Annual report pursuant to Section 13 and 15(d)

Shareholders' Equity - Textuals (Details)

v2.4.0.6
Shareholders' Equity - Textuals (Details) (USD $)
1 Months Ended 12 Months Ended 1 Months Ended 12 Months Ended 1 Months Ended 12 Months Ended 1 Months Ended 12 Months Ended 9 Months Ended 12 Months Ended 9 Months Ended 12 Months Ended 12 Months Ended 12 Months Ended
Sep. 30, 2011
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2012
Series T Preferred Stock [Member]
Dec. 31, 2012
Series L Preferred Stock [Member]
Days
D
Dec. 31, 2011
Series L Preferred Stock [Member]
Sep. 30, 2011
Berkshire Hathaway Warrant Six Percent Perpetual Preferred Series T Stock [Member]
Sep. 02, 2011
Berkshire Hathaway Warrant Six Percent Perpetual Preferred Series T Stock [Member]
Dec. 31, 2012
Warrants Expiring October 28, 2018 [Member]
Dec. 31, 2012
Warrants Expiring January 16, 2019 [Member]
Dec. 31, 2012
Stock Options [Member]
Dec. 31, 2012
Bank of America Corporation [Member]
Dec. 31, 2011
Bank of America Corporation [Member]
Dec. 31, 2010
Bank of America Corporation [Member]
Dec. 31, 2012
Retained Earnings [Member]
Dec. 31, 2011
Retained Earnings [Member]
Dec. 31, 2010
Retained Earnings [Member]
Sep. 30, 2011
Common Stock Including Additional Paid in Capital [Member]
Dec. 31, 2012
Common Stock Including Additional Paid in Capital [Member]
Dec. 31, 2011
Common Stock Including Additional Paid in Capital [Member]
Dec. 31, 2010
Common Stock Including Additional Paid in Capital [Member]
Sep. 30, 2011
Preferred Stock [Member]
Dec. 31, 2011
Exchange Agreements [Member]
Sep. 30, 2012
Exchange Agreements [Member]
Common Stock [Member]
Dec. 31, 2011
Exchange Agreements [Member]
Common Stock [Member]
Sep. 30, 2012
Exchange Agreements [Member]
Non-Convertible Preferred Stock and Trust Preferred Securities [Member]
Dec. 31, 2011
Exchange Agreement Non-Convertible Preferred Stock for Common Stock [Member]
Non-Convertible Preferred Stock [Member]
Mar. 31, 2012
Exchange Agreement Non-Convertible Preferred Stock for Common Stock [Member]
Non-Convertible Preferred Stock [Member]
Dec. 31, 2011
Exchange Agreement Non-Convertible Preferred Stock for Common Stock [Member]
Common Stock [Member]
Mar. 31, 2012
Exchange Agreement Trust Preferred Securities for Common Stock [Member]
Trust Preferred Securities [Member]
Dec. 31, 2011
Exchange Agreement Series L Perpetual Convertible Preferred Stock [Member]
Common Stock [Member]
Class of Stock [Line Items]                                                                
Issuance of common stock, shares             269,000,000                             1,286,000,000     50,000,000 400,000,000   815,000,000        
Warrant Exercised, Number of Shares                 50,000,000                                              
Class of Warrant or Right, Number of Securities Called by Warrants or Rights                 700,000,000 121,800,000 150,400,000                                          
Class of Warrant or Right, Exercise Price of Warrants or Rights                   30.79 13.30                                          
Proceeds from Warrant Exercises $ 5,000,000,000                                                              
Stock Issued During Period Value Preferred New Issues                                     2,100,000,000       2,900,000,000                  
Investment Warrants, Exercise Price               $ 7.142857                                                
Stock issued in acquisition, shares                                           50,354,000                    
Stock Issued During Period, Shares, Share-based Compensation, Net of Forfeitures                       297,000,000                                        
Shares Paid for Tax Withholding for Share Based Compensation   104,000,000                                                            
Number of Shares Authorized   1,900,000,000                                                            
Preferred stock dividends and accretion   1,428,000,000 1,361,000,000 1,357,000,000                                                        
Preferred   1,472,000,000 1,325,000,000 1,357,000,000                       1,472,000,000 1,325,000,000 1,357,000,000                            
Issuance of common stock                                           19,244,000,000     412,000,000 2,200,000,000            
Payments Included in Exchange of Preferred Stock and Trust Preferred Securities for Common Stock                                                 398,000,000              
Proceeds from Issuance of Senior Long-term Debt                                               2,300,000,000       231,000,000       129,000,000
Carrying Value   19,067,000,000 [1]     2,918,000,000 [1] 3,080,000,000 [1]                                           814,000,000 296,000,000      
Trust Preferred Securities, Carrying Amount                                                             760,000,000  
Stock Issued During Period, Common Stock in Exchange for Preferred Stock                                                           72,000,000   20,000,000
Stock Issued During Period, Common Stock in Exchange for Preferred Stock, Value                                                           399,000,000   123,000,000
Per Annum Dividend Rate         6.00% 7.25% 7.25%                                                  
Non Cash Reduction to Preferred Stock Dividends                                                       184,000,000       17,000,000
Other income (loss)   (1,839,000,000) 6,869,000,000 2,384,000,000                 (304,000,000) [2] 10,603,000,000 [2] 2,781,000,000 [2]                       202,000,000          
Proceeds from Issuance of Preferred Stock and Preference Stock   633,000,000                     667,000,000 5,000,000,000 0                                  
Fair Value of Consideration Transferred in Exchange of Preferred Stock for Common Stock                                                               220,000,000
Fair Value of Securities Issuable                                                               32,000,000
Liquidation Preference Per Share         $ 100,000 $ 1,000                                                    
Preferred Stock Dividend Rate Percentage Option To Exercise In Cash or Noncash Warrant Transaction                 6.00%                                              
Preferred Stock, Redemption Price Per Share         $ 105,000                                                      
Preferred Stock, Dividend Rate, Percentage Unpaid         8.00%                                                      
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate   35.00% 35.00% 35.00%                                                        
Increase In Retained Earnings And Net Income Applicable To Common Shareholders                                                     246,000,000          
Dividends, Preferred Stock, Stock     36,000,000                                               (44,000,000)          
Preferred Stock To Be Convertible Into Common Shares           20                                                    
Preferred Stock, Par or Stated Value Per Share   $ 0.01 $ 0.01                                                          
Trading Days           20                                                    
Consecutive Trading Days           30                                                    
Common Stock Closing Price Exceeds Then Applicable Conversion Price Of Preferred Stock           1.30                                                    
Increase to Tier 1 Capital, Percent   0.29%                                                            
Common stock issued under employee plans and related tax effects   $ 1,109,000,000 $ 882,000,000 $ 1,488,000,000                               $ 1,109,000,000 $ 880,000,000 $ 1,385,000,000                    
[1] Amounts shown are before third-party issuance costs and other Merrill Lynch purchase accounting related adjustments of $299 million.
[2] Includes $6.5 billion of gains related to the sale of the Corporation’s investment in CCB in 2011.