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
Mar. 31, 2014
Dec. 31, 2013
Held-to-maturity Securities, Debt Maturities, Net Carrying Amount [Abstract]    
Due in One Year or Less, Amount $ 0 [1]  
Due in One Year or Less, Yield 0.00% [1],[2]  
Due after One Year through Five Years, Amount 130 [1]  
Due after One Year through Five Years, Yield 1.51% [1],[2]  
Due after Five Years through Ten Years, Amount 54,288 [1]  
Due after Five Years though Ten Years, Yield 2.58% [1],[2]  
Due after Ten Years, Amount 702 [1]  
Due after Ten Years, Yield 2.62% [1],[2]  
Amortized Cost 55,120 [1] 55,150
Total, Yield 2.58% [1],[2]  
Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract]    
Debt Securities Carried at Fair Value 285,576 268,795
Held-to-maturity Securities, Debt Maturities, Fair Value [Abstract]    
Due in One Year or Less, Amount 0 [1]  
Due after One Year through Five Years, Amount 130 [1]  
Due after Five Years though Ten Years, Amount 52,311 [1]  
Due after Ten Years, Amount 665 [1]  
Held-to-maturity Securities, Fair Value 53,106 [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 505  
Due in One Year or Less, Yield 0.53% [2]  
Due after One Year through Five Years, Amount 17,791  
Due after One Year through Five Years, Yield 1.62% [2]  
Due after Five Years though Ten Years, Amount 14,061  
Due after Five Years though Ten Years, Yield 2.32% [2]  
Due after Ten Years, Amount 1,348  
Due after Ten Years, Yield 3.78% [2]  
Total, Amount 33,705  
Total, Yield 1.98% [2]  
Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract]    
Due in One Year or Less, Amount 507  
Due after One Year through Five Years, Amount 17,737  
Due after Five Years though Ten Years, Amount 14,102  
Due after Ten Years, Amount 1,403  
Debt Securities Carried at Fair Value 33,749  
Debt Securities [Member]
    
Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Fiscal Year Maturity [Abstract]    
Due in One Year or Less, Amount 28,908  
Due in One Year or Less, Yield 1.21% [2]  
Due after One Year through Five Years, Amount 45,874  
Due after One Year through Five Years, Yield 2.10% [2]  
Due after Five Years though Ten Years, Amount 150,394  
Due after Five Years though Ten Years, Yield 2.95% [2]  
Due after Ten Years, Amount 64,439  
Due after Ten Years, Yield 2.97% [2]  
Total, Amount 289,615  
Total, Yield 2.65% [2]  
Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract]    
Due in One Year or Less, Amount 28,910  
Due after One Year through Five Years, Amount 46,072  
Due after Five Years though Ten Years, Amount 148,441  
Due after Ten Years, Amount 62,153  
Debt Securities Carried at Fair Value 285,576  
Agency MBS [Member]
    
Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Fiscal Year Maturity [Abstract]    
Due in One Year or Less, Amount 12  
Due in One Year or Less, Yield 4.61% [2]  
Due after One Year through Five Years, Amount 11,613  
Due after One Year through Five Years, Yield 2.77% [2]  
Due after Five Years though Ten Years, Amount 115,370  
Due after Five Years though Ten Years, Yield 3.05% [2]  
Due after Ten Years, Amount 59,393  
Due after Ten Years, Yield 2.91% [2]  
Total, Amount 186,388  
Total, Yield 2.99% [2]  
Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract]    
Due in One Year or Less, Amount 12  
Due after One Year through Five Years, Amount 11,751  
Due after Five Years though Ten Years, Amount 113,240  
Due after Ten Years, Amount 57,034  
Debt Securities Carried at Fair Value 182,037  
Collateralized Mortgage Obligations [Member]
    
Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Fiscal Year Maturity [Abstract]    
Due in One Year or Less, Amount 1,226  
Due in One Year or Less, Yield 0.01% [2]  
Due after One Year through Five Years, Amount 3,750  
Due after One Year through Five Years, Yield 1.74% [2]  
Due after Five Years though Ten Years, Amount 13,577  
Due after Five Years though Ten Years, Yield 2.94% [2]  
Due after Ten Years, Amount 25  
Due after Ten Years, Yield 0.61% [2]  
Total, Amount 18,578  
Total, Yield 2.50% [2]  
Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract]    
Due in One Year or Less, Amount 1,229  
Due after One Year through Five Years, Amount 3,718  
Due after Five Years though Ten Years, Amount 13,723  
Due after Ten Years, Amount 25  
Debt Securities Carried at Fair Value 18,695  
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 727  
Due in One Year or Less, Yield 4.15% [2]  
Due after One Year through Five Years, Amount 1,513  
Due after One Year through Five Years, Yield 3.92% [2]  
Due after Five Years though Ten Years, Amount 1,008  
Due after Five Years though Ten Years, Yield 3.37% [2]  
Due after Ten Years, Amount 1,863  
Due after Ten Years, Yield 6.73% [2]  
Total, Amount 5,111  
Total, Yield 4.87% [2]  
Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract]    
Due in One Year or Less, Amount 725  
Due after One Year through Five Years, Amount 1,607  
Due after Five Years though Ten Years, Amount 1,037  
Due after Ten Years, Amount 1,889  
Debt Securities Carried at Fair Value 5,258  
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 541  
Due in One Year or Less, Yield 4.82% [2]  
Due after One Year through Five Years, Amount 195  
Due after One Year through Five Years, Yield 7.67% [2]  
Due after Five Years though Ten Years, Amount 1,785  
Due after Five Years though Ten Years, Yield 2.68% [2]  
Due after Ten Years, Amount 7  
Due after Ten Years, Yield 4.09% [2]  
Total, Amount 2,528  
Total, Yield 3.53% [2]  
Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract]    
Due in One Year or Less, Amount 550  
Due after One Year through Five Years, Amount 212  
Due after Five Years though Ten Years, Amount 1,735  
Due after Ten Years, Amount 7  
Debt Securities Carried at Fair Value 2,504  
Foreign Securities [Member]
    
Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Fiscal Year Maturity [Abstract]    
Due in One Year or Less, Amount 18,650  
Due in One Year or Less, Yield 0.95% [2]  
Due after One Year through Five Years, Amount 2,552  
Due after One Year through Five Years, Yield 3.42% [2]  
Due after Five Years though Ten Years, Amount 126  
Due after Five Years though Ten Years, Yield 7.58% [2]  
Due after Ten Years, Amount 8  
Due after Ten Years, Yield 3.17% [2]  
Total, Amount 21,336  
Total, Yield 1.29% [2]  
Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract]    
Due in One Year or Less, Amount 18,634  
Due after One Year through Five Years, Amount 2,579  
Due after Five Years though Ten Years, Amount 131  
Due after Ten Years, Amount 8  
Debt Securities Carried at Fair Value 21,352  
Corporate Bond Securities [Member]
    
Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Fiscal Year Maturity [Abstract]    
Due in One Year or Less, Amount 393  
Due in One Year or Less, Yield 2.25% [2]  
Due after One Year through Five Years, Amount 181  
Due after One Year through Five Years, Yield 4.96% [2]  
Due after Five Years though Ten Years, Amount 113  
Due after Five Years though Ten Years, Yield 4.04% [2]  
Due after Ten Years, Amount 144  
Due after Ten Years, Yield 1.31% [2]  
Total, Amount 831  
Total, Yield 2.92% [2]  
Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract]    
Due in One Year or Less, Amount 394  
Due after One Year through Five Years, Amount 193  
Due after Five Years though Ten Years, Amount 115  
Due after Ten Years, Amount 143  
Debt Securities Carried at Fair Value 845  
Other Debt Obligations [Member]
    
Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Fiscal Year Maturity [Abstract]    
Due in One Year or Less, Amount 6,677  
Due in One Year or Less, Yield 1.51% [2]  
Due after One Year through Five Years, Amount 5,563  
Due after One Year through Five Years, Yield 1.37% [2]  
Due after Five Years though Ten Years, Amount 1,803  
Due after Five Years though Ten Years, Yield 2.10% [2]  
Due after Ten Years, Amount 652  
Due after Ten Years, Yield 0.81% [2]  
Total, Amount 14,695  
Total, Yield 1.49% [2]  
Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract]    
Due in One Year or Less, Amount 6,683  
Due after One Year through Five Years, Amount 5,561  
Due after Five Years though Ten Years, Amount 1,822  
Due after Ten Years, Amount 656  
Debt Securities Carried at Fair Value 14,722  
Taxable Securities [Member]
    
Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Fiscal Year Maturity [Abstract]    
Due in One Year or Less, Amount 28,731  
Due in One Year or Less, Yield 1.20% [2]  
Due after One Year through Five Years, Amount 43,158  
Due after One Year through Five Years, Yield 2.14% [2]  
Due after Five Years though Ten Years, Amount 147,843  
Due after Five Years though Ten Years, Yield 2.97% [2]  
Due after Ten Years, Amount 63,440  
Due after Ten Years, Yield 3.01% [2]  
Total, Amount 283,172  
Total, Yield 2.67% [2]  
Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract]    
Due in One Year or Less, Amount 28,734  
Due after One Year through Five Years, Amount 43,358  
Due after Five Years though Ten Years, Amount 145,905  
Due after Ten Years, Amount 61,165  
Debt Securities Carried at Fair Value 279,162  
Tax-exempt securities [Member]
    
Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Fiscal Year Maturity [Abstract]    
Due in One Year or Less, Amount 177  
Due in One Year or Less, Yield 2.16% [2]  
Due after One Year through Five Years, Amount 2,716  
Due after One Year through Five Years, Yield 1.49% [2]  
Due after Five Years though Ten Years, Amount 2,551  
Due after Five Years though Ten Years, Yield 1.78% [2]  
Due after Ten Years, Amount 999  
Due after Ten Years, Yield 0.60% [2]  
Total, Amount 6,443  
Total, Yield 1.53% [2]  
Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract]    
Due in One Year or Less, Amount 176  
Due after One Year through Five Years, Amount 2,714  
Due after Five Years though Ten Years, Amount 2,536  
Due after Ten Years, Amount 988  
Debt Securities Carried at Fair Value $ 6,414  
[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.