Annual report pursuant to Section 13 and 15(d)

Securities Securities - Expected Maturity (Details)

v2.4.0.6
Securities Securities - Expected Maturity (Details) (USD $)
In Millions, unless otherwise specified
Dec. 31, 2011
Dec. 31, 2010
Available-for-sale Securities, Debt Maturities, Amortized Cost Basis [Abstract]    
Available-for-sale Securities, Amortized Cost $ 271,172 $ 336,498
Held-to-maturity Securities, Debt Maturities, Net Carrying Amount [Abstract]    
Held-to-maturity Securities, Debt Maturities, within One Year, Net Carrying Amount 9 [1]  
Held-to-maturity Securities, Debt Maturities, Yield, within One Year 3.00% [1],[2]  
Held-to-maturity Securities, Debt Maturities, after One Through Five Years, Net Carrying Amount 60 [1]  
Held-to-maturity Securities, Debt Maturities, Yield, after One Through Five Years 2.90% [1],[2]  
Held-to-maturity Securities, Debt Maturities, after Five Through Ten Years, Net Carrying Amount 9,199 [1]  
Held-to-maturity Securities, Debt Maturities, Yield, after Five Through Ten Years 2.90% [1],[2]  
Held-to-maturity Securities, Debt Maturities, after Ten Years, Net Carrying Amount 25,997 [1]  
Held-to-maturity Securities, Debt Maturities, Yield, after Ten Years 3.00% [1],[2]  
Held-to-maturity Securities, Debt Maturities, Net Carrying Amount 35,265 [1]  
Held-to-maturity Securities, Debt Maturities, Yield 3.00% [1],[2]  
Available-for-sale Securities, Debt Maturities, Fair Value [Abstract]    
AFS Debt Securities 276,151 337,627
Held-to-maturity Securities, Debt Maturities, Fair Value [Abstract]    
Held-to-maturity Securities, Debt Maturities, within One Year, Fair Value 9 [1]  
Held-to-maturity Securities, Debt Maturities, after One Through Five Years, Fair Value 60 [1]  
Held-to-maturity Securities, Debt Maturities, after Five Through Ten Years, Fair Value 9,243 [1]  
Held-to-maturity Securities, Debt Maturities, after Ten Years, Fair Value 26,130 [1]  
Held-to-maturity Securities, Debt Maturities, Fair Value 35,442 [1]  
United States Treasury And Agency Securities Member
    
Available-for-sale Securities, Debt Maturities, Amortized Cost Basis [Abstract]    
Available-for-sale Securities, Debt Maturities, within One Year, Amortized Cost Basis 556  
Available For Sale Securities Debt Maturities, Yield, Within One Year 4.90% [2]  
Available-for-sale Securities, Debt Maturities, after One Through Five Years, Amortized Cost Basis 767  
Available-for-sale Securities, Debt Maturities, Yield, after One Through Five Years 5.40% [2]  
Available-for-sale Securities, Debt Maturities, after Five Through Ten Years, Amortized Cost Basis 2,377  
Available-for-sale Securities, Debt Maturities, Yield, after Five Through Ten Years 5.30% [2]  
Available-for-sale Securities, Debt Maturities, after Ten Years, Amortized Cost Basis 39,733  
Available-for-sale Securities, Debt Maturities, Yield, after Ten Years 2.70% [2]  
Available-for-sale Securities, Amortized Cost 43,433  
Available-for-sale Securities, Debt Maturities, Yield 2.80% [2]  
Available-for-sale Securities, Debt Maturities, Fair Value [Abstract]    
Available-for-sale Securities, Debt Maturities, within One Year, Fair Value 558  
Available-for-sale Securities, Debt Maturities, after One Through Five Years, Fair Value 794  
Available-for-sale Securities, Debt Maturities, after Five Through Ten Years, Fair Value 2,580  
Available-for-sale Securities, Debt Maturities, after Ten Years, Fair Value 38,932  
AFS Debt Securities 42,864  
Debt Securities [Member]
    
