Quarterly report pursuant to Section 13 or 15(d)

Securities - Expected Maturity (Details)

v2.4.0.6
Securities - Expected Maturity (Details) (USD $)
In Millions, unless otherwise specified
Mar. 31, 2012
Dec. 31, 2011
Available-for-sale Securities, Debt Maturities, Amortized Cost Basis [Abstract]    
Available-for-sale Securities, Amortized Cost   $ 271,172
Held-to-maturity Securities, Debt Maturities, Net Carrying Amount [Abstract]    
Held-to-maturity Securities, Debt Maturities, within One Year, Net Carrying Amount 57 [1]  
Held-to-maturity Securities, Debt Maturities, Yield, within One Year 1.80% [1],[2]  
Held-to-maturity Securities, Debt Maturities, after One Through Five Years, Net Carrying Amount 3,871 [1]  
Held-to-maturity Securities, Debt Maturities, Yield, after One Through Five Years 3.00% [1],[2]  
Held-to-maturity Securities, Debt Maturities, after Five Through Ten Years, Net Carrying Amount 7,603 [1]  
Held-to-maturity Securities, Debt Maturities, Yield, after Five Through Ten Years 3.00% [1],[2]  
Held-to-maturity Securities, Debt Maturities, after Ten Years, Net Carrying Amount 22,674 [1]  
Held-to-maturity Securities, Debt Maturities, Yield, after Ten Years 3.10% [1],[2]  
Held-to-maturity Securities, Debt Maturities, Net Carrying Amount 34,205 [1]  
Held-to-maturity Securities, Debt Maturities, Yield 3.10% [1],[2]  
Available-for-sale Securities, Debt Maturities, Fair Value [Abstract]    
AFS Debt Securities 297,040 276,151
Held-to-maturity Securities, Debt Maturities, Fair Value [Abstract]    
Held-to-maturity Securities, Debt Maturities, within One Year, Fair Value 57 [1]  
Held-to-maturity Securities, Debt Maturities, after One Through Five Years, Fair Value 3,876 [1]  
Held-to-maturity Securities, Debt Maturities, after Five Through Ten Years, Fair Value 7,634 [1]  
Held-to-maturity Securities, Debt Maturities, after Ten Years, Fair Value 22,873 [1]  
Held-to-maturity Securities, Debt Maturities, Fair Value 34,440 [1]  
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 7,671  
Available For Sale Securities Debt Maturities, Yield, Within One Year 1.69% [2]  
Available-for-sale Securities, Debt Maturities, after One Through Five Years, Amortized Cost Basis 98,868  
Available-for-sale Securities, Debt Maturities, Yield, after One Through Five Years 3.17% [2]  
Available-for-sale Securities, Debt Maturities, after Five Through Ten Years, Amortized Cost Basis 97,520  
Available-for-sale Securities, Debt Maturities, Yield, after Five Through Ten Years 3.68% [2]  
Available-for-sale Securities, Debt Maturities, after Ten Years, Amortized Cost Basis 89,497  
Available-for-sale Securities, Debt Maturities, Yield, after Ten Years 3.06% [2]  
Available-for-sale Securities, Amortized Cost 293,556  
Available-for-sale Securities, Debt Maturities, Yield 3.33% [2]  
Available-for-sale Securities, Debt Maturities, Fair Value [Abstract]    
Available-for-sale Securities, Debt Maturities, within One Year, Fair Value 7,525  
Available-for-sale Securities, Debt Maturities, after One Through Five Years, Fair Value 100,815  
Available-for-sale Securities, Debt Maturities, after Five Through Ten Years, Fair Value 99,785  
Available-for-sale Securities, Debt Maturities, after Ten Years, Fair Value 88,915  
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 7,629  
Available For Sale Securities Debt Maturities, Yield, Within One Year 1.69% [2]  
Available-for-sale Securities, Debt Maturities, after One Through Five Years, Amortized Cost Basis 97,951  
Available-for-sale Securities, Debt Maturities, Yield, after One Through Five Years 3.18% [2]  
Available-for-sale Securities, Debt Maturities, after Five Through Ten Years, Amortized Cost Basis 96,689  
Available-for-sale Securities, Debt Maturities, Yield, after Five Through Ten Years 3.69% [2]  
Available-for-sale Securities, Debt Maturities, after Ten Years, Amortized Cost Basis 87,593  
