
Allowance for loan and lease losses 29   35      
Purchased Credit - impaired            
Purchased credit-impaired loans            
Valuation allowance 528   804      
Carrying value gross of valuation allowance 15,228   16,685      
Consumer Real Estate            
Impaired loans and troubled debt restructurings            
Allowance for loan and lease losses 442   634      
Carrying value $ 17,842   $ 21,058      
Allowance as a percentage of carrying value 2.48%   3.01%      
Loans collectively evaluated for impairment            
Allowance for loan and lease losses $ 2,239   $ 2,476      
Carrying value $ 224,460   $ 226,116      
Allowance as a percentage of carrying value 1.00%   1.10%      
Purchased credit-impaired loans            
Valuation allowance $ 3,209     4,741    
Valuation allowance as a percentage of carrying value 3.47%   4.82%      
Total            
Allowance for loan and lease losses $ 3,209 3,456 $ 3,914 4,741 5,250 5,935
Carrying value $ 257,530   $ 263,859      
Allowance as a percentage of carrying value 1.25%   1.48%      
Loans and leases, measured at fair value $ 1,800   $ 1,900      
Consumer Real Estate | Purchased Credit - impaired            
Purchased credit-impaired loans            
Valuation allowance 528   804      
Carrying value gross of valuation allowance 15,228   16,685      
Credit Card and Other Consumer            
Impaired loans and troubled debt restructurings            
Allowance for loan and lease losses 189   250      
Carrying value $ 672   $ 779      
Allowance as a percentage of carrying value 28.13%   32.09%      
Loans collectively evaluated for impairment            
Allowance for loan and lease losses $ 3,145   $ 3,221      
Carrying value $ 191,841   $ 189,660      
Allowance as a percentage of carrying value 1.64%   1.70%      
Purchased credit-impaired loans            
Valuation allowance $ 3,334     3,702    
Total            
Allowance for loan and lease losses 3,334 3,302 $ 3,471 3,702 3,929 4,047
Carrying value $ 192,513   $ 190,439      
Allowance as a percentage of carrying value 1.73%   1.82%      
Commercial            
Impaired loans and troubled debt restructurings            
Allowance for loan and lease losses $ 238   $ 217      
Carrying value $ 3,102   $ 2,368      
Allowance as a percentage of carrying value 7.67%   9.16%      
Loans collectively evaluated for impairment            
Allowance for loan and lease losses $ 5,056   $ 4,632      
Carrying value $ 441,348   $ 433,379      
Allowance as a percentage of carrying value 1.15%   1.07%      
Purchased credit-impaired loans            
Valuation allowance $ 6,044     5,213    
Total            
Allowance for loan and lease losses 5,294 $ 5,311 $ 4,849 $ 4,625 $ 4,497 $ 4,437
Carrying value $ 444,450   $ 435,747      
Allowance as a percentage of carrying value 1.19%   1.11%      
Loans and leases, measured at fair value $ 6,816   $ 5,067      
Commercial | United States            
Total            
Loans and leases, measured at fair value $ 2,700   $ 2,300