Available-for-sale Securities, Debt Maturities, Amortized Cost Basis [Abstract]    
Available-for-sale Securities, Debt Maturities, within One Year, Amortized Cost Basis 8,761  
Available For Sale Securities Debt Maturities, Yield, Within One Year 2.37% [2]  
Available-for-sale Securities, Debt Maturities, after One Through Five Years, Amortized Cost Basis 117,727  
Available-for-sale Securities, Debt Maturities, Yield, after One Through Five Years 3.23% [2]  
Available-for-sale Securities, Debt Maturities, after Five Through Ten Years, Amortized Cost Basis 75,249  
Available-for-sale Securities, Debt Maturities, Yield, after Five Through Ten Years 3.63% [2]  
Available-for-sale Securities, Debt Maturities, after Ten Years, Amortized Cost Basis 69,435  
Available-for-sale Securities, Debt Maturities, Yield, after Ten Years 2.83% [2]  
Available-for-sale Securities, Amortized Cost 271,172  
Available-for-sale Securities, Debt Maturities, Yield 3.25% [2]  
Available-for-sale Securities, Debt Maturities, Fair Value [Abstract]    
Available-for-sale Securities, Debt Maturities, within One Year, Fair Value 8,748  
Available-for-sale Securities, Debt Maturities, after One Through Five Years, Fair Value 120,108  
Available-for-sale Securities, Debt Maturities, after Five Through Ten Years, Fair Value 78,152  
Available-for-sale Securities, Debt Maturities, after Ten Years, Fair Value 69,143  
AFS Debt Securities 276,151  
Agency Securities [Member]
    
Available-for-sale Securities, Debt Maturities, Amortized Cost Basis [Abstract]    
Available-for-sale Securities, Debt Maturities, within One Year, Amortized Cost Basis 24  
Available For Sale Securities Debt Maturities, Yield, Within One Year 4.40% [2]  
Available-for-sale Securities, Debt Maturities, after One Through Five Years, Amortized Cost Basis 54,675  
Available-for-sale Securities, Debt Maturities, Yield, after One Through Five Years 3.30% [2]  
Available-for-sale Securities, Debt Maturities, after Five Through Ten Years, Amortized Cost Basis 58,686  
Available-for-sale Securities, Debt Maturities, Yield, after Five Through Ten Years 3.60% [2]  
Available-for-sale Securities, Debt Maturities, after Ten Years, Amortized Cost Basis 24,688  
Available-for-sale Securities, Debt Maturities, Yield, after Ten Years 3.40% [2]  
Available-for-sale Securities, Amortized Cost 138,073 190,409
Available-for-sale Securities, Debt Maturities, Yield 3.50% [2]  
Available-for-sale Securities, Debt Maturities, Fair Value [Abstract]    
Available-for-sale Securities, Debt Maturities, within One Year, Fair Value 25  
Available-for-sale Securities, Debt Maturities, after One Through Five Years, Fair Value 56,084  
Available-for-sale Securities, Debt Maturities, after Five Through Ten Years, Fair Value 61,170  
Available-for-sale Securities, Debt Maturities, after Ten Years, Fair Value 25,284  
AFS Debt Securities 142,563 191,217
Collateralized Mortgage Obligations [Member]
    