Available-for-sale Securities, Debt Maturities, Yield, after Ten Years 3.12% [2]  
Available-for-sale Securities, Amortized Cost 289,862 266,494
Available-for-sale Securities, Debt Maturities, Yield 3.35% [2]  
Available-for-sale Securities, Debt Maturities, Fair Value [Abstract]    
Available-for-sale Securities, Debt Maturities, within One Year, Fair Value 7,482  
Available-for-sale Securities, Debt Maturities, after One Through Five Years, Fair Value 99,897  
Available-for-sale Securities, Debt Maturities, after Five Through Ten Years, Fair Value 98,954  
Available-for-sale Securities, Debt Maturities, after Ten Years, Fair Value 87,054  
AFS Debt Securities 293,387 271,548
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 505  
Available For Sale Securities Debt Maturities, Yield, Within One Year 0.10% [2]  
Available-for-sale Securities, Debt Maturities, after One Through Five Years, Amortized Cost Basis 796  
Available-for-sale Securities, Debt Maturities, Yield, after One Through Five Years 0.90% [2]  
Available-for-sale Securities, Debt Maturities, after Five Through Ten Years, Amortized Cost Basis 2,382  
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 36,926  
Available-for-sale Securities, Debt Maturities, Yield, after Ten Years 3.10% [2]  
Available-for-sale Securities, Debt Maturities, Yield 3.20% [2]  
Available-for-sale Securities, Debt Maturities, Fair Value [Abstract]    
Available-for-sale Securities, Debt Maturities, within One Year, Fair Value 506  
Available-for-sale Securities, Debt Maturities, after One Through Five Years, Fair Value 820  
Available-for-sale Securities, Debt Maturities, after Five Through Ten Years, Fair Value 2,573  
Available-for-sale Securities, Debt Maturities, after Ten Years, Fair Value 36,067  
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 31  
Available For Sale Securities Debt Maturities, Yield, Within One Year 4.60% [2]  
Available-for-sale Securities, Debt Maturities, after One Through Five Years, Amortized Cost Basis 56,137  
Available-for-sale Securities, Debt Maturities, Yield, after One Through Five Years 3.40% [2]  
Available-for-sale Securities, Debt Maturities, after Five Through Ten Years, Amortized Cost Basis 67,526  
Available-for-sale Securities, Debt Maturities, Yield, after Five Through Ten Years 3.50% [2]  
Available-for-sale Securities, Debt Maturities, after Ten Years, Amortized Cost Basis 48,641  
Available-for-sale Securities, Debt Maturities, Yield, after Ten Years 3.20% [2]  
Available-for-sale Securities, Amortized Cost 172,335 138,073
Available-for-sale Securities, Debt Maturities, Yield 3.40% [2]  
Available-for-sale Securities, Debt Maturities, Fair Value [Abstract]    
Available-for-sale Securities, Debt Maturities, within One Year, Fair Value 32  
Available-for-sale Securities, Debt Maturities, after One Through Five Years, Fair Value 57,128  
Available-for-sale Securities, Debt Maturities, after Five Through Ten Years, Fair Value 68,940  
Available-for-sale Securities, Debt Maturities, after Ten Years, Fair Value 48,991  
AFS Debt Securities 175,091 142,563
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 54  
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 20,917  
Available-for-sale Securities, Debt Maturities, Yield, after One Through Five Years 1.90% [2]  
Available-for-sale Securities, Debt Maturities, after Five Through Ten Years, Amortized Cost Basis 20,708  
Available-for-sale Securities, Debt Maturities, Yield, after Five Through Ten Years 4.20% [2]  
Available-for-sale Securities, Debt Maturities, after Ten Years, Amortized Cost Basis 19  
Available-for-sale Securities, Debt Maturities, Yield, after Ten Years 1.00% [2]  
Available-for-sale Securities, Amortized Cost 41,698 44,392
Available-for-sale Securities, Debt Maturities, Yield 3.00% [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 20,931  
