Annual report pursuant to Section 13 and 15(d)

Shareholders' Equity (Details)

v2.4.0.6
Shareholders' Equity (Details) (USD $)
In Millions, except Share data, unless otherwise specified
 12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Class of Stock [Line Items]    
Total Shares Outstanding 3,685,410 3,689,084
Carrying Value $ 19,067 [1]  
Preferred Stock, Discount on Shares 299  
Series B Preferred Stock [Member]
    
Class of Stock [Line Items]    
Total Shares Outstanding 7,571 [2]  
Liquidation Preference Per Share (in dollars) $ 100 [2]  
Carrying Value 1 [1],[2]  
Per Annum Dividend Rate 7.00% [2]  
Series D Preferred Stock [Member]
    
Class of Stock [Line Items]    
Total Shares Outstanding 26,174 [3],[4]  
Liquidation Preference Per Share (in dollars) $ 25,000 [3],[4]  
Carrying Value 654 [1],[3],[4]  
Per Annum Dividend Rate 6.204% [3],[4]  
Series E Preferred Stock [Member]
    
Class of Stock [Line Items]    
Total Shares Outstanding 12,691 [3],[4]  
Liquidation Preference Per Share (in dollars) $ 25,000 [3],[4]  
Carrying Value 317 [1],[3],[4]  
Series F Preferred Stock [Member]
    
Class of Stock [Line Items]    
Total Shares Outstanding 1,409 [3],[4]  
Liquidation Preference Per Share (in dollars) $ 100,000 [3],[4]  
Carrying Value 141 [1],[3],[4]  
Series G Preferred Stock [Member]
    
Class of Stock [Line Items]    
Total Shares Outstanding 4,926 [3],[4]  
Liquidation Preference Per Share (in dollars) $ 100,000 [3],[4]  
Carrying Value 493 [1],[3],[4]  
Series H Preferred Stock [Member]
    
Class of Stock [Line Items]    
Total Shares Outstanding 114,483 [3],[4]  
Liquidation Preference Per Share (in dollars) $ 25,000 [3],[4]  
Carrying Value 2,862 [1],[3],[4]  
Per Annum Dividend Rate 8.20% [3],[4]  
Series I Preferred Stock [Member]
    
Class of Stock [Line Items]    
Total Shares Outstanding 14,584 [3],[4]  
Liquidation Preference Per Share (in dollars) $ 25,000 [3],[4]  
Carrying Value 365 [1],[3],[4]  
Per Annum Dividend Rate 6.625% [3],[4]  
Series J Preferred Stock [Member]
    
Class of Stock [Line Items]    
Total Shares Outstanding 38,053 [3],[4]  
Liquidation Preference Per Share (in dollars) $ 25,000 [3],[4]  
Carrying Value 951 [1],[3],[4]  
Per Annum Dividend Rate 7.25% [3],[4]  
Series K Preferred Stock [Member]
    
Class of Stock [Line Items]    
Total Shares Outstanding 61,773 [3],[5]  
Liquidation Preference Per Share (in dollars) $ 25,000 [3],[5]  
Carrying Value 1,544 [1],[3],[5]  
Dividend Payment Rate, Variable three-month Libor  
Dividend Payment Basis Spread 3.63%  
Series L Preferred Stock [Member]
    
Class of Stock [Line Items]    
Total Shares Outstanding 3,080,182  
Liquidation Preference Per Share (in dollars) $ 1,000  
Carrying Value 3,080 [1]  
Per Annum Dividend Rate 7.25% 7.25%
Series M Preferred Stock [Member]
    
Class of Stock [Line Items]    
Total Shares Outstanding 52,399 [3],[5]  
Liquidation Preference Per Share (in dollars) $ 25,000 [3],[5]  
Carrying Value 1,310 [1],[3],[5]  
Dividend Payment Rate, Variable three-month Libor  
Dividend Payment Basis Spread 3.64%  
Series T Preferred Stock [Member]
    
Class of Stock [Line Items]    
Total Shares Outstanding 50,000  
Liquidation Preference Per Share (in dollars) $ 100,000  
Carrying Value 2,918 [1]  
Per Annum Dividend Rate 6.00%  
Series 1 Preferred Stock [Member]
    
Class of Stock [Line Items]    
Total Shares Outstanding 3,275 [3],[6]  
Liquidation Preference Per Share (in dollars) $ 30,000 [3],[6]  
Carrying Value 98 [1],[3],[6]  
Dividend Payment Rate, Variable three-month Libor  
Dividend Payment Basis Spread 0.75%  
Minimum Interest Rate Per Annum 3.00%  
Series 2 Preferred Stock [Member]
    
Class of Stock [Line Items]    
Total Shares Outstanding 9,967 [3],[6]  
Liquidation Preference Per Share (in dollars) $ 30,000 [3],[6]  
Carrying Value 299 [1],[3],[6]  
Dividend Payment Rate, Variable three-month Libor  
Dividend Payment Basis Spread 0.65%  
Series 3 Preferred Stock [Member]
    
