Quarterly report pursuant to Section 13 or 15(d)

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

v2.4.0.8
Securities - Amortized Cost, Gains and Losses, and Fair Value (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended
Mar. 31, 2014
Mar. 31, 2013
Dec. 31, 2013
Dec. 31, 2012
Other Debt Securities, Carried at Fair Value:        
Amortized Cost $ 36,453   $ 34,145  
Gross Unrealized Gains 82   34  
Gross Unrealized Losses (940)   (1,335)  
Other Debt Securities Carried at Fair Value 35,595   32,844  
Debt Securities Carried at Fair Value:        
Amortized Cost 289,615   275,290  
Gross Unrealized Gains 1,602   1,391  
Gross Unrealized Losses (5,641)   (7,886)  
Debt Securities Carried at Fair Value 285,576   268,795  
Held-to-maturity Securities:        
Amortized Cost 55,120 [1]   55,150  
Gross Unrealized Gains 50   20  
Gross Unrealized Losses (2,064)   (2,740)  
Held-to-maturity, at cost, fair value 53,106 [1]   52,430  
Debt securities:        
Amortized Cost 344,735   330,440  
Gross Unrealized Gains 1,652   1,411  
Gross Unrealized Losses (7,705)   (10,626)  
Debt Securities, Fair Value 338,682   321,225  
In Text Details [Abstract]        
Accumulated other comprehensive income (loss) (7,037) (3,488) (8,457) (2,797)
Related Income Tax Benefit (1,200)      
Nonperforming Debt Securities 100   103  
Unrealized Mark-to-Market Net Losses in other income (loss) 444 (159)    
Realized Gains (Losses) on Other Debt Securities (17) 2    
US Government Corporations and Agencies Securities [Member]
       
Available-for-sale Debt Securities:        
Amortized Cost 29,580   8,910  
Gross Unrealized Gains 108   106  
Gross Unrealized Losses (121)   (62)  
Debt securities carried at fair value 29,567   8,954  
Other Debt Securities, Carried at Fair Value:        
Other Debt Securities Carried at Fair Value 4,182   4,062  
Debt Securities Carried at Fair Value:        
Debt Securities Carried at Fair Value 33,749      
Agency MBS [Member]
       
Available-for-sale Debt Securities:        
Amortized Cost 169,216   170,112  
Gross Unrealized Gains 830   777  
Gross Unrealized Losses (4,299)   (5,954)  
Debt securities carried at fair value 165,747   164,935  
Other Debt Securities, Carried at Fair Value:        
Other Debt Securities Carried at Fair Value 16,290   16,500  
Debt Securities Carried at Fair Value:        
Debt Securities Carried at Fair Value 182,037      
Collateralized Mortgage Obligations [Member]
       
Available-for-sale Debt Securities:        
Amortized Cost 18,464   22,731  
Gross Unrealized Gains 217   76  
Gross Unrealized Losses (109)   (315)  
Debt securities carried at fair value 18,572   22,492  
Other Debt Securities, Carried at Fair Value:        
Other Debt Securities Carried at Fair Value 123   218  
Debt Securities Carried at Fair Value:        
Debt Securities Carried at Fair Value 18,695      
Residential Mortgage Backed Securities [Member]
       
Available-for-sale Debt Securities:        
Amortized Cost 5,111 [2]   6,124 [2]  
Gross Unrealized Gains 244 [2]   238 [2]  
Gross Unrealized Losses (97) [2]   (123) [2]  
Debt securities carried at fair value 5,258 [2]   6,239 [2]  
Debt Securities Carried at Fair Value:        
Debt Securities Carried at Fair Value 5,258      
Residential Mortgage Backed Securities [Member] | Prime Loan [Member]
       
Table Details [Abstract]        
Available-for-sale Securities, Debt Maturities, Percent Held by Rating 88.00%   89.00%  
Residential Mortgage Backed Securities [Member] | Alt-A Loan [Member]
       