Available-for-sale Securities, Debt Maturities, after Five Through Ten Years, Fair Value 21,351  
Available-for-sale Securities, Debt Maturities, after Ten Years, Fair Value 19  
AFS Debt Securities 42,355 44,999
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 1,164  
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 6,531  
Available-for-sale Securities, Debt Maturities, Yield, after One Through Five Years 4.60% [2]  
Available-for-sale Securities, Debt Maturities, after Five Through Ten Years, Amortized Cost Basis 3,266  
Available-for-sale Securities, Debt Maturities, Yield, after Five Through Ten Years 4.30% [2]  
Available-for-sale Securities, Debt Maturities, after Ten Years, Amortized Cost Basis 437  
Available-for-sale Securities, Debt Maturities, Yield, after Ten Years 3.30% [2]  
Available-for-sale Securities, Amortized Cost 11,398 [3] 14,948 [3]
Available-for-sale Securities, Debt Maturities, Yield 4.50% [2]  
Available-for-sale Securities, Debt Maturities, Fair Value [Abstract]    
Available-for-sale Securities, Debt Maturities, within One Year, Fair Value 1,157  
Available-for-sale Securities, Debt Maturities, after One Through Five Years, Fair Value 6,645  
Available-for-sale Securities, Debt Maturities, after Five Through Ten Years, Fair Value 3,243  
Available-for-sale Securities, Debt Maturities, after Ten Years, Fair Value 425  
AFS Debt Securities 11,470 [3] 14,767 [3]
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 156  
Available For Sale Securities Debt Maturities, Yield, Within One Year 5.10% [2]  
Available-for-sale Securities, Debt Maturities, after One Through Five Years, Amortized Cost Basis 4,061  
Available-for-sale Securities, Debt Maturities, Yield, after One Through Five Years 6.70% [2]  
Available-for-sale Securities, Debt Maturities, after Five Through Ten Years, Amortized Cost Basis 60  
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 56  
Available-for-sale Securities, Debt Maturities, Yield, after Ten Years 4.80% [2]  
Available-for-sale Securities, Amortized Cost 4,333 4,894
Available-for-sale Securities, Debt Maturities, Yield 6.60% [2]  
Available-for-sale Securities, Debt Maturities, Fair Value [Abstract]    
Available-for-sale Securities, Debt Maturities, within One Year, Fair Value 158  
Available-for-sale Securities, Debt Maturities, after One Through Five Years, Fair Value 4,615  
Available-for-sale Securities, Debt Maturities, after Five Through Ten Years, Fair Value 69  
Available-for-sale Securities, Debt Maturities, after Ten Years, Fair Value 57  
AFS Debt Securities 4,899 5,522
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 3,945  
Available For Sale Securities Debt Maturities, Yield, Within One Year 0.90% [2]  
Available-for-sale Securities, Debt Maturities, after One Through Five Years, Amortized Cost Basis 2,364  
Available-for-sale Securities, Debt Maturities, Yield, after One Through Five Years 4.90% [2]  
Available-for-sale Securities, Debt Maturities, after Five Through Ten Years, Amortized Cost Basis 220  
Available-for-sale Securities, Debt Maturities, Yield, after Five Through Ten Years 2.70% [2]  
Available-for-sale Securities, Debt Maturities, after Ten Years, Amortized Cost Basis 1  
Available-for-sale Securities, Debt Maturities, Yield, after Ten Years 6.90% [2]  
Available-for-sale Securities, Amortized Cost 6,530  
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 3,795  
Available-for-sale Securities, Debt Maturities, after One Through Five Years, Fair Value 2,545  
Available-for-sale Securities, Debt Maturities, after Five Through Ten Years, Fair Value 227  
Available-for-sale Securities, Debt Maturities, after Ten Years, Fair Value 1  
AFS Debt Securities 6,568  
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 583  
Available For Sale Securities Debt Maturities, Yield, Within One Year 1.80% [2]  