Class of Stock [Line Items]    
Total Shares Outstanding 21,773 [3],[6]  
Liquidation Preference Per Share (in dollars) $ 30,000 [3],[6]  
Carrying Value 653 [1],[3],[6]  
Per Annum Dividend Rate 6.375% [3],[6]  
Series 4 Preferred Stock [Member]
    
Class of Stock [Line Items]    
Total Shares Outstanding 7,010 [3],[6]  
Liquidation Preference Per Share (in dollars) $ 30,000 [3],[6]  
Carrying Value 210 [1],[3],[6]  
Dividend Payment Rate, Variable three-month Libor  
Dividend Payment Basis Spread 0.75%  
Minimum Interest Rate Per Annum 4.00%  
Series 5 Preferred Stock [Member]
    
Class of Stock [Line Items]    
Total Shares Outstanding 14,056 [3],[6]  
Liquidation Preference Per Share (in dollars) $ 30,000 [3],[6]  
Carrying Value 422 [1],[3],[6]  
Dividend Payment Rate, Variable three-month Libor  
Dividend Payment Basis Spread 0.50%  
Series 6 Preferred Stock [Member]
    
Class of Stock [Line Items]    
Total Shares Outstanding 59,388 [3],[7]  
Liquidation Preference Per Share (in dollars) $ 1,000 [3],[7]  
Carrying Value 59 [1],[3],[7]  
Per Annum Dividend Rate 6.70% [3],[7]  
Series 7 Preferred Stock [Member]
    
Class of Stock [Line Items]    
Total Shares Outstanding 16,596 [3],[7]  
Liquidation Preference Per Share (in dollars) $ 1,000 [3],[7]  
Carrying Value 17 [1],[3],[7]  
Per Annum Dividend Rate 6.25% [3],[7]  
Series 8 Preferred Stock [Member]
    
Class of Stock [Line Items]    
Total Shares Outstanding 89,100 [3],[6]  
Liquidation Preference Per Share (in dollars) $ 30,000 [3],[6]  
Carrying Value $ 2,673 [1],[3],[6]  
Per Annum Dividend Rate 8.625% [3],[6]  
Option One [Member] | Series E Preferred Stock [Member]
    
Class of Stock [Line Items]    
Dividend Payment Rate, Variable three-month Libor  
Dividend Payment Basis Spread 0.35%  
Option One [Member] | Series F Preferred Stock [Member]
    
Class of Stock [Line Items]    
Dividend Payment Rate, Variable three-month Libor  
Dividend Payment Basis Spread 0.40%  
Option One [Member] | Series G Preferred Stock [Member]
    
Class of Stock [Line Items]    
Dividend Payment Rate, Variable three-month Libor  
Dividend Payment Basis Spread 0.40%  
Option Two [Member] | Series E Preferred Stock [Member]
    
Class of Stock [Line Items]    
Per Annum Dividend Rate 4.00%  
Option Two [Member] | Series F Preferred Stock [Member]
    
Class of Stock [Line Items]    
Per Annum Dividend Rate 4.00%  
Option Two [Member] | Series G Preferred Stock [Member]
    
Class of Stock [Line Items]    
Per Annum Dividend Rate 4.00%  
Through January 29, 2018 [Member] | Series K Preferred Stock [Member]
    
Class of Stock [Line Items]    
Per Annum Dividend Rate 8.00%  
Through May 14, 2018 [Member] | Series M Preferred Stock [Member]
    
Class of Stock [Line Items]    
Per Annum Dividend Rate 8.125%  
Minimum [Member] | Preferred Stock, Excluding Series T Preferred [Member]
    
Class of Stock [Line Items]    
Preferred Stock, Voting Rights, Dividend Payable, Number of Semi Annual Periods in Arrears 3  
Preferred Stock, Voting Rights, Dividend Payable, Number of Quarterly Periods in Arrears 6  
Preferred Stock, Voting Rights, Dividends in Arrears, Number of Additional Directors to be Elected 2  
Preferred Stock, Termination of Voting Rights, Dividend Paid, Number of Semi Annual Periods 2  
Preferred Stock, Termination of Voting Rights, Dividend Paid, Number of Quarterly Periods 4  
[1] Amounts shown are before third-party issuance costs and other Merrill Lynch purchase accounting related adjustments of $299 million.
[2] Series B Preferred Stock does not have early redemption/call rights.
[3] The Corporation may redeem series of preferred stock on or after the redemption date, in whole or in part, at its option, at the liquidation preference plus declared and unpaid dividends.
[4] Ownership is held in the form of depositary shares, each representing a 1/1,000th interest in a share of preferred stock, paying a quarterly cash dividend, if and when declared.
[5] Ownership is held in the form of depositary shares, each representing a 1/25th interest in a share of preferred stock, paying a semi-annual cash dividend, if and when declared, until the redemption date adjusts to a quarterly cash dividend, if and when declared, thereafter.
[6] Ownership is held in the form of depositary shares, each representing a 1/1,200th interest in a share of preferred stock, paying a quarterly cash dividend, if and when declared.
[7] Ownership is held in the form of depositary shares, each representing a 1/40th interest in a share of preferred stock, paying a quarterly cash dividend, if and when declared.