Quarterly report pursuant to Section 13 or 15(d)

Securities - Amortized Cost, Gains and Losses, and Fair Value Available-for-sale (Details)

v3.2.0.727
Securities - Amortized Cost, Gains and Losses, and Fair Value Available-for-sale (Details) - USD ($)
$ in Millions
Jun. 30, 2015
Dec. 31, 2014
Jun. 30, 2014
Dec. 31, 2013
Available-for-sale debt securities        
Amortized Cost $ 295,988 $ 282,108    
Gross Unrealized Gains 2,250 3,001    
Gross Unrealized Losses (2,101) (835)    
Fair Value 296,137 284,274    
Available-for-sale marketable equity securities        
Net unrealized gain on AFS debt securities in AOCI 251,659 243,471 $ 237,411 $ 232,685
Other debt securities carried at fair value        
Amortized Cost 36,452 36,524    
Gross Unrealized Gains 164 261    
Gross Unrealized Losses (446) (364)    
Fair Value 36,170 36,421    
Total debt securities carried at fair value        
Amortized Cost 332,440 318,632    
Gross Unrealized Gains 2,414 3,262    
Gross Unrealized Losses (2,547) (1,199)    
Debt securities carried at fair value 332,307 320,695    
Held-to-maturity debt securities, substantially all U.S. agency mortgage-backed securities        
Amortized Cost 60,072 59,766    
Gross Unrealized Gains 160 486    
Gross Unrealized Losses (1,069) (611)    
Held-to-maturity, fair value 59,163 59,641    
Total debt securities        
Amortized Cost 392,512 378,398    
Gross Unrealized Gains 2,574 3,748    
Gross Unrealized Losses (3,616) (1,810)    
Fair Value 391,470 380,336    
Other assets        
Available-for-sale marketable equity securities        
Amortized Cost 336 336    
Gross Unrealized Gains 104 27    
Gross Unrealized Losses 0 0    
Fair Value 440 363    
Nonperforming Financing Receivable        
Available-for-sale debt securities        
Fair Value 182 161    
U.S. Treasury and agency securities        
Available-for-sale debt securities        
Amortized Cost 57,699 69,267    
Gross Unrealized Gains 661 360    
Gross Unrealized Losses (16) (32)    
Fair Value 58,344 69,595    
Total debt securities carried at fair value        
Debt securities carried at fair value 58,344      
Agency        
Available-for-sale debt securities        
Amortized Cost 189,228 163,592    
Gross Unrealized Gains 931 2,040    
Gross Unrealized Losses (1,899) (593)    
Fair Value 188,260 165,039    
Total debt securities carried at fair value        
Debt securities carried at fair value 203,145      
Agency-collateralized mortgage obligations        
Available-for-sale debt securities        
Amortized Cost 12,749 14,175    
Gross Unrealized Gains 224 152    
Gross Unrealized Losses (42) (79)    
Fair Value 12,931 14,248    
Other debt securities carried at fair value        
Fair Value 9 0    
Total debt securities carried at fair value        
Debt securities carried at fair value 12,940      
Non-agency residential        
Available-for-sale debt securities        
Amortized Cost 3,649 4,244    
Gross Unrealized Gains 299 287    
Gross Unrealized Losses (62) (77)    
Fair Value 3,886 $ 4,454    
Total debt securities carried at fair value        
Debt securities carried at fair value $ 7,673      
Non-agency residential | Prime        
Available-for-sale marketable equity securities        
Available-for-sale securities, percent held by rating 74.00% 76.00%    
Non-agency residential | Alt-A Loan        
Available-for-sale marketable equity securities        
Available-for-sale securities, percent held by rating 14.00% 14.00%    
Non-agency residential | Subprime        
Available-for-sale marketable equity securities        
Available-for-sale securities, percent held by rating 12.00% 10.00%    
Commercial        
Available-for-sale debt securities        
Amortized Cost $ 5,087 $ 3,931    
Gross Unrealized Gains 54 69    
Gross Unrealized Losses (31)      
Fair Value 5,110 4,000    
Total debt securities carried at fair value        
Debt securities carried at fair value 5,110      
Non-U.S. securities        
Available-for-sale debt securities        
Amortized Cost 6,124 6,208    
Gross Unrealized Gains 25 33    
Gross Unrealized Losses (4) (11)    
Fair Value 6,145 6,230    
Total debt securities carried at fair value        
Debt securities carried at fair value 23,343      
Corporate/Agency bonds        
Available-for-sale debt securities        
Amortized Cost 252 361    
Gross Unrealized Gains 6 9    
Gross Unrealized Losses (1) (2)    
Fair Value 257 368    
Total debt securities carried at fair value        
Debt securities carried at fair value 257      
Other taxable securities, substantially all asset-backed securities        
Available-for-sale debt securities        
Amortized Cost 10,389 10,774    
Gross Unrealized Gains 35 39    
Gross Unrealized Losses (21) (22)    
Fair Value 10,403 10,791    
Total debt securities carried at fair value        
Debt securities carried at fair value 10,694      
Total taxable securities        
Available-for-sale debt securities        
Amortized Cost 285,177 272,552    
Gross Unrealized Gains 2,235 2,989    
Gross Unrealized Losses (2,076) (816)    
Fair Value 285,336 274,725    
Total debt securities carried at fair value        
Debt securities carried at fair value 321,506      
Tax-exempt securities        
Available-for-sale debt securities        
Amortized Cost 10,811 9,556    
Gross Unrealized Gains 15 12    
Gross Unrealized Losses (25) (19)    
Fair Value 10,801 9,549    
Total debt securities carried at fair value        
Debt securities carried at fair value 10,801      
Debt securities        
Available-for-sale marketable equity securities        
Accumulated other comprehensive income tax expense 55      
Total debt securities carried at fair value        
Debt securities carried at fair value 332,307      
Debt securities | Available-for-sale debt securities        
Available-for-sale marketable equity securities        
Net unrealized gain on AFS debt securities in AOCI $ 94 $ 1,343 $ 355 $ (3,257)