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
Jun. 30, 2012
Dec. 31, 2011
Held-to-maturity Securities, Debt Maturities, Net Carrying Amount [Abstract]    
Held-to-maturity Securities, Debt Maturities, within One Year, Net Carrying Amount $ 6 [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 5,230 [1]  
Held-to-maturity Securities, Debt Maturities, Yield, after One Through Five Years 2.20% [1],[2]  
Held-to-maturity Securities, Debt Maturities, after Five Through Ten Years, Net Carrying Amount 23,588 [1]  
Held-to-maturity Securities, Debt Maturities, Yield, after Five Through Ten Years 2.70% [1],[2]  
Held-to-maturity Securities, Debt Maturities, after Ten Years, Net Carrying Amount 6,344 [1]  
Held-to-maturity Securities, Debt Maturities, Yield, after Ten Years 2.80% [1],[2]  
Held-to-maturity Securities, Debt Maturities, Net Carrying Amount 35,168 [1]  
Held-to-maturity Securities, Debt Maturities, Yield 2.60% [1],[2]  
Available-for-sale Securities, Debt Maturities, Fair Value [Abstract]    
AFS Debt Securities 300,049 276,151
Held-to-maturity Securities, Debt Maturities, Fair Value [Abstract]    
Held-to-maturity Securities, Debt Maturities, within One Year, Fair Value 6 [1]  
Held-to-maturity Securities, Debt Maturities, after One Through Five Years, Fair Value 5,311 [1]  
Held-to-maturity Securities, Debt Maturities, after Five Through Ten Years, Fair Value 24,202 [1]  
Held-to-maturity Securities, Debt Maturities, after Ten Years, Fair Value 6,475 [1]  
Held-to-maturity Securities, Debt Maturities, Fair Value 35,994 [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 7,858  
Available For Sale Securities Debt Maturities, Yield, Within One Year 1.67% [2]  
Available-for-sale Securities, Debt Maturities, after One Through Five Years, Amortized Cost Basis 102,169  
Available-for-sale Securities, Debt Maturities, Yield, after One Through Five Years 3.05% [2]  
Available-for-sale Securities, Debt Maturities, after Five Through Ten Years, Amortized Cost Basis 86,103  
Available-for-sale Securities, Debt Maturities, Yield, after Five Through Ten Years 3.48% [2]  
Available-for-sale Securities, Debt Maturities, after Ten Years, Amortized Cost Basis 98,054  
Available-for-sale Securities, Debt Maturities, Yield, after Ten Years 2.73% [2]  
Available-for-sale Securities, Amortized Cost 294,184  
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 7,865  
Available-for-sale Securities, Debt Maturities, after One Through Five Years, Fair Value 104,579  
Available-for-sale Securities, Debt Maturities, after Five Through Ten Years, Fair Value 88,674  
Available-for-sale Securities, Debt Maturities, after Ten Years, Fair Value 98,931  
AFS Debt Securities 300,049  
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 7,841  
Available For Sale Securities Debt Maturities, Yield, Within One Year 1.66% [2]  
Available-for-sale Securities, Debt Maturities, after One Through Five Years, Amortized Cost Basis 101,268  
Available-for-sale Securities, Debt Maturities, Yield, after One Through Five Years 3.07% [2]  
Available-for-sale Securities, Debt Maturities, after Five Through Ten Years, Amortized Cost Basis 85,294  
Available-for-sale Securities, Debt Maturities, Yield, after Five Through Ten Years 3.49% [2]  
Available-for-sale Securities, Debt Maturities, after Ten Years, Amortized Cost Basis 96,919  
Available-for-sale Securities, Debt Maturities, Yield, after Ten Years 2.76% [2]  
Available-for-sale Securities, Amortized Cost 291,322 266,494
Available-for-sale Securities, Debt Maturities, Yield 3.02% [2]  
Available-for-sale Securities, Debt Maturities, Fair Value [Abstract]    
Available-for-sale Securities, Debt Maturities, within One Year, Fair Value 7,848  
Available-for-sale Securities, Debt Maturities, after One Through Five Years, Fair Value 103,678  
Available-for-sale Securities, Debt Maturities, after Five Through Ten Years, Fair Value 87,864  
Available-for-sale Securities, Debt Maturities, after Ten Years, Fair Value 97,832  
AFS Debt Securities 297,222 271,548
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 511  
Available For Sale Securities Debt Maturities, Yield, Within One Year 0.01% [2]  
Available-for-sale Securities, Debt Maturities, after One Through Five Years, Amortized Cost Basis 745  