Available-for-sale Securities, Debt Maturities, Amortized Cost Basis [Abstract]    
Available-for-sale Securities, Debt Maturities, within One Year, Amortized Cost Basis 57  
Available For Sale Securities Debt Maturities, Yield, Within One Year 0.70% [2]  
Available-for-sale Securities, Debt Maturities, after One Through Five Years, Amortized Cost Basis 35,709  
Available-for-sale Securities, Debt Maturities, Yield, after One Through Five Years 2.50% [2]  
Available-for-sale Securities, Debt Maturities, after Five Through Ten Years, Amortized Cost Basis 8,606  
Available-for-sale Securities, Debt Maturities, Yield, after Five Through Ten Years 3.80% [2]  
Available-for-sale Securities, Debt Maturities, after Ten Years, Amortized Cost Basis 20  
Available-for-sale Securities, Debt Maturities, Yield, after Ten Years 1.10% [2]  
Available-for-sale Securities, Amortized Cost 44,392 36,639
Available-for-sale Securities, Debt Maturities, Yield 2.70% [2]  
Available-for-sale Securities, Debt Maturities, Fair Value [Abstract]    
Available-for-sale Securities, Debt Maturities, within One Year, Fair Value 58  
Available-for-sale Securities, Debt Maturities, after One Through Five Years, Fair Value 36,057  
Available-for-sale Securities, Debt Maturities, after Five Through Ten Years, Fair Value 8,864  
Available-for-sale Securities, Debt Maturities, after Ten Years, Fair Value 20  
AFS Debt Securities 44,999 37,017
Residential Mortgage Backed Securities [Member]
    
Available-for-sale Securities, Debt Maturities, Amortized Cost Basis [Abstract]    
Available-for-sale Securities, Debt Maturities, within One Year, Amortized Cost Basis 2,758  
Available For Sale Securities Debt Maturities, Yield, Within One Year 4.30% [2]  
Available-for-sale Securities, Debt Maturities, after One Through Five Years, Amortized Cost Basis 9,900  
Available-for-sale Securities, Debt Maturities, Yield, after One Through Five Years 5.10% [2]  
Available-for-sale Securities, Debt Maturities, after Five Through Ten Years, Amortized Cost Basis 1,775  
Available-for-sale Securities, Debt Maturities, Yield, after Five Through Ten Years 4.70% [2]  
Available-for-sale Securities, Debt Maturities, after Ten Years, Amortized Cost Basis 515  
Available-for-sale Securities, Debt Maturities, Yield, after Ten Years 3.30% [2]  
Available-for-sale Securities, Amortized Cost 14,948 [3] 23,458
Available-for-sale Securities, Debt Maturities, Yield 4.80% [2]  
Available-for-sale Securities, Debt Maturities, Fair Value [Abstract]    
Available-for-sale Securities, Debt Maturities, within One Year, Fair Value 2,736  
Available-for-sale Securities, Debt Maturities, after One Through Five Years, Fair Value 9,851  
Available-for-sale Securities, Debt Maturities, after Five Through Ten Years, Fair Value 1,698  
Available-for-sale Securities, Debt Maturities, after Ten Years, Fair Value 482  
AFS Debt Securities 14,767 [3] 23,117
Commercial Mortgage Backed Securities [Member]
    
Available-for-sale Securities, Debt Maturities, Amortized Cost Basis [Abstract]    
Available-for-sale Securities, Debt Maturities, within One Year, Amortized Cost Basis 227  
Available For Sale Securities Debt Maturities, Yield, Within One Year 4.90% [2]  
Available-for-sale Securities, Debt Maturities, after One Through Five Years, Amortized Cost Basis 4,484  
Available-for-sale Securities, Debt Maturities, Yield, after One Through Five Years 6.80% [2]  
Available-for-sale Securities, Debt Maturities, after Five Through Ten Years, Amortized Cost Basis 64  
Available-for-sale Securities, Debt Maturities, Yield, after Five Through Ten Years 6.80% [2]  
Available-for-sale Securities, Debt Maturities, after Ten Years, Amortized Cost Basis 119  
Available-for-sale Securities, Debt Maturities, Yield, after Ten Years 7.60% [2]  
Available-for-sale Securities, Amortized Cost 4,894 6,167
Available-for-sale Securities, Debt Maturities, Yield 6.80% [2]  
Available-for-sale Securities, Debt Maturities, Fair Value [Abstract]    
Available-for-sale Securities, Debt Maturities, within One Year, Fair Value 229  
Available-for-sale Securities, Debt Maturities, after One Through Five Years, Fair Value 5,079  
Available-for-sale Securities, Debt Maturities, after Five Through Ten Years, Fair Value 72  
Available-for-sale Securities, Debt Maturities, after Ten Years, Fair Value 142  
AFS Debt Securities 5,522 6,852
Foreign Securities [Member]
    
