Annual report pursuant to Section 13 and 15(d)

Securities - Expected Maturity (Details)

v2.4.0.8
Securities - Expected Maturity (Details) (USD $)
In Millions, unless otherwise specified
Dec. 31, 2013
Dec. 31, 2012
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 125 [1]  
Due after one Year through Five Years, Yield 1.79% [1],[2]  
Due after Five Years through Ten Years, Amount 53,699 [1]  
Due after Five Years through Ten Years, Yield 2.60% [1],[2]  
Due after Ten Years, Amount 1,326 [1]  
Due after Ten Years, Yield 2.72% [1],[2]  
Amortized Cost 55,150 [1] 49,481
Total, Yield 2.61% [1],[2]  
Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract]    
Debt Securities Carried at Fair Value 268,795 310,850
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 125 [1]  
Due after Five Years through Ten Years, Amount 51,062 [1]  
Due after Ten Years, Amount 1,243 [1]  
Held-to-maturity Securities, Fair Value 52,430 [1] 50,270
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 535  
Due in One Year or Less, Yield 0.62% [2]  
Due after One Year through Five Years, Amount 2,337  
Due after One Year through Five Years, Yield 1.71% [2]  
Due after Five Years through Ten Years, Amount 8,844  
Due after Five Years through Ten Years, Yield 2.44% [2]  
Due after Ten Years, Amount 1,339  
Due after Ten Years, Yield 3.84% [2]  
Total, Amount 13,055  
Total, Yield 2.38% [2]  
Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract]    
Due in One Year or Less, Amount 537  
Due after One Year through Five Years, Amount 2,333  
Due after Five Years through Ten Years, Amount 8,831  
Due after Ten Years, Amount 1,315  
Debt Securities Carried at Fair Value 13,016  
Debt Securities [Member]
    
Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Fiscal Year Maturity [Abstract]    
Due in One Year or Less, Amount 28,059  
Due in One Year or Less, Yield 1.47% [2]  
Due after One Year through Five Years, Amount 29,903  
Due after One Year through Five Years, Yield 2.46% [2]  
Due after Five Years through Ten Years, Amount 124,320  
Due after Five Years through Ten Years, Yield 2.99% [2]  
Due after Ten Years, Amount 93,008  
Due after Ten Years, Yield 2.92% [2]  
Total, Amount 275,290  
Total, Yield 2.75% [2]  
Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract]    
Due in One Year or Less, Amount 28,066  
Due after One Year through Five Years, Amount 29,973  
Due after Five Years through Ten Years, Amount 121,924  
Due after Ten Years, Amount 88,832  
Debt Securities Carried at Fair Value 268,795  
Agency MBS [Member]
    
Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Fiscal Year Maturity [Abstract]    
Due in One Year or Less, Amount 11  
Due in One Year or Less, Yield 4.44% [2]  
Due after One Year through Five Years, Amount 9,649  
Due after One Year through Five Years, Yield 2.93% [2]  
Due after Five Years through Ten Years, Amount 90,407  
Due after Five Years through Ten Years, Yield 3.10% [2]  
Due after Ten Years, Amount 87,728  
Due after Ten Years, Yield 2.96% [2]  
Total, Amount 187,795  
Total, Yield 3.03% [2]  
Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract]    
Due in One Year or Less, Amount 11  
Due after One Year through Five Years, Amount 9,708  
Due after Five Years through Ten Years, Amount 88,191  
Due after Ten Years, Amount 83,525  
Debt Securities Carried at Fair Value 181,435  
Collateralized Mortgage Obligations [Member]
    
Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Fiscal Year Maturity [Abstract]    
Due in One Year or Less, Amount 1,482  
Due in One Year or Less, Yield 0.01% [2]  
Due after One Year through Five Years, Amount 3,373  
Due after One Year through Five Years, Yield 2.09% [2]  
Due after Five Years through Ten Years, Amount 18,036  
Due after Five Years through Ten Years, Yield 2.96% [2]  
Due after Ten Years, Amount 29  
Due after Ten Years, Yield 0.93% [2]  
Total, Amount 22,920  
Total, Yield 2.63% [2]  
Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract]    
Due in One Year or Less, Amount 1,480  
Due after One Year through Five Years, Amount 3,284  
Due after Five Years through Ten Years, Amount 17,916  
Due after Ten Years, Amount 30  
Debt Securities Carried at Fair Value 22,710  
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 815  
Due in One Year or Less, Yield 4.10% [2]  
Due after One Year through Five Years, Amount 2,200  
Due after One Year through Five Years, Yield 4.06% [2]  
Due after Five Years through Ten Years, Amount 1,149  
Due after Five Years through Ten Years, Yield 3.13% [2]  
Due after Ten Years, Amount 1,960  
Due after Ten Years, Yield 2.59% [2]  
Total, Amount 6,124  
Total, Yield 3.42% [2]  
Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract]    
Due in One Year or Less, Amount 805  
Due after One Year through Five Years, Amount 2,236  
Due after Five Years through Ten Years, Amount 1,173  
Due after Ten Years, Amount 2,025  
Debt Securities Carried at Fair Value 6,239  
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 1,683  
Due in One Year or Less, Yield 5.01% [2]  
Due after One Year through Five Years, Amount 466  
Due after One Year through Five Years, Yield 6.43% [2]  
Due after Five Years through Ten Years, Amount 1,089  
Due after Five Years through Ten Years, Yield 2.51% [2]  
Due after Ten Years, Amount 7  
Due after Ten Years, Yield 4.09% [2]  
Total, Amount 3,245  
Total, Yield 4.37% [2]  
Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract]    
Due in One Year or Less, Amount 1,715  
Due after One Year through Five Years, Amount 494  
Due after Five Years through Ten Years, Amount 1,013  
Due after Ten Years, Amount 7  
Debt Securities Carried at Fair Value 3,229  
Foreign Securities [Member]
    
Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Fiscal Year Maturity [Abstract]    
Due in One Year or Less, Amount 16,288  
Due in One Year or Less, Yield 1.04% [2]  
Due after One Year through Five Years, Amount 2,074  
Due after One Year through Five Years, Yield 3.98% [2]  
Due after Five Years through Ten Years, Amount 149  
Due after Five Years through Ten Years, Yield 3.34% [2]  
Due after Ten Years, Amount 8  
Due after Ten Years, Yield 3.10% [2]  
Total, Amount 18,519  
Total, Yield 1.39% [2]  
Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract]    
Due in One Year or Less, Amount 16,273  
Due after One Year through Five Years, Amount 2,099  
Due after Five Years through Ten Years, Amount 155  
Due after Ten Years, Amount 8  
Debt Securities Carried at Fair Value 18,535  
Corporate Bond Securities [Member]
    
Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Fiscal Year Maturity [Abstract]    
Due in One Year or Less, Amount 395  
Due in One Year or Less, Yield 2.48% [2]  
Due after One Year through Five Years, Amount 206  
Due after One Year through Five Years, Yield 5.69% [2]  
Due after Five Years through Ten Years, Amount 112  
Due after Five Years through Ten Years, Yield 4.12% [2]  
Due after Ten Years, Amount 147  
Due after Ten Years, Yield 1.38% [2]  
Total, Amount 860  
Total, Yield 3.27% [2]  
Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract]    
Due in One Year or Less, Amount 395  
Due after One Year through Five Years, Amount 220  
Due after Five Years through Ten Years, Amount 116  
Due after Ten Years, Amount 142  
Debt Securities Carried at Fair Value 873  
Other taxable securities [Member]
    
Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Fiscal Year Maturity [Abstract]    
Due in One Year or Less, Amount 6,655  
Due in One Year or Less, Yield 1.58% [2]  
Due after One Year through Five Years, Amount 7,274  
Due after One Year through Five Years, Yield 1.37% [2]  
Due after Five Years through Ten Years, Amount 2,105  
Due after Five Years through Ten Years, Yield 2.06% [2]  
Due after Ten Years, Amount 771  
Due after Ten Years, Yield 0.84% [2]  
Total, Amount 16,805  
Total, Yield 1.50% [2]  
Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract]    
Due in One Year or Less, Amount 6,656  
Due after One Year through Five Years, Amount 7,280  
Due after Five Years through Ten Years, Amount 2,120  
Due after Ten Years, Amount 774  
Debt Securities Carried at Fair Value 16,830  
Taxable Securities [Member]
    
Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Fiscal Year Maturity [Abstract]    
Due in One Year or Less, Amount 27,864  
Due in One Year or Less, Yield 1.46% [2]  
Due after One Year through Five Years, Amount 27,579  
Due after One Year through Five Years, Yield 2.56% [2]  
Due after Five Years through Ten Years, Amount 121,891  
Due after Five Years through Ten Years, Yield 3.01% [2]  
Due after Ten Years, Amount 91,989  
Due after Ten Years, Yield 2.95% [2]  
Total, Amount 269,323  
Total, Yield 2.78% [2]  
Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract]    
Due in One Year or Less, Amount 27,872  
Due after One Year through Five Years, Amount 27,654  
Due after Five Years through Ten Years, Amount 119,515  
Due after Ten Years, Amount 87,826  
Debt Securities Carried at Fair Value 262,867  
Tax-exempt securities [Member]
    
Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Fiscal Year Maturity [Abstract]    
Due in One Year or Less, Amount 195  
Due in One Year or Less, Yield 1.66% [2]  
Due after One Year through Five Years, Amount 2,324  
Due after One Year through Five Years, Yield 1.49% [2]  
Due after Five Years through Ten Years, Amount 2,429  
Due after Five Years through Ten Years, Yield 1.90% [2]  
Due after Ten Years, Amount 1,019  
Due after Ten Years, Yield 0.61% [2]  
Total, Amount 5,967  
Total, Yield 1.54% [2]  
Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract]    
Due in One Year or Less, Amount 194  
Due after One Year through Five Years, Amount 2,319  
Due after Five Years through Ten Years, Amount 2,409  
Due after Ten Years, Amount 1,006  
Debt Securities Carried at Fair Value $ 5,928  
[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.