Available-for-sale Securities, Debt Maturities, Yield, after One Through Five Years 1.00% [2]  
Available-for-sale Securities, Debt Maturities, after Five Through Ten Years, Amortized Cost Basis 2,138  
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 26,640  
Available-for-sale Securities, Debt Maturities, Yield, after Ten Years 2.50% [2]  
Available-for-sale Securities, Amortized Cost 30,034  
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 513  
Available-for-sale Securities, Debt Maturities, after One Through Five Years, Fair Value 773  
Available-for-sale Securities, Debt Maturities, after Five Through Ten Years, Fair Value 2,345  
Available-for-sale Securities, Debt Maturities, after Ten Years, Fair Value 26,200  
AFS Debt Securities 29,831  
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 4.40% [2]  
Available-for-sale Securities, Debt Maturities, after One Through Five Years, Amortized Cost Basis 65,333  
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 55,484  
Available-for-sale Securities, Debt Maturities, Yield, after Five Through Ten Years 3.20% [2]  
Available-for-sale Securities, Debt Maturities, after Ten Years, Amortized Cost Basis 68,319  
Available-for-sale Securities, Debt Maturities, Yield, after Ten Years 2.90% [2]  
Available-for-sale Securities, Amortized Cost 189,167 138,073
Available-for-sale Securities, Debt Maturities, Yield 3.10% [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 67,155  
Available-for-sale Securities, Debt Maturities, after Five Through Ten Years, Fair Value 57,249  
Available-for-sale Securities, Debt Maturities, after Ten Years, Fair Value 69,755  
AFS Debt Securities 194,191 142,563
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 84  
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 16,481  
Available-for-sale Securities, Debt Maturities, Yield, after One Through Five Years 1.40% [2]  
Available-for-sale Securities, Debt Maturities, after Five Through Ten Years, Amortized Cost Basis 21,970  
Available-for-sale Securities, Debt Maturities, Yield, after Five Through Ten Years 4.10% [2]  
Available-for-sale Securities, Debt Maturities, after Ten Years, Amortized Cost Basis 18  
Available-for-sale Securities, Debt Maturities, Yield, after Ten Years 1.00% [2]  
Available-for-sale Securities, Amortized Cost 38,553 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 84  
Available-for-sale Securities, Debt Maturities, after One Through Five Years, Fair Value 16,471  
Available-for-sale Securities, Debt Maturities, after Five Through Ten Years, Fair Value 22,576  
Available-for-sale Securities, Debt Maturities, after Ten Years, Fair Value 18  
AFS Debt Securities 39,149 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 1,149  
Available For Sale Securities Debt Maturities, Yield, Within One Year 4.80% [2]  
Available-for-sale Securities, Debt Maturities, after One Through Five Years, Amortized Cost Basis 5,889  
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 3,060  
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 416  
Available-for-sale Securities, Debt Maturities, Yield, after Ten Years 3.30% [2]  
Available-for-sale Securities, Amortized Cost 10,514 [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 1,139  
Available-for-sale Securities, Debt Maturities, after One Through Five Years, Fair Value 5,953  
Available-for-sale Securities, Debt Maturities, after Five Through Ten Years, Fair Value 3,009  
Available-for-sale Securities, Debt Maturities, after Ten Years, Fair Value 414  
AFS Debt Securities 10,515 [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 275  
Available For Sale Securities Debt Maturities, Yield, Within One Year 5.60% [2]  
Available-for-sale Securities, Debt Maturities, after One Through Five Years, Amortized Cost Basis 3,439  
Available-for-sale Securities, Debt Maturities, Yield, after One Through Five Years 5.90% [2]  
Available-for-sale Securities, Debt Maturities, after Five Through Ten Years, Amortized Cost Basis 16  
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 21  
Available-for-sale Securities, Debt Maturities, Yield, after Ten Years 5.10% [2]  
Available-for-sale Securities, Amortized Cost 3,751 4,894
Available-for-sale Securities, Debt Maturities, Yield 5.90% [2]  
Available-for-sale Securities, Debt Maturities, Fair Value [Abstract]    