Available-for-sale Securities, Debt Maturities, Amortized Cost Basis [Abstract]    
Available-for-sale Securities, Debt Maturities, within One Year, Amortized Cost Basis 2,271  
Available For Sale Securities Debt Maturities, Yield, Within One Year 0.50% [2]  
Available-for-sale Securities, Debt Maturities, after One Through Five Years, Amortized Cost Basis 2,429  
Available-for-sale Securities, Debt Maturities, Yield, after One Through Five Years 4.80% [2]  
Available-for-sale Securities, Debt Maturities, after Five Through Ten Years, Amortized Cost Basis 172  
Available-for-sale Securities, Debt Maturities, Yield, after Five Through Ten Years 2.50% [2]  
Available-for-sale Securities, Amortized Cost 4,872  
Available-for-sale Securities, Debt Maturities, Yield 4.70% [2]  
Available-for-sale Securities, Debt Maturities, Fair Value [Abstract]    
Available-for-sale Securities, Debt Maturities, within One Year, Fair Value 2,270  
Available-for-sale Securities, Debt Maturities, after One Through Five Years, Fair Value 2,476  
Available-for-sale Securities, Debt Maturities, after Five Through Ten Years, Fair Value 174  
AFS Debt Securities 4,920  
Corporate Bond Securities [Member]
    
Available-for-sale Securities, Debt Maturities, Amortized Cost Basis [Abstract]    
Available-for-sale Securities, Debt Maturities, within One Year, Amortized Cost Basis 586  
Available For Sale Securities Debt Maturities, Yield, Within One Year 1.70% [2]  
Available-for-sale Securities, Debt Maturities, after One Through Five Years, Amortized Cost Basis 1,353  
Available-for-sale Securities, Debt Maturities, Yield, after One Through Five Years 2.10% [2]  
Available-for-sale Securities, Debt Maturities, after Five Through Ten Years, Amortized Cost Basis 901  
Available-for-sale Securities, Debt Maturities, Yield, after Five Through Ten Years 2.40% [2]  
Available-for-sale Securities, Debt Maturities, after Ten Years, Amortized Cost Basis 153  
Available-for-sale Securities, Debt Maturities, Yield, after Ten Years 1.20% [2]  
Available-for-sale Securities, Amortized Cost 2,993 5,157
Available-for-sale Securities, Debt Maturities, Yield 2.10% [2]  
Available-for-sale Securities, Debt Maturities, Fair Value [Abstract]    
Available-for-sale Securities, Debt Maturities, within One Year, Fair Value 590  
Available-for-sale Securities, Debt Maturities, after One Through Five Years, Fair Value 1,354  
Available-for-sale Securities, Debt Maturities, after Five Through Ten Years, Fair Value 945  
Available-for-sale Securities, Debt Maturities, after Ten Years, Fair Value 146  
AFS Debt Securities 3,035 5,291
Other Debt Obligations [Member]
    
Available-for-sale Securities, Debt Maturities, Amortized Cost Basis [Abstract]    
Available-for-sale Securities, Debt Maturities, within One Year, Amortized Cost Basis 2,228  
Available For Sale Securities Debt Maturities, Yield, Within One Year 1.20% [2]  
Available-for-sale Securities, Debt Maturities, after One Through Five Years, Amortized Cost Basis 7,364  
Available-for-sale Securities, Debt Maturities, Yield, after One Through Five Years 1.30% [2]  
Available-for-sale Securities, Debt Maturities, after Five Through Ten Years, Amortized Cost Basis 1,811  
Available-for-sale Securities, Debt Maturities, Yield, after Five Through Ten Years 1.90% [2]  
Available-for-sale Securities, Debt Maturities, after Ten Years, Amortized Cost Basis 1,486  
Available-for-sale Securities, Debt Maturities, Yield, after Ten Years 1.10% [2]  
Available-for-sale Securities, Amortized Cost 12,889 15,514
Available-for-sale Securities, Debt Maturities, Yield 1.40% [2]  
Available-for-sale Securities, Debt Maturities, Fair Value [Abstract]    
Available-for-sale Securities, Debt Maturities, within One Year, Fair Value 2,228  
Available-for-sale Securities, Debt Maturities, after One Through Five Years, Fair Value 7,373  
Available-for-sale Securities, Debt Maturities, after Five Through Ten Years, Fair Value 1,796  
Available-for-sale Securities, Debt Maturities, after Ten Years, Fair Value 1,481  
AFS Debt Securities 12,878 15,392
Taxable Securities [Member]
    