Available-for-sale Securities, Debt Maturities, after One Through Five Years, Amortized Cost Basis 1,245  
Available-for-sale Securities, Debt Maturities, Yield, after One Through Five Years 1.90% [2]  
Available-for-sale Securities, Debt Maturities, after Five Through Ten Years, Amortized Cost Basis 397  
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 139  
Available-for-sale Securities, Debt Maturities, Yield, after Ten Years 1.00% [2]  
Available-for-sale Securities, Amortized Cost 2,364 2,993
Available-for-sale Securities, Debt Maturities, Yield 1.90% [2]  
Available-for-sale Securities, Debt Maturities, Fair Value [Abstract]    
Available-for-sale Securities, Debt Maturities, within One Year, Fair Value 588  
Available-for-sale Securities, Debt Maturities, after One Through Five Years, Fair Value 1,268  
Available-for-sale Securities, Debt Maturities, after Five Through Ten Years, Fair Value 433  
Available-for-sale Securities, Debt Maturities, after Ten Years, Fair Value 132  
AFS Debt Securities 2,421 3,035
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 1,191  
Available For Sale Securities Debt Maturities, Yield, Within One Year 1.30% [2]  
Available-for-sale Securities, Debt Maturities, after One Through Five Years, Amortized Cost Basis 5,900  
Available-for-sale Securities, Debt Maturities, Yield, after One Through Five Years 1.50% [2]  
Available-for-sale Securities, Debt Maturities, after Five Through Ten Years, Amortized Cost Basis 2,130  
Available-for-sale Securities, Debt Maturities, Yield, after Five Through Ten Years 2.00% [2]  
Available-for-sale Securities, Debt Maturities, after Ten Years, Amortized Cost Basis 1,374  
Available-for-sale Securities, Debt Maturities, Yield, after Ten Years 1.00% [2]  
Available-for-sale Securities, Amortized Cost 10,595 12,889
Available-for-sale Securities, Debt Maturities, Yield 1.50% [2]  
Available-for-sale Securities, Debt Maturities, Fair Value [Abstract]    
Available-for-sale Securities, Debt Maturities, within One Year, Fair Value 1,192  
Available-for-sale Securities, Debt Maturities, after One Through Five Years, Fair Value 5,945  
Available-for-sale Securities, Debt Maturities, after Five Through Ten Years, Fair Value 2,118  
Available-for-sale Securities, Debt Maturities, after Ten Years, Fair Value 1,362  
AFS Debt Securities 10,617 12,878
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 42  
Available For Sale Securities Debt Maturities, Yield, Within One Year 2.20% [2]  
Available-for-sale Securities, Debt Maturities, after One Through Five Years, Amortized Cost Basis 917  
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 831  
Available-for-sale Securities, Debt Maturities, Yield, after Five Through Ten Years 2.50% [2]  
Available-for-sale Securities, Debt Maturities, after Ten Years, Amortized Cost Basis 1,904  
Available-for-sale Securities, Debt Maturities, Yield, after Ten Years 0.30% [2]  
Available-for-sale Securities, Amortized Cost 3,694 4,678
Available-for-sale Securities, Debt Maturities, Yield 1.19% [2]  
Available-for-sale Securities, Debt Maturities, Fair Value [Abstract]    
Available-for-sale Securities, Debt Maturities, within One Year, Fair Value 43  
Available-for-sale Securities, Debt Maturities, after One Through Five Years, Fair Value 918  
Available-for-sale Securities, Debt Maturities, after Five Through Ten Years, Fair Value 831  
Available-for-sale Securities, Debt Maturities, after Ten Years, Fair Value 1,861  
AFS Debt Securities $ 3,653 $ 4,603
[1] Substantially all U.S. agency mortgage-backed 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 March 31, 2012, includes approximately 92 percent prime bonds, six percent Alt-A bonds and two percent subprime bonds. At December 31, 2011, includes approximately 89 percent prime bonds, nine percent Alt-A bonds and two percent subprime bonds.