Table Details [Abstract]        
Available-for-sale Securities, Debt Maturities, Percent Held by Rating 7.00%   7.00%  
Residential Mortgage Backed Securities [Member] | Subprime Loan [Member]
       
Table Details [Abstract]        
Available-for-sale Securities, Debt Maturities, Percent Held by Rating 5.00%   4.00%  
Commercial Mortgage Backed Securities [Member]
       
Available-for-sale Debt Securities:        
Amortized Cost 1,713   2,429  
Gross Unrealized Gains 26   63  
Gross Unrealized Losses (5)   (12)  
Debt securities carried at fair value 1,734   2,480  
Other Debt Securities, Carried at Fair Value:        
Other Debt Securities Carried at Fair Value 770   749  
Debt Securities Carried at Fair Value:        
Debt Securities Carried at Fair Value 2,504      
Foreign Securities [Member]
       
Available-for-sale Debt Securities:        
Amortized Cost 7,109   7,207  
Gross Unrealized Gains 31   37  
Gross Unrealized Losses (18)   (24)  
Debt securities carried at fair value 7,122   7,220  
Other Debt Securities, Carried at Fair Value:        
Other Debt Securities Carried at Fair Value 14,230 [3]   11,315 [3]  
Debt Securities Carried at Fair Value:        
Debt Securities Carried at Fair Value 21,352      
Corporate Bond Securities [Member]
       
Available-for-sale Debt Securities:        
Amortized Cost 831   860  
Gross Unrealized Gains 18   20  
Gross Unrealized Losses (4)   (7)  
Debt securities carried at fair value 845   873  
Debt Securities Carried at Fair Value:        
Debt Securities Carried at Fair Value 845      
Other Debt Obligations [Member]
       
Available-for-sale Debt Securities:        
Amortized Cost 14,695   16,805  
Gross Unrealized Gains 42   30  
Gross Unrealized Losses (15)   (5)  
Debt securities carried at fair value 14,722   16,830  
Debt Securities Carried at Fair Value:        
Debt Securities Carried at Fair Value 14,722      
Taxable Securities [Member]
       
Available-for-sale Debt Securities:        
Amortized Cost 246,719   235,178  
Gross Unrealized Gains 1,516   1,347  
Gross Unrealized Losses (4,668)   (6,502)  
Debt securities carried at fair value 243,567   230,023  
Debt Securities Carried at Fair Value:        
Debt Securities Carried at Fair Value 279,162      
Tax-exempt securities [Member]
       
Available-for-sale Debt Securities:        
Amortized Cost 6,443   5,967  
Gross Unrealized Gains 4   10  
Gross Unrealized Losses (33)   (49)  
Debt securities carried at fair value 6,414   5,928  
Debt Securities Carried at Fair Value:        
Debt Securities Carried at Fair Value 6,414      
Debt [Member]
       
Available-for-sale Debt Securities:        
Amortized Cost 253,162   241,145  
Gross Unrealized Gains 1,520   1,357  
Gross Unrealized Losses (4,701)   (6,551)  
Debt securities carried at fair value 249,981   235,951  
In Text Details [Abstract]        
Related Income Tax Benefit 859 (535)    
Debt [Member] | Available-for-sale debt securities [Member]
       
In Text Details [Abstract]        
Accumulated other comprehensive income (loss) (1,960) 3,497 (3,257) 4,443
Equity securities [Member]
       
Available-for-sale Equity Securities:        
Amortized Cost 236 [4]   230 [4]  
Gross Unrealized Gains 0 [4]   0 [4]  
Gross Unrealized Losses (20) [4]   (7) [4]  
Fair Value $ 216 [4]   $ 223 [4]  
[1] Substantially all U.S. agency MBS.
[2] At March 31, 2014 and December 31, 2013, the underlying collateral type included approximately 88 percent and 89 percent prime, seven percent and seven percent Alt-A, and five percent and four percent subprime.
[3] These securities are primarily used to satisfy certain international regulatory liquidity requirements.
[4] Classified in other assets on the Consolidated Balance Sheet.