Available-for-sale Securities, Debt Maturities, Amortized Cost Basis [Abstract]    
Available-for-sale Securities, Debt Maturities, within One Year, Amortized Cost Basis 8,707  
Available For Sale Securities Debt Maturities, Yield, Within One Year 2.37% [2]  
Available-for-sale Securities, Debt Maturities, after One Through Five Years, Amortized Cost Basis 116,681  
Available-for-sale Securities, Debt Maturities, Yield, after One Through Five Years 3.25% [2]  
Available-for-sale Securities, Debt Maturities, after Five Through Ten Years, Amortized Cost Basis 74,392  
Available-for-sale Securities, Debt Maturities, Yield, after Five Through Ten Years 3.65% [2]  
Available-for-sale Securities, Debt Maturities, after Ten Years, Amortized Cost Basis 66,714  
Available-for-sale Securities, Debt Maturities, Yield, after Ten Years 2.93% [2]  
Available-for-sale Securities, Amortized Cost 266,494 330,811
Available-for-sale Securities, Debt Maturities, Yield 3.29% [2]  
Available-for-sale Securities, Debt Maturities, Fair Value [Abstract]    
Available-for-sale Securities, Debt Maturities, within One Year, Fair Value 8,694  
Available-for-sale Securities, Debt Maturities, after One Through Five Years, Fair Value 119,068  
Available-for-sale Securities, Debt Maturities, after Five Through Ten Years, Fair Value 77,299  
Available-for-sale Securities, Debt Maturities, after Ten Years, Fair Value 66,487  
AFS Debt Securities 271,548 332,130
Tax-exempt securities [Member]
    
Available-for-sale Securities, Debt Maturities, Amortized Cost Basis [Abstract]    
Available-for-sale Securities, Debt Maturities, within One Year, Amortized Cost Basis 54  
Available For Sale Securities Debt Maturities, Yield, Within One Year 2.40% [2]  
Available-for-sale Securities, Debt Maturities, after One Through Five Years, Amortized Cost Basis 1,046  
Available-for-sale Securities, Debt Maturities, Yield, after One Through Five Years 1.80% [2]  
Available-for-sale Securities, Debt Maturities, after Five Through Ten Years, Amortized Cost Basis 857  
Available-for-sale Securities, Debt Maturities, Yield, after Five Through Ten Years 2.40% [2]  
Available-for-sale Securities, Debt Maturities, after Ten Years, Amortized Cost Basis 2,721  
Available-for-sale Securities, Debt Maturities, Yield, after Ten Years 0.30% [2]  
Available-for-sale Securities, Amortized Cost 4,678 5,687
Available-for-sale Securities, Debt Maturities, Yield 1.04% [2]  
Available-for-sale Securities, Debt Maturities, Fair Value [Abstract]    
Available-for-sale Securities, Debt Maturities, within One Year, Fair Value 54  
Available-for-sale Securities, Debt Maturities, after One Through Five Years, Fair Value 1,040  
Available-for-sale Securities, Debt Maturities, after Five Through Ten Years, Fair Value 853  
Available-for-sale Securities, Debt Maturities, after Ten Years, Fair Value 2,656  
AFS Debt Securities $ 4,603 $ 5,497
[1] Substantially all U.S. agency securities.
[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.
[3] At December 31, 2011 and 2010, includes approximately 89 percent and 90 percent prime bonds, nine percent and eight percent Alt-A bonds and two percent subprime bonds.