Quarterly report pursuant to Section 13 or 15(d)

Securities - Expected Maturity (Details)

v2.4.0.8
Securities - Expected Maturity (Details) (USD $)
In Millions, unless otherwise specified
Jun. 30, 2014
Dec. 31, 2013
Held-to-maturity Securities, Debt Maturities, Net Carrying Amount [Abstract]    
Due in One Year or Less, Amount $ 108 [1]  
Due in One Year or Less, Yield 1.07% [1],[2]  
Due after One Year through Five Years, Amount 19 [1]  
Due after One Year through Five Years, Yield 3.65% [1],[2]  
Due after Five Years through Ten Years, Amount 59,495 [1]  
Due after Five Years though Ten Years, Yield 2.59% [1],[2]  
Due after Ten Years, Amount 400 [1]  
Due after Ten Years, Yield 2.74% [1],[2]  
Amortized Cost 60,022 [1] 55,150
Total, Yield 2.59% [1],[2]  
Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract]    
Debt Securities Carried at Fair Value 292,861 268,795
Held-to-maturity Securities, Debt Maturities, Fair Value [Abstract]    
Due in One Year or Less, Amount 108 [1]  
Due after One Year through Five Years, Amount 19 [1]  
Due after Five Years though Ten Years, Amount 58,669 [1]  
Due after Ten Years, Amount 385 [1]  
Held-to-maturity Securities, Fair Value 59,181 [1] 52,430
US Government Corporations and Agencies Securities [Member]
    
Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Fiscal Year Maturity [Abstract]    
Due in One Year or Less, Amount 476  
Due in One Year or Less, Yield 0.48% [2]  
Due after One Year through Five Years, Amount 29,922  
Due after One Year through Five Years, Yield 1.66% [2]  
Due after Five Years though Ten Years, Amount 10,779  
Due after Five Years though Ten Years, Yield 2.45% [2]  
Due after Ten Years, Amount 1,403  
Due after Ten Years, Yield 3.48% [2]  
Total, Amount 42,580  
Total, Yield 1.91% [2]  
Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract]    
Due in One Year or Less, Amount 476  
Due after One Year through Five Years, Amount 30,089  
Due after Five Years though Ten Years, Amount 10,938  
Due after Ten Years, Amount 1,442  
Debt Securities Carried at Fair Value 42,945  
Debt Securities [Member]
    
Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Fiscal Year Maturity [Abstract]    
Due in One Year or Less, Amount 30,102  
Due in One Year or Less, Yield 1.11% [2]  
Due after One Year through Five Years, Amount 58,226  
Due after One Year through Five Years, Yield 2.00% [2]  
Due after Five Years though Ten Years, Amount 161,447  
Due after Five Years though Ten Years, Yield 2.90% [2]  
Due after Ten Years, Amount 42,974  
Due after Ten Years, Yield 3.36% [2]  
Total, Amount 292,749  
Total, Yield 2.61% [2]  
Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract]    
Due in One Year or Less, Amount 30,123  
Due after One Year through Five Years, Amount 58,770  
Due after Five Years though Ten Years, Amount 161,569  
Due after Ten Years, Amount 42,399  
Debt Securities Carried at Fair Value 292,861  
Agency MBS [Member]
    
Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Fiscal Year Maturity [Abstract]    
Due in One Year or Less, Amount 15  
Due in One Year or Less, Yield 4.64% [2]  
Due after One Year through Five Years, Amount 11,121  
Due after One Year through Five Years, Yield 2.79% [2]  
Due after Five Years though Ten Years, Amount 133,184  
Due after Five Years though Ten Years, Yield 2.97% [2]  
Due after Ten Years, Amount 34,223  
Due after Ten Years, Yield 2.86% [2]  
Total, Amount 178,543  
Total, Yield 2.94% [2]  
Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract]    
Due in One Year or Less, Amount 15  
Due after One Year through Five Years, Amount 11,454  
Due after Five Years though Ten Years, Amount 133,005  
Due after Ten Years, Amount 33,517  
Debt Securities Carried at Fair Value 177,991  
Collateralized Mortgage Obligations [Member]
    
Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Fiscal Year Maturity [Abstract]    
Due in One Year or Less, Amount 992  
Due in One Year or Less, Yield 0.01% [2]  
Due after One Year through Five Years, Amount 2,937  
Due after One Year through Five Years, Yield 1.86% [2]  
Due after Five Years though Ten Years, Amount 8,417  
Due after Five Years though Ten Years, Yield 2.87% [2]  
Due after Ten Years, Amount 24  
Due after Ten Years, Yield 0.61% [2]  
Total, Amount 12,370  
Total, Yield 2.39% [2]  
Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract]    
Due in One Year or Less, Amount 995  
Due after One Year through Five Years, Amount 2,925  
Due after Five Years though Ten Years, Amount 8,497  
Due after Ten Years, Amount 24  
Debt Securities Carried at Fair Value 12,441  
Residential Mortgage Backed Securities [Member]
    
Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Fiscal Year Maturity [Abstract]    
Due in One Year or Less, Amount 675  
Due in One Year or Less, Yield 4.71% [2]  
Due after One Year through Five Years, Amount 1,760  
Due after One Year through Five Years, Yield 4.94% [2]  
Due after Five Years though Ten Years, Amount 1,454  
Due after Five Years though Ten Years, Yield 5.12% [2]  
Due after Ten Years, Amount 4,373  
Due after Ten Years, Yield 8.39% [2]  
Total, Amount 8,262  
Total, Yield 6.89% [2]  
Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract]    
Due in One Year or Less, Amount 678  
Due after One Year through Five Years, Amount 1,763  
Due after Five Years though Ten Years, Amount 1,494  
Due after Ten Years, Amount 4,472  
Debt Securities Carried at Fair Value 8,407  
Commercial Mortgage Backed Securities [Member]
    
Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Fiscal Year Maturity [Abstract]    
Due in One Year or Less, Amount 409  
Due in One Year or Less, Yield 6.65% [2]  
Due after One Year through Five Years, Amount 190  
Due after One Year through Five Years, Yield 3.08% [2]  
Due after Five Years though Ten Years, Amount 2,449  
Due after Five Years though Ten Years, Yield 2.74% [2]  
Due after Ten Years, Amount 7  
Due after Ten Years, Yield 4.09% [2]  
Total, Amount 3,055  
Total, Yield 3.29% [2]  
Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract]    
Due in One Year or Less, Amount 422  
Due after One Year through Five Years, Amount 196  
Due after Five Years though Ten Years, Amount 2,446  
Due after Ten Years, Amount 7  
Debt Securities Carried at Fair Value 3,071  
Foreign Securities [Member]
    
Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Fiscal Year Maturity [Abstract]    
Due in One Year or Less, Amount 21,714  
Due in One Year or Less, Yield 0.83% [2]  
Due after One Year through Five Years, Amount 2,593  
Due after One Year through Five Years, Yield 3.60% [2]  
Due after Five Years though Ten Years, Amount 119  
Due after Five Years though Ten Years, Yield 4.09% [2]  
Total, Amount 24,426  
Total, Yield 1.14% [2]  
Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract]    
Due in One Year or Less, Amount 21,713  
Due after One Year through Five Years, Amount 2,628  
Due after Five Years though Ten Years, Amount 123  
Debt Securities Carried at Fair Value 24,464  
Corporate Bond Securities [Member]
    
Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Fiscal Year Maturity [Abstract]    
Due in One Year or Less, Amount 400  
Due in One Year or Less, Yield 2.28% [2]  
Due after One Year through Five Years, Amount 159  
Due after One Year through Five Years, Yield 3.76% [2]  
Due after Five Years though Ten Years, Amount 112  
Due after Five Years though Ten Years, Yield 3.91% [2]  
Due after Ten Years, Amount 142  
Due after Ten Years, Yield 1.29% [2]  
Total, Amount 813  
Total, Yield 2.62% [2]  
Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract]    
Due in One Year or Less, Amount 399  
Due after One Year through Five Years, Amount 170  
Due after Five Years though Ten Years, Amount 118  
Due after Ten Years, Amount 141  
Debt Securities Carried at Fair Value 828  
Other Debt Obligations [Member]
    
Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Fiscal Year Maturity [Abstract]    
Due in One Year or Less, Amount 5,271  
Due in One Year or Less, Yield 1.50% [2]  
Due after One Year through Five Years, Amount 6,096  
Due after One Year through Five Years, Yield 1.22% [2]  
Due after Five Years though Ten Years, Amount 1,683  
Due after Five Years though Ten Years, Yield 2.10% [2]  
Due after Ten Years, Amount 848  
Due after Ten Years, Yield 3.63% [2]  
Total, Amount 13,898  
Total, Yield 1.43% [2]  
Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract]    
Due in One Year or Less, Amount 5,275  
Due after One Year through Five Years, Amount 6,096  
Due after Five Years though Ten Years, Amount 1,706  
Due after Ten Years, Amount 848  
Debt Securities Carried at Fair Value 13,925  
Taxable Securities [Member]
    
Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Fiscal Year Maturity [Abstract]    
Due in One Year or Less, Amount 29,952  
Due in One Year or Less, Yield 1.10% [2]  
Due after One Year through Five Years, Amount 54,778  
Due after One Year through Five Years, Yield 2.06% [2]  
Due after Five Years though Ten Years, Amount 158,197  
Due after Five Years though Ten Years, Yield 2.94% [2]  
Due after Ten Years, Amount 41,020  
Due after Ten Years, Yield 3.48% [2]  
Total, Amount 283,947  
Total, Yield 2.65% [2]  
Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract]    
Due in One Year or Less, Amount 29,973  
Due after One Year through Five Years, Amount 55,321  
Due after Five Years though Ten Years, Amount 158,327  
Due after Ten Years, Amount 40,451  
Debt Securities Carried at Fair Value 284,072  
Tax-exempt securities [Member]
    
Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Fiscal Year Maturity [Abstract]    
Due in One Year or Less, Amount 150  
Due in One Year or Less, Yield 1.58% [2]  
Due after One Year through Five Years, Amount 3,448  
Due after One Year through Five Years, Yield 1.06% [2]  
Due after Five Years though Ten Years, Amount 3,250  
Due after Five Years though Ten Years, Yield 1.11% [2]  
Due after Ten Years, Amount 1,954  
Due after Ten Years, Yield 0.88% [2]  
Total, Amount 8,802  
Total, Yield 1.13% [2]  
Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract]    
Due in One Year or Less, Amount 150  
Due after One Year through Five Years, Amount 3,449  
Due after Five Years though Ten Years, Amount 3,242  
Due after Ten Years, Amount 1,948  
Debt Securities Carried at Fair Value $ 8,789  
[1] Substantially all U.S. agency MBS.
[2] Average yield is computed using the effective yield of each security at the end of the period, weighted based on the amortized cost of each security. The effective yield considers the contractual coupon, amortization of premiums and accretion of discounts, and excludes the effect of related hedging derivatives.