Available-for-sale Securities, Debt Maturities, within One Year, Fair Value 285  
Available-for-sale Securities, Debt Maturities, after One Through Five Years, Fair Value 3,804  
Available-for-sale Securities, Debt Maturities, after Five Through Ten Years, Fair Value 17  
Available-for-sale Securities, Debt Maturities, after Ten Years, Fair Value 21  
AFS Debt Securities 4,127 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 3,715  
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 1,855  
Available-for-sale Securities, Debt Maturities, Yield, after One Through Five Years 6.10% [2]  
Available-for-sale Securities, Debt Maturities, after Five Through Ten Years, Amortized Cost Basis 166  
Available-for-sale Securities, Debt Maturities, Yield, after Five Through Ten Years 2.30% [2]  
Available-for-sale Securities, Amortized Cost 5,736  
Available-for-sale Securities, Debt Maturities, Yield 2.60% [2]  
Available-for-sale Securities, Debt Maturities, Fair Value [Abstract]    
Available-for-sale Securities, Debt Maturities, within One Year, Fair Value 3,710  
Available-for-sale Securities, Debt Maturities, after One Through Five Years, Fair Value 1,887  
Available-for-sale Securities, Debt Maturities, after Five Through Ten Years, Fair Value 168  
AFS Debt Securities 5,765  
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 555  
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 1,007  
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 385  
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 126  
Available-for-sale Securities, Debt Maturities, Yield, after Ten Years 1.00% [2]  
Available-for-sale Securities, Amortized Cost 2,073 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 559  
Available-for-sale Securities, Debt Maturities, after One Through Five Years, Fair Value 1,025  
Available-for-sale Securities, Debt Maturities, after Five Through Ten Years, Fair Value 421  
Available-for-sale Securities, Debt Maturities, after Ten Years, Fair Value 117  
AFS Debt Securities 2,122 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 1,521  
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 6,519  
Available-for-sale Securities, Debt Maturities, Yield, after One Through Five Years 1.60% [2]  
Available-for-sale Securities, Debt Maturities, after Five Through Ten Years, Amortized Cost Basis 2,075  
Available-for-sale Securities, Debt Maturities, Yield, after Five Through Ten Years 1.60% [2]  
Available-for-sale Securities, Debt Maturities, after Ten Years, Amortized Cost Basis 1,379  
Available-for-sale Securities, Debt Maturities, Yield, after Ten Years 1.00% [2]  
Available-for-sale Securities, Amortized Cost 11,494 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 1,526  
Available-for-sale Securities, Debt Maturities, after One Through Five Years, Fair Value 6,610  
Available-for-sale Securities, Debt Maturities, after Five Through Ten Years, Fair Value 2,079  
Available-for-sale Securities, Debt Maturities, after Ten Years, Fair Value 1,307  
AFS Debt Securities 11,522 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 17  
Available For Sale Securities Debt Maturities, Yield, Within One Year 4.20% [2]  
Available-for-sale Securities, Debt Maturities, after One Through Five Years, Amortized Cost Basis 901  
Available-for-sale Securities, Debt Maturities, Yield, after One Through Five Years 1.70% [2]  
Available-for-sale Securities, Debt Maturities, after Five Through Ten Years, Amortized Cost Basis 809  
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 1,135  
Available-for-sale Securities, Debt Maturities, Yield, after Ten Years 0.30% [2]  
Available-for-sale Securities, Amortized Cost 2,862 4,678
Available-for-sale Securities, Debt Maturities, Yield 1.39% [2]  
Available-for-sale Securities, Debt Maturities, Fair Value [Abstract]    
Available-for-sale Securities, Debt Maturities, within One Year, Fair Value 17  
Available-for-sale Securities, Debt Maturities, after One Through Five Years, Fair Value 901  
Available-for-sale Securities, Debt Maturities, after Five Through Ten Years, Fair Value 810  
Available-for-sale Securities, Debt Maturities, after Ten Years, Fair Value 1,099  
AFS Debt Securities $ 2,827 $ 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 June 30, 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.