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Assets and Liabilities Measured at Fair Value on a Recurring Basis (Detail) (USD $)
In Millions, unless otherwise specified
Jun. 30, 2012
Dec. 31, 2011
Assets    
Loans Held-for-sale, Fair Value Disclosure $ 2,940 [1] $ 2,141 [1]
Fair Value, Measurements, Recurring [Member]
    
Assets    
Trading Account Assets, Fair Value Disclosure 6,327 6,279
Loans Held-for-sale, Fair Value Disclosure 2,940 2,141
Loans, Held for Investment, Fair Value Disclosure 406 433
Other intangible assets 865 921
Other assets 552 [2] 554 [2]
Liabilities    
Trading liabilities 1,782 1,806
Brokered deposits 914 1,018
Long-term debt 2,010 1,997
Other liabilities 109 [2],[3] 84 [2],[4]
Fair Value, Measurements, Recurring [Member] | Residential Mortgage, Loans Held For Sale [Member]
    
Assets    
Loans Held-for-sale, Fair Value Disclosure 2,618 1,826
Fair Value, Measurements, Recurring [Member] | Corporate and Other
    
Assets    
Loans Held-for-sale, Fair Value Disclosure 322 315
Fair Value, Measurements, Recurring [Member] | Fair Value Adjustments on Hedges and Derivative Contracts [Member]
    
Assets    
Trading Account Assets, Fair Value Disclosure (937) [5] (1,030) [6]
Liabilities    
Trading liabilities (1,208) [5] (1,170) [6]
Fair Value, Measurements, Recurring [Member] | Available-for-sale Securities [Member]
    
Assets    
Securities available for sale 24,409 28,117
Fair Value, Measurements, Recurring [Member] | Available-for-sale Securities [Member] | US Treasury Securities
    
Assets    
Securities available for sale 224 694
Fair Value, Measurements, Recurring [Member] | Available-for-sale Securities [Member] | US Government Agencies Debt Securities
    
Assets    
Securities available for sale 1,783 1,932
Fair Value, Measurements, Recurring [Member] | Available-for-sale Securities [Member] | US States and Political Subdivisions Debt Securities [Member]
    
Assets    
Securities available for sale 372 454
Fair Value, Measurements, Recurring [Member] | Available-for-sale Securities [Member] | Mortgage-backed Securities, Issued by US Government Sponsored Enterprises
    
Assets    
Securities available for sale 18,110 21,223
Fair Value, Measurements, Recurring [Member] | Available-for-sale Securities [Member] | Mortgage-backed Securities, Issued by Private Enterprises [Member]
    
Assets    
Securities available for sale 208 221
Fair Value, Measurements, Recurring [Member] | Available-for-sale Securities [Member] | Collateralized Debt Obligations [Member]
    
Assets    
Securities available for sale   50
Fair Value, Measurements, Recurring [Member] | Available-for-sale Securities [Member] | Asset-backed Securities [Member]
    
Assets    
Securities available for sale 348 464
Fair Value, Measurements, Recurring [Member] | Available-for-sale Securities [Member] | Corporate And Other Debt Securities [Member]
    
Assets    
Securities available for sale 45 51
Fair Value, Measurements, Recurring [Member] | Available-for-sale Securities [Member] | Equity Securities, Coca Cola
    
Assets    
Securities available for sale 2,346 2,099
Fair Value, Measurements, Recurring [Member] | Available-for-sale Securities [Member] | Equity Securities, Other [Member]
    
Assets    
Securities available for sale 973 [7] 929 [8]
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]
    
Assets    
Trading Account Assets, Fair Value Disclosure 424 541
Loans Held-for-sale, Fair Value Disclosure 0 0
Loans, Held for Investment, Fair Value Disclosure 0 0
Other intangible assets 0 0
Other assets 2 [2] 7 [2]
Liabilities    
Trading liabilities 352 780
Brokered deposits 0 0
Long-term debt 0 0
Other liabilities 1 [2],[3] 1 [2],[4]
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | US Treasury Securities
    
Assets    
Trading Account Assets, Fair Value Disclosure 125 144
Liabilities    
Trading liabilities 330 569
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | US Government Agencies Debt Securities
    
Assets    
Trading Account Assets, Fair Value Disclosure 0 0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | US States and Political Subdivisions Debt Securities [Member]
    
Assets    
Trading Account Assets, Fair Value Disclosure 0 0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Mortgage-backed Securities, Issued by US Government Sponsored Enterprises
    
Assets    
Trading Account Assets, Fair Value Disclosure 0 0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Mortgage-backed Securities, Issued by Private Enterprises [Member]
    
Assets    
Trading Account Assets, Fair Value Disclosure 0 0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Collateralized Debt Obligations [Member]
    
Assets    
Trading Account Assets, Fair Value Disclosure 0 0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Asset-backed Securities [Member]
    
Assets    
Trading Account Assets, Fair Value Disclosure 0 0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Corporate And Other Debt Securities [Member]
    
Assets    
Trading Account Assets, Fair Value Disclosure 0 0
Liabilities    
Trading liabilities 0 0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Commercial Paper
    
Assets    
Trading Account Assets, Fair Value Disclosure 0 0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Equity Securities
    
Assets    
Trading Account Assets, Fair Value Disclosure 91 91
Liabilities    
Trading liabilities 22 37
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Derivative Financial Instruments, Assets
    
Assets    
Trading Account Assets, Fair Value Disclosure 208 306
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Trading Loans
    
Assets    
Trading Account Assets, Fair Value Disclosure 0 0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Residential Mortgage, Loans Held For Sale [Member]
    
Assets    
Loans Held-for-sale, Fair Value Disclosure 0 0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Corporate and Other
    
Assets    
Loans Held-for-sale, Fair Value Disclosure 0 0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Derivative Financial Instruments, Liabilities [Member]
    
Liabilities    
Trading liabilities 0 174
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Available-for-sale Securities [Member]
    
Assets    
Securities available for sale 2,686 2,981
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Available-for-sale Securities [Member] | US Treasury Securities
    
Assets    
Securities available for sale 224 694
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Available-for-sale Securities [Member] | US Government Agencies Debt Securities
    
Assets    
Securities available for sale 0 0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Available-for-sale Securities [Member] | US States and Political Subdivisions Debt Securities [Member]
    
Assets    
Securities available for sale 0 0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Available-for-sale Securities [Member] | Mortgage-backed Securities, Issued by US Government Sponsored Enterprises
    
Assets    
Securities available for sale 0 0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Available-for-sale Securities [Member] | Mortgage-backed Securities, Issued by Private Enterprises [Member]
    
Assets    
Securities available for sale 0 0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Available-for-sale Securities [Member] | Collateralized Debt Obligations [Member]
    
Assets    
Securities available for sale   0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Available-for-sale Securities [Member] | Asset-backed Securities [Member]
    
Assets    
Securities available for sale 0 0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Available-for-sale Securities [Member] | Corporate And Other Debt Securities [Member]
    
Assets    
Securities available for sale 0 0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Available-for-sale Securities [Member] | Equity Securities, Coca Cola
    
Assets    
Securities available for sale 2,346 2,099
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Available-for-sale Securities [Member] | Equity Securities, Other [Member]
    
Assets    
Securities available for sale 116 [7] 188 [8]
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
    
Assets    
Trading Account Assets, Fair Value Disclosure 6,791 6,719
Loans Held-for-sale, Fair Value Disclosure 2,938 2,140
Loans, Held for Investment, Fair Value Disclosure 0 0
Other intangible assets 0 0
Other assets 415 [2] 463 [2]
Liabilities    
Trading liabilities 2,289 2,007
Brokered deposits 914 1,018
Long-term debt 2,010 1,997
Other liabilities 82 [2],[3] 61 [2],[4]
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | US Treasury Securities
    
Assets    
Trading Account Assets, Fair Value Disclosure 0 0
Liabilities    
Trading liabilities 0 0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | US Government Agencies Debt Securities
    
Assets    
Trading Account Assets, Fair Value Disclosure 521 478
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | US States and Political Subdivisions Debt Securities [Member]
    
Assets    
Trading Account Assets, Fair Value Disclosure 58 54
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Mortgage-backed Securities, Issued by US Government Sponsored Enterprises
    
Assets    
Trading Account Assets, Fair Value Disclosure 371 412
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Mortgage-backed Securities, Issued by Private Enterprises [Member]
    
Assets    
Trading Account Assets, Fair Value Disclosure 0 0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Collateralized Debt Obligations [Member]
    
Assets    
Trading Account Assets, Fair Value Disclosure 2 2
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Asset-backed Securities [Member]
    
Assets    
Trading Account Assets, Fair Value Disclosure 32 32
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Corporate And Other Debt Securities [Member]
    
Assets    
Trading Account Assets, Fair Value Disclosure 560 344
Liabilities    
Trading liabilities 301 77
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Commercial Paper
    
Assets    
Trading Account Assets, Fair Value Disclosure 113 229
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Equity Securities
    
Assets    
Trading Account Assets, Fair Value Disclosure 0 0
Liabilities    
Trading liabilities 0 0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Derivative Financial Instruments, Assets
    
Assets    
Trading Account Assets, Fair Value Disclosure 2,919 3,138
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Trading Loans
    
Assets    
Trading Account Assets, Fair Value Disclosure 2,215 2,030
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Residential Mortgage, Loans Held For Sale [Member]
    
Assets    
Loans Held-for-sale, Fair Value Disclosure 2,616 1,825
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Corporate and Other
    
Assets    
Loans Held-for-sale, Fair Value Disclosure 322 315
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Derivative Financial Instruments, Liabilities [Member]
    
Liabilities    
Trading liabilities 1,988 1,930
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Available-for-sale Securities [Member]
    
Assets    
Securities available for sale 20,581 24,095
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Available-for-sale Securities [Member] | US Treasury Securities
    
Assets    
Securities available for sale 0 0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Available-for-sale Securities [Member] | US Government Agencies Debt Securities
    
Assets    
Securities available for sale 1,783 1,932
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Available-for-sale Securities [Member] | US States and Political Subdivisions Debt Securities [Member]
    
Assets    
Securities available for sale 317 396
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Available-for-sale Securities [Member] | Mortgage-backed Securities, Issued by US Government Sponsored Enterprises
    
Assets    
Securities available for sale 18,110 21,223
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Available-for-sale Securities [Member] | Mortgage-backed Securities, Issued by Private Enterprises [Member]
    
Assets    
Securities available for sale 0 0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Available-for-sale Securities [Member] | Collateralized Debt Obligations [Member]
    
Assets    
Securities available for sale   50
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Available-for-sale Securities [Member] | Asset-backed Securities [Member]
    
Assets    
Securities available for sale 331 448
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Available-for-sale Securities [Member] | Corporate And Other Debt Securities [Member]
    
Assets    
Securities available for sale 40 46
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Available-for-sale Securities [Member] | Equity Securities, Coca Cola
    
Assets    
Securities available for sale 0 0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Available-for-sale Securities [Member] | Equity Securities, Other [Member]
    
Assets    
Securities available for sale 0 0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
    
Assets    
Trading Account Assets, Fair Value Disclosure 49 49
Loans Held-for-sale, Fair Value Disclosure 2 1
Loans, Held for Investment, Fair Value Disclosure 406 433
Other intangible assets 865 921
Other assets 135 [2] 84 [2]
Liabilities    
Trading liabilities 349 189
Brokered deposits 0 0
Long-term debt 0 0
Other liabilities 26 [2],[3] 22 [2],[4]
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | US Treasury Securities
    
Assets    
Trading Account Assets, Fair Value Disclosure 0 0
Liabilities    
Trading liabilities 0 0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | US Government Agencies Debt Securities
    
Assets    
Trading Account Assets, Fair Value Disclosure 0 0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | US States and Political Subdivisions Debt Securities [Member]
    
Assets    
Trading Account Assets, Fair Value Disclosure 0 0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Mortgage-backed Securities, Issued by US Government Sponsored Enterprises
    
Assets    
Trading Account Assets, Fair Value Disclosure 0 0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Mortgage-backed Securities, Issued by Private Enterprises [Member]
    
Assets    
Trading Account Assets, Fair Value Disclosure 1 1
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Collateralized Debt Obligations [Member]
    
Assets    
Trading Account Assets, Fair Value Disclosure 43 43
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Asset-backed Securities [Member]
    
Assets    
Trading Account Assets, Fair Value Disclosure 5 5
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Corporate And Other Debt Securities [Member]
    
Assets    
Trading Account Assets, Fair Value Disclosure 0 0
Liabilities    
Trading liabilities 0 0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Commercial Paper
    
Assets    
Trading Account Assets, Fair Value Disclosure 0 0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Equity Securities
    
Assets    
Trading Account Assets, Fair Value Disclosure 0 0
Liabilities    
Trading liabilities 0 0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Derivative Financial Instruments, Assets
    
Assets    
Trading Account Assets, Fair Value Disclosure 0 0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Trading Loans
    
Assets    
Trading Account Assets, Fair Value Disclosure 0 0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Residential Mortgage, Loans Held For Sale [Member]
    
Assets    
Loans Held-for-sale, Fair Value Disclosure 2 1
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Corporate and Other
    
Assets    
Loans Held-for-sale, Fair Value Disclosure 0 0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Derivative Financial Instruments, Liabilities [Member]
    
Liabilities    
Trading liabilities 349 189
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Available-for-sale Securities [Member]
    
Assets    
Securities available for sale 1,142 1,041
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Available-for-sale Securities [Member] | US Treasury Securities
    
Assets    
Securities available for sale 0 0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Available-for-sale Securities [Member] | US Government Agencies Debt Securities
    
Assets    
Securities available for sale 0 0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Available-for-sale Securities [Member] | US States and Political Subdivisions Debt Securities [Member]
    
Assets    
Securities available for sale 55 58
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Available-for-sale Securities [Member] | Mortgage-backed Securities, Issued by US Government Sponsored Enterprises
    
Assets    
Securities available for sale 0 0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Available-for-sale Securities [Member] | Mortgage-backed Securities, Issued by Private Enterprises [Member]
    
Assets    
Securities available for sale 208 221
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Available-for-sale Securities [Member] | Collateralized Debt Obligations [Member]
    
Assets    
Securities available for sale   0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Available-for-sale Securities [Member] | Asset-backed Securities [Member]
    
Assets    
Securities available for sale 17 16
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Available-for-sale Securities [Member] | Corporate And Other Debt Securities [Member]
    
Assets    
Securities available for sale 5 5
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Available-for-sale Securities [Member] | Equity Securities, Coca Cola
    
Assets    
Securities available for sale 0 0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Available-for-sale Securities [Member] | Equity Securities, Other [Member]
    
Assets    
Securities available for sale 857 [7] 741 [8]
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Available-for-sale Securities [Member] | Federal Home Loan Bank Stock and Federal Reserve Bank Stock [Member]
    
Assets    
Securities available for sale 856 [7] 740 [6]
Fair Value, Measurements, Recurring [Member] | Estimate of Fair Value, Fair Value Disclosure [Member]
    
Assets    
Trading Account Assets, Fair Value Disclosure 7,264 7,309
Liabilities    
Trading liabilities 2,990 2,976
Fair Value, Measurements, Recurring [Member] | Estimate of Fair Value, Fair Value Disclosure [Member] | US Treasury Securities
    
Assets    
Trading Account Assets, Fair Value Disclosure 125 144
Liabilities    
Trading liabilities 330 569
Fair Value, Measurements, Recurring [Member] | Estimate of Fair Value, Fair Value Disclosure [Member] | US Government Agencies Debt Securities
    
Assets    
Trading Account Assets, Fair Value Disclosure 521 478
Fair Value, Measurements, Recurring [Member] | Estimate of Fair Value, Fair Value Disclosure [Member] | US States and Political Subdivisions Debt Securities [Member]
    
Assets    
Trading Account Assets, Fair Value Disclosure 58 54
Fair Value, Measurements, Recurring [Member] | Estimate of Fair Value, Fair Value Disclosure [Member] | Mortgage-backed Securities, Issued by US Government Sponsored Enterprises
    
Assets    
Trading Account Assets, Fair Value Disclosure 371 412
Fair Value, Measurements, Recurring [Member] | Estimate of Fair Value, Fair Value Disclosure [Member] | Mortgage-backed Securities, Issued by Private Enterprises [Member]
    
Assets    
Trading Account Assets, Fair Value Disclosure 1 1
Fair Value, Measurements, Recurring [Member] | Estimate of Fair Value, Fair Value Disclosure [Member] | Collateralized Debt Obligations [Member]
    
Assets    
Trading Account Assets, Fair Value Disclosure 45 45
Fair Value, Measurements, Recurring [Member] | Estimate of Fair Value, Fair Value Disclosure [Member] | Asset-backed Securities [Member]
    
Assets    
Trading Account Assets, Fair Value Disclosure 37 37
Fair Value, Measurements, Recurring [Member] | Estimate of Fair Value, Fair Value Disclosure [Member] | Corporate And Other Debt Securities [Member]
    
Assets    
Trading Account Assets, Fair Value Disclosure 560 344
Liabilities    
Trading liabilities 301 77
Fair Value, Measurements, Recurring [Member] | Estimate of Fair Value, Fair Value Disclosure [Member] | Commercial Paper
    
Assets    
Trading Account Assets, Fair Value Disclosure 113 229
Fair Value, Measurements, Recurring [Member] | Estimate of Fair Value, Fair Value Disclosure [Member] | Equity Securities
    
Assets    
Trading Account Assets, Fair Value Disclosure 91 91
Liabilities    
Trading liabilities 22 37
Fair Value, Measurements, Recurring [Member] | Estimate of Fair Value, Fair Value Disclosure [Member] | Derivative Financial Instruments, Assets
    
Assets    
Trading Account Assets, Fair Value Disclosure 3,127 3,444
Fair Value, Measurements, Recurring [Member] | Estimate of Fair Value, Fair Value Disclosure [Member] | Trading Loans
    
Assets    
Trading Account Assets, Fair Value Disclosure 2,215 2,030
Fair Value, Measurements, Recurring [Member] | Estimate of Fair Value, Fair Value Disclosure [Member] | Derivative Financial Instruments, Liabilities [Member]
    
Liabilities    
Trading liabilities $ 2,337 $ 2,293
[1] Includes loans held for sale, at fair value, of consolidated VIEs322 315
[2] These amounts include IRLCs and derivative financial instruments entered into by the Mortgage line of business to hedge its interest rate risk.
[3] These amounts include the derivative associated with the Company's sale of Visa shares during the year ended December 31, 2009, certain CDS, and the contingent consideration obligation related to an acquisition.
[4] These amounts include the derivative associated with the Company's sale of Visa shares during the year ended December 31, 2009.
[5] Amount represents the cash collateral received from or deposited with derivative counterparties. Amount is offset with derivatives in the Consolidated Balance Sheets as of June 30, 2012.
[6] Amount represents the cash collateral received from or deposited with derivative counterparties. Amount is offset with derivatives in the Consolidated Balance Sheets as of December 31, 2011.
[7] Includes at cost, $455 million of FHLB of Atlanta stock, $401 million of Federal Reserve Bank stock, and $116 million in mutual fund investments.
[8] Includes at cost, $342 million of FHLB of Atlanta stock, $398 million of Federal Reserve Bank stock, and $187 million in mutual